Carrier WeatherMaster Series - Humidi- -Mizer R System Control Connections; Humidi- - Mizer - Space RH Controller

23
For CRHEATER128B00--129B00 only — Connect the
ORN lead from Heater Relay 1 (HR1) to terminal TB4--1.
For 2 stage heating connect the VIO lead from Heater
Relay 3 (HR3) to terminal TB4 --2. For 1 stage heating
with CRHEATER128B00 or CRHEATER129B00 connect
the ORN lead from HR1 and the VIO lead from HR3 to
terminal TB4--1. Connect the BRN lead from HR1 to
TB4--3. See Fig. 34.
CTB
CONTL
BOARD
ORN
BRN
Field
Connections
for Field-Installed
Electric Heat
LS: Primary Limit Switch
2
3
12
31
VIO
ORN VIO BRN
BRNVIO
2
TB4
VIO
HR3
HR1
ORN BRN
Elec Htr
ORN
For simplicity, not all control
wiring internal to the electric
heaters is shown.
LS
a50--- 9607
Fig. 34 -- Optional or Accessory Electric Heater Control
Connections for CRHEATER128B00--129B00 Only
Humidi--MiZer
R
System Control Connections
Humidi--MiZer – Space RH Controller —
NOTE: The Humidi--MiZer system is a factory--installed
option which is only available for units equipped with
belt--drive motors.
The Humidi--MiZer dehumidification system requires a
field--supplied and installed space relative humidity (RH)
control device. This device may be a separate humidistat
control (c ontact closes on rise in space RH a bove control
setpoint) or a combination thermostat--humidistat control
device such as Carrier’s Edge
R
Pro Thermidistat with
isolated conta ct set for dehumidification control. The
humidistat is normally used in applications where a
temperature c ontrol is already provided (units with
PermierLinkt 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
pos t (see Fig . 28 on pag e 21) to the 24--v barrier located
on the left side of the control box. The raceway pro-
vides the UL--required clearance between high--voltage
and low--voltage wiring.
3. Use wire nuts to connect humidistat cable to the leads
in the low–volta ge wiring (a s shown in Fig. 37), con-
necting PNK to PNK and PNK/BLK to PNK/BLK.
To connect the Thermidistat device (33CS2PPRH--01):
1. Route the Thermidi stat multi--conduct or 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. 28) 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. 38).
The dry contacts must be wired between CTB
terminal R and the PNK/BLK lead to the LTLO (low
temperature cooling lockout) switch with
field--supplied wire nuts. Refer to the installation
instructions included with the Carrier Edge Pro
Thermidistat device for more information.
% RELATIVE HUMIDITY
C09295
Fig. 35 -- Accessory Field--Installed Humidistat
(HL38G029)
®
C09296
Fig. 36 -- Edge Pro Thermidistat (33CS2PPRH--01)