installation instructions
Contents
1. Oe eee 17 ALL 1 7945 5151 C Valve Bracket 18 DGAM DGAT 1 7956A5201 Panel Coil Cavity 19 13 46 19 eee ee eer 20 ALL 1 7670 368P A Thermostat Adj Ant 21 ALL 1 7945 3011 Gasket Pkg Heat Exchanger 22 ALL 1 7995 5751 Heat Exchanger with Gaskets 23 ALL 1 7975 3881 Remote Sensor 24 ALL 1 7681 3301 System Switch 25 ALL 1 7956 1121 Junction Box Cover 26 ALL 1 2940A3541 Transformer 115 24V 40VA 29 056 1 7945 3281 A Limit Switch OPEN 140 CLOSE 110 070 075 7970 3281 A Limit Switch OPEN 145 CLOSE 115 090 7995 3381 A Limit Switch OPEN 150 CLOSE 120 31 ALL 1 7970 5851 A Burner Assembly Less Gas Valve Includes Codes 32 33 34 32 ALL 1 1474 0521 Hot Surface Ignitor 33 ALL 1 7970 179 Ignitor Shield 34 ALL 1 7945 1631 A Mounting Plate Burner 35 eee 36 ALL 1 1214 2511 Filter 16 x 20 x 1 Disposable 2 Required 37 DGAM 1 7975 1561 B Panel Upper White DLAS DGAT 7990 1561 A Panel Upper White 38 DGAM DGAT 1 7956 1571 A Panel Lower White DLAS 1 7956 1631 A Panel Lower White BLOWER PARTS 39 DGAM 1 1468 220P Motor DGAT DLAS 1 7966 311P Motor 057 070 075 090 1 1468 212P Motor 40 All 1 79664530 Scroll 41 All 1 2702 4091 Motor Mount 3 Pkg 42 All 1 7680 348 Connector Plug 43 All 1 7670 6391 Motor Clamp 44 090 1 1499 4461 Run Capacitor DGAM 1 1499 4471 Run Capacitor 45 All 1 1472 2751 Blower Wh2. Figure 5 Furnace to Closet Door Clearance Less than 1 Figure 6 Air Distribution Systems Figure 7 Location of Roof Jack TABLE 4 DLAS Roof Jacks TABLE 5 DGAT 8 DGAM Roof Jacks Figure 8 DLAS Models Figure 9 DGAT amp Models Figure 10 Ceiling Rings TABLE 6 Duct Connectors ooocccccoocccn enn Figure 11 Duct Connector Dimensions Figure 12 Template a oder PRI Wa Ca ERE HERI ERN ROUES Figure 13 Sub base Duct Figure 14 Duct Connector Figure 15 Connecting Roof Jack to Furnace Figure 16 Electrical Power amp Controls Figure 17 Thermostat Wiring Figure 17a Thermostat Wiring eee Figure 18 DGAT Series Wiring Diagram Figure 19 Series Wiring
3. Figure 20 Natural Gas Flame Appearance Figure 21 Propane Gas Flame Appearance Figure 22 Anti Backflow Damper O OO O O O OQ N N N N N AH AH AH AH O O O OI gt Q N N N N GENERAL SPECIFICATIONS AND INSTRUCTIONS DLAS Series 60 1 2 on Sub Base DGAT amp DGAM Series Figure 1 DLAS DGAT and DGAM Series Furnace Dimensions IMPROPER INSTALLATION ADJUSTMENT SERVICE OR MAINTENANCE CAN CAUSE INJURY OR PROPER TY DAMAGE PLEASE REFER TO ALL THE INSTRUCTIONS OF THIS MANUAL FOR PROPER INSTALLATION PROCE DURES IMPROPER INSTALLATION WILL VOID THE WARRANTY THE FURNACE SHALL BE INSTALLED SO THE ELEC TRICAL COMPONENTS ARE PROTECTED FROM WATER DO NOT TEST THE FUEL SYSTEM AT MORE THAN 14 INCHES WATER COLUMN AFTER FURNACE HAS BEEN CONNECTED TO THE FUEL LINE SUCH TEST ING MAY VOID THE WARRANTY ANY TEST RUN ABOVE 14 INCHES WATER COLUMN MAY DAMAGE THE FURNACE CONTROL VALVE WHICH COULD CAUSE AN EXPLOSION FIRE OR ASPHYXIATION IMPORTANT NOTICE These instructions are intended for the use of qualified indi viduals specially trained and experienced in installation of this type of equipment and related system components Installation and service per
4. CONNECT ELECTRICAL POWER WALL THERMOSTAT AND CONTROLS THERMOSTAT WIRING FOR DGAT AND DGAM SERIES THERMOSTAT WIRING FOR DLA WIRING DIAGRAMS Wiring Diagram for DGAT Series Wiring Diagram for DGAM Series GAS PIPING S HEAT ONLY SERIES INSTALLATION AND CHECKING OF GAS LINE Observing Burner Operation Combustion o N N N S O O O 0 A If Furance Fails to Operate Properly FINAL PROCEDURE 5 5 wax nara e c c DR e Install Furnace 5 2 hn Rinismand TEMI ukuy pt N Yin aut SQ Tee Seton itr tl Pace ion Furnace and Air Conditioner Installations 24 24 24 24 25 25 26 LIST OF FIGURES Figure 1 Furnace Dimensions cece TABLE 1 Furnace Specifications TABLE 2 Electrical Specifications TABLE 3 Minimum Clearances Figure 2 Alcove Installation 1 Figure Closet to Door Clearance 6 or greater Figure 4 Furnace to Closet Door Clearance 1 6
5. For NAT gas operation the furnace is designed for 7 W C inlet gas pressure Pressure to main burner is then reduced to 3 1 2 W C For Propane gas operation the furnace is designed for 11 W C inlet gas pressure Pressure to main burner is then reduced to 10 W C 23 IMPORTANT When converting valve from or to Propane gas it will be necessary to change main burner orifice to prevent an un derfired or overfired condition See furnace nameplate for complete instructions If the gas input to the furnace is too great because of excessive gas pressure wrong size orifice high altitude etc the burner flame will be sooty and may produce carbon monoxide which could result in unsafe operation explosion and or fire or as phyxiation Observing Burner Operation 1 Observe burner to make sure it ignites Observe color of flame On natural gas the flame will burn blue with appreciably yellow tips On Propane gas a yellow flame may be expected If flame is not the proper color call a qualified serviceman for service Let furnace heat until blower cycles on Turn thermostat down Observe burner to make sure it shuts off a Let the furnace cool and blower cycle Should overheating occur or the gas supply fail to shut off shut off the manual gas valve to the fur nace and allow burner to run until furnace cools down and blower shuts off before shutting off the electrical supply If any abnormalities a
6. For energy conservation and economy it is recommended that the thermostat be set at 68 for heating and 80 for cooling For Heating with Air Conditioning Applications Set HEAT COOL switch to HEAT position and set FAN switch to AUTO position CAUTION Before placing furnace in service it must be checked to make sure it is equipped for the type of gas being used The burner flame must also be ob served and adjusted if necessary Failure to ob serve this caution may result in unsafe operation explosion and or fire or asphyxiation See follow ing sections Gas Supply and Combustion Air Gas Supply The gas supply to your home will either be Natural Gas or Propane gas bottle gas Your furnace will be factory equipped to operate on only one of these two different gases A small metal tag secured to the furnace next to the gas valve will specify the type of gas your furnace is equipped to use If the gas is different from that specified on the metal tag the furnace can be converted by following the instructions on the furnace safety label inside lower front panel Parts for conversion are contained in the small cloth bag attached to the gas valve Be sure the proper size orifice is used as specified on the furnace name plate The furnace must be converted by a qualified tech nician Improper conversion can cause unsafe op eration explosion and or fire or asphyxiation Natural Gas Operation The furnace is designe
7. HEAT COOL switch if air conditioning is installed If a set backtype thermostat is employed be sure that the ther mostat is in the correct operating mode 2 Checkto see that electrical power is ON 3 Checkto see that the knob on the gas control valve is in the full ON position 4 Make sure filters are clean return grilles are not ob structed and supply registers are open 5 Be sure that furnace flue piping is open and unob structed If the cause for the failure to operate is not obvious do not attempt to service the furnace yourself Call a quali fied service agency or your gas supplier FINAL PROCEDURE Install Furnace Doors Install the bottom door first by holding the door flush against the casing and sliding the door down until the door top and bottom flanges rest in the casing chan nels Then install the upper door in the same manner Finish and Trim Alcove and Closet Installations may now be fin ished and trimmed as necessary Leave enough gap above upper furnace door to allow it to be lifted and removed NOTE See nameplate for conversion and lighting instructions Ob tain a temperature rise within the ranges specified on the name plate Automatic Damper SUPPLY DUCT OPENING Furnace Base Duct Connector Note For best air delivery install damper with blades parallel to supply duct Figure 22 Anti Backflow Damper 25 Furnace and Air Conditioner Installa
8. The burner will continue to operate until the thermostat is satisfied at which time all burner flame is extinguished Dur ing the off cycle no gas is consumed With the room ther mostat set below room temperature and with the electrical power and gas supply to the furnace on the normal se quence of operation is as follows 1 When the room temperature falls below the setting of the room thermostat the thermostat energizes the fur nace control board 2 When the furnace control board is activated the com bustion air blower is turned on 3 Asthe combustion air blower increases in speed the contacts of the centrifugal switch will close and com plete the electrical circuit to the gas valve 4 During the next 40 to 50 seconds the combustion air blower will bring fresh air into the heat exchanger and the ignitor will begin to glow At the end of this period the gas valve will open and the burners will light 5 After the burners light a separate sensor acts as a flame probe to checkfor the presence offlame As long as flame is present the system will monitor it and hold the gas valve open 6 Ifthe burners fail to light within 6 8 seconds after the gas valve opens the gas valve will close and the ignitor will be turned off After a short pause the system will recycle and try again for ignition If the burners fail to light after three tries the ignition system will lock out The system will remain in lock out mode for
