Zonefirst H32P Uni-Zone User manual

H32P Uni-Zone
™
Model H32P
for use with Plug-In Dampers Only
Installation and Operating Instructions
Controlling Y our Comfort Room By Room

H32P PANEL FEATURES
System Mode Power Indicator
HVAC
Equipment
Terminals
Terminal Blocks
for Zone
Thermostats
Leaving
Air Sensor
24VAC
Transformer
Outdoor
Air Sensor
Zone Damper
Test Buttons
Mode DIP
Switches
Outdoor
Balancing Point
Stage Timer
Adjustment
Heating Limit
Adjustment
Zone Damper
Terminals and LED
Indicators
Table of Contents
Installation…………………………………..2
Operation …………………………………...3
Set-Up for Various HVAC Equipment … ....3
Leaving Air Sensor…….…………………...3
Stage Timer …….…………………………. 4
Damper Wiring…….……………………..…4
Checkout .………………….…………….….4
Thermostat Wiring…………………………..5
Troubleshooting …………………………….6
Wiring Diagram ……………………………..6
INSTALLATION
The H32P Control is a three (3) zone control panel that can
be used with conventional single stage and two stage heating
and cooling, heat pumps with or without dual fuel and two
speed heat pumps for up to three stages of heating. The
H32P panel is the central control panel that all zone dampers,
zone thermostats, Heat Pump Controls, power transformer,
Outdoor Air (OAS) and Leaving Air Sensor (ZPS) are wired.
When installing the H32P panel it is important to pick a central
location where it is most convenient to bring all the wires.
Most often this is at the furnace or air handler. It is often the
most convenient location and closest to power, the HVAC unit
controls and the zone dampers when typically located at or
near the plenum.
The H32P panel case is made of sturdy ABS plastic and can
be mounted to any flat surface. It is recommended that the
panel be mounted to a wall or return plenum and NOT on the
furnace or plenum where it will be in contact with the
excessive hot temperatures. The panel can be located in an
attic space or in an enclosed cabinet of a rooftop unit. Insure
the panel is not in direct exposure to the elements.
The cover easily removes from the case by pulling firmly and
separating the cover from the case exposing the circuit 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.
2
©2017 ZONEFIRST®

3
©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 W2 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.

4
©2017 ZONEFIRST®
29
21 37
13 45
5 53
OBP
Leaving Air
Sensor
In Supply Air Duct
LAS
LAS
OAS
OAS
Outdoor Air Sensor only used with
Fossil/Dual Fuel Applications
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. It is suggested that this be set just
above freezing to avoid the heat pump from potentially going
into Defrost mode.
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 H32P unique to any other
zoning system.
CHECKOUT
The H32P 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.
Stage Timer
The H32P has a built-in stage timer that eliminates the need
and added cost of using two stage thermostats. On a call for
either heating or cooling the timer begins. Setting the Stage
Timer dial provides an adjustable time delay of 4 to 68
minutes between the first and second stage calls and the
same between a second stage and third stage call of heating,
if used.
PURGE TIME
The H32P 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 2 minutes 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 6 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.
Minimum On Timer
The H32P 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 H32P will hold that call for a period of 2
minutes.
CHANGEOVER 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 existing, the changeover timer calculates the
Zone Dampers –The H32P provides DC power to
ZONEFIRST’s exclusive Plug-In Zone Dampers. These
dampers use and are supplied with a modular cord that is
complete with RJ11 jacks on each end of a 25’ cable for each
zone damper. Up to 10 dampers can be wired to each zone.
The panel has a GREEN LED to indicate when the damper
should be open.
ZONE DAMPER
The System LED will provide several different indications based
upon color and if it is flashing.
Heat ON - RED
Second Stage Heat - RED Flashing, (1 flash per
sec.)
Heat limit - Intermittent RED/AMBER Flashing
Emergency Heat - RED Flashing, (2 flashes per
sec.)
Cool ON - GREEN
Second Stage Cool - GREEN Flashing, (1 flash per
sec.)
Cool Limit - Intermittent GREEN/AMBER 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.
WIRING
The H32P is very simple to wire and requires only a minimum
number of connections. The H32P 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.

5
©2017 ZONEFIRST®
ZONE THERMOSTAT TERMINALS
ZONE
THERMOSTAT TERMINALS
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 each type of
thermostat.
WIRING DIAGRAM 1 –Conventional Thermostats
WIRING DIAGRAM 4 - HVAC Equipment –Dual Fuel
Heat Pump with Fossil Fuel Back-Up
ZONE THERMOSTAT
C W R Y G
E
G
Y
R
W/OB
C
WIRING DIAGRAM 5 –Single Speed Compressor
WIRING DIAGRAM 2 –Heat Pump Thermostat
ZONE THERMOSTAT
C O/B R Y G E
E
G
Y
R
W/OB
C
WIRING DIAGRAM 6 –Two Speed Compressor Heat
Pump
WIRING DIAGRAM 3 - HVAC Equipment –Up to Two
Stage Heating and Single Stage Cooling

6
©2017 ZONEFIRST®
TROUBLESHOOTING
The H32P 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 H32P. 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 H32P. 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 checkout the dampers, the panel has a GREEN LED for
each zone. This illuminates when the dampers are to be
OPEN, either on a call or when all zones are satisfied. The
damper position is confirmed by the bi-color LED on the
motor. When the panel is Green, the motor LED must be
Green also indicating the damper being open. When the panel
LED is not lit the motor should be closed and this is confirmed
by the damper LED being Red.
Wiring Diagram
6 Aspen Drive –Randolph, NJ 07869-1103 USA
Telephone: [phone] | Fax: [phone]
www.zonefirst.com | [e-mail]