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PG80MSU: Installation, Start-up, Operating and Service and Maintenance Instructions

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

3

Improper  installation,  adjustment,  alteration,  service,  maintenance,  or

use can cause explosion, fire, electrical shock, or other conditions which

may  cause  death,  personal  injury,  or  property  damage.  Consult  a

qualified  installer,  service  agency,  or  your  distributor  or  branch  for

information  or  assistance.  The  qualified  installer  or  agency  must  use

factory-authorized  kits  or  accessories  when  modifying  this  product.

Refer to the individual instructions packaged with the kits or accessories

when installing.
Follow  all  safety  codes. Wear  safety  glasses,  protective  clothing,  and

work gloves. Have a fire extinguisher available. Read these instructions

thoroughly and follow all warnings or cautions include in literature and

attached to the unit. Consult local building codes, the current editions of

the current edition of National Fuel Gas Code (NFGC) NFPA 54/ANSI

Z223.1 and the current edition of National Electrical Code (NEC) NFPA

70.

Recognize safety information. This is the safety-alert symbol  . When

you see this symbol on the unit and in instructions or manuals, be alert to

the potential for personal injury.
Understand  the  signal  words  DANGER, WARNING,  and  CAUTION.

These words are used with the safety-alert symbol. DANGER identifies

the most serious hazards which will result in severe personal injury or

death.  WARNING  signifies  hazards  which  could  result  in  personal

injury  or  death.  CAUTION  is  used  to  identify  unsafe  practices  which

may  result  in  minor  personal  injury  or  product  and  property  damage.

NOTE  is  used  to  highlight  suggestions  which  will  result  in  enhanced

installation, reliability, or operation.

1. Use only with type of gas approved for this furnace. Refer to the

furnace rating plate.

2. Install this furnace only in a location and position as specified in the

“Location” section of these instructions.

3. Provide  adequate  combustion  and  ventilation  air  to  the  furnace

space as specified in “Air for Combustion and Ventilation” section.

4. Combustion  products  must  be  discharged  outdoors.  Connect  this

furnace  to  an  approved  vent  system  only,  as  specified  in  the

“Venting” section of these instructions. 

5. Never test for gas leaks with an open flame. Use a commercially

available soap solution made specifically for the detection of leaks

to check all connections, as specified in the “Gas Piping” section.

6. Always  install  furnace  to  operate  within  the  furnace’s  intended

temperature-rise  range  with  a  duct  system which  has  an  external

static  pressure  within  the  allowable  range,  as  specified  in  the

“Start-Up, Adjustments,  and  Safety  Check”  section.  See  furnace

rating plate.

7. When a furnace is installed so that supply ducts carry air circulated

by the furnace to areas outside the space containing the furnace, the

return  air  shall  also  be  handled  by  duct(s)  sealed  to  the  furnace

casing  and  terminating  outside  the  space  containing  the  furnace.

See “Air Ducts” section.

8. A gas-fired furnace for installation in a residential garage must be

installed as specified in the warning box in the “Location” section,

see 

Fig. 6

.

9. The  furnace  is  not  permitted  to  be  used  for  heating  of  buildings

under construction.

10. These  Multipoise  Gas-Fired  Furnaces  are  CSA  (formerly A.G.A.

and C.G.A). design-certified for use with natural gas (see furnace

rating  plate)  and  for  installation  in  alcoves,  attics,  basements,

closets,  utility  rooms,  crawlspaces,  and  garages.  The  furnace  is

factory-shipped for use with natural gas and cannot be converted to

propane gas.

11. See 

Fig. 2

 for required clearances to combustible construction.

12. Maintain a 1-in. (25 mm) clearance from combustible materials to

supply  air  ductwork  for  a  distance  of  36  inches  (914  mm)

horizontally from the furnace. See current edition of NFPA 90B or

local code for further requirements.

13. These furnaces SHALL NOT be installed directly on carpeting, tile,

or  any  other  combustible  material  other  than  wood  flooring.  In

downflow installations, factory accessory floor base MUST be used

when installed on combustible materials and wood flooring. Special

base is not required when this furnace is installed on manufacturer’s

approved coil assembly or a manufacturer’s coil casing box is used.

See 

Fig. 2

 for clearance to combustible construction.

CAUTION

!

FURNACE RELIABILITY HAZARD

Improper  installation  or  misapplication  of  furnace  may  require

excessive servicing or cause premature component failure. 
Application  of  this  furnace  should  be  indoors  with  special  attention

given to vent sizing and material, gas input rate, air temperature rise,

unit leveling, and unit sizing.

WARNING

!

