separated combustion gas fired blower unit heaters
Contents
1. NOTLY 01 5 21313 A v IN3NOdWD3 OL 8 31242 09 3SVHd 1 BS E A380 A9 5 Erant Perea mi m vuoan O08 9 1234534 HLIA LON SI 1 DA SII R PIRATES NIUILSOS8WLUJS N33 ND 5 SYDLONGNOD Y3dd09 3501 8 salia iN3NDJWUS NY 8 Xa 38 1 3ONVIIddV TC3INnUND 38 1 LINN x NULLO3NNOO NO 5 8 mss 353 9978 HITA Caldas SV 9NIDIAN3S 380438 N3 Ud NSS qsgniovanw aa LINN NOILSQEWDO 2814 anna 78 TWNIDTSO 30 ANY 123 025184 x G31Vvavd3s i 11 INSTALLATION VENTING COMBUSTION AIR VENTING AND PIPING AWARNING Never operate unit heaters without combustion air and flue gas piping in place or severe personal injury or death may occur A WARNING CARBON MONOXIDE Your venting system must not be blocked by any snow snow drifts or any foreign matter Inspect your venting system to ensure adequate ventilation exists at all times Failure to heed these warnings could result in Carbon Monoxide Poisoning symptoms include grogginess lethargy inappropriate tiredness or flu like symptoms The combustion air system installation must be in accordance with the latest edition N F P A 54 ANSI Z2232. a 899 TI3AA3NDH SN AIWADASNYXL porren caca 1 CAd AWAL 4 gt Add aL HL 1 m OV ASIT 999 Eu O Ja8vds 1 xX AYTO 4 53 DLA 2 2 ojo 055 US AdZ W ojo 3010312313 705 AW SOLINDI 00985 E c4 LH AVT3B XOLVA a H 29 51 Av130 3WII 1 T LIWII 5 11 9 ds AVT30 NYS 5 4 29 2 v2 3 1227 e vA 06 PY Ave 2 OL sol AX III 1 B H2IIAS t 2 8 HILIAS 331NIA 33AWnS LINDT 2v18 4 mE ug nd 10 SOLOW 33A LD 18 NV 3 AOL AVA aoLavad gt a 6001 81 7101 8 1 VISUNS3HI NO NV 01 Hv D 5 150 8 193NNDOSI g 0 7 ra 5 5 3WIL 130 3WIL Q T 8 puc rH 3 31 Lec EE 8013Vad a0LOW L LVLSOWSSHL Nv 4 33 018 5 a3aavi 791401214 052 001 1 1 LA d 2268 2 2002 LIMIT SIANCIIDAd dn 18915 AVT3d 9013994 525 XIADA 009 001 ADTI3A ONY ALINDI O le2 ONY ONIdId ONILN3A 4 ce NDRLIANNOS U3aWNN IAIA 5 19151200 MD 1915 1 B 5 amp H S 2 600 15931 19 30 ONLIVM a 1
3. ST 1 9S 1 09 m REN puse Te PEL wavs Eyl ho To Xo CS 91 0 553 4 aol vel MDSN3S 5 Mo ad 105 d E AW SOLINST 0229 an E ex CX SOL sad H qq LH 265 of AYTAC 01 T 9 ADLINSI MDSN3S AV130 3WIL NV4 E ds W 5 Ad TA S130A SHL i8 3 mot Sy 0429 V 06 777 HA IND HA N3WNDJX Ava 01 6 se tks OND Sd s HOLIAS adinin aans e MIIS e HA OTH Jens s 3ald E eL Jvala ND LDN 014940 aol ava 83AU I8 NVJ pg 6001 Il 7101 IVISUWS3HI 01 1 123 025104 ie o T 5 1359 AV 30 1 AVT3U Q p eee UPS NN y 5 TEF 1 3940 09 NI 3NI1 21 M NZASA OTE T 19150 43 1 CwINDI2Id NDILINDI 0229 LTIDIA LA Cd 266 2 9002 LINI 53 dn 19915 AVT3U 3WIL 19 ms 082 001 834018 009 001 A un B ONY M LINSI ONY 9NIdId NIINJA 4 M3EHDN 1visiond an 19151 14 emm sono a0 oe uni vase S ONAYA SIDA earner erred ks ON NU NULLO3NNDO 123410 AVTXI 3WIL 5 LIN 8 sur
4. 1 Improper venting 1 Refer to Installation Venting K Burner won t turn off 1 Poor thermostat location 1 Relocate thermostat away from drafts 2 Defective thermostat 2 Replace thermostat 3 Improper thermostat or transformer 3 Check wiring per diagrams wiring at gas valve 4 Short circuit 4 Check operation at valve Look for short such as staples piercing thermostat wiring and correct 5 Defective or sticking gas valve 5 Replace gas valve 6 Excessive gas supply pressure 6 Refer to Operation L Rapid burner cycling 1 Loose electrical connections at gas 1 Tighten all electrical connections valve or thermostat 2 Excessive thermostat heat anticipator 2 Adjust thermostat heat anticipator for longer cycles Refer to Operation 3 Unit cycling on high limit 3 Check for proper air supply across heat exchanger 4 Poor thermostat location 4 Relocate thermostat Do not mount thermostat on unit 5 Draft on Pilot 5 Eliminate drafts Refer to Installation 6 Defective ignitor control if applicable 6 Replace ignitor 7 Unit cycling on high limit 7 Check for proper air supply across heat exchanger 8 Defective high limit switch 8 Jumper limit switch terminals 1 and 2 If burner operates normally replace Switch M Noisy 1 Fan blades loose 1 Replace or tighten 2 Fan blades dirty 2 Clean fan wheel 3 Vibration isolators deteriorated 3 Replace vibration isolators
5. 7 The equivalent length of the combustion air system must not be less than 5 feet 1 5m and must not exceed 50 feet 15 2m Equivalent length equals the total length of straight pipe plus 15 feet 4 6m for each 90 elbow and 5 feet 1 5m for each 45 elbow NOTICE For optimum performance keep the combustion air system as straight as possible 8 Each slip joint must be secured with at least three corrosion resistant screws Two full turns of 3m 425 Aluminum Foil Tape or its equivalent must then be used to seal each joint General Electric RTV 108 Dow Corning RTV 732 or an equivalent may be used instead of the tape For horizontal combustion air systems longer than 5 feet 1 5m the system must be supported from overhead building structures at 3 foot 1m intervals EXHAUST VENTING A WARNING Never operate unit heaters with out combustion air and flue gas piping in place or severe personal injury or death may occur Vent system installation must be in accordance with the latest edition of N F P A 54 ANSI Z223 1 National Fuel Gas Code In Canada installation must be in accordance with CGA B149 1 Installation Code for Natural Gas Burning Appliances and Equipment and CGA B149 2 Installation Code for Propane Burning Appliances and Equipment A Breidert Type L or Fields vent cap furnished by the customer must be installed at the termination point of the vent system Figures 9A 9B 10A amp 10B
6. Operation Replace regulator section of combination gas valve or complete valve or Check with local gas supplier for proper orifice size and replace Refer to Operation D Yellow tip flame some yellow 1 Insufficient primary air 1 Open air shutters Refer to tipping on propane gas is Operation permissible 2 Clogged main burner ports 2 Clean main burner ports 3 Misaligned orifices 3 Replace manifold assembly 4 Clogged flue collector 4 Clean flue collector 5 Air shutter linted 5 Check for dust or lint at air mixer opening and around the air shutter 6 Insufficient combustion air 6 Clean combustion air inlet openings in bottom panel see Installation E Floating flame 1 Blocked venting 1 Clean flue Refer to Installation 2 Insufficient combustion air 2 Clean combustion air inlet openings in bottom panel see Installation 3 Blocked heat exchanger 3 Clean heat exchanger 4 Air leak into combustion chamber or 4 Determine cause and repair flue collector accordingly F Gas Odor 1 Shut off gas supply immediately 1 Inspect all gas piping and repair 2 Blocked heat exchanger venting 2 Clean heat exchanger flue 3 Drafts around heater 3 Eliminate drafts Refer to Installation 4 Negative Pressure in building 4 See Installation 5 Blocked flue collector 5 Clean flue collector G Delayed ignition 1 Excessive primary air 1 Close air shutter Refer t
7. 130 1 Determine the required Ft Hr by dividing the rated heater input by 1000 For SI Metric measurements Convert unit Btu Hr to kilowatts Multiply the units input KW by 0 0965 to determine Cubic Meters Hour from the table the metric conversion factors listed in General Safety section for more SI unit measurements conversions 3 FOR PROPANE GAS Multiply the Cu Ft Hr Cubic Meters per Hour value by 0 633 then use the table 2 FOR NATURAL GAS Select the pipe size directly 4 Refer to 7 INSTALLATION 1 Install the gas piping accordance with applicable local codes 2 Check gas supply pressure Each unit heater must be connected to a gas supply capable of supplying its full rated capacity as specified in Table 4 A field LP tank regulator must be used to limit the supply pressure to maximum of 14 in W C 3 5 kPa piping should be sized in accordance with the latest edition of ANSI Standard Z223 1 National Fuel Gas Code in Canada according to CGA B149 See Tables 1 3 and 4 for correct gas supply piping size If gas pressure is excessive on natural gas applications install a pressure regulating valve in the line upstream from the main shutoff valve 3 Adequately support the piping to prevent strain on the gas manifold and controls 4 To prevent the mixing of moisture with gas run the take off piping from the top or side of the main 5 Optional two stage units
8. Each unit heater MUST have it s own vent system It MUST NOT be connected to other vent systems or to a chimney Use single wall pipe constructed of 24 GA galvanized steel ora material of equivalent durability and corrosion 5 resistance for the vent system For installations in Canada use pipe constructed from 025 inch thick aluminum or 018 inch thick stainless steel A WARNING Never use pipe of a diameter other than that specified in Table 1 Never use PVC ABS or any other non metallic pipe for venting To do so may result in serious damage to the unit and or severe personal injury or death Any run of single wall vent pipe passing through an unheated space must be insulated with an insulation suitable to 550 F INSTALLATION 6 The vent system must be installed to prevent col lection of condensate Pitch horizontal pipes down ward 1 4 inch per foot 21mm m toward the vent cap to facilitate drainage Vertical vent pipes should be piped as depicted in Figures 9A amp 9B 7 The equivalent length of the vent system must not be less than 5 feet 1 5m and must not exceed 50 feet 15 2m Equivalent length equals the total length of straight pipe plus 15 feet 4 6m for each 90 elbow and 5 feet 1 5m for each 45 elbow 8 Each slip joint must be secured with at least three corrosion resistant screws Two full turns of 3m 425 Aluminum Foil tape or its equivalent must then be used to seal each joint Gen
