Carrier RHW036-060, Руководство по установке, Страница: 14 / 44

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Specifications subject to change without notice.
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6. Measure from the tip of the shaft to the top surface of
the black pointer; the measurement should be 3.75 to
3.88 in. (95 to 99 mm).
7. Tighten the locking screw to secure the shaft to the
NFD.
8. Turn the handle to the OFF position with red arrow
pointing at OFF.
9. Install the handle on to the painted cover horizontally
with the red arrow pointing to the left.
10. Secure the handle to the painted cover with (2)
screws and lock washers supplied.
11. Engaging the shaft into the handle socket, re-install
(3) cap head screws on the NFD enclosure.
12. Re-install the unit front panel.
Fig. 19 — NFD Enclosure Location
Fig. 20 — NFD Handle and Shaft Assembly
Units Without Factory-Installed Non - Fused Disconnect
When installing units, provide a disconnect switch per NEC
(National Electrical Code) of adequate size. Disconnect siz -
ing 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. 18 and the unit label diagram
for power wiring connections to the unit power terminal
blocks and equipment ground. Maximum wire size is #2ga
AWG (copper only) per pole on contactors, #2ga AWG
(copper only) per pole on optional disconnect, and 4/0 AWG
(copper only) per pole on terminal or fuse block on units with
single point box. See Fig. 18 and unit label diagram for field
power wiring connections.
Provide a ground fault and short circuit over-current protec -
tion device (fuse or breaker) per NEC Article 440 (or local
codes). Refer to unit informative data plate for MOCP (Max -
imum Over-Current Protection) device size.
All field wiring must comply with the NEC and local
requirements.
All units except 208/230v units are factory wired for the volt -
age shown on the nameplate. If the 208/230v unit is to be
connected to a 208v power supply, the control transformer
must be rewired by removing the black wire with the
1
/
4
-in.
female spade connector from the 230v connection and
moving it to the 200v
1
/
4
-in. male terminal on the primary
side of the transformer. Refer to unit label diagram for addi -
tional information. Field power wires will be connected at
line-side pressure lugs on the power terminal block or at
factory-installed option non-fused disconnect.
NOTE: Check all factory and field electrical connections for
tightness.
CONVENIENCE OUTLETS
Two types of convenience outlets are offered on RHW mod -
els: Non-powered and unit-powered. Both types provide a
125-volt GFCI (ground-fault circuit-interrupter) duplex re -
ceptacle rated at 15-A behind a hinged waterproof access
cover, located on the end panel of the unit. See Fig. 21.
Figure 22 shows the Convenience Outlet Utilization label
which is located below the convenience outlet.
Fig. 21 — Convenience Outlet Location
WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
Units with convenience outlet circuits may use multiple
disconnects. Check convenience outlet for power status
before opening unit for service. Locate its disconnect
switch, if appropriate, and open it. Lock-out and tag-out
this switch, if necessary.
CONVENIENCE
OUTLET GFCI
PWD-CO FUSE
SWITCH
PWD-CO
TRANSFORMER