FIRE, INJURY, OR DEATH HAZARD

Failure to follow this warning could result in property damage, personal

injury, or death.

Do not bypass any of the safety controls in the furnace, including but

not limited to the main limit switch, rollout or burner thermal switch,

and pressure switch/pressure transducer.

WARNING

!

PERSONAL INJURY AND PROPERTY DAMAGE 

HAZARD

Failure to follow this warning could result in property damage, personal

injury, or death.

For  continued performance,  reliability,  and  safety,  the only  approved

accessories and replacement parts are those specified by the equipment

manufacturer.  The  use  of  non-manufacturer  approved  parts  and

accessories could invalidate the equipment limited warranty and result

in  fire  risk,  equipment  malfunction,  and  failure.  Please  review

manufacturer's  instructions  and  replacement  part  catalogs  available

from your equipment supplier

CAUTION

!

CUT HAZARD

Failure to follow this caution may result in personal injury. 
Sheet metal parts may have sharp edges or burrs. Use care and wear

appropriate  protective  clothing,  safety  glasses  and  gloves  when

handling parts and servicing furnaces.

Summary of Contents for PG80MSU

Page 1: ...NFORMATION GUIDE 40 MODEL NOMENCLATURE 40 To learn more about this appliance and installation via a mobile device go to https www payne com NFC or use the QR code below To access airflow tables or tro...

Page 2: ...se carbon monoxide poisoning explosion fire electrical shock or other conditions which may cause personal injury or property damage Consult a qualified service agency local gas supplier or your distri...

Page 3: ...ply ducts carry air circulated by the furnace to areas outside the space containing the furnace the return air shall also be handled by duct s sealed to the furnace casing and terminating outside the...

Page 4: ...db Failure to follow these return air temperature limits may affect reliability of heat exchangers motors and controls see Fig 4 For accessory installation details refer to the applicable instruction...

Page 5: ...city firmly touch a clean unpainted metal surface of the furnace again before touching control or wires 5 Use this procedure for installed and uninstalled ungrounded furnaces 6 Before removing a new c...

Page 6: ...ut rating for all gas appliances installed in the space Spaces having less than 50 cubic feet per 1 000 BTUh require the OUTDOOR COMBUSTION AIR METHOD Spaces having at least 50 cubic feet per 1 000 BT...

Page 7: ...ss volume than 50 cubic feet per 1 000 BTUh of the maximum input ratings for all gas appliances installed in the space and 2 The air infiltration rate is not known to be less than 0 40 air changes per...

Page 8: ...ings with unusually tight construction additional air MUST be provided using the methods described in the Outdoor Combustion Air Method section Unusually tight construction is defined as construction...

Page 9: ...own in Fig 13 NOTE It is required that the perforated supply air duct flanges be completely folded over or removed from furnace when installing the furnace on a factory supplied cased coil or coil box...

Page 10: ...Protection Provide a minimum 17 3 4 in x 22 in 451 mm x 559 mm piece of sheet metal for flame roll out protection in front of burner area for furnaces closer than 12 inches 305 mm above the combustibl...

Page 11: ...n a 1 in 25 mm clearance from combustible materials to supply air ductwork for a distance of 36 in 914 mm horizontally from the furnace See NFPA 90B or local code for further requirements Ductwork Aco...

Page 12: ...GC Installations must be made in accordance with all authorities having jurisdiction If possible the gas supply line should be a separate line running directly from meter to furnace NOTE In the state...

Page 13: ...and downstream of manual equipment shutoff valve A02035 Fig 22 Typical Gas Pipe Arrangement Piping should be pressure and leak tested in accordance with NFGC in the United States local and national pl...

Page 14: ...in Step 1 5 Route J Box wires within furnace away from sharp edges rotating parts and hot surfaces WARNING ELECTRICAL SHOCK AND FIRE HAZARD Failure to follow this warning could result in personal inju...

Page 15: ...ket BX Cable Installation in Furnace J Box 1 Remove cover from J Box 2 Route BX cable into 7 8 inch diameter hole in J Box 3 Secure BX cable to J Box bracket with connectors approved for the type of c...

Page 16: ...sted or draft hood equipped appliances in accordance with the NFGC the local building codes and furnace and vent manufacturers instructions The following information and warning must be considered in...

Page 17: ...in operation Seal any unused openings in venting system Inspect the venting system for proper size and horizontal pitch as required in the current edition of National Fuel Gas Code ANSI Z223 1 NFPA 5...

Page 18: ...condensation and corrosion in the venting system Do not use vent dampers on appliances common vented with this furnace Additional Venting Requirements A 4 101 mm round vent elbow is supplied with the...

