Adams Condensing Oil-Fired Furnace User's Manual
Contents
1. 18 Circulator Blower Speeds 18 19 Normal Sequence of tit mia 9 Power Up 19 Heating AT cet cina MERO MM 19 Fan Only Mode 19 Cooling Only 19 0 19 systems 20 21 Diagnostic Chart see Honeywell primary control attachment XIV Maintenance amp Annual 22 Annual Inspection 22 Filters Circulator Blowers 18 19 Condensate Trap amp Drain System 22 XV Repair amp Replacement Parts 23 24 Component identification IGNITION TRANSFORMER FUEL PUMP PRESSURE SWITCH DESCRIPTION PART NO FAN TIMER TRANSFORMER BLOWER RELAY RELAY BURNER RELAY 24v TERMINAL STRIP 115v TERMINAL STRIP BLOWER MOTOR TERMINAL BLOCK 8201 SAFETY Please adhere to the following warnings and cautions when installing adjusting altering servicing or operating the furnace TO PREVENT PERSONAL INJURY2. 8 Termination Locations 8 9 10 11 Standard Furnace Connections 10 11 Alternate Furnace Connections 10 11 Direct Non Direct Vent Dual Pipe Piping 11 Vil Condensate Drain Lines amp Drain 14 Vill Electrical Connections 12 115 Volt Line Connections 12 Wiring Diagram 13 24 Volt Thermostat Wiring 14 IX Oil Supply and Piping 15 Oil Lin S 16 X Circulating Air amp 16 Ductwork Air 416 Xl Startup Procedure amp 17 Heat Anticipator Setting __ 18 Drain Trap Priming 1 Operational checks 17 18 19 Oil Pump Pressure Measurement and 17 Temperature Rise
3. CAUTION When simulating a call for heat at the R7184 disconnect at least one thermostat lead wire from the T T 3 terminals to prevent damage to the thermostat Neglecting this procedure may burn out the heat anticipator of a standard 24 VAC thermostat or cause harm to components of a micro electronic thermostat Table1 System and General Troubleshooting PROBLEM POSSIBLE CAUSE REMEDY Thermostat not calling for heat Check thermostat and adjust Be sure it is accurate If it is mercury type be sure it is level Furnace will not start prin juty Check reset button on oll primary control Remove thermostat wire from oil primary control terminal T1 T2 Check for 24 v across T mo is check Cad cell wiring shorted or room light Check cad cell wiring for short circuits Check for room light leaking into cad cell leaking into cad cell compartment compartment Repair light leak if necessary Open safety switch Replace nozzle with high quality replacement Use rating plate or Tables in Appendix A as a guide Furnace will not start without first pushing oil primary control reset Connect pressure gauge to oil pump Adjust pump pressure or replace oil pump if button necessary Ensure that erratic pressure readings are not caused by defective fuel oil line Occurs frequently M Air getting into fuel oil lines or fuel oil Check fuel oil lines Replace any c
4. bend DWV types conforming to ASTM D3311 A medium radius 1 4 bend DWV elbow measures 4 9 16 minimum from the plane of one opening to the centerline of the other opening for 3 diameter pipe PROPER VENT FLUE AND COMBUSTION AIR PIPING PRACTICES Adhere to these instructions to ensure safe and proper furnace performance The length diameter and number of elbows of the vent flue pipe and combustion air pipe effects the performance of the furnace and must be carefully sized All piping must be installed in accordance with local codes and these instructions Piping must be adequately secured and supported to prohibit sagging joint separation and or detachment from the furnace Horizontal runs of vent flue piping must be supported every three to five feet and must maintain a inch per foot downward slope back towards the furnace to properly return condensate to the furnace s drain system Precautions should be taken to prevent condensate from freezing inside the vent flue pipe and or at the vent flue pipe termination All vent flue piping exposed to freezing temperatures below 35 F for extended periods of time must be insulated with 74 thick closed cell foam Also all vent flue piping exposed outdoors in excess of the terminations shown in this manual or in unheated areas must be insulated with 7 thick closed cell foam Inspect piping for leaks prior to installing insulation TERMINATION LOCATIO
5. Do not use other commercially available no hub connectors due to possible material conflicts The vent flue pipe can also be secured using a PVC or ABS elbow or coupling using the appropriate glue see Section VI Materials and Joining Methods VENT FLUE AND COMBUSTION AIR PIPE LENGTHS Refer to the following table for applicable length elbows and pipe diameter for construction of the vent flue and combustion air intake pipe systems of a direct vent dual pipe installation The number of elbows tabulated represents the number of elbows and or tees in each Vent Flue amp Combustion Air Intake pipe Elbows and or tees used in the terminations must be included when determining the number of elbows in the piping systems 2 3 4 5 6 7 50 000 300 000 Standard 68 65 62 59 56 53 50 125 000 If the combustion air intake pipe is to be installed above a finished ceiling or other area where dripping of condensate will be objectionable insulation of the combustion air pipe may be required Use 7 thick closed cell foam insulation such as Armaflex or Insultube where required Non Direct or Direct Vent Dual Pipe Three 3 Inch Pipe Diameter Maximum Allowable Length of Vent Flue and Combustion Air Intake Pipe ft Maximum Allowable Length of Vent flue Air Vent Flue Pipe ft Termination Number of Elbows 2 8 50 000 75 000 100 000 Alternate 125 000 1 Mi
6. GIVEN IN THIS SECTION WARNING UPON COMPLETION OF THE FURNACE INSTALLATION CAREFULLY INSPECT THE ENTIRE FLUE SYSTEM BOTH INSIDE AND OUTSIDE OF THE FURNACE TO ASSURE IT IS PROPERLY SEALED LEAKS IN THE FLUE SYSTEM CAN RESULT IN SERIOUS PERSONAL INJURY OR DEATH DUE TO EXPOSURE TO FLUE PRODUCTS INCLUDING CARBON MONOXIDE A condensing oil furnace achieves its high level of efficiency by extracting almost all of the heat from the products of combustion and cooling them to the point where condensation takes place Because of the relatively low flue gas temperature and water condensation requirements PVC pipe is used as venting material This furnace must not be connected to Type B BW vent or vent connector and must not be vented into any portion of a factory built or masonry chimney except when used as a pathway for PVC as descried later in this section Never common vent this appliance with another appliance or use a vent which is used by a solid fuel appliance Do not use commercially available no hub connector other than those shipped with this product It is the responsibility of the installer to follow the manufacturers recommendations and to verify that all vent flue piping and connectors are compatible with furnace flue products Additionally it is the responsibility of the installer to ensure that all piping and connections possess adequate structural integrity and support to prevent flue pi
