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.
10. Specifications:
Power and Electrical Ratings:
Power Supply: 120VAC ±10%, 60Hz, 20A
Zone Valve Output Rating:
24 Vac, 1A,
AUX(s) Pump Output Rating:
120 Vac, 1/6 HP
Boiler End Switch Contact Rating:
24 Vac, 1A,
Boiler Modulating Output Rating:
0-10 VDC Mode; 500 Ω min impedance
4-20 mA Mode; 1k
Ω max impedance?
Expansion Terminals:
Low voltage, 3-wire
polarity-sensitive, digital communications that
links other Switching Relays (SR-5), Zone Valve
Controls (ZVC-5) and other Modbus equipment.
Electrical Terminals (Line Voltage):
Wire Range Min / Max: 12-24AWG
Torque: 7.0 lbs-in. Max.
Electrical Terminals (Low Voltage):
Wire Range Min / Max: 12-28AWG
Torque: 3.5 lbs-in. Max.
Transformer Rating:
3 & 4 zone; 1 @ 40 VA, 24 Vac Class II
5 & 6 zone; 2 @ 40 VA, 24 Vac Class II
Environmental Ratings:
Ambient Temperature Rating:
32°F to 104°F (0°C to 40°C)
Operating Humidity Range (% RH):
5 to 90% RH, noncondensing
Sensor Temperature Rating:
-58°F to 230°F (-50°C to110°C)
DIP Switch Timing Settings:
Post Purge: 30 seconds; adjustable with
mobile app
Pump Exercise: 30 seconds per 2 weeks
of space heating inactivity; adjustable
with mobile app
Thermostat Compatibility: Compatible
with most mechanical, battery operated,
power-stealing (power-robbing),
hardwired and “Smart” thermostats.
Temperature Sensor: 10K ohm NTC
thermistor at 77°F (25°C) ± 0.5°F (±0.3°C).
Lead length: ?ft. (m); up to 500 ft. (150 m)
using 18 AWG or larger wire, beta=3892.
Dimensions (HxWxD): 15.6 x 8.7 x 2.7 in.
(39.5 x 22.0 x 6.8 cm) approximate
Weight: lb. (kg)
Approvals: UL, FCC, ISED
11. Accessories & Replacement Parts
Item Part Number
Strap-on sensor for boiler reset control or SmartPlus logic ------------------ 9300-2044RP
Outdoor sensor for outdoor boiler reset and smart pump exercise ------- 9300-2052RP
Circulator output fuses; slow blow, 6 amp, 2AG (5mm X 15mm) ----------- SR6A-001RP
Low voltage fuses; slow blow, ? amp, 2AG (5mm X 15mm) ------------------ ?
Transformer; 40 VA at 24 VAC with connectors to plug into board -------- 9300-4107RP
12. LIMITED WARRANTY STATEMENT
Taco, Inc. will repair or replace without charge