SR 501-EXP-4. POWER Operation: When the thermostat calls for heat, the circulating pump is energized . ed in conformity with Taco instructions or which.Buy Taco SR506-EXP-4 Today. Free Shipping. Check the Taco Zone Switching Relay - Six Zones - Expandable ratings before checking out. Operation: When any thermostat calls for heat, the boiler will be enabled SR 506-EXP-4. FUSE. 6 AMP . ed in conformity with Taco instructions or which. Taco SR506-EXP Manuals. Manuals and User Guides for Taco SR506-EXP. We have 1 Taco SR506-EXP manual available for free PDF download: Wiring Taco SR506-EXP-4 - 6 Zone Switching Relay w/ Priority - Taco Switching Relays combine clearly labeled PowerPort Cards and Add-on Power Controls, Taco -EXP controls allow for simple integration of advanced features. Manuals (3). SR506-EXP. 6 Zone Switching Relay with Priority and 3 PowerPorts. Zone Valve Controls. Product No. Description. ZVC403. 3 Zone Valve Control. ZVC404. 4 The Taco Switching Relay is the best choice for all your zoning needs, with INPUT. SR 504-EXP. ZONE 2. POWER. ZONE 1. ZONE 3. ZONE 4. JUMPER SR504. 4 with Priority. 120 VAC Input. 20 amps. 10 1/4” 6 3/4” 2 3/4”. SR506. Zone Valve Controls – NON EXP Connected Together with Priority. 29 – 34 4 Zone Switching Relay with Priority. SR506. 6 Zone Switching Relay with Priority instructions must be followed so power originates from the boiler aquastat. ZONE 2. 2 WIRE ZONE VALVE. (NO END SWITCH). JUMPER. 3 & 4. TACO. 1 Dec 1999 SR 506-EXP. ZONE 2. POWER. ZONE 1. ZONE 3. ZONE 4. ZONE 5 made in accordance with all applicable electrical codes and these instructions. TACO, INC., 1160 Cranston Street, Cranston, RI 02920 Telephone: (401) 27 Nov 2014 The All New . . . TACO ZONE CONTROLS WIRING GUIDE Zone Valve Controls – NON EXP Connected Together with Priority. 28 – 32 SR504-4. 4 Zone Switching Relay with Priority. SR506-4. 6 Zone Switching Relay with Priority Manual. Operation. Switch. X - Pump Block, Single Zone. Input from.