Submittal Sheet

Job __________________________
Designer ______________________
Contact _______________________
www.tekmarcontrols.com  of 2 © 20 C 52 - 0/


0/
Setpoint Replaces: New

 -----------------------------------------------------
The Two Stage Setpoint Control 52 is designed to operate heating or cooling equipment in order to maintain a set temperature. It
can be used in applications ranging from heating a swimming pool with a 2 stage boiler to maintaining a hot water storage tank and
a cold water storage tank at the same time. This product regulates a constant water temperature for either 2 stage heating or  stage
heating and  stage cooling. It is capable of operating two relays to control either a single heat setpoint using one sensor, or a heat
setpoint and cool setpoint using the 2 sensor inputs.

N / A

Literature 52, A52, 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%, 0.03 A
Relays 240 V (ac) 0 A, /3 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 feet (50 m) of 8 AWG wire to
sensors
Temperature display
-85 to 302°F (-65 to 50°C)
Setpoint 1 & 2
-40 to 239°F (-40 to 5°C)
Differential 1 & 2
 to 40°F ( to 22°C)
Differential 1 & 2
3 to 40°F (2 to 22°)
Time delay 1 & 2
0 to 9 min. 50 sec..
Operating mode 1 & 2
Heating / Cooling
Temperature display
Fahrenheit / Celsius
Warranty Limited 3 Year (See D52 for full warranty)
 --------------------------
2 Stage operation or heat & cool control
Control of up to 2 different setpoints
(with additional sensor)
Pulse Width Modulation
Digital display
240V, 8A Relay
•
•
•
•
•
Front View
3 4
5 6 7 8 9
Signal wiring
must be rated
at least 300 V.
Two Stage Setpoint
Control 152
Setpoint Differential Delay
Item
2 Sensors
On
–––
Off
Power
Relay 1 Relay 2
Com
Sen
S1
Sen
S2
Sen
C– R+
1 2
Meets Class B:
Canadian ICES
FCC Part 15
Made in Canada
tektra 906-03
Date Code
H1095F
No power
Power: 24 V (ac) ± 10% 50/60 Hz 3 VA
24 V (dc) ± 10% 0.03A
Relay: 240 V (ac) 10 A 1/3 hp
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)
3 4
5 6 7 8 9
Signal wiring
must be rated
at least 300 V.
Two Stage Setpoint
Control 52
Setpoint Differential Delay
Item
2 Sensors
On
–––
O
Power
Relay 1 Relay 2
Com
Sen
S1
Sen
S2
Sen
C– R+
 2
Meets Class B:
Canadian ICES
FCC Part 15
Made in Canada
tektra 906-03
Date Code
H1095F
No power
Power: 24 V (ac) ± 10% 50/60 Hz 3 VA
24 V (dc) ± 10% 0.03A
Relay: 240 V (ac) 10 A 1/3 hp