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CG450 Series
CGT450 Series
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
HOW TO INSTALL
1
WARNING – To prevent electrical shock or equip-
ment damage, power must be off during installa-
tion or servicing of the control. To prevent serious
burns, the boiler should be thoroughly cooled
before installing or servicing control. Only quali-
fied personnel may install or service the control
in accordance with local codes and ordinances.
Read instructions completely before proceeding.
4
Loosen the two control cover binding head
screws and remove the cover. Assemble the
chassis to the probe flange and secure with the
screws provided with the probe.
Low maintenance. No moving parts to wear stick or hang up,
as in float devices.
Solid state circuitry. Designed for the highest level of perfor-
mance and reliability.
Automatically shuts off burner, after delay, in a low water
condition to prevent dry firing.
Time delay allows water to feed above the probe to a safe
operating level.
INTERMITTENT LEVEL TEST – periodically monitors settled water
level for added protection of today's smaller steam boilers.
2
The probe may be installed in the
boiler above the lowest safe
water level established by the
boiler manufacturer. Most manu-
facturers provide a suitable open-
ing in the side of the boiler.
126 Bailey Road
North Haven, CT 06473
Phone: (203) 776-0473 • FAX: (203) 764-1711
www.hydrolevel.com
3
SAFE
WATER
LINE
Allow 1/4" clearance from the probe to any boil-
er 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.
5
Connect the ring terminal wire lead to the probe
terminal stud and secure with the lock washer
and wing nut provided. With the power removed,
proceed with installation and wiring according to
the instructions on pages 3-4. Upon completion
of wiring replace control cover.
1/4"
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Related Manuals for Hydrolevel Company CycleGard CG450 Series
Summary of Contents for Hydrolevel Company CycleGard CG450 Series
- Page 1 Low maintenance. No moving parts to wear stick or hang up, as in float devices. Solid state circuitry. Designed for the highest level of perfor- CG450 Series mance and reliability. CGT450 Series Automatically shuts off burner, after delay, in a low water Low Water Cut-Offs condition to prevent dry firing.
- Page 2 I N S TA L L AT I O N O F R E M O T E M O U N T E D M O D E L S O N LY A. To secure mounting plate to boiler jacket,* pre-drill two 3/32" pilot holes using the mounting plate as a template. Secure plate with sheet metal screws provided.
- Page 3 Wiring WARNING Electrical shock hazard. To prevent electrical shock, death or equipment damage, disconnect power supply before installing or servicing control. Install this control in accordance with all local codes and authorities having jurisdiction. Regulations of these authorities take precedence over the general instructions provided in this manual. MODEL CG450 FACTORY INSTALLED...
- Page 4 MODEL CGT450 (for boilers with tankless coil) OPTIONAL ACTIVATION Connect input voltage (120 VAC, 60 HZ) to terminals 1 and 2. Connect “LOW LIMIT” terminals on CycleGard control to the ter- minals on the tankless aquastat. Connect terminal 2 to burner circuit neutral. Connect terminal P2 to burner Circuit in series with other limit controls.
- Page 5 CycleGard Intermittent Level Test Feature To provide added protection to today’s smaller boilers, the CycleGard low water cut-off is equipped with an Intermittent Level Test. This important feature adds protection against false signals that can be caused by foam and volatile water conditions inside the boiler. The Intermittent Level Test removes power from the burner at preset intervals.
- Page 6 Operating Instructions NOTE: For proper low water cut-off operation, the boiler should be Test Feature on page 5). However, to provide optimal steaming cleaned at initial installation and periodically thereafter. Refer to the performance, it is still recommended that you clean the boiler in boiler manufacturer’s instructions for cleaning procedures.
- Page 7 VXT Water Feeder The VXT Water Feeder (available separately) can be installed with Hydrolevel or other low water cut-offs to automatically replenish boiler water in the event of a low water condition. The VXT offers programmable feed amount and feed delay settings. These can easily be set to ensure the proper feed amount and to provide adequate time for condensate to return to the boiler before starting a feed cycle.
- Page 8 In no event shall Hydrolevel Company be liable for any other loss or damage, whether direct, indirect, incidental or consequential.
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