Bryant 548J*17 D Series, Руководство по установке

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23
Test the GFCI receptacle by pressing the TEST button on
the face of the receptacle to trip and open the receptacle.
Check for proper grounding wires and power line phasing
if the GFCI receptacle does not trip as required. Press the
RESET button to clear the tripped condition.
Fuse on power type: The factory fuse is a Bussman
FNQ--7 dual element time delay fuse.
Using unit--mounted convenience outlets: Units with
unit--mounded convenience outlet circuits will often
require that two disconnects be opened to de--energize all
power to the unit. Treat all units as electrically energized
until the convenience outlet power is also checked and
de--energization is confirmed. Observe National Electrical
Code Article 210, Branch Circuits, for use of convenience
outlets.
Installing weatherproof cover: A weatherproof
while-in-use cover for the factory-installed convenience
outlets is now required by UL standards. This cover
cannot be factory-mounted due its depth; it must be
installed at unit installation. For shipment, the
convenience outlet is covered with a blank cover plate.
The weatherproof cover kit is shipped in the unit’s control
box. The kit includes the hinged cover, a backing plate
and gasket.
DISCONNECT ALL POWER TO UNIT AND
CONVENIENCE OUTLET.
Remove the blank cover plate at the convenience outlet;
discard the blank cover.
Loosen the two screws at the GFCI duplex outlet, until
approximately
1
/
2
-in. (13 mm) under screw heads are
exposed. Press the gasket over the screw heads. Slip the
backing plate over the screw heads at the keyhole slots
and align with the gasket; tighten the two screws until
snug (do not over-tighten).
Mount the weatherproof cover to the backing plate as
shown in Fig. 26. Remove two slot fillers in the bottom of
the cover to permit service tool cords to exit the cover.
Check for full closing and latching.
RECEPTACLE
NOT INCLUDED
COVER – WHILE-IN-USE
WEATHERPROOF
BASE PLATE FOR
GFCI RECEPTACLE
C09022
Fig. 26 -- Weatherproof Cover Installation
Factory--Option Thru--Base Connections —
All units are equipped with the ability to bring utilities
through the base.
The electrical entrance is located in the control box area
can can be accessed through the control box access panel.
An embossed area is provided with three knock outs. High
voltage is brought through the multi knock out by
removing the appropriate size for the size of the fitting
required. A
7
/
8
--in. knock out is provided for low voltage.
An additional
7
/
8
--in. knock out is provided for a 115 volt
line which is used when the unit is equipped with the
non--powered convenience outlet option.
All required fittings are field supplied. Install fittings when
access to both top and bottom of the base pan is available.
Units Without Thru--Base Connections —
1. Install conduit, liquid tight, between disconnect and
control box.
2. Pull correctly rated high voltage wires through the
conduit.
3. Install power lines to terminal connections as shown
in Fig. 23.
Field Control Wiring —
The 548J unit requires an external temperature control
device. This device can be a thermostat emulation device
provided as part of a third--party Building Management
System or the RTU Open controller (RTU Open controller
is available as a factory--installed option only).
Thermostat —
Select a Bryant--approved accessory thermostat. The 548J
models do not require a thermostat with an O function to
control the reversing valve operation. When electric heat is
installed in the 548J unit, the thermostat must be capable of
energizing the G terminal (to energize the Indoor Fan
Contactor) whenever there is a space call for heat
(energizing the W1 terminal). The accessory thermostats
listed on the unit price pages can provide this signal but they
are not configured to enable this signal as shipped.
Install the accessory thermostat according to installation
instructions included with the accessory.
Locate the thermostat accessory on a solid wall in the
conditioned space to sense average temperature in
accordance with the thermostat installation instructions.
If the thermostat contains a logic circuit requiring 24--v
power, use a thermostat cable or equivalent single leads of
different colors with minimum of seven leads. If the
thermostat does not require a 24--v source (no “C”
connection required), use a thermostat cable or equivalent
with minimum of six leads. Check the thermostat
installation instructions for additional features which
might require additional conductors in the cable.
For wire runs up to 50 ft. (15 m), use no. 18 AWG
(American Wire Gage) insulated wire (35
_
C minimum).
For 50 to 75 ft. (15 to 23 m), use no. 16 AWG insulated
wire (35
_
C minimum). For over 75 ft. (23 m), use no. 14
AWG insulated wire (35
_
C minimum). All wire sizes