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The furnace must be isolated from the gas supply piping
system by closing its individual external manual shutoff valve
during any pressure testing of the gas supply piping system at
test pressures equal to or less than 1/2 psig (3.48 kPa).

CAUTION:  Never apply a pipe wrench to the body of the

combination automatic gas valve. A wrench must be
placed on the projection or wrench boss of the valve when
installing piping to it.

Gas piping may be connected from either side of the furnace.
Sizing and installation of the supply gas line should comply with
the local utility requirements.

The gas supply should be a separate line, installed in accord-
ance with the National Fuel Gas Code, ANSI Z223.1, or
CAN/CGA B149.1 or .2 Installation Codes - (latest editions). 

Some utility companies, or local codes, require pipe sizes
larger than the minimum sizes listed. Using the properly sized
wrought iron, approved flexible  or steel pipe, make gas con-
nections to the unit. Installation of a drop leg and ground union
is required (See Figure 11).

WARNING: Compounds used on threaded joints of gas piping

must be resistant to the action of liquefied petroleum
gases.

WARNING: After all gas piping connections are completed,

leak test all joints, fittings and furnace connections with
rich soap and water solution, commercial available bubble
type leak detection fluid, or other approved means.

WARNING: Do not use an open flame or other source of

ignition for leak testing.

ELECTRICAL POWER CONNECTION

Field wiring to the unit must conform to and be grounded in
accordance with the provisions of the National Electrical Code
ANSI/NFPA No. 70 -latest edition, Canadian Electric Code
C22.1 Part 1 - (latest edition) and/or local codes. Electrical
wires which are field installed shall conform with the tempera-
ture limitation for 63

°

F/35

°

C rise wire when installed in accord-

ance with instructions. Specific electrical data is given on the
furnace rating plate.

Provide a power supply separate from all other circuits. Install
overcurrent protection and disconnect switch per local/national
electrical codes. The switch should be reasonable close to the
unit for convenience in servicing. With the disconnect switch in
the OFF position, check all wiring against the unit wiring label.
Also, see the wiring diagram in this instruction.
Use copper conductors only.

CAUTION: Do not pull the lead to the HSI during the power

wiring process. Pulling lead will damage the HSI.

NOTE: Canadian installations must have flexible conduct to

protect power wiring between furnace jacket and control
box.

CLASS 2 SYSTEM
CONTROL WIRING

TO THERMOSTAT

C

R

Y

G

W

C O O L

H E A T

P A R K

P A R K

X F M R

L I N E

H U M

E A C

X F M R

E A C

L I N E

C I R

H U M

Y

L1

(HOT)

N

GRD

BLK

GRN

WHI

WIRING INSIDE
WIRING BOX

: BLK/BLK

WHI/WHI

GRN/GRN

CONNECTOR

FIGURE 12 - POWER/CONTROL WIRING

 (Upflow Models -left, Downflow Models - right)

CLASS 2 SYSTEM

CONTROL WIRING

L1

(HOT)

N

GRD

BLK

GRN

WHI

POWER WIRING

C

R

Y

G

W

CO

OL

HE

AT

PA

RK

PA

RK

XF

MR

LI

NE

HU

M

EA

C

XF

MR

EA

C

LINE

CI

R

HU

M

Y

NOTE: Strain relief connector must be applied on power
         line between control box and furnace cabinet.
 

INLET GAS PRESSURE RANGE

Natural Gas

Propane (LP)

Minimum

4.5 In. W.C.

11 In. W.C.

Maximum

13.8 In W.C.

13.8 In. W.C.

FIGURE 11 - GAS PIPING

650.69-N3

10

Unitary Products Group

Summary of Contents for P2MP Series

Page 1: ...s supplier s instructions If you cannot reach your gas supplier call the fire department IAMON 80 D D UPFLOW MULTI POSITION GAS FIRED FURNACES INDUCED DRAFT STYLE G INSTALLATION INSTRUCTION Supersedes...

Page 2: ...ired appli ances as allowed by the National Fuel Gas Code NFPA 54 ANSI Z223 1 latest edition WARNING This appliance is not to be used for temporary heating of buildings or structures under constructio...

Page 3: ...pace The openings shall com municate freely with interior areas having adequate infil tration from the outside NOTE At least 100 square inches free area shall be used for each opening 2 Air Source fro...

