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HZ221 TrueZONE  
Zone Panel Professional Installation Guide  
6
9-2200-01  
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Installation Guide  
TablE Of CONTENTs  
Specifications and Accessories ...................................................................................................1  
Installation......................................................................................................................................2  
Wiring..............................................................................................................................................3  
Operation........................................................................................................................................5  
Warranty .........................................................................................................................................6  
Need Help?  
For assistance with this product please visit http://yourhome.honeywell.com  
or call Honeywell Zoning Hotline toll-free at 1-800-828-8367  
Read and save these instructions.  
®
U.S. Registered Trademark.  
Patents pending.  
Copyright © 2008 Honeywell International Inc.  
All rights reserved.  
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HZ22ꢀ TrueZONE  
spECifiCaTiONs aNd aCCEssOꢀiEs  
Input Ratings:  
Voltage: 18-30 VAC 50/60 Hz transformer of 40 VA  
or more.  
RECOMMENDED THERMOSTATS, DAMPERS, AND  
ACCESSORIES  
The following are suggested thermostats, dampers, and  
accessories for use with the TrueZONE panel.  
Current Draw:  
Zone Panel: 6.25 VA max.  
All VA specifications at 24 VAC.  
Table 1. Recommended Thermostats.  
System Non-Programmable Programmable  
Wiring:  
Heat  
TH3210D, TH5220D, TH4210D, TH6220D,  
18–20-gauge solid (not stranded) wire.  
Pump  
TH5320U  
TH8220U, TH8321U,  
YTH9421C  
Humidity Ratings:  
% to 90% RH non-condensing.  
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.  
5
Temperature Ratings:  
Shipping: -20° to 150°F (-29° to 66°C)  
Operating: -40° to 165°F (-40° to 74°C)  
Table 2. Recommended Dampers.  
Type  
Zone  
Zone  
Honeywell  
Damper  
Spring-open/ ARD  
power-closed  
Round Rectangular  
Dimensions:  
See below.  
ZD  
Emissions:  
Complies with FCC Class B, part 15 requirements.  
Power-open/ MARD/ For recommended  
power-closed RRD  
dampers call the  
Honeywell Zoning  
Hotline at  
1
-800-828-8367.  
Bypass Static pres-  
sure regulat-  
SPRD  
SPRD  
ing damper  
8
-1/8  
Table 3. Maximum Dampers.*  
(
206)  
Ambient Temp. Maximum Damper VA per Zone  
1
1
00°F (38°C)  
60°F (71°C)  
28.8  
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  
1
-55/64  
(47)  
M24742A  
8
(203)  
HZ221 TrueZONE panel dimensions in in. (mm).  
(6.25 VA) and dampers.  
Table 4. Accessories.  
Description  
Accessory  
4
7
0 VA transformer* AT140A1042*  
5 VA transformer  
AT175A1008  
Discharge Air  
DATS C7735A1000*  
Temperature Sensor  
(
DATS)*  
SDCR  
Slave Damper Control Relay  
*
Included in HZ221K kit.  
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Installation Guide  
iNsTallaTiON  
Mount the HZ221 TrueZONE  
panel near the HVAC equip-  
ment; locate it on a wall,  
stud, roof truss, or cold-air  
return.  
ZONE PANEL  
(
WALL MOUNT)  
1
BYPASS  
DAMPER  
DATS  
RETURN  
DUCT  
(ALTERNATE LOCATION)  
NOTE: The HZ221  
TrueZONE panel can be  
mounted in any orientation;  
level it for appearance only.  
ZONE PANEL  
DUCT MOUNT)  
(
ARD  
DAMPERS  
DATS  
SUPPLY  
DUCT  
M28164  
Separate the zone panel cover from the base, and use the base as a template to drill mounting holes.  
Attach the base to the wall, stud, roof truss, or duct with appropriate screws (not included).  
2
Use two screws for attaching to a stud or roof truss, or  
four screws for duct or drywall/plaster installations.  
M24803  
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HZ22ꢀ TrueZONE  
WiꢀiNg  
Wiring must comply with applicable codes, ordinances, and regulations.  
CAUTION: Voltage Hazard.  
Can cause electrical shock or equipment damage. Disconnect power before beginning installation.  
Wire entire panel before applying transformer power.  
Install thermostats using instructions provided with thermostats.  