9. VN 1680 1566 t 680 O00z v 1280 1966 280 000 92 1820 1866 27 820 003 vge 1220 1966 0S 20 003 83 000 0L 1680 16566 t 680 080 9b 1280 1966 St 280 82 1280 1966 Sv 280 08v 9 1220 1966 20 080 0 000 6 L 60 1566 cv 60 096 87 1980 1566 tv 980 008 1280 1966 Sv 280 092 82 1220 1966 20 096 12 000 8 L 60 1966 cv 60 8 19 1980 1966 tv 980 003 Eb 1980 1966 vv 980 1920 1966 87 970 0v8 e 000 1960 1666 Lv 960 022 79 1680 1966 v 680 009 Sr 1980 1966 vv 980 OcE r 1910 1966 87 920 022 92 000 9 L860 1966 860 009 9 1680 1966 r 680 000 8r 1680 1966 680 009 Sv 1820 1966 27 820 009 22 000 S 1660 1666 6 660 09 1860 1966 cv 260 00 0S 1680 1966 r 680 088 Zv 1820 1966 27 820 62 000 t 1660 1966 62 660 092 29 1860 1966 cv 260 0082S 1680 1966 r 680 091 0G 1820 1966 27 820 09 Ly 000 10 1966 8 LOL 99 1860 1966 260 00299 1860 1966 27 260 9 1280 1966 280 Ove er 000 0002 0 Med mdmo Med mdmo Med mdmo Med 1701 1966 Z vOL 000 22 1960 1966 Lt 960 000 09 1860 1966 27 260 000 29 1280 1966 St 280 000
10. Wheel TORIN CM1020 704 5 10 5 8 Dia x 7 1 8 x 1 2 LAU 2027855 10 7503 42001 0 BURNER ORIFICE CHART __ OC 9951 1281 9951 0821 9951 1491 9951 0931 9951 1541 9951 0961 9951 1771 9951 1041 Nat LP NOTE All parts with three digit suffix numbers are Special Order Parts These parts are subject to factory availability and require extra time for delivery Suggested Parts Inventory 2 of Units Installed Minimum 1 each Evcon Industries Inc 3110 North Mead Box 19014 Wichita KS 67204 9014 16 Catalog R 603 B Rev 3 8 96 Page 2
11. a period of one hour then the furnace will try for ignition again 7 Thelapsed time from the moment the room thermostat closes to when the burners light may be 45 60 sec onds This delay is caused by a thetime required for the ignitor to heat up and b thetime required for fresh air to be brought into the heat exchanger 8 90to 120 seconds after the burners have lighted the fan switch will close and the furnace air circulation blower will run 9 When room thermostat is satisfied the circuit to the fur nace control board is opened The circuit to the com bustion air blower and the gas valve is opened and the burners are extinguished Then the furnace control board will keep the circulating blower running for a fixed period oftime to allow additional heat to be drawn from the heat exchanger 10 Diagnostic Light If furnace does not maintain home temperature as set check the light indicator located behind the upper front door of the furnace The electronic furnace control is equipped with a diag nostic light which flashes when there is a service prob lem The diagnostic codes are NO Flashes steady green Normal Operation ONE flash Ignition Failure TWO flashes Centrifugal Switch Stuck Closed THREE flashes Centrifugal Switch Stuck Open FOUR flashes Limit Cycling may indicate that return air filter needs to be cleaned FIVE flashes Gas Valve Energized with No Call for Heat SIX flashes Wron
12. can be saved if you will give the service agency the MODEL and SERIAL NUMBER of your furnace This will enable him to determine the specific components used and perhaps to better identify the possible problem and be better prepared if a service call is required To Contact Your Serviceman fill in COMPANY ADDRESS TELEPHONE While you are away Your furnace is equipped with a safety device which will shut off the supply of gas to the burner in case of malfunc tion For this reason it is never practical to assume that the furnace will operate unattended for a long period of time especially ifthere is a possibility of damage to your property because of freezing So if you plan to be away from home arrange for someone to check your house every day SEASONAL SERVICE INFORMATION During extreme cold weather ice may form on the fur nace roof jack crown Small amounts of ice forming on the roof jack will present no problem to proper furnace operation However excessive ice formation could re strict the combustion air supply to the burner causing inefficient burner operation and pilot outage When the temperature is very cold near zero or below it is recommended that the roof jack be inspected every day or more frequently if required If ice has started to collect on the roof jack crown it should be carefully broken off All appliances need maintenance by serviceman at the be ginning of each heating season Call your near
13. fire department Installation and service must be performed by a qualified installer service agency or the gas supplier Warning If not installed operated and maintained in accordance with the manufacturer s instructions this product could expose you to substances in fuel or from fuel combustion which are known to the State of California to cause cancer birth defects or other reproductive harm Also operation installation and servicing of this product could expose you to airborne particles of glasswool fibers known to the State of California to cause cancer through inhalation TABLE OF CONTENTS SAFETY PRECAUTIONS a taa o at Ro o 3 WARRANTY AND RESPONSIBILITIES 3 SEQUENCE OF OPERATION 425 5555 193 eeu wur Es eels Gees res pls ees 4 THE FURNACE CONTROLS AND THEIR FUNCTION What To Do If You RUE angen Deus o OPERATING INSTRUCTIONS Gas SHUM e sok Tain bI rbi bu Sasa e War SEU S ieee tei cus ie Thermostat oec Rp eU o gue b E Ee t vu mU Pig Gas Supply A A ERE GERE Observing Burner Operation ococcccccocccccc enn Comb stion AIr If Furnace Fails to Operate Properly YX O O O PERIODIC INSPECTION AND MAINTENANCE EMOS arm pora A S M ra nera Wen VM WARUM EAR
14. flue pipe assembly is fully ex tended against the built in stop This provides an addi tional safeguard againstthe flue assembly being pulled from the roof jack during transportation or other stress conditions Improper installation may damage the equipment can create a hazard and will void the warranty Carefully follow all instructions and warnings to avoid Fire Explosion Or Asphyxiation Locating and Cutting Roof Jack Opening To facilitate the proper installation of the roof jack it is very important that the roof jack opening in the ceiling and roof be on the same vertical center line as the furnace flue collar See Figure 7 The dimensions shown in Figure 7 may be used if the fur naceis flush with the walls or adjusted to allow for any spac ing away from either wall Mark this location on ceiling and scribe a circle with a 5 ra dius 10 diameter around this mark Cut opening for roof jack through ceiling and roof If furnace was installed during construction cover furnace and flue opening to prevent debris from entering flue and combustion air when hole is cut for roof jack 11 Mark Center 2 gt These dimensions may be used if furnace fits snug against wall mc 2 TEMPLATE FRONT Figure 7 Location of Roof Jack Opening Installing Roof Jack in Roof See Figure 8 amp Figure 9 for Dimensional requirements Insert roof jack into opening in the roof The roof jack should be se
15. is fully engaged Fasten the combustion air tube to the furnace combustion air collar using two 2 1 2 inch sheet metal screws Screw holes are provided in com bustion air tube and furnace combustion air collar See Figure 15 16 It is mandatory that the combustion air and flue tube assembly be fully engaged at back sides and front and combustion air tube securely fastened to the furnace with sheet metal screws 2 in the screw holes pro vided COMBUSTION AIR TUBE SECURE FLUE PIPE FURNACE FLUE OUTLET 1 HOLES 2 COMBUSTION AIR TUBE COLLAR FRONT OF FURNACE 8 OR 10 SCREWS RECOMMENDED Figure 15 Connecting Roof Jack to Furnace IMPORTANT VENT SYSTEM INSTALLATION INSTRUCTIONS FAILURE TO FOLLOW ALL VENTING INSTRUCT IONS CAN RESULT IN FIRE ASPHYXIATION OR EXPLOSION The vent system is an important part of your furnace instal lation Carefully read and observe the following basic instructions as well as those packed with the vent system EXISTING FURNACE REPLACEMENT IF THIS FURNACE REPLACES AN EXISTING FURNACE DO THE FOLLOWING 1 Ifa 2 d roof roof cap or addition has been made to the existing roof of the home remove the old vent system completely to avoid the possibility of an improp erly installed pipe or gaps in the old vent system INSTALL A NEW VENT SYSTEM Your ceiling and roof height will determine the correct vent system to use Refer to the vent selection table
16. of the furnace installation instructions 2 After unpacking the vent system check the rain caps Insure they are not damaged tilted or crooked Do not twist crush or sit on the roof caps during installa tion Damaged roof caps will cause improper furnace operation The furnace will not heat properly and could result in explosion 3 After installing vent pipe on furnace top collar check to make sure there is no gap in back or side between the pipe collar and the furnace casing top 4 Useonly the pipes provided with the roof jack assem bly Do not add to or adapt other sheet metal pipes Do not cut insert or add other pipes to this assembly 5 In no case should there be a gap between sections of the flue pipe or the combustion air pipe 17 NEW HOME INSTALLATION IF THIS FURNACE IS INSTALLED ON A NEW HOME DO THE FOLLOWING 1 Inspectthe furnace top collars for signs of insulation or ceiling debris which might have fallen in during cutting of the ceiling and roof holes Remove all debris before continuing 2 After unpacking the vent system check the rain caps Insure they are not damaged tilted or crooked Do not twist crush or sit on the roof caps during installa tion Damaged roof caps will cause improper furnace operation The furnace will not heat properly and could result in explosion 3 Before inserting the vent pipe into the furnace top in spect the furnace flue and combustion air opening for debris or i
17. the supply duct SUPPLY DUCT OPENING lt gt Furnace i Base A Use screw holes in furnace Fuel Line Opening base to fasten to duct con nector relative to position of Refrigerant duct connector Line Opening TABS DUCT DUCT 1 Insert Duct Plenum 2 Connector Into Duct Cut out Bend Bottom Tabs Over And Onto The Underneath Duct Service Figure 14 Duct Connector CONNECTING ROOF JACK TO FURNACE The inner flue pipe must be present It is mandatory that the combustion air pipe and flue pipe assembly be fully engaged The combustion air pipe MUST be securely fastened to the furnace with sheet metal screws in the holes provided Use 1 2 blunt or sharp end sheet metal screws to fasten roof jack combustion air pipe to furnace combustion air collar Screw holes are provided in the pipe and collar Excessively long screws may extend to flue pipe and puncture it Screws are not to exceed 1 1 2 in length NOTE Combustion air tube and flue pipe are part of the same as sembly Only the combustion air tube need be fastened to the furnace 1 Check to be certain that the flue pipe and combustion air tube are present 2 Pullthe telescoping flue tube and combustion air tube assembly down from the roof jack Slide the flue tube combustion air tube assembly down firmly over the fur nace flue outlet and combustion air collar Insure that the back side and front of combustion air tube collar
