Honeywell HZ322 TrueZONE Panel User Guide
HZ322 TrueZONE® Panel
SUBMITTAL SHEET
| Job Name | |
| Engineer | |
| Mechanical Contractor | |
| Contractor’s P.O. No. | |
| Representative | |
| Notes |
| Model(s) | ||||
| HZ322 | Qty. | Notes | ||
HZ322K (Kit |
Qty. | Notes | ||
| Approval | ||||
| Service | ||||
| Tag No. | ||||
APPLICATION
The HZ322 TrueZONE panel controls:
- Conventional gas, oil, or electric forced-air systems up to 2 stages heat and 2 stages cool;
- Heat pump systems with single-stage compressor and auxiliary heat;
- 2 or 3 forced-air zones with wired thermostats, or wireless thermostats using an optional wireless adaptor.
FEATURES
- Intuitive installer setup with easy-to-follow, digital the display uses real language to guide the installer through configuration
- Universal application for any HVAC system using conventional thermostat wiring (R W Y G C etc.)
- Standard checkout procedure ensures correct operation before leaving the job
- Robust push terminals for up to two wires per terminal
- Common-sense LEDs indicate the stage of heat and damper state
- Control of two or three-wire dampers with open or closed logic
- Variable-speed fan control lowers fan speed when one zone is calling for cooling
- Discharge air temperature down-stages equipment when near high or low limit
SPECIFICATIONS
Input Ratings:
Voltage: 18-30 VAC 50/60 Hz powered by a transformer of 40 VA or more
Current Draw:
Zone Panel: 7.5 VA max. All VA specifications at 24 VAC.
Wiring: 18- or 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 Fig. 1.
Mounting:
Mounts with either 2 screws at the centerline to mount onto 2x 4, or with 4 screws at corners for a wall mount.
Recommended Thermostats: See Table 1.
Recommended Dampers: See Tables 2 and 3.
For a maximum number of dampers per zone see Table 4.
Accessories:
See Table 5.
Emissions:
Complies with FCC Class B, part 15 requirements.
Fig. 1. HZ322 TrueZONE panel dimensions in in. (mm).
Table 1. Recommended thermostats.
| RedLINK thermostats: | |
| TH8110R1008 (wired or wireless*) Single-stage heat and cooling. No IAQ. | |
| TH8320R1003 (wired or wireless*) 2H/2C heat pump without aux, 2H/1C with AUX or 2H/2C conventional. No IAQ. | |
| TH8321R1001 (wired or wireless*) 2H/2C heat pump without aux, 2H/1C with AUX or 2H/2C conventional. Hum, Dehum, or Vent control when used as wired thermostat, or wireless to a THM5421R1021 EIM. EIM wired to one of the zones. | |
| THX9421R5021 Prestige (2-wire R and C. Wireless to THM4000R/HZ322 or THM5421R1021 EIM.*) 2H/2C heat pump without aux, 2H/1C with AUX or 2H/2C conventional. Hum, Dehum, and Vent control when used with THM5421R1021 EIM. EIM wired to one of the zones. | |
| TH6320R1004 programmable FocusPRO (wireless*) 2H/2C heat pump without aux, 2H/1C with AUX or 2H/2C conventional. No IAQ. | |
| TH5320R1002 non-programmable FocusPRO (wireless*) 2H/2C heat pump without aux, 2H/1C with AUX or 2H/2C conventional. No IAQ. | |
| Wired thermostat | |
| Battery-powered, hard-wired, or mechanical | The HZ322 is compatible with most standard thermostats. The HZ322 allows you to choose stage 2 (and stage 3) control to be by thermostat, timer, or % of zones. If you want the thermostats to control staging, multi-stage thermostats are required. |
| Power stealing or phantom voltage (Lyric round, etc.) | We do not recommend using thermostats that operate on phantom voltage or power-stealing mode with the HZ322. Some of these models have an optional C wire. Models tested with a C wire worked correctly with the HZ322. |
| * RedLINK models without IAQ control need a THM4000R1000 wireless adaptor. One adaptor can be used for up to 3 RedLINK thermostats on HZ322. If IAQ control is required from the TH8321R1001 or THX9421R5021 model, a THM5421R1021 is required for the thermostat controlling IAQ equipment. That EIM wires to one of the zones on the HZ322. | |
Table 2. Recommended residential dampers.
| Type | Actuation | Round | Rectangular |
| Zone | Spring-open/power-closed | ARD | ZD |
| Power-open/power-closed | RRD | ||
| Bypass | Barometric | CPRD | None |
Table 3. Recommended commercial dampers.
| Type | Actuation | Round | Rectangular |
| Zone | Power-open/power-closed | MARD | D2 with ML6161A2009* |
| Bypass | Power-open/power-closed | MARD with SPC | D2 with ML6161A2009* and SPC |
| *Or equivalent damper and actuator. | |||
Table 4. Maximum dampers*
| Ambient Temp. | Maximum Damper VA per Zone |
| 100°F (38°C) | 28.8 |
| 160°F (71°C) | 16.8 |
| * Use an SDCR (Secondary Damper Control Relay) for additional dampers. | |
| •Maximum dampers per panel is limited by transformer size. | |
| •Ensure the transformer is large enough to power the panel (7.5 VA) and dampers. | |
Table 5. Accessories.
| Description | Part Number |
| 40 VA transformer | AT140A1042* |
| 75 VA transformer | AT175A1008 |
| Discharge air temperature sensor (DATS) | C7735A1000* |
| Outdoor Air Sensor (wired) | C7089U1006 |
| Outdoor Air Sensor (wired) | C7089R1013 (THM4000R1000 wireless adaptor required) |
| Wireless adaptor | THM4000R1000 |
| Secondary damper control relay | SDCR |
| *Included in HZ322K kit. | |
1985 Douglas Drive North, Golden Valley, MN 55422
1-800-468-1502
68-3072—03 M.S. Rev. 06-21 | Printed in the United States
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