Switching Relays. Product No. Description. SR501-4. 1 Zone Switching Relay. SR501-HC-4. 1 or 2 Zone Switching Relay, High Current Capacity. SR501-OR-4.
ZVC404-EXP Zone Valve Control Connected to a MOD–CON Boiler ... 2 WIRE. ZONE VALVE. (NO END SWITCH). MUST USE JUMPER. TACO. 3 WIRE. ZONE VALVE.
TACO Zone Control Product Information Switching Relays Product No. SR501-4 SR501-HC-4 SR501-OR-4 SR502-4 SR503-4 SR504-4 SR506-4 Description 1 Zone Switching Relay 1 or 2 Zone Switching Relay, High Current Capacity 1 Zone Switching Relay with Outdoor Reset 2 Zone Switching Relay with Priority 3 Zone Switching Relay with Priority 4 Zone Switching Relay with Priority 6 Zone Switching Relay with Priority Expandable Switching Relays Expandable to 120 Zones (20 Zoning Panels) Product No. Description SR501-EXP-4 1 Zone Switching Relay SR503-EXP-4 3 Zone Switching Relay with Priority SR504-EXP-4 4 Zone Switching Relay with Priority SR506-EXP-4 6 Zone Switching Relay with Priority Zone Valve Controls Product No. ZVC403-4 ZVC404-4 ZVC405-4 ZVC406-4 Description 3 Zone Valve Control with Priority 4 Zone Valve Control with Priority 5 Zone Valve Control with Priority 6 Zone Valve Control with Priority Expandable Zone Valve Controls Expandable to 120 Zones (20 Zoning Panels) Product No. Description ZVC404-EXP-4 4 Zone Valve Control with Priority ZVC406-EXP-4 6 Zone Valve Control with Priority Add-On Power Controls (For use with all -EXP controls) Product No. Description PC700 Boiler Reset Control PC702 2-Stage Boiler Reset Control PC705 Variable Speed Pump Injection Mixing Control Fan Controls Product No. HAFC201-4 Description Hydro Air Fan Control with Optional Time Delays Do it once. Do it right. SR504-EXP Switching Relay Connected to a MODCON Boiler MOD-CON BOILER SPACE HEATING PUMP OUTPUT DHW DEMAND SPACE HEATER DEMAND DHW PUMP OUTPUT (NOT USED) POWER CONTROLS SLAVE PRIORITY ON RESET PRIMARY PUMP ON POST PURGE ON PRIORITY PROTECT ON PUMP EXERCISE ON 30 SEC/2 WK LOW LIMIT (ZC) ON SR 504-EXP-4 THERMOSTATS INDIRECT WATER HEATER AQUASTAT OR THERMOSTAT NOTE 1: Terminals C are for optional 24V thermostat COMMON connections. MASTER OFF NORMAL OFF OFF OFF OFF 4 MIN/24 HOUR OFF X X X X A B C R WC R WC R WC MAIN PRIORITY EXPANSION ZONE 1 ZONE 2 ZONE 3 END SWITCH THERMOSTATS (24 VAC) ACCESSORY PORT FOUR ZONE EXPANDABLE SWITCHING RELAY R WC 1 2 ZONE 4 NET PRIORITY LED INDICATORS POWER ZONE 1 FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP ZONE 2 ZONE 3 ZONE 4 120 VAC 120 VAC CIRCULATORS PRIORITY N/C INPUT ZC ZR PRIMARY ZONE1 ZONE2 ZONE3 ZONE4 ZONE4 120 VAC H H N H N H NH NH NH NH N H PRIMARY SYSTEM CIRCULATOR (OPTIONAL) H 120 VAC INPUT N ZVC404-EXP Zone Valve Control Connected to a MODCON Boiler SPACE HEATING PUMP OUTPUT MOD-CON BOILER WHITE 120 VAC INPUT BLACK WHITE 120 VAC INPUT BLACK NH 120 VAC INPUT 50 FACTORY INSTALLED TRANSFORMER FACTORY INSTALLED TRANSFORMER DHW DEMAND Powered from Transformer A Powered from Transformer B SPACE HEATER DEMAND DHW PUMP OUTPUT (NOT USED) THERMOSTATS (24 VAC) INDIRECT WATER HEATER AQUASTAT OR THERMOSTAT NOTE 1: Terminals C are for optional 24V thermostat COMMON connections. A 24 VAC B 24 VAC POWER IN 24 VAC FUSE 5 AMP FUSE 5 AMP POWER CONTROLS X X X X A B C R WC R WC R WC R WC 1 2 MAIN PRIORITY EXPANSION ZONE 1 ZONE 2 ZONE 3 ZONE 4 NET END SWITCH THERMOSTATS (24 VAC) PRIORITY LED ACCESSORY PORT SLAVE PRIORITY ON RESET ZVC 404-EXP-4 INDICATORS MASTER OFF FOUR ZONE EXPANDABLE POWER NORMAL ZONE VALVE CONTROL T STAT 1 VALVE 1 POST PURGE ON OFF PRIORITY PROTECTION ON OFF T STAT 2 VALVE 2 PUMP EXERCISE ON 30 SEC/2 WK OFF 4 MIN/24 HOUR T STAT 3 VALVE 3 T STAT 4 VALVE 4 PUMP