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,
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 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
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