Table of Contents
Advertisement
Settings and Differential Pressures (continued)
Values are ± 8" (3.2mm).
Model 158S
Pressure
Setting
Motorized
Valve Closed
0 psi
Motorized
(0 kg/
Valve Open
cm
2
)
Burner On
Burner Off
Motorized
Valve Closed
150 psi
Motorized
(10.5 kg/
Valve Open
cm
2
)
Burner On
Burner Off
2
150 psi (10.5 kg/cm
) Levels
3
/
"
1
8
DIFFERENTIAL
(35mm)
MOTORIZED
VALVE
CLOSED
BURNER
OFF
3
/
"
4
DIFFERENTIAL
(19mm)
MOTORIZED
VALVE
CLOSED
MOTORIZED
VALVE
OPEN
7
/
"
8
DIFFERENTIAL
(22mm)
BURNER ON
BURNER OFF
NOTE: Due to the slower operation of some
motorized valves, complete valve opening
or closing will occur at slightly different
levels than indicated above.
Approximate
Distance Above
Cast Line
Differential
In. (mm)
In. (mm)
15
/
(24)
16
5
/
(8)
16
5
/
(16)
8
5
/
(16)
8
3
/
(16)
8
1
/
(6.4)
4
3
1
/
(41)
8
3
/
(19)
4
5
/
(16)
8
7
/
(22)
8
7
/
(22)
8
0
(0)
NORMAL BOILER
WATER LINE
Model 158S-MD
Distance Above
Pressure
Setting
Pump Off
0 psi
Pump On
(0 kg/
cm
)
2
Burner Off
Pump Off
150 psi
(10.5 kg/
Pump On
cm
)
2
Burner Off
2
150 psi (10.5 kg/cm
) Levels
13
/
"
1
16
DIFFERENTIAL
(46mm)
MOTORIZED
VALVE
CLOSED
BURNER
OFF
3
/
"
4
DIFFERENTIAL
(19mm)
MOTORIZED
VALVE
OPEN
CLOSED
NOTE: Due to the slower operation of some
motorized valves, complete valve opening
or closing will occur at slightly different
levels than indicated above.
Approximate
Cast Line
Differential
In. (mm)
In. (mm)
15
/
(24)
16
3
/
(16)
8
9
/
(14)
16
0
(0)
N/A
7
1
/
(37)
16
3
/
(19)
4
/
(17)
11
16
N/A
-
/
(-16)
3
8
NORMAL BOILER
WATER LINE
3
Advertisement
Table of Contents
