Page 2 - Read the entire instruction manual before starting the; TABLE OF CONTENTS
Single-Stage Deluxe Induced-Combustion 4-Way Multipoise Furnace Installation, Start-up, Operating, and Service and Maintenance Instructions Series 120/C NOTE: Read the entire instruction manual before starting the installation. This symbol → indicates a change since the last issue. → Portions of the...
Page 3 - SAFETY CONSIDERATIONS; Fig. 1—Dimensional Drawing
SAFETY CONSIDERATIONS FIRE, EXPLOSION, ELECTRICAL SHOCK, ANDCARBON MONOXIDE POISONING HAZARDFailure to follow this warning could result in dangerousoperation, serious injury, death, or property damage.Improper installation, adjustment, alteration, service, mainte-nance, or use can cause carbon monox...
Page 5 - Fig. 2—Clearances to Combustibles; INSTALLATION; MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION; POUR LA POSITION COURANT DESCENDANT:
→ Fig. 2—Clearances to Combustibles A04123 MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION DISTANCE MINIMALE EN POUCES AUX CONSTRUCTIONS COMBUSTIBLES INSTALLATION 327590-101 REV. C Ø * Clearance arrowsdo not change withfurnace orientation. BO T T O M D E SSO U S 0" 3" 0" 0" 1...
Page 6 - Fig. 3—Return Air Temperature
Step 2—General Installation • US: Current edition of the NFGC and the NFPA 90B. Forcopies, contact the National Fire Protection Association Inc.,Batterymarch Park, Quincy, MA 02269; (www.NFPA.org) orfor only the NFGC, contact the American Gas Association, 400N. Capitol Street, N.W., Washington, DC 2...
Page 8 - Fig. 6—Prohibit Installation on Back
PERSONAL INJURY AND/OR PROPERTY DAMAGEHAZARDImproper use or installation of this furnace may causepremature furnace component failure.This gas furnace may be used for heating buildings underconstruction provided that:-The furnace is permanently installed with all electrical wiring, piping, venting a...
Page 10 - Dilution for Outdoors; ACH; Dilution from Indoors
The Known Air Infiltration Rate Method shall be used, if theinfiltration rate is known to be: 1. Less than 0.40 ACH and 2. Equal to or greater than 0.10 ACH Infiltration rates greater than 0.60 ACH shall not be used. Theminimum required volume of the space varies with the number ofACH and shall be d...
Page 11 - Fig. 9—Removing Bottom Closure Panel
free area of at least 1-in. 2 /4,000 Btuh of total input rating for all gas appliances in the space. 3. In spaces that use the Indoor Combustion Air Method, infiltration should be adequate to provide air for combustion,permanent ventilation and dilution of flue gases. However, inbuildings with unusu...
Page 12 - Fig. 11—Floor and Plenum Opening Dimensions
4. If downflow subbase, KGASB is used, install as shown in Fig. 12. If Coil Assembly Part No. CD5 or CK5 or Coil Box PartNo. KCAKC is used, install as shown in Fig. 13. NOTE: It is recommended that the perforated supply-air duct flanges be completely folded over or removed from furnace wheninstallin...
Page 15 - Fig. 15—Horizontal Unit Suspension; TYPICAL FOR 2 SUPPORTS
Upflow and Horizontal Furnaces Connect supply-air duct to flanges on furnace supply-air outlet.Bend flange upward to 90° with wide duct pliers. (See Fig. 14.)The supply-air duct must be connected to ONLY the furnacesupply-outlet-air duct flanges or air conditioning coil casing (whenused). DO NOT cut...
Page 18 - FURNACE
GAS PIPING FIRE OR EXPLOSION HAZARDFailure to follow this warning could result in personal injury,death, and/or property damage.Never purge a gas line into a combustion chamber. Never testfor gas leaks with an open flame. Use a commerciallyavailable soap solution made specifically for the detection ...
Page 20 - ELECTRICAL CONNECTIONS; Table 6—Maximum Capacity of Pipe*
Piping should be pressure and leak tested in accordance withNFGC in the United States or NSCNGPIC in Canada, local, andnational plumbing and gas codes before the furnace has beenconnected. After all connections have been made, purge lines andcheck for leakage at furnace prior to operating furnace. I...
