Honeywell TrolaTemp MABS EZ-4 - User Manual

PRODUCT DATA
69- 1360- 2
® U.S. Registered Trademark
Copyright © 2001 Honeywell • All Rights Reserved
Mastertrol® Automatic Balancing System™
(MABS®) EZ Zone (EZ-2 and EZ-4)
Control Panels
APPLICATION
The MABS EZ-2 and EZ-4 are microprocessor-based forced
air zone control panels that provide automatic or manual
changeover control of single- and two-stage heating and
cooling and heat pumps with or without auxiliary heat.
FEATURES
• MABS EZ-2 controls two zones and MABS EZ-4 control
four zones. For systems requiring five or more zones,
the TotalZone series of control panels is used.
• Uses standard four-wire (R,W,Y,G) thermostats.
• Any zone thermostat changeover is based on first call.
• Bank of eight DIP switches provides easy system
configuration.
• Adjustable purge timing of two minutes or three and
one-half minutes.
• Adjustable heating and cooling limit with optional
ZoneMAX Sensor.
• Stage control allows built-in timer to control heating
and cooling stages.
• Use any four-wire thermostat.
For Internet access: www.trolatemp.com or
www.honeywell.com/yourhome/zoning/zoning_home.htm
For technical support, call 1-800-TAT-Temp (1-800-828-8367).
To download Zoning literature: http://hbctechlit.honeywell.com
Contents
Application ........................................................................ 1
Features ............................................................................ 1
Specifications .................................................................... 2
Ordering Information ......................................................... 2
Installation ......................................................................... 3
Startup and Checkout........................................................ 8
Operation........................................................................... 9
Troubleshooting................................................................. 12

Honeywell TrolaTemp MABS EZ-4 Specifications

General

Category	Control Panel
Model	TrolaTemp MABS EZ-4
Accuracy	±1°F
Weight	0.5 lbs
Mounting	Wall Mount

Summary

Application

Features

Specifications

Thermostat Compatibility

Details compatible thermostats for manual/automatic changeover and heat pump systems.

Ordering Information

Installation

Mounting Instructions

Guidelines for physically mounting the MABS EZ panel and thermostats.

Wiring Guidelines

Instructions for connecting the MABS EZ panel to HVAC components.

Wiring Diagrams

Single-Stage Thermostat Hookup

Illustrates the basic wiring for a single-stage thermostat.

Heat Pump Thermostat Wiring

Shows wiring for heat pump thermostats with separate heat/cool calls.

Damper Wiring (AOBD Single)

Diagram for single AOBD damper motor connections.

Damper Wiring (AOBD Multiple)

Diagram for multiple AOBD damper motor connections.

Damper Wiring (ARD;ZD)

Wiring diagram for ARD or ZD damper motors.

Damper Wiring (MARD;CDO-51)

Wiring diagram for MARD and CDO-51 damper motors.

Wiring Diagrams (Continued)

ML6161 Damper Motor Wiring

Wiring diagram for ML6161 damper motor actuator.

Transformer Wiring

Diagram showing the connection of the 24V, 40VA transformer.

ZoneMAX;C7735 Sensor Wiring

Wiring diagram for the ZoneMAX or C7735 sensor.

Single-Stage HVAC Wiring

Wiring diagram for single-stage heating and cooling equipment.

Oil Furnace HVAC Wiring

Wiring diagram for oil furnace and air conditioning.

Wiring Diagrams (Continued)

Two-Stage HVAC Wiring

Wiring diagram for two-stage heating and cooling systems.

Heat Pump System Wiring

Wiring diagram specifically for heat pump systems.

Wiring Diagrams (Continued)

MABS EZ-2 Panel Wiring

Detailed wiring diagram for the MABS EZ-2 control panel.

Startup and Checkout

Operation

Sequence of Operation

Describes the step-by-step process of heating/cooling calls and purge mode.

Zone Fan Control

Explains how the fan operates based on thermostat settings.

Multi-Stage Control

Details how the panel controls multi-stage heating and cooling.

Changeover Mode

Describes how the system handles switching between heating and cooling.

Purge Mode Function

Explains the purpose and duration of the purge mode after a call.

ZoneMAX Sensor and Status Indicators

ZoneMAX Sensor Configuration

How to configure the ZoneMAX sensor using DIP switches.

LED Status Indicators

Explains the meaning of various LED status lights on the panel.

Maintenance and Protection Features

Microprocessor Re-booting

Procedure to restart the control panel's microprocessor.

Circuit Breaker Protection

Information on the panel's built-in thermal circuit breaker.

Thermostat and DIP Switch Configuration

Heat Pump Thermostat Usage

Specific considerations for heat pump or multi-stage thermostat usage.

Emergency Heat Jumper

How to configure the jumper for emergency heat stage control.

DIP Switch Functionality

Detailed functions of each DIP switch on the panel.

Troubleshooting Guide

Symptom-Problem-Solution Matrix

A table detailing common symptoms, problems, and solutions for troubleshooting.