Page 19: ...t connector is required refer to Note 1 above 3 Side outlet vent for upflow and downflow installations must use Type B vent immediately after exiting the furnace except when factory authorized Downflo...

Page 20: ...0 935 875 815 750 690 620 570 520 470 6 1050 995 935 880 820 755 700 645 595 550 7 1130 1075 1020 970 915 855 800 745 690 645 8 1200 1150 1100 1050 1000 945 890 840 785 735 9 1285 1240 1190 1145 1095...

Page 21: ...315 175 3 1035 935 830 745 640 550 460 365 235 140 4 1095 1000 900 815 725 630 545 455 360 240 5 1205 1125 1035 945 870 780 695 620 540 455 6 1290 1210 1125 1040 965 890 805 725 645 570 7 1385 1310 1...

Page 22: ...ct Super Plug available from distributor replacement component for the control board to copy the correct model program onto the new board Further details and instructions for these programming methods...

Page 23: ...Service and Maintenance Instructions Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations 23 A221015 Fig 34 3 Digit Display Flow Char...

Page 24: ...to the gas valve if a flame rollout or overheating condition occurs in the gas control area DO NOT bypass the switches Correct inadequate combustion air supply problem before resetting the switches CA...

Page 25: ...e unit rating plate For installation above 2 000 ft 610 M multiply the input on the rating plate by the derate multiplier in Table 14 for the correct input rate A180238 Fig 37 Orifice Hole WARNING FIR...

Page 26: ...door switch f Set thermostat to call for heat g Remove regulator seal cap and turn regulator adjusting screw counterclockwise out to decrease input rate of clockwise in to increase input rate h Instal...

Page 27: ...2 6 2 7 2 8 2 9 850 2 4 2 5 2 6 2 7 to 875 2 3 2 4 2 5 2 5 900 2 2 2 3 2 3 2 4 5000 925 2 1 2 1 2 2 2 3 1524 950 2 0 2 0 2 1 2 2 975 1 9 1 9 2 0 2 0 1000 1 8 1 8 1 9 1 9 U S A Only 725 3 2 3 3 3 4 3...

Page 28: ...U S A Only 725 2 9 3 0 3 1 3 1 750 2 7 2 8 2 9 3 0 5001 775 2 5 2 6 2 7 2 8 1524 800 2 4 2 4 2 5 2 6 825 2 2 2 3 2 4 2 5 to 850 2 1 2 2 2 2 2 3 875 2 0 2 0 2 1 2 2 5400 900 1 9 1 9 2 0 2 1 1646 925 1...

Page 29: ...failure If limit control does not function during this test cause must be determined and corrected a Run furnace for at least 5 minutes b Gradually block off return air with a piece of cardboard or sh...

Page 30: ...es proceed with the following NOTE NO thermostat signal may be present at control and all blower OFF delays must be completed a Leave 115 V power to furnace turned on b Remove outer access door c Remo...

Page 31: ...d dirt and grease from blower wheel and motor annually The inducer and blower motors are pre lubricated and require no additional lubrication These motors can be identified by the absence of oil ports...

Page 32: ...eel wool 0000 grade Do not use sand paper or emery cloth To reinstall igniter and flame sensor 1 Install the Hot Surface Igniter HSI and bracket with igniter gasket into burner assembly 2 Install flam...

Page 33: ...end of spring cable end opposite brush 2 Insert brush end of cable into the outlet opening of cell and slowly rotate with drill DO NOT force cable Gradually insert cable into upper pass of cell see Fi...

Page 34: ...iod the control CPU will open the gas valve relay GVR de energizing the gas valve solenoid GV The control CPU will repeat the ignition sequence for up to three more Trials for Ignition before going to...

Page 35: ...er motor BLWM operation 4 Heat pump When installed with a heat pump the furnace control automatically changes the timing sequence to avoid long blower off times during demand defrost cycles Whenever W...

Page 36: ...lation Start up Operating and Service and Maintenance Instructions Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations 36 TROUBLESHO...

Page 37: ...U Installation Start up Operating and Service and Maintenance Instructions Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations 37 A2...

Page 38: ...Start up Operating and Service and Maintenance Instructions Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations 38 A221105 Fig 40 T...

Page 39: ...re only furnace is running Firing rate heat content btu cu ft X size of the dial cu ft rev X of rev per 60 sec rev sec X 3600 sec hr Example 1050 btu cu ft X 0 5 cu f t rev X 2 revs 60sec X 3600 sec h...

Page 40: ...ll Cell panel Inducer Group Housing assembly Transducer Inducer motor Inducer wheel TO OBTAIN INFORMATION ON PARTS Consult your installing dealer or a licensed Heating and Air Conditioning company of...

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