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035-17468-001 Rev.  A (801)

Unitary Products Group

31

All CFM’s are shown at 0.5” w.c. external static pressure.
These units have variable speed motors that automatically
adjust to provide constant CFM from 0.0” to 0.6” w.c. static
pressure. From 0.6” to 1.0” static pressure, CFM is reduced
by 2% per 0.1” increase in static. Operation on duct systems
with greater than 1.0” w.c. external static pressure is not rec-
ommended.

NOTE: 

At some settings, LOW COOL and/or LOW HEAT air

flow may be lower that what is required to operate an airflow
switch on certain models of electronic air cleaners. Consult
the instructions for the electronic air cleaner for further
details.

Table 9: 

AIRFLOW DATA - UPFLOW MODELS

HIGH/LOW SPEED COOLING AND HEAT PUMP CFM

P1XUB12V05501
G9V06012UPB11

P1XUC16V07501
G9V08016UPC11

P1XUC20V09501
G9V10020UPC11

P1XUD20V11201

G9V12020UPD11

JUMPER SETTINGS

High

Low

High Low

High

Low

High

Low

COOL 

TAP

ADJ 

TAP 

1315

720

1655

930

2030

1090

2180

1210

A

B

1095

610

1555

855

1780

945

1760

970

B

B

1200

655

1510

830

1890

1000

2000

1100

A

A

1010

545

1440

790

1630

850

1600

910

B

A

1065

595

1375

755

1685

895

1780

990

A

C

870

500

1350

745

1555

830

1540

860

C

B

885

505

1280

700

1430

785

1410

820

B

C

655

450

1150

620

1310

740

1300

770

D

B

870

460

1230

670

1400

770

1400

800

C

A

610

445

1030

555

1220

665

1220

710

D

A

715

450

1120

600

1245

700

1230

740

C

C

545

450

915

495

1075

605

1060

660

D

C

HIGH/LOW HEAT CFM

P1XUB12V05501
G9V06012UPB11

P1XUC16V07501
G9V08016UPC11

P1XUC20V09501
G9V10020UPC11

P1XUD20V11201

G9V12020UPD11

JUMPER SETTINGS

High

Low

High Low

High

Low

High

Low

HEAT 

TAP

ADJ 

TAP 

1020

665

1635

1065

1940

1225

1870

1205

A

Any

925

610

1540

990

1745

1105

1715

1105

B

Any

850

555

1400

890

1595

1010

1590

1020

C

Any

785

515

1265

805

1475

930

1480

950

D

Any

Table 10: 

AIRFLOW DATA - DOWNFLOW/HORIZONTAL MODELS

 HIGH/LOW SPEED COOLING AND HEAT PUMP CFM

P1XDB12V07501

G9V08012DHB11

P1XDD20V11201

G9V12020DHD11

JUMPER SETTINGS

High

Low

High

Low

COOL TAP

ADJ TAP

1345

740

2230

1290

A

B

1120

620

1810

1025

B

B

1225

675

2100

1150

A

A

1020

560

1680

950

B

A

1100

605

1850

1045

A

C

880

490

1600

900

C

B

920

505

1500

840

B

C

660

450

1410

770

D

B

800

450

1510

825

C

A

600

420

1265

700

D

A

720

440

1320

740

C

C

545

420

1120

625

D

C

HEATING AIRFLOW

P1XDB12V07501

G9V08012DHB11

P1XDD20V11201

G9V12020DHD11

JUMPER SETTINGS

High

Low

High

Low

COOL TAP

ADJ TAP

1380

900

1925

1260

A

Any

1260

820

1750

1165

B

Any

1150

750

1600

1055

C

Any

1075

700

1475

985

D

Any

Summary of Contents for PxXD-G9V-DH series

Page 1: ...HORIZONTAL P XD V G9V DH 80 To 120 MBH Input 035 17468 001 Rev A 801 TABLE OF CONTENTS GENERAL INFORMATION 2 SPECIFIC UNIT INFORMATION 3 DUCTWORK 7 GAS PIPING 11 ELECTRICAL POWER CONNECTION 12 ELECTRI...

Page 2: ...n writing Also before installation the unit should be checked for screws or bolts which may have loos ened in transit There are no shipping or spacer brackets which need to be removed NOTES CAUTIONS W...

