Install Instructions
FORM 2316
5
Zone Dampers – The H32 can power any 24VAC damper, either 2
wire or 3 wire. See specific wiring instructions with the damper or
inside panel cover. The three damper motor contacts are for 24VAC
power are COM (Common), OPN (Open) and CLS (Closed)
Zone Thermostats – The thermostats wiring will be for Conventional
single stage (Y-G-R-W-C) or Heat Pump (Y-G-R-E-C and O or B). See
Wiring Diagram 1 and 2 for each type of thermostat.
WIRING DIAGRAM 1 – Conventional Thermostats
WIRING DIAGRAM 2 – Heat Pump Thermostat
WIRING DIAGRAM 3 - HVAC Equipment – Conventional Single
Stage and Two-Stage Equipment
WIR
ING DIAGRAM 5 -
.Single Speed Compressor Heat Pump
WIRING DIAGRAM 6 - Two Speed Compressor Heat Pump
TR
OUBLESHOOTING
The H32 is a very simple control to troubleshoot, especially with the
LED indicators. The only other device needed is a simple Volt/Ohm
meter. Almost all problems can be traced to an external component
or wiring to the H32. The following procedures can help isolate the
problem.
Zone(s) Not Calling
Each zone has a Green LED next to the zone relay when it is calling
and that calling is being recognized by the H32. If a zone is supposed
to be calling and the Zone LED is not on, check for 24VAC across the
thermostat terminal C and the Y, if a Cool call, W if a Heat Call, or G if
a Fan call. If there is no voltage here at the panel the panel is not
getting the signal from the thermostat. The problem is mis-wiring, a
broken wire or a problem in the thermostat. To check the zone on
the panel, place jumper from R to Y, R to W or R to G to see that the
panel is operating properly.
Zone(s) Will Not Shut Off
If a zone will not stop calling, the Zone LED should still be on.
Depending on the call disconnect the Y, W or G wire from the
terminal strip. The zone will drop out. Check the thermostat wiring
for a mis-wiring or short that keeps the zone calling.
Damper Motor Checkout
To check out the dampers, the panel provides 24VAC to the COM
and OPEN. When the damper is to be closed, there will be 24VAC to
COM and CLOSE. When any zone is calling and its Green LED is ON,
there is 24VAC across COM and OPEN. The only time a damper will
close is when anther zone is calling and its zone is not calling. In this
instance there will be 24VAC across COM and CLOSE.
COM
OPN
CLS
M1
M4
M6
C W R Y G
W2/E
G
Y
R
W/OB
C
CONVENTIONAL THERMOSTAT
C O/B R Y G W2/E
W2/E
G
Y
R
W/OB
C
HEAT PUMP THERMOSTAT
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