Product Overview

Does It All!

The Universal

Temperature Limit and

Low Water Cut-Off for

Oil and Gas Fired Boilers

䡵

Replaces Cold Start and

Triple-Action AquaStats*

• Install HydroStat on existing immersion well –

for full temperature functionality,

• Install HydroStat on an Electro-Well

™

– to add low water cut-off protection

䡵

Simple dial-type temperature and differential settings

䡵

Easy to wire – uses the same terminal designations as common Aquastat

models.

䡵

Dynamic Temperature Display

䡵

Four on-board diagnostic indicating lights

䡵

Saves time, materials and wiring

Patent Pending *Aquastat is a registered trademark of Honeywell International, Inc.

Innovators in Boiler Protection

Since 1965

MODEL 3100

for gas-fired boilers

MODEL 3150

for oil-fired boilers

PAGE 1
Does It All! The Universal Temperature Limit and Low Water Cut-Off for Oil and Gas Fired Boilers MODEL 3100 for gas-fired boilers 䡵 Replaces Cold Start and Triple-Action AquaStats* MODEL 3150 for oil-fired boilers • Install HydroStat on existing immersion well – for full temperature functionality, or • Install HydroStat on an Electro-Well™ – to add low water cut-off protection 䡵 Simple dial-type temperature and differential settings 䡵 Easy to wire – uses the same terminal designations as common Aqua
PAGE 2
HydroStat ® can be used in two ways. By installing the control on an existing immersion well, HydroStat® can be used as a universal replacement for common Aquastat® models. Whether it’s a cold start or a tankless coil boiler, Hydrostat® will provide all the temperature functions of the control being replaced. Or, install HydroStat® on a Hydrolevel Electro-Well™ (sold separately) to automatically activate the low water cut-off function.