Resideo L4008E1156 Control Module – Precision Aquastat® Single-Function

AQUASTAT®

The boiler industry-standard, Resideo Aquastats have a proven track record, usage and a large
installed base. Our electronic Aquastat® family builds on this reputation while adding performance enhancing features. Resideo service parts have you covered, offering universal compatibility and
improved service call efficiency — while keeping both distributor and contractor satisfaction in mind.
When selecting an Aquastat® for your next job, look for these Resideo features:
• Broad range and flexibility covers a variety of applications and needs
• Universal versions allow multiple mounting and configuration capability
• Universal versions reduce inventory and assure truck availability
• Electronic versions include communications as a standard feature, allowing add-on efficiency,
troubleshooting and monitoring capability
• EnviraCOM™ communications-enabled

MULTI-FUNCTION
L7224
UNIVERSAL OIL ELECTRONIC AQUASTAT®

• Diagnostic updates through easy-to-read LED displays
• +/- 2˚ F accuracy
• Adjustable high- and low-limit differential
• Outdoor reset functionality available with W8735S1000 and W8735Y1000
• Provides multi-zone control
• Thermowell horizontal or vertical and flush mounting
• EnviraCOM™ communications-enabled
• Compatible with W8735S3000 Alarm Module

MULTI-FUNCTION
L8124/L8148
TRIPLE AQUASTAT® RELAY

• Oil and gas versions
• High-limit or high-and-low-limit versions
• Mounts directly on boiler horizontally or vertically
• Provides multi-zone control
• Immersion-type controllers that combine high limit protection with
low limit and circulator control in forced hydronic heating systems
• The L8148 includes a transformer to provide power for the
low-voltage control circuit
• Gas versions include a transformer to provide power for the low
voltage circuit

SINGLE-FUNCTION
L6006/L4006
AQUASTAT® CONTROLLER

• Totally enclosed Micro Switch snap-acting switches operate on
temperature rise to set-point
• Visible control point scale and external adjustment screw permit
easy setting
• Horizontal or vertical insertion of sensing element
• Direct or well immersion of the sensing element
• SPST and SPDT switching action

SINGLE-FUNCTION
L6008/L4008
AQUASTAT® CONTROLLER

• Visible control point scale and external adjustment screw permit
easy setting
• Horizontal or vertical mounting of the remote element into boiler,
tank or other container
• Fast-responding remote temperature sensor
• SPDT or SPST switching action