7. be used as a construction site heater To ensure proper installation and operation thoroughly read this manual for specifics pertaining the installation and application of this product WARNING Possible property damage personal injury or death due to fire explosion smoke soot condensation electrical shock or carbon monoxide may result from improper installation repair operation or maintenance of this product WARNING To prevent personal injury property damage or death due to fire do not install this furnace in a mobile home trailer or recreational vehicle To ensure proper furnace operation install operate and maintain the furnace in accordance with these installation and operation instructions all local building codes and ordinances INSTALLATION CODES INSTALLATION MUST COMPLY WITH THE REQUIREMENTS OF AUTHORITIES HAVING JURISDICTION All local and national codes governing the installation of oil burning equipment wiring and venting must be followed Some of the applicable codes are CAN CSA B139 Installation Code for Oil Burning Equipment NFPA 31 Installation Code for oil Burning Equipment 90B Warm Air Heating and Air Conditioning Systems ANSI NFPA 70 National Electrical Code CSA C22 1 Canadian Electrical Code ANSINFPA 211 Chimneys Fireplaces Vents and Solid Fuel Burning Appliances A copy of the CAN CSA B139 Installation Codes can be obtain
8. systems The vent system shall terminate at least 3 feet above any forced air inlet located within 10 feet NOTE This does not apply to the combustion air inlet of a direct vent appliance Provide a minimum of 1 foot distance from any door operable window or gravity air inlet into any building Do not locate the exhaust termination directly under an operable window FORCED AIR INLET 12 ABOVE g n J k Provide a minimum of 1 foot clearance from the bottom of the exhaust termination above the expected snow accumulation level Snow removal may be necessary to maintain clearance Provide 4 feet horizontal clearance from electrical meters gas meters air conditioning condensers or other external equipment In no case shall the exit terminal be above or below the aforementioned equipment unless a 4 foot horizontal distance is maintained Do not locate the exit termination over public walkways where condensate could drip or freeze causing a hazard or nuisance When the exhaust termination is adjacent to a public walkway it is to be located at least 7 feet above grade Do not locate exhaust termination directly under roof overhangs to prevent icicles from forming Provide 3 feet clearance from the inside corner of adjacent walls The vent termination of a non direct vent application must terminate at least 4 feet below 4 feet horizontally from or 1 foot above any door window or gravity air inle
9. Condensing Oil Fired Furnace Installation Maintenance and Operation Manual Please leave this manual with the homeowner WARNING Do not store gasoline flammable liquids or vapors in the vicinity of this or any other fuel burning appliance CAUTION Improper installation adjustment alteration or maintenance can cause injury or property damage Please refer to this manual For assistance or additional information contact a qualified installer or service agency TABLE OF CONTENTS TABLE OF CONTENTS l Identification 2 Safety 2 Il Product Application 7 7 7 4 IV Location Requirements amp Considerations 4 Clearances and Accessibility 5 Thermostat 6 Existing Furnace Removal Combustion and Ventilation Air Requirements 6 Vi Vent Flue Pipe amp Combustion Air Non direct Direct 10 Materials and Joining Methods Proper Vent Flue amp Combustion Air Piping Practices
10. E CENTERLINE OF TEE DO NOT USE CEMENT AT METAL COLLAR STAINLESS RUBBER QUICK CONNECT COUPLER CONDENSATE COLLECTOR VENT TO ATMOSHPERE PREFILL TRAP WTH WATER CONDENSATE NEUTRALIZER NEUTRALIZER MUST LAY HORIZONTALLY REPLACE AT THE BEGINNING OF EACH HEATING SEASON FLOOR DRAIN OR CONDENSATE PUMP COMBUSTION AIR BURNER VESTIBULE Note Furnace may be BLOWER SECTION vented from left or right side IX OIL LINE GENERAL The furnace rating plate includes the approved furnace input rating and fuel types The furnace must be equipped to operate on the type of oil applied CAUTION ___ PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE THE OIL LINE PRESSURE MUST BE SET 140 P S I OIL TANK Oil storage tanks must be selected and installed in compliance with applicable codes in the United States NFPA 31 Standard for the Installation of Oil Burning Equipment Chapter 2 and in Canada CAN CSA 8139 Installation Code for Oil Burning Equipment Section 6 Observe all local codes and by lays In general the oil tank must be properly supported and remain stable in both empty and full conditions The oil tank must be fitted with vent and supply pipes to the outdoors Refer to the above mentioned codes for sizing The vent pipe must be no less than 1 inches I P S and terminate with an appropriate vent cap in a location where it will not b
11. GE WHICH MAY RESULT MANY JURISDICTIONS REQUIRE A LICENSE TO INSTALL OR SERVICE HEATING AND AIR CONDITIONING EQUIPMENT INSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER SERVICE AGENCY OR FUEL OIL DEALER To The Installer Before installing this unit please read this manual thoroughly to familiarize yourself with specific items which must be adhered to including but not limited to unit maximum external static pressure oil pressure BTU input rating proper electrical connections circulating air temperature rise minimum or maximum CFM and motor speed connections TRANSPORTATION DAMAGE All units are securely packed in shipping containers tested according to International SafeTransit Association specifications The carton must be checked upon arrival for external damage If damage is found a request for inspection by carrier s agent must be made in writing immediately 1 Make a notation on delivery receipt of any visible damage to shipment or container 2 Notify carrier promptly and request an inspection 3 With concealed damage carrier must be notified as soon as possible preferably within five days 4 Filethe claim with the following support documents within a nine month statute of limitations o Original or certified copy of the Bill of Lading or indemnity bond o Original paid freight bill or indemnity in lieu thereof o Original or certified copy of the invoice sho
12. Increase air to burner to reduce CO2 1 0 to 1 596 less than where you were able to obtain a trace of smoke This procedure allows a margin of reserve for variable conditions 5 Re check smoke to insure it is O Your final CO2 should be 11 59 THERMAL AMBIENT EFFICIENCY PLUS STACK TEMP F jue 156 82 000 Temperature Rise Temperature rise must be within the range below An incorrect temperature rise may result in condensing in or overheating of the heat exchanger Determine and adjust temperature rise as follows 1 Operate furnace with burner firing for approximately ten minutes Ensure all registers are open and all duct dampers are in their final fully or partially open position 2 Place thermometers in the return and supply ducts as close to the furnace as possible Thermometers must not be influenced by radiant heat by being able to see the heat exchanger HEAT EXCHANGER RADIATION LINE OF SIGHT M SUPPLY gt AIR UPPT Temperature Rise Measurement 3 Subtract the return air temperature from the supply air temperature to determine the air temperature rise Allow adequate time for thermometer readings to stabilize 4 Adjust temperature rise by adjusting the circulator blower speed Increase blower speed to reduce temperature rise Decrease blower speed to increase temperature rise Set thermostat heat anticipator setting at 0 2 A as a base point Operate furnace and m
