Brochure

60 63-8702
Aquastat
®
Controllers
L8148 Aquastat Relay
Immersion-type controllers that combine high limit protection with
switching relay control of burner and circulator motors.
• High limit opens burner circuit only.
• Select models include transformer and accessory terminals for
adding a remote low limit controller.
• Case available for horizontal or vertical mounting.
• Requires a 24 Vac thermostat with heat anticipator set at 0.2A.
Application: High Limit
Voltage: 120 Vac
Frequency: 60 Hz
Temperature Range: Maximum – 150°F (66°C) with 1.2 A 24 V load;
77°F (25°C) with 1.4 A 24 V load
Capillary Length: 4 1/2 in. (114 mm)
Electrical Connections: Quick-Connect / Screw
Switching Action: SPST: High Limit & Circulator
Anticipator Setting: 0.2 A
Maximum Safe Operating Pressure (psi): Immersion Well: 255 psi
Maximum Safe Operating Pressure (kPa): Immersion Well: 1757 kPa
Electrical Ratings, Circulator:
At Full Load – 7.4 A @ 120 Vac: 3.7 A @ 240 Vac;
At Locked Rotor – 44.4 A @ 120 Vac: 22.2 A @ 240 Vac
Electrical Rating, Burner:
At Full Load – 7.4 A @ 120 Vac: 3.7 A @ 240 Vac;
At Locked Rotor – 44.4 A @ 120 Vac: 22.2 A @ 240 Vac
Low Voltage – 0.8 A maximum @ 24 Vac
Millivoltage – 0.25 A @ 1/4 to 12 Vdc
Operating Humidity Range (% RH): 0 to 95% RH, non-condensing
Approvals, Underwriters Laboratories Inc.: UL Listed: File No. MP466,
Vol. 13, Sec. 2, Guide No. MBPR2.
Approvals, CSA: L8148A, E - File No. 095329
L8148 J - File No. LR1620, Guide No. 400-E-O
Material Number Insulation Depth Operating Temperature Range Differential Temperature Mounting Includes
L8148A1017/U 1 1/2" to 3"
Insulation
High Limit – 140°F (60°C) to 240°F (116°C) 8°F fixed Horizontal Heat Conductive Compound
L8148E1265/U 1 1/2" to 3"
Insulation
High Limit – 180°F (82°C) to 240°F (116°C) 15°F fixed Vertical Mount Molex
®
plug for use with
vent damper, includes heat-
conductive compound.
L8148E1299/U 1 1/2" to 3"
Insulation
High Limit – 180°F (82°C) to 240°F (116°C) 15°F fixed Vertical Mount 50 VA transformer and heat
conductive compound.
Molex
®
plug for use with vent
damper
L8148J1009/U 1 1/2" to 3"
Insulation
High Limit – 120°F (54°C) to 240°F (116°C) 8°F fixed Horizontal or Vertical Heat Conductive Compound