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Description
Control Description: The Universal Reset Control 374 is a microprocessor-based control capable of providing a reset boiler supply temperature and two reset mixed supply temperatures based on outdoor air temperature. For mixing devices, the 374 can use either two variable speed injection pumps or two floating action mixing valves. The 374 is also capable of controlling an indirect Domestic Hot Water (DHW) tank and / or a setpoint load. The control is also capable of controlling up to two on / off boiler stages. Individual zone temperature control can be achieved by using a conventional thermostat system.

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 Differentia
  • Boiler Load Reset
  • 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
  • CSA C US certified (approved to applicable UL standards)
Read more
Manuals (2)
Specs
Application:
Universal Reset
Type:
Mixing Control
Boiler Control
Width (Inches):
7-9/16"
Height:
6-5/8"
Stages:
2 Boiler
2 Mixing
Voltage:
260v
Depth (Inches):
2-13/16"
Ambient Conditions:
Indoor Only: 32°-122°F < 90% RH non-condensing
Power Supply:
115V
Relays:
230 V (ac) 5 A-1/3 hp- pilot duty 240 VA
Min Temp (F):
35°F
Temperature Range (F):
35°F - 220°F
Max Temp (F):
220°F
Control:
Microprocessor Control
Weight (lbs):
3.5 lbs
Sensors:
NTC Thermistor 10 k ohm @ 77°F
Enclosure Type:
A
Demands:
20 to 260 V (ac) 2 VA
Variable Pump:
230 V (ac) 2.4A 1/6 hp - fuse T2.5 A 250 V
Includes:
(2) 071 Sensors
070 Sensor
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