• TEST BUTTON FOR EASY DIAGNOSTICS
• MANUAL RESET LOCKOUT PROTECTION –
MEETS CSD-1 REQUIREMENTS
• POWER AND LOW WATER INDICATORS
• MOLEX CONNECTOR FOR EASY WIRING
• COMPACT SIZE ALLOWS FOR MOUNTING IN TIGHT SPACES
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Low Water Cut-Off
For Residential
Hot Water Boilers
24 VAC Operating Voltage
Model 1100M
Determine Mounting Location
The Safgard 1100M must be installed at or above the
minimum safe water level established by the boiler
manufacturer. The 1100M can be installed directly
into the boiler if a suitable tapping is available
훽
.
The 1100M can also be installed in the boiler piping
using a standard 3/4" tee
훾
.
Note:
When installing in piping, select a location
close to the boiler to ensure the 4' wiring harness will
reach the 24-Volt transformer. The cut-off should be
installed on the boiler side of the circulator or shut-off
valves.
IMPORTANT: Check for adequate clearance
(minimum 1/4") from metal probe sensor to any
surface inside the boiler or pipe.
Do not install in a location that could hold or trap
water in the event of a low water condition.
Apply Teflon
®
tape to
the threads of the
Model 1100M. Do
not use pipe dope or
other pipe sealants.
Hand tighten the
control into boiler
tapping or pipe tee.
Be careful not to
cross thread.
Note:
Do not use a
wrench. Hand tight-
en only.
Plug wire harness
into connector on
face of control.
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.
1
126 Bailey Road, North Haven, CT 06473 • Phone (203) 776-0473 • FAX (203) 764-1711 •
www.hydrolevel.com