18. 3541 Transformer 115 24V 40VA 29 056 1 7945 3281 Limit Switch OPEN 140 CLOSE 110 070 075 7970 3281 Limit Switch OPEN 145 CLOSE 115 090 7995 3381 Limit Switch OPEN 150 CLOSE 120 31 ALL 1 7970 5851 A Burner Assembly Less Gas Valve Includes Codes 32 33 34 32 ALL 1 1474 0521 Hot Surface Ignitor Norton 201N W 33 ALL 1 7970 179 Ignitor Shield 34 ALL 1 7945 1631 A Mounting Plate Burner 35 ALL 7670 3451 Filter Retainer Pk d 2 S N 960623003 amp Below 36 ALL 1 7660 3401 Filter 19 3 x 35 3 4 x 1 4 S N 960623003 amp Below ALL 1 1214 2511 Filter 16 x 20 x 1 2 Required S N 960623004 amp Above 37 DGAM 1 7975 1561 A Panel Upper Almond DGAM 1 7975 1561 B Panel Upper White S N 960623004 amp Above DLAS DGAT 1 7990 1561 Panel Upper Almond DLAS DGAT 1 7990 1561 Panel Upper White S N 960623004 amp Above 38 DGAM DGAT 1 7956 1571 Panel Lower Almond DGAM DGAT 1 7956 1571 A Panel Lower White S N 960623004 amp Above DLAS 1 7956 1631 Panel Lower Almond DLAS 1 7956 1631 A Panel Lower White S N 960623004 amp Above BLOWER PARTS 39 DGAM 1 1468 220P Motor DGAT DLAS 1 7966 311P Motor 057 070 075 090 1 1468 212P Motor 40 All 1 7966A530 Scroll 41 All 1 2702 4091 Motor Mount 3 Pkg 42 All 1 7680 348 Connector Plug 43 All 1 7670 6391 Motor Clamp 44 090 1 1499 4461 Run Capacitor DGAM 1 1499 4471 Run Capacitor 45 All 1 1472 2751 Blower
19. 6 Sc 671 003 ev 1821 1966 02 821 00b se 1821 1966 02 821 009 22 1011 1966 SE OLL 009 3 000 0L 1791 1966 c vS 080 9Y 1981 1966 62 91 09 1821 1966 02 821 0 8 6 1811 1966 ELL 6 000 6 1291 1966 cc 28V 096 87 1981 1966 62 91 1981 1966 62 921 080 82 1911 1966 22 911 082 12 000 8 1191 1966 02 LOL Or8 IG LOtL 1S66 82 07 1 1921 1966 62 921 026 0 1911 1966 22 911 021 22 000 Z 1991 1966 6l 991 02279 Lv tvL 1S66 22 771 O0ve vbv 10 1 1966 82 071 0992 1021 1966 12 021 096 72 000 9 1991 1966 6l 991 009 29 LttL 1966 22 771 002 27 LObvL 1G66 82 071 008 vb 1021 1966 12 021 008 9 000 S 1691 1966 81 691 08b 09 LttL 1966 22 771 09S 6v 1 1966 22 771 OvO Zy 1021 1966 18 01 9 82 000 t 1691 1966 81 691 092 29 16 1 1966 SZ 671 026 19 LvtvL 1S66 22 771 082 67 1021 1966 18 01 08v 01 000 621 1966 ZI 2V Ove 99 L6tL 1S966 SZ 671 082 79 L6vL 1S66 92 671 025 15 1821 1966 02 821 OcE cv 000 c A1024 1221 1966 91 22 000 22 1991 1966 22 91 000 6S 1671 1966 52 671 000 95 1821 1966 02 821 000 9t 0002 0 80140 mdino uone o 3 000 06 000 SZ indu 000 0Z 000 9S SV9 TVH n
20. 60 Hz 40 VA Nominal Anticipator Setting 50 Gas Valve Inlet 1 2 INSTALLATION STANDARDS Comply with Local Codes The installer shall familiarize himself with and comply with alllocal codes and regulations which govern the installation of this appliance Local codes and regulations shall take precedent over these regulations where applicable In lieu of local codes the appliance shall be installed in accor dance with In the U S A the National Electrical Code in accordance with rec ommendations made by the National Board of Fire Un derwriters in accordance with the the American Na tional Standard Institute National Fuel Gas Code Ansi Z223 1 NFPA 54 The installation must conform with local building codes Federal Manufactured Home Construction amp Safety Standard H U D Title 24 Part 3280 or in the absence of local codes with American National Standard Mobile Homes A225 1 for installation in mobile homes and American National Standard ANSI C1 NFPA 70 for all electrical wiring and American National X Standard A119 2 5010 for installation in recreational vehicles In Canada Manufactured Mobile Homes Unit installation shall comply with current CSA stan dard CAN CSA Z240 4 1 Installation Requirement for Gas Burning Appliances in Mobile Homes Unit electrical wiring and grounding shall comply with current standard
21. 7t 894140 894140 000 06 000 SZ 000 0Z 000 9S 3NVdOHd seues sv 1a LVDd Wv5a LYVHO NOILVH3G DNISNOH Sud indino uone 9 3 Med mdmo Wed indino Med mdmo Med DGAM DGAT amp DLAS SERIES HSI Gas Downflow Furnace Repair Parts List for DGAMO56BDD DGATO56BDD DLASOS6BDD DGATO70BDD DGAMO75BDD DGATO75BDD DLASO75BDD DGATO90BDD BURNER ORIFICE SEE CHART USED ON NO PART CODE MODEL REQ NUMBER DESCRIPTION CS ALL X 8B246P Enamel Spray 15 oz Almond 8B247P Enamel Spray 15 oz White 2 ALL 1 7945A5721 Casing Top 3 ALL 1 7990 3591W Limit Switch Upper 180 Manual Reset 4 ALL 1 7990 6451 Booster Assembly Includes Code 5 9 5 ALL 1 79954386 Booster Gasket 6 ALL 1 2900 3601 Impellor 3 13 46 x 1 7 g x 1 4 7 ALL 1 2900 147 Mount Plate Booster Motor 8 ALL 1 7990 300 Motor Mount Plate Gasket 9 ALL 1 7990 317P Booster Motor 3000 RPM y NOTE The 7624A3591 180 Manual Reset is a designed approved alternate for this limit switch 27 DGAM DGAT amp DLAS SERIES HSI GAS DOWN FLOW FURNACE USED ON NO PART CODE MODEL REQ NUMBER DESCRIPTION 10 ALL 1 7945 1351 B Cover Control Box 12 ALL 1 7990 319P Integrated Control 15 ALL 1 7990 326PWY Gas Valve 24V 5 Amp 1 2 x 3 g 16
22. CSA C22 1 Canadian Electrical Code Part 1 Recreational Vehicles Unit installation shall comply with current CSA stan dard CAN CGA Z240 4 2 Installation Requirements for Propane Appliances and Equipment in Recreation al Vehicles Unit electrical wiring and grounding shall comply with current CSA standard C22 2 No 148 CAN CSA Z240 6 2 Electrical Requirements for recreational ve hicles HIGH ALTITUDE INSTALLATION For elevation above 2 000 feet derate furnace orifice 296for each 1 000 feet of elevation above sea level Der ating is accomplished by reducing the orifice size See Derating Chart for orifice size and output adjust ment MINIMUM FURNACE CLEARANCES Access for servicing is an important factor in the location of any furnace A minimum of 24 inches should be provided in front of the furnace for access to the heating elements and controls This access may be provided by a closet door or by locating the furnace 24 inches from a facing wall or parti tion These furnaces are design certified for the following mini mum clearances from combustible material in alcove or closet installation TABLE 3 Minimum Clearances CLOSET ALCOVE BACK 0 0 SIDES 0 0 FRONT 6 24 2 2 ROOF JACK 0 0 DUCT 0 0 ALCOVE 5 20 Minimum Figure 2 Alcove Installation RETURN AIR REQUIREMENTS CLOSET INS
23. Figure17a Thermostat Wiring for DLAS Series 20 Blend Air If equipped Limit Switch lt Lower AED 2 8 006060006 0 Centrifugal Switch Thermostat e ES Combustion Blower Motor System Switch 2 41 Condensing Unit If equipped w E OO9990 lt OOPS Sensor Rod Li Incoming Power Must Be Polarized Observe Color Coding Hot Surface Ignitor Figure 18 DGAT Series Wiring Diagram 21 p 9 Blend Air Control Box fequipped Thermostat To A C Condensing Unit If equipped Blower Motor Incoming Power Must Be Polarized Observe Color Coding O99 990 GX9 Upper Limit Switch 0090060909 22 lt Lower i Q Limit Switch YEL gt C Centrifugal Switch Combustion Blower Motor Switch Hot Surface Ignitor Figure 19 DGAM Series Wiring Diagram GAS PIPING INSTALLATION AND CHECKING OF GAS LINE Gas Supply piping must be sized in accordance with the recommendations contained in American National Stan dard Institute Installation of Gas Piping ANSI 223 1 unless local codes or regulations state otherwise Materials used and pipe sizing for U S mobile homes must comply with requirements contained in Mobile Homes A119 1 Recreational Vehicles A119 2 and H U D Title 24 Section 280 705 and any lo
24. HVACmanuals com Heating amp Cooling Manuals Thank you for visiting HVACmanuals com Whether its residential commercial or mobile homes we re your HVAC info source If you are searching for information regarding a specific HVAC unit or part please e mail us your request at info HVACmanuals com If we don t have the information we can put it on our search list Some of the info we offer in our downloads can be quite old It s rare that prices for parts are listed in manuals but if you see any please ignore them as the prices are probably obsolete Most manuals contain parts lists and diagrams The older the unit the more you ll find obsolete parts In same cases the parts may still be available but under a new part number In other cases a generic part may be suitable for use For help in finding parts please visit our parts store at www HVACpartstore com Please note that specifications and illustrations are subject to change without notice and without incurring obligations The information contained in this download is for the use of qualified individuals who have been trained to interpret this data All repairs on HVAC equipment should be performed by a qualified technician In some states counties or cities the law states that repairs must only be done by licensed individuals Persons not legally or technically qualified should not attempt to interpret this information or perform any repairs INSTALLATION IN
25. IUS FUE PIPING xp paqa DUCERE aa Lee Return Alis ate RM ERE Ra Aq YOUR Serviceman 2 var dicem aw i T dca OPER YR US When You Call For Service Assistance While yo are away oves des Reed ado ens Seasonal Service Information O O O O oo CO IMPORTANT SERVICE INFORMATION 10 LIST OF FIGURES Figure 1 Furnace Controls 2 0 5 Figure 2 Natural Gas Flame Appearance 6 Figure 3 Manual Gas Shutoff Valve 6 Figure 4 Natural Gas Flame Appearance 8 Figure 5 Propane Gas Flame Appearance 8 Your furnace will give you all the comforts of complete win warnine ter air conditioning heating circulation filtering you WARNING have control and yet the furnace is as automatic as you de sire it to be Failure to observe the following safety precautions could cause fire explosion or asphyxiation If you will observe the few operating and maintenance in NOTE structions in this booklet this high efficiency forced warm a he air furnace will give you many years of dependable service The words Shall or Mus
