12
Table 4 — Heat Anticipator Settings
*Heater capacity (kW) is based on heater voltage of 240 v, 480 v or 575 v. If power distribution voltage to unit varies from rated
heater voltage, heater kW will vary accordingly.
Step 6 — Adjust Factory-Installed Options
HUMIDI-MIZER™ ADAPTIVE DEHUMIDIFICATION
SYSTEM — Humidi-MiZer adaptive dehumidification system
operation can be controlled by field installation of a Carrier-
approved humidistat (Fig. 11). To install the humidistat:
NOTE: A light commercial Thermidistat™ control (Fig. 12)
can be used instead of a humidistat if desired. The Thermidis-
tat control includes a thermostat and a humidistat. The humi-
distat is normally used in applications where a temperature
sensor is already provided (units with PremierLink™ control).
1. Route humidistat cable through hole provided in unit cor-
ner post.
2. Feed wires through the raceway built into the corner post
to the 24-v barrier located on the left side of the control
box. See Fig. 10. The raceway provides the UL-required
clearance between high and low-voltage wiring.
3. Use a wire nut to connect humidistat cable into low-
voltage wiring as shown in Fig. 13.
To install a Thermidistat™ device:
1. Route Thermidistat cable through the hole provided in
unit corner post.
2. Feed the wires through the raceway built into the corner
post to the 24-v barrier located on the left side of the con-
trol box. See Fig. 10. The raceway provides the UL-
required clearance between high and low voltage wiring.
3. A field-supplied relay must be installed between the
Thermidistat device and the Humidi-MiZer circuit
(recommended relay: HN612KK324). The relay coil is
connected between the DEHUM output and C (common)
of the unit. Refer to Fig. 14. The relay controls the
Humidi-MiZer solenoid valve and must be wired be-
tween the Humidi-MiZer fuse and the low-pressure
switch. Refer to the installation instructions included with
the Carrier Light Commercial Thermidistat device for
more information.
DISCONNECT SWITCH — The optional disconnect switch
is non-fused. The switch has the capability of being locked in
place for safety purposes.
UNIT
UNIT VOLTAGE
208/230 460 575
Heater
kW*
Configuration
Heater
kW*
Configuration
Heater
kW*
Configuration
1-Stage
2-Stage
1-Stage
2-Stage
1-Stage
2-Stage
Stage 1 Stage 2 Stage 1 Stage 2 Stage 1 Stage 2
50HJ
10.4, 16.0 0.3 NA NA 13.9, 16.5
0.3 NA NA 17.0, 34.0 0.3 NA NA
24.8, 32.0 0.6 0.3 0.3 27.8, 33.0
42.4, 50.0 0.9 0.6 0.3 41.7, 50.0 0.6 0.3 0.3 51.0 0.6 0.3 0.3
Fig. 11 — Accessory Field-Installed Humidistat
% RELATIVE HUMIDITY
Fig. 12 — Light Commercial Thermidistat Device
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