Mitsubishi Electric M Serie Manuel D'installation page 31

13.6. Humidifier
Part Number: CN24RELAY-KIT-CM3
Humidifier
Max 32 Ft.
12VDC
Coil
Humidistat (field)
Max 32 Ft.
Mode
(function) No.
13 16
a.
1
2
2
a.
1 -
CAUTION
If a heater is installed in a duct, do no use
Panel Heater Connector. By doing so, the
fan will turn off when the heater is on, which
may result in fire.
a.
Factory setting
b.
Remote controller
Specifications are subject to change without notice.
SVZ-KP12, 18, 24, 30, 36NA
Control Board In Air Handler
Air Handler
Humidistat
Output
CNF Input (No Defrost/No Error)
Heat operation & Thermo OFF
OFF
Heat operation & Thermo ON
Heat operation & Thermo OFF
ON
Heat operation & Thermo ON
Heat operation & Thermo OFF
OFF
Heat operation & Thermo ON
Heat operation & Thermo OFF
ON
Heat operation & Thermo ON
- No humidifier operation
The fan continues to run for 30 seconds after the humidifier stops.
When using the SPTB1 accessory, take special care when restarting power to
the system to ensure that both the indoor unit and outdoor unit are powered up
at the same time to avoid triggering a communication error.
31
Humidifier Control (CN25 Output is ON)
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 > = 15 VDC
• Contact Rating Current > = 0.1 A
• Minimum Applicable Load < = 1mA at DC
Condition CN25
Output
NOTE
Fan Speed
b.
OFF RC Setting
OFF RC Setting
ON High
OFF RC Setting
ON High
OFF RC Setting
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