Install Instructions

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P.O. Box 1847 • New Haven, CT 06508 • 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

➊

Step

➋

Step

➌

Step

➍

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 tighten

only.

Plug wire

harness into

connector on

face of control.

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.

Model 1100 Instructions 8/13/03 2:52 PM Page 3

Summary of content (4 pages)

PAGE 1
Model 1100 Instructions 8/13/03 2:52 PM Page 3 • ADVANCED SOLID STATE DESIGN • TEST BUTTON FOR EASY DIAGNOSTICS Model 1100 Low Water Cut-Off For Residential Hot Water Boilers • POWER AND LOW WATER LED INDICATORS • MOLEX CONNECTOR FOR EASY WIRING • COMPACT SIZE ALLOWS FOR MOUNTING IN TIGHT SPACES 24 VAC Operating Voltage WARNING: To prevent electrical shock or equipment damage, power must be off during installation or servicing of the control.
PAGE 2
Model 1100 Instructions 8/13/03 2:52 PM Page 4 WIRING TO CONTROL CENTER For boilers equipped with a Honeywell R8285 Control Center or equivalent Step ➊ Step Y G C ➋ W R Connect the WHITE wire to C and the RED wire to R using the screw terminals on the control center. Connect the GREEN wire to any suitable, unpainted ground screw. Note: for operation of the control, the green wire must be connected to a ground source electrically common with boiler ground.
PAGE 3
Model 1100 Instructions 8/13/03 2:52 PM Page 5 WIRING TO 24 VAC TRANSFORMER For boilers using a standard 24 VAC transformer Step ➊ Step Connect RED wire to hot side of 24 Volt boiler transformer (R). Connect WHITE wire to common side of 24 Volt boiler transformer (C). Connect the GREEN wire to any suitable, unpainted ground screw. Note: for operation of the control, the green wire must be connected to a ground source electrically common with boiler ground.
PAGE 4
Model 1100 Instructions 8/13/03 2:52 PM Page 2 OPERATIONAL TEST PROCEDURE IMPORTANT: Do not run boiler unattended until the following procedure is completed 1. Before raising the water level above the Model 1100, turn on power to the boiler and set the thermostat to call for heat. Both the green “POWER” LED and amber “LOW WATER” LED should illuminate. The burner should not fire.