Connect thermostat to zone panel. To connect wire to the panel, strip  
approximately 1/4 in. of insulation and push wire into terminal. To  
3
M1  
M4  
release wire, press the button on top of the terminal. In retrofit applica-  
M6  
R
R
tions, trim end of wire if not straight.  
C
C
E/AUX  
E
If the thermostat has separate E and Aux terminals, install a jumper  
between the two terminals.  
Y
G
O
L
AUX  
Y
G
O/B  
L
ZONE 2 THERMOSTAT  
M28234B  
Wires can be run behind the panel, through  
wire channels on the panel's sides, and  
must be attached to a wiring anchor with a  
cable tie.  
ARD OR ZD DAMPER  
SPRING-OPEN POWER-CLOSED  
M24743  
RRD OR MARD DAMPER  
POWER-OPEN  
POWER-CLOSED  
M1 COMMON  
Install dampers using instructions provided  
with dampers. Connect dampers to zone  
panel.  
M4 OPEN  
M1  
M4  
M6  
R
4
5
M6 CLOSED  
NOTE: Multiple dampers can be wired in  
parallel.  
ARD OR ZD DAMPER SPRING-OPEN POWER-CLOSED  
M28235  
DATS  
DATS  
Connect DATS as shown.  
M24804  
C7735A1000  
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Installation Guide  
WiꢀiNg  
AIR  
HANDLER  
2
4 VOLT TRANS.  
C R  
Connect equipment as shown.  
6
AUX/EM HEAT  
E
R
C
E/Aux  
FAN RELAY  
Y
G
G
O
B
Y
The DS/BK terminal is used with a variable-speed fan.  
Connect to the DS, BK, or ODD terminal on the furnace  
equipment. When only one zone calls for heat, cool, or  
fan, the DS/BK terminal operates the fan at low speed  
to reduce airflow.  
DS/BK  
L
HEAT PUMP  
C
R
Y
REVERSING  
VALVE  
L1  
HOT)  
(
R
C
M28236A  
R
C
Connect transformer as shown.  
7
L2  
DEDICATED TRANSFORMER  
M28237  
The following diagram is an overall view of wiring for a heat pump system as depicted in steps 3–7.  
M1 COMMON  
RRD OR MARD DAMPER  
POWER-OPEN  
POWER-CLOSED  
M1  
M4 OPEN  
M4  
M6  
R
C
AIR  
HANDLER  
M6 CLOSED  
2
4 VOLT TRANS.  
E/AUX  
C
R
R
Y
G
O
L
AUX HEAT  
C
E
ARD OR ZD DAMPER  
SPRING-OPEN  
POWER-CLOSED  
E/Aux  
FAN RELAY  
Y
G
O
B
G
Y
HEAT  
COOL  
FAN  
M1  
M4  
M6  
R
C
ZONE 1  
ZONE 2  
EM HEAT  
HEAT PUMP  
DS/BK  
L
R
C
E
AUX  
Y
G
O/B  
L
C
R
Y
PURGE  
R
C
E/AUX  
Y
G
O
L
REVERSING  
VALVE  
DATS  
DATS  
L1  
HOT)  
(
R
C
EMERGENCY HEAT  
L2  
PURGE OVERRIDE  
DEDICATED  
TRANSFORMER  
ZONE 2 THERMOSTAT  
M27339  
C7735A1000  
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HZ22ꢀ TrueZONE  
OpEꢀaTiON  
The HZ221 TrueZONE panel contains an LED display that communicates system and zone status. The LEDs indicate  
the following information.  
Table 5. LED Operation.  
LED  
Description  
HEAT  
Solid when in heat.  
Blinking when DATS temperature exceeds 120°F  
(
49°C) and calling for heat pump only.  
Blinking when DATS temperature exceeds 160°F  
71°C) and calling for heat pump and auxiliary  
HZ221  
(
heat. At 150°F (66°C), auxiliary heat is disabled.  
HEAT  
ZONE 1  
ZONE 2  
EM HEAT  
COOL  
FAN  
COOL  
Solid when in cool. Blinking when 45°F (7°C) DATS  
low limit mode has been reached.  
PURGE  
FAN  
Solid when in operation.  
PURGE  
Solid when in purge (lasts 2 minutes at power-up  
and after a call for heat or cool). Blinking when the  
DATS sensor has failed, or the wires are shorted or  
open. Will blink for 3 minutes at power-up if DATS  
is not present.  
ZONE 1, 2  
EM HEAT  
Solid green when open or opening.  
