Hydrolevel Company Safgard 1150 User manual
83 Water St. • New Haven, CT 06511 • Phone: (203) 776-0473 • FAX: (203) 773-1019 • www.hydrolevel.com
• ADVANCED SOLID STATE DESIGN
• TEST BUTTON FO EASY DIAGNOSTICS
• POWE AND LOW WATE LED INDICATO S
• COMPACT SIZE ALLOWS FO MOUNTING IN TIGHT SPACES
• DESIGNED FO GAS AND OIL FI ED BOILE S
Ste
Ste
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.
emove 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. eplace
the center extended nut. Secure the control box by
tightening all three extended nuts.
IMPORTANT: Extended nuts must be tightened
securely for proper grounding.
WA NING: To prevent electrical s ock or equipment damage, power must be off during installation or servicing of t e control. To pre-
vent serious burns, t e boiler s ould be t oroug ly cooled before installing or servicing control. Only qualified personnel may install or
service t e control in accordance wit local codes and ordinances. Read instructions completely before proceeding.
Ste
Model 1150 Instructions: Model 1150 Instructions 9/24/10 9:17 AM Page 3
STANDARD WIRING METHOD SE WIRE N TS FOR ALL CONNECTIONS
This wiring method will shut down all power to the boiler in the event of a low water condition.
OPTIONAL WIRING METHOD SE WIRE N TS FOR ALL CONNECTIONS
This wiring method will interrupt power only to the burner circuit in the event of a low water condition.
Ste Connect the black wire (H) and one of
the yellow wires (C T-OFF) from the Safgard 1150 to
the hot 120 VAC lead coming from the service switch.
Ste Connect the second yellow wire
(C T-OFF) from the Safgard 1150 to the (L1) boiler
connection.
Connect the black wire (H) from the Safgard
1150 to the hot 120 VAC lead coming from
the service switch. Connect the white wire (N)
to the neutral 120 VAC lead. Locate and
break into the burner circuit. Connect the yel-
low wires (C T-OFF) from the Safgard 1150
in series with other limit controls as shown.
Ste Connect the white wire (N) from the
Safgard 1150 to the neutral 120 VAC lead and to the
(L2) boiler connection.
Model 1150 Instructions: Model 1150 Instructions 9/24/10 9:17 AM Page 4
OPERATIONAL TEST PROCEDURE
IMPORTANT: Do not run boiler unattended until the following procedure is completed
1. Before raising the water level above the Model 1150, turn on power to the boiler and set the thermostat to call for heat. Both
the green “POWE ” LED and amber “LOW WATE ” LED should illuminate. The burner should not fire. IMPO TANT: If the
burner fires with no water at the probe, immediately shut down power to the boiler and refer to the Trouble Shooting instruc-
tions below.
2. Proceed to fill the boiler with water. When water reaches the LWCO position, the burner should fire. If the burner does not
fire, refer to the Trouble Shooting instructions below.
3. Turn off the power to the boiler and finish filling the system.
4. Before leaving the job, power up the system and push the TEST button on the Model 1150 to simulate a low water condition.
The amber “LOW WATE ” LED should illuminate and the burner should shut down.
MAINTENANCE
EVERY YEAR Check control operation annually by pressing the TEST button. The amber “LOW WATE ” LED should illu-
minate and the burner should shut down.
5 YEARS emove the low water cut-off every five years and clean all surfaces in contact with water.
TROUBLE SHOOTING
IF THE B RNER DOES NOT SH T DOWN
(when water is below the probe or when the TEST button is pressed)
1. Turn off boiler power immediately and re-check wiring.
2. Turn off boiler power and drain system. emove low water cut-off and check for adequate clearance – no metal should be in
contact with the controlʼs metal probe tip.
IF THE B RNER DOES NOT FIRE
1. Make sure water has reached the level of the control.
2. Check for proper ground. The 1150 grounds through the probe to the boiler shell or pipe tee. The control box mounting
screws ground the circuit board to the probe. Check to ensure that both mounting screws are tightened securely and that the
probe is not insulated from the boiler shell or tee with excessive use of Teflon tape or sealing compound.
3. Check to ensure the controlʼs metal probe tip is not surrounded by an air pocket. Shut down power to the boiler and
slowly loosen, but do not remove, the control. Allow any air to escape. When water begins to seep past threads, retighten
the control.
4. e-check wiring and check for correct incoming voltage.
Model 1150 Instructions: Model 1150 Instructions 9/24/10 9:17 AM Page 5
LIMITED MAN FACT RERʼS WARRANTY
We warrant products manufactured by Hydrolevel Company to
be free from defects in material and workmans ip for a period
of two years from t e date of manufacture or one year from
t e date of installation, w ic ever occurs first. In t e event of
any claim under t is warranty or ot erwise wit respect to our
products w ic is made wit in suc period, we will, at our
option, repair or replace suc products or refund t e purc ase
price paid to us by you for suc products. In no event s all
Hydrolevel Company be liable for any ot er loss or damage,
w et er direct, indirect, incidental or consequential. T is war-
ranty is your EXCLUSIVE remedy and s all be IN PLACE OF
any ot er warranty or guarantee, express or implied, includ-
ing, wit out limitation, any warranty of MERCHANTABILITY or
fitness for a particular purpose. T is warranty may not be
assigned or transferred and any unaut orized transfer or
assignment t ereof s all be void and of no force or effect.
83 Water St. • New Haven, CT 06511 • Phone: (203) 776-0473 • FAX: (203) 773-1019 • www.hydrolevel.com
DIMENSIONS
SPECIFICATIONS
VOLTAGE 120 VAC, 60 HZ
B RNER CONTACTS 5.8 FLA, 34.8 L A, 125 VA pilot duty @ 120 VAC, 60 HZ
MAX PRESS RE 160 PSI
MAX WATER TEMPERAT RE 250°F (121°C)
Model 1150 Instructions: Model 1150 Instructions 9/24/10 9:17 AM Page 2
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