END SWITCH ZONE 4 PUMP END SWITCH X X N/O COM N/C 24 VAC ZONE VALVES PRIORITY ZONE 1 ZONE 2 ZONE 3 ZONE 4 1234 1234 1234 1234 DRY CONTACTS SPACE HEATING PUMP 2 WIRE ZONE VALVE (NO END SWITCH) MUST USE JUMPER JUMPER 3 & 4 MOTOR END 1 SWITCH 2 3 TACO 3 WIRE ZONE VALVE 4 WIRE ZONE VALVE (POWER OPEN, SELF CLOSING) JUMPER 3 & 4 PRIORITY ZONE SEE NOTE 2 NOTE 2: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. Powered from Transformer A Powered from Transformer B TEKMAR Communication Thermostat (TN4) Connected to SR504-EXP Switching Relay BOILER TO: "TT" ON BOILER TO: "TT" ON BOILER WITH DHW "TT" INPUT R W C tn4 R W C tn4 R W C tn4 R W C tn4 POWER CONTROLS SLAVE PRIORITY ON RESET PRIMARY PUMP ON POST PURGE ON PRIORITY PROTECT ON PUMP EXERCISE ON 30 SEC/2 WK LOW LIMIT (ZC) ON SR 504-EXP-4 MASTER OFF NORMAL OFF OFF OFF OFF 4 MIN/24 HOUR OFF X X X X A B C R WC R WC R WC MAIN PRIORITY EXPANSION ZONE 1 ZONE 2 ZONE 3 END SWITCH THERMOSTATS (24 VAC) ACCESSORY PORT FOUR ZONE EXPANDABLE SWITCHING RELAY R WC 1 2 ZONE 4 NET PRIORITY LED INDICATORS POWER ZONE 1 FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP ZONE 2 ZONE 3 ZONE 4 120 VAC 120 VAC CIRCULATORS PRIORITY N/C INPUT ZC ZR PRIMARY ZONE1 ZONE2 ZONE3 ZONE4 ZONE4 120 VAC H H N H N H NH NH NH NH N H PRIMARY CIRCULATOR (OPTIONAL) H 120 VAC N INPUT tn4 C R TEKMAR USER SWITCH (OPTIONAL) 51 Instruction Sheet SR503-EXP, SR504-EXP & SR506-EXP Switching Relay Operation: When any thermostat calls for heat, the appropriate circulating pump is energized and the isolated end switch (X and X) will start the boiler. Priority Operation: When the priority dip switch is set to ON and the priority zone is actuated, all other zones will stop operation until priority zone is satisfied. When not switched to priority, all zones will operate independently. Mode Operation: When the dip switch is set to NORMAL, the end switch relay will be energized if any zone is in operation. When the switch is set to RESET, the end switch relay will only be energized if the priority zone is in operation, or through the operation of a plug-in reset control. Primary Pump Operation: When the dip switch is set to OFF, the primary circulating pump output will energize when any zone calls for heat, except the priority zone. When the dip switch is set to ON, the primary circulating pump output will energize when any zone calls for heat. Post Purge Operation: When the dip switch is set to ON, the priority zone output will stay energized for 2 minutes after its thermostat or aquastat is satisfied, but not operate the boiler. Priority Protection Operation: When the dip switch is set to ON, and if the priority zone calls continuously for more than one hour, power is returned to all the other zones, allowing each zone to function independently. Once the priority zone is satisfied, the control's auto-reset is activated and the priority zone is again allowed to have priority for up to one hour starting from when it calls next. Pump Exercise Operation: When the dip switch is set to ON, the solid state timer cycles all the circulating pumps that are attached to the Expandable Switching Relay at the selected time interval. The time interval can be set for the pumps to run for either 30 seconds every 2 weeks or for 4 minutes every 24 hours. Low Limit (ZC) Operation: When the dip switch is set to ON and the boiler drops below the set low limit (terminal ZC connected to boiler), all zone circulating pumps will stop. When the boiler rises above the set low limit, the zone circulating pumps are allowed to operate. End Switches (Dry Contacts): The main end switch closes when any zone thermostat