Tekmar 156 Application Brochure

8/8/2019 Tekmar 156 Application Brochure

http://slidepdf.com/reader/full/tekmar-156-application-brochure 1/4

1 of 4 © 2010 A 156 - 06/10

A 15606/10

- Application BrochureDifference Setpoint Control 156

Application A 156-1

System Description: The tekmar Difference Setpoint Control 156 operates the pump P1 whenever the temperature

difference between the collector and the storage tank is greater than the ΔT Setpoint. The control turns off the pump

if the temperature of the storage tank exceeds a maximum setting or if the temperature at the collector drops below aminimum setting.

Concept Drawing: This is only a concept drawing, not an engineered drawing. It is not intended to describe a complete system, nor any particular system. It is up to thesystem designer to determine the necessary components for and configuration of the particular system being designed, including additional equipment, isolation relays(for loads greater than the control’s specified output ratings), and any safety devices which in the judgement of the designer are appropriate, in order to properly size,configure and design that system and to ensure compliance with building and safety code requirements.

24 V (ac)

N

R

C

115 V (ac)

Class IITransformer

L

P1

S1

S2

5

Com

6

Src

7

Stor

No Power

156

1

R+

32RelayPower

C-

4

120 V (ac)

24 V (ac)

Class IITransformer

S1

P1

S2

156

S o l

a r

C

o l l

e c

t o r

Mechanical

P1 = On/Off Pump

S1 = Source Sensor 085S2 = Storage Sensor 071

ElectricalP1 = On/Off Pump






3 of 4 © 2010 A 156 - 06/10

Application A 156-3


difference between the collector and the storage tank is greater than the ΔT Setpoint. The control turns off the pumpif the temperature of the storage tank exceeds a maximum setting or if the temperature at the collector drops below a

minimum setting. When P1 turns off, the fluid in the collectors is drained back into the drainback tank. P1 must be sizedappropriately to overcome the system head at startup.


24 V (ac)

N

R

C

115 V (ac)

Class IITransformer

L

P1

S1

S2

5

Com

6

Src

7

Stor

No Power

156

1

R+

32RelayPower

C-

4

120 V (ac)

24 V (ac)

Class IITransformer

DrainbackWater Level

Outdoor

Indoor

DrainbackTank

Vent

OperationalWater Level

S1

S2

P1

156

S o l

a r

C

o l l

e c

t o r

Mechanical

P1 = On/Off Pump


ElectricalP1 = On/Off PumpS1 = Source Sensor 085

S2 = Storage Sensor 071



tekmar Control Systems Ltd., Canadatekmar Control Systems, Inc., U.S.A.Head Office: 5100 Silver Star RoadVernon, B.C. Canada V1B 3K4(250) 545-7749 Fax. (250) 545-0650Web Site: www.tekmarcontrols.com

Product design, software and literature are Copyright © 2010 by:tekmar Control Systems Ltd. and tekmar Control Systems, Inc. 4 of 4 All specifications are subject to change without notice.Printed in Canada. A 156 - 06/10.

Application A 156-4


difference between the collector and the pool is greater than the ΔT Setpoint. The control turns off the pump if thetemperature of the pool exceeds a maximum setting or if the temperature at the collector drops below a minimum setting.

The pool recirculation pump (P2) will operate continuously, or be operated by another control.


24 V (ac)

N

R

C

115 V (ac)

Class IITransformer

L

P1

S1

S2

5

Com

6

Src

7

Stor

No Power

156

1

R+

32RelayPower

C-

4

120 V (ac)

24 V (ac)

Class IITransformer

S1

P1S2

P2

156

S o l

a r

C

o l l

e c

t o r

Mechanical

P1 = On/Off PumpP2 = Pool Recirculation Pump

S1 = Source Sensor 085S2 = Pool Sensor 071

ElectricalP1 = On/Off Pump

S1 = Source Sensor 085S2 = Pool Sensor 071

Tekmar 156 Application Brochure

Documents