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Install conduit through side
duit between disconnect and control box. Install power lines
to terminal connections as shown in Fig.
Voltage to compressor terminals during operation inust
be within voltage range indicated on unit namylate (see
Table 2) On 3-phase units, voltages betw^®"
be balanced within 2% and the current within 10%. Use the
forSshol in Table 2, Note 2 to determine the % volt¬
age imbalance. Operation on improper line voltage or ex¬
cessive phase imbalance constitutes abuse and may cause
damage to electrical components. Such operation would
validate any applicable Carrier warranty.
FIELD CONTROL WIRING - Install a Carrier-approved
temostat assembly
to
^triictions included with the accessory. Locate thermostat
assembly on a solid wall in the conditioned space to sense
average ^temperature in accordance with thermostat insta -
lation instructions.
.
.
,
,
^
i
Route thermostat cable or equivalent single ea s o co
ore^ wte from subbase terminals to
"ions on unit (shown in Fig. 8) as described in Steps 1-4
below.
NOTE' For wire runs up to 50 ft, use no. 18
ican Wire Gage) insulated wire (35
mMmlm)
75 ft, use no. 16 AWG insulated wire (35 C minim^).
For
over 75 ft, use no. 14 AWG insulated wire (35 C min-
imum) 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.
1
If unit is mounted on roof curb and accessory Ihm-the-
curb service plate connection is used, route wire through
connection plate.
2
Pass control wires through the hole provided on unit (see
' connection D, Connection Sizes Table, Fig. 6).
3
Feed wire through the raceway built into the corner post
to "v barrfer located on the left *.de o >he contod
box See Fig. 9. The raceway provides the UL-requirea
clearance between the high- and low-voltage wiring
4. Connect thermostat wires to screw terminals of low-
voltage connector.
HEAT ANTICIPATOR SETTINGS
settings as shown in Table 3.
Set heat anticipator
BLK
o
yel| I
©
<c>
S>
®
1
BLU
TO COMPS
0
TB2'V-1
disconnect
50LJ008-014. 575-3-60
I-^EI^EC —
TO COMPS
I /z\
T
l ft
BLU
I
I
@1 <g>
FIELD POWER SUPPLY
_l_l_l-1
r
DISCONNECT
.
j_PW^C_
\
50LJ008-012, 208/230-3-60: 50LJ008-014.460-3-60
C
-
COMP(S)
-
IFC
NEC
TB
-
legend
TO COMP 1
FIELD POWER SUPPLY
;
bisCONNECT ~1
*
PER NEC
50LJ014, 208/230-3-60
I--J
Contactor
S°dr(lv°a?olator)FanC<.ntaolor
National Electrical Code
Terminal Block
Terminal Block Connection
Splice Connection
Field Wiring
Factory Wiring
Fig. 7 - Power Wiring Connections
7
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