FORM 320251-0803
©2007 ZONEFIRST
™
4
The ZPS and OAS (if used) each require two (2) wires to their
respective LAS and OAS terminals on the H32P panel.
LAS
LAS
OAS
OAS
Leaving Air Sensor
In Supply Air Duct
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.
5
13
21
29
37
45
53
OBP
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 a adjustable time delay of 5 to 21 minutes between the
first and second stage calls and the same between a second
stage and third stage call of heating, if used.
5
8
9
12
15
18
21
STAGE TIMER
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 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.
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
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.
The System LED will provide several different indications based
upon color and if it is flashing.
Heat ON – RED
Heat Limit – RED Flashing
Cool ON - GREEN
Cool Limit - GREEN 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.
Zone Dampers
– The H32PP provides Dc power to
ZONEFIRST’s exclusive Plug-In Zone Dampers. These dampers
use a modular cord, supplied with each damper and 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
ZONE DAMPER
