Carrier WeatherMaker 50TCQ*08, Руководство по установке

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UNITS WITH FACTORY-INSTALLED NON-FUSED
DISCONNECT
The factory-installed option non-fused disconnect (NFD)
switch is located in a weatherproof enclosure located under the
main control box (see Fig. 29). The manual switch handle is
accessible through an opening in the access panel. Discard the
factory test leads (see Fig. 24).
Field-Installation of the NFD Shaft and Handle
1. Remove the Control Box access panel. The NFD enclo-
sure is located below the Control Box (see Fig. 29).
2. Remove (3) cap head screws that secure the NFD enclo-
sure front cover — (2) on the face of the cover and (1) on
the left side cover. See Fig. 30.
3. Remove the front cover of the NFD enclosure.
4. Make sure the NFD shipped from the factory is at OFF
position (the arrow on the black handle knob is at OFF).
5. Insert the shaft with the cross pin on the top of the shaft in
the horizontal position. See Fig. 30.
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 point-
ing 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)
hex screws on the NFD enclosure.
12. Re-install the unit front panel.
Fig. 29 — Location of Non-Fused Disconnect
Enclosure
Fig. 30 — Handle and Shaft Assembly for NFD
UNITS WITHOUT FACTORY-INSTALLED NON-FUSED
DISCONNECT
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. 24 and the unit label diagram for
power wiring connections to the unit power terminal blocks
and equipment ground. Maximum wire size is #2 ga AWG per
pole.
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.
All field wiring must comply with the NEC and local require-
ments.
NOTE: Check all factory and field electrical connections for
tightness.
CONVENIENCE OUTLETS
Two types of convenience outlets are offered on 50TCQD
models: non-powered and unit-powered. Both types provide a
125-v GFCI (ground-fault circuit-interrupter) duplex recepta-
cle rated at 15-A behind a hinged waterproof access cover, lo-
cated on the end panel of the unit. See Fig. 31.
WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal inju-
ry 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.