Hydrolevel 3150 User Manual
Warning, Caution, Dual function design
1
83 Water Street • New Haven, CT 06511 • Phone (203) 776-0473 • FAX (203) 773-1019 •
www.hydrolevel.com
MODEL 3150
Combination Low Water
Cut-Off & Universal
Temperature Limit Control
for Oil-Fired Boilers
PATENT NO. 7,891,572
INSTALLATION INSTRUCTIONS
and OPERATING MANUAL
• Replaces Common Aquastat
*
Models – Can be installed on existing immersion
wells to replace both cold-start and triple-action Aquastats
®
. Industry standard wiring
designations make change-outs quick and easy.
• Digital Display – Easy to read LED continually displays boiler temperature. Also displays
temperature limit and differential settings during adjustment.
• Easy to Set – Dials for setting temperature limits and differentials eliminate complicated
programming.
• Thermal Pre-Purge Feature – Conserves fuel and meets 2012 DOE regulations by
circulating latent heat in the boiler to the heating zone before firing the burner.
•
*Aquastat is a registered trademark of Honeywell International, Inc.
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.
Dual Function
Design
Temperature Limit Control
Designed for cold start and tankless
coil boilers.
Low Water Cut-Off
Provides protection against potentially
dangerous low water conditions
when installed with the Hydrolevel
Electro-Well™ (see page 2 for details).
HydroStat 3150 Instructions Page 1