26. If used refer to TABLE 5 Available with 3 1 2 12 Pitch Fixed Flashing Models 4000 6141 and 4000 6151 Available with 3 1 2 12 Pitch Fixed Flashing Models 4000 9161 and 4000 9181 These jacks have removable crowns Available with 3 1 2 12 Pitch Fixed Flashing Models 4000 6141 and 4000 6151 Available with 3 1 2 12 Pitch Fixed Flashing Models 4000 9161 and 4000 9181 NOTE ROOF FLANGE IS ADJUSTABLE UP TO 23 5 12 PITCH CAULK CAREFULLY ALL AROUND AEN v 191 77 S COMBUS LA TON f AIR CAULK UNDER FLASHING ITY DUCT CONNECTOR 1 2 UDES BASE WARM AIR DUCT Figure 8 DLAS Models SWIVEL JOINT WITH SEALANT SUPPLIED BY FURNACE MANUFACTURER The Bead or End of Upper Por tion of Roof Jack need Not ex tend below the ceiling IMPORTANT SEAL ROOF JACK FLASHING TO THE ROOF JACK AND ROOF THIS IS THE INSTALLER S I Pa 12 FLUE GASE s LJ 4 191 2 COMBUS TION AIR CAULK UNDER FLASHING DUCT CONNECTOR WARM AIR DUCT Figure 9 DGAT amp DGAM Models CEILING RINGS DUCT CONNECTORS The ceiling ring is to meet fire stop requirements Accessory Ceiling Ring P N 7660 2841 may be used see Figure 10 orthe mobile home manufactur er or the installer may use other approved methods to stop fire Ifrequired three 3 sections of Accessory Rin
27. Itis equipped with an ignition device which automatically lights the burn ers Do not try to light the burners by hand 5 Remove upper door panel 6 Move gas valve control lever to OFF See Figure 2 7 Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Follow Step 2 in the safety information above If you don t smell gas go to the next step 8 Move gas control lever to ON 9 Replace upper door panel 10 Turn on all electric power to the furnace 11 Set thermostat to desired setting MANUAL GAS COCK LEVER Figure 2 Robertshaw Gas Valve Gas Shutoff The furnace gas valve is equipped with a manual gas shut off Figure 2 shows the location of the manual shutoff valve Toturn off gas to the furnace move the lever or knob on the gas valve to the OFF position It may be necessary to de press the knob or lever in order to move it to the OFF posi tion The furnace installation should also have a manual shutoff valve in the gas piping to the furnace similar to what is shown in Figure 3 To turn off the gas to the furnace use a wrench and turn the knob or lever so that it is pointing 90 degrees from the gas pipe as shown in Figure 3 op eoo OFF ON Figure 3 Manual Gas Shutoff Valve Thermostat Set the room thermostat at the desired room temperature Greatest comfort will be achieved when the setting is not changed frequently
28. RT CODE MODEL REQ NUMBER DESCRIPTION VENDOR __ ALL X 8B246P Enamel Spray 15 oz Almond 8B2471 Enamel Spray 15 oz White 2 ALL 1 7945A5721 Casing Top 3 ALL 1 7990 3591W Limit Switch Upper 180 Automatic Reset 4 ALL 1 7990 6451 Booster Assembly Includes Code 5 9 5 ALL 1 79954386 Booster Gasket 6 ALL 1 2900 3601 Impellor 3 13 46 x 1 7 g x 1 4 7 ALL 1 2900 147 Mount Plate Booster Motor 8 ALL 1 7990 300 Motor Mount Plate Gasket 9 ALL 1 7990 317P Booster Motor 3000 RPM Fasco 7102 2187 10 ALL 1 7945 1351 B Cover Control Box 12 056 070 1 7956 319P Integrated Control 075 090 1 7990 319P Integrated Control 15 ALL 1 7990 326PWW Gas Valve 24V 5 Amp 1 2 x 3 8 RS 7C5 C7F 026 16 A NOTE The 762443591 180 Manual Reset is a designed approved alternate for this limit switch NOTE The 7707 326P is a designed approved alternate for this valve DGAM DGAT amp DLAS SERIES HSI GAS DOWN FLOW FURNACE USED ON NO PART CODE MODEL REQ NUMBER DESCRIPTION VENDOR 17 ALL 1 7945 5151 C Valve Bracket 18 DGAM DGAT 1 7956A5201 Panel Coil Cavity 19 13 46 19 20 ALL 1 7670 368P A Thermostat Adj Ant RS 65A 943 462 21 ALL 1 7945 3011 Gasket Pkg Heat Exchanger 22 ALL 1 7995 5751 Heat Exchanger with Gaskets 23 ALL 1 7975 3881 Remote Sensor 24 ALL 1 7681 3301 System Switch Carling SSRC901 RB 25 ALL 1 7956 1121 Junction Box Cover 26 ALL 1 2940A
29. S THE BURNERS DO NOT TRY TO LIGHT THE BURNERS BY HAND 2 BEFORE OPERATING SMELL ALL AROUND THE APPLIANCE AREA FOR GAS BE SURE TO SMELL NEXT TO THE FLOOR BECAUSE SOME GAS IS HEAVIER THAN AIR AND WILL SETTLE ON THE FLOOR What To Do If You Smell Gas e Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Immediately call your gas supplier from a neigh bor s phone Follow the gas supplier s instruc tions e f you cannot reach your gas supplier call the fire department Manual Reset Blower Limit Switch Combustion Fan Motor System Switch Diagnostic Light Burner Observation Window Gas Valve Burner Air Shutter Adjustment Rod Figure 1 Furnace Controls USE ONLY YOUR HAND TO TURN THE GAS CON TROL KNOB NEVER USE TOOLS IF THE KNOB WILL NOT TURN BY HAND DON T TRY TO REPAIR IT CALL A QUALIFIED SERVICE TECHNICIAN FORCE OR AT TEMPTED REPAIR MAY RESULT IN A FIRE OR EXPLO SION DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER WATER IMMEDIATELY CALL A QUALI FIED SERVICE TECHNICIAN TO INSPECT THE APPLIANCE AND TO REPLACE ANY PART OF THE CONTROL SYSTEM AND ANY GAS CONTROL WHICH HAS BEEN UNDER WATER OPERATING INSTRUCTIONS 1 STOP Read the safety information listed above Set the thermostat to the lowest setting or OFF Turn off all electric power to the furnace Nw This appliance does not have a pilot
30. STRUCTIONS SEALED COMBUSTION DOWNFLOW GAS FURNACES Forced Draft with Direct Ignition Hot Surface IMPORTANT ONLY INDIVIDUALS HAVING SHOULD ATTEMPT TO PERFORM SET UP HAS ROOF JACK GROWN BEEN CORRECTLY INSTALLED HAS FURNACE GAS VALVE AND BURNER ORI FICE BEEN TE CONVERTED FOR L P BL HAS FURNACE GAS VALVE BEEN FOR ALTITUDES ABOVE 2006 GAS WHERE APPL APPLICABLE IS GAS LINE OUTLET PRESS IMPORTANT PROPER FURNACE SET UP RETAILER HOMEOWNER AND IS NOT COVERED UNDER WARRANTY DLAS MODELS No Coil Cabinet For Installation In Manufactured Mobile Homes Models SET UP CHECK LIST PROVEN EXPERIENCE WITH THIS INSTRUCTIONS COMPLETE ho DGAT amp MODELS Ly INSTALLATION INSTR IS CROSS OVER DU HOME BUILDER AND L HAS FURNACE Ei TYPE OF EQUIPMENT NATURAL GAS IS 3 5 0 W C IR PROPERLY ADJUSTED PER UCTIONS CT INSTALLED PER EVCON INSTALLATION ORERATED THROUGH A CYCLE AND ADJUSTMENT IS THE RESPONSIBILITY OF THE With Built In Coil Cabinet 2 Recreational Vehicles amp Park 3 Modular Homes amp Buildings LE OF CONTENTS GENERAL SPECIFICATIONS AND INSTRUCTIONS FURNACE SPECIFICATIONS INSTALLATION STANDARDS Comply with Local Cod
31. TALLATIONS Return Air Grille Part No 7900 286P A Almond 7900 287P A White Return Air Closet Door Part No 7900 8881 Almond 7900 7771 C White Furnace to Closet Door Clearance Greater than 6 Inches The closet door MUST have a minimum of 250 Square Inches of free area in the upper half of the door Ifthe opening for return air is located in the side wall and below the top of the furnace casing a total side return must equal or exceed 350 sq in free area 6 min clearance must be provided on the side where the return is located 6 min clearance must be maintained in front of the furnace CLOSET FURNACE 6 or greater Closet to Door Clearance Figure 3 Closet to Door Clearance 6 or greater Additional Requirements Additional requirements for floor and ceiling return system for closet installed sealed combustion heating appliance are given in the next paragraph Floor or Ceiling Return Air System Floor or ceiling return air system for closet installed direct vent forced air heating appliance Listed in the next paragraph are the conditions to be met by Mobile Home Manufacturers to have U L acceptance of in floor or ceiling return air systems of closet installed di rect vent forced air heating appliances for Mobile Homes to be sold in the United States A The return air opening into the closet regardless of location i
32. be not more negative than minus 0 05 inch water column c Forfloor return systems the mobile home manufacturer or installer shall affix a prominent marking on or near the appliance where it is easily read when the closet door is open The marking shall read WARNING HAZARD OF ASPHYXIATION DO NOT COVER OR RESTRICT FLOOR OPENING or equivalent SPECIAL CLOSET INSTALLATIONS Furnace to Closet Door Clearance Greater than 1 Inch and Less than 6 Inches As an option to the lower grill an undercut of 2 1 2 will provide 50 Sq In of free area Clearance Greater than 1 Inch and Less than 6 Inches A The closet door MUST have a minimum of 250 Square Inches of free area in the upper half of the door and a minimum of 50 Square Inches offree area in the low er area of the door The lower closet door grille may be omitted if an undercut of 2 1 2 Inches is provided in the door A fully louvered closet door MUST have a minimum of 250 Square Inches of free area in the upper half of the door Figure 4 Furnace to Closet Door Clearance 1 to 6 Furnace to Closet Door Clearance Less than 1 Inch Clearance Less than 1 The closet door MUST have three return air grilles The total free area of the two upper grilles must be a minimum of 250 Square Inches The total free area of the lower grile MUST be a minimum of 50 Sq In NOTE Each grille MUST BE ALIGNED di
