Product Info
Literature

Overview

Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems, including domestic hot water service.

Features

Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems.
Provide multizone control by using a separate circulator and R845 Relay for each zone.
Include diaphragm powerhead and Micro Switch™ assembly that respond to temperature changes in boiler water.
Mount directly to boiler.
Select models include large transformers and extra terminals for supplying power to low voltage zone valves.
Require 24 Vac thermostat with heat anticipator set at 0.2 A (plus current draw of gas valve on L8124E).
TRADELINE models include tube of heat conductive compound and range stops.

Product Specifications

Hazmat Information: UN 1294, TOLUENE, 3, II
Application: Triple Aquastat Relay with High limit
Dimensions (in.): 4 3/8 in. high x 6 1/8 in. wide x 3 1/16 in. deep
Dimensions (mm): 111 mm high x 156 mm wide x 78 mm deep
Maximum Safe Operating Pressure (psi): 200 psi on outside of immersion well, 100 psi on capsule if inserted directly.
Maximum Safe Operating Pressure (kPa): 1378 kPa on outside of immersion well, 690 kPa on capsule if inserted directly.
Temperature Range (F): -30 F to 150 F at switches; 265 F at sensing element
Temperature Range (C): -34 C to 66 C at switches; 129 C at sensing element
Mounting: Horizontal
Frequency: 60 Hz
Electrical Connections: Quick-Connect / Screw
Operating Humidity Range (% RH): 0 to 95% RH, non-condensing
Voltage: 24 Vac; 120 Vac
Operating Temperature Range (F): High Limit-- 130 F to 240 F; Low Limit-- 110 F to 220 F
Operating Temperature Range (C): High Limit-- 54 C to 116 C; Low Limit-- 43 C to 104 C
Differential Temperature (F): High limit : 10 F fixed; low limit: 10-25 F adj.
Switching Action: SPST: High & Low Limit
Electrical Ratings, Burner: At Full Load-- Line Voltage: 7.4 A @ 120 Vac: 3.7 A @ 240 Vac; At Locked Rotor-- Line Voltage: 44.4 A @ 120 Vac: 22.7 A @ 240 Vac
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