9. kw _ o Are all panels doors vent caps in place o Has the unit suffered any external damage Damage 1 Does the gas piping and electric wiring appear to be installed in a professional manner Has the gas electric been inspected by the local authority having jurisdiction Is the gas supply properly sized for the equipment Were the installation instructions followed when the equipment was installed Have all field installed controls been installed Do you understand all the controls this equipment If contact your wholesaler DO NOT START this equipment unless you fully understand the controls GENERAL GAS HEATING With power and gas off With power and gas on Make certain all packing has been removed L1 Inlet gas pressure in W C or kPa 1 Tighten all electrical terminals and connections 1 Pilot amp main burner ignition Check damper linkages for tightness L1 Manifold gas pressure in W C or kPa Check all fans amp blowers for free movement L1 Cycle on HIGH LIMIT 1 Check all controls for proper settings Cycle firestat and or freezestat Check set screws blowers and bearings 1 Check electronic modulation Set at 1 Check belt tightness L1 Check mechanical modulation Set at L1 Cycle and check all other controls not listed BLOWER With power and gas off 1 Check operation of remote panel 1 Check voltage L1 L2 L3 Entering air temp
10. 1 Check rotation of main blower 1 Discharge air temp high fire F or 1 Check motor amps L1 L2 L3 1 External static pressure in W C 71 Blower RPM 1 Cycle by thermostat or operating control 1 Check air filters Record quantity amp size Remarks 28
11. 1 National Fuel Gas Code In Canada installation must be in accordance with CGA B149 1 Installation Code for Natural Gas Burning Appliances and Equipment and CGA B149 2 Installation Code for Propane Burning Appliances and Equipment A Breidert Type L or Fields inlet cap furnished by the customer must be installed at the termination point of the combustion air system Figures 9A 9B 10A amp 10B NOTICE Thetop ofthe inlet cap is to be noless than 12 inches 305mm from the top of the vent cap See Figures 9 amp 10 3 5 6 Each unit heater MUST have it s own combustion air system It MUST NOT be connected to other air intake systems Use single wall pipe constructed of 24 GA galvanized steel or a material of equivalent durability and corrosion resistance for the combustion air system A WARNING Never use pipe of a diameter other than that specified in Table 1 Never use PVC ABS or any other non metallic pipe for venting To do so may result in serious damage to the unit and or severe personal injury or death Longruns of single wall combustion air piping passing through an unheated space may require insulating if condensation becomes noticeable The combustion air system must be installed to prevent collection of condensate Pitch horizontal pipes downward 1 4 inch per foot 21mm m toward the inlet cap to facilitate drainage Vertical combustion air pipes should be piped as depicted in Figure 9A
12. 4 Bearings are dry 4 Oil bearings on fan motor Refer to label on motor N Pilot will not light or will not 1 Main gas off 1 Open all manual gas valves stay lit 2 Pilot adjustment screw turned too low 2 Increase size of pilot flame Refer to on combination automatic main gas Operation valve 3 Air in gas line 3 Purge air from gas supply 4 Incorrect lighting procedure 4 Follow lighting instruction label adjacent to gas valve 5 Dirt in pilot orifice 5 Remove pilot orifice Clean with compressed air or solvent Do not ream 6 Extremely high or low gas pressure 6 Referto Operation 7 Drafts around unit 7 Eliminate drafts Refer to Installation 8 Pilot valve not opening faulty wiring 8 Inspect and correct all wiring 9 No spark faulty wiring 9 Inspect and correct ignition system wiring See symptoms W X amp Y 10 Defective gas valve 10 Replace 22 Troubleshooting Guide SYMPTOMS POSSIBLE CAUSE S CORRECTIVE ACTION O Fan will not run Loose wiring Check and tighten all wiring connections per diagrams Thermostat wires tagged W and must be connected together unless special thermostats are used if so see thermostat wiring diagram See electrical connections 2 Defective motor overload protector or 2 Replace motor defective motor 3 Defective fan switch 3 Checkfor 24V across 1 and 3terminals on fan
13. S BSCII 5 J30 05372 INSTALLATION INSTRUCTIONS amp PARTS LIST SEPARATED COMBUSTION GAS FIRED BLOWER UNIT HEATERS ATTENTION READ THIS MANUAL AND ALL LABELS ATTACHED TO THE UNIT CAREFULLY BEFORE ATTEMPTING TO INSTALL OPERATE OR SERVICE THESE UNITS CHECK UNIT DATA PLATE FOR TYPE OF GAS AND ELECTRICAL SPECIFICATIONS AND MAKE CERTAIN THAT THESE AGREE WITH THOSE AT POINT OF INSTALLATION RECORD THE UNIT MODEL AND SERIAL No s IN THE SPACE PROVIDED RETAIN FOR FUTURE REFERENCE Model No Serial No FOR YOUR SAFETY The use and storage of gasoline or other flammable vapors and liquids in open containers in the vicinity of this appliance is hazardous FOR YOUR SAFETY If you smell gas 1 Open windows 2 Don t touch electrical switches 3 Extinguish any open flame 4 Immediately call your gas supplier AWARNING Improper installation adjustment alteration service or maintenance can cause property damage injury or death Read the installation operating and maintenance instructions thoroughly before installing or servicing this equipment APPROVED FOR USE IN CALIFORNIA A WARNING Install operate and maintain unit in accordance with manufacturer s instructions to avoid exposure to fuel substances or substances from incomplete combustion which can cause death or serious illness The state of California has determined that these substances may cause ca
14. SHAFT peeo AND 1 BEARING SET the adjustable half of the sheave clockwise counter clockwise to slow the blower Retighten the set screw 3 Realign the blower and motor sheaves if necessary 4 Adjust the belt tension as specified in the BLOWER SET UP section under step 2 5 Replace the belt guard CAUTION Never operate the unit beyond the specified limits or severe damage to and or premature failure of the unit will result EXPLANATION OF CONTROLS see Figure 11 1 Each Separated Combustion Unit Heater comes equipped with a power vent system that consists of a power venter motor and blower pressure switch and sealed flue collector A CAUTION The addition of external draft hoods or power venters is not permitted Addition of such devices may cause severe unit malfunction or failure 2 The power venter motor is energized by the room thermostat when a demand for heat is sensed The pressure switch measures the pressure differential between the air inlet and exhaust vent systems If the differential is correct the indirect spark ignition System is energized A WARNING Under no conditions is the unit to be fired if the power venter is not operable or severe personal injury or death may occur 3 The indirect spark ignition system consists of an ignition module a dual combination valve and a spark ignited pilot burner When the pressure switch is closed
15. amp 100 400 FAN UNITS AND 100 250 BLOWER UNITS 4118 REF REF NO DESCRIPTION NO DESCRIPTION 1 Blower Housing Assembly 14 Junction Box Cover 2 Speed Nut 15 Snap Bushing 3 Motor 16 Relay Motor 4 Washer Plain 17 Draftor Stack Assembly 5 Plate Adapter 18 Tubing Aluminum Formation 6 Blower Wheel 19 Male Connector 7 Mounting Bracket Pressure Switch 20 Locknut 8 Mounting Bracket Junction Box 21 Hole Plug 9 Screw S T 22 Pressure Switch Cover 10 Screw Machine L 3 4 23 Drill Screw 11 Nut Keps Ext Lock Washer 24 Junction Box Base 12 Air Pressure Switch 25 Purge Relay not shown 13 Drill Screw located in Junction Box NOTES 1 For item No 6 use counter clockwise rotation 2 DO NOT OVERTIGHTEN CELCON NUT HAND TIGHTEN ONLY DO NOT USE TOOLS Approximate 1 3 turn maximum or 8 inch pounds is sufficient from the point where the tube does not slip in or out 3 Flue Sizes 30 75 units 4 dia flue outlet Reducer required To be supplied by installer 100 175 units 4 dia flue outlet Reducer required To be supplied by installer 200 250 units 5 dia flue outlet no adapter required 300 400 units 6 dia flue outlet Increaser required To be supplied by manufacturer 25 INSTALLATION INSTRUCTIONS FOR FIELD REPLACEMENT OF POWER VENTER MOTOR A WARNING Never service any compartment without first disconnecting all electrical and gas supplies Refer to unit s wiring
16. are involved circulation of air around the perimeter is recommended where heated air flows along exposed walls Satisfactory results can also be obtained where multiple heaters are located toward the center of the area with heated air directed toward the outside walls Be careful to avoid all obstacles and obstructions which could impede the warm air distribution patterns Heat throw distances are presented in Table 2 and Figure 2A Table 2 Standard Applications Heat Throw Distances see figure 2A UNIT SIZE BTU Hr kW amp 100 000 125 000 150 000 175 000 200 000 225 000 250 000 300 000 350 000 400 000 m 29 3 36 6 43 9 51 2 58 6 65 9 73 2 87 8 102 5 117 1 8 60 65 70 75 80 85 90 105 110 120 2 4 18 3 19 8 21 3 22 9 24 4 25 9 27 4 32 0 33 5 36 6 10 54 56 60 64 68 72 78 90 95 100 3 0 16 5 17 1 18 3 19 5 20 7 21 9 23 8 27 4 29 0 30 5 12 44 46 49 57 61 65 68 80 84 90 3 7 13 4 14 0 20 7 17 4 18 6 19 8 20 7 24 4 25 6 27 4 15 NR NR 45 49 52 56 60 70 74 80 4 6 22 6 14 9 15 8 17 1 18 3 21 3 22 6 24 4 20 NR NR NR NR 46 50 54 63 66 70 6 1 14 0 15 2 16 5 19 2 20 1 21 3 NR Not recommended Distance from floor to bottom of the unit INSTALLATION continued Figure 2A Heat Throw Distances Floor Line Unit heaters should not be installed to maintain low temperatures and or freeze protection
