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Relay Panel
BAY24VRPAC52DB
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT - This Document is customer property and is to remain with this unit.
These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with
the installation. Should further information be desired or should particular problems arise which are not covered sufficiently for the
purchaser's purposes, the matter should be referred to your installing dealer or local distributor.
Section 1. Safety
!
L
This information is intended for use by individuals possess-
ing adequate backgrounds of electrical and mechanical
experience. Any attempt to repair a central air conditioning
product may result in personal injury and/or property dam-
age. The manufacturer or seller cannot be responsible for
the interpretation of this information, nor can it assume any
liability in connection with its use.
L
!
LIVE ELECTRICAL COMPONENTS!
During installation, testing, servicing, and troubleshoot-
ing of this product, it may be necessary to work with live
electrical components. Failure to follow all electrical safety
precautions when exposed to live electrical components
could result in death or serious injury.
WARNING
WARNING
Installation Guide
Other Installation Guides may be necessary, based on system configuration.
A list of other system components is shown below.
1
Control
(required) *ZONE950AC52ZA
Relay Panel
2
For use with 24V or communicating
indoor unit and 24V
controlled outdoor unit
3
Zone Panel
(optional)
4
Zone Sensor with Display
5
Zone Sensor
(optional)
6
Zone Dampers
* A or T
Table of Contents
Section 1. Safety ................................................1
Section 2. General Information .........................2
Section 3. Installation ........................................3
Section 5. Field Wiring Diagrams .....................8
Section 6. LED Indicators ...............................11
Section 7. Troubleshooting .............................12
18-HD68D1-3
(optional)
(optional)
06/12
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Summary of Contents for Trane Relay Panel
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Page 1: Table Of Contents
Installation Guide Other Installation Guides may be necessary, based on system configuration. A list of other system components is shown below. Control (required) *ZONE950AC52ZA Relay Panel For use with 24V or communicating indoor unit and 24V controlled outdoor unit Zone Panel... -
Page 2: Section 2. General Information
Section 2. General Information 2.1 Overview The Relay Panel is a wall mounted low voltage panel that enables the communicating *ZONE950 control to operate with 24 VAC HVAC equipment. Only three wires are required from the control to the Relay Panel. -
Page 3: Section 3. Installation
2.5 System Transformer Sizing Guidelines Indoor Unit Type Comm Comm Furnace Air Handler Furnace Air Handler Minimum Indoor 24V Control Power OD Unit Type Transformer Size, VA* Communicating Heat Pump See Below Communicating Air Conditioner 24Volt-Controlled Single Stage Heat Pump 24Volt-Controlled Single Stage Air Conditioner 24Volt-Controlled 2-Stage Single Compressor Heat Pump 24Volt-Controlled 2-Stage Single Compressor Air Conditioner... - Page 4 MUST NOT touch each other. See the Field Wiring Dia- could result in death or serious injury. grams for specific system applications. Wires may enter the Relay Panel through openings on each corner and at the center of each side. Wires may...
- Page 5 Attaching Wires Bit Master BK PWM Comm Using 1/8” blade screwdriver, attach all wires se- Fault Aux1 curely to the proper terminals on the Relay Panel. Aux1 Aux2 Aux2 Refer to the following section for detailed terminal information. Relay Panel (See the Field Wiring Diagrams section for com- mon system configurations.)
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Page 6: Section 4. Terminal Locations & Identification
Indoor Unit W1 Stg1 W2 Stg2 W3 Stg3 Comm BK PWM Bit Master Aux1 Aux1 Aux2 Aux2 Relay Panel Dual Fuel Switch Switch Position Description For HP or conventional NORM Heat/Cool systems. NORM DUAL DUAL For dual fuel systems. - Page 7 ZZSENSAL0400AA BK PWM Outdoor temp sensor Bit Master BAYSEN01ATEMPA Note: The Relay Panel uses 5 VDC to obtain temperature feedback from Aux1 Comm remote sensors. Do not run these sensors in a wiring bundle that contains Aux1 24 volts AC. See remote sensor literature for troubleshooting.
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Page 8: Section 5. Field Wiring Diagrams
SENSOR Note: Enable "BK" (turn on dehumidifier switch or cut “BK” jumper). Note: Dual fuel switch on Relay Panel must be set to DUAL. Note: Dual fuel switch on Relay Panel must be set to DUAL. Note: Blower delay profiles must be turned off. See indoor unit service facts for details. - Page 9 HEAT PUMP HEAT PUMP WITH VARIABLE SPEED INDOOR HEAT PUMP WITH NON-VARIABLE SPEED INDOOR Non-Communicating Air Handler TWE & 2/4TEE3F RELAY VARIABLE SPEED SINGLE STAGE ONE OR TWO STAGE RELAY THERMOSTAT THERMOSTAT AIR HANDLER AIR HANDLER PANEL HEAT PUMP HEAT PUMP PANEL COOL/HEAT - COOL/HEAT -...
- Page 10 HEAT/COOL COOLING WITH VARIABLE SPEED INDOOR COOLING WITH NON-VARIABLE SPEED INDOOR TWO STAGE VS GAS FURNACE or ONE OR TWO STAGE VS AIR HANDLER RELAY RELAY ONE OR TWO STAGE THERMOSTAT AIR CONDITIONER & ELECTRIC HEAT THERMOSTAT PANEL PANEL GAS FURNACE or AIR HANDLER &...
- Page 11 SENSOR SENSOR Note: Enable "BK" (turn on dehumidifier switch or cut “BK” jumper). Note: Dual fuel switch on Relay Panel must be set to DUAL. Note: Blower delay profiles must be turned off. See indoor unit service facts for details.
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Page 12: Section 6. Led Indicators
• LED flashes number of communicating com- Y1 Stg1 Thermostat ponents in the system. Y2 Stg2 and Indoor Unit • (ex. communicating control with relay panel will equal two flashes) Bit Master Bitmaster/Clock Signal LED – Green W1 Stg1 • LED on when Clock is working...
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