Installation - Mitsubishi Electric PAA-A18AA1 Service Manual

9.2. Installation

A basic connection method is shown below.
13.5. Humidifier
Humidifier Control
Sequence of operation:
1. The humidistat closes CNF
2. The fan starts on high
3. CN25 provides 12VDC to turn on the Humidifier
(do not exceed 1 Watt draw per relay)
4. When the Humidistat opens, the fan continues to run for
30 seconds to clear the ductwork of moist air
5. If defrost starts during humidifier operation
CN25 de-energizes
Humidistat:
Non-Voltage a-contact input
Contact rating voltage >=15VDC
Contact Rating Current > = 0.1 A
Minimum Applicable Load =< 1mA at DC
Dip Switch
Humidistat Output
Setting
SW1-6 CNF Input
OFF
OFF*
ON
OFF
ON
ON
- -
RC: Remote controller
The fan continues to run for 30 seconds after the humidifier stops.
*Factory Setting
Specifications are subject to change without notice.
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1
max 30 ft.
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
38
Control board in control box
CN25 Output Fan Speed
OFF
RC setting
OFF
RC setting
ON
High
OFF
RC setting
ON
High
OFF
RC setting
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Control box