17. damage personal injury or death A WARNING Before attempting to light or relight the pilot wait 5 minutes to allow gas which may have accumulated in the burner compartment to escape Failure to heed this warning could result in property damage personal injury or death 2 Turn on the electrical power The unit heater should now be under the control of the thermostat Set the thermostat to it s highest setting the power venter motor should start and burner ignition occur Allow the unit heater to operate until the fan starts then set the thermostat to it s lowest setting The burners and power venter motor should stop operating immediately while the fan continues to operate until the fan time delay times out shutting it off Reset the thermostat to the desired operational setting CHECKING UNIT HEATER GAS INPUT RATE A CAUTION Never overfire the unit heater as this may cause unsatisfactory operation or shorten the life of the heater Gas appliances are rated based on sea level operation with no adjustment required at elevations up to 2000 feet 610m At elevations above 2000 feet 610m input ratings should be reduced by 4 for each 1000 feet 805m above sea level Check the input rate as follows 1 Turn off all other gas appliances that utilize the same gas meter as the unit heater 2 Letthe unit heater run for 15 minutes 3 Using the gas meter clock the time that it takes to burn 1
18. diagram This replacement must be performed only by a qualified technician Figure 18 Identification of Parts REF NO DESCRIPTION Relay Junction Box Mounting Bracket Assembly 8 Drill Screws 2 required Pressure Mounting Bracket Assembly Mounting Plate Adapter Keps Nut w External Tooth Lockwasher 4 required Motor Support Shipping Bracket Phillips Head Screws 3 required Power Venter Blower Housing Blower Wheel Motor Space Washers 3 required 12 Machine Screw 3 required 13 Sensing Tube 14 Set Screw k TOOLS AND PARTS NEEDED Wire Stripper and Crimper Slotted Head and 2 Phillips Head Screwdriver 3 8 Wrench 1 8 Allen Wrench long handle marker 1 1 4 push on terminal for Wire NOTES 1 Remove the cover from the Relay Junction Box Item 1 by removing two screws Item 2 top and bottom Disconnect both wires from the motor lead ends One is connected to terminal 4 on the venter relay and the other is connected with a wire nut to a black wire Remove the sensing tube Item 3 from the Pressure Switch Mounting Bracket Item 3 at motor end only Separated Combustion Units Remove both tubes at motor end only note location Mark locations of the Relay Junction Box and Pressure Switching Mounting Brackets along with the Motor Item 10 mounts on the Mounting Adapter Plate Item 4 using a marker M NOTICE All hardware screws nuts wa
19. line for kinks Insure there are no drafts X Pilot lights Main valve does not energize Loose S8600 connections Cracked or broken sensor ceramic Check sensor spark lead for continuity Measure 24 volts from term MV to term MV PV Check connections term MV feeds main valve Replace pilot assembly Replace if needed If present replace main valve if not replace 58600 Y Hi Limit switch tripping Unit is overfiring Manifold pressure too high adjust Burner orifice may be too large verify replace if req d 2 Air flow too low 2 Increase air flow check fan size Check for proper voltage 3 Defective switch 3 Replace 1 Power venter wheel loose 1 Replace or tighten Z Noisy power venter 2 Power venter wheel dirty 2 Clean power venter wheel 3 Power venter wheel rubbing housing 3 Realign power venter wheel 4 Bearings are dry 4 Oil bearings on power venter motor Refer to label on motor AA Power venter will not run Loose wiring Defective motor overload protector or defective motor Defective power venter relay Check and tighten all wiring connec tions per diagrams Thermostat wires tagged W and G must be connected together unless special thermostats are used if so see thermostat wiring diagram See electrical connections Replace motor Check for 24V across 1 and 3 terminals on fan relay If 24V is present jumper ter
20. test the operational functions of all safety devices supplied with your unit IDENTIFICATION OF PARTS Figure 14 Combustion Chamber Figure 15 Internal Furnace Assembly GAS VALVE MANIFOLD PILOT ASSY MAIN RETAINER SPRING AIR SHUTTERS Figure 16 Separated Combustion Unit Heater 20 MANIFOLD amp MAIN BURNERS INCLUDED IN BURNER COMPARTMENT 557 PRESSURE SWITCH POWER VENT ASSY POWER VENT MOTOR BLOWER MOTOR BELT GUARD AIR INLET GAS SUPPLY INLET Table 5 Troubleshooting Guide SYMPTOMS POSSIBLE CAUSE S CORRECTIVE ACTION A Flame lifting from burner 1 Pressure regulator set too high 1 Reset manifold pressure Refer to ports Operation 2 Defective Regulator 2 Replace regulator section of combin ation gas valve or complete valve 3 Burner orifice too large 3 Check with local gas supplier for proper orifice size and replace Refer to Operation B Flame pops back 1 Excessive primary air 1 Close air shutter Refer to Operation 2 Burner orifice too small 2 Check with local gas supplier for proper orifice size and replace Refer to Operation C Noisy flame 1 Too much primary air 1 Close air shutter 2 Noisy pilot 2 Reduce pilot gas Refer to Operation 3 Irregular orifice causing whistle or 3 Replace orifice resonance 4 Excessive gas input 4 Reset manifold pressure Refer to
21. that all packing material support blocks unit respectively etc have been removed from the unit 2 Adjust the blower drive belt tension by means of ACAUTION Never operate the unit beyond the the two tension bolts on the blower motor base specified limits or severe damage to and or When proper tension has been achieved the mid premature failure of the unit will result point deflection of the belt will be 3 4 when subjected to a 5 Ib force Figure 11 Motor amp Blower Assembly 3 Recheck all electrical connections 4 When power is applied ensure that the motor and blower are rotating in a clockwise direction when viewed from the drive side 5 Measure the current draw of the motor A CAUTION The at speed current draw of the motor must never exceed that specified on the motor rating plate or severe damage to the motor will result BLOWER DRIVE ADJUSTMENT A WARNING Never attempt to adjust the drive belt without first disconnecting all electrical NOTE THE BLOWER power to the unit or severe personal injury may ASSEMBLY FOR THE 100 result 250 UNITS CONSISTS OF 1 WHEEL 1 HOUSING 1 SHAFT AND 1 BEARING 1 Remove the belt guard and loosen the belt tension SET FOR 300 400 UNITS bolts on the blower motor base THE BLOWER ASSEMBLY 2 Loosen the set screw on the adjustable half of the CONSISTS OF 2 WHEELS motor sheave To increase the blower speed turn 2 HOUSINGS 1
22. 0 MBTU HR UNIT SIZES NOTE AIR INTAKE IS ROUND ON 225 250 UNITS FOR 300 400 UNITS AIR INTAKE IS AS SHOWN 26 3 4 679 29 737 7 2 38 23 32 983 H SIDE VIEW 225 THRU 400 MBTU HR UNIT SIZES INSTALLATION AWARNING Do not install unit heaters in corrosive flammable atmospheres Premature failure of or severe damage to the unit will result AWARNING Avoid locations where extreme drafts can affect burner operation Unit heaters must not be installed in locations where air for combustion would contain chlorinated haloge nated or acidic vapors If located in such an environment premature failure of the unit will occur Since the unit is equipped with an automatic gas ignition system the unit heater must be installed such that the gas ignition control system is not directly exposed to water spray rain or dripping water NOTICE Location of unit heaters is related directly to the selection of sizes refer to Figure 2 Basic rules are as follows Figure 2 HEATER LOCATION UD a 41 c D2787 MOUNTING HEIGHT Unit Heaters must be installed at a minimum of 8 feet 2 4m above the floor measured to the bottom of the unit At heights above 8 feet 2 4m less efficient air distribution will result Occasionally unit heaters must be mounted at heights of 12 to 16 feet 3 7 to 4 9
23. 00 MBTU Unit Sizes WOOD CONSTRUCTION JOISTS JST WASHER Ya amp NU 5 _ SSS Ge iur sii 2 X 6 LAG l THREADED 7 LAG BOLTED ROD amp WASHER ACROSS ur t al UNIT HEATER 28594 See Table 1 for C dimension GAS SUPPLY A WARNING To avoid equipment damage or possible personal injury do not connect gas piping to this unit until a supply line pressure leak test has been completed Connecting the unit before completing the pressure leak test may damage the unit gas valve and result in a fire hazard Do not rely on a shut off valve to isolate the unit while conducting gas pressure leak tests These valves may not be completely shut off exposing the unit gas valve to excessive pressure and damage PIPE SIZING To provide adequate gas pressure at the gas unit heater size the gas piping as follows 1 Find the cu ft hr by using the following formula Input Cu ft hr Btu per Cu ft 2 Refer to Table 3 Match Pipe Run in Feet with appropriate Gas Input Cu Ft Hr figure This figure can then be matched to the pipe size at the end of the column Example It is determined that a 67 foot 20 4m run of gas pipe is required to connect a 200 MBTU gas unit heater to a 1 000 Btu cu ft 0 29 kW natural gas supply 200 000 Btu hr 1 000 Btu cu ft 200 Cu ft hr Using Ta
