Greenheck Fan HEAT RECOVERY UNIT WITH EVAPORATIVE COOLING HRE-20 - Manual (Page 25)

25
OPTIONAL ACCESSORIES
The remote panel is a series of junction boxes ganged
together and includes a stainless steel face plate . 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
• Time delay override
• Exhaust air dirty filter light
• Outdoor air dirty filter light
• Economizer light
• Frost control light
• Wheel rotation sensor light
Refer to Electrical Connections section for Field Control Wiring recommendations.
Remote Control Panel and Wiring Schematics
G
C
R
7-Day Timer or On/Off Switch
Timer
Override
S1 - Unit On/Off
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