Siemens Albatros2 AVS37 User Manual download pdf (Page 121)

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Siemens Schweiz AG User Manual CE1U2354en

HVAC Products Configuration 23. August 2007

Heat gen shutoff valve Y4

If the buffer storage tank holds a sufficient amount of heat, the consumers can draw

their heat from it, and the heat sources need not be put into operation.

Automatic heat generation lock locks the heat sources and hydraulically disconnects

them from the rest of the plant with the help of heat source shutoff valve Y4.

This means that the heat consumers draw their energy from the buffer storage tank and

wrong circulation through the heat sources will be eliminated.

Solid fuel boiler pump Q10

For the connection of a solid fuel boiler, a circulating pump for the boiler circuit is

required.

Time program 5 K13

The relay is controlled according to the settings made in time program 5.

Buffer return valve Y15

This valve must be configured for return temperature increase / decrease or partial

charging of the buffer storage tank.

Solar pump ext exch K9

For the external heat exchanger, solar pump “Ext heat exchanger K9“ must be set at

the multifunctional relay output (QX).

If both a DHW and a buffer storage tank are available, operating line 5841 “External

solar heat exchanger“ must also be set.

Solar ctrl elem buffer K8

If several heat exchangers are used, the buffer storage tank must be set at the

respective relay output and, in addition, the type of solar controlling element must be

defined on operating line 5840).

Solar ctrl elem swi pool K18

If several heat exchangers are used, the swimming pool must be set at the respective

relay output and, in addition, the type of solar controlling element must be defined on

operating line 5840).

Collector pump 2 Q16

When using a second solar collector, a separate circulating pump for this collector

circuit is required.

H3 pump Q19

Pump H2 can be used for an additional consumer. Together with an external demand

for heat at input H2, it is possible to serve an air heater or similar.

Flue gas relay K17

If the flue gas temperature exceeds the level set on operating line 7053 "Flue gas

temperature limit", relay K17 closes.

Assisted firing fan K30

This setting has no function.

Cascade pump Q25

Common boiler pump for all boilers in a cascade.

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