24. 2 850 3 950 4 600 4 800 cu m s 0 566 0 743 0 932 1 086 1 133 1 227 1 345 1 864 2 171 2 266 Air Temperature Rise Deg F 62 59 56 56 62 64 65 56 56 62 Deg C 34 33 31 31 34 36 36 31 31 34 Outlet Velocity 880 950 1030 1045 965 935 930 1080 1090 1000 m s 4 47 4 83 5 23 5 31 4 90 4 75 4 72 5 49 5 54 5 08 Full Load Amps at 115V 8 8 9 8 10 6 10 6 152 15 2 15 2 15 2 18 6 18 6 MOTOR DATA Motor HP 14 1 8 1 2 1 2 3 4 3 4 3 4 3 4 1 1 Motor kW 0 19 0 25 0 37 0 37 0 56 0 56 0 56 0 56 0 75 0 75 Motor Type SPH SPH SPH SPH SPH SPH SPH SPH cap start cap start R P M 1725 1725 1725 1725 1725 1725 1725 1725 1725 1725 Amps 115V 54 6 6 74 74 12 0 12 0 12 0 12 0 154 154 DIMENSIONAL DATA in mm A Height to Top of Unit 31 1 4 31 1 4 36 1 4 36 1 4 36 1 4 36 1 4 36 1 4 36 1 4 36 1 4 36 1 4 794 794 921 921 921 921 921 921 921 921 B Height to Top of Hanger 34 1 16 34 1 16 39 1 16 39 1 16 39 1 16 39 1 16 39 1 16 39 1 16 39 1 16 39 1 16 865 865 992 992 992 992 992 992 992 992 C Hanging Distance Width 14 3 4 17 1 2 17 1 2 20 1 4 23 25 3 4 28 1 2 34 39 1 2 45 375 444 444 514 584 654 724 864 1003 1143 D Discharge Opening Width 15 3 8 18 1 8 18 1 8 20 7 8 23 5 8 26 3 8 29 1 8 34 5 8 40 1 8 45 5 8 391 460 460 530 600 670 740 879 1019 1159 E Width of Unit 17 7 8 20 5 8 20 5 8 23 3 8 26 1 8 28 7 8 31 5 8 37 1 8 42 5 8 48 1 8 4
25. 51 3 NOILI3NNOI Ede 5 5 403 SNDILODMISNI Q NOLLJ3NNU2 FHA 1NIDd NDILO3NNDO ON NOLLOSNNOD 1233Id AYTAC 3WIL 8 LINN E 9 e nao eae NULLVTWISNI OL 3334 5 8 v OL 8 37949 09 3sVHd 1 4 AND 2 NOILO3NNOD IXIA TWNIWAAL 1 m SH NHIILLSQSW UOS 8 38 1 1I syg onanoo vada 3501 8 1234534 HIIA 1350 LON SI Nana ag 38 1ShW 39NVITddY 38 LSNW LINN NOLLO3NNO2 1 2 WNULLdU NY AT 5 P Ela 031 435 918 HLIM 5 SV IAIA 380438 0 38 Ad LINN NOILSNAWDI E ana 78 30 ANY 31 123 2510 NULLnv2 31Valvd3s g 10 8 599 TI3AA3NDH lt at gt WAS i JSNValL cue 19151200 1 IVISOWa3HL 5 Seam
26. 54 524 524 594 664 733 803 943 1083 1222 F to Centerline of Flue 5 7 8 7 14 7 1 4 8 5 8 10 11 1 4 12 3 4 15 1 2 18 1 4 21 149 184 184 219 254 286 324 394 464 533 0 Hanging Distance Depth 18 1 2 18 1 2 18 1 2 20 20 23 23 23 23 23 470 470 470 508 508 584 584 584 584 584 H Depth to Rear of Housing 42 3 4 44 3 8 44 3 8 47 316 47 3 16 50 7 8 48 50 7 8 50 7 8 51 1086 1127 1127 1199 1199 1292 1219 1292 1292 1295 Flue Size Dia in 4 4 4 4 5 5 5 6 6 6 Dia mm 102 102 102 102 127 127 127 152 152 152 Air Inlet Size in 4 4 4 4 5 5 5 6 6 6 mm 102 102 102 102 127 127 127 152 152 152 Blower Size in 9 10 10 12 12 12 12 2 10 2 12 2 12 Gas Inlet Natural Gas in 1 2 1 2 1 2 1 2 1 2 3 4 3 4 3 4 3 4 3 4 Gas Inlet LP Gas in 1 2 1 2 1 2 1 2 1 2 1 2 or 3 4 Approx Shipping Wt Ib 298 330 362 394 426 458 490 558 618 678 kg 135 150 164 179 193 208 222 253 280 308 i Ratings shown are for unit installations at elevations between 0 and 2000 ft 610m For unit installations in USA above 2000 ft 610m the unit input must be derated 4 6 for each 1000 ft 305m above sea level refer to local codes or in absence of local codes refer to the latest edition of the National Gas Code ANSI Standard Z223 1 N F P A No 54 For installations in Canada any references to deration at altitudes in excess of 2000 ft 610m are to be ignored At altitudes of 2000 t
27. 90 9 ORIFICE DRILL 41 54 m 233 100 A PILOT ADJUSTMENT ORIFICE DRILL 41 54 1 Remove the pilot adjustment cap FETSHR 280 120 2 Adjust the pilot screw to provide a properly sized 300 ORIFICE DRILL 41 54 12 fl P P propery FT HR 326 140 T ame ORIFICE DRILL 41 54 3 A proper pilot flame is a soft steady flame that 400 FT HR 97a 160 16 envelops 3 8 to 1 2 inch 9 5 to 12 7mm of the ORIFICE DRILL 41 54 flame sensor 4 Replace the pilot adjustment cap MANIFOLD PRESSURE ADJUSTMENT If the manifold pressure requires minor adjustment remove the cap from the pressure regulator and turn the adjustment screw clockwise to increase the pressure or counterclockwise to decrease the pressure The adjusted manifold pressure should not vary more than 1096 from the pressures specified in Table 5 18 PERIODIC SERVICE NOTICE The heater and vent system should be checked once a year by a qualified technician All Maintenance Service information should be recorded accordingly on the Inspection Sheet provided in this manual A WARNING Open all disconnect switches and disconnect all electrical and gas supplies and secure in that position before servicing unit Failure to do so may result in personal injury or death from electrical shock A WARNING Gas tightness of the safety shut off valves must be checked on at least an annual basis To check gas tightness of the
28. 97 82 73 66 61 57 53 50 44 40 37 35 4 96 3 40 2 75 2 32 2 07 1 87 1 73 1 61 1 50 1 42 1 25 1 13 1 05 0 99 3 4 0 824 360 250 200 170 151 138 125 118 110 103 93 84 77 72 10 2 7 08 5 66 4 81 4 28 3 91 3 54 3 34 3 11 2 92 2 63 2 38 2 18 2 04 1 1 049 680 465 375 320 285 260 240 220 205 195 175 160 145 135 19 3 13 2 10 6 9 06 8 07 7 36 6 80 6 23 5 80 5 52 4 96 4 53 4 11 3 82 11 4 1 380 1400 950 770 660 580 530 490 460 430 400 360 325 300 280 39 6 26 9 21 8 18 7 16 4 15 0 13 9 13 0 12 2 11 3 10 2 9 20 8 50 7 93 11 2 1 610 2100 1460 1180 990 900 810 750 690 650 620 550 500 460 430 59 5 41 3 33 4 28 0 25 5 22 9 21 2 19 5 18 4 17 6 15 6 14 2 13 0 12 2 2 2 067 3950 2750 2200 1900 1680 1520 1400 1300 1220 1150 1020 950 850 800 112 77 9 62 3 53 8 47 6 43 0 39 6 36 8 34 5 32 6 28 9 26 9 24 1 22 7 21 2 2 469 6300 4350 3520 3000 2650 2400 2250 2050 1950 1850 1650 1500 1370 1280 178 123 99 7 85 0 75 0 68 0 63 7 58 0 55 2 52 4 46 7 42 5 38 8 36 2 3 3 068 11000 7700 6250 5300 4750 4300 3900 3700 3450 3250 2950 2650 2450 2280 311 218 177 150 135 122 110 105 97 7 92 0 83 5 75 0 69 4 64 6 4 4 026 23000 15800 12800 10900 9700 8800 8100 7500 7200 6700 6000 5500 5000 4600 651 447 362 309 275 249 229 212 204 190 170 156 142
29. AL SAFETY INFORMATION Failure to comply with the general safety information may result in extensive property damage severe personal injury or death A WARNING This product must be installed by a licensed plumber or gas fitter when installed within the Commonwealth of Massachusetts Installation must be made in accordance with local codes or in absence of local codes with the latest edition of ANSI Standard Z223 1 N F P A No 54 National Fuel Gas Code All of the ANSI and NFPA Standards referred to in these installation instructions are those that were applicable at the time the design of this appliance was certified The ANSI Standards are available from the American National Standards Institute 11 West 42nd Street New York NY 10036 or www ansi org NFPA Standards are available from the National Fire Protection Association Batterymarch Park Quincy MA 02269 These unit heaters are designed for use in airplane hangars when installed in accordance with ANSI NFPA No 409 and in public garages when installed in accordance with NFPA No 88A and NFPA No 88B If installed in Canada the installation must conform with local building codes or in absence of local building codes with CGA B149 1 Installation Codes for Natural Gas Burning Appliances and Equipment or CGA B149 2 Installation Codes for Propane Gas Burning Appliances and Equipment These Unit Heaters have been
30. CALLY VENTED exhaust system must extend at least 3 feet 1m above the roof surface that it passes through The point of termination for a HORIZONTALLY VENTED exhaust System must be at least 12 inches 305mm from the exterior of the wall that it passes through In addition the termination point must be at least 3 feet 1m above grade or above the snow line more than 6 feet 2m from the combustion air inlet of another appliance more than 3 feet 1m from any building opening and more than 4 feet 1 3m from and not directly above any gas meter or service regulator refer to Figures 10A amp 10B Size according to expected snow depth If excessive condensotion develops a drip leg with a condensate drain may be required Insulating the pipes may eliminate the problem Figure 9B Vertical Vent Installation o aPPROVED TERMINAL SEE INSTRUCTIONS VERTICAL PIPE EXTENSION OVER 12 IN MUST BE INSULATED METAL FACE PLATE IF CONDENSATION BECOMES A PROBLEM FIBERGLASS EQUIVALENT METAL INSULATIDN MIN 2 IN SLEAVE 8 IN MIN m 2 IN MIN VENT PIPE DIAMETER D CSEE TABLE 1 Figure 10A Horizontal Intake Vent Locations BUILDING OVERHANG c PITCH PIPES DOWN TOWARDS TERMINAL 12 IN CAPS 1 4 IN PER FOOT OF RUN TD AL LOW FOR COND
31. ENSATE NOTED IN COM EXHAUST BUSTION AIR PI DRAINAGE ADJACENT PING SECTION TEN N 24 BUILDING MIN e APPROVED TERMINALS COMBUSTION AIR MINIMUM DISTANCE FROM INTAKE TO GRADE OR BUILDING PROJECTION IS 3 FT nr Figure 10B Horizontal Vent Installation APPROVED TERMINA CSEE INSTRUCTIONS 2 IN MIN VENT PIPE DIAME ETER SEE TABLE D 7 E 2 IN MIN METAL FACE PLATE FIBERGLASS EQUIVALENT INSULATION MIN 2 IN THICK NOTE DO NOT TERMINATE HORIZONTAL VENT WHERE CONDENSATE COULD CREATE A NUISANCE OR HAZARD OR COULD CAUSE BUILDING OR EQUIPMENT DAMAGE 14 INSTALLATION continued BLOWER SET UP A WARNING Never operate the unit without The drive ratio of the motor and blower sheaves has the belt guard in place or severe personal injury been preset at the factory for a temperature rise of may result 65 F at 0 W C If the unit is to be operated under different air flow or pressure requirements the drive 6 Check that the air flow of the unit the rpm and ratio must be altered by means of the adjustable sheave current draw of the blower motor and the temperature on the blower motor Figure 11 rise are within the limits specified in Table 1 the blower motor rating plate and the rating plate on the 1 Ensure
