Single Point Boxes And Supplementary Fuses; Single Point Boxes Without Fuses - Bryant 551J*07A/G Series Installation Instructions Manual

DISCONNECT EMT OR RIGID CONDUIT
MOUNTING (FIELD-SUPPLIED)
LOCATION
SINGLE POINT
MAIN BRACKET AND BOX
CONTROL CONDUIT MOUNTING
BOX DRIP BOOT SCREW
CONTROL WIRE TERMINAL BLOCK
Fig. 28 - - Typical Component Location
Fig. 29 - - Typical Module Installation
Not all available heater modules may be used in every
unit. Use only those heater modules that are UL listed for
use in a specific size unit. Refer to the label on the unit
cabinet for the list of approved heaters.
Unit heaters are marked with Heater Model Numbers, but
heaters are ordered as and shipped in cartons marked with
a corresponding heater Sales Package part number. See
Table 2 for correlation between heater Model Number and
Sales Package part number.
NOTE: The value in position 9 of the part number differs
between the sales package part number (value is 1) and a
bare heater model number (value is 0).
Bare Heater Model Number
Heater Sales Package P/N
Includes:
Bare Heater
Carton and packing materials
Installation sheet
SINGLE CENTER MANUAL RESET
POINT BOX POST LIMIT SWITCH
HEATER
COVERS
HEATER HEATER HEATER
MODULE MODULE MOUNTING
(LOCATION 1) (LOCATION 2) BRACKET
C08134
TRACK
FLANGE
C08135
Table 2 – Heater Model Number
C R H
C R H
Single Point Boxes and Supplementary Fuses —
When the unit MOCP device value exceeds 60- - A,
unit- - mounted supplementary fuses are required for each
heater circuit. These fuses are included in accessory
Single Point Boxes, with power distribution and fuse
blocks. The single point box will be installed directly
under the unit control box, just to the left of the partition
separating the indoor section (with electric heaters) from
the outdoor section. The Single Point Box has a hinged
access cover. See Fig. 30. The Single Point Box also
includes a set of power taps and pigtails to complete the
wiring between the Single Point Box and the unit's main
control box terminals. Refer to the accessory heater and
Single Point Box installation instructions for details on tap
connections on field- - installed electric heat accessory.
All fuses on 551J units are 60- - A. (Note that all heaters are
qualified for use with a 60- - A fuse, regardless of actual
heater ampacity, so only 60- - A fuses are necessary.)
Single Point Boxes Without Fuses —
Unit heater applications not requiring supplemental fuses
require a special Single Point Box without any fuses. The
accessory Single Point Boxes contain a set of power taps
and pigtails to complete the wiring between the Single
Point Box and the unit's main control box terminals. Refer
to accessory heater and Single Point Box installation
instructions for
field- - installed electric heat accessory.
CONTROL
BOX
BUSHING
SINGLE
POINT BOX
MOUNTING
SCREWS
DRIP BOOT
BRACKET
MOUNTING
SCREWS
POWER
WIRES
FOAM
BUSHING
HEATER
RELAYS
HEATER
MOUNTING
SCREWS
Fig. 30 - - Typical Single Point Installation
E A T E R
E A T E R
20
details on tap connections
0 0 1 A/B
1 0 1 A/B
on
C14253
0 0
0 0