9
Electrical Power Directly To Junction Box
Electrical Power Routed Through Bottom of Unit
Note:Junction box location
shown is optional and is
for illustration purposes only.
JUNCTION BOX
Typical Electrical Wiring Unit Voltage
U
NIT
V
OLTAGE
The unit transformer is factory connected for 230V operation.
If the unit is to operate on 208V, reconnect the transformer
primary lead as shown on the unit wiring diagram. The induced
draft blower on some models is equipped with a 230V lead
(red) and a 208V lead (black). If equipped, connect the induced
draft blower 208V lead (black) in place of the 230V lead (red).
Tape the unused 230V lead.
H
EAT
A
NTICIPATOR
S
ETTING
The heat anticipator is to be set by measuring the load
(amperage) at the “R” circuit. Follow the instructions provided
by the thermostat for more details.
G
Y
W
R
R
W
Y
G
From
Unit
Typical Thermostat and Unit 24 V Wiring Hookup
C
3
2
1
6
5
9
8
11
12
Y
R
4
7
10
G
W
G
W
Y1
R
2
T1
C22
P2
P3
FUSE 3 AMP MAX
P1
12
1
7
4
4
5
3
3
6
9
FS
6
10
7
F1
11
8
11
10
12
9
K1
12
T2
BR
EA
K
F
O
R
T
W
O
ST
AG
E
C
O
M
P
R
E
SSO
R
24V
A
C
5
0/60
H
z
400m
A
MA
X
.
L1
DI
K2
L1
HE
A
T
UNUS
E
D
K4
K3
CO
O
L
10 68
-83-
400 A
MO
D
E
L
10
68
-4
00
B18
099-18
AN
S
I Z
2
1
.2
0
AU
T
O
M
A
T
IC
I
G
N
IT
IO
N
SYS
T
E
M
L2
L2
L2
L2
EC
O
N
120
135
150
SP
EE
D
-U
P
LOW VOLTAGE
CONNECTOR
Y/Y2
Low Voltage Wiring-*PG1360***1A Only
Refer to the unit wiring diagram for electrical connections.
When installed, the unit must be electrically grounded in
accordance with local codes or in the absence of local codes,
with the National Electrical Code, ANSI/NFPA No. 70, and/or
the CSA C22.1 Electrical Code. Ensure low voltage
connections are waterproof.
WARNING
T
O AVOID THE RISK OF ELECTRICAL SHOCK, WIRING TO THE UNIT MUST BE
POLARIZED AND GROUNDED.
CAUTION
T
O AVOID PROPERTY DAMAGE OR PERSONAL INJURY DUE TO FIRE, USE
ONLY COPPER CONDUCTORS.
CAUTION
T
O PREVENT IMPROPER AND DANGEROUS OPERATION DUE TO WIRING ERRORS,
LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS.
V
ERIFY PROPER OPERATION AFTER SERVICING.
For unit protection, use a fuse or HACR circuit breaker that is
in excess of the circuit ampacity, but less than or equal to the
maximum overcurrent protection device. DO NOT EXCEED
THE MAXIMUM OVERCURRENT DEVICE SIZE SHOWN ON
UNIT DATA PLATE.
All line voltage connections must be made through
weatherproof fittings. All exterior power supply and ground
wiring must be in approved weatherproof conduit. Low voltage
wiring from the unit control panel to the thermostat requires
coded cable. See below for ground level and rooftop wiring.
