1
of
12
©
2010 D
156
-
06/10
D 156
06/10
- Data Brochure
Difference Setpoint Control 156
The Difference Setpoint Control 156 is designed to operate an on/off pump to transfer heat from a heat source to a storage
tank. The control operates based on a setpoint temperature difference (ΔT). The relay turns on when the ΔT rises above
the setpoint and turns off when the ΔT falls below the setpoint less the differential. The Source Minimum and Storage
Maximum settings turn off the relay when heat transfer is no longer desirable. Potential applications include using solar
collectors or a wood boiler as a heat source.
Additional functions include:
24 V (ac) OR 24 V (dc) power supply
Monitor Minimum & Maximum temperatures for Source & Storage
Displays number of running hours of the relay
Displays ΔT• hours to perform energy calculation
CSA and UL certified for use in the USA and Canada
NEW Solar Sensor 085 immersion type sensor included!
•
•
•
•
•
•
Difference Setpoint
Control 156
On / Off
Item
Dat
e Code
Power: 24 V (ac) ±10% 50/60 Hz 3 VA
24 V (dc) ±10% 0.03 A
Relay: 240 V (ac) 10 A 1/3 hp
tektra 906-12
Meets Class B:
Canadian ICES
FCC Part 15
ΔT
Source
Maximum
Minimum
Storage
ΔT • hours
Diff’l
1
2
3
4
C
R
5
Com
6
Src
7
Stor
No Power
Signal wiring must be
rated at least 300V
Made in Canada
Power
Relay
H30
10
B
Input
Universal Sensor
Included
Input
Solar Sensor
Included
Output
Primary
Pump
Input
24 V (ac or dc)
Power Supply
