SKR Humidifier – kit N
User Manual
www.neptronic.com
14
10. Description of the control PC Board
The Printed Circuit Board is equipped with an advanced microprocessor, which controls all humidifier functions.
10.1.
P.C. Board for ON/OFF Humidifier (standard)
TB2
Dry contact (TB2) to connect to fan relay in order to
activate the ventilation system fan on call for humidity
(3amp, 24Vac).
TB3
Dry contact (TB3) for remote alarm annunciation (1amp,
24Vac).
TB4
Terminal to connect the airflow proving switch and the high
limit humidistat (see fig.12a)
TB5
Terminal to connect the humidistat or Building Automation
System (see fig.12a).
DS1
Dip switches (DS1) setting:
(Fig 14b)
Dip switch setting
DS1-3 : Dip switch is not used
Note: Depending on the local water conditions, service of
the humidifier may be required prior to the ''service
required'' alarm setting (see section 14, Maintenance).
(Fig. 14a)
Top view
O
N
1
2
3
Drain every
2
hours of
operation
''Service required''
alarm appear after
750
hours of operation
O
N
1
2
3
Drain every
6
hours of
operation
''Service required''
alarm appear after
1500
hours of
operation
Transformer
T
B
2
T
B
3
T
B
4
T
B
5
O
N
1
2
3
