Taco ZVC404-EXP-4 Instruction Sheet

Also see for ZVC404-EXP-4: Instruction sheet

Taco ZVC404-EXP-4 Instruction Sheet Manual pdf 1 page image

1 2 3 4ZONE 11 2 3 4ZONE 21 2 3 4ZONE 31 2 3 4ZONE 4PRIORITYZONE2 WIREZONE VALVE(NO END SWITCH)MUST USE JUMPER TACO3 WIREZONE VALVE123JUMPER3 & 4MOTOR ENDSWITCH4 WIREZONE VALVE(POWER OPEN,SELF CLOSING)JUMPER3 & 4POWERCONTROLSZVC 404-EXP-4FOUR ZONE EXPANDABLEZONE VALVE CONTROL24 VACFACTORYINSTALLEDTRANSFORMER120 VACINPUTWHITEBLACKPOWER IN24 VAC24 VACFACTORYINSTALLEDTRANSFORMER120 VACINPUTWHITEBLACKN/O COM N/CPUMP ENDSWITCHZONE 4 PUMPEND SWITCHSLAVEPRIORITY ONRESETPOST PURGE ONPRIORITY PROTECTION ONPUMP EXERCISE ON30 SEC/2 WKMASTEROFFNORMALOFFOFFOFF4 MIN/24 HOURNOTE 3: When a circulator is usedon the priority zone instead of azone valve, jumper 3 and 4 ofthe priority zone.INDIRECTWATER HEATERAQUASTAT ORTHERMOSTATT STAT 1 VALVE 1T STAT 2 VALVE 2T STAT 3 VALVE 3T STAT 4 VALVE 4POWERLEDINDICATORSTO: "TT" ON BOILERTO: "TT" ON BOILER WITHDHW "TT" INPUTZONE 1 ZONE 2 ZONE 3 ZONE 4 NETEXPANSIONMAIN PRIORITYX X X X A B C R W C R W C R W C R W C 1 2END SWITCH THERMOSTATS (24 VAC) PRIORITY24 VAC ZONE VALVESACCESSORYPORTPRIORITYX XFUSE5 AMPFUSE5 AMPABPowered from Transformer A Powered from Transformer B120 VACINPUTDHWPUMPSYSTEM PUMP AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS.DHW PUMP TURNS ON ONLY WHEN PRIORITY ZONE CALLS.SECONDARY PUMP COMES ON WHEN ANY ZONE CALLS EXCEPT PRIORITY ZONE.SYSTEMPUMP SECONDARYPUMPHOTNEUTRALNHTHERMOSTATS(24 VAC) Powered fromTransformer A Powered fromTransformer BSee NOTE 1SeeNOTE 2NOTE 1: Terminals C are foroptional 24V thermostatCOMMON connections.NOTE 2: Resistor (1KΩ, 1⁄2 W)may be needed betweenW and C terminals.Operation/External Diagnostics: When any thermostat calls for heat,the appropriate zone valve is energized and the yellow light goes on.When the zone valve is fully open, the red light goes on and energizesthe end switch relay. The green light should always be on, indicatingthat power is connected.Priority Operation: When the priority dip switch is set to ON and thepriority zone is actuated, all other zones will stop operation until pri-ority zone is satisfied. When not switched to priority, all zones willoperate independently.Mode Operation: When the dip switch is set to NORMAL, the endswitch relay will be energized if any zone is in operation. When the switchis set to RESET, the end switch relay will only be energized if the priorityzone is in operation, or through the operation of a plug-in reset control.Post Purge Operation: When the dip switch is set to ON, the priori-ty zone output will stay energized for 2 minutes after its thermostat oraquastat is satisfied, but not operate the boiler.Priority Protection Operation: When the dip switch is set to ON, andif the priority zone calls continuously for more than one hour, poweris returned to all the other zones, allowing each zone to function inde-pendently. Once the priority zone is satisfied, the control's auto-reset isactivated and the priority zone is again allowed to have priority for upto one hour starting from when it calls next.Pump Exercise Operation: When the dip switch is set to ON, the solidstate timer cycles all the zone valves and circulating pumps that areattached to the Expandable Zone Valve Control at the selected timeinterval. The time interval can be set for the valves and pumps to runfor either 30 seconds every 2 weeks or for 4 minutes every 24 hours.End Switches (Dry Contacts): The main end switch closes when anyzone 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 RESETand a PC Series boiler reset power control is calling for heat. The priori-ty end switch closes only when the priority zone thermostat or aquastatis calling for heat.Expansion Connections: Set the expansion switch to MASTER on theswitching relay that has the designated priority zone or is utilizing thePC 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 con-trol(s). Controls may be daisy chained up to 20 zoning panels using anycombination 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 onthermostat.C Common side of transformer. Connect to COM onthermostat (optional).NET Network terminals 1 & 2 are tied together for wiring conveniencewhen using communicating style thermostats (optional).Power Input (120 vac):Connect neutral (white) leads on transformers to 120 volts acneutral power supply.Connect hot (black) leads on transformers to 120 volts achot power supply.Pump End Switch (Dry Contacts):Connect hot power supply to the right side of the pump end switchterminal on board.Connect hot input lead of the circulator to the left side of the pumpend switch terminal on board.Zone 4 Pump End Switches (Dry Contacts): See Diagram.N/O Normally open terminal of the priority zone relay.COM Common terminal of the priority zone relay.N/C Normally closed terminal of the priority zone relay.End Switch Pump Neutral Connections:Connect neutral power supply directly to neutral lead on circulator(s).WARNING: Wiring connections must be made in accordance with allapplicable electrical codes. Use copper wire only. 120 VAC wiring must havea minimum temperature rating of 75°C. Failure to follow this instructioncan result in personal injury or death and/or property damage. 12-18 gaugewire recommended for 120 VAC connections, 14-22 gauge wire for thermo-stat connections, and 14-22 gauge wire for 24 VAC source connections.Wiring Diagram:Instruction SheetZVC404-EXP-4 Zone Valve Control102-399SUPERSEDES: March 1, 2013 EFFECTIVE: December 20, 2013Plant ID# 9300-2880This 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 thatmay cause undesired operation.Specifications:PRODUCT NUMBER INPUT MAX 24 VAC TYPE 1 ENCLOSURENUMBER OF ZONES VOLTAGE OUTPUT @ 25°C WIDTH HEIGHT DEPTHZVC404-EXP-4 4 with Priority 120/60/1 VAC, 3A 24 VA per Zone 121⁄4" 8" 3"40 VA per TransformerThe pump end switches are rated 1⁄6 hp, 5 amps at 120 VAC. The main and priority end switch connectionsare rated 24 VAC, 1 amp. All thermostat and zone valve connections supply a 24 VAC class 2 output.

/ 2

Related manuals for Taco ZVC404-EXP-4