HZ221 TrueZONE
1 69-2200—03
SPECIFICATIONS AND ACCESSORIES
Input Ratings:
Voltage: 18-30 VAC 50/60 Hz transformer of 40 VA
or more.
Current Draw:
Zone Panel: 6.25 VA max.
All VA specifications at 24 VAC.
Wiring:
18–20-gauge solid (not stranded) wire.
Humidity Ratings:
5% to 90% RH non-condensing.
Temperature Ratings:
Shipping: -20° to 150°F (-29° to 66°C)
Operating: -40° to 165°F (-40° to 74°C)
Dimensions:
See below.
Emissions:
Complies with FCC Class B, part 15 requirements.
M24742A
8 (203)
8-1/8
(206)
1-55/64
(47)
HZ221 TrueZONE panel dimensions in in. (mm).
RECOMMENDED THERMOSTATS, DAMPERS, AND
ACCESSORIES
The following are suggested thermostats, dampers, and
accessories for use with the TrueZONE panel.
Table 1. Recommended Thermostats.
Compatible thermostats*
TH4210U2002 (Programmable or non-programmable)
TH6210U2001 (Programmable or non-programmable)
TH6220U2000 (Programmable or non-programmable)
TH6320U2008 (Programmable or non-programmable)
TH6220WF2006 (Wi-Fi)
TH6320WF2003 (Wi-Fi)
TH8321WF1001 (Wi-Fi)
THX321WFS2001W (Wi-Fi)
* Note: The HZ221 supports a heat pump with either a
heat or cool reversing valve, but the thermostats MUST
be configured for a heat pump with cool reversing valve
to correctly communicate to the zone panel.
Table 2. Recommended Dampers.
Type
Damper
Round
Rectangular
Zone
Spring-open/
power-closed
ARD
ZD
Zone
Power-open/
power-closed
MARD/RRD
Bypass Static pres-
sure regulating
damper
CPRD
Table 3. Maximum Dampers.*
Ambient Temp. Maximum Damper VA per Zone
100°F (38°C)
28.8
160°F (71°C)
16.8
* Use an SDCR (Slave Damper Control Relay) for addi-
tional dampers.
Maximum dampers per panel is limited by transformer
size.
Ensure transformer is large enough to power the panel
(6.25 VA) and dampers.
Table 4. Accessories.
Accessory
Description
40 VA transformer* AT140A1042*
75 VA transformer
AT175A1008
Discharge Air
Temperature
Sensor (DATS)*
DATS C7735A1000*
SDCR
Slave Damper Control Relay
* Included in HZ221K kit.