33. cal or state codes NOTE The gas line inlet on the gas valve is 14 N PT The gas line may be installed through the furnace floor or furnace side to the gas valve To install gas line and to connect it to the gas valve care must be taken to hold gas valve firmly to prevent mis alignment of the burner orifice or to damage gas valve which could result in improper heating explosion fire or asphyxiation DO NOT USE EXCESSIVE PIPE SEALANT ON PIPE JOINTS Pipe sealant metal chips or other foreign ma terial that could be deposited in the inlet of the gas valve when gas pipe is installed or carried through the gas piping into the gas valve inlet after installation may cause the gas valve to malfunction and could result in possible improper heating explosion fire or asphyxi ation Also pipe sealant must be resistant to Propane gas Where regulations require a main shut off valve shall be installed externally of furnace casing After piping has been installed turn gas on and check all connec tions with a leak detector or soap solution NEVER USE OPEN FLAME FIRE OR EXPLOSION COULD OCCUR Do not test the fuel system at more than 14 W C after furnace has been connected to fuel line Such testing could void the warranty Any test run above 14 W C may damage furnace control valve which could cause an explosion fire or asphyxiation A dirt leg may be required by some local codes to trap mois ture and contaminations
34. cured to the furnace before roof flange flashing is secured to the roof This will in sure a better alignment of the flue pipe and furnace flue col lar Caulk completely around the underside of the roof jack flashing to provide a rain tight seal before securing roof jack flashing to roof After roof jack flashing has been secured to the roof caulk carefully all around swivel joint with sealant supplied by furnace manufacturer TABLE 4 DLAS Roof Jacks TABLE 5 DGAT amp DGAM Roof Jacks Roof Jack Installation Dimensions Model 1 Number Adjustable Height 4000 7121 C 75 to 86 These dimensions are 4000 7141 C 83 to 104 from the floor to the top side of the roof 4000 7151 C 90 to 116 See Figure 8 4000 7171 C 127 to 157 4000 8161 C 4 85 to 101 4000 8181 C 4 99 to 129 Roof Jack Installation Dimensions Model 1 Number Adjustable Height 4000 7101 C 86 to 95 These dimensions 4000 7121 C 91 to 102 are from the floor to 4000 7141 C 99 to 120 the top side of the roof See Figure 9 4000 7151 C 106 to 132 4000 7171 C 143 to 173 4000 8161 C 4 101 to 117 These jacks have removable crowns 4000 8181 C 4 115 to 145 Note Itis recommended that the 7900 6171 17 Interior extension be used with these models for sizing of roof jack
35. d for 7 W C inlet pressure Pressure is reduced to 3 1 2 W C by the pressure regulator in the gas valve Propane Gas Operation Inlet pressure to the gas valve must be 11 W C When properly converted to Propane gas the pressure is regulated at 10 W C If the gas input to the furnace is too great because of excessive gas pressure wrong size orifice high altitude etc the burner flame will be sooty and may produce carbon monoxide which could result in unsafe operation explosion and or fire or as phyxiation Never remove or block open the burner observa tion cover on the furnace To do so may cause car bon monoxide to be drawn into the living space and may cause asphyxiation Observing Burner Operation 1 Observe burner to make sure it ignites Observe color of flame On natural gas the flame will burn blue with appreciably yellow tips On Propane gas a yellow flame may be expected If flame is not the proper color call a qualified serviceman for service See Figure 4 and Figure 5 Let furnace heat until blower cycles on Turn thermostat down Observe burner to make sure it shuts off OV e Let the furnace cool and blower cycle off Should overheating occur or the gas supply fail to shut off shut off the manual gas valve to the fur nace and allow burner to run until furnace cools down and blower shuts off before shutting off the electrical supply If any abnormalities are observed when checking for cor
36. derated properly will eventually render the furnace inoperable Deration of the orifice for furnaces installed in homes at elevations above 2 000 feet is not covered by the warranty This procedure is considered a part of the installation process and is required to make the furnace operate properly These furnaces are shipped from the factory with a natural gas orifice If you will be operating this furnace on LP liquid propane gas it will also be necessary to have the furnace converted The correct LP orifice is supplied with the furnace to allow operation at elevations below 2 000 feet If the furnace will be operating on LP gas at elevations above 2 000 feet the orifice supplied will be too large to allow proper operation You should contact your LP supplier for assistance in getting the derated orifice installed We hope you follow these instructions and enjoy many years of trouble free service If you have any questions please feel free to contact the technical assistance hot line at 316 832 6450 11 Evcon Industries Inc 3110 North Mead 1973 105 A Rev 1 6 95 Pl PO Box 19014 Evcon Wichita KS 67204 9014 LITHO IN U S A 12 DGAM DGAT amp DLAS SERIES HSI Gas Downflow Furnace Repair Parts List for DGAMO056BDD DGATO56BDD DLASOS6BDD DGATO70BDD DGAMO75BDD DGATO75BDD DLASO75BDD DGATO90BDD BURNER ORIFICE SEE CHART PERA 9 USED ON NO PA
37. e is level and c There are no obvious signs of deterioration of the furnace Filters It is very important that filters in your furnace or air condi tioning system be cleaned frequently or replaced when necessary Clean filters not only provide added comfort and a more healthful environment but also allow the sys tem to operate more efficiently Check filters every two or three weeks Your furnace is equipped with a permanent type filter which need not be replaced provided it is cleaned frequently The permanent filter may be washed in a mild solution of detergent and water and then rinsed thoroughly with clear water If the pores of the filter media become clogged with dirt or lint which cannot be washed out or if the filler becomes damaged it must be replaced A re placement filter should be of the permanent type and be of the same size as the old filter Flue Piping Inspect the flue piping connection at the furnace and the connection of the individual sections to ensure that pipe joints have not become disengaged and that there are no openings which could allow leakage of products of com bustion Inspect the termination of the flue outside the structure and look for any indication of carbon or soot streaks The presence of any soot would indicate a mal function and the cause must be determined and corrected Motor Lubrication The circulating air blower motor and vent blower are per manently lubricated and do not requir
38. e periodic lubrica tion Return Air On some closet installations the return air opening to the furnace may be on the floor and or on the door and or on the side wall ofthe closet The upper grille on the front ofthe furnace admits return air to the blower Return air must be provided back to the circulating blower in order to provide air distribution IMPORTANT NOTICE Do not obstruct these openings including the grille on the furnace To do so will cause the furnace to activate the high limit and shut down or it may cause asphyxi ation This equipment must be serviced only by qualified indi viduals specially trained and experienced in servicing of this type equipment and related system components such as duct systems air conditioning etc Installation and service personnel are required to be licensed in some areas Persons not qualified should not attempt to service this equipment Your Serviceman Your furnace s best friend is your qualified serviceman If the unit gives any indication of improper operation call your serviceman If the serviceman is allowed to perform the normal routine care of your furnace he can many times detect potential difficulties and make corrections before trouble develops Preventative maintenance ofthis type will allow you to operate the unit with a minimum of concern and at the same time will pay for itself in added years of comfort When You Call For Service Assistance Very often time
39. eel BURNER ORIFICE CHART we o _ 9951 1281 9951 0821 10 5 8 Dia x 7 1 8 x 1 2 9951 1491 9951 0931 9951 1541 9951 0961 9951 1771 9951 1041 Nat LP wv NOTE The 7707 326P is a designed approved alternate for this valve NOTE All parts with three digit suffix numbers are Special Order Parts These parts are subjectto factory availability and require extra time for delivery Suggested Parts Inventory 2 of Units Installed Minimum 1 each Evcon Industries Inc 3110 North Mead Box 19014 1973 106 B Rev 5 4 97 Wichita KS 67204 9014 28 USER S INFORMATION MANUAL for Gas Downflow Furnace NOTICE TO OWNER USER THIS BOOKLET CONTAINS THE OPERATING INSTRUCTIONS AND OTHER RELATED INFORMATION FOR YOUR FURNACE AND SHOULD BE RETAINED FOR FUTURE REFERENCE WARNING If the information in this manual is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS e Do not try to light any appliance e Do nottouch any electrical switch do not use any phone in your building e Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions e f you cannot reach your gas supplier call the
40. ending on their agreement Adjustments of 9 On Propane gas almost all of the flame will be yellow this type are not covered by the warranty although some blue should still be present at the base of the flame next to the end of the burner See Figure 21 CAUTION 6 Ifthe flame is too yellow the combustion air should be increased If the flame is excessively blue no yellow Combustion air adjustments must be made only by the combustion air should be decreased a qualified technician Improper air adjustment 7 To adjust the combustion air loosen the lock screw may cause unsafe operation explosion or asphyxi ation holding the combustion air rod in place Push in on the rod to increase the combustion air Pull out on the com bustion air rod to decrease the combustion air Tighten lock screw after adjustment is made Do not complete ly close air damper at any time Complete closure of air damper to burner will result in improper operation See caution above View of Burner Through the Observation Window Correct Amount of Too Little Primary Air Primary Air Push Shutter Rod In Figure 20 Natural Gas Flame Appearance Too Much Primary Air Pull Shutter Rod Out Correct Amount of Too Little Primary Air Primary Air Too Much Primary Air Push Shutter Rod In Pull Shutter Rod Out Figure 21 Propane Gas Flame Appearance 24 If Furnace Fails to Operate Properly 1 Check setting of thermostat and position of