32. ING Do not attempt to convert the heater for use with a fuel other than the one intended Such conversion is dangerous as it will create the risks listed previously Make certain that the power source conforms to the electrical requirements of the heater A WARNING Do not depend upon a thermostat or other switch as sole means of disconnecting power when installing or servicing heater Always disconnect power at main circuit breaker as described above Failure to do so could result in fatal electric shock Special attention must be given to any grounding information pertaining to this heater To prevent the risk of electrocution the heater must be securely and adequately grounded This should be accomplished by connecting a grounded conductor between the service panel and the heater To ensure a proper ground the grounding means must be tested by a qualified electrician Do not insert fingers or foreign objects into the heater or its air moving device Do not block or tamper with the heater in any manner while in operation or just after it has been turned off as some parts may be hot enough to cause injury This heater is intended for general heating applications ONLY It must NOT be used in potentially dangerous locations such as flammable explosive chemical laden or wet atmospheres In cases in which property damage may result from malfunction of the heater a backup system or a temperature sensitive alarm sh
33. acturer s instructions Recommended Heat Anticipator Setting Ranges 25 ft 7 6m 50 ft 15 2m Gas Ignition Type T stat Wiring T stat Wiring For Power Vented Units 0 85 to 0 90 0 90 to 1 1A Intermittent Spark Max Setting on T stat FAN TIME DELAY CONTROL Leads from time delay controls are factory wired to the junction box The fan control is a time delay relay approximately 45 seconds ON 65 seconds OFF The fan control is rated at 17 amps NOTICE The start up fan delay must not exceed 90 seconds from a cold start NOTICE For all wiring connections refer to the wiring diagram that your unit is equipped with either affixed to the side jacket or enclosed in your unit s installation instruction envelope Should any original wire supplied with the heater have to be replaced it must be replaced with wiring material having a temperature rating of at least 105 C Should any high limit switch wires have to be replaced they must be replaced with wiring material having a temperature rating of 200 C minimum Figure 7 26213 10H W03
34. ances 5 6 Suspension of Units 5 6 Gas Supply 7 8 Pipe Installation cuti etd reete 8 ELECTRICAL CONNECTIONS 9 10 11 INSTALLATION VENTING Combustion Air Venting amp Piping 12 13 14 Exhaust Venting 12 13 14 Blower Set UD air eet 15 OPERATION toten 16 17 18 Adjustimerits 16 18 Servicing amp 19 IDENTIFICATION OF PARTS 4 17 20 25 26 TROUBLESHOOTING GUIDE 21 22 23 24 Replacement 27 WARRANTY 25x iere 27 INSPECTION SHEED 9 28 NOTICE It is the equipment owner s responsibility to provide any scaffolding or other apparatus required to perform emergency service or annual periodic maintenance to this equipment DESCRIPTION The Separated Combustion Gas Blower Unit Heater is a factory assembled power vented high static pressure type centrifugal blower unit designed for heavy duty applications such as continuous operation or where a single unit heater must do the entire heating job in a large area Blower type unit h
35. are supplied with a combination valve which includes a Manual valve b Manual valve c Solenoid valve d Pilot safety e Pressure regulator Pipe directly in to combination valve see Figure 5 6 A 1 8 in N P T plugged tapping accessible for test gauge connection must be installed immediately upstream of the gas supply connection to the appliance 7 Provide a drip leg in the gas piping near the gas unit heater ground joint union and a manual gas shutoff valve should be installed ahead of the unit heater controls to permit servicing The manual main shutoff valve must be located external to the jacket See Figure 5 8 Make certain that all connections have been adequately doped and tightened A CAUTION Do not overtighten the inlet gas piping into the valve This may cause stresses that would crack the valve NOTICE Use pipe joint sealant resistant to the action of liquefied petroleum gases regardless of gas conducted A WARNING Check all pipe joints for leakage using a soap solution or other approved method Never use an open flame or severe personal injury or death may occur Figure 5 Pipe Installation Standard Controls monuol shut off volve with 1 8 In NP T plugged topping accessible for test gage con nection must installed immediately upstream of the gas supply connection to the appliance When installed within the Commonwealth of Massachu
36. at 1 Thermostat malfunction 1 Replace thermostat 2 Heater runs continuously 2 Check wiring per diagrams Check operation at valve Look for short such as staples piercing thermostat wiring and correct Replace gas valve Refer to Operation T Cold air is delivered on start 1 Fan switch heater element improperly 1 Be sure fan switch heater terminals up wired are connected per diagrams U Cold air is delivered during 1 Incorrect manifold pressure or input 1 Refer to Operation heater operation 2 Voltage to unit too high 2 Check motor voltage with fan running Should be 115 volts AC 3 Air through put too high 3 Refer to Operation V NO Spark 1 Thermostat not calling for heat 1 Close thermostat contacts 2 No low voltage 2 Check for 24V across 24V terminals of S8600 3 Spark gap closed or too wide 3 Set gap to 0 1 4 Broken or cracked ceramic on spark 4 Replace pilot assembly electrode 23 Troubleshooting Guide SYMPTOMS POSSIBLE CAUSE S CORRECTIVE ACTION W Spark present but pilot does not light Loose S8600 connections Improper gas pressure Is spark in pilot gas stream No pilot gas do not use match to test presence of gas is easily detected by the odor Check all connections term PV feeds 24V to pilot valve Check pressure pressure that is either too high or too low may cause a problem Spark should arc from electrode Check pilot
37. ble 3 a 1 inch pipe is needed NOTICE See General Safety Information section for English SI metric unit conversion factors NOTICE If more than one gas unit heater is to be served by the same piping arrangement the total cubic feet per hour input and length of pipe must be considered NOTICE If the gas unit heater is to be fired with LP gas consult the local LP gas dealer for pipe size information HEATER INSTALLATION FOR USE WITH PROPANE BOTTLED GAS MUST BE MADE BY A QUALIFIED L P GAS DEALER OR INSTALLER HE WILL INSURE THAT PROPER JOINT COMPOUNDS ARE USED FOR MAKING PIPE CONNECTIONS THAT AIR IS PURGED FROM LINES THAT A THOROUGH TEST IS MADE FOR LEAKS BEFORE OPERATING HEATER AND THAT IT IS PROPERLY CONNECTED TO PROPANE GAS SUPPLY SYSTEM Before any connection is made to an existing line supplying other gas appliances contact the local gas company to make certain that the existing line is of adequate size to handle the combined load Table 3 Gas Pipe Size Maximum Capacity of Pipe in Cubic Feet of Gas per Hour Cubic Meters per Hour for Gas Pressures of 0 5 psig 3 5 kPa or Less and a Pressure Drop of 0 5 Inch Water Column 124 4 Pa Based on a 0 60 Specific Gravity Gas Nominal Iron Internal Length of Pipe Feet meters Pipe Size Dia 10 20 30 40 50 60 70 80 90 100 125 150 175 200 in in 3 0 6 1 91 12 2 15 2 18 3 21 3 24 4 27 4 30 5 38 1 45 7 53 3 61 0 1 2 0 622 175 120
38. cubic foot of gas 4 Insert the time in seconds into the formula below 3 RATE HEATING VALUE BTU FT 3600S HR Time s ft EXAMPLE If heating value 1000 BTU R time ft 18 s ft RATE in 1000 BTU f 3600 s hr 18 s f RATE in 200 000 BTU hr Refer to General Safety Information section for metric conversions Figure 12 Burner Components Unit Controls Intermittent Pilot Ignition BURNER DRAWER COMMON PARTS 1 CONTROLS REFER UNIT WIRING DIAGRAM 8A 8B 9 10 11 12 18 MAIN BURNERS BURNER MANIFOLD AIR SHUTTERS BURNER SPRINGS MAIN BURNER ORIFICE TRANSFORMER PILOT TUBING MAIN GAS VALVE HONEYWELL MAIN GAS VALVE WHITE RODGERS AN HONEYWELL IGNITOR 1 HONEYWELL PILOT BURNER HONEYWELL PILOT ORIFICE HONEYWELL ELECTRODE SENSOR LEAD HI LIMIT LOCATED ON REAR HEADER PLATE OF HEAT EXCHANGER 17 Table 5 Main Burner Orifice Schedule NOTICE There may be momentary and spasmodic This schedule is for units operating at normal altitudes of 2000 ft 610m or less SPECIAL ORIFICES ARE REQUIRED FOR INSTALLATIONS ABOVE 2 000 FT 610M When installed in Canada any references to deration at altitudes in excess of 2000 feet 610m are to be ignored At altitudes
