DHW Control - Two Stage Zoom

DHW Control - Two Stage

SKU:257

Brand: Tekmar

Tekmar
Qty Price
$195.95
/ each
In Stock! Ships in 1-3 Days
2 Available

Specs

Application: Two Stage
Width: 2-7/8"
Height: 4-3/4"
Stages:
?
2 Boiler
1 Two-Stage Boiler
User Interface: LCD
Push Button
Voltage:
?
24v
Type: DHW
Depth (Inches): 7/8"
Ambient Conditions: Indoor Only: 32°-122°F < 90% RH non-condensing
Power Supply: 24V
Relays: 240 V (ac) 10 A-1/3 hp- pilot duty 240 VA
Temperature Range (F): -60°-255°F
Min Temp (F): -60°F
Max Temp (F): 255°F
Control: Microprocessor Control
Weight (lbs): .7 lbs
Sensors: NTC Thermistor
10 k ohm @ 77°F
Enclosure Type: C

Description for Tekmar 257

Control Description The DHW Control 257 is used for dedicated domestic hot water systems. The control operates two on/off boilers, or one two-stage boiler to maintain the DHW Target temperature at the DHW Sensor. The control can operate in Proportional (P) mode, or Proportional, Integral, Derivative (PID) mode using solar collectors or a wood boiler as a heat source.
 















































Literature


—

Control


—
Microprocessor control; This is not a safety (limit) control

Packaged Weight


—
0.78 lb. (355 g)
 
—
Enclosure C, White PVC plastic

Dimensions


—
4-3/4" H x 2-7/8" W x 7/8" D (120 x 74 x 22 mm)

Approvals


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CSA certified to CSA C22.2 #24 and UL # 508

Ambient Conditions


—
Indoor use only, 32 to 122°F (0 to 50°C), < 90% RH non-condensing

Power Supply


—
24 V ±10% 50/60 Hz 2 VA

Relay


—
240 V (ac) 10 A 1/3 hp, pilot duty 240 VA

Sensors Included


—
NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892 One Universal Sensor 071

Optional


—
tekmar type #078,082

DHW Control - Two Stage

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