calls for heat and the mode switch is set to NORMAL. The main end switch also closes when the mode switch is set to RESET and a PC Series boiler reset power control is calling for heat. The priority end switch closes only when the priority zone thermostat or aquastat is calling for heat. Expansion Connections: Set the expansion switch to MASTER on the switching relay that has the designated priority zone or is utilizing the PC Series plug-in option. Set all other daisy chained controls to SLAVE. Using thermostat wire (18-22 gauge) connect between terminals A, B, C on the master control to the corresponding A, B, C on the SLAVE control(s). Controls may be daisy chained up to 20 zoning panels using any combination of -EXP controls (120 zones if all are 6 zone panels). Thermostat Input (24 vac): R Hot side of transformer. Connect to R on thermostat. W Switched R signal from thermostat. Connect to W on thermostat. C Common side of transformer. Connect to COM on thermostat (optional). NET Network terminals 1 & 2 are tied together for wiring convenience when using communicating style thermostats (optional). 120 VAC Connections (N is Neutral, H is Hot): Power Input Primary Zone 1-5 Priority Zone 6 N/C Zone 6 Connect 120 Volt AC power Primary Pump (optional) Circulator Zones Priority Zone (if enabled) or Zone 6 Normally closed terminals for the Priority Zone. WIll deactivate on a Priority Zone call. Cold Start Boiler Application TO: "TT" ON BOILER TO: "TT" ON BOILER WITH DHW "TT" INPUT THERMOSTATS POWER CONTROLS SLAVE PRIORITY ON RESET PRIMARY PUMP ON POST PURGE ON PRIORITY PROTECT ON PUMP EXERCISE ON 30 SEC/2 WK LOW LIMIT (ZC) ON MASTER OFF NORMAL X X X X A B C R W C R W C R W C R W C R W C R W C 1 2 OFF MAIN PRIORITY EXPANSION ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 NET OFF END SWITCH THERMOSTATS (24 VAC) PRIORITY OFF OFF 4 MIN/24 HOUR OFF ACCESSORY PORT SIX ZONE EXPANDABLE SWITCHING RELAY LED INDICATORS POWER ZONE 1 FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP FUSE 6 AMP ZONE 2 ZONE 3 ZONE 4 120 VAC 120 VAC CIRCULATORS PRIORITY N/C INPUT ZC ZR PRIMARY ZONE1 ZONE2 ZONE3 ZONE4 ZONE5 ZONE6 ZONE6 120 VAC H H N H N H NH NH NH NH NH NH N H ZONE 5 ZONE 6 SR 506-EXP-4 PRIMARY CIRCULATOR (OPTIONAL) Dip Switch Settings: SLAVE ZONE PRIORITY ON RESET PRIMARY PUMP FUNCTION ON POST PURGE ON PRIORITY PROTECTION ON PUMP EXERCISE ON 30 SEC/2 WK LOW LIMIT (ZC) ON 120 VAC INPUT MASTER OFF NORMAL OFF OFF OFF OFF 4 MIN/24 HOUR OFF External Diagnostics: Externally visible lights show full functionality of the switching relay. The green light should always be on, indicating that power is connected. When the thermostat calls for heat, both the appropriate circulator and red indicating light are energized. For more wiring diagrams, visit www.taco-hvac.com. Specifications: PRODUCT NUMBER NUMBER OF ZONES INPUT VOLTAGE MAXIMUM COMBINED LOAD TYPE 1 ENCLOSURE WIDTH HEIGHT DEPTH SR506-EXP-4 6 with Priority 120/60/1 VAC 20 amps 121/4" 8" 3" All circulator relay connections, including ZC/ZR, are rated 1/3 hp (6 FLA, 36 LRA) at 120 VAC. End switch connections are rated 24 VAC, 1 amp. All thermostat connections supply a 24 VAC class 2 output. Features: Front External Indicator Lights Ideal for Retrofitting Primary Circulator Output Simplified Wiring Plug-In Power Controls Sealed Relays Compact Design Fuse Protected 100% Factory Tested Two Isolated End Switches Expandable to 20 Zoning Panels (120 zones if all are 6 zone panels) Contractor Friendly PC Board Layout Universal Thermostat Compatibility UL Approved 24 volt Power Input or Output Terminal Extended 3 Year Warranty Made in the USA WARNING: Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only. 120 VAC wiring must have a minimum temperature rating of 75°C. Failure to follow this instruction can result in personal injury or death and/or property damage. 