Wiring Guide
Table Of Contents
- Thermostat Input (24 vac):
- Power Input (120 vac):
- Circulator Output; Secondary / AUX 1 (120 vac):
- Circulator Output; Primary / AUX 2 (120 vac):
- H Connect the Hot output to Hot power input on circulator.
- Circulator Output; Priority Zone / AUX 3 (120 vac):
- Zone naming
- Programmable output naming
- Alerts & messages
- Post purge time delay adjustment
- Pump exercise time delay adjustment
- Priority protection time delay adjustment
- Indoor boiler reset
- Outdoor boiler reset
- AUX 1 output behavior
- AUX 2 output behavior
- AUX 3 output behavior
- Cooling function
- Zone association
- For your convenience, the Taco Tech Support team is available anytime 24/7. Just call 401-942-8000 for help.
3.
Operation & Dip Switch Settings:
General Operation:
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 energizes
the boiler end switch relay and AUX circulator relay(s).
Expansion Connections:
Set dip switch (#1) to MASTER on the
switching
relay that is designated as the priority zone control. Set all other daisy
chained zone controls to EXPANSION.
Using thermostat wire (18-22 gauge)
connect between terminals 1, 2, 3 on the master control to the
corresponding 1, 2, 3 on the expansion
zone control(s). Zone controls may
be daisy chained up to 20 Taco zoning panels using
any combination of SR
and ZVC controls (120 zones if all are 6 zone panels).
Priority Operation:
When the priority dip switch (#2) is set to ON and the
priority zone (zone 1) is actuated, all other zones will stop operation until
priority zone is satisfied. When not switched to priority, all zones will
operate independently. More adjustments are available when using the
Taco eLink mobile app.
Priority Protection Operation:
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.
Primary Pump Operation:
When the dip switch (#3) is set to OFF, the AUX 2
circulating pump output will energize when any zone calls for heat,
except the
priority zone. When the dip switch is set to ON, the AUX 2 circulating pump
output will energize when any zone calls for heat.
Post Purge Operation:
When the dip switch (#4) 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.
More adjustments are available when using the Taco eLink mobile app.
Pump Exercise Operation:
When the dip switch (#5) is set to ON, the solid state timer cycles all the
zone valves and circulating pump outputs that are attached to the Zone Valve Control t o
run for 30 seconds every 2 weeks.
More adjustments are available when using the Taco eLink
mobile app.
Time Delay for Zone Valves without End Switches: When the dip switch (#6) is set to ON, they the
boiler end switch relay(s) and AUX 1, AUX 2 and AUX 3 circulating pump outputs are delayed operating
by 1 minute. When dip switch (#6) is set to OFF, then either zone valve with an end switch or jumper
between terminals 3 and 4 of zone output is required.
More adjustments are available when using
the Taco eLink mobile app.
AUX 1; Secondary Circulator Output: The AUX 1 output is energized when any zone calls for heat and
zone valve end switch is closed.
More adjustments are available when using the Taco eLink
mobile app.
AUX 2; Primary Circulator Output: The AUX 2 output follows dip switch setting # 3 listed above.
More
adjustments are available when using the Taco eLink mobile app.
AUX 3; Priority Zone Circulator Output: The AUX 3 output is energized when zone 1 calls for heat and
zone valve end switch is closed.
More adjustments are available when using the Taco eLink
mobile app.