Page 2 - This unit must not be used as a “construction
2 WARNING If the information in these instructions isnot followed exactly, a fire or explosionmay result causing property damage,personal injury or loss of life.– Do not store or use gasoline or other flammable vapors and liquids in thevicinity of this or any other appliance. – What to do if you sme...
Page 3 - Counterflow Installation over a combustible floor.; ADDITIONAL LOCATION; CONSIDERATIONS; II. General Information; WARNING; ADDITIONAL SAFETY CONSIDERATIONS
3 level. A tight seal should be made between the furnace base and floor by using a silicone rubber caulking compound or cement grout. • Counterflow Installation over a combustible floor. If installation over a combustible floor becomes neces- sary, use an accessory subbase as shown on the Specificat...
Page 4 - III. Combustion and Ventilation Air; AIR REQUIREMENTS; National Fuel Gas Code; (c) In addition to air needed for combustion, process air shall be
4 TRANSPORTATION DAMAGE Check the furnace for any shipping damage. If damage isfound, contact the company where the furnace was pur-chased.While checking for transportation damage, remove allpackaging material and dispose or recycle according tolocal codes. THERMOSTAT REQUIREMENTS The two stage furn...
Page 6 - Figure 5; When directly communicating with the outdoors, the single; Special Conditions Created by Mechanical Exhausting or; Operation of exhaust fans, ventilation systems, clothes dryers, or; MINIMUM VENT DIAMETER
6 Furnace Water Heater Opening Chimn ey or Gas Vent NOTE: The single opening must havea free area of not less than one square inch per 3000 BTU of the total input rating of all equip-ment in the enclosure, but not less than the sum of the areas of all ventconnectors in the confined space. AlternateO...
Page 7 - Vent; Section VI, Electrical Wiring
7 (d) Following the lighting instructions, place the furnace being inspected in operation. Adjust thermostat so appliance will operate continuously. (e) Test for spillage at the draft hood relief opening after 5 minutes of main burner operation; use the flame of a match or candle. (f) After it has b...
Page 8 - V. Gas Supply and Piping; GENERAL; CAUTION; Adjusting the minimum supply pressure below the; High Altitude Derate; derate the furnace by adjusting the manifold pres-; Propane Gas Conversion
8 WARNING To prevent death or serious illness tobuilding occupants due to flue productsleaking into the building, proper installationof gaskets and screws is essential forproviding a gas tight seal between thepartition panel and the induced draft blower. V. Gas Supply and Piping GENERAL The furnace ...
Page 9 - GAS PIPING CONNECTIONS; General; Figure 8; Upflow Installations; Figure 9
9 GAS PIPING CONNECTIONS General CAUTION To avoid possible unsatisfactory operationor equipment damage due to underfiring ofe q u i p m e n t , u s e t h e p r o p e r s i z e o fnatural/propane gas piping needed whenrunning pipe from the meter/tank to thefurnace. When sizing a trunk line, be sure t...
Page 10 - Gas Inlet Through Furnace Bottom Side; Straight pipe to reach the exterior of the furnace. See; Gas Inlet Through Furnace Left Side; Counterflow Installations; , the installer must supply a straight pipe to reach; Gas Inlet Through Left Side
10 A ground joint union, drip leg, and manual shutoff valvemust also be supplied by the installer. In some cases, theinstaller may also need to supply a transition piece from 1/2"to another pipe size. Figure 10 Gas Inlet Through Furnace Bottom Side (Upflow) When the gas piping enters through the...
Page 11 - Gas Inlet Through Right Side (Counterflow); Gas Piping Checks; Propane Gas Tanks and Piping
11 When the gas piping enters through the right side of thefurnace, the installer must supply the following fitings (start-ing at the gas valve): • 90 degree elbow. • Close nipple. • 90 degree elbow. • Straight pipe to reach exterior of furnace (Figure 15). A ground joint union, drip leg, and manual...
Page 12 - Refer to Figure 16 for typical propane gas installations.; Typical Propane Gas Installations; PROPANE GAS PIPING CHARTS; Vl. Electrical Wiring; THERMOSTAT REQUIREMENTS; NOTE; Typical Field Wiring
12 Refer to Figure 16 for typical propane gas installations. 200 PSIGMaximum 5 to 15 PSIG(20 PSIG Max.) Continuous 11" W.C. Second StageRegulator First StageRegulator Figure 16 Typical Propane Gas Installations PROPANE GAS PIPING CHARTS Sizing Between First and Second Stage RegulatorMaximum Prop...
