Cli-mate CLI-AP30 Especificaciones descargar pdf (Pagina 51)

e) Recommended Delta-t Settings for ON/OFF:

If the pump is shutting off prematurely, reduce the dTmin value.

If the pump is running for too long increase the dTmin value.

i) Direct Flow Systems

<20’ pipe run suggested setting: dTMax = 14

F (8

C) dTMin = 7

F (4

>20’ pipe run suggested setting: dTMax = 14

F (8

C) dTMin = 4

F (2

ii) Closed Loop System

<20’ pipe run suggested setting:

dTMax = 21

F (12

C) dTMin = 11

>20’ pipe run suggested setting:

dTMax = 21

F (12

C) dTMin = 7

f) Recommended Delta-t Settings for

Variable Speed:

The length of the pipe run is not such an

important consideration for variable speed

pump systems. During good sunny

conditions the pump will run continually

and the controller will modulate the flow

rate to maintain a suitable delta-t level.

Closed loop systems will require a slightly

high dTMax and dTMin, because the heat

exchanger requires a higher delta-t to

achieve good heat transfer. Setting the

dTMin to less than 7

F (4

C) could result in the pump running

continually because the potable side of the heat exchanger may only

ever get within 8°F of the solar loop and will therefore never be able to close the to the 7°F dTMin setting.

During poor solar conditions, if the pump is circulating continually, then the dTMin should be increased

slightly.

During sunny weather, if the pump regularly turns off, the dTMin should be reduced slightly.

i) Direct Flow Systems: Suggested setting: dTMax = 14

F (8

C) dTMin = 4

F (2

v) Closed Loop Systems: Suggested setting: dTMax = 20

F (12

C) dTMin = 5

F (4

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Cli-mate CLI-AP30 Especificaciones Pagina 51

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