13. NS EXHAUST VENT INLET AIR LOCATION 1 The vent piping for this furnace is approved for zero clearance to combustible construction 2 he condensing oil furnace like all high efficiency products is likely to produce a visible vapor plume due to condensation Surfaces near the vent termination will likely be coated with condensation 3 Care must be taken to locate the exhaust vent where the exhaust gas vapor plume and condensation do not cause a hazard or nuisance For example so not locate the exhaust vent termination under a deck where under certain conditions it could form a coating of ice causing a hazard or reduce the life of the deck materials Fitting Description Equivalent Length Elbow 45 Vertical Vent Termination Sidewall Vent Termination a 0 d e Sidewall Vent System Sidewall vented products are susceptible to wind conditions that can effect combustion To minimize the effects of wind exhaust and air inlet terminations must penetrate the same wall or vertical surface In addition the length of the exhaust and air inlet pipes must be roughly equivalent Condensation from a sidewall vented appliance may cause paint and other surface coatings to deteriorate In addition soot stains may appear on surrounding surfaces if the furnace is not properly maintained See Figure 2 for an illustration of clearances for location of exit terminals for direct vent sidewall venting
14. OR DEATH DUE TO IMPROPER INSTALLATION ADJUSTMENT ALTERATION SERVICE OR MAINTENANCE REFER TO THIS MANUAL FOR ADDITIONAL ASSISTANCE OR INFORMATION CONSULT A QUALIFIED INSTALLER SERVICE AGENCY OR THE FUEL OIL SUPPLIER HIGH LIMIT PRIMARY CONTROL BURNER MOTOR FUEL FILTER HEAD FUEL FILTER CARTRIDGE AUXILIARY LIMIT MANUAL RESET CONDENSATE COLLECTOR BLOWER DOOR INTERLOCK SWITCH BLOWER SECTION Figure 1 HIGH VOLTAGE TO AVOID PROPERTY DAMAGE PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK THE FURNACE MUST BE LOCATED TO PROTECT THE ELECTRICAL COMPONENTS FROM WATER DO NOT UTILIZE THE HEATING UNIT WITHOUT REASONABLE ROUTINE INSPECTION MAINTENANCE AND SUPERVISION IF THE UNITISINA BUILDING THAT IS OR WILL BE VACANT CARE SHOULD BE TAKEN TO ROUTINELY INSPECT MAINTAIN AND MONITOR THE UNIT IN THE EVENT THAT THE BUILDING MAY BE EXPOSED TO FREEZING TEMPERATURES AND WILL BE VACANT DRAIN ALL WATER BEARING PIPES PROPERLY WINTERIZE THE BUILDING AND TURN OFF ALL WATER SOURCES IN THE EVENT THAT THE BUILDING IS EXPOSED TO FREEZING TEMERATURES AND IS VACANT ANY HYDRONIC COIL UNITS SHOULD ALSO BE DRAINED AND AN ALTERNATIVE HEAT SOURCE UTILIZED WARNING WE WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE PROCEDURES IF YOU INSTALL OR PERFORM SERVICE ON THIS UNIT YOU ASSUME RESPONSIBILLITY FOR ANY PERSONAL INJURY OR PROPERTY DAMA
15. OTE Wire routing must not interfere with circulator blower operation filter removal or routine maintenance Low voltage connections can be made through either the right or left side panel Thermostat wiring entrance holes are located adjacent to the junction box locations in the blower compartment Thermostat Diagram This furnace is equipped with a 40 VA transformer to facilitate use with most cooling equipment Consult the wiring diagram located on the blower compartment door for further details of 115 Volt and 24 Volt wiring Vill CONDENSATE DRAIN LINES amp DRAIN TRAP GENERAL A condensing oil fired furnace achieves its high level of efficiency by extracting almost all of the heat from the products of combustion and cooling them to the point where condensation takes place The condensate which is generated must be piped to an appropriate drain location The furnace s drain hoses may exit either the right or left side of the furnace In horizontal installations the drain hoses will exit through the bottom down side of the unit with the drain trap suspended beneath the furnace The field supplied drain system must be in accordance with all local codes and the instructions in the following sections Follow the instructions below when installing the drain system Refer to the following sections for specific details concerning furnace drain trap installation and drain hose hook ups The drain trap supplied wit
16. _ 34 1291 ____37 CONDENSATE NEUTRALIZER 2021HO0 __ SAME MERI NEUTRALIZER REFILL COIL TURBULATORS 60 14 or 40 5 8 specify size _ _60T14 205960A ________ ________ TRANSFORMER GH1033 SAME AN xi FAN TIMER i c CTVS24A SAME F RELAY 2 RELAY M 32312 SAME 9 46 RELAY 1 RELAY 2 RELAY 3 2 SAME 45 24VOLTTERMNALSTRIP AGH1059 SAME 48 110 VOLT TERMINAL STRIP AGH1059 5 BLOWER MOTOR TERMINAL BLOCK ____ 48 CONTROL ACCESS COVER 1 324 0 SAME 49 CONTROLPANELCOMPLETE _A3123HEO SAME 0 49A CONTROL PANEL COMPLETE LHEO _ HEAT EXCHANGER REBUILD KIT A3051RBK
17. all appliances within the space but not less than 100 square inches If the furnace is installed in a space within a building of tight construction and air must be supplied from outdoors In this case one opening shall be within 12 of the ceiling and the other within 12 of the floor If vertical combustion ducts are run each opening must have a free area of at least 1 square inch per 4000 BTU per hour If horizontal combustion ducts are run 1 square inch per 2000 BTU per hour of the total input of all appliances is required A return air duct system is recommended Where there is no complete return air duct system a return connection should be run full size to a location outside the confined space and completely sealed so that no air from the confined space can be circulated through the heating duct system EXISTING FURNACE REMOVAL NOTE When an existing furnace is removed from a venting system serving other appliances the venting system may be too large to properly vent the remaining attached appliances If this furnace is to be installed in the same space with other oil fired appliances such as a water heater ensure there is an adequate supply of combustion and ventilation air for the other appliances Vi VENT FLUE PIPE amp COMBUSTION AIR PIPE WARNING FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN BODILY INJURY OR DEATH CAREFULLY READ AND FOLLOW ALL INSTRUCTIONS