41. ents are 1 Converting the furnace to use another type of gas Correcting faulty duct work in the home Correcting wiring problems in the electrical circuit to the furnace 4 Resetting circuit breakers or other switches 5 Adjusting the burner air shutter or service calls made to correct problems caused by improper air adjust ment 6 Correcting problems caused by improper gas supply pressure to the furnace 7 Instructional training on how to light and operate fur nace 8 Furnace problems caused by installation of air condi tioner heat pump or other air quality device which is not approved 9 Problems caused by improper installation of the fur nace flue assembly roof jack 10 Adding a roof jack extension because of unusual wind conditions 11 Adjusting or calibrating the thermostat You should establish a firm understanding of these re sponsibilities with your manufactured housing dealer ser vice company or gas supplier so there will be no misunder standing at a later time SEQUENCE OF OPERATION This furnace is equipped with an electronic control system which automatically supervises burner and fan operation A green indicator light displays during normal operation This indicator light also informs the home owner when cer tain basic services are needed In response to a call for heat by the room thermostat the burners are lighted by a hot glowing ignitor at the beginning of each operation cycle
42. es HIGH ALTITUDE INSTALLATIONS MINIMUM FURNACE CLEARANC RETURN AIR REQUIREMENTS CLOSET INSTALLATIONS ES Furnace to Closet Door Clearance Greater than 6 Additional Requirements Floor or Ceiling Return Air System SPECIAL CLOSET INSTALLATIONS Furnace to Closet Door Clearance Greater than 1 Inch and Less than 6 Inches Furnace to Closet Door Clearance Less than 1 Inch AIR DISTRIBUTION SYSTEMS ROOF JACKS Locating and Cutting Roof Jack Opening Installing Roof Jack in Roof CEILING RINGS DUCT CONNECTORS TEMPLATE amp CUTOUT DIMENSIONS III DLAS SERIES FURNACES Installation Procedure for DLAS Furnace DGAT amp DGAM SERIES FURNAC ES occus eain kcu Cie Installation Procedure for DGAT amp DGAM Furnaces CONNECTING ROOF JACK TO FURNACE VENT SYSTEM INSTALLATION INSTRUCTIONS EXISTING FURNACE REPLACEM NEW HOME INSTALLATION ENDEs ul trs e doe INSTALLATION IN SNOW REGIONS ELECTRICAL WIRING
43. est autho rized service technician to 1 Clean filters Clean all lint and dust from around fur nace 2 Remove fan and clean all dust and lint from unit with stiff bristle brush 3 Inspect combustion chamber the transition into the blower compartment flue collar and roof jack 4 Check the gas valve and line connections for leaks 5 Make any adjustments necessary for good operation NOTE The coil panel provides a good removable access for in specting inside the furnace casing Smoke or reflected light inside the casing indicates the presence of leaks in the heat exchanger Use of furnace or air conditioning components that are not included in the Underwriter s Laboratories certifica tion of this appliance may create a hazard will invali date the certification and will in many states make in stallation illegal UL listed air conditioning components are specified on the furnace label IMPORTANT As an owner of a new furnace you need to know the following information If your home is located at an elevation above 2 000 feet the burner orifice in your furnace will need to be derated Please contact the nearest authorized Service Center to have this procedure performed properly Your dealer or gas company may have already applied the proper deration for your unit If so they should be able to advise you as such If not you need to have the deration made to insure continued use of your furnace Not having the unit
44. etal screws us ing holes provided in the connector and the sub base See Figure 13 Secure sub base to floor with 2 or more screws or nails B Install Furnace Check to make sure roof jack is not extending too far down into furnace location Slide furnace into location and align over floor opening Pre cut openings and knock outs are provided in furnace base to install a front fuel line and or front re frigerant lines If rear entrance lines are to be used they must be installed before the duct connector is installed and secured in place For air conditioning lines remove the knock out C Securing Furnace Make any minor adjustments in the furnace location necessary to insure that the opening in the furnace bot tom is centered over the opening in the duct Secure furnace to sub base as required through holes at front and rear of furnace Holes for screws are located in bottom flange front corners and rear flanges Secure furnace to wall at top by using metal strap pro vided See Figure 13 Manufacturers may add straps equivalent to provided straps if required for securing furnace to structural member For improved air seal duct connector flanges may be sealed to the sub base with aluminum duct tape Bend Bottom Tabs Over And Onto The Underneath Duct Service Figure 13 Sub base Duct Connector DGAT amp DGAM SERIES FURNACES Installation Procedure for DGAT amp DGAM Fur
45. f floor surface 7681 6691 7681 609 9 Duct Connector For Ducts 8 1 8 below top of floor surface 7681 6611 7681 611 11 Duct Connector For Ducts 10 1 8 below top of floor surface 7681 6711 7681 612 12 Duct Connector For Ducts 11 1 8 below top of floor surface TEMPLATE amp CUTOUT DIMENSIONS 15 7 8 F 9 3 4 Duct Duct Cutout Locating Dimensions Hole ES 11 9 16 i N lt 13 9 16 i Flue Center Floor Cut out Line Duct Connector may be used positioned in any of four 4 positions to fit duct A Casing Front Door Front Figure 11 Duct Connector Dimensions Figure 12 Template 13 DLAS SERIES FURNACES Installation Procedure for DLAS Furnace The following steps are listed for installation of furnace and need not be performed in the exact order as listed Follow this procedure to avoid serious misalignment of fur nace duct connector opening and supply duct A This Furnace requires a SUB BASE Included For convenience a template is provided on the furnace shipping carton This may be cut out and used to accu rately locate furnace floor and vent openings See Figure 12 Locate template on floor to provide proper clearances to the walls and the front Cut 2 diameter hole or small square hole as indicated on te
46. g Polarity Wired to Furnace Power If a problem is indicated contact your authorized service person THE FURNACE CONTROLS AND THEIR FUNCTION System Switch this system switch turns ON or OFF the 120 volt electrical circuit that powers the furnace controls and the blower motor The system switch must be turned ON for the furnace to operate Turn the switch to OFF when oiling the blower motor cleaning the blower etc Limit Control this furnace is protected by two 2 high temperature limit switches The lower limit switch is an au tomatic reset type IMPORTANT THE UPPER LIMIT SWITCH NEAR LEFT SIDE OF BLOWER IS A MANUAL RESET TYPE LIMIT SWITCH See Figure 1 IF BURNER DOES NOT FUNCTION TURN SYSTEM SWITCH TO OFF AND PUSH RESET BUTTON IN CENTER OF LIMIT SWITCH Ifthe upper limit switch trips again soon after resetting turn the furnace System Switch to the OFF position and call your authorized service technician THE CHUTE TO LEFT OF BLOWER IS HOT USE CARE WHEN RESETTING LIMIT SWITCH TO AVOID BURNS TO HAND AND ARM Gas Valve gas valves are 100 shut off type and will fail safe if for some reason the gas is turned off or the pilot goes out They are also of the modulating or step open type which means they open to a low fire position and after a few seconds step open to high fire 1 THIS APPLIANCE DOES NOT HAVE A PILOT IT IS EQUIPPED WITH AN IGNITION DEVICE WHICH AU TOMATICALLY LIGHT
47. g may be used as shown in Figure 10B to provide closer clear ance around roof jack The duct connector is designed for use on ducts down to 12 in width When using the connector on smaller width ducts there will not be sufficient clearance to bend the tabs on two sides of the duct connector In such cases the tabs may be attached to the sides of the duct by using sheet metal screws or other suitable fasten ers Holes for sheet metal screws are provided in three 3 tabs on each side of the duct connector If more than 3 tabs need to be used to provide a more secure and air tight con nection the remaining tabs can also be fastened to the duct with screws after drilling the required screw holes If tape is used to provide a better air seal it should be a type Figure 10 Ceiling Rings approved by the applicable national or local codes TABLE 6 Duct Connectors Sales Package Part Number Depth 7681 6621 7681 602 2 Duct Connector For Ducts 1 1 8 below top of floor surface 7681 6631 7681 603 3 Duct Connector For Ducts 2 1 8 below top of floor surface 7681 6651 7681 605 5 Duct Connector For Ducts 4 1 8 below top of floor surface 7681 6661 7681 606 6 Duct Connector For Ducts 5 1 8 below top of floor surface 7681 6671 7681 607 7 Duct Connector For Ducts 6 1 8 below top of floor surface 7681 6681 7681 608 8 Duct Connector For Ducts 7 1 8 below top o
48. ister blowing directly on the thermostat c Connect the hot wire to the BLACK pigtail lead and the neutral wire to the WHITE pigtail lead Se cure all connections with suitable wire nuts and wrap with electrical tape d Connectthe ground wire to the grounding screw e Reinstall the control panel cover and secure mounting screw CONNECT THERMOSTAT WIRES a Insert 24 volt wires through the small plastic bush ing just above the control panel b Connect the thermostat wires to the furnace low voltage pigtails See Figure16 c Connectlow voltage circuit to the wall thermostat pigtails A separate 120 V A C supply circuit must be used for the furnace The circuit should be protected by a 15 amp fuse or circuit breaker NOTE Cover should not be removed except when servicing the controls The wall thermostat should be mounted approximately 5 feet from the floor The preferred location is on an inside wall situated in an area with good air circulation and where the temperature will be reasonably representative of other living areas the thermostat is controlling THERMOSTAT WIRING FOR DGAT AND DGAM SERIES Blend Air Control Box HEAT COOL OFF VENTILATIO Wall Thermostat Furnace Control Box 7 N 7 L BUUM Not Factory Installed Figure17 Thermostat Wiring 19 THERMOSTAT WIRING FOR DLAS HEAT ONLY SERIES Wall Thermostat Rear View Furnace Control Box
