83 Water St. • New Haven, CT 06511 • Phone: (203) 776-0473 • FAX: (203) 773-1019 •
www.hydrolevel.com
• ADVANCED SOLID STATE DESIGN
• TEST BUTTON FOR EASY DIAGNOSTICS
• POWER AND LOW WATER LED INDICATORS
• COMPACT SIZE ALLOWS FOR MOUNTING IN TIGHT SPACES
• DESIGNED FOR GAS AND OIL FIRED BOILERS
Step
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Step
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Low Water Cut-Off
For Residential
Hot Water Boilers
120 VAC Operating Voltage
Model 1150
Determine Mounting Location
The Safgard 1150 must be installed at or above the
minimum safe water level established by the boiler
manufacturer. The 1150 can be installed directly into
the boiler if a suitable tapping is available
훽
. The
1150 can also be installed in the boiler piping using a
standard 3/4" tee
훾
.
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.
Remove center
extended nut.
Apply pipe
sealing
compound to
probe threads
and install in
boiler or tee.
Tighten so that
the two smaller
extended nuts
are horizontally
aligned.
Mount the control box on the probe by aligning the
keyhole slots with the two extended nuts. Replace
the center extended nut. Secure the control box by
tightening all three extended nuts.
IMPORTANT: Extended nuts must be tightened
securely for proper grounding.
WARNING:
To prevent electrical shock or equipment damage, power must be off during installation or servicing of the control. To pre-
vent serious burns, the boiler should be thoroughly cooled before installing or servicing control. Only qualified personnel may install or
service the control in accordance with local codes and ordinances. Read instructions completely before proceeding.
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Model 1150 Instructions: Model 1150 Instructions 9/24/10 9:17 AM Page 3
