Hydrolevel CG470 Series - Manual

1/4"
Automatically shuts off burner, after delay, in a low water
condition to prevent dry firing.
Enhanced Intermittent Level Test technology – active only
when water is at boiling temperature. Provides added protec-
tion in foaming and volatile water conditions.
Time delay sequencing prevents burner short-cycling caused
by momentary dips in water level and allows a water feeder
to replenish water to a level above the probe.
Integral temperature sensor provides High Limit Lock-Out
feature for an unprecedented level of boiler protection.
The probe may be
installed in the boiler
above the lowest safe
water level established by
the boiler manufacturer.
Most manufacturers pro-
vide a suitable tapping in
the side of the boiler.
STEP 2 Loosen the two control cover screws and remove the cover.
Assemble the chassis to the probe flange and secure with the screws provided.
STEP 3 Plug the wire lead from the probe into the
mating connection on the circuit board.
STEP 1 Screw the probe
into the LWCO tapping in the boil-
er. Allow 1/4" clearance from the
probe to any boiler surface, tube
or baffle. NOTE: Excessive use of
Teflon tape to seal probe piping
threads may insulate the control
from boiler ground. This could
result in the control not operating.
Low Water Cut-Offs
For Steam Boilers
120 VAC Operating Voltage
Max. Pressure 15 psi
U.S. Patent Nos. 5,739,504 & 6,390,027
CG470 Series
WARNING Electrical shock hazard. To prevent electrical shock, death or
equipment damage, disconnect power supply before
installing or servicing control. Only qualified personnel may install or service this control in
accordance with local codes and ordinances. Read instructions completely before proceeding.
CAUTION To prevent serious
burns, boiler
should be thoroughly cooled before installing or
servicing control.
WARNING Frozen pipes/water damage. Central heating systems are prone to shut down as a result of power or fuel outages,
safety related fault conditions or equipment failure. Installation of freeze protection monitoring or other precautions
is recommended for unattended dwellings in climates subject to sustain below-freezing temperatures.
83 Water Street • New Haven, CT 06511 • Phone (203) 776-0473 • FAX (203) 773-1019 • www.hydrolevel.com
1
MOUNTING THE CONTROL
SAFE
WATER
LINE