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Hydrolevel 1100 User Manual

Warning, Caution

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83 Water Street • 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

• MOLEX CONNECTOR FOR EASY WIRING

• COMPACT SIZE ALLOWS FOR MOUNTING IN TIGHT SPACES

Step

Step

Step

Step

Low Water Cut-Off
For Residential
Hot Water Boilers

24 VAC Operating Voltage

Model 1100

Determine Mounting Location

The Safgard 1100 must be installed at or above the

minimum safe water level established by the boiler

manufacturer. The 1100 can be installed directly into

the boiler if a suitable tapping is available

. The

1100 can also be installed in the boiler piping using a

standard 3/4" tee

.

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 1100. 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.

Model 1100 Instructions: Model 1100 Instructions 4/30/12 10:24 AM Page 1