Factory-Option Thru-Base Connections —
This service connection kit consists of a
Check tightness of connector lock nuts before connecting electrical conduits.
LOW VOLTAGE
CONDUIT
CONNECTOR
HIGH VOLTAGE
CONDUIT
CONNECTOR
Thermostat —
Install a
If the thermostat contains a logic circuit requiring
For wire runs up to 50 ft. (15 m), use no. 18 AWG (American Wire Gage) insulated wire (35_C minimum). For 50 to 75 ft. (15 to 23 m), use no. 16 AWG insulated wire (35_C minimum). For over 75 ft. (23 m), use no. 14 AWG insulated wire (35_C minimum). All wire sizes larger than no. 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat.
548J*14D
C10017
Fig. 26 - Thru-Base Connection Fittings
Units without Thru-Base Connections —
1. Install power wiring conduit through side panel open- |
Typical
Thermostat
Connections
C
G
W2
(Note 2)
W1
O/B/Y2
(Note 1)
Y1
Central
Terminal
Board
X
C
T
GH E
W2 | R | |
M | ||
| ||
| ||
| O | |
W1 | ||
S | ||
| ||
| ||
| T | |
Y2 | ||
A | ||
| ||
| T | |
Y1 | ||
| ||
|
|
ings. Install conduit between disconnect and control |
box. |
2. Install power lines to terminal connections as shown |
in Fig. 22. |
Field Control Wiring —
The 548J*14D unit requires an external temperature control device. This device can be a thermostat emulation device provided as part of a
R | R |
Note 1: Typical
Note 2: W2 connection not required on units without electric heating.
Field Wiring
C09012
Fig. 27 - Typical Low-Voltage Control Connections
15