Submittal Sheet

Job __________________________
Designer ______________________
Contact _______________________
www.tekmarcontrols.com  of 2 © 20 C 50 - 0/
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0/
Setpoint Replaces: New
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The One Stage Setpoint Control 50 is designed to operate a single component of a heating or cooling system in order to maintain a
set temperature. It can be used in applications ranging from heating a swimming pool to maintaining a constant slab temperature in
a commercial car wash bay. This control regulates a constant setpoint water temperature for heating or cooling. The 50 is designed
to operate a single relay (rated at 240 V, 8 A) to control a single device such as a boiler, pump, or valve.
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N / A

Literature D50, A50, D00, D070
Control Microprocessor control. This is not a safety (limit) control
Packaged weight .0 lb. (450 g)
Dimensions 4-3/4” H x 2-7/8” W x 7/8” D (20 x 74 x 22 mm)
Enclosure White PVC plastic, NEMA type 
Approvals CSA C US, meets class B: ICES & FCC Part 5
Ambient conditions
Indoor use only, -20 to 20°F (-30 to 50°C), RH ≤90% Non-
condensing
Power supply 24 V (ac) ±0%, 50/60 Hz, .3 VA, 24 V (dc) ±0%, 0.02 A
Relay 240 V (ac) 8 A max, /4 hp
Sensors NTC thermistor, 0 kΩ @ 77°F (25°C ±0.2°C) ß=3892
–Included Universal Sensor 07
–Optional tekmar type #: 070, 07, 072, 073, 076, 077, 078, 079, 082, 083, 084
Programmed settings
Ten year memory backup
Control accuracy
±0.5°F (±0.3°C) with up to 500 ft. (50 m) of 8 AWG wire to sensors
Temperature display
-85 to 302°F (-65 to 50°C)
Setpoint operation
-40 to 239°F (-40 to 5°C)
Differential (Bang/Bang)
 to 40°F ( to 22°C)
Differential (PWM)
3 to 40°F (2 to 22°)
Time delay (Bang/Bang)
0 to 9 min. 50 sec.
Cycle length (PWM)
30 sec. to 9 min. 50 sec.
Operating mode
Heating / Cooling
Temperature display
Fahrenheit / Celsius
Warranty Limited 3 Year (See D50 for full warranty)
Front View
PRGM
HEAT COOL
F C
Item
2–7/8”
(74 mm)
4–3/4”
(120 mm)
Side View
7/8”
(22 mm)
Cover O
Item
1–3/8”
(37 mm)
6/8”
(18 mm)
6/8”
(18 mm)
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Heat or Cool Setpoint Control
Pulse Width Modulation Control
Digital display
Normally open AND normally closed relay
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PRGM
HEAT COOL
F C
Item