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CG470 Series
Low Water Cut-Offs
120 VAC Operating Voltage
For Steam Boilers
Max. Pressure 15 psi
U.S. Patent Nos. 5,739,504 & 6,390,027
MOUNTING THE CONTROL
The probe may be
installed in the boiler
above the lowest safe
water level established by
the boiler manufacturer.
ost 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.
W RNING
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.
W RNING
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 •
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.
STEP 1
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
SAFE
Teflon tape to seal probe piping
WATER
threads may insulate the control
LINE
from boiler ground. This could
result in the control not operating.
1
Screw the probe
STEP 3
Plug the wire lead from the probe into the
mating connection on the circuit board.
C UTION
should be thoroughly cooled before installing or
servicing control.
1/4"
To prevent serious
burns, boiler
www.hydrolevel.com
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Related Manuals for Hydrolevel Company CycleGard CG470 Series
Summary of Contents for Hydrolevel Company CycleGard CG470 Series
- Page 1 Automatically shuts off burner, after delay, in a low water condition to prevent dry firing. CG470 Series Enhanced Intermittent Level Test technology – active only when water is at boiling temperature. Provides added protec- tion in foaming and volatile water conditions. Low Water Cut-Offs Time delay sequencing prevents burner short-cycling caused For Steam Boilers...
- Page 2 WIRING – Model CG470 Connect input voltage (120 VAC, 60 HZ) to Connect terminal 2 to burner circuit neutral. Optional water feeder connection. terminals 1 and 2. Connect terminal P2 to burner Circuit in Connect feeder N to terminal 2. Connect Feeder series with other limit controls.
- Page 3 Hi Temp Lock-Out Enhanced Intermittent Level Test Feature Unlike any other steam low water cut-off, the To provide added protection to today’s small- CG470 monitors boiler temperature in addi- er boilers, CycleGard Model CG470 is The optional Smart Cycle feature is designed to tion to water level.
- Page 4 Pilot Duty LIMITED MANUFACTURERʼS WARRANTY We warrant products manufactured by Hydrolevel Company to be free from defects in Company be liable for any other loss or damage, whether direct, indirect, incidental or material and workmanship for a period of two years from the date of manufacture or consequential.
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