Page 4: ...2MPD20 11201 35 65 180 3 4 11 x 10 13 8 15 14 16 X 25 25 X 27 163 Variable Speed Blower Models P2MPV12N06401 25 55 180 1 2 10 x 7 12 15 14 16 X 25 16 X 27 119 P2MPV14N08001 30 60 180 1 2 10 x 9 12 15...

Page 5: ...3 8 15 14 2 14 X 20 168 Model designator may be N for standard units or L for factory built low NOx units Model A B C D P2DPD10 04801 16 1 4 14 15 3 P2DPD12 06401 16 1 4 14 15 4 P2DPD12 08001 22 1 4 2...

Page 6: ...al Fuel Gas Code ANSI Z223 1 or the CAN CGA B149 Installation Codes and these in structions Determine that there is no blockage or restric tion leakage corrosion or other deficiencies which could caus...

Page 7: ...ilter and Mounting System A return air filter grille or duct mounted filter may be provided The following minimum sizes are recom mended NOTE Air velocity through throw away type filters may not excee...

Page 8: ...ing rod pipe or straps refer to Physical Data Page 4 for furnace weights to determine suitable means of suspension Angle supports should be placed at the supply air end and near the blower deck Units...

Page 9: ...ied on the rating plate or a matching cooling coil Follow the instructions with the combustible floor base acces sory The floor opening dimensions for the floor base are shown in Figure 10 This base c...

Page 10: ...with the provisions of the National Electrical Code ANSI NFPA No 70 latest edition Canadian Electric Code C22 1 Part 1 latest edition and or local codes Electrical wires which are field installed shal...

Page 11: ...t rely upon the interlock switch as a main power disconnect Rollout Switch Controls These controls are mounted on the burner assembly If the temperature in the burner compartment exceeds its set point...

Page 12: ...t is not within 2 of the furnace rating with allowance being made for the permissible range of the regula tor setting 0 3 inches W C replace the orifice spuds with spuds of the proper size CAUTION Be...

Page 13: ...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 motor lead Place all unused motor leads on Park t...

Page 14: ...l begin and the burner will operate normally if the gas supply returns or the fault condition is corrected prior to the last ignition attempt Otherwise the control will lockout The control will repeat...

Page 15: ...n Start the system by setting the thermostat above room temperature Observe the system s response Then use the Troubleshooting tables in this manual to check the system s operation Use the troubleshoo...

Page 16: ...tat G to R contacts close FAN ONLY CHECK COOLING CYCLE CHECK Does the circulator blower energize at cool speed Is 25 volts present across terminals Y C Is 25 volts present across terminals R C Is 25 v...

Page 17: ...or circuit breaker System is functioning properly Connect voltmeter across terminals of igniter harness Check wiring If ok replace thermostat Energize system and check for proper operation No No Yes...

Page 18: ...esent Check wiring If OK replace module Energize and check for proper operation Reverse 120 V hot and neutral line wires Less than 30 V Unplug circulator blower wires and connect voltmeter across term...

Page 19: ...WIRING DIAGRAM UPFLOW MULTI SPEED MODELS NOTE The furnace s control system depends on correct polarity of the power supply 650 69 N3 Unitary Products Group 19...

Page 20: ...WIRING DIAGRAM DOWNFLOW MODELS NOTE The furnace s control system depends on correct polarity of the power supply 650 69 N3 20 Unitary Products Group...

Page 21: ...2110 2004 1913 1797 1581 MED 2027 1986 1945 1917 1877 1820 1763 1653 1558 1445 LOW 1349 1327 1312 1281 1233 1150 1078 P2MPD20N11201 See Notes 6 7 HIGH 2204 2154 2081 2055 2002 1933 1843 1706 1545 1409...

Page 22: ...PD16 08001 HIGH 2043 2000 1893 1823 1726 1627 1503 1382 1249 1134 MED 1706 1655 1593 1533 1450 1366 1265 1163 1062 950 LOW 1452 1406 1373 1317 1245 1174 1112 1025 935 817 P2DPD16 09201 HIGH 2053 1977...

Page 23: ...NOTES 650 69 N3 Unitary Products Group 23...

Page 24: ...y Products Group P O Box 1592 York Pennsylvania USA 17405 1592 Subject to change without notice Printed in U S A Copyright by York International Corporation 1994 All Rights Reserved Code SBY 650 69 N3...

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