L7224A,C; L7248A,C,L
Oil Electronic
Aquastat® Controllers
INSTALLATION INSTRUCTIONS
APPLICATION
The L7224A,C and L7248A,C,L 2012 Compliant Oil Electronic Aquastat® Controllers provide electronic temperature sensing in a UL
The L7224A,C and L7248A,C,L replace the L8124A, L8124C, L7124A,C, L7148A and L8148A Controllers. The L7224A,C and L7248A,C,L series controls provide status and diagnostic information through an LED display combined with LED lights as well as EnviraCOM™ communications enabled thermostats and diagnostic tools to enhance the diagnostic process.
L7224/L7248 Aquastat Controllers are intended for use in
IMPORTANT
Use of Outdoor Temperature Reset on a tank- less coil application requiring a Low Limit setting will result in reduced system effectiveness and efficiency.
SPECIFICATIONS
Electrical Ratings: Voltage: 120 Vac, 60 Hz.
Power: 7 VA maximum at 120 Vac plus external loads.
Thermostat current: 100 mA nominal at 24 Vac. Burner Relay:
7.4A at 120 Vac Full Load Amperage (FLA);
44.4A inrush Locked Rotor Amperage (LRA); Less Ignition Load: 360 VA.
Circulator Relay:
7.4A at 120 Vac FLA; 44.4 A inrush LRA. Zone Controller (ZC): 7.4 A at 120 Vac FLA;
44.4A inrush LRA.
NOTE: All loads combined cannot exceed 2000 VA.
Environmental Ratings:
Temperature:
Humidity: 0 to 95% relative humidity, noncondensing.
Approvals:
Underwriters Laboratories Inc. Component Recognized.
Canadian Underwriters Laboratories Inc. Component
Recognized.
2012 DOE Compliance and Operation
Operation of this control may delay the burner operation while the residual heat is circulated out of the boiler.
NOTE: This operation may be different than earlier electronic Aquastat® revisions which did not implement thermal purge.