18. appliances Appliances that pull air out of the house exhaust fans fireplaces clothes dryers etc increase the problem by starving appliances for air House depressurization can cause back drafting or improper combustion of oil fired appliances thereby exposing building occupants to combustion products that could include carbon monoxide and cause 1 Nausea Headaches Dizziness Flu Like symptoms 2 Excessive humidity heavily frosted windows or a moist feeling in the home 3 Smoke from a fireplace will not draw up the chimney 4 Flue gases that will not draw up the appliance vent pipe Combustion and Ventilation Air Adequate provisions for combustion air ventilation of furnace and dilution of the gases must be made When a furnace 15 installed in an unconfined space in a building it can be assumed that infiltration will be sufficient to supply the required air If the furnace is installed in a confined space and combustion air is taken from the heated space the supply air and ventilating air must be through two permanent openings of equal area A confined space is a space whose volume is less than 50 cubic feet per 1000 BTU per hour of the combined input rating of all appliances installed in that space One opening must be within 12 of the ceiling and the other within 12 of the floor Each opening must have a minimum free area of at least 1 square inch per 1000 BTU per hour of total input rating of
19. artment This bracket may be confused for a shipping bracket and must not be removed This bracket is installed in up flow and counter flow models only It is a sheet metal support bracket in the blower compartment Prime condensate drain trap with water Operate the burner for 3 minutes on 3 minutes off twice Operate the burner for approximately 30 40 minutes to cure the internal ceramic fiber combustion chamber Be aware of moderate odor smoke upon initial firing and gradually diminishing to normal over the break in period Note the air handler should be operating at all times during the break in period and final tuning You are now ready for the final fine tuning The burner air settings are approximate and needs to be adjusted to the vent system in the field for most efficient operation 17 Drill a 3 8 hole in the PVC exhaust vent piping approximately 18 above where the PVC exits the side of the furnace for your combustion analysis equipment Seal with RTV silicone when finished conducting combustion analysis m SS SST SS SE SS A uaa car sre 1 7 j 1 4 MILF Bm m ie n c 2722 4 1 Operate burner for 15 minutes before conducting test work 2 Adjust burner settings until a trace 0 1 on a smoke scale of 10 is obtained with smoke test pump 3 Read CO2 This should be approximately 13 0 PES b 4
20. asured from the bottom outlet of the tank to the inlet of the burner Sizing a single line system is complex because of the difficulty estimating the pressure drop through each fitting bend and component in the line In general keep single line systems short as possible Two stage oil pumps are available for either the INTERburner or Beckett burner The following chart shows the allowable line lengths horizontal amp vertical for single and two stage oil pumps All distances are in feet In retrofit applications where an existing oil line system is in place a vacuum check will help determine the integrity of the existing oil line system The vacuum in a system should not exceed 6 Hg For a single pipe system not 12 Hg For a two pipe system To eliminate air leakage fuel line should be a continuous length from tank to burner and flare fittings must be used on all connections On threaded connections use pipe dope that is resistant to fuel oil Rector seal 5 Permatex or equivalent Do not use PTFE joint tape OIL LINES 3 8 E O D D Tubing Tubing TU For additional information see the installation information sheet included in the documents envelope or affixed to the oil burner and R W Beckett Bulletin 664805 Solving After Drip and Locating Oil Line Leaks Bulletin 664822 NOTE Both the INTERburner AND Beckett oil burners require the use of a bypass plu
21. be handled once it is cured at startup Structural damage will occur if handled and if broken the furnace will be rendered inoperative If the secondary heat exchanger turbulators have a light coating of soot this is normal and will not affect the efficiency of the furnace XV REPAIR amp REPLACEMENT PARTS MGE Pie 1e By B cu onu _____ 10001 HE SAME A1011 HEO SAME quem pum 3A OIL FILTER CARTRIDGE 2 4 HIGH LIMIT SWITCH 4 O HIGH LIMIT SWITCH counterflow l 5 L 3 1 10 _____ EXCHANGER 10a ____ REAR ACCES DOOR 108 REAR ACCCESS COVER GASKET A3053HEO A1081HEO REAR COMPARTMENT DOOR _ 13 MPAR __________ 1 __ AIR FILTER Not Shown AIR FLOW SWITCH INTERbumer A4000NX R 1151 _ _ SAME _ _FRONT COIL GASKET 1181 0 SAME HEAT RECOVERY COIL _ 1181 071 7 EXCHANGER SUPPORT LEFT __ SAME COMBUSTION CHAMBER SUPPORT RIGHT A3111HEO 27 3 3 GDO DOORSWICH 200 SAME 29 BLOWER WHEEL ONLY Not Shown ______ __ 5 31 MOTOR MOUNT GROOMET amp SLEEVE Not Shown m BLOWER MOTOR MTR13DD MTR34DD BLOWER MOTOR MOUNT A1311 HEO ___
22. chloric acid Cements and glues Antistatic fabric softeners for clothes dryers Masonry acid washing materials Seal off non direct vent furnace if it is installed near an area frequently contaminated by any of the above substances This protects the non direct vent furnace from airborne contaminants To ensure that the enclosed non direct vent furnace has an adequate supply of combustion air vent from a nearby uncontaminated room or from outdoors Refer to the Section V combustion and Ventilation Air Requirements for details If the furnace is used in connection with a cooling unit install the furnace upstream or in parallel with a cooling unit Premature heat exchanger failure will result if the cooling unit is placed ahead of the furnace If the furnace is installed in a residential garage position the furnace so that the burner and ignition source are located not less than 18 inches 457 mm above the floor Protect the furnace from physical damage by vehicles Clearances and Accessibility Installations must adhere to the clearances to combustible materials to which this furnace has been design certified The minimum clearance information for this furnace is provided on the units rating label These clearances must be permanently maintained Clearances must also accommodate an installation s oil electrical and drain trap and drain line connections If the alternate vent flue connections are used a
23. ck that furnace is installed level This is important since the secondary heat exchanger is pitched at 3 degrees for proper condensate drainage Check with a carpenters level and shim accordingly Verify that the fuel supply lines are leak free Inspect all connections for air leaks Fuel system integrity is often assumed but cannot be overlooked Test the fuel system for integrity Even a small leak can cause a multitude of burner issues Never use compression fittings Verify pump pressure with appropriate test instrument 140 PSI for Adams INTERburner Mark 10 or Beckett NX Check pump seal by shutting off pump and noting the pressure drop The pump pressure should drop approximately 2096 and hold indefinitely Prime oil filter supplied with the appliance before bleeding air from system Purge the oil pump of air in the system as soon as the burner motor starts rotating by opening bleeder valve on pump and catch oil in suitable container Check post purge timing on primary safety control by examining dip switch configuration on the primary control This control is factory set at 8 minutes post purge time Locate fan control in blower compartment Check blower on time delay Set delay for 30 seconds Verify blower off delay setting at 390 600 seconds This is required for proper heat removal from the heat exchanger once the thermostat is satisfied Do not remove blower deck support bracket located in the blower comp