Page 21 - Table 7—Electrical Data
and fuse specifications. A readily accessible means of electricaldisconnect must be located within sight of the furnace. NOTE: Proper polarity must be maintained for 115-v wiring. If polarity is incorrect, control LED status indicator light will flashrapidly and furnace will NOT operate. J-BOX RELOC...
Page 22 - Furnace Casing
3. Fasten the electrical box to casing by driving two field- supplied screws from inside electrical box into casing steel. 4. Remove and save two screws holding J-Box. (See Fig. 22.) 5. Pull furnace power wires out of 1/2-inch diameter hole in J-Box. Do not loosen wires from strain-relief wire-tie o...
Page 23 - Fig. 24—Furnace Control
Fig. 24—Furnace Control A02142 BLW NUETRAL STA TUS CODE LED SEC-2 SEC-1 EAC-2 L2 FUSE 3-AMP 0.5 AMP@24VAC HUM TEST/TWIN Y1 DHUM G COM W/W1 Y/Y2 R 24V PLT 120 180 90 150 BLOWER OFF-DELAY PLT 1 COOL HEA T SPARE-1 SPARE-2 FAN EAC-1 1-AMP@ 115VAC PR-1 L1 PL2 1 24-V THERMOSTAT TERMINALS 3-AMP FUSE LED OP...
Page 26 - Fig. 30–Dual Fuel Thermostat with Single-Stage; Fig. 31–Dual Fuel Thermostat with Single-Stage; HUMIDFIER; Furnace and Two-Speed Air Conditioner
HUMIDFIER (24VAC) See notes 1, 2, 4, 11, 12, and 13 on the page following these figures. A04219 Fig. 30–Dual Fuel Thermostat with Single-Stage Furnace and Single-Speed Heat Pump HUMIDFIER (24VAC) See notes 1, 2, 3, 4, 11, 12, and 14 on the page following these figures. A04220 Fig. 31–Dual Fuel Therm...
Page 27 - controlled internally by the Thermidistat/Dual Fuel Thermostat.
Notes For Figures 26-32 1. Heat pump MUST have a high pressure switch for dual fuel applications. 2. Refer to outdoor equipment Installation Instructions for additional information and setup procedure. 3. Outdoor Air Temperature Sensor must be attached in all dual fuel applications. 4. Dip switch No...
Page 28 - INTERNAL AREA OF CHIMNEY; to
Canada (and U.S.A.)-This furnace is permitted to be vented intoa clay tile-lined masonry chimney that is exposed to the outdoorsbelow the roof line, provided: 1. Vent connector is Type-B double-wall, and 2. This furnace is common vented with at least 1 draft hood- equipped appliance, and 3. The comb...
Page 29 - Fig. 33—Chimney Inspection Chart; CHIMNEY INSPECTION CHART
→ Fig. 33—Chimney Inspection Chart A03206 CHIMNEY INSPECTION CHART For additional requirements refer to the National Fuel Gas Code NFPA 54/ANSI Z223.1 and ANSI/NFPA 211 Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances in the U.S.A. or to the Canadian installation Code CSA-B149.1 in Can...
Page 33 - used external to the furnace.; Fig. 47—Using Tin Snips to Cut Tie Points
Fig. 46—Horizontal Right Application-Vent Elbow Left A02068 SEE NOTES: 1,2,4,5,7,8,9 Venting Notes for Figures 34-46 1. For common vent, vent connector sizing and vent material: United States--use the NFGCCanada--use the NSCNGPIC 2. Immediately increase to 5-inch or 6-inch vent connector outside fur...
Page 34 - Step 1—General; result in rapid flashing LED and no furnace operation.; Step 2—Start-Up Procedures; Purge gas lines after all connections have been made.; Fig. 48—Rounded End of Knockout
START-UP, ADJUSTMENT, AND SAFETY CHECK Step 1—General FIRE HAZARDFailure to follow this warning could result in a fire and leadto property damage, personal injury or death.This furnace is equipped with manual reset limit switches inthe gas control area. The switches open and shut off power tothe gas...
Page 35 - Step 3—Adjustments
ELECTRICAL SHOCK HAZARDFailure to follow this warning could result in electrical shock,personal injury, or death.Blower access door switch opens 115-v power to control. Nocomponent operation can occur unless switch is closed.Caution must be taken when manually closing this switch forservice purposes...
Page 36 - Fig. 52—Gas Control Valve
must use Table 12 (21,000 Btuh/Burner). See input listed onrating plate. a. Obtain average yearly gas heat value (at installed altitude) from local gas supplier. b. Obtain average yearly gas specific gravity from local gas supplier. c. Find installation altitude in Table 11 or 12. d. Find closest na...
