Gems Lattner, Instruction Manual

Page: 55 / 66

3
Approximate
Distance Above
Cast Line Differential
Setting In. (mm) In. (mm)
Motorized
15
/
16
(24)
Valve Closed
5 /
16
(8)
Motorized
5
/
8
(16)
Valve Open
Burner On
5
/
8
(16)
3 /
8
(16)
Burner Off
1
/
4
(6.4)
Motorized 1
3
/
8
(41)
3
/
4
(19)
Valve Closed
Motorized
5
/
8
(16)
Valve Open
Burner On
7
/
8
(22)
7 /
8
(22)
Burner Off 0 (0)
BURNER OFF
BURNER ON
7 /
8
"
DIFFERENTIAL
(22mm)
MOTORIZED
VALVE
CLOSED
BURNER
OFF
BURNER
“CUT-OFF LEVEL”
AT CAST LINE
NORMAL BOILER
WATER LINE
1
3 /
8
"
DIFFERENTIAL
(35mm)
MOTORIZED
VALVE
CLOSED
MOTORIZED
VALVE
OPEN
3
/
4
"
DIFFERENTIAL
(19mm)
Values are ± 8 ” (3.2mm).
NOTE: Due to the slower operation of some
motorized valves, complete valve opening
or closing will occur at slightly different
levels than indicated above.
Model 158/158S
150 psi (10.5 kg/cm
2
) Levels
0 psi
(0 kg/
cm
2
)
150 psi
(10.5 kg/
cm
2
)
Pressure
Settings and Differential Pressures (continued)
150 psi
(10.5 kg/
cm 2 )
MOTORIZED
VALVE
OPEN
CLOSED
3
/
4
"
DIFFERENTIAL
(19mm)
MOTORIZED
VALVE
CLOSED
BURNER
OFF
NORMAL BOILER
WATER LINE
1
13 /
16
"
DIFFERENTIAL
(46mm)
BURNER CUT-OFF LEVEL
3 /
8
" (9.5mm) BELOW
CAST LINE
Approximate
Distance Above
Cast Line Differential
Setting In. (mm) In. (mm)
Pump Off
15
/
16
(24)
3
/
8
(16)
Pump On
9
/
16
(14)
Burner Off 0 (0) N/A
Pump Off 1
7
/
16
(37)
3
/
4
(19)
Pump On
11
/
16
(17)
Burner Off -
3
/
8
(-16)
N/A
Model 158-MD/158S-MD
0 psi
(0 kg/
cm 2 )
Pressure
150 psi (10.5 kg/cm
2
) Levels
NOTE: Due to the slower operation of some
motorized valves, complete valve opening
or closing will occur at slightly different
levels than indicated above.
Page 55