24. ction of all limit switches Use a duct thermometer to assess accuracy of limit control Check for obstructions to airflow around limit switch bi metal elements Replace control if necessary NOTE A high limit is auto reset B Auxiliary limit is silane one use larger nozzle if Table1 System and General Troubleshooting POSSIBLE CAUSE REMEDY Home not Improper distribution of heat This is unlikely to be a furnace problem Balance duct system with dampers heat evenly Airflow blocked or dirty air filter Clean or replace air filter Supply air temperature t Supply air re too cool during first Replace Delevan nozzle with exact capacity angle and pattern as supplied Replace vestibule mounted oil filter with AF 1 filter Replace condensate neutralizer with part number CCR 1 Remove air handler assembly slide out and inspect the bottom upflow configuration of the secondary heat exchanger Loosen accumulated foreign matter with soft brush and vacuum clean Perform all routine safety switch function checks Perform combustion analysis as described on page 18 Burner Adjustment Do not remove rear access panel of heat exchanger Internal cleaning of the primary or secondary heat exchangers are not required unless satisfactory combustion analysis cannot be achieved CAUTION The ceramic combustion chamber located in the primary heat exchanger should not
25. dditional clearance must be provided to accommodate these conditions Section IX Vent Flue Pipe and Combustion Air Pipe for details NOTE In addition to the required clearances to combustible materials a minimum of 24 inches service clearance must be available in front of the unit A clearance of 24 inches at the rear of the unit is also recommended Thermostat Location The thermostat should be placed approximately five feet from the floor on a vibration free inside wall in an area having good air circulation Do not install the thermostat where it may be influenced by any of the following o Drafts or dead spots behind doors in corners or under cabinets Hot or cold air from registers Radiant heat from the sun Light fixtures or other appliances Radiant heat from a fireplace Concealed hot or cold water pipes or chimneys Unconditioned areas behind the thermostat such as an outside wall 0 0 0 0 0 WARNING TO AVOID PROPERTY DAMAGE PERSONAL INJURY OR DEATH SUFFICIENT FRESH AIR FOR PROPER COMBUSTION AND VENTILATION OF FLUE GASES MUST BE SUPPLIED MOST HOMES REQUIRE OUTSIDE AIR BE SUPPLIED INTO THE FURNACE AREA Improved construction and additional insulation in buildings have reduced heat loss by reducing air infiltration and escape around doors and windows These changes have helped in reducing heating cooling costs but have created a problem supplying combustion and ventilation air for burning
26. e blocked The fill pipe must be no less than 2 inches 5 and terminate with an appropriate cap in a location where debris will not enter the fill pipe during oil delivery If located indoors the tank should normally be in the lowest level cellar basement etc it must be equipped with a shut off valve at the tank outlet used for the oil supply The oil tank must be located as to not block the furnace room exit pathway Observe all clearances specified in the above mentioned codes PIPING INSTALLATION In the United States NFPA 31 Standard for the Installation of Oil Burning Equipment Chapter 2 In Canada the entire fuel system should be installed in accordance with the requirements of CAN CSA B139 and local regulations Use only approved fuel oil tanks piping fittings and oil filters Ensure that all fittings used in a copper oil line system are high quality flare fittings Do not use compression fittings Do not use Teflon tape on an fittings Pressurized or gravity feed installations must not exceed 3 PSIG Pressures greater than 10 PSIG may cause damage to the shaft seal If the height of the oil stored in a tank above the oil burner exceeds 11 feet it may be necessary to use a pressure regulating device approved for this purpose 15 The furnace may be installed with a one pipe system with gravity feed or lift The maximum allowable lift on a single line system is 8 feet Lift should be me
27. e if the piping system from furnace to termination can be accomplished within the guidelines given NOTE The length of flue and or combustion air piping can be a limiting factor in the location of the furnace Locate the furnace so condensate flows downwards to the drain Do not locate the furnace or its condensate drainage system in any area subject to below freezing temperatures without proper freeze protection Refer to Section X Condensate Drain Lines and Trap for further details Ensure adequate combustion air is available for the furnace Improper or insufficient combustion air can expose building occupants to combustion products that could include carbon monoxide Refer to Section V Combustion and Ventilation Air Requirements Set the furnace on a level floor to enable proper condensate drainage If the floor becomes wet or damp at times place the furnace above the floor on a concrete base sized approximately 1 1 2 times larger than the base of the furnace Exposure to contaminated combustion air will result in safety and performance related problems Do not install the furnace where the combustion air is exposed to the following substances Chlorinated waxes or cleaners Chlonine based swimming pool chemicals Water softening chemicals Deicing salts or chemicals Carbon tetrachloride Halogen type refrigerants Cleaning solutions such as perchloroethylene Printing inks Paint removers Vanishes Hydro
28. easure anticipation amperage and adjust thermostat to manufacturer s instructions CIRCULATOR BLOWER SPEEDS This furnace is equipped with a multi speed circulator blower This blower provides ease in adjusting blower speeds These blower speeds should be adjusted by the installer to match the installation requirements so as to provide the correct heating temperature rise and correct cooling CFM To adjust the circulator blower speed proceed as follows 1 Turn OFF power to the furnace 2 Relocate desired motor leads to the circulator blower terminals on the terminal block as required 3 Turn ON power to furnace 4 Verify proper temperature rise as outlined in Section XIV Startup Procedure and Adjustment Temperature Rise 18 FAN ONLY MODE NORMAL SEQUENCE OF OPERATION POWER UP MODE The normal power up sequence is as follows 115 VAC power applied to furnace Furnace awaits call from thermostat HEATING MODE The normal operational sequence in heating mode is as follows W thermostat contacts close initiating a call for heat Closure of the thermostat switch through relay 1 energizes primary control on the burner Primary control goes in the pre purge cycle runs for 15 seconds and then goes into ignition sequence burner ignites Blower operation is controlled by Blower Delay On Off Control Relay mounted in control panel face of blower With factory s