Page 3: ...dance with all national and local building safety codes and requirements or in the absence of local codes with the National Fuel Gas Code ANSI Z223 1 or CAN CGA B149 1 or 2 Installation Code latest ed...

Page 4: ...osi tion The furnace shall be located using these guidelines 1 Where a minimum amount of air intake vent piping and elbows will be required 2 As centralized with the air distribution system as possi b...

Page 5: ...ODELS P XU V G9V UH AFUE 1 LOW FIRE TEMP RISE F HIGH FIRE TEMP RISE F MAX OUTLET AIR TEMP F BLOWER TOTAL UNIT AMPS MAX OVER CURRENT PROTECT 2 MIN WIRE SIZE AWG 75 FT ONE WAY 2 INPU MBH H L OUTPUT MBH...

Page 6: ...OPERATING WT LBS INPU MBH H L OUTPUT MBH H L NOM CFM HP AMPS SIZE 80 52 75 48 1200 17 1 2 92 0 35 65 35 65 165 1 2 1 7 11 x 8 12 0 20 14 128 120 78 112 72 2000 24 1 2 92 0 40 70 40 70 170 1 4 4 11 x 1...

Page 7: ...talling the supply plenum On all installations without a coil a removable access panel is recommended in the outlet duct such that smoke or reflected light would be observable inside the casing to ind...

Page 8: ...ons Bottom Return Bottom return applications normally pull return air through a base platform or return air plenum Be sure the return plat form structure is suitable to support the weight of the furna...

Page 9: ...e into the filter rack and secure it with a sheet metal screw Refer to the unit rating plate for furnace model then see the dimensions page of this instruction for return air plenum dimensions Install...

Page 10: ...earance to the condensate trap and drain pipe A minimum of 8 clearance is required for this purpose NOTE See crawl space installation for suspending the fur nace in attic installations CRAWL SPACE INS...

Page 11: ...s tem by closing its individual external manual shutoff valve during any pressure testing of the gas supply piping system at pressures equal to or less than 1 2 psig 3 48 kpa The furnace and its indiv...

Page 12: ...equip ment ground wire must be connected to the power supply ground Remove the screws retaining the wiring box cover Route the power wiring through the opening in the unit into the junction box with a...

Page 13: ...ri ous accessories Refer to Figure 15 for connection details ELECTRONIC AIR CLEANER CONNECTION The junction box contains a clearly marked wire for connec tion to an electronic air cleaner This wire pr...

Page 14: ...ible from a swimming pool or a location where swimming pool chemicals might be stored Be sure the terminal assem bly follows the outdoor clearances listed in Table 3 for U S installations In Canada re...

Page 15: ...When selecting the location for combustion air vent termina tion the following should be considered 1 Comply with all clearance requirements as listed below 2 Termination should be positioned where ve...

Page 16: ...ation for Additional Clearance FIGURE 21 Vertical Termination OVERHANG 12 MINIMUM VENT MAINTAIN 12 CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL OR GRADE WHICHEVER IS GREATER 12 SEPARATION BETWEEN BO...

Page 17: ...brought into the furnace area from outdoors It is not directly ducted into the furnace A single properly sized pipe from the furnace vent connector to the outdoors must be provided For upflow models...

Page 18: ...ed where the equipment has clearances of at least 1 inch from the sides and back and 6 inches from the front of the appli ance The opening shall communicate through a vertical or horizontal duct to th...

Page 19: ...form to ASTM Stan dards D2564 PVC or D2235 ABS 5 The use of flexible connectors or no hub connectors in the vent system is not allowed NOTE If installing furnace at altitudes between 2000 4500 ft inta...

Page 20: ...assembly procedure for the vent piping is as follows 1 Cut piping to the proper length beginning at the furnace 2 Deburr the piping inside and outside 3 Chamfer the outer edges of the piping 4 Dry fi...

Page 21: ...in a downward position Be sure to maintain 12 clearance above any insulation flooring or other COMBUSTION AIR REQUIREMENTS The ventilated attic space from which the combustion air is taken must comply...