39. designed and certified to comply with CGA 2 6 Also see sections on installation in AIRCRAFT HANGARS and PUBLIC GARAGES A WARNING Do not alter the unit heater in any way or damage to the unit and or severe personal injury or death may occur A WARNING Disconnect all power and gas supplies before installing or servicing the heater If the power disconnect is out of sight lock it in the open position and tag itto prevent unexpected application of power Failure to do so could result in fatal electric shock or severe personal injury A CAUTION Insure that all power sources conform to the requirements of the unit heater or damage to the unit will result Follow installation instructions CAREFULLY to avoid creating unsafe conditions All wiring should be done and checked by a qualified electrician using copper wire only All external wiring must conform to applicable local codes and to the National Electrical Code ANSI NFPA No 70 1996 or the latest edition of All gas connections should be made and leak tested by a suitably qualified individual per instructions in this manual Also follow procedures listed on the Gas Equipment Start Up Sheet located in this manual Use only the fuel for which the heater is designed see rating plate Using LP gas in a heater that requires natural gas or vice versa will create the risk of gas leaks carbon monoxide poisoning and explosion AWARN
40. eaters may be used with the standard adjustable louvers or with short duct runs and discharge nozzles for spot heating Blower type unit heaters may be used where low sound levels are required The designs are certified by AGA CGA as providing a minimum of 80 thermal efficiency and approved for use in California Do not alter these units in any way If have any questions after reading this manual contact the manufacturer Figure 1 Power Vented Separated Combustion Blower Unit Heaters View See Identification of Parts Section for unit components Rear View The following terms are used throughout this manual in addition to AGA CGA requirements to bring attention to the presence of potential hazards or to important information concerning the product PY 11148 Indicates an imminently hazardous situation which if not avoided will result in death serious injury or substantial property damage A WARNING Indicates an imminently hazard ous situation which if not avoided could result in death serious injury or substantial property damage A CAUTION Indicates an imminently hazard ous situation which if not avoided may result in minor injury or property damage NOTICE Used to notify of special instructions on installation operation or maintenance which are important to equipment but not related to personal injury hazards GENER
41. eral Electric RTV 108 Dow Corning RTV 732 or an equivalent may be used instead of the tape 9 For horizontal vent systems longer than 5 feet 1 5m the system must be supported from over head building structures at 3 foot 1m intervals 10 The exhaust vent system must remain at a minimum distance of 6 inches 152mm from all combustible materials Any part of the vent system that passes through a combustible material must be properly insulated NOTICE Increasing the clearance distances may be necessary if there is a possibility of distortion or discoloration of adjacent materials Figure 9A Vertical Intake Vent Installation APPROVED 6 FT MIN TO WALL TERMINAL R ADJOINING BUILDING EXHAUST COMBUSTION VENT AIR INLET ROOF FLASHING a E w 4008 5 5 LH 9 DRIP LEG AND e CLEANDUT CAP 18 VENTING continued For a VERTICAL vent pipe section that passes through a floor or roof an opening 4 inches 102mm greater in diameter is required The opening must be insulated and flashed in accordance with applicable installation codes A HORIZONTAL section of an exhaust vent system that passes through a combustible wall must be constructed and insulated as shown in Figures 10A amp 10B 11 The top of a VERTI
42. ic power The motor nameplate and electrical rating on the transformer should be checked before energizing the unit heater electrical system All external wiring must conform to the latest edition of ANSI NFPA No 70 National Electrical Code and applicable local codes in Canada to the Canadian Electrical Code Part 1 CSA Standard C22 1 A CAUTION Do not use any tools i e screwdriver pliers etc across the terminals to check for power Use a voltmeter A CAUTION USE COPPER CONDUCTORS ONLY UNIT TERMINALS ARE NOT DESIGNED TO ACCEPT OTHER TYPES OF CONDUCTORS Failure to do so may cause damage to the equipment It is recommended that the electrical power supply to each unit heater be provided by a separate fused and permanently live electrical circuit A disconnect switch of suitable electrical rating for each unit heater should be located as close to the gas valve and controls as possible Each unit heater must be electrically grounded in accordance with the latest edition of the National Electric Code ANSI NFPA No 70 or CSA Standard C22 1 Sample wiring connections are depicted in Figures 6 7 amp 8 The transformer supplied with this unit heater is internally fused Any overload or short circuit will ruin the transformer THERMOSTAT WIRING AND LOCATION NOTICE The thermostat must be mounted on a vertical vibration free surface free from air currents and in accordance with the furnished instructio
43. m in order to clear obstacles When this is the case itis advisable to use centrifugal blower unit heaters AIRCRAFT HANGARS Unit Heaters must be installed in aircraft hangars and public garages as follows In aircraft hangars unit heaters must be at least 10 feet 3 0m above the upper surface of wings or engine enclosures of the highest aircraft to be stored in the hangar and 8 feet 2 4m above the floor in shops offices and other sections of the hangar where aircraft are not stored or housed Refer to current ANSI NFPA No 409 Aircraft Hangars In Canada installation is suitable in aircraft hangars when acceptable to the enforcing authorities PUBLIC GARAGES In repair garages unit heaters must be located at least 8 feet 2 4m above the floor Refer to the latest edition of NFPA 88B Repair Garages In parking structures unit heaters must be installed so that the burner flames are located a minimum of 18 in 457mm above the floor or protected by a partition not less than 18 in 457mm high However any unit heater mounted in a parking structure less than 8 ft 2 4m above the floor must be equipped with an OSHA approved fan guard Refer to the latest edition of NFPA 88A Parking structures In Canada installation must be in accordance to the latest edition CGA B149 Installation Codes for Gas Burning Appliances and Equipment AIR DISTRIBUTION Direct air towards areas of maximum heat loss When multiple heaters
44. minals numbered 2 and 4 If motor runs the relay is defective and must be replaced If 24V is not present check wiring per diagrams BB Power venter motor turns on and off while burner is operating m Fan relay heater element improperly wired Defective venter relay switch Motor overload protector cycling on and off Motor not properly oiled Be sure venter relay heater terminals are connected per diagrams Replace venter relay Check motor amps against motor name plate rating check voltage replace power venter motor if defective Refer to label on motor CC Power Venter motor will not stop Improperly wired venter relay Main burners not lighting while thermostat calls for heat Defective venter relay Check all wiring Refer to H amp N symptoms Replace venter relay 24 Figure 17 Power Venter Assembly REDUCER TO SUIT IF REQ SEE NOTE 3 v N ALT HORIZONTAL LEFT VENT POSITION 540 THIS END STANDARD VERTICAL VENT POSITION USE THIS ASSY F R ALTERNATE HORIZ RIGHT VENT POSITION ON POWER VENTED 150 250 BLOWER UNITS AND 300 400 FAN UNITS USE THIS ASSY FOR STANDARD HORIZ RIGHT VENT POSITION ON POWER VENTED 300 400 BLOWER UNITS RIGHT VENT POSITION POWER USE THIS ASSEMBLY FOR STD VERTICAL VENT AND ALT a HORIZONTAL LEFT VENT POSITIONS FOR POWER VENTED 30 75
45. ncer birth defects or other reproductive harm INSTALLER S RESPONSIBILITY Installer Please Note This equipment has been test fired and inspected It has been shipped free from defects from our factory However during shipment and installation problems such as loose wires leaks or loose fasteners may occur It is the installer s responsibility to inspect and correct any problems that may be found RECEIVING INSTRUCTIONS Inspect shipment immediately when received to determine if any damage has occurred to the unit during 12 05 shipment After the unit has been uncrated check for any visible damage to the unit If any damage is found the consignee should sign the bill of lading indicating such damage and immediately file claim for damage with the transportation company HVAC PRODUCTS 260 NORTH ELM ST WESTFIELD MA 01085 TEL 413 564 5540 FAX 413 562 5311 amp www sterlinghvac com wy A MESTEK COMPANY MODELS QVSB 100 125 150 175 200 225 250 300 350 400 TABLE 5 SPECIFICATIONS Basic Description ente Ride ted et nns 2 Performance amp Specification Data 4 GENERAL SAFETY INFORMATION Installation Codes throughout manual 2 3 Special Precautions 2 3 INSTALLATION locating UNIS 5 6 Proper Clear
46. ns Mount the thermostat approximately 5 feet 1 5 m above the floor in an area where it will be exposed to a free circulation of average temperature air Always refer to the thermostat instructions as well as our unit wiring diagram and wire accordingly Avoid mounting the thermostat in the following locations 1 Cold areas Outside walls or areas where drafts may affect the operation of the control 2 Hotareas Areas where the sun s rays radiation or warm air currents may affect control operation 3 Dead areas Areas where air cannot circulate freely such as behind doors or in corners Thermostat wires tagged W and must be connected together except when using a general purpose SPDT 24VAC relay and a standard thermostat with subbase or when using Honeywell T834H 1009 or T834H 1017 thermostats Also refer to Figure 6 for other wiring connections Figure 6 C1267G LOW VOLTAGE THERMOSTAT TO UNIT R HEATER 4 L BLACK 1 gt BLUE gt OR RED FOR LOW VOLTAGE THERMOSTAT WIRING WITHOUT SUMMER FAN SWITCH OPERATION THERMOSTAT HEAT ANTICIPATOR ADJUSTMENTS The initial heat anticipator setpoint should equal the thermostat s current amperage draw when the unit is firing This setpoint should be measured for the best results Use the recommended ranges as a guide If further information is needed consult your thermostat manuf
