Installation Guide
69-2199—09 4
The DS/BK terminal is used with a variable-speed fan. If
the HVAC equipment has a DS, BK, ODD, or DHUM ter-
minal, wire that terminal to the HZ322 DS/BK terminal.
When 2 or 3 zones are calling for cooling this terminal
will be energized which will run the blower fan at the
normal speed. When only 1 zone is calling for cooling
the fan runs at a reduced speed which will require less
air to be by-passed. Refer to HVAC equipment manufac-
turer instructions.
For oil heat with a separate transformer for cooling,
remove this jumper. For other systems leave jumper
in place and wire to HVAC R terminal with 18 gauge
solid wire.
Connect DATS as shown.
For the placement of DATS in supply duct and
troubleshooting assistance with the DATS, see the Discharge
Air Temperature Installation Instructions Form Number
69-1521.
5
Connect equipment as shown here and on page 5 and 6.
6
C7735A1000
M28024
SENSOR
DATS
DATS
8
Connect a dedicated transform-
er as shown.
DEDICATED
TRANSFORMER
R
C
M24806
R
C
POWER
L1
(HOT)
L2
RH
RC
W1/E
W2
Y1
Y2
G
O
B
DS/BK
M28025
HVAC
FAN RELAY
24 VOLT TRANS.
G
Y
Y2
C
R
W
COMPRESSOR
RELAY
W2
EQUIPMENT
WIRING
Fig. 7
Fig. 8
Fig. 10
7
When a wireless thermostat, Portable Comfort Control,
wireless outdoor air temperature sensor, or other
RedLINK™ wireless device is used, wire the THM4000
Wireless Adapter Module to the ABCD terminals on the
zone panel.
CAUTION:
Only the THM4000R can be wired to the A-B-C-D terminals on the HZ322. Do not wire
the A-B-C-D terminals of the THM5320R or THM5421R Equipment Interface Module to the A-B-C-D
terminals on the HZ322 zone control panel. Doing so will damage the components.
M28193
A
B
C
D
WIRELESS
ADAPTER
WIRELES
S
CONNECT
POWER
THM4000R
CONNECTED
WIRELESS SETUP
Fig. 9