Page 13 - ground wire; Heating Fan; Integrated Ignition Control
13 A 40 VA transformer and an integrated electronic controlare built into the furnace to allow use with most coolingequipment. CAUTION To avoid the risk of electrical shock, wiringto the unit must be properly polarized andgrounded. To provide more reliable sensing of flame, the ground wire must run ...
Page 14 - AIR CIRCULATION BLOWER TIMING; Switches; Accessory Load Specification; Control Module; Accessory Operation; Accessory Operation:; The furnace control module ener-; VlI. Circulating Air and Filters
14 AIR CIRCULATION BLOWER TIMING All items in this section refer to the air circulation blower, notto the induced draft blower. The timing sequence for theinduced draft blower is not adjustable.When a call for cooling occurs, the air circulation blower willcome on. It will remain on for 45 seconds a...
Page 15 - UPRIGHT INSTALLATIONS; Possible Upright Upflow; Possible Upright Counterflow; HORIZONTAL INSTALLATIONS; VIII. Sequence of Operation; Refer to Timing Charts for sequencing.
15 When the furnace is heating, the temperature of the returnair entering the furnace must be between 55°F and 100°F.When a furnace is installed so that supply ducts carry aircirculated by furnace to areas outside the space containingthe furnace, the return air shall also be handled by a ductsealed ...
Page 16 - balance; GENERAL OPERATION; Right To Left Installation
16 9. The furnace is now operating on the specified stage called out by the two stage thermostat. 10. If the two stage thermostat changes the call from low heat to high heat, the control will immediately switch the induced draft blower gas valve, and air circulating speed to their high stage setting...
Page 17 - Rollout Switch Relocation; BURNER BOX; Auxiliary Limit Control
17 5. For horizontal-left installations, a hole is provided near the igniter end of the manifold assembly. Insert the rollout protection device into this hole and attach with screws removed in Step 3. Figure 30 Rollout Switch Relocation (Upflow) Figure 31 Rollout Switch Relocation (Counterflow Insta...
Page 20 - Indoor Fan
20 Timing Chart for Normal Cooling Operation Integrated Ignition Control Diagnostic Signal Chart Seconds 0 5 0 45 OnOff OnOff OnOff Indoor Fan Outdoor Fan And Compressor Thermostat Light Signal For Corrective Action Refer to Abnormal Operation Number Continuous Light 1 Internal Lockout 1 Flash 2 Ext...
Page 21 - Diagnostic Signal Chart
21 WARNING To prevent death, personal injury orproperty damage due to fire, follow thesedirections for the auxiliary limit control. Ifthe auxiliary limit control opens, it may bereset one time only. SERVICER’S NOTE: If it becomes necessary to slide the air circulation blower assembly out of the furn...
Page 22 - Gas Pressure; With Power and Gas Off:; Gas Manifold Pressure Measurement and Adjustment
22 4. Remove the door on the front of the furnace.5. This furnace is equipped with an ignition device to automatically light the burners. Do not try to light burners by hand. 6. Turn the gas control knob clockwise to the Off position (Figure 33). The knob should turn easily. Do not use excessive for...
Page 23 - Gas Adjustments; Natural Gas; Gas Input Rate measurement (Natural Gas Only)
23 5. Repeat #1 through #3 on high stage (2nd stage).6. Turn ON gas and relight appliances turned off in step 1. Ensure all the appliances are functioning properly and that all pilot burners are operating. TEMPERATURE RISE Air temperature rise is the temperature difference betweensupply and return a...
Page 24 - ANNUAL INSPECTION; High Limit Control; HIGH LIMIT CONTROL CHECK; FURNACE SHUTDOWN
24 X. Maintenance WARNING To prevent death or personal injury due to electric shock, disconnect electrical power before performing any maintenance. ANNUAL INSPECTION The furnace should be inspected by a qualified installer, or service agency at least once per year. This check should be performed at ...
Page 25 - AIR FILTER - UPFLOW FURNACES; Filter Removal; AIR FILTER - COUNTERFLOW FURNACES
25 AIR FILTER - UPFLOW FURNACES To remove the external upflow filter from the external filterrack, disconnect electrical power to the furnace and followthe directions provided with the external filter rack kit. NOTE: If using Media Air Cleaner MAC1 or Electronic Air Cleaner EAC5, follow the directio...
Page 26 - FILTER; Filter Rack Mounted On; AIR CIRCULATING BLOWER MOTOR; Burner Flame
26 FI LTE R FILTER ACCESS DOOR RETURN DUCT FI LTE R Figure 38 Filter Rack Mounted On Counterflow Furnace Installation AIR CIRCULATING BLOWER MOTOR The air circulating blower motor bearings are permanentlylubricated. No further lubrication is required. INDUCED DRAFT BLOWER MOTOR The induced draft blo...