Submittal Sheet
Boiler Controls
Low Water Cut-Offs – Electronic
For Steam Boilers
PSE-800-M
Manual Reset LWCO
• Primary or Secondary control on hot water boilers
• Secondary control on steam boilers
• Manual reset models meet requirements of ASME Standard
CSD-1. If the control is in a low water condition when there is
an interruption of power, the control will remain in a low water
condition when power is restored. The reset button will need
to be pressed when the water level is restored to a level above
the probe to allow the burner to fire.
Standard Features
• Green power in on indicating LED
• Red low water indicating LED
• 60-second delay before lockout.
• Test button
• Self-Cleaning probe
• No lock out with loss of power if probe is in water
Series PSE-800-M
Ordering Information
Model Part Weight
Number Number Description lbs. (kg)
PSE-801-M-120 153601 120V Manual Reset w/standard probe 2.7 (1.2)
PSE-801-M-U-120 153603 120V Manual Reset w/ext. barrel probe (‘U’) 2.7 (1.2)
PSE-802-M-24 153602 24V Manual Reset w/standard probe 2.7 (1.2)
PSE-802-M-U-24 153604 24V Manual Reset w/ext. barrel probe (‘U’) 2.7 (1.2)
®
®
Electrical Ratings
Dimensions, in. (mm)
AB C
DE F GHJK
All U Std U
4
1
⁄4 (108) 1
9
⁄16 (40) 3
1
⁄16 (78) 2
1
⁄8 ( 54 ) 1
9
⁄16 (40) 1
3
⁄4 (20)
13
⁄15 (21) 5
13
⁄16 (148) 1
3
⁄8 (35)
3
⁄4 (20) 2
7
⁄8 (73)
7
⁄8 (22)
Switch Rating (Amperes)
Model Voltage Full Load
Locked Rotor
Pilot Duty
24 VAC 24 VAC ——
50 VA at
24 VAC
120 VAC
120 VAC 7.5 43.2
125 VA at
240 VAC 3.75 21.6
120 or 240 VAC
50 or 60 Hz
• Probe Sensitivity: 7,000 ohms
• Power Consumption: 1.7 VA @ 24 VAC
3.6 VA @ 124 VAC
• Enclosure Rating: NEMA 1 General Purpose
Maximum Steam Pressure: 15 psi (1.0 kg/cm
2
)
Maximum Water Pressure: 160 psi (11.2 kg/cm
2
)
Maximum Water Temperature: 250˚F (121˚C)
Probe Sensitivity: 7,000 ohm
Probe Specifications
Control Unit
Temperature:
Storage: -40˚F to 135˚F (-40˚C to 57˚C)
Ambient: 32˚F to 135˚F (0˚C to 57˚C)
Humidity: 85% (non-condensing)
CAUTION
Do not use “manual reset” models with electric
automatic water feeders.
Failure to follow this caution can cause flooding and
property damage.