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©2017 ZONEFIRST®
OPERATION
The H32P can be controlled by conventional single stage or
heat pump thermostats. Each thermostat can then call for
heating, cooling or the fan. When a thermostat calls the panel
will keep open the damper to the calling zone, if not already
open, close the dampers to the zone(s) not calling and
activate the appropriate HVAC equipment. When opposite
calls exist for both heating and cooling the panel will allow the
zones to automatically switch between the modes. When all
zones are satisfied the panel then looks for individual fan calls
from any zone and controls the dampers based on these calls
as well. When all zone thermostats are not calling for
heating, cooling or the fan, all dampers will return to a
normally open position.
Once 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 H32P 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 H32P 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 H32P will also activate the W 2 for second stage
heating. The Second Stage Timer is adjustable between 4
and 68 minutes after the first stage calls.
Once all zone thermostats are satisfied for heating and cooling,
the H32P 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
Heat call. 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 activates the fan when the heat is called.
FAN PURGE
– YES or NO –
This switch determine 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 Emer Heat 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
– ON OR OFF –
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
situations as well as when by-pass air is being directed back
into the return air duct.
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 H32P
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 H32P 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. Most all of the panel
configuration is done by setting the DIP switches in the top
right of the panel. Other functions come by wiring for specific
applications. Below is shown the most typical settings..
Review each function for your application
130
120
110
140
150
160
170
SYSTEM
– G/E OR HP
This switch sets the HVAC Output
operation. In G/E the Y1 makes as a Cool call and W1 as a
HIGH LIMIT
The ZPS and OAS (if used) each require two (2) wires to their
respective LAS and OAS terminals on the H32P panel.
