Installation Guide
2 18-HD68D1-10
2.4 Specifications
Specification Description
Product Model: BAY24VRPAC52DC
Product: Relay Panel for use with 24V indoor systems
Size: 8.0” width x 9.3” height x 1.9” depth
Storage Temperature: -40° to 175°F, 5% - 95% RH non-condensing
Operating Temperature: -40° to 150°F, 5% - 95% RH non-condensing
Input Power: 24 VAC from HVAC System (Range: 18-32 VAC)
Power Consumption: 4VA* (See the following table for system transformer sizing guidelines.)
Wire usage: Minimum 18 gauge NEC approved control wiring
HVAC System Type Compatible: Standard (gas/electric), Heat Pump, Dual Fuel
Multistage System Compatible: Standard HVAC Systems: 3-stage heating, 2-stage cooling
Heat Pump Systems: 5-stage heating (2-compressor, 3 aux heat), 2-stage cooling
LEDs: 11 green, 1 amber
Communications: 12 VDC
AUX Contacts: Dry contacts, 18–30 VAC, 2A max
2.3 Optional Accessories
Sensor Description
ZZSENSAL0400AA Indoor Temperature Sensor
BAYSEN01ATEMPA Outdoor Temperature Sensor
2.2 Contents in Box
The following parts are included in product model
BAY24VRPAC52DC:
1 - Relay Panel cover
1 - Relay Panel base
4 - Mounting screws/anchors
4 - Wire ties
1 - Installation Guide
Aux2
Relay Panel
Bit Master
Comm
HVAC System
Sensors
Thermostat
and Indoor Unit
Outdoor
Remote
Data
Hot
Com
D R
B
Indoor
RS
RS
ODT
ODT
24 Vac
Only
24 Vac
Only
24 Vac
Only
Aux2
Aux1
Aux1
Hum
Hum
BK
PWM
Fan
G
W3 Stg3
W2 Stg2
W1 Stg1
Y1 Stg1
Y2 Stg2
0 SOV
NORM
Dual Fuel
Switch
DUAL
Relay Panel
2.1 Overview
The Relay Panel is a wall mounted low voltage
panel that enables communicating controls to
operate with 24 VAC HVAC equipment. Only three
wires are required from the control to the Relay
Panel.
This Relay Panel controls the operation of heating,
cooling, heat pump and dual fuel systems.
For specific wiring applications, see Field Wiring
Diagrams.
*A or T
Relay Panel
Section 2. General Information
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