Weishaupt WTC 60-A Operations Instructions download pdf (Page 55)

8.2 Sensor monitoring

8.3 Heating frost protection function

Boiler frost protection (without external sensor

QAC 31)

Tv < 8°C

➩ Burner on with minimum load

•Pump on

Tv > 8°C + switch differential flow

temperature (➩ P32)

➩ Burner off

• Pump run on (➩ P41)

☞ Frost protection also effective on output MFA,

if parametered as flow pump (➩ P13).

System frost protection (with external sensor

QAC 31)

A act.

< T

system frost protection

(➩ P23)

➩ Pump starts every 5 hrs.,

Switch on duration = pump run on time (➩ P41).

A act.

< T

system frost protection

– 5 K

➩ Pump continuous run on

A act.

> T

system frost protection

➩ Pump continuous run off

☞ Frost protection is also effective on outputs MFA and

VA with function heating circuit pump (➩ P13, P14).

☞ With calorifier regulation P1/P2 the system frost

protection has no effect on the boiler circuit pump

(internal or connected to MFA/VA).

DHW

< 8°C

➩ Frost protection heating on

DHW

> 8°C + switch differential DHW/2 (➩ P51)

➩ Frost protection heating off

With frost protection heating the boiler temperature is

regulated to 8°C + DHW temperature increase (➩ P50),

the Tap symbol flashes.

☞ Frost protection is also effective on outputs MFA

and VA with function DHW supply pump and

circulation pump.

8.4 DHW frost protection (version -W)

Display of sensor faults

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Weishaupt WTC 60-A Operations Instructions Page 55

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