Intergas Rapid 25 Installation Manual

Intergas Heating Ltd 47
9.2.7 No hot water (DHW)
Possible causes:
Solution:
Flow sensor not functioning.

DHW flow <
1.5
l/min.
Replace the flow sensor.
No

No voltage at the flow sensor (5V DC).

Check the
wiring according to the diagram.
No

Burner not firing on DHW: S3 faulty.

Replace S3.
No

Burner does not ignite.

See burner does not ignite.
9.2.8 Hot water does not reach temperature
Possible causes:
Solution:
DHW flow to high.

Adjust
the inlet assembly.
No

Temperature setting for water circuit too
low.

Set the hot water circuit, depending on the desired temperature.
No

No heat transfer as a result of lime scale or
fouling in the heat exchanger DHW side.

Descale or flush the exchanger DHW side.
No

Cold water temperature <10°C.
9.2.9 LED on CH pump is flashing alternately red and green.
Possible causes:
Solution:
Mains voltage to high or to low.

Check the mains.
No

Temperature of the pump is to high

Check the water and environment temperature.
9.2.10 LED on CH pump is flashing red.
Possible causes:
Solution:
Pump is not running

Reset the pump by shutting of the boiler (stand
-
by or powerless) for at least
20 seconds.
Note: If the pump is set on “continuously active” (parameter 2 = 1) the boiler
must be made powerless for at least 20 seconds.

Intergas Rapid 25 Specifications

General

Boiler Type	Combi
DHW Output	25 kW
Efficiency Rating	93%
Flow Rate	10.2 l/min
Mounting	Wall Mounted
ERP Efficiency	A
Max Gas Rate	2.78 m³/h
Dimensions (H x W x D)	590 x 450 x 240 mm