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17
6. Measure the tip of the shaft to the top surface of the
pointer to be 3.75 to 3.88 in. (95 to 99 mm) for 80A and
100A NFD and 3.43 to 3.56 in. (87 to 90 mm) for 200A
NFD.
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 —
Handle and Shaft Assembly for NFD
CONVENIENCE OUTLETS
Two types of convenience outlets are offered on 50HCQ
models: non-powered and unit-powered. Both types provide a
125-volt GFCI (ground-fault circuit interrupter) duplex re
-
ceptacle rated at 15A behind a hinged waterproof access cov
-
er, located on the end panel of the unit. See Fig. 30.
A 20 amp non-powered convenience outlet is available as a
field-installed accessory.
Non-Powered Convenience Outlet
This type requires the field installation of a general-purpose 125v
15A circuit powered from a source elsewhere in the building. Ob
-
serve national and local codes when selecting wire size, fuse or
breaker requirements, and disconnect switch size and location.
Route 125v power supply conductors into the bottom of the utility
box containing the duplex receptacle.
Fig. 30 —
Convenience Outlet Location
Unit-Powered Convenience Outlet
A unit-mounted transformer is factory-installed to step down the
main power supply voltage to the unit to 115-v at the duplex re
-
ceptacle. This option also includes a manual switch with fuse, lo
-
cated in a utility box and mounted on a bracket behind the conve
-
nience outlet; access is through the unit’s control box access panel.
See Fig. 30.
The primary leads to the convenience outlet transformer are not
factory-connected. Selection of primary power source is a custom
-
er-option. If local codes permit, the transformer primary leads can
be connected at the line-side terminals on the unit-mounted non-
fused disconnect switch; this will provide service power to the unit
when the unit disconnect switch is open. Other connection meth
-
ods will result in the convenience outlet circuit being de-energized
when the unit disconnect switch is open. See Fig. 31. On a unit
without a unit-mounted disconnect, connect the source leads to the
main terminal block (TB1).
If the convenience outlet transformer is connected to the line side
of a field disconnect, the conduit provided with the unit must be
used to protect the wire as they are routed from the transformer to
the field disconnect. The end of the conduit with the straight con
-
nector attaches to the field disconnect. The other end does not
need to connect to the transformer; however, the conduit must be
routed so that all wiring is either in the conduit or behind the ac
-
cess panel.
If the convenience outlet transformer is connected to the line side
of the factory disconnect option, route the wires through the web
bushing located on the bottom of the disconnect box. For the load
side wiring to the factory option disconnect, route the wires
through the hole on the right side of the disconnect. Be sure to cre
-
ate a drip loop at least 6 inches long.
WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury or
death.
Units with convenience outlet circuits may use multiple dis
-
connects. Check convenience outlet for power status before
opening unit for service. Locate its disconnect switch, if appro
-
priate, and open it. Lock-out and tag-out this switch, if neces
-
sary.
CONVENIENCE
OUTLET
GFCI
PWD-CO
FUSE
SWITCH
PWD-CO
TRANSFORMER
DISCONNECT
ACCESS PANEL
Summary of Contents for 50HCQ12
Page 4: ...4 Fig 2 Unit Dimensional Drawing Size 12 Units ...
Page 5: ...5 Fig 2 Unit Dimensional Drawing Size 12 Units cont ...
Page 9: ...9 Fig 6 Roof Curb Details REV 50TM500827 ...
Page 25: ...25 Fig 42 Typical 50HCQ Control Wiring Diagram ...
Page 26: ...26 Fig 43 Typical 50HCQ Power Wiring Diagram 208 230 3 60 unit shown ...
Page 27: ...27 Fig 44 PremierLink Controller Wiring Schematic ...
Page 28: ...28 Fig 45 RTU Open Controller System Wiring Diagram ...