Solid red when closed or closing.  
Blinking amber when there is a damper or thermo-  
stat short circuit (circuit breaker trip).  
M28239A  
LED display.  
Solid when in Em Heat mode.  
HZ221  
Zones, 2H/1C  
Much of this information is also listed on the label on the  
inside of the HZ221 cover.  
2
LED Status  
Heat LED  
Flashing Heat LED  
Cool LED  
Flashing Cool LED  
Purge LED  
Flashing Purge LED  
Fan LED  
Heating Mode  
High Limit  
Cooling Mode  
Low Limit  
Purge Mode  
Sensor Failure  
Fan On  
When the zone panel cover is off, the EMERGENCY HEAT/PURGE OVERRIDE button  
is visible.  
When the panel is in Purge (at startup or after a call for heat/cool), pressing this but-  
ton stops the Purge, which saves time during installation or troubleshooting.  
All other times, pressing the button puts the zone panel into Em Heat mode so that  
all calls for heat are handled by the auxiliary heat.  
Em Heat LED  
Zone LEDs  
Em Heat Mode  
Green - Open  
Red - Closed  
Flashing - Short  
DATS  
DATS  
Zone Names  
Zone 1 _______________________  
Zone 2 _______________________  
Technical Support: 1-800-828-8367  
Customer.Honeywell.com  
EMERGENCY HEAT  
PURGE OVERRIDE  
Patents Pending  
5
0031314-001 Rev. A  
M28240A  
M24741A  
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WaꢀꢀaNTy  
Honeywell warrants the products in this catalog (except those parts designated on Honeywell’s price lists as not covered by this warranty) to be free from defects due  
TM  
to workmanship or materials, under normal use and service, for the following warranty periods. Honeywell VisionPRO®, Commercial VisionPRO , FocusPRO®, PRO  
TM  
TM  
TM  
4
000, PRO 3000, LineVolt PRO, Digital Round , and Modern Round (T87K, N) Series Thermostats with a date code of 0501 or later: sixty (60) months from date of  
installation. CommercialPRO, PRO 2000 and PRO 1000 thermostats: twenty-four (24) months from date of installation. All other Honeywell thermostats and thermo-  
stats with a date code of 0452 or earlier: twelve (12) months from date of installation, unless specified otherwise. Honeywell Air Cleaners, Humidifiers, Ventilators,  
Ultraviolet Treatment and Zoning Products with a date code of 0501 or later, excluding replacement maintenance parts: sixty (60) months from date of installation. All  
other Honeywell indoor air quality and zoning products with a date code of 0452 or earlier: twenty-four (24) months from date of installation, unless specified other-  
wise. Variable frequency drive devices (VFD) and accessories: new products for thirty-six (36) months and factory refurbished drives for twelve (12) months from date  
of installation when start-up and commissioning is performed by Honeywell VFD Authorized and trained personnel. All VFD warranty return products must have prior  
authorization (Form No. 87-0284) and be returned only to the VFD Service Center in Chattanooga, TN. MS, MN and Fact Acting 2-position Direct Coupled Actuators:  
sixty (60) months from date of installation. The warranty period for all other products is twelve (12) months from date of installation.  
If a product is defective due to workmanship or materials, is removed within the applicable warranty period, and is returned to Honeywell in accordance with the pro-  
cedure described below, Honeywell will, at its option, either repair, replace or credit the customer for the purchase price of the product, in accordance with the proce-  
dure described below. This warranty extends only to persons or organizations who purchase products in this catalog for resale.  
The expressed warranty above constitutes the entire warranty of Honeywell with respect to the products in this catalog and IS IN LIEU OF ALL OTHER WARRANTIES,  
EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL  
HONEYWELL BE RESPONSIBLE FOR ANY CONSEQUENTIAL DAMAGES OF ANY NATURE WHATSOEVER.  
Automation and Control Solutions  
Honeywell International Inc.  
985 Douglas Drive North  
Honeywell Limited-Honeywell Limitée  
35 Dynamic Drive  
1
Golden Valley, MN 55422  
customer.honeywell.com  
Toronto, Ontario M1V 4Z9  
®
©
U.S. Registered Trademark.  
2008 Honeywell International Inc.  
Printed in U.S.A. on recycled  
paper containing at least 10%  
post-consumer paper fibers.  
Patents pending  
9-2200—01 M.S. 04-08  
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