Carrier WeatherExpert 50LC - Single Point Boxes and Supplementary Fuses; Single Point Boxes Without Fuses; Low- - Voltage Control Connections

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TRACK
FLANGE
C08135
Fig. 36 -- Typical Module Installation
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CONTROL
BOX
BUSHING
SINGLE
POINT BOX
MOUNTING
SCREWS
FOAM
BUSHING
DRIP BOOT
BRACKET
MOUNTING
SCREWS
HEATER
RELAYS
POWER
WIRES
HEATER
MOUNTING
SCREWS
C14253
Fig. 37 -- Typical Single Point Installation
Table 2 – Heater Model Number
Bare Heater Model Number C R H E A T E R 0 0 1 A 0 0
Heater Sales Package PNO
Includes:
Bare Heater
Carton and packing materials
Installation sheet
C R H E A T E R 1 0 1 A 0 0
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 elec tric heaters) from
the outdoor section. The Single Point Box has a hinged
access cover. See Fig. 37. The Single Point Box also
includes a set of power taps and pigtails to complete the
wiring betwe en 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 or field--installed electric heat accessory.
All fuses on 50LC 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 —
Some 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 details on tap connections or
field--installed electric heat accessory.
Low--Voltage Control Connections —
Pull the low--voltage control leads from the heater module(s)
-- VIO and BRN (two of each if two modules are installed;
identify for Module #1) -- to the 4--pole terminal board TB4
located on the heater bulk head to the left of Heater #1.
Con nect the VIO lead from Heater #1 to terminal TB4--1.
Fo r 2 stage heating, connect the VIO lead from Heater #2 to
terminal TB4--2. For 1 stage heating with 2 heater modules
conn ect the VIO lead from both Heater #1 and #2 to
terminal TB4--1. C on nect both BRN leads to terminal
TB4--3. See Fig. 38.
INTEGRATED
STAGING
CONTROL
(ICS)
BOARD
a50--- 9609
Fig. 38 -- Op tiona l or Access ory Electric Heater
Control Connections