Honeywell TZ-4 TotalZone Manual

Honeywell Zone Control Panel

The TZ-4 TotalZone Zone Control Panel controls single-stage, multi-stage, conventional or heat pump heat/cool equipment. It controls 2, 3 or 4 zones, and is expandable up to 32 zones with optional TotalZone® Add-A-Zone™ Four Zone Control Panel.

Honeywell TZ-4 FEATURES

  • • Up to three stages heat and two stages cooling can be controlled by thermostat, built-in timer, or based on the percentage of zones calling.

  • Controls single-stage, multi-stage, conventional, heat pump or dual-fuel equipment.

  • Controls up to four zones and can be expanded up to 32 zones with Add-A-Zone Control Panels.

  • Uses Honeywell four-wire, single-stage, multi-stage, or select heat pump thermostats.

  • Zone-A-Lone central setback feature.

  • Purge timer protects equipment between calls for heat or cool with choice of panel or HVAC equipment controlled fan.

  • System and zone damper LEDs indicate system and damper status.

  • Individual zone fan control.

  • Discharge Air Temperature Sensor for capacity control with adjustable high and low limits.

  • Thermal circuit breaker protects panel and transformer from damage if miswired.

Honeywell TZ-4 Table of Contents

Application......................................................................... 1
Features ............................................................................1
Specifications .................................................................... 2
Installation ......................................................................... 4
Startup and Checkout........................................................ 12
Operation...........................................................................12
Troubleshooting................................................................. 17

Honeywell TZ-4 SPECIFICATIONS

Input Ratings:
Voltage: 20-30 Vac, 50/60 Hz.
Power: 13 VA, nominal.
Output Ratings:
1.5A run, 200,000 cycles (30 Vac). 3.5 inrush.
1.5A run, 100,000 cycles (30 Vac) 7.5A inrush.
Humidity Ratings:
5 to 90 percent RH, non-condensing.
Temperature Ratings:
Shipping: -20° to 120°F.
Operating: -40° to 150°F.
Dimensions: 10-3/4 in. H x 12-3/4 in. W x 1-7/8 in. D.
See Fig. 1.
Mounting: Mounts with four 1 in. no. 8 screws (provided)
through holes in cabinet back. Wall anchors are provided.

Wiring: 18-gauge wire for all equipment and system connections.
Wiring Connections:
Thermostat: R, C, W1/E, W2, W3/AUX, Y1, Y2, G, L, O/B
Dampers: M6 (Closed); M4 (Open); M1 (Common).
Discharge Air Temperature Sensor (C7735A1000); DATS, DATS.
Zone-A-Lone: OC, OC.
Outdoor Temperature: OT, OT.
Transformer 1: R (hot), C (common).
Transformer 2: T1 (hot), T2 (common).
Equipment: Rc-Rh, W1/E, W2, W3/AUX Y1, Y2, G, O/B.
Thermostats (See Table 1):
Most conventional four-wire (R,W,Y,G) thermostats can be used to control conventional, heat pump, or multi-stage equipment.
Manual or automatic changeover switching thermostats can be used.
Multi-stage or select heat pump thermostats can also be used.

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Honeywell TZ-4 TotalZone Manual