Erv (Energy Recovery Ventilation) Control - Mitsubishi Electric MVZ Series Service Manual

11

ERV (ENERGY RECOVERY VENTILATION) CONTROL

11-1. CONTROL SPECIFICATIONS
The below table shows how the field installed ERV is controlled.
ERV output Condition
CNER input
OFF Cool/Heat/Fan operation
Defrost
STOP
ON Cool/Heat/Fan operation
Defrost
STOP
11-2. INSTALLATION
A basic connection method is shown below.
XF
ERV
On-site preparation
Maximum cable length is 10m(32ft)
Fan speed
RC setting
STOP
STOP
RC setting
STOP
Low
XB
XB
ERV switch
CN2C output
(=Fan output)
ON
OFF
OFF
ON
OFF
ON
Indoor unit
control board
CN2C
CNER
Use XB relay having following specifications
Rated voltage:12VDC
Power consumption:1W or less
ERV switch:Minimum applicable load 1mA at DC
Contact rating voltage:15VDC or more
Contact rating current:0.1A or more
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