FAQs
TrueZONE
™
HZ432
How does the HZ432 differ from the TZ-4?
The TrueZONE
™
HZ432 replaces the TZ-4 panel. The
HZ432 is designed to install faster and reduce the number
of callbacks with:
flexibility to installer
How does the dual fuel feature in the HZ432 work?
The HZ432 controls heat pump and fossil fuel equipment without the need for a separate
fossil fuel kit. This function requires the use of the C7089U outdoor temperature sensor.
The balance point is set from 0° to 50° F in the advanced configuration. When the dual
fuel changeover is configured for OT, the panel will use the heat pump when the outdoor
temperature is above the configured balance point. The panel will use fossil fuel when the
outdoor temperature is below the configured balance point. When the dual fuel changeover
is configured for multistage, the panel will also switch over at balance point, however when
the OT temperature is above the balance point, the panel will switch to fossil fuel if there is
a call for second stage heat. The panel will stay in fossil fuel mode for three hours before
switching back to the heat pump.
How do you add more than four zones to the HZ432?
The HZ432 controls up to four zones with one panel. You can expand up to 32 zones
by adding TAZ-4 panels.
TrueZONE
™
Panels
TrueZONE
™
HZ322
How does the HZ322 differ from the EMM-3U?
The TrueZONE
™
HZ322 replaces the EMM-3U panel. The HZ322 is
designed to install faster and reduce the number of callbacks with:
to installer
zones calling
dampers per zone
TrueZONE HZ311
How does the HZ311 differ from the EMM-3?
The TrueZONE HZ311 replaces the EMM-3 panel. The HZ311 is
designed to install faster and reduce the number of callbacks with:
dampers per zone
TrueZONE
™
HZ322 and HZ432
How are the panels configured with no dip switches?
An easy-to-follow, digital display uses real language to guide installer through four
simple steps for system setup:
1) Select equipment type
2) Select heat/cool stages
3) Select number of zones
4) Select stage control
How does the checkout process work?
TrueZONE
™
panels have a checkout procedure that standardizes the checkout process
so every installer checks out in the same way every time and ensures that all zones are
checkout because the entire zoning system can be verified from the panel.
What is multi-stage OT temp lockout?
When the panel is configured for multi-stage equipment but not dual fuel equipment, an
outdoor temperature sensor can be used to lock out second- and third-stage heat when
the outdoor temperature is above the OT lockout temp.
How does the stage timer work?
The panels are set to upstage after 5 to 60 minutes. Each zone has its own timer to keep
track of how long it has been calling. The zone control panel stages the equipment based
on the zone that is calling with the highest stage. This patented feature allows the panel
to downstage as needed by zone demand. Other zone control panels will hit the highest
stage and remain there for long periods of time.
What does the DATS multistage feature do?
If the discharge air becomes close to the high or low limit, the panel will only use the first
stage of equipment. This reduces equipment cycling and increases comfort.
What are the different ways I can control multi-stage equipment
with TrueZONE?
Staged HVAC equipment (i.e. heat pumps, multi-stage air conditioners and furnaces)
can be controlled three ways. A multi-stage or heat pump thermostat can be used to
energize second- and third-stage (HZ432) through the W2, W3 and Y2 terminals. A
stage timer can be used to upstage the equipment. Typically a single-stage thermostat
is used in this case; second- and third-stages can be controlled through different
methods. Percentage of zones calling energizes second-stage cooling when 50 percent
or more zones are calling. This feature energizes second-stage heat when more than
25 percent of zones are calling. Third-stage of heat is energized when more than 50
percent of zones are calling. When configuring the panel, staging can be set up the
same or independently by each zone.