Table of Contents
Need Help? For assistance with this product, please visit http://yourhome.honeywell.com or call the Honeywell Zoning Hotline toll-free at 1-800-828-8367.
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® U.S. Registered Trademark. Patents pending. Copyright © 2008 Honeywell International Inc. All rights reserved.
Specifications and Accessories
Specifications
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).
Emissions: Complies with FCC Class B, part 15 requirements.
Dimensions: The HZ221 TrueZONE panel dimensions are approximately 8-1/8 inches (206 mm) in width, 8 inches (203 mm) in height, and 1-55/64 inches (47 mm) in depth.
Diagram Description: A technical drawing of the HZ221 TrueZONE panel showing its dimensions in inches and millimeters.
Recommended Equipment
Recommended Thermostats
| System | Non-Programmable | Programmable |
|---|---|---|
| Heat Pump | TH3210D, TH5220D, TH4210D, TH6220D, TH5320U | TH8220U, TH8321U, YTH9421C |
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.
Recommended Dampers
| Type | Honeywell Damper | Round | Rectangular |
|---|---|---|---|
| Zone | Spring-open/ power-closed | ARD | ZD |
| Zone | Power-open/ power-closed | MARD/ RRD | For recommended dampers call the Honeywell Zoning Hotline at 1-800-828-8367. |
| Bypass | Static pressure regulating damper | SPRD | SPRD |
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 additional dampers.
Maximum dampers per panel is limited by transformer size. Ensure transformer is large enough to power the panel (6.25 VA) and dampers.
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.
Installation
Step 1: Mounting the Zone Panel
Mount the HZ221 TrueZONE panel near the HVAC equipment. Locate it on a wall, stud, roof truss, or cold-air return.
NOTE: The HZ221 TrueZONE panel can be mounted in any orientation; level it for appearance only.
Diagram Description: An illustration depicting the HZ221 TrueZONE panel mounted near HVAC equipment. It shows options for wall mounting (ZONE PANEL WALL MOUNT) and duct mounting (ZONE PANEL DUCT MOUNT). The diagram illustrates the placement relative to a BYPASS DAMPER, DATS sensors (with an alternate location indicated), SUPPLY DUCT, and RETURN DUCT.
Step 2: Attaching the Base
Separate the zone panel cover from the base. 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).
Note: Use two screws for attaching to a stud or roof truss, or four screws for duct or drywall/plaster installations.
Diagram Description: A diagram showing the zone panel cover separated from its base. It indicates using two screws for stud/roof truss mounting or four screws for duct/drywall/plaster installations.
Wiring
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.
Step 3: Install Thermostats
Install thermostats using instructions provided with the thermostats. Connect the thermostat to the zone panel. To connect wire to the panel, strip approximately 1/4 in. of insulation and push wire into the terminal. To release wire, press the button on top of the terminal. In retrofit applications, trim the end of the wire if it is not straight.
If the thermostat has separate E and Aux terminals, install a jumper between the two terminals.
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.
Diagram Description: Wiring diagrams show connections for a thermostat to the zone panel, including terminals R, C, E/AUX, Y, G, O/B, L. It also shows connections for a Zone 2 thermostat and dampers (ARD/ZD, RRD/MARD).
Step 4: Install Dampers
Install dampers using instructions provided with the dampers. Connect dampers to the zone panel. Multiple dampers can be wired in parallel.
Diagram Description: Diagrams illustrate wiring for ARD/ZD (Spring-open, Power-closed) and RRD/MARD (Power-open, Power-closed) dampers, showing connections to the zone panel.
Step 5: Connect DATS
Connect the Discharge Air Temperature Sensor (DATS) as shown.
Diagram Description: A diagram shows the connection of the DATS sensor to the zone panel.
Step 6: Connect Equipment
Connect equipment as shown. 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.
Diagram Description: Wiring diagrams show connections for the Air Handler, 24 Volt Transformer, Heat Pump (including reversing valve), and Fan Relay. It shows how these connect to the zone panel terminals, including the DS/BK terminal for variable-speed fans.
Step 7: Connect Transformer
Connect the transformer as shown.
Diagram Description: A diagram shows a dedicated transformer connected to the zone panel.
Overall Wiring Diagram
The following diagram is an overall view of wiring for a heat pump system as depicted in steps 3–7.
Diagram Description: A comprehensive schematic showing the complete system wiring, integrating the zone panel, thermostats, dampers, DATS, and HVAC equipment for a heat pump system. It details connections for Zone 1 and Zone 2 thermostats and dampers, DATS, and equipment terminals like HEAT, COOL, FAN, EM HEAT, PURGE, and OEM HEAT.
Operation
The HZ221 TrueZONE panel contains an LED display that communicates system and zone status. The LEDs indicate the following information:
| 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 heat. At 150°F (66°C), auxiliary heat is disabled. |
| COOL | Solid when in cool. Blinking when 45°F (7°C) DATS low limit mode has been reached. |
| 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 | Solid green when open or opening. Solid red when closed or closing. Blinking amber when there is a damper or thermostat short circuit (circuit breaker trip). |
| EM HEAT | Solid when in Em Heat mode. |
Diagram Description: A diagram shows the HZ221 panel with its LED indicators labeled (HEAT, COOL, FAN, PURGE, ZONE 1, ZONE 2, EM HEAT).
Much of this information is also listed on the label on the inside of the HZ221 cover.
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 button 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.
Diagram Description: A diagram illustrates the EMERGENCY HEAT/PURGE OVERRIDE button and DATS connections.
Zone Names:
- Zone 1
- Zone 2
Technical Support: 1-800-828-8367
Customer Support: Customer.Honeywell.com
Warranty
Honeywell warrants its products to be free from defects due to workmanship or materials, under normal use and service, for specified warranty periods. These periods vary by product type, such as thermostats (e.g., sixty months for certain series, twenty-four months for others, twelve months for older models), Air Cleaners, Humidifiers, Ventilators, Ultraviolet Treatment and Zoning Products (sixty months for newer models, twenty-four months for older models), Variable Frequency Drive (VFD) devices (thirty-six months for new, twelve months for refurbished), and Actuators (sixty months for certain types, twelve months for others).
If a product is found to be defective within its applicable warranty period, and is returned to Honeywell according to the described procedure, Honeywell will, at its option, repair, replace, or credit the customer for the purchase price.
This warranty extends only to persons or organizations who purchase products for resale.
The expressed warranty is the entire warranty and is in lieu of all other warranties, express or implied, including any warranty of merchantability or fitness for a particular purpose. Honeywell shall not be responsible for any consequential damages of any nature whatsoever.
Honeywell Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
® U.S. Registered Trademark. © 2008 Honeywell International Inc. Patents pending. 69-2200-01 M.S. 04-08.
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