12-18 gauge wire recommended for 120 VAC connections, 14-22 gauge wire for thermostat connections, and 14-22 gauge wire for 24 VAC source connections. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Do it Once. Do it Right.® TACO, INC., 1160 Cranston Street, Cranston, RI 02920 Telephone: (401) 942-8000 FAX: (401) 942-2360. TACO (Canada), Ltd., 8450 Lawson Road, Unit #3, Milton, Ontario L9T 0J8. Telephone: 905/564-9422. FAX: 905/564-9436. Visit our web site at: http://www.taco-hvac.com Printed in USA Copyright 2010 TACO, Inc. 99 104 TACO Zone Controls Cross-Reference TACO ARGO SWITCHING RELAYS 1 Zone Switching Relay (DPDT) 1 Zone Switching Relay 1 Zone Switching Relay with Outdoor Reset 2 Zone Switching Relay with Priority 3 Zone Switching Relay with Priority 4 Zone Switching Relay with Priority 6 Zone Switching Relay with Priority EXPANDABLE SWITCHING RELAYS 1 Zone Switching Relay with Priority 3 Zone Switching Relay with Priority 4 Zone Switching Relay with Priority 6 Zone Switching Relay with Priority ZONE VALVE CONTROLS 3 Zone Valve Control with Priority 4 Zone Valve Control with Priority 5 Zone Valve Control with Priority 6 Zone Valve Control with Priority EXPANDABLE ZONE VALVE CONTROLS 4 Zone Valve Control with Priority 6 Zone Valve Control with Priority SR501 SR501-HC SR501-OR SR502 SR503 SR504 SR506 AR822II AR-861-2II (3) AR-861-3II (3) SR501-EXP SR503-EXP SR504-EXP SR506-EXP ARM-3P (5,6) ARM-4P (5,6) ARM-6P (5,6) ZVC403 (7) ZVC404 (7) ZVC405 (7) ZVC406 (7) AZ-3 AZ-4P AZ-5 AZ-6P ZVC404-EXP ZVC406-EXP ERIE HONEYWELL SR100 SR201 SR301 SR601 R601 (4) RA89A (2), RA845A (1), RA832A (1), R8845U, RA889A AQ25042B (9) VL500 (8) VL500 (8) AQ25044B (9) TACO Zone Control Product Information Switching Relays Product No. SR501-4 SR501-HC-4 SR501-OR-4 SR502-4 SR503-4 SR504-4 SR506-4 Description 1 Zone Switching Relay 1 or 2 Zone Switching Relay, High Current Capacity 1 Zone Switching Relay with Outdoor Reset 2 Zone Switching Relay with Priority 3 Zone Switching Relay with Priority 4 Zone Switching Relay with Priority 6 Zone Switching Relay with Priority Expandable Switching Relays Expandable to 120 Zones (20 Zoning Panels) Product No. Description SR501-EXP-4 1 Zone Switching Relay SR503-EXP-4 3 Zone Switching Relay with Priority SR504-EXP-4 4 Zone Switching Relay with Priority SR506-EXP-4 6 Zone Switching Relay with Priority Zone Valve Controls Product No. ZVC403-4 ZVC404-4 ZVC405-4 ZVC406-4 Description 3 Zone Valve Control with Priority 4 Zone Valve Control with Priority 5 Zone Valve Control with Priority 6 Zone Valve Control with Priority Expandable Zone Valve Controls Expandable to 120 Zones (20 Zoning Panels) Product No. Description ZVC404-EXP-4 4 Zone Valve Control with Priority ZVC406-EXP-4 6 Zone Valve Control with Priority Add-On Power Controls (For use with all -EXP controls) Product No. Description PC700 Boiler Reset Control PC702 2-Stage Boiler Reset Control PC705 Variable Speed Pump Injection Mixing Control Fan Controls Product No. HAFC201-4 Description Hydro Air Fan Control with Optional Time Delays CONTROLS MADE EASY.® TACO, INC., 1160 Cranston Street, Cranston, RI 02920 Telephone: (401) 942-8000 FAX: (401) 942-2360. TACO (Canada), Ltd., 8450 Lawson Road, Unit #3, Milton, Ontario L9T 0J8. Telephone: 905/564-9422. FAX: 905/564-9436. Visit our web site at: http://www.taco-hvac.com Printed in USA Copyright 2013 TACO, Inc.QuarkXPress(R) 8.51 QuarkXPress(R) 8.51