SKE Steam Humidifier
Installation Instructions and User Manual
20
8.
Low voltage control connections
8.1.
''ON/OFF'' Humidifier
(Illus. 33)
8.2.
Modulating Humidifier
8.2.1. Connection to the Humidifier control terminal block
Connection to HRO20 humidistat or HRO20 with remote humidity sensor (SHR10 or SHC80).
(Illus. 34)
5 Vdc
Low voltage control
terminal block
High voltage power
terminal block
Humidistat
High
limit
Pressure
Differential
switch
5 Vdc
1 2
2
1
7 8 9
h u m id istat
2
4
V
A
C
P re ssu re D iffe re n tia l
sw itch
H ig h lim it
1
4
3
2
F
8
7
5
6
9
C o n tro l term in al
b lo ck w irin g
H R O 20
1 6
1 4
1 5
1 3
1 2
M
O
D
S
e
t
p
o
in
t
%
R
H
C
O
M
S K E
h u m id istat
H ig h lim it
1
4
3
2
F
8
7
5
6
9
C o n tro l term in al
b lo ck w irin g
H R O 20
S K E
24 V A C
1
6
1
4
1
5
1
3
1
2
M O D
% R H
C O M
P re ssu re D iffe re n tia l
sw itch
+
S H R 10
o r
S H C 80
24 V A C
3
% R H
C O M
% R H input