47. o Operation 2 Main burner ports clogged near pilot 2 Clean main burner ports 3 Pressure regulator set too low 3 Reset manifold pressure Refer to Operation 4 Pilot decreases in size when main 4 Supply piping is inadequately sized burners come on Refer to Installation 5 Pilot flame too small 5 Clean pilot orifice Refer to Operation 6 Drafts around heater 6 Eliminate drafts Refer to Installation 7 Improper venting 7 Refer to Installation H Failure to ignite 1 Main gas off 1 Open all manual gas valves 2 Lack of power at unit 2 Replace fuse or turn on power supply 3 Thermostat not calling for heat 3 Turn up thermostat 4 Defective limit switch 4 Check limit switch with continuity tester If open replace limit switch 5 Improper thermostat or transformer 5 Check wiring per diagrams wiring at gas valve 6 Defective gas valve 6 Replace gas valve 21 Troubleshooting Guide SYMPTOMS POSSIBLE CAUSE S CORRECTIVE ACTION 7 Defective thermostat 7 Check thermostat and replace if defective 8 Defective transformer 8 Be sure 115 volts is supplied to the transformer primary then check for 24 volts at secondary terminal before replacing 9 Loose wiring 9 Check and tighten all wiring connec tions per diagrams 10 Defective ignition control 10 Replace if necessary Also see W X amp Y symptoms J Condensation of water vapor
48. o 4500 ft 610m to 1372m the unit must be derated to 90 of the normal altitude rating and be so marked in accordance with the C G A certification LEGEND SPH SPLIT PHASE CAP START CAPACITOR START ALTERNATE VERTICAL VENT POSITION FOR 100 400 FOR 150 400 ALTERNATE HORIZONTAL RIGHT VENT POSITION VENT POSITION MAY BE FIELD ADJUSTED TO HORIZONTAL RIGHT f G OR VERTICAL OUTLETS Figure 1A DIMENSIONS XXX STANDARD UNITS STANDARD HORIZONTAL LEFT VENT POSITION FOR 100 400 2 HANGERS WITH 9 16 X 1 1 8 SLOTTED MOUNTING HOLES D36338 N H F 14 X 29 N Na ZH CST Ny ADJUSTABLE ua I HORIZONTAL LOUVERS 18 BA 457 DISCHARGE OPENING H DISCHARGE p OPENING E e FRONT VIEW 100 THRU 400 MBTU HR UNIT SIZES DIMENSIONS IN PARENTHESIS XXX MILLIMETERS 2 HANGERS WITH 99 14 57 3 8 7o od 18 3 4 Go 476 1 16 MOUNTING HOLES F DIA FLUE SIZE REQUIRED AN INCREASER IS SUPPLIED BY THE MFR FOR 300 350 400 UNIT SIZES THE REDUCER TO BE SUPPLIED BY THE INSTALLER IF ONE IS REQUIRED bas eho 7 18 3 4 G 476 f gt gt H 26 3 4 679 29 737 IS 38 23 32 983 H SIDE VIEW 100 THRU 20
49. o the original owner at original installation site that the above model Gas Fired Heater the Product will be free from defects in material or workmanship for one 1 year from the date of shipment from the factory one and one half 17 2 years from the date of manufacture whichever occurs first If upon examination by the Manufacturer the Product is shown to have a defect in material or workmanship during the warranty period the Manufacturer will repair or replace at its option that part of the Product which is shown to be defective 2 This limited warranty does not apply a if the Product has been subjected to misuse or neglect has been accidentally or intentionally damaged has not been installed maintained or operated in accordance with the furnished written instructions or has been altered or modified in any way by any unauthorized person b to any expenses including labor or material incurred during removal or reinstallation of the Product c to any damage due to corrosion by chemicals including halogenated hydrocarbons precipitated in the air d to any workmanship of the installer of the Product 3 This limited warranty is conditional upon a advising the installing contractor who will in turn notify the distributor or manufacturer b shipment to the Manufacturer of that part of the Product thought to be defective Goods can only be returned with prior written approval of the Manufacturer returns mu
50. of 2000 to 4500 feet 610 to 1372m the unit heaters must be orificed to 90 of the normal altitude rating and be so marked in accordance with the CSA certification PRIMARY AIR SHUTTER ADJUSTMENT After the unit has been operating for at least 15 minutes adjust the primary air flow to the burners Turn the friction locked manually rotated air shutters clockwise to close or counterclockwise to open see Figures 12 14 and 16 For correct air adjustment close the air shutter until yellow tips in the flame appear Then open the air shutter to the point just beyond the position where yellow tipping disappears Refer to Figure 13 TYPE OF GAS MATUBAL PROPANE orange flashes in the flame This is caused by the 1075 Br F 2500 burning of airborne dust particles and not to be EATING VALUE 40 4 maim 93 1 confused with the yellow tipping which is a stable IN NO OF i i is i ici Pun MANIFOLD SPNG m 4 id laser situation when there is insufficient 0 9 2 5 100 96 40 4 ORIFICE DRILL 41 54 Figure 13 Main Burner Flames 125 120 50 5 ORIFICE DRILL 41 54 i 5 HR 140 60 150 ORIFICE DRILL 41 54 8 AU bA 175 bs da 7 gt LA ORIFICE DRILL 41 54 wv J N 49 7 200 FT HR 186 80 8 NORMAL LIFTING YELLOW TIPPING YELLOW FLAME ORIFICE DRILL 41 54 HARD FLAME TOO MUCH AIR MARGINAL TOO LITTLE AIR 225 9 HR 210
51. of buildings A minimum of 50 F 10 C thermostat setting must be maintained If unit heaters are operated to maintain lower than 50 F 10 hot flue gases are cooled inside the heat exchanger to a point where water vapor a flue gas by product condenses onto the heat exchanger walls The result is a mildly corrosive acid that prematurely corrodes the aluminized heat exchanger and can actually drip water down from the unit heater onto floor surface Additional unit heaters should be installed if a minimum 50 F 10 C thermostat setting cannot be maintained NOTICE Unit heater sizing should be based on heat loss calculations where the unit heater output equals or exceeds heat loss Heater output is approximately 80 of input BTU HR rating CLEARANCES Each Gas Unit Heater shall be located with respect to building construction and other equipment so as to permit access to the Unit Heater Clearance between walls and the vertical sides of the Unit Heater shall be no less than 18 inches 457mm A minimum clearance of 6 inches 152mm must be maintained between the top of the Unit Heater and the ceiling The bottom of the Unit Heater must be no less than 24 inches 610mm from any combustible The distance between the flue collector and any combustible must be no less than 6 inches 152mm Also see COMBUSTION AIR and EXHAUST VENTING sections NOTICE Increasing the clearance distances may be necessary if there is a possibility of dis
52. ould be used CAUTION The open end of piping systems being purged shall not discharge into areas where there are sources of ignition or into confined spaces UNLESS precautions are taken as follows 1 By ventilation of the space 2 control of purging rate 3 elimination of all hazardous conditions All precautions must be taken to perform this operation in a safe manner Unless otherwise specified the following conversions may be used for calculating SI unit measurements 1 foot 0 305 m 1 inch water column 0 249 kPa 1 inch 25 4 mm meter second 196 8 1 0 6 894 x 0 472 1 pound 0 453kg 1000 Btu per hour 0 293 kW 1 gallon 3 785 L 1000 Btu Cu Ft 37 5 MJ m 1 cubic foot 0 028 m Table 1 Performance and Specification Data Separated Combustion Blower Unit Heater Unit Size 100 125 150 175 200 225 250 300 350 400 PERFORMANCE DATA Input BTU Hr 100 000 125 000 150 000 175 000 200 000 225 000 250 000 300 000 350 000 400 000 kW 29 3 36 6 43 9 51 2 58 6 65 9 73 2 87 8 102 5 117 1 Output BTU Hr 80 000 100 000 120 000 140 000 160 000 180 000 200 000 240 000 280 000 320 000 kW 23 4 29 3 35 1 41 0 46 9 52 7 58 6 70 3 82 0 93 7 Thermal Efficiency 80 80 80 80 80 80 80 80 80 80 Free Air Delivery CFM 1 200 1 575 1 975 2 300 2 400 2 600
53. safety shut off valves turn off the manual valve upstream of the appliance combination control Remove the 1 8 inch pipe plug on the inlet side of the combination control and connect a manometer to that tapping Turn the manual valve on to apply pressure to the combination control Note the pressure reading on the manometer then turn the valve off A loss of pressure indicates a leak If a leak is detected use a soap solution to check all threaded connections If no leak is found combination control is faulty and must be replaced before putting appliance back in service Should maintenance be required perform the following inspection and service routine 1 Inspect the area near the unit to be sure that there is no combustible material located within the minimum clearance requirements listed in this manual AWARNING Under no circumstances should combustible material be located within the clearances specified in this manual Failure to provide proper clearance could result in personal injury or equipment damage from fire 2 Turn off the manual gas valve and electrical power to the gas unit heater 3 clean or replace the main burners remove the bottom panel and compress the spring by moving the burner toward the manifold Slide the opposite end of the burner downward from the locating slot while retaining spring is still compressed Pull the burners away from the heat With the burners removed wire brush the in
