Indoor Service Manual

Specications are subject to change without notice. © 2016 Mitsubishi Electric US, Inc.
27
ERV (ENERGY RECOVERY VENTILATION) CONTROL
11
The below table shows how the field installed ERV is controlled.
A basic connection method is shown below.
ERV output ConditionFan speed CN2Coutput
(=Fan output)
CNER input
OFFCool/Heat/Fan operation RC settin
g
ON
DefrostSTOPOFF
STOP STOP OFF
ON Cool/Heat/Fan operation RC settingON
DefrostSTOPOFF
STOP LowON
XB
XF
ERV
ERV switch
XB
On-site preparation
Maximum cable length is 10m(32ft)
CNER
CN2C
Indoor unit
controlboard
ERV power source
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
11-1. Control Specifications
11-2. Installation
The below table shows how the field installed E R V is controlled.
A bas ic connection method is shown below.
E R V output
C ondition
F an speed
C N2C output
(=F an output)
C NE R input
OF F
C ool/Heat/Fan operation
R C setting
ON
Defros t
S TOP
OF F
S TOP
S TOP
OF F
ON
C ool/Heat/Fan operation
R C setting
ON
Defros t
S TOP
OF F
S TOP
ON
XB
XF
E R V
E R V s witch
XB
On-s ite preparation
Maximum cable length is 10m(32ft)
C NE R
C N2C
Indoor unit
control board
E R V
power source
Use XB relay having following specifications
R ated voltage:12V DC
Power consumption:1W or less
E R V s witch:Minimum applicable load 1mA at DC
C ontact rating voltage:15VDC or more
C ontact rating current:0.1A or more
S TOP