|
|
 |
|
|
Tekmar DHW Control -Two Stage |
|
|
Click to enlarge |
|
Tekmar DHW Control -Two Stage
The DHW Control 257 is designed to operate multiple boilers for volume water heating. It can be used in hotels, apartments, and laundromats to control multiple boilers and provide quick recovery for domestic hot water. This control regulates a single hot water temperature through DHW control. It is capable of controlling up to 2 on/off boilers using a sensor to maintain a tank setpoint temperature.
Features
- 2 Stage control
- Cumulative boiler run time hours
- Equal Runtime Rotation
- Proportional or PID staging
Specifications
| Control |
Microprocessor control. This is not a safety (limit) control |
| Packaged weight |
0.8 lb. (360 g) |
| Dimensions |
4-3/4" H x 2-7/8" W x 7/8" D (120 x 74 x 22 mm) |
| Enclosure |
White PVC plastic, NEMA type 1 |
| Approvals |
CSA C US, meets class B: ICES & FCC Part 15 |
| Ambient conditions |
Indoor use only, -20 to 120°F (-30 to 50°C), RH ≤90% Non-condensing |
| Power supply |
24 V (ac) ±10%, 50/60 Hz, 3 VA |
| Relays |
240 V (ac) 10 A max, 1/3 hp |
| Sensors |
NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892 |
| -Included |
Outdoor Sensor 070, Universal Sensor 082 |
| -Optional |
tekmar type #: 071,078 |
| Warranty |
Limited 3 Year Warranty |
Current Literature
Product Submittal |
Jan 2012 - Present |
257_C |
Installation & Operation Manual |
Mar 2009 - Present |
257_D |
Application Brochure |
Mar 2009 - Current |
257_A |
RF Noise Interference |
May 2009 - Present |
SB0054_01 |
Part Number: 257
|
|
|
|
|
|
|