49. mplate Locate template so that furnace opening outline is cen tered over under floor supply duct as accurately as possible This is important because of the limited ad justment from side to side and from front to rear of the duct connector Locate under floor duct through hole and center floor cut out opening on template over duct Accurately cut floor cut out opening from template mark floor opening remove template and cut floor on outside edge of marked line Position sub base over hole Duct connectors will fit openings of sub base in any one of four 4 positions Place proper duct connector in the open ing in the best position duct connector may be shifted in either direction for best location Mark duct opening with a scribe or marking pen then re move duct connector Cut hole in duct to correct size ac Secure duct connector to sub base with 4 Screws Bend tabs of duct connector under duct opening to secure to the supply duct Secure Sub base to floor firmly with 2 or more screws Or Secure sub base to floor with 2 nails or screws TABS TABS eA 1 Insert Duct Plenum Con 2 nector Into Duct Cut out cording to dimensions shown in Figure 11 Cut duct accu rately to prevent air leakage Reinstall duct connector with tabs inside of hole in the duct and bend tabs up firmly against underneath side of duct Secure duct connector with four 4 sheet m
50. naces The following steps are listed for installation of furnace and need not be performed in the exact order as listed Follow this procedure to avoid serious misalignment of fur nace duct connector opening and supply duct A This Furnace requires NO sub base For convenience a template is provided on the furnace shipping carton This may be cut out and used to accu rately locate furnace floor and vent openings See Figure 12 Locate template on floor to provide proper clearances to the walls and the front Cut 2 diameter hole or small square hole as indicated on template Locate template so that furnace opening outline is cen tered over under floor supply duct as accurately as possible This is important because of the limited ad justment from side to side and from front to rear of the duct connector Locate under floor duct through hole and center floor cut out opening on template over duct Accurately cut floor cut out opening from template mark floor opening remove template and cut floor on outside edge of marked line Duct connectors will fit opening in any one of four 4 posi tions Place proper duct connector in the opening in the best position duct connector may be shifted in either di rection for best location Mark duct opening with a scribe or marking pen then re move duct connector Cut hole in duct to correct size ac cording to dimensions shown in Figure 11 Cut duct accu rately to
51. ng is installed If a set back type thermostat is employed be sure that the ther mostat is in the correct operating mode Check to see that electrical power is ON Check to see that the knob on the gas control valve is in the full ON position 4 Make sure filters are clean return grilles are not ob structed and supply registers are open 5 Be sure that furnace flue piping is open and unob structed If the cause for the failure to operate is not obvious do not attempt to service the furnace yourself Call a quali fied service agency or your gas supplier PERIODIC INSPECTION AND MAINTENANCE BY HOMEOWNER Itis recommended that the homeowner or user make an in spection ofthe furnace at least every 90 days or more often if desired It is also recommended that a qualified service agency inspect the furnace before each operating season the furnace is used both heating and air conditioning and at any time that there is an indication of malfunction The owner user should not attempt to disassemble the furnace unless experienced and qualified to do so FOR SAFETY Turn off electrical power to furnace be fore performing service such as cleaning filters The furnace installation should be examined to determine that a All flue product carrying areas external to the fur nace chimney vent connector etc are clear and free of obstructions b The physical support of the furnace is sound with out sagging and the furnac
52. nsulation which might have fallen in during pre installation steps Do not proceed unless all de bris have been cleaned out or removed 4 After installing vent pipe on furnace top collar check to make sure there is no gap in back or side between the pipe collar and the furnace casing top INSTALLATION IN SNOW REGIONS When the combustion air pipe inlet is covered or blocked with snow the furnace will not operate properly due to the depleted combustion air supply Therefore if the furnace will be located in regions where snow accumulation on the roof exceeds 7 or in H U D Snow Load Zones a 7680B6541 roof jack extension is recommended ELECTRICAL WIRING TO INSTALLER INCOMING POWER MUST BE PO LARIZED OBSERVE COLOR CODING SHOCK HAZARD DISCONNECT ELECTRICAL POWER SUPPLY TO THE UNIT BEFORE SERVICING TO AVOID THE POSSIBIL ITY OF SHOCK INJURY OR DAMAGE TO THE EQUIP MENT CONNECT POWER SUPPLY WIRES a Remove the field wiring cover b Insert 115 volt wires through the large plastic bush ing on the left side of the furnace See Figure 16 If conduit is used it should be secured to the control box This screw does not need to be removed in order to remove the field wiring cover just loosen Figure 16 WALL THERMOSTAT Avoid locations where the thermostat could be subject to drafts from outside or exposed to direct light from lamps sun fireplaces etc or affected by air from a duct reg
53. prevent air leakage Reinstall duct connector with tabs inside of hole in the duct and bend tabs up firmly against underneath side of duct Secure duct connector to floor with four 4 sheet metal Screws using holes provided in the connector See Figure 14 B Install Furnace Remove panel from air conditioning compartment Check to make sure roof jack is not extending too far down into furnace location Slide furnace into location and align over floor opening Pre cut openings and knock outs are provided in furnace base to install a front fuel line and or front re frigerant lines If rear entrance lines are to be used they must be installed before the duct connector is installed and secured in place For air conditioning lines remove the knock out C Securing Furnace Make any minor adjustments in the furnace location necessary to insure that the opening in the furnace bot tom is centered over the opening in the duct Secure furnace to floor as required through holes at front and rear of furnace Holes for screws are located in bottom flange front corners and rear flanges Secure furnace to wall at top by using metal strap pro vided See Figure 14 Manufacturers may add straps equivalent to provided straps if required for securing furnace to structural member Secure furnace to duct connector base with 4 Screws Bend tabs of duct connector under duct opening to se cure to
54. re observed when checking for cor rect operation such as burner failing to ignite or to turn off sooty flame etc call your nearest authorized service tech nician as shown in the Service Center List included in the home owner envelope with the furnace Combustion Air In order for the burner flame to burn efficiently it must re ceive adequate combustion air The amount of combustion air can be changed by operat ing the combustion air adjustment rod located beneath the gas valve See Figures 19 and 20 The adjustment rod is set at an average position at the factory and may be properly set for many applications However the amount of combustion air required will vary depending on altitude actual BTU content of the gas be ing used gas pressure conversion to another gas and other variable factors To adjust the combustion air To light and operate furnace see label inside lower nace door 2 Allow the burner to burn for about 1 MINUTE Therefore it is essential that the burner flame be observed 3 Lookthrough the observation window and observe the and any necessary adjustments are made before the fur appearance of the flame e rece the On natural gas the base of the flame should be blue urner alr IS COnSICerecC part tae Norma Tiere el Mp but the tips of the flame will be yellow See Figure 20 procedure andis the responsibility of either the home seller or buyer dep
55. rect operation such as burner failing to ignite or to turn off sooty flame etc call your nearest authorized service tech nician as shown in the Service Center List included in the home owner envelope with the furnace Combustion Air In order for the burner flame to burn efficiently it must re ceive adequate combustion air The amount of combustion air can be changed by operat ing the combustion air adjustment rod located beneath the gas valve See Figure 1 The adjustment rod is set at an average position at the factory and may be properly set for many applications However the amount of combustion air required will vary depending on altitude actual BTU content of the gas be ing used gas pressure conversion to another gas and other variable factors Therefore it is essential that the burner flame be observed and any necessary adjustments are made before the fur nace is put into service at the final home site Adjusting the burner air is considered part of the normal home set up procedure and is the responsibility of either the home seller or buyer depending on their agreement Adjustments of this type are not covered by the warranty Combustion air adjustments must be made only by a qualified technician Improper air adjustment may cause unsafe operation explosion or asphyxi ation To adjust the combustion air 1 Tolight and operate furnace see label inside lower fur nace door 2 Allow the burner to b
