Electrical Control Connections - York P*UR 40 Installation Instructions Manual

650.75-N4U
nector or other proper connection. Make wiring connections,
(Refer to Figure 11.) Replace the wiring box cover and
screws.
WIRING INSIDE
JUNCTION BOX
JUNCTION
BOX
BURNER COMPARTMENT
DOOR SWITCH
TRANSFORMER
IGNITION MODULE
BLOWER COMPARTMENT
FIGURE 11 : UPFLOW MODELS (P*UR / FG9-UP /
G9T-UP) ELECTRICAL WIRING
An alternate wiring method is to use a field provided 2 x 4 box
and cover on the outside of the furnace. Route the furnace
leads into the box using a protective bushing where the wires
pass through the furnace panel.
NOTE:The power connection leads and wiring box on upflow
units may be relocated to the left side of the furnace. Remove
the screws and cut wire tie holding excess wiring. Reposition
on the left side of the furnace and fasten using holes pro-
vided.

ELECTRICAL CONTROL CONNECTIONS

Install the field-supplied thermostat. The thermostat instruc-
tions for wiring are packed with the thermostat. With the ther-
mostat set in the OFF position and the main electrical source
disconnected, complete the low-voltage wiring from the ther-
mostat to the terminal board on the ignition module. Connect
Class 2 control wiring as shown in Figures 13 & 14. Electronic
thermostats may require a common connection as shown
dashed in Figure 14.
14
L1
(HOT)
N
GRD
: BLK/BLK
WHI/WHI
GRN/GRN WHI
GRN
BLK
CLASS 2 SYSTEM
CONTROL WIRING
TO THERMOSTAT
L1
(HOT)
N
GRD
WHI
BLK
JUNCTION
BOX
BLOWER COMPARTMENT
IGNITION MODULE
TRANSFORMER
DOOR
SWITCH
BURNER COMPARTMENT
FIGURE 12 : DOWNFLOW / HORIZONTAL MODELS
(P*DH / FG9-DH / G9T-DH) ELECTRI-
CAL WIRING
Set the heat anticipator in the room thermostat to
.45 amps. Setting it lower will cause short cycles.
Setting it higher will cause the room temperature to
exceed the setpoints
FIGURE 13 : POWER WIRING CONNECTIONS
ROOM FURNACE
THERMOSTAT CONTROL
R R
W W
G G
Y Y
C
C
FIGURE 14 : TYPICAL HEATING AND COOLING
035-14370-000
WIRING INSIDE
GRN
JUNCTION BOX
: BLK/BLK
WHI/WHI
GRN/GRN
VENT PIPE
CLASS 2 SYSTEM
CONTROL WIRING
TO THERMOSTAT
FLUE CHASE
CONDENSING
UNIT
TO AIR CONDITIONER
CONTROLS
Unitary Products Group