HydroLevel Controls Hydrostat 3250 Plus Aquastat & LWC
Product Support

Replaces Cold Start and Triple-Action Aquastats
• Install HydroStat on existing immersion well – for full temperature and boiler reset functionality, or
• Install HydroStat on an Electro-Well™ – to add low water cut-off protection

Easy Dial Type Set-Up
• Simply dial in the Temperature Limit and Economy settings

Dynamic Temperature Display
• Clearly displays boiler temperature
• Instantly changes to show setting whenever any dial is adjusted

LED Status Lights
• Displays which functions are active and which function is not allowing the burner to fire

Test/Settings Button
• Tests the low water cut-off and displays all control settings

Easy to Wire
• Uses the same terminal designations as common Aquastat® models

Smart DHW Priority
• Closely monitors boiler temperature to prioritize domestic hot water calls when needed

Installation Manual Wiring Guide Literature
Available Models
BRAND ORDER NO. DESCRIPTION PHOTO
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Hydrolevel 45-1100 24V LOW WATER CUTOFF Login
Hydrolevel 45-1150 120V LOW WATER CUT-OFF Login
Hydrolevel 45-550 LOW WATER CUTOFF 120VAC MANUAL RESET & TEST BUTTON Login
Hydrolevel 48-102 Hystrostat Remote Mount Kit with 48" Sensor Login
Hydrolevel 48-140 OS-100 Outdoor Sensor Kit for Hydrostat 3250-Plus Login
Hydrolevel 48-201 EW-201 STANDARD ELECTRO-WELL, 3/4" NPT Login
Hydrolevel 48-202 EW-202 Extended Electro-Well, 3/4" NPT for tankless coil boilers Login
Hydrolevel 48-205 EW-205 Electro-Well 3/4" Extra Short Immersion Well Login
Hydrolevel 48-3000 3000 FUEL SMART CONTROL (24V) FOR COLD START OPERATION Login
Hydrolevel 48-3150 20V Hydrostat Universal Temperature Limit and Low Water Cut Off for Oil Boilers with Tankless Coil Login
Hydrolevel 48-3200 3200-PLUS Fuel Smart Hydrostat Gas Boilers 120v (24v Output) Temp Limit Login
Hydrolevel 48-3250 3250-PLUS Fuel Smart Control Only Login
Hydrolevel C-HH3250KIT 3250 Plus Control Kit Includes: Control, Immersion Well & Remote Mount Kit Login