FAQs

50-9694 PM
July 2008
© 2008 Honeywell International Inc.
general QUESTIONS
What are the differences between the available
TrueZONE
™
models?
HZ311 TrueZONE
™
panel controls up to 3 zones on single stage
1 heat/1 cool systems.
HZ322 TrueZONE panel controls up to 3 zones of heat pump or
conventional equipment with 1 or 2 stages heat and cool up to 2H/2C systems.
HZ432 TrueZONE panel controls from 2 to 32 zones of heat pump,
conventional or dual fuel equipment with up to 3 heat/2 cool systems.
What type of thermostat do I need to use?
TrueZONE panels work with virtually any Honeywell and other brand single-stage,
heat pump or multi-stage thermostats.
How does the wiring and installation differ from existing
panels?
Push-in terminals with easy-to-read, color-coded labels offer quick wire installation
with no screws. Simply insert the wire into the terminal and press release button
to remove the wire. Pressing the release button is not necessary when inserting
the wire. Numerous wire paths allow wires to be routed to terminals from the sides,
top and bottom of panel. Wires can even be run behind the panel, which makes
installation clean and professional looking. Anchor points are provided for zip ties
for clean installation.
What size of transformer can be used with the panels?
TrueZONE kits ship with a 40 VA transformer; however, a 75 VA transformer may be
used on all new panels to control multiple dampers per zone.
Will the panels work with variable speed blowers?
TrueZONE panels are compatible with variable speed blowers. By using the DS/BK
terminal, blower speed is reduced when one zone is calling.
What is different about the terminal blocks on the panels?
TrueZONE panels use push-in terminal blocks that wire in literally half the time
compared to screw terminals — with no screwdriver required. Plus, wires lock in
to the terminals for a tight fit. If removal is necessary, simply push down on the top
of the terminal block to release. Color-coded labels clearly indicate the function of
each terminal block.
What type of support is available if I need help?
Honeywell backs your zoning efforts with a 5-year warranty, a dedicated toll-free
zoning hotline (1-800-TAT-TEMP), local zoning specialists, training, free literature
and more.
What is advanced setup and is it required?
Most installations can be setup in four easy steps:
1) Select equipment type
2) Select heat/cool stages
3) Select number of zones
4) Select stage control by zone
Advanced setup allows the installer to change default settings. In most applications,
advanced setup is not necessary.
general QUESTIONS continued
What are the copper-colored pads near each wiring terminal?
Use these pads to check for voltage with a voltmeter instead of placing the probe inside
the terminals.
What is the best place to mount the panels?
All panels are eight inches wide, giving the installer the ability to mount TrueZONE™
panels anywhere — on the return duct, studs or wall next to the system. Plus, clearance
is provided for a hex driver so virtually any screw can be used to mount.
What is the minimum and maximum operating temperature
of the panels?
The temperature rating is from -40° to 165° F, which is the highest ambient temperature
rating of any zone panel on the market. TrueZONE panels operate flawlessly in hot attics.
Plus, all electronics components are surface-mounted and completely enclosed, ensuring
protection and durability.
How do the DS/BK terminals on the panels operate?
The DS/BK terminal is used to lower the fan speed of a variable speed blower when few
zones call. This terminal is wired to DS, BK, ODD or DEHUM on the equipment. On the
HZ311 and HZ322 this feature will reduce blower speed when one zone is calling for
cooling. On the HZ432 this feature will reduce blower speed when one zone is calling
unless there are more than four zones. When more than four zones are present, the blower
speed will be reduced when 25 percent or fewer zones are calling. When low fan speed
is desired by the panel there is 0 Vac at the DS/BK terminal, and when high fan speed is
desired there is 24 Vac at the DS/BK terminal.
How many dampers can I have in one zone with panels?
To determine the maximum number of dampers per zone, divide the VA of the damper
actuator by 28.8 VA (100° F) or 16.8 VA (160° F). To size the system transformer, add the VA
of all dampers in the system to the VA draw of the panel (HZ311 – 6.25VA, HZ322 – 10 VA,
HZ432 – 10 VA).
TrueZONE
™
Panel
Frequently Asked Questions
THERMOSTATS ZONING AIR CLEANERS HUMIDIFIERS DEHUMIDIFIERS ULTRAVIOLET SYSTEMS VENTILATION WATER SOLUTIONS
Increase Your Understanding of
TrueZONE
™
With These Answers
to Common Questions