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Model ERV Energy Recovery Unit
Remote Control Panel and Wiring
Schematics
Indicator Lights powered by the ER Unit
Dirty Filter Indicator (power by others)
Refer to Pressure Switch for voltage and load ratings.
7-Day Timer or On/Off Switch
G
C
R
7-Day Timer
S1 - Unit On/Off
Terminal Block
in Unit
Control Center
For 7-Day Timer, use blue and black wires.
Red wires should be capped off.
G
C
R
On
Off
BMS
Auto
Terminal Block
in unit
Control Center
Hand/Off/Auto Switch
Hand/Off/Auto Switch allows the unit to
“Off” - off
“On” - Manual Operation
“Auto” - Unit is controlled by BMS, RTU, etc.
NOTE: RTU controllers are by others.
The remote panel is available with a number of
different alarm lights and switches to control the unit.
The remote panel ships loose and requires mounting
and wiring in the field
The remote panel is available with the following
options:
• Uniton/offswitch
• Uniton/offlight
• 7-daytimeclock
• Hand/off/autoswitch
• Timedelayoverride
• Economizerlight
• Frostcontrollight
• Exhaustairdirtylterlight
• Outdoorairdirtylterlight
• Wheelrotationsensorlight
Refer to Electrical Connections section for Field Control
Wiring recommendations.
W1
12
7
6
Y2
Y1
G
C
R
NC
C
NC
C
NO
NO
Exhaust Dirty Filter
Supply Dirty Filter
Rotation Sensor
Economizer
PS2
PS3
Frost Control
Unit On/Off
NC
NC
NO
C
NO
C
Exhaust Dirty Filter
Supply Dirty Filter
Hot
L1
PS2
PS3