Humidi-Mizer ® Control Connections - Carrier WeatherMaster Series Installation Instructions Manual

CTB
CONTL
BOARD
2
VIO
3 ORN
12
BRN
ORN
TB4 1
VIO
Field
Connections
for Field-Installed
Electric Heat
Fig. 36 — Optional or Accessory Electric Heater
Control Connections
(Except CRHEATER128B00-129B00)
CRHEATER128B00-129B00 Only
Connect the ORN lead from Heater Relay 1 (HR1) to ter-
minal 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 ter-
minal TB4-1. Connect the BRN lead from HR1 to TB4-3. See
Fig. 37.
CTB
CONTL
BOARD
2
VIO
3
ORN
12
BRN
ORN
1
TB4
ORN
Field
Connections
for Field-Installed
Electric Heat
For simplicity, not all control
wiring internal to the electric
heaters is shown.
Fig. 37 — Optional or Accessory Electric Heater
Control Connections for CRHEATER128B00-129B00
VIO BRN
2 3
VIO BRN BRN
Elec Htr
VIO HR2 BRN
VIO HR1 BRN
HR1: On Heater 1 in Position #1
HR2: On Heater 2 in Position #2 (if installed)
VIO BRN
2 3
VIO BRN
Elec Htr
VIO
HR3
LS
ORN BRN
HR1
LS: Primary Limit Switch
Only
HUMIDI-MIZER CONTROL CONNECTIONS
®
Humidi-MiZer Space RH Controller
®
NOTE: The Humidi-MiZer
which is only available for units equipped with belt-drive mo-
tors.
The Humidi-MiZer
field-supplied and field-installed space relative humidity con-
trol 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. See Fig. 38 and Fig. 39. The hu-
midistat is normally used in applications where a temperature
control is already provided (units with PremierLink™
control).
Fig. 38 — Accessory Field-Installed Humidistat
Fig. 39 — Edge
To connect the Carrier humidistat (HL38MG029):
1. Route the humidistat 2-conductor 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. 31 on page 20) 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 the leads in
the low–voltage wiring (as shown in Fig. 40), connecting
PNK to PNK and PNK/BLK to PNK/BLK.
22
® system is a factory-installed option
dehumidification system requires a
®
% RELATIVE HUMIDITY
®
®
Pro Thermidistat