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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.
8 (203)
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.
System Non-Programmable Programmable
Heat
Pump
Note: These thermostat models all have different four-
digit suffixes. All versions of the model numbers listed
above will work with the applications they're listed for.
Type
Zone
Zone
Bypass Static pres-
8-1/8
(206)
Ambient Temp.
100°F (38°C)
160°F (71°C)
* Use an SDCR (Slave Damper Control Relay) for addi-
tional dampers.
Maximum dampers per panel is limited by transformer
1-55/64
size.
(47)
Ensure transformer is large enough to power the panel
M24742A
(6.25 VA) and dampers.
Accessory
40 VA transformer*
75 VA transformer
Discharge Air
Temperature Sensor
(DATS)*
SDCR
* Included in HZ221K kit.
spECifiCaTiONs aNd aCCEssOriEs
Table 1. Recommended Thermostats.
TH3210D, TH5220D,
TH5320U
Table 2. Recommended Dampers.
Honeywell
Round
Damper
Spring-open/
ARD
power-closed
Power-open/
MARD/
power-closed
RRD
SPRD
sure regulat-
ing damper
Table 3. Maximum Dampers.*
Maximum Damper VA per Zone
28.8
16.8
Table 4. Accessories.
Description
AT140A1042*
AT175A1008
DATS C7735A1000*
Slave Damper Control Relay
HZ22 TrueZONE
TH4210D, TH6220D,
TH8220U, TH8321U,
YTH9421C
Rectangular
ZD
For recommended
dampers call the
Honeywell Zoning
Hotline at
1-800-828-8367.
SPRD
69-2200—0
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