Thermann TIHP 300, Operation And Installation Instructions Manual

 INSTALLATION INSTRUCTIONS 

5

heat pump operatIon

This is the standard operating mode, to which the limits of scope of the heat pump apply (see:

Specification).

To heat 

up the cylinder capacity of approx.

300 litres of water in accordance with EN 255 part 3 to 60 °C, the device requires:

τ

Heat-up

ϑ

Room

F

rel

ϑ

Cold water

COP (t)

10.1 h

15 °C

70 %

15 °C

3.19

5 h

42 °C

70 %

15 °C

5.61

note

If the heat pump is switched OFF and ON again, for instance after a power failure, the compressor will only 

re-start (after approx.

3 minutes), when the pressure inside the refrigerant circuit has normalised again.

operatIon WIth actIve DefroSt feature 

note

The heat pump must not be installed in areas where ambient temperatures frequently exceed 42 °C or areas 

where temperatures frequently drop below 0 °C.

Subject to the relative humidity and the DHW temperature, the evaporator begins to build up hoar frost at an am-

bient temperature of below 6 °C.
If the evaporator is covered in hoar frost, the frost monitor N2 (see wiring diagram) switches the fan OFF, whilst the 

compressor continues to run, and the changeover valve V2 routes the hot gas directly to the evaporator.

For this, the 

condenser is shut off by changeover valve V1 (see Fig.

4).

When the temperature at the evaporator fins rises above 

3 °C, the fan is started again, and DHW heating continues.
The DHW heat pump can be operated at ambient temperatures as low as 0 °C.

The evaporator is defrosted according 

to demand in the temperature range 0 °C to +6 °C.

This extends the heat-up time.

maIntenance anD cleanInG

!

materIal loSSeS

The sacrificial anode must be checked by a qualified contractor 12 months after the unit has been installed 

and checked periodically thereafter as advised by the qualified contractor.

Failure to do so may void your warranty.

note

Maintenance work, e.g.

checking the electrical safety, must only be carried out by a qualified contractor.

The device is generally maintenance free, with the exception of cleaning the condensate drain and having an author-

ised contractor check the sacrificial anode.
A damp cloth is sufficient for cleaning all plastic parts.

Never use scouring or solvent-based cleaning agents.

-

Check at least monthly the condensate drain at the middle of the unit and at the top the condensate pan drain 

(visual check).

Remove contaminants and blockages immediately.

-

Ask your local contractor to regularly check the safety assembly and the electric booster heater.

-

The device is subject to mains water pressure.

