Humidi- - Mizer R Control Connections; Humidi- - Mizer - Space Rh Controller - Carrier 48HC Installation Instructions Manual

Humidi- -MiZer Control Connections
R
Humidi- - MiZer – Space RH Controller —
NOTE: The Humidi- - MiZer is a factory installed option
which is only available for units equipped with belt- - drive
motors. Humidi- - MiZer is not available for single phase
(- - 3 voltage code) models.
The Humidi- - MiZer dehumidification system requires a
field- - supplied and - - installed space relative humidity
control device. This device may be a separate humidistat
control (contact closes on rise in space RH above control
setpoint) or a combination thermostat- - humidistat control
device such as Carrier's EDGE
isolated contact set for dehumidification control. The
humidistat is normally used in applications where a
temperature control is already provided (units with
PremierLinkt control).
To connect the Carrier humidistat (HL38MG029):
1. Route the humidistat 2- - conductor cable (field- - sup-
plied) through the hole provided in the unit corner
post.
2. Feed wires through the raceway built into the corner
post (see Fig. 36) to the 24- - v barrier located on the
left side of the control box. The raceway provides the
UL- - required clearance between high- - voltage and
low- - voltage wiring.
3. Use wire nuts to connect humidistat cable to two
PINK leads in the low–voltage wiring as shown in
Fig. 39.
To connect the Thermidistat device (33CS2PPRH- - 01):
1. Route the Thermidistat multi- - conductor thermostat
cable (field- - supplied) through the hole provided in
the unit corner post.
2. Feed wires through the raceway built into the corner
post (see Fig. 36) to the 24- - v barrier located on the
left side of the control box. The raceway provides the
UL- - required clearance between high- - voltage and
low- - voltage wiring.
3. The Thermidistat has dry contacts at terminals D1
and D2 for dehumidification operation (see Fig. 40).
The dry contacts must be wired between CTB
terminal R and the PINK lead to the LTLO switch
with field- - supplied wire nuts. Refer to the installation
instructions included
Thermidistat device (Form 33CS- - 65SI or latest) for
more information.
R
Pro Thermidistat with
with the Carrier Edge
Fig. 37 - - Accessory Field- - Installed Humidistat
Fig. 38 - - EDGE Pro Thermidistat
21
% RELATIVE HUMIDITY
C09295
®
C09296