Humidifier Control; Installation - Mitsubishi Electric M Series Service Manual
Multi-position air handler. indoor unit
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Also See for M Series:
- Manual (586 pages) ,
- Installation manual (120 pages) ,
- Application note (10 pages)
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10
HUMIDIFIER CONTROL
10-1. Control Specifications
The below table shows how the field installed humidifier and fan speed is controlled.
Mode (function) No.
Humidistat
output
Wired remote controller
(RF thermostat)
13 (113) 16 (116) CNF input
OFF
2
1
ON
OFF
2
ON
-
-
RC:Remote controller
The fan continues to run for 30 seconds after the humidifier stops.
10-2. Installation
A basic connection method is shown below.
SVA
Humidifier
On-site preparation
Maximum cable length is 10m(32ft)
Condition (no defrost/no error)
Heat operation & Thermo OFF
Heat operation & Thermo ON
Heat operation & Thermo OFF
Heat operation & Thermo ON
Heat operation & Thermo OFF
Heat operation & Thermo ON
Heat operation & Thermo OFF
Heat operation & Thermo ON
Except for heat operation
XA
XA
Humidistat
CN25 output
Fan speed
OFF
RC setting
OFF
RC setting
ON
High
OFF
RC setting
ON
High
OFF
RC setting
Indoor unit
control board
CN25
CNF
Use XA relay having following specifications
Rated voltage:12VDC
Power consumption:1W or less
Humidistat:Minimum applicable load 1mA at DC
Contact rating voltage:15VDC or more
Contact rating current:0.1A or more
24
© 2016 Mitsubishi Electric US, Inc.
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