Carrier 48TC**16 User Manual

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Humidi--MiZer

Control Connections

Humidi--MiZer – Space RH Controller —

NOTE: The Humidi--MiZer is a factory installed option.

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

Pro Thermidistat with

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--supplied)

through the bushing the unit’s louvered end panel (see

Fig. 39).

2. Route the cable through the snap--in wire tie and up to

the web bushing near the control box.

3. Feed the cable through the bushing and into the

bottom left side of the control box after removing one

of the two knockouts in the corner of the box. Use a

connector to protect the cable as it enters the control

box.

4. Use the connector and the wire tie to reduce any slack

in the humidistat cable to ensure that it will not be

damaged by contact with the condenser coil (see Fig.

39).

5. Use wire nuts to connect humidistat cable to two

PINK leads in the low–voltage wiring as shown in

Fig. 42.

To connect the Thermidistat device (33CS2PPRH--01):

1. Route the Thermidistat multi--conductor thermostat

cable (field--supplied) through the bushing the unit’s

louvered end panel (see Fig. 39).

2. Route the cable through the snap--in wire tie and up to

the web bushing near the control box.

3. Feed the cable through the bushing and into the

bottom left side of the control box after removing one

of the two knockouts in the corner of the box. Use a

connector to protect the cable as it enters the control

box.

4. Use the connector and the wire tie to reduce any slack

in the thermostat cable to ensure that it will not be

damaged by contact with the condenser coil (see Fig.

39).

5. The Thermidistat has dry contacts at terminals D1

and D2 for dehumidification operation (see Fig. 43).

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 with the Carrier Edge

Thermidistat device (Form 33CS--65SI or latest) for

more information.

% RELATIVE HUMIDITY

C09295

Fig. 40 -- Accessory Field--Installed Humidistat

C09296

Fig. 41 -- EDGE Pro Thermidistat

48TC**16

Questions and Answers:

C
Cody AcostaJul 29, 2025
What to do if my Carrier 48TC**16 Air Conditioner has two devices with the same ARC156 network address?
- S
  Scott DonovanJul 29, 2025
  If two or more devices on your network have the same ARC156 network address, change the network address of one of the devices.