29. ed from CSA International 178 Rexdale Boulevard Etobicoke Ontario Canada M9WIR3 Of CSA International 8501 East Pleasant Valley Cleveland OH 44131 The rated heating capacity of the furnace should be greater than or equal to the total heat loss of the area to be heated The total heat loss should be calculated by an approved method or in accordance with ASHRAE Guide or Manual J Load Calculations published by the Air Conditioning Contractors of America IV LOCATION REQUIREMENTS amp CONSIDERATIONS GENERAL WARNING TO PREVENT POSSIBLE EQUIPMENT DAMAGE PROPERTY DAMAGE PERSONAL INJURY OR DEATH THE FOLLOWING BULLET POINTS MUST BE OBSERVED WHEN INSTALLING THE UNIT Follow the instructions listed below when selecting a furnace location Refer also to the guidelines provided in section V Combustion and Ventilation Air Requirements Centrally locate the furnace with respect to the proposed or existing air distribution system Ensure the temperature of the return air entering the furnace is between 55 F and 90 F when the furnace is heating Provide provisions for venting combustion products outdoors through a proper venting system Special consideration should be given to vent flue pipe routing and combustion air intake pipe when applicable Refer to Section IX Vent Flue Pipe and Combustion Air Pipe Termination Locations for appropriate termination locations and to determin
30. etting DELAY ON MAKE of 30 sec approximately 30 seconds after burner ignites blower relay energizes to run comfort blower in the heating speed mode Blower speed heating is factory set on high speed THERMOSTAT SATISFIED When the thermostat satisfied heat contact opens through relay No 1 primary control relay drops out which de energizes the primary control Burner goes into post purge cycle and then shuts off With factory setting DELAY ON BREAK of 600 seconds comfort blower continues to run for approximately 390 600 seconds after burner is satisfied The normal operational sequence in fan only mode is as follows thermostat contacts close initiating a call for fan e Circulator blower is energized Circulator blower runs thermostat contacts open completing the call for fan e Circulator blower is de energized Furnace awaits next call from thermostat COOLING MODE When the heat cool switch is in the cool position and the thermostat calls for cooling 24 volts AC at C and Y will complete the circuit to contactor in condensing unit TROUBLESHOOTING IMPORTANT DUE TO THE POTENTIAL HAZARD OF LINE VOLTAGE ONLY A TRAINED EXPERIENCED SERVICE TECHNICIAN SHOULD PERFORM THE TROUBLESHOOTING PROCEDURE PRELIMINARY STEPS Check the diagnostic light for indications of burner condition Refer to R7184 LED Diagnostic Light section for details
31. g when converting from single pipe to two pipe oil piping systems See burner manufacturer s instructions X CIRCULATING AIR amp FILTERS Ductwork Air Flow Duct systems and register sizes must be properly designed for the CFM and external static pressure rating of the furnace Design the ductwork in accordance with the recommended methods of Air conditioning Contractors of America Manual D Install the duct system in accordance with Standards of the National Board of Fire Underwriters for the installation of Air Conditioning Warm Air Heating and Ventilating Systems Pamphlets No 90A and 90B A closed return duct system must be used with the return duct connected to the furnace NOTE Ductwork must never of the furnace Flexible joints may be used for supply and return connections to reduce noise transmission To prevent the blower from interfering with combustion air or draft when a central return is used a connecting duct must be installed between the unit and the utility room wall Never use a room closet or alcove as a return air chamber No furnace will operate or heat properly if the duct work it is attached to is not sized or installed correctly Warm air runs should have dampers installed so that they can be balanced room to room Dampers should be adjusted to provide a minimum of 0 20 and a maximum of 0 50 inches water column external static pressure in the warm air plenum Keep in mind that 95
32. h the furnace must be used DRAIN TRAP ASSEMBLY Check for proper fit of the entire assembly Before cementing the individual components together Place the flexible pipe coupling on the sub protruding from the 90 degree elbow connected to the condensate collector then insert the 6 inch pipe stub and tighten the clamps on each end of the flexible coupling Attach the tee to the stub coming out of the furnace and insert 10 inch stub to bottom of the tee Attach the trap assembly to the bottom of the stub using PVC pipe coupling Do Not use pipe cement on the flexible pipe coupling Add water to the trap until some runs out of the drain overflow Do not install the drain in areas subject to freezing DRAIN CONNECTION Insert the gt inch ID tubing through the hole in the cabinet and press on to the barb fitting Do not use excessive force on the drain pan Connect the other end to the top 90 degree barb on the drain trap assembly Connect another piece of tubing to the bottom of the tee on the drain trap and run to the condensate neutralizer The condensate neutralizer must lay in a horizontal position Connect installer furnished tubing type UVT or equivalent ID to the other end of the condensate neutralizer and run to a drain Do not install the drain in areas subject to freezing 14 FLUE PRODUCTS MAKE HOLE HERE FOR CO2 MEASUREMENT SMOKE AND TEMPERATURE READINGS SEAL WITH RTV SILICONE APPROXIMATELY 18 ABOV
33. n the pipes and the chimney must be closed with a weather tight corrosion resistant flashing Both the combustion air intake and vent flue pipe terminations must be in the same atmospheric pressure zone Refer to Section VI Vent flue and Combustion air Pipe Termination Locations or Concentric Vent Termination for specific details on termination construction For details concerning connection of pipes to the furnace refer to the Section VI Vent Flue Pipe and Combustion Pipe Standard Furnace connections or alternate furnace connections ROOF VENT SYSTEM The vent termination of vent pipe run vertically through a roof must terminate at least 12 inches above the roof line or the anticipated snow level and be at least 12 inches from any vertical wall including any anticipated snow build up COMBUSTION AIR INTAKE ALY il Vertical Terminations Dual Pipe 1 b SHOWLEVEL Horizontal terminations should be as shown in the following figure Refer to Section VI Vent Flue Pipe and Combustion Pipe Termination Location for location restrictions A 3 inch diameter hole is required for 3 diameter pipe To secure the pipe passing through the wall and prohibit damage to piping connections a coupling should be installed on either side of the wall and solvent cemented to a pipe connecting the two couplings The pipe length should be the wall thickness plus the depth of the socket fitti
