HZ221 TrueZONE Zone Panel Professional Installation Guide

The Honeywell HZ221 TrueZONE Zone Panel is designed for professional installation in HVAC systems to manage multiple zones. This guide provides detailed instructions for its setup, wiring, and operation.

For assistance, visit http://yourhome.honeywell.com or call the Honeywell Zoning Hotline at 1-800-828-8367.

Specifications and Accessories

Input Ratings: Voltage: 18-30 VAC, requiring a 40 VA or greater transformer. Current Draw: Zone Panel 6.25 VA max. All VA specifications are at 24 VAC.

Wiring: Use 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: The HZ221 TrueZONE panel dimensions are approximately 8 inches (203 mm) in width, 8-1/8 inches (206 mm) in height, and 1-55/64 inches (47 mm) in depth.

Emissions: Complies with FCC Class B, Part 15 requirements.

Recommended Thermostats, Dampers, and Accessories

Table 1. Recommended Thermostats.

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.

Table 2. Recommended Dampers.

Table 3. Maximum Dampers.*

* 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.

Table 4. Accessories.

* Included in HZ221K kit.

Installation

Step 1: Mounting the 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.

The installation diagram illustrates mounting the HZ221 TrueZONE panel near HVAC equipment. It shows placement options on a wall (wall mount) or ductwork (duct mount), connected to the return duct, supply duct, a bypass damper, and zone dampers (ARD dampers). An alternate location for the DATS is also indicated.

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).

This diagram shows how to separate the zone panel cover from its base. The base serves as a template for drilling mounting holes. It specifies using two screws for mounting to a stud or roof truss, and four screws for duct or 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 the 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 a wire to the panel, strip approximately 1/4 inch of insulation and push the wire into the terminal. To release a 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.

The wiring diagram details thermostat connections to the zone panel terminals (R, C, E/AUX, Y, G, O, L), including a note on using a jumper for separate E and Aux terminals. It also shows wiring for ARD/ZD (spring-open, power-closed) and RRD/MARD (power-open, power-closed) dampers, connecting to terminals M1, M4, M6. Wires can be routed through panel channels and secured with a cable tie.

Step 4: Install Dampers

Install dampers using instructions provided with the dampers. Connect dampers to the zone panel.

Note: Multiple dampers can be wired in parallel.

Step 5: Connect DATS

Connect the Discharge Air Temperature Sensor (DATS) as shown.

Step 6: Connect Equipment

Connect other HVAC equipment as shown in the diagram. 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.

Step 7: Connect Transformer

Connect the transformer as shown.

This section provides an overall wiring view for a heat pump system. It details connections for the HZ221 zone panel to thermostats, dampers, DATS, air handler, 24V transformer, heat pump, and reversing valve, covering various operational modes like Heat, Cool, Fan, Purge, and Emergency Heat.

Operation

The HZ221 TrueZONE panel features an LED display that communicates system and zone status. The LEDs indicate the following information:

Table 5. LED Operation.

The HZ221 panel has indicator LEDs for HEAT, COOL, FAN, PURGE, ZONE 1, ZONE 2, and EM HEAT, showing system status. A separate diagram highlights the EMERGENCY HEAT/PURGE OVERRIDE button, accessible when the panel cover is removed, which can stop Purge mode or activate Em Heat mode.

Much of this information is also listed on the label inside the HZ221 cover, including LED status descriptions (e.g., Flashing Heat LED indicates High Limit).

Zone Names: Zone 1, Zone 2.

Technical Support: 1-800-828-8367. Website: https://customer.honeywell.com.

Warranty

Honeywell warrants its products against defects in workmanship and materials under normal use and service for specified periods. Specific warranty periods are detailed for various Honeywell thermostats (VisionPRO, Commercial VisionPRO, FocusPRO, PRO series, LineVolt PRO, Digital Round, Modern Round) based on their date codes, ranging from 12 to 60 months from installation.

Honeywell Air Cleaners, Humidifiers, Ventilators, Ultraviolet Treatment, and Zoning Products also have warranty periods of 24 to 60 months from installation, depending on the product type and date code.

Variable frequency drive (VFD) devices and accessories have a 36-month warranty for new products and 12 months for factory refurbished drives, provided start-up and commissioning are performed by Honeywell VFD Authorized personnel. MS, MN, and Fact Acting 2-position Direct Coupled Actuators have a 60-month warranty from installation. All other products have a 12-month warranty from installation.

If a product is found defective within its warranty period, it must be removed and returned to Honeywell according to their procedure. Honeywell will, at its option, repair, replace, or credit the customer for the purchase price. This warranty extends only to persons or organizations purchasing products for resale.

The expressed warranty is the sole warranty and is in lieu of all other warranties, express or implied, including warranties of merchantability or fitness for a particular purpose. Honeywell is not responsible for any consequential damages.

Honeywell Contact Information

Automation and Control Solutions, Honeywell International Inc., 1985 Douglas Drive North, Golden Valley, MN 55422. https://customer.honeywell.com.

Honeywell Limited-Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.

Printed in U.S.A. on recycled paper.