50HCQA
LOW VOLTAGE
CONDUIT
CONNECTOR
HIGH VOLTAGE
CONDUIT
CONNECTOR
C08637
Fig. 20 - Thru-Base Connection Fittings
electronic thermostat, configure it for
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.
hole must be field cut in the main control box bottom on the left side so the
Units without Thru-Base Connections —
1.Install power wiring conduit through side panel open- ings. Install conduit between disconnect and control box.
2.Install power lines to terminal connections as shown in Fig. 16.
All Units: Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate. See Table 10. On
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 | ||
| ||
|
|
current within 10%. Use the formula shown in the legend for Table 10, Note 2 (see page 42) to determine the percent of voltage imbalance. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation would invalidate any applicable Carrier warranty.
Field Control Wiring —
The 50HCQA unit requires an external temperature control device. This device can be a thermostat
Thermostat —
Install a
R | R |
Note 1: Typical
Note 2: W2 connection not required on units without electric heating.
Field Wiring
C09012
Fig. 21 - Typical Low-Voltage Control Connections
Unit without Thru-Base Connection Kit —
Pass the thermostat control wires through the hole provided in the corner post; then feed the wires through the raceway built into the corner post to the control box. Pull the wires over to the terminal strip on the
NOTE: If
Heat Anticipator Settings —
Set heat anticipator settings at 0.14 amp for the first stage and 0.14 amp for
14