34. ngs Check electrodes for dirt build up or cracks in porcelain Poor transformer high voltage connections Check contacts between the igniter and electrodes If OK replace the igniter defective transformer Refer to start up procedure for correct temperature rise Check for clogged air filters Check blower fan for excess dirt build up or debris Speed up blower fan if necessary Check stack temperature Stack temperatures will normally range from 20 42 degrees above ambient Check thermostat heat anticipator setting against measured amperage draw Increase aipe or aeng if necessary Ifthe thermostat is being influenced by drafts ht duct work etc relocate to more suitable location Poor alignment of between oil burner blast Check alignment Blast tube should be centered with fire pot burner opening Oil burner tube and fire pot head should be inch back from the inside surface of the fire pot Airflow blocked or dirty air filter Clean or replace air filter Check thermostat heat anticipator setting against measured amperage draw Increase heat anticipator setting if necessary If the thermostat is being influenced by drafts sunlight duct work etc relocate to more suitable location Insufficient airflow Check all dampers Open closed dampers including registers in unused rooms Check system temperature rise If temperature rise is too high speed up blower fan Defective high limit control Test high limit fun
35. ngs to be installed on the inside and outside of the wall The wall penetration should be sealed with silicone caulking material 177 ABOVE HIGHEET ANTICIPATED Alternate Horizontal Vent Termination Dual Pipe 11 Vil ELECTRICAL CONNECTIONS WARNING HIGH VOLTAGE To avoid the risk of electrical shock wiring to the unit must be polarized and grounded I WARNING HIGH VOLTAGE To avoid personal injury or death due to electrical shock disconnect electrical power before servicing or changing any electrical wiring CAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation Verify proper operation after servicing Wiring Harness The wiring harness is an integral part of this furnace Field alteration to comply with electrical codes should not be required Wires are color coded for identification purposes Refer to the wiring diagram for wire routings If any of the original wire as supplied with the furnace must be replaced it must be replaced with wiring material having a temperature rating of at least 105 degrees C Any replacement wiring must be copper conductor 115 Volt Line Connections Before proceeding with electrical connections ensure that the supply voltage frequency and phase correspond to that specified on the unit rating plate Power supply to the furnace must be N E C Class 1 and must c
36. nimum requirement for each vent pipe is five 5 feet in length and one elbow tee 2 Tee used in the vent flue termination must be included when determining the number of elbows in the piping system 3 3 diameter 4 Increased Clearance Configurations using 2 45 degree Long Sweep elbows should be considered equivalent to one 90 degree elbow Vent Fiue and combustion Air Pipe Terminations The vent flue and combustion air pipes may terminate vertically as through a roof or horizontally as through an outside wall Vertical pipe terminations should be as shown in the following figure Refer to Section VI Vent Flue Pipe and Combustion Pipe Termination Locations for details concerning location restrictions The penetrations through the roof must be sealed tight with proper flashing such as is used with a plastic plumbing vent 10 Installations require both a vent flue pipe and a combustion air intake pipe Refer to the appropriate section for details concerning piping size length number of elbows furnace connections and terminations INTERburner Installations require both a combustion air intake and a vent flue pipe The pipes may be run horizontally and exit through the side of the building or run vertically and exit through the roof of the building The pipes may be run through an existing unused chimney however they must extend a minimum of 12 inches above the top of the chimney The space betwee
37. of all burner and pump problems are caused by three factors Air leak in the fuel line improperly sized fuel lines and dirty fuel When the furnace is used in connection with a cooling unit the furnace should be installed in parallel with or on the upstream side of the cooling unit to avoid condensation in the heating element With a parallel flow arrangement the dampers or other means used to control the flow of air must be adequate to prevent chilled air from entering the furnace and if manually operated must be equipped with means to prevent operation of either unit unless the damper is in the full heat or cool position FILTERS READ THIS SECTION BEFORE INSTALLING THE RETURN AIR DUCTWORK A FILTER MUST BE USED WITH THIS FURNACE Discuss filter maintenance with the building owner Filters are shipped with this furnace Filters must comply with UL900 or CAN ULCS111 standards If the furnace is installed without filters the warranty will be void Inspect Filter Frequently Replace 3 times each heating season Xl START UP PROCEDURE amp ADJUSTMENT Please read the procedures outlined below and familiarize yourself with the appliance sequence of operation before conducting any tests or starting the appliance Note A separate start up form is attached to the installation instructions and must be completed and returned to the manufacturer for warranty registration within 30 days of installation Che
38. omply with all applicable codes and or The Canadian Electric Code CSA C22 1 Use a separate fused branch electrical circuit containing properly sized wire minimum 12 gauge and fuse or circuit breaker The furnace must be electrically grounded in accordance with local codes or in their absence with the latest edition of The National Electric Code ANSI NFPA 70 The fuse or circuit breaker must be sized in accordance with the maximum over current protection specified on the unit rating plate An electrical disconnect must be provided at the furnace location NOTE Line polarity must be observed when making field connections WARNING THE DRAIN TRAP MUST VBE MOUNTED ON THE OPPOSITE SIDE OF THEUNIT FROM THE JUNCTION BOX THIS WILL REDUCE THE RISK OF WATER REACHING THE JUNCTION BOX IN THE EVENT OF A BLOCKED DRAIN CONDITION Connect hot neutral and ground wires as shown in the wiring diagram located on the unit s blower door Line polarity must be observed when making field connections Line voltage connections can be made through either the right or left side panel The furnace is shipped configured for a right side electrical connection with the junction box located inside the blower compartment To make electrical connections through the opposite side of the furnace the junction box must be relocated to the other side of the blower compartment prior to making electrical connections NOTE Wire routing mus
