This document is the professional installation guide for the HZ322 TrueZONE Zone Panel. It includes specifications, accessories, mounting instructions, wiring instructions, heat pump configuration, basic configuration, advanced configuration, operation instructions, checkout instructions, and warranty information.
The Honeywell HZ322 TrueZONE zone panel installation guide provides step‑by‑step instructions for mounting the panel, wiring thermostats and dampers, and configuring system settings. It includes detailed wiring diagrams for both conventional and heat‑pump HVAC systems, as well as guidance on using the optional wireless adapter and transformer sizing.
The guide also describes the panel’s LED display functions, checkout test sequence, recommended accessories, and warranty information. All specifications, such as input voltage, current draw, temperature and humidity limits, are listed to ensure proper installation and operation.
| Input Voltage | 18‑30 VAC 50/60 Hz transformer of 40 VA or more |
|---|---|
| Current Draw | 7.5 VA max (zone panel) |
| Wiring Gauge | 18‑ or 20‑gauge solid (not stranded) wire |
| Humidity Rating | 5 % to 90 % RH non‑condensing |
| Operating Temperature | -40 °F to 165 °F (‑40 °C to 74 °C) |
| Shipping Temperature | -20 °F to 150 °F (‑29 °C to 66 °C) |
| Emissions | Complies with FCC Class B, part 15 requirements |
| Minimum Transformer Size | 10 VA (recommended 40 VA for full load) |
The panel needs a transformer of at least 10 VA, with a 40 VA transformer recommended to power the panel and any attached dampers.
With the zone panel cover off, press the Mode button until the Checkout LED lights, then use the Adjust Setting and Next buttons to navigate the checkout menu.
HEAT 1 is solid when the system is in heat stage 1 and blinks when the DATS high‑limit mode is reached; HEAT 2 behaves similarly for heat stage 2.