Lattner Boiler Company H.E. Instruction Manual page 46

OPERATION
Maximum Pressure: 150 psi (10.5 kg/cm
Electrical Ratings
PumpCircuit Rating (Amperes)
Voltage Full Load
120 VAC 7.4
240 VAC 3.7
Enclosure rating: NEMA 1 General Purpose
Settings and Differential Pressures
Values are ± 8" (3.2mm).
Series 150, 150S, 157 and 157S
Pressure Setting
Pump Off
0 psi
Pump On
(0 kg/
Burner On
cm )
2
Burner Off
Pump Off
150 psi
Pump On
(10.5 kg/
Burner On
cm 2 )
Burner Off
2
150 psi (10.5 kg/cm ) Levels
3 / "
1
8
DIFFERENTIAL
(35mm)
PUMP
OFF
BURNER
OFF
3
/ "
4
DIFFERENTIAL
(19mm)
PUMP OFF
PUMP ON
7 / "
8
DIFFERENTIAL
(22mm)
BURNER ON
BURNER OFF
2
2
)
Locked Rotor Pilot Duty
44.4
345 VA at
120 or 240 VAC
22.2
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
BURNER
"CUT-OFF LEVEL"
AT CAST LINE
Alarm Circuit Rating
Voltage Amps
120 VAC 1
240 VAC 1/2
Model 150-MD, 150S-MD, 157-MD and 157S-MD
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
150 psi (10.5 kg/cm
13
/ "
1
16
DIFFERENTIAL
(46mm)
PUMP
OFF
BURNER
OFF
3 / "
4
DIFFERENTIAL
(19mm)
PUMP OFF
PUMP ON
Motor Horsepower
Voltage Hp
120 VAC
1/3
240 VAC 1/3
Approximate
Distance Above
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
2
) Levels
NORMAL BOILER
WATER LINE
BURNER CUT-OFF LEVEL
" (9.5mm) BELOW
3 /
8
CAST LINE