Page 37 - Step 4—Check Safety Controls; Table 9—Speed Selection
a. Place thermometers in return and supply ducts as close to furnace as possible. Be sure thermometers do not seeradiant heat from heat exchangers. Radiant heat affectstemperature rise readings. This practice is particularlyimportant with straight-run ducts. b. When thermometer readings stabilize, s...
Page 38 - Step 5—Checklist; Fig. 54—Amp Draw Check With Ammeter
c. Unblock return air to permit normal circulation. d. Burners will re-light when furnace cools down. 2. Check draft safeguard switch. The purpose of this control is to cause the safe shutdown of thefurnace during certain blocked vent conditions. a. Verify vent pipe is cool to the touch. b. Disconne...
Page 39 - Table 11—Orifice Size* and Manifold Pressure For Gas Input Rate; and
Table 11—Orifice Size* and Manifold Pressure For Gas Input Rate (Tabulated Data Based On 22,000 Btuh Per Burner, Derated 4 Percent For Each 1000 Ft Above Sea Level) ALTITUDE RANGE (FT) AVG GAS HEAT VALUE (BTU/CU FT) SPECIFIC GRAVITY OF NATURAL GAS 0.58 0.60 0.62 0.64 Orifice No. Manifold Pressure Or...
Page 41 - GENERAL; Only
SERVICE AND MAINTENANCE PROCEDURES FIRE, INJURY, OR DEATH HAZARDFailure to follow this warning could result in possible damageto this equipment, serious personal injury, or death.The ability to properly perform maintenance on this equip-ment requires certain knowledge, mechanical skills, tools, ande...
Page 42 - Table 12—Orifice Size* and Manifold Pressure For Gas Input Rate
d. BRIEFLY remove insulated terminal wire from the draft safeguard (DSS) switch until LED goes out, then reconnectit. NOTE: If wire to LS or DSS is disconnected longer than 4 sec, main blower starts, and retrieval request is ignored. 2. When above items have been completed, the LED flashes status co...
Page 44 - Step 2—Care and Maintenance; or other paper products.; Fig. 55—Service Label; LED CODE; SERVICE; COMPONENT TEST
Step 2—Care and Maintenance FIRE OR EXPLOSION HAZARDFailure to follow this warning could result in corrosion of theheat exchanger, fire, personal injury, or death.Never store anything on, near, or in contact with the furnace,such as:1. Spray or aerosol cans, rags, brooms, dust mops, vacuum cleaners,...
Page 45 - Media cabinet filter procedures :
CUT HAZARDFailure to follow this caution may result in personal injury.Sheet metal parts may have sharp edges or burrs. Use care andwear appropriate protective clothing, safety glasses andgloves when handling parts and servicing furnaces. The minimum maintenance on this furnace is as follows: 1. Che...
Page 48 - Step 3—Sequence of Operation; Fig. 59—Cleaning Heat Exchanger Cell
b. Insert the twisted wire end of brush into end of spring cable, and crimp tight with crimping tool or crimp bystriking with ball-peen hammer. TIGHTNESS IS VERYIMPORTANT. NOTE: The materials needed in item 9 can usually be purchased at local hardware stores. (1.) Attach variable-speed, reversible d...
Page 49 - a. Inducer Prepurge Period- As the inducer motor IDM; The thermostat “calls for cooling.”
90-second period, after which the LED will be ON continuous, aslong as no faults are detected. After the 90-second period, thefurnace will respond to the thermostat normally. The blower door must be installed for power to be conductedthrough the blower door interlock switch ILK to the furnacecontrol...
Page 50 - Continuous Blower Mode; the blower motor; Step 4—Wiring Diagrams
after 20 minutes, the furnace control CPU will drop theblower speed back to HEAT speed. This alternating 10-minute cycle will continue as long as there is a call forcooling. c. When the ″ call for cooling ″ is satisfied and there is a demand for dehumidification, the cooling blower-off delayis decre...
Page 51 - OUBLESHOO
A02106a Fig. 60—Troubleshooting Guide Is LED status light on? Is LED status light b linking r apidly without a pause? Is LED status light b linking ON/OFF slo wly with a combination of shor t and long flashes? Deter mine status code . The status code is a 2 digit n umber with the first digit deter m...