Carrier 50HJ017 - Electrical Connections; Field Power Supply Wiring; Field Control Wiring

(HALF CO_ L_
8 I12-IN. (FIELD- _"'] I
SUPPLIED) NIPPLE
Fig. 9 -- Condensate Drain Piping Details
Step 6 -- Make Electrical Connections
FIELD POWER SUPPLY -- Unit is factory wired for volt-
age shown on nameplate.
When installing units, provide a disconnect, per NEC
(National Electrical Code) requirements, of adequate size
(Table 2). Electric_d heater data is shown in Table 3.
All field wiring must comply with NEC and local require-
ments.
Route power lines through conhol box access panel or unit
basepan (Fig. 4) to connections as shown on unit wiling dia-
gram and Fig. 10.
Operating voltage to compressor must be within voltage
range indicated on unit nmneplate. On 3-phase units, voltages
between phases must be balanced within 2% and the cunent
must be b_danced within 10%.
The correct power phasing is critical in the operation of the
scroll compressors. An inconect phasing will cause the
compressor to rotate in the wrong direction. This may lead
to premature compressor failure.
Unit failure as a result of operation on improper line voltage
or excessive phase imbalance constitutes abuse and may cause
dmnage to electrical components.
FIELD CONTROL WIRING -- Install a CguTier-approved
accessory fllermostat assembly according to the installation in-
structions included wifll the accessory. Locate thermostat as-
sembly on a solid wall in the conditioned space to sense aver-
age temperature.
Route thermostat cable or equiv_dent single leads of colored
wire fi_)m subbase terminals through conduit in unit to low-
voltage connections as shown on unit label wiring diagram and
in Fig. 11.
NOTE: For wire runs up to 50 It, use no. 18 AWG (American
Wire Gage) insulated wire (35 C minimum). For 50 to 75 It,
use no. 16 AWG insulated wire (35 C minimum). For over
75 It, use no. 14 AWG insulated wire (35 C minimum). All
wire larger than no. 18 AWG cannot be directly connected to
the thermostat and will require a junction box and splice at the
thermostat.
Set heat anticipator settings as indicated in Table 4. Settings
may be changed slightly to provide a greater degree of comfort
for a particuku inst_dlation.
Refer to accessory remote control instructions as lequired.
------'I TBI
I _
I FIELD I f---I F'LM
L ..... POWER I _
.......
1
r
, !
l EQUIP GNO
I
L....................
TB1 MAXIMUM WIRE SIZE
UNIT
50HJ
All
208/230
350 kcmil
LEGEND
EQUIP-- Equipment
GND -- Ground
kcmil -- Thousand Circular Mils
NEC -- National Electrical Code
TB -- Terminal Block
Fig.
VOLTAGE
2/0 2/0
10- Field Power Wiring Connections
THERMOSTAT ASSEMBLY
R E_J U M_]R I_ I_ I_ [_ [_
m m
C3 _ Z Z I--
LU _' Z CC 0 3_, _
cc m o_ 0 _ m m 5:
UNIT LOW-VOLTAGE CONNECTIONS
Fig. 11 -- Field Control Thermostat Wiring