22
To field install the HACR shaft and handle:
1. Remove the unit front panel (see Fig. 2).
2. Remove (3) hex screws on the HACR enclosure -- (2)
on the face of the cover and (1) on the left side cover.
3. Remove the front cover of the HACR enclosure.
4. Make sure the HACR shipped from the factory is at
OFF position (the white arrow pointing at OFF).
5. Insert the shaft all the way with the cross pin on the
top of the shaft in the horizontal position.
6. Tighten the locking screw to secure the shaft to the
HACR.
7. Turn the handle to the OFF position with red arrow
pointing at OFF.
8. Install the handle on to the painted cover horizontally
with the red arrow pointing to the left.
9. Secure the handle to the painted cover with (2) screws
and lock washers supplied.
10. Engaging the shaft into the handle socket, re--install
(3) hex screws on the HACR enclosure.
11. Re--install the unit front panel.
C12280
Fig. 31 -- Location of HACR Enclosure
C12281
Fig. 32 -- Handle and Shaft Assembly for HACR
Units Without Factory--Installed
Non--Fused Disconnect or HACR —
When installing units, provide a disconnect switch per
NEC (National Electrical Code) of adequate size.
Disconnect sizing data is provided on the unit informative
plate. Locate on unit cabinet or within sight of the unit per
national or local codes. Do not cover unit informative
plate if mounting the disconnect on the unit cabinet.
All Units —
All field wiring must comply with NEC and all local codes.
Size wire based on MCA (Minimum Circuit Amps) on the
unit informative plate. See Fig. 27 and unit label diagram for
power wiring connections to the unit and equipment ground.
Maximum wire size is #4 ga AWG (copper only) per pole
on contactors and #2ga AWG (copper only) per pole on
optional non--fused disconnect or HACR.
Provide a ground--fault and short--circuit over--current
protection device (fuse or breaker) per NEC Article 440
(or local codes). Refer to unit informative data plate for
MOCP (Maximum Over--current Protection) device size.
NOTE: Units ordered with factory installed HACR do
not need an additional ground--fault and short--circuit
over--current protective device unless required by local
codes.
All field wiring must comply with the NEC and local
requirements.
All units except 208/230-v units are factory wired for the
voltage shown on the nameplate. If the 208/230-v unit is to
be connected to a 208-v power supply, the control
transformer must be rewired by moving the black wire with
the
1
/
4
-in. female spade connector from the 230--v
connection and moving it to the 200-v
1
/
4
-in. male terminal
on the primary side of the transformer. Refer to unit label
diagram for additional information.
Voltage to compressor terminals during operation must be
within voltage range indicated on unit nameplate. See
Tables 19 -- 20. On 3--phase units, voltages between
phases must be balanced within 2% and the current within
10%. Use the formula shown in the legend for Tables 19
and 20, Note 2 (see page 60) 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.
NOTE: Check all factory and field electrical connections
for tightness.
48HC48LC
To Next Page
Loading...
