SR501-HC-4 Datasheet - Taco

SR501-HC-4 Switching Relay

R W1 W2 C N H X1 X1 X2 X2 Hot side of transformer. Connect to R on thermostat. Switched R signal from thermostat #1. Connect to W on thermostat. Switched R signal from thermostat #2. Connect to W on thermostat. Common side of transformer. Connect to COM on thermostat (optional). Neutral wire of pow.

SR501-HC-4 Features

* External Indicator Lights Simplified Wiring Sealed Relays 100% Factory Tested Contractor Friendly PC Board Layout Universal Thermostat Compatibility UL Approved Extended 3 Year Warranty 120 VAC Application: 1 zone switching relay with boiler enable or 2 zone without boiler enable. 240 VAC Applicati

SR501-HC-4-Taco.pdf