Page 22: ...iece of flexible drain tubing such as EPDM rubber Vinyl or PVC to the nipple 5 Loop the drain tubing to provide a trap 6 Connect the discharge end of the drain tube to the con densate disposal system...

Page 23: ...4 PVC or equiva lent pipe be field installed as drain pipe The condensate piping may be tied together with the air conditioning con densate drain if the air conditioning condensate drain line is trapp...

Page 24: ...ration can continue Pressure Switches This furnace is supplied with pressure switches which monitor the flow through the combustion air vent piping system These switches de energize the ignition contr...

Page 25: ...e to call for heat 3 System start up will occur as follows a The induced draft blower motor will start at high speed and wait for low pressure switch contacts to close then switch to low speed and the...

Page 26: ...1 cubic foot dial to make a revolution with only a 120 000 Btuh furnace running Using this information locate 26 seconds in the first column of Read across to the column headed 1 Cubic Foot where you...

Page 27: ...ndant P M solenoids as well as the HI terminal 4 Remove high adjustment seal screw to expose the 3 32 set screw Refer to Figure 36 5 To increase outlet pressure turn the 3 32 set screw clockwise To de...

Page 28: ...may be the same speed or a different speed To use the same speed tap for heating and cooling the heat terminal and cool terminal must be connected using a jumper wire and connected to the desired mot...

Page 29: ...Filter Rack 6 Pack 1BR0317 External Bottom or Horizontal Filter Rack Cabinet B 1BR0321 External Bottom Filter Rack Cabinet C 1BR0324 External Bottom or Horizontal Filter Rack Cabinet D 1NK0301 Condens...

Page 30: ...cooling air flow for 60 seconds with a 15 second coast to stop ADJUSTMENT OF FAN OFF CONTROL SETTINGS This furnace is equipped with a time on time off heating fan control The fan on is fixed at 30 se...

Page 31: ...1350 745 1555 830 1540 860 C B 885 505 1280 700 1430 785 1410 820 B C 655 450 1150 620 1310 740 1300 770 D B 870 460 1230 670 1400 770 1400 800 C A 610 445 1030 555 1220 665 1220 710 D A 715 450 1120...

Page 32: ...t is satisfied the inducer motor is reduced to low speed and the 2nd stage gas valve is de energized to 1st stage The circulator remains on high heat speed for 30 seconds then de energizes to low heat...

Page 33: ...LOW INDUCER LOW STAGE PRESSURE SWITCH HSI 1ST STAGE MAIN VALVE FLAME SENSE LOW CIRCULATOR HEAT SPEED 1ST STAGE LOW PRESSURE SWITCH CLOSE RECOGNITION HSI WARM UP 17 SEC IGNITION ACTIVATION PERIOD 4 SE...

Page 34: ...be sure the filter completely covers the cabinet opening and is secured in place by the wire retainer LUBRICATION Blower and ventor motors in these furnaces are permanently lubricated and do not requi...

Page 35: ...le shooting 1 Check to see that the power to the furnace and the igni tion control module is ON 2 The manual shutoff valves in the gas line to the furnace must be open 3 Make sure all wiring connectio...

Page 36: ...100K ohms by connecting one meter lead to the motor lead and the other to an unpainted portion of the motor housing If any one of the leads fails this test THE MOTOR IS DEFECTIVE AND MUST BE REPLACED...

Page 37: ...ndicate failure status Flash sequence codes 1 thru 4 are as follows LED will turn on for 1 4 second and off for 1 4 second This pattern will be repeated the number of times equal to the code For exam...

Page 38: ...g the call for heat before locking out This may be caused by low gas pressure faulty gas valve faulty hot surface igniter reversed line polarity or burner problem 8 FLASH This fault is indicated if th...

Page 39: ...LACED IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE RATING OF AT LEAST 22 1 F 105 HAVING A TEMPERATURE RATING OF AT LEAST 221 C CONNECTIONS SUITABLE FOR COPPER CONDUCTORS ONLY ALL REPL...

Page 40: ...T BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE RATING OF AT LEAST 22 1 F 105 HAVING A TEMPERATURE RATING OF AT LEAST 221 C CONNECTIONS SUITABLE FOR COPPER CONDUCTORS ONLY ALL REPLACEMENT COMP...

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