Tekmar Universal Reset Control 374 – Two Mixing, Two Stage Boiler, DHW & Setpoint
$2,545.00
The Universal Reset Control 374 is designed to operate all of the mechanical equipment in a residential hydronic heating system. It can be used in applications ranging from a single zone of baseboard with an on/off boiler to multiple fan coils, low temperature staple up zones, low temperature in-slab radiant zones, domestic hot water, and 2 on/off boilers.
It regulates up to three space heating water temperatures through Outdoor Temperature Reset. It is capable of controlling up to 2 on/off boilers, up to 2 mixing devices (either variable speed pumps or floating action mixing valves), and Domestic Hot Water or setpoint loads
Features
- 2 X variable speed pump outputs or 2 X floating action mixing outputs
- 3 Outdoor Temperature Reset controlled water temperatures
- Advanced settings to fine-tune building requirements
- Automatic Boiler Differential
- Boiler Load Reset
- CSA C US certified (approved to applicable UL standards)
- Control up to 2 On/Off boilers
- DHW Priority (optional)
- DHW pump or valve operation
- Equal Run Time Rotation
- Exercising
- Outdoor Temperature Reset
- Powered boiler system and mixing system pump outputs
- Quick setup for easy installation
- Test sequence to ensure proper operation
- User comfort adjustment to increase or decrease building space temperature
- Warm Weather Shut Down
Technical
Specifications
| Control | Microprocessor control. This is not a safety (limit) control |
| Packaged weight | 3.5 lb. (1600 g) |
| Dimensions | 6-5/8″ H x 7-9/16″ W x 2-13/16″ D (170 x 193 x 72 mm) |
| Enclosure | Blue PVC plastic, NEMA type 1 |
| Approvals | CSA C US, meets Class B: ICES & FCC Part 15 |
| Ambient conditions | Indoor use only, 32 to 122°F (0 to 50°C), RH ≤90% Non-condensing, Altitude <6560 ft. (2000 m), Installation Category II, Pollution Degree 2 |
| Power supply | 115 V (ac) ±10%, 50/60 Hz, 1750 VA |
| Relays | 230 V (ac) 5 A, 1/3 hp, pilot duty 240 VA |
| Variable Pump | 230 V (ac) 2.4A 1/6 hp, fuse T2.5 A 250 V |
| Demands | 20 to 260 V (ac) 2 VA |
| Sensors | NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892 |
| -Included | Outdoor Sensor 070 and 3 of Universal Sensor 082 |
| Warranty | Limited 3 Year Warranty |
| Weight | 1.5 kg |
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