Greenheck ERCH - Energy Recovery Unit with Packaged DX (468151) - Manual (Page 20)

20
Energy Recovery Unit with Packaged DX
OPTIONAL ACCESSORIES
G
C
R
7-Day Timer or On/Off Switch
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:
• Unit on/off switch
• Unit on/off light
• 7-day time clock
• Hand/off/auto switch
• Dirty filter light
• Economizer light
• Frost control light
• Wheel rotation sensor light
S1 - Unit On/Off
Refer to Electrical Connections section for Field Control Wiring recommendations.
Remote Control Panel and Wiring Schematics
7-Day Timer
Terminal Block
in
Unit Control
Center
For 7-Day Timer, use blue and black wires .
Red wires should be capped off .
G
C
R
Hand/Off/Auto Switch
Terminal Block
in
Unit Control
Center
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 .
On
Off
BMS
Auto