54. setts handle gas cock must be used Gas Supply Line Ground Joint Union To Controls Plugged 1 8 In Test Gage Connection Drip Pocket AWARNING Never use an open flame to detect gas leaks Explosive conditions may exist which would result in property damage personal injury or death The appliance and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pres sures in excess of 1 2 psig 3 5 kPa The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1 2 psig 3 5 kPa Table 4 Gas Piping Requirements Gas Type Natural Gas Propane LP Gas Manifold 3 5 in W C 10 5 in W C Pressure 0 9 kPa 2 6 kPa 14 in W C Max 14 in W C Max Supply Inlet 3 5 kPa 3 5 kPa Pressure 5 5 W C Min 13 0 in W C Min 1 4 kPa 3 2 kPa For single stage applications only at normal altitudes ELECTRICAL CONNECTIONS A WARNING HAZARDOUS VOLTAGE disconnect ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING Failure to disconnect power before servicing can cause severe personal injury or death Standard units are shipped for use on 115 volt 60 hertz single phase electr
55. shers that will be removed from the unit will be reused for this motor replacement DO NOT LOSE ANY OF THESE PARTS 4 Remove nut Item 5 that secures the Motor Support Shipping Bracket Item 6 to the Mounting Adapter Plate Pull this bracket away from the Motor Mounting Adapter Plate Remove three phillips head screws Item 7 on the Motor mounting Adapter Plate Remove the Motor Blower Wheel Adapter Plate assembly from the Power Venter Blower Housing Item 8 Remove the Blower Wheel Item 9 from the motor shaft by removing the set screw Item 14 using a 1 8 Allen Wrench Remove the three Motor Mounting Nuts Item 5 Space Washers Item 11 and Screws Item 12 Do not lose these parts Using caution the motor will disengage from the Mounting Adapter Plate along with the Relay Junction Box and Pressure Switch Mounting Brackets will also disengage 8 Reverse order to install the new Power Venter Motor 9 TEST FIRE THE UNIT FOR A FEW CYCLES MAKING SURE THAT THE UNIT IS OPERATING SATISFACTORY SI 2 n 26 HOW ORDER REPLACEMENT PARTS Please send the following information to your local representative If further assistance is needed contact the manufacturer s customer service department Model number Serial Number if any Part description and Number as shown in the Replacement Parts Catalog LIMITED WARRANTY SEPARATED COMBUSTION BLOWER UNIT HEATERS 1 The Manufacturer warrants t
56. side surfaces of the heat exchanger Remove any dirt dust or other foreign matter from the burners using a wire brush and or compressed air Ensure that all parts are unobstructed Inspect and clean pilot burner if necessary Reassemble the gas unit heater by replacing all parts in reverse order Complete the appropriate unit start up procedure as given in the Operation section of this manual see unit lighting instruction plate and the unit nameplate Check the burner adjustment See the Primary Air Shutter Adjustment section of this manual Check all gas control valves and pipe connections for leaks Check the operation of the automatic gas valve by lowering the setting of the thermostat stopping the operation of the gas unit heater The gas valve should close tightly completely extinguishing the flame on the main burners Inspect and service the motor fan assemblies To maintain efficient air flow inspect and clean the fan blades and guard to prevent buildup of foreign matter Check lubrication instructions on the motor If oiling is required add 3 to 4 drops of electric motor oil as follows a Light Duty After 3 years or 25 000 hours of operation b Average Duty Annually after 3 years or 8 000 hours of operation c Heavy Duty Annually after 1 year or at least every 1500 hours of operation A CAUTION Never over oil the motor or premature failure may occur 13 Check and
57. st be freight prepaid c determination in the reasonable opinion of the Manufacturer that there exists a defect in material or workmanship 4 Repair or replacement of any part under this Limited Warranty shall not extend the duration of the warranty with respect to such repaired or replaced part beyond the stated warranty period 5 THIS LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EITHER EXPRESS OR IMPLIED AND ALL SUCH OTHER WARRANTIES INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED AND EXCLUDED FROM THIS LIMITED WARRANTY IN NO EVENT SHALL THE MANUFACTURER BE LIABLE IN ANY WAY FOR ANY CONSEQUENTIAL SPECIAL OR INCIDENTAL DAMAGES OF ANY NATURE WHATSOEVER OR FOR ANY AMOUNTS IN EXCESS OF THE SELLING PRICE OF THE PRODUCT OR ANY PARTS THEREOF FOUND TO BE DEFECTIVE THIS LIMITED WARRANTY GIVES THE ORIGINAL OWNER OF THE PRODUCT SPECIFIC LEGAL RIGHTS YOU MAY ALSO HAVE OTHER RIGHTS WHICH MAY VARY BY EACH JURISDICTION In the interest of product improvement we reserve the right to make changes without notice 27 GAS EQUIPMENT START UP Customer Job Name amp Number PRE INSPECTION INFORMATION With power and gas off Type of Equip Unit Heater Duct Furnace Indoor Rooftop Serial Number Model Number Name Plate Voltage Name Plate Amperage Type of Gas Natural LP Tank Capacity Ibs Rating BTUOG F kg
58. the pilot valve opens as a spark is generated to light the pilot When the flame is sensed by the flame sensing circuit the spark ceases and the main gas valve is opened to supply gas to the main burners Once the thermostat has been satisfied the vent system and gas valve are simultaneously deenergized stopping all gas flow to the unit 4 The limit switch interrupts the flow of electric current to the main gas valve if the unit heater becomes overheated 5 The fan switch delays the operation of the fan for approximately 45 seconds once the thermostat is closed and continues fan operation for approximately 65 seconds after the thermostat opens NOTICE The start up fan delay must not exceed 90 seconds from a cold start 6 The wall thermostat supplied optionally is a temperature sensitive switch that operates the vent and ignition systems to control the temperature of the space being heated NOTICE The thermostat must be mounted on a vertical vibration free surface free from air currents and in accordance with the furnished instructions INITIAL LIGHTING 1 Open the manual gas valve in the gas supply line to the unit heater Loosen the union in the gas supply line to purge it of air Tighten the union and check for leaks AWARNING Check all pipe joints for leakage using a soap solution or other approved method Never use an open flame to detect leaks Explosive conditions may exist which could result in property
59. time delay switch If 24V is present jumper terminals numbered 2 and 4 If motor runs the fan switch is defective and must be replaced If 24V is not present check wiring per diagrams P Fan motor turns on and off 1 Fan switch heater element improperly 1 Be sure fan switch heater terminals while burner is operating wired are connected per diagrams 2 Defective fan switch 2 Replace fan switch 3 Motor overload protector cycling on 3 Check motor amps against motor and off name plate rating check voltage replace fan motor if defective 4 Motor not properly oiled 4 Refer to label on motor Q Fan motor will not stop 1 Improperly wired fan control 1 Check all wiring 2 Main burners not lighting while 2 Refer to or symptoms thermostat calls for heat 3 Defective fan switch 3 Replace fan switch R Not enough heat Incorrect gas input 1 Refer to Operation Heater undersized 2 This is especially true when the heated space is enlarged Have the heat loss calculated and compare to the heater output 80 of input Your gas supplier or installer can furnish this information If heater is under 3 Thermostat malfunction sized add additional heaters 4 Heater cycling on limit control 3 Replace thermostat 4 There should be NO ducts attached to the front of this heater Check air movement through heat exchanger Check voltage to fan motor Clean fan blade and heat exchanger and oil fan motor S Too much he
60. tortion or discoloration of adjacent materials AWARNING Make certain that the lifting methods used to lift the heater and the method of suspension used in the field installation of the heater are capable of uniformly supporting the weight of the heater at all times Failure to heed this warning may result in property damage or personal injury A WARNING Make certain that the structure to which the heater is mounted is capable of supporting its weight Under no circumstances must the gas lines the venting system or the electrical conduit be used to support the heater or should any other objects i e ladder person lean against the heater gas lines venting system or the electrical conduit for support A CAUTION Unit heaters must be hung level from side to side and from front to back see figures 1 through 3A Failure to do so will result in poor performance and or premature failure of the unit A WARNING Insure that all hardware used in the suspension of each unit heater is more than adequate for the job Failure to do so may result in extensive property damage severe personal injury or death Refer to Figures 1 through 3A and dimensional data per table 1 for suspension of units Figure 3 Heater Mounting STEEL CONSTRUCTION All hanging hardware and wood is not included with the unit To be field supplied Figure 3A Heater Mounting 100 4
Download Pdf Manuals
Related Search