56. rectly opposite the corresponding return air grille of the furnace door Figure 5 Furnace to Closet Door Clearance Less than 1 9 AIR DISTRIBUTION SYSTEMS For proper air distribution the supply duct system shall be designed so that the static pressure does not exceed the listed static pressure rating on the furnace rating plate Three typical distribution systems are illustrated in Figure 6 A Single trunk duct B Location size and number of registers should be selected on the basis of best air distribution and floor plan of the home The Air Temperature Rise is to be adjusted to obtain a tem perature rise within the range s specified on the furnace rating plate Transition Duct with Branches Transition duct Dual trunk duct with crossover connector 1 Crossover S Dual trunk duct 1 Crossover Duct must be centered directly under furnace Use 12 Diameter Round or equivalent insulated Flex duct only 3 Terminate Flex duct opposite furnace in the center of the trunk duct Flex duct material must be pulled tight No Loops or unnecessary dips Air Flow may be impeded Figure 6 Air Distribution Systems 10 ROOF JACKS Only use the appropriate roof jack See TABLE 4 amp TABLE 5 for correct application Do not exceed the maximum height as determined from TABLE 4 amp TABLE 5 Installer should allow an addition al 1 1 travel before the
57. s to be sized not less than specified on the appliance s rating plate B If the return air opening is located in the floor of the closet versus the vertical front or side wall the open ing is to be provided with means to prevent its inadver tent closure by a flat object placed over the opening C The cross sectional area of the return duct system when located in the floor or ceiling ofthe mobile home leading into the closet is to be not less than that of the opening specified on the appliance s rating plate D Thetotalfree area of openings in the floor or ceiling reg isters serving the return air duct system is to be not less than 15096 of the size of the opening specified on the appliance s rating plate At least one such register is to be located where likelihood of its being covered by carpeting boxes and other objects is minimized E Materials located in the return duct system have a flame spread classification of 200 or less Non combustible pans having one inch upturned flanges are located beneath openings in the floor re turn duct system G Wiring materials located in the return duct system con form to Article 300 22 b amp c of the National Electric Code ANSI C1 NFPA 70 H Gas piping is not run in or through the return duct sys tem l The negative pressure in the closet as determined by test with the air circulating fan operating at high heat ing speed and the closet door closed is to
58. sonnel are required by some states to be licensed Persons not qualified shall not install this equipment or interpret these instructions NOTE The words Shall or Must indicate a requirement which is essential to satisfactory and safe product performance The words Should or May indicate a recommendation or advice which is not essential and not required but which may be useful or helpful FURNACE SPECIFICATIONS TABLE 1 Furnace Specifications Automatic ignition with Built in Coil Cabinet 4 A C Ready Model No Factory Equipped for use with Input BTUH Output BTUH DGAMO56BDD NATURAL GAS 56 000 46 000 DGAMO75BDD NATURAL GAS 75 000 61 000 DGAT Automatic Ignition with Built in Coil Cabinet 3 Ton A C Ready Model No Factory Equipped for use with Input BTUH Output BTUH DGATO56BDD NATURAL GAS 56 000 46 000 DGATO70BDD NATURAL GAS 70 000 57 000 DGATO75BDD NATURAL GAS 75 000 61 000 DGATO90BDD NATURAL GAS 90 000 72 000 DLAS Automatic Ignition Heating Only No Coil Cabinet Model No Factory Equipped for use with Input BTUH Output BTUH DLASO56BDD PROPANE 56 000 47 000 DLASO75BDD PROPANE 75 000 62 000 TABLE 2 Electrical Specifications Electrical Power Supply 120 Volts 60 Hz 1 Phase Breaker or Fuse 15 Amp Thermostat Circuit 24 Volt
59. t indicate a requirement which is essential to satisfactory and safe product performance The words Should or May indicate a recommendation or advice which is not essential and not required but which may be useful or helpful SAFETY PRECAUTIONS For your safety Do not store or use flammable liquids vapors or materials in the immediate area near the furnace or other heating appliance Do not store brooms mops or equipment or materials near the furnace in any confined space which may be around or in front of the furnace Adequate ventilation and combustion air must be provided to insure satisfactory and safe operation of the furnace Air openings in casing front panel and vestibule top panel must not be obstructed Any openings into the furnace closet or confined room in which the furnace is located for the entrance of combustion and ventilation air must be kept open and unobstructed failure to observe these require ments could result in asphyxiation Do not use this furnace if any part has been under water Immediately call a qualified service technician to inspect the furnace and to replace any part of the control system and any gas control which has been under water Should overheating occur or the gas supply fail to shut off shut off the manual gas valve to the appliance before shut ting off the electrical supply Do not store or use halogen emitting substances in the vi cinity of this appliance Such substances incl
60. tions In an air conditioner is installed which does not use the blower for air distribution and operates completely inde pendent of the furnace the thermostat system must have an interlock to prevent the furnace and air conditioner form operating at the same time This interlock system usually contains a heat cool switch which must be turned to either HEAT or COOL to activate either heating or cooling opera tion or a positive OFF switch on the cooling thermostat When used in connection with a cooling unit the furnace shall be installed parallel with or on the upstream side ofthe cooling unit to avoid condensation in the heat exchanger For installations with a parallel flow arrangement the fur nace must be equipped with a damper to prevent cold air from being discharged up around the heat exchanger Cold air causes condensation inside the exchanger and can cause it to rust out which can allow products of com bustion to be circulated into the living area by the furnace blower resulting in possible asphyxiation An air flow acti vated automatic damper P N 7900 6771 is available from furnace manufacturer JOJOO 1294400 104 Jo 1894 0001 Jed Z ueD xo epninje 1991 000 YORE JO Z Jo 1991 000 18d Ayoedeo 1ndino ajelag 1991 0002 e oqv 196
61. ude chlorine based cleaners and swimming pool chemicals water soft ening chemicals de icing salts and chemicals cleaning solvents such as carbon tetrachloride or perchloroethy lene halogen type refrigerants printing inks paint and paint removers varnishes hydrochloric acid cements and glues and masonry acid washing materials Improper installation adjustment alteration service or maintenance can cause property damage personal injury or loss of life Installation and service must be performed by a qualified installer service agency or the gas supplier Never attempt to modify this furnace Fire explosion or as phyxiation may result If malfunction occurs obtain the as sistance of a qualified service agent WARRANTY AND RESPONSIBILITIES It is the sole responsibility of the home owner to make cer tain that the gas furnace has been correctly set up and con verted to the proper fuel Propane or Natural gas and ad justed to operate properly The manufacturer warrants the furnace to be free from de fects in material or workmanship for the stated time in the warranty agreement see warranty certificate packed with the furnace However the manufacturer will not be responsible for any repair costs to correct problems due to improper set up improper installation furnace adjustments improper oper ating procedure by the user etc Some specific examples of service calls which cannot be included in warranty paym
62. urn for about 1 MINUTE 3 Lookthrough the observation window and observe the appearance of the flame 4 On natural gas the base of the flame should be blue but the tips of the flame will be yellow See Figure 4 5 On Propane gas almost all of the flame will be yellow although some blue should still be present at the base ofthe flame next to the end of the burner See Figure 5 6 Ifthe flame is too yellow the combustion air should be increased If the flame is excessively blue no yellow the combustion air should be decreased 7 To adjust the combustion air loosen the lock screw holding the combustion air rod in place Push in on the rod to increase the combustion air Pull out on the com bustion air rod to decrease the combustion air Tighten lock screw after adjustment is made Do not complete ly close air damper at any time Complete closure of air damper to burner will result in improper operation See caution above View of Burner Through the Observation Window Correct Amount of Primary Air Too Little Primary Air Push Shutter Rod In Too Much Primary Air Pull Shutter Rod Out Figure 4 Natural Gas Flame Appearance Correct Amount of Primary Air Too Little Primary Air Push Shutter Rod In Too Much Primary Air Pull Shutter Rod Out Figure 5 Propane Gas Flame Appearance If Furnace Fails to Operate Properly 1 Check setting of thermostat and position of HEAT COOL switch if air conditioni
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