39. ompression fittings found with high quality flared line dirty clogged or in some fittings Check for any signs of oil leaks Any oil leak is a potential source of air or manner defective i Defective burner motor Shack bumer motor If burner motor is cutting out on over load determine why Cad cell is dirty or defective If cad cell is dirty clean it Determine why cad cell is getting dirty If cad cell is poorly aimed realign it NOTE The photocell should have a resistance of 100K ohms in absence of light a maximum of 1500ohms in the presence of light Ensure that room light is not leaking into the cad cell compartment See diagnostic Furnace starts but shuts off requiring manually resetting the primary control reset button Connect pressure gauge to oil pump Adjust pump pressure or replace oil pump if necessary Ensure that erratic pressure readings are not caused by defective fuel oil line Air getting into fuel oil lines or fuel oil Check fuel oil lines Replace any compression fittings found with high quality flared line dirty in or in some fittings Check for any signs of oil leaks Any oil leak is a potential source of air or manner ir Frozen oil line Gently warm oil line Insulate oil line Outdoor piping size may require increased diameter Table1 System and General Troubleshooting PROBLEM POSSIBLE CAUSE REMEDY u Electrodes out of adjustment or defective Check electrode setti
40. pe separation shifting or sagging during furnace operation MATERIALS AND JOINING METHODS WARNING TO AVOID BODILY INJURY FIRE OR EXPOLSION SOLVENT CEMENTS MUST BE KEPT AWAY FROM ALL IGNITION SOURCES SPARKS OPEN FLAMES AND EXCESSIVE HEAT AS THEY ARE COMBUSTIBLE LIQUIDS AVOID BREATHING CEMENT VAPORS OR CONTACT WITH SKIN AND OR EYES Three inch nominal diameter PVC Schedule 40 pipe meeting ASTM D1785 PVC primer meeting ASTM F6566 and PVC solvent cement meeting ASTM D2564 specifications must be used Fittings must be DWV type fittings meeting ASTM D2665 and ASTM D3311 Carefully follow the manufacturer s instructions for cutting cleaning and solvent cementing of PVC As an alternative to PVC pipe primer solvent cement and fittings ABS materials which are in compliance with the following specifications may be used Three inch ABS Schedule 40 pipe must meet ASTM D1527 and if used in Canada must be CSA listed solvent cement for ABS to PVC transition joint must meet ASTM D2235 and if used in Canada must be CSA listed The solvent cement for the PVC to ABS transition joint must meet ASTM D3138 Fittings must be DWV type fittings meeting ASTM D 2661 and ASTM D3311 and if used in Canada must be CSA listed Carefully follow the pipe manufacturers instructions for cutting cleaning and solvent cementing PVC and or ABS All 90 elbows must be medium radius 1 4 bend DWV or long radius Long sweep
41. t into any building EXPECTED SNOW ACCUMULATION IF 15 LESS THAN 10 FT THEN 8 IS TO BE 3 FT MINIMUM TANK AIR VENT DIRECT VENT TERMINATION Location of Exit Terminals of Mechanical Draft and Direct Venting Systems Figure 2 9 STANDARD FURNACE CONNECTIONS It is the responsibility of the installer to ensure that the piping connections to the furnace are secure airtight and adequately supported All furnaces are shipped with a combustion air connection on the cabinet exterior and a flue connector on the inside of the cabinet on the condensate collector box VENT FLUE PIPE Vent flue pipe can be secured to the vent flue coupling using the rubber coupling and worm gear hose clamps provided with this furnace see Standard connections figure The rubber coupling allows separation of the vent flue pipe from the furnace during servicing Combustion Air and Vent piping should be routed in a manner to avoid contact with refrigerant lines metering devices condensate drain lines etc If necessary clearances may be increased by utilizing two 45 degree Long Sweep Elbows and creating an S joint to provide additional space at connection locations This joint can be rotated on the fitting to establish maximum clearance between refrigerant lines metering devices and condensate drain lines etc This joint is the equivalent of one 90 degree elbow when considering elbow count NOTE
42. t not interfere with circulator blower operation filter removal or routine maintenance WARNING EDGES OF SHEET METAL HOLES MAY BE SHARP USE GLOVES AS A PRECAUTION WHEN REMOVING HOLE PLUGS 12 PRESS SW LIM LIM HIGH BLACK MED BLUE LOW RED 2 ex a te SUPPLY lE co Uer DESI ig SECTETUR GR A m i MNT rr CLEANER 24V TERMINAL 207 TERMINAL 24N FIELD WIRING STRIP STRIP A HIGH LIMIT CHEO ONLY _Relay 1 Burner Relay 2 Heating a ee Wiring Diagram WARNING HIGH VOLTAGE TO AVOID THE RISK OF INJURY ELECTRICAL SHOCK OR DEATH THE FURNACE MUST BE ELECTRICALL Y GROUNDED IN ACCORDANCE WITH LOCAL CODES OR IN THEIR ABSENCE WITH THE LATEST EDITION OF THE NATIONAL ELECTRIC CODE To ensure proper unit grounding the ground wire should run from the furnace ground screw located inside the furnace junction box all the way back to the electrical panel NOTE Do not use oil piping as an electrical ground To confirm proper unit grounding turn off the electrical power and perform the following check 1 Measure resistance between the neutral white connection and a suitable chassis ground 2 Resistance should measure 10 ohms or less This furnace is equipped with a blower door interlock switch which interrupts unit voltage when the blower door is opened for servicing Do not defeat this switch 24 Volt Thermostat Wiring N
43. wing trade and other discounts or reductions o Copy of the inspection report issued by carrier s representative at the time damage is reported to carrier The carrier is responsible for making prompt inspection of damage and for a thorough investigation of each claim The distributor or manufacturer will not accept claims from dealers for transportation damage Keep this literature in a safe place for future reference Ill PRODUCT APPLICATION This furnace is primarily designed for residential home heating applications It is NOT designed or certified for use in mobile home trailers or recreational vehicles This unit is NOT designed or certified for outdoor applications The furnace must be installed indoors i e attic space crawl space or garage area provided the garage area is enclosed with an operating door This furnace can be used in the following non industrial commercial applications Schools Office buildings Churches Retail stores Nursing homes Hoteis motels common or office areas In such applications the furnace must be installed with the following stipulations o It must be installed per the installation instructions provided and per local and national codes o It must be installed indoors in a building constructed on site It must be part of a ducted system and not used in a free air delivery application It must not be used as a make up air unit o This furnace may
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