Green
(Power On)
Red
(Low Water)
2
SPECIFICATIONS
INSTALLATION
TOOLS NEEDED:
One (1) flathead screwdriver, and one (1) pipe wrench.
For Remote Installations a level and power drill will be required.
Electrical Ratings
Series PS-802 for Steam Boilers
Electronic circuitry prevents nuisance burner cycling:
15 second Delay on Make (DOM)
10 second Delay on Break (DOB)
Conductive liquid required
(water/glycol mixtures up to 50% concentration may
be used)
Automatic reset after power outage
Maximum Pressure:
15 psi (1kg/cm
2
)
All models include a provision for adding an alarm or
automatic water feeder.
Series PS-852 for Hot Water Boilers
No time delays provided
Conductive liquid required
(water/glycol mixtures up to 50% concentration
may be used)
Automatic reset after power outage
Maximum Pressure:
160 psi (11.2kg/cm
2
)
Maximum Water Temperature:
250˚F (121˚C).
All models include a provision for adding an alarm
or automatic water feeder.
Control Voltage:
24 VAC
HZ:
50/60
Probe Sensitivity:
For models with red (low water) and amber (test)
lights: 3,000 ohm
For models with red (low water) and green (power)
lights: 7,000 ohm
Control Power Consumption:
For models with red (low water) and amber (test)
lights: 2 VA
For models with red (low water) and green (power)
lights: 1.7 VA
Motor Switch Rating (Amperes)
Model
Voltage
Full Load
Locked Rotor
Pilot Duty
24 VAC
24 VAC
—
—
50 VA at
24 VAC
The Series 800 controls provide con-
tinuous protection against low water
conditions for residential, commercial
and industrial applications. Newer
models feature increased probe
sensitivity to prevent nuisance shut-
downs, and a new test feature that
diagnoses shorted probe problems at
installation. The user-friendly diag-
nostic LEDs simplify installation and
troubleshooting, ensuring proper
operation and saving time.
Amber
(Test)
Red
(Low Water)
Older Models
New Models
Temperature:
Storage: -40˚F to 120˚F (-40˚C to 49˚C)
Ambient: 32˚F to 120˚F (0˚C to 49˚C)
Humidity:
85% (non-condensing)
Electrical Enclosure Rating:
NEMA 1 General Purpose
