FORM 2316-FCA9/1/17
© 2017
Zonefirst®
3
board. There are 4 key-hole mounting points in each corner
of the case. The case has openings in the rear of the case as
well as the side for all wiring. Wiring can come from the
back as well as the side in order to make a neat installation.
OPERATION
The H32 can be controlled by conventional single stage or
heat pump thermostats. Each thermostat can then call for
heating, cooling or the fan. This panel can control single
stage gas-oil-electric heating and cooling, two stage heating
and cooling and most heat pumps. This panel can control
two stage/speed and dual/fossil fuel heat pumps.
When a call for either heating or cooling is made the panel
will open the damper(s) to the zone(s) calling, close the
damper(s) to those zones not calling, activate the
appropriate controls for heating or cooling, whichever is
being called and not accept any calls for the opposite mode.
Any calls for the opposite mode will be locked out until the
initial mode is either satisfied or a period of time has
elapsed that is sufficient for the first mode to satisfy, a
maximum of 20 minutes. A unique sequence determines
the time the unit has been running or needs to continue to
run in order to adequately provide conditioning for each
mode. If a particular mode has already been calling for 20
minutes or longer and an opposite call comes in the H32 will
immediately drop the mode, enter the purge mode in order
to dissipate the conditioned air into the zones calling before
switching over to provide the new conditioning call to its
zones.
When using the H32 to control two stage heating, the
second stage is controlled based upon time after the first
stage call from the thermostat. When any zone calls the
panel’s built
-in timer begins and after the set period of time
elapses the H32 will also activate the W2 for second stage
heating. The Second Stage Timer is adjustable between 4 to
68 minutes after the first stage calls. Once the second stage
is on, it will continue to run until the first stage is satisfied.
Once all zone thermostats are satisfied for heating and
cooling, the H32 can now accept Fan calls allowing
Continuous Air Circulation (CAC) in those zones where the
thermostat’s Fan Switch is set to ON. These zone dampers
will be Open while the dampers to the zones where the Fan
Switch is set to AUTO will be CLOSED.
When all zone thermostats are satisfied for both Heating
and Cooling, and all Fan switches are set to AUTO position,
the HVAC unit will be off and all zone dampers will return to
a normally open position. Once a zone calls for heating,
cooling or fan, the dampers to the calling zones remain open
and the dampers to the zones not calling will close.
Set-Up for Various HVAC Equipment
The H32 is factory set for conventional heating and cooling
operation. The panel only needs to be configured when
using with an electric furnace or heat pumps.
The panel configuration is done by setting the DIP switches
in the bottom left of the panel. Other functions come by
wiring for specific applications. Below is shown the most
typical settings. Review each function for you application.
SYSTEM
–
G/E OR HP
This switch sets the HVAC Output
operation. In G/E the Y1 operates as first stage cooling only.
In HP position Y1 makes as the compressor call for both
heating and cooling.
HP Type
–
CONV or FF
–
This switch is used to determine the
equipment output when the System switch is set to HP, this
switch determines if the output will be for a conventional
heat pump with electric back-up heat or fossil (dual) fuel
mode.
FAN IN HEAT
–
YES or NO
–
This switch will activates the Fan
on a call for Heat in the Yes position. In Off, the heating unit
must activate the fan when the heat is called.
FAN PURGE
–
YES or NO
–
This switch determines if the Fan
is kept on during the Purge Mode, after the end of each heat
or cool call.
STAT RV
–
O or B
–
When using HP type thermostats this
determines if the O or B terminal is wired to the W/OB
terminal on each thermostat to determine if the call if for
Heat (B) or Cool (O).
TSTAT
–
HC-HP
Switch determines if conventional Heat/Cool
thermostats or Heat Pump thermostats are being used for
ALL zones. A conventional HC stat would have separate W
and Y output for heating and cooling calls. A HP thermostat
uses Y for both a heat and cool call and the O or B is used to
determine whether the call is for Cooling (O) or Heating (B).
EM HEAT
–
This switch sets any heat call to call for the
Emergency Heat. The Red EM HEAT LED on the panel will
light only when this switch is ON. This is used when there is
no EH switch on the thermostats.
TEST
–
This switch accelerates the panel timings in order to
provide a quick checkout of all of the functions without
having to wait the full time for each sequence.
ZONE STAGING MODE
–
This switch is used to control how
the second stage of heating & cooling is determined. In the
OFF position, the second stage is controlled by the stage
timer setting. In the ON position, the second stage is
brought on based on the number of zones calling. When 2 of
the 3 zones are calling, the second stage will activate for
both heating and cooling.
Leaving Air and Outdoor Air Sensor
The Leaving Air Sensor, Model ZPS, is a remote sensor that is
located in the supply air duct to sense the Leaving Air
temperature of the HVAC Unit. The ZPS is a high limit
protection for the heating and a low limit protection for the
cooling. When zoning, the airflow through the HVAC Unit is
critical. The ZPS protects the equipment in low air flow
