Install Instructions

FORM 2316
4
The heating limit is adjustable from 110°F to 170°F. The cooling limit
is fixed at 45°F. When the ZPS senses heating above its set point, or
cooling below its set point, the H32 will drop both all stages of
heating or cooling. The ZPS must sense a 10°F fall for heating or rise
for cooling before re-activating the first stages of heating or cooling. If
two stage heating or cooling is being used the second stage timer will
start again once the first stage is re-activated.
The ZPS requires 2 wires from the sensor to the ZPS terminals on the
H32 panel.
Outdoor Air Sensor - OAS
The Outdoor Air Sensor is used only when using a Heat Pump with
Dual/Fossil Fuel back-up furnaces. The OAS senses the outdoor air
temperature and switches the heating control between the heat pump
and the fossil fuel furnace. The temperature set point for this is
adjustable on the Outdoor Balance Point (OBP) dial on the control
panel. It is adjustable from 5°F to 53°F.
Sta
ge Timer
The H32 has a built-in stage timer that eliminates the need and added
cost of using two stage thermostats. On a call for either heating the
timer begins. Setting the Stage Timer dial provides an adjustable time
delay of 5 to 21 minutes between the first and second stage calls.
PURGE TIME
The H32 has a built-in Purge Time after each call is satisfied and
provides a minimum off time before another call is initiated. The
Purge Time is set at 2minutes after all calls for a particular mode are
satisfied or when the Changeover Timer requires a changeover due to
opposing calls.
After all calls are satisfied or the changeover timer activates, the Purge
Timer begins and the heating or cooling, whichever was on, is
deactivated. Typically the fan may be running during this time and the
damper(s) to the last zone(s) calling will remain open to purge the
conditioned air only into those zones that were calling for the
conditioning. DIP Switch 5 can be set ON to keep the Fan running
during the Purge mode in order to prevent the fan cycling off and
back on between modes. In the instance where the Fan staying may
create a draft, and the frequency of opposite calls is minimal this
switch can be kept to OFF.
Mi
nimum On Timer
The H32 also has a minimum on time whenever the compressor
operates in order to prevent frequent short cycling. Once there is a
call for cooling or the compressor on a heat pump, the H32 will hold
that call for a period of 2 minutes.
CH
ANGEOVER TIMER
Whenever a call is made for either heating or cooling, the changeover
timer is activated in order to track the amount of time heating or
cooling is on. When an opposite call is made after a first call is made,
the changeover timer calculates the amount of time the unit has
already been supplying the first mode in order to determine how long
it will hold off the opposite call. If an opposite call is made shortly
after the first call, the opposite call may be held off for as much as 20
minutes. If the first call or subsequent calls for the first call mode has
had that mode operating for up to 20 minutes already and an
opposite call comes in after 20 minutes, the changeover timer will
immediately recognize the opposite call, shutting off the current
mode, enter the purge mode and automatically switch to the opposite
mode.
The longer a call has been running up to 20 minutes, the shorter the
wait time will be for an opposite call. If a call is over 20 minutes and
an opposite call is made the changeover will be immediate following
the purge time. This intelligent changeover timing makes the H32
unique to any other zoning system.
CHECKOUT
The H32 has unique features that simplify the checkout of the system
and has LED readouts that constantly indicate the system operation.
Once 24 Volt Power is applied to the panel the Green Power LED will
illuminate. This will stay illuminated constantly when power is applied.
The System LED will provide several different indications based upon
color and if it is flashing.
First Stage Heat Call – RED
Second Stage Heat Call RED Flash 1/Second
Heat Limit Red/Amber Alternate Flashing
First Stage Cool Call - GREEN
Second Stage Cool Call GREEN Flash 1/second
Cool Limit - GREEN/Amber Alternate Flashing
FAN ON - AMBER
PURGE - AMBER Flashing
Each zone has its own small Green indicator LED next to each zone
relay. This light is lit when the specific zoning is calling for the mode
shown on the System LED.
WIR
ING
The H32 is very simple to wire and requires only a minimum number
of connections. The H32 terminal blocks are color coded and screw-
less for all wires to be easily pushed into their respective terminal by
de-pressing the button for each point and releasing once the wire is
seated. (Solid wire can often just be pushed into the terminal without
de-pressing the button.) To remove the wire, just press its button again
and remove the wire.
110
120
130
140
150
160
170
HIGH LIMIT
LAS
LAS
OAS
OAS
Leaving Air Sensor
In Supply Air Duct
Outdoor Air Sensor only used with
Fossil/Dual Fuel Applications
5
13
21
29
37
45
53
OBP
5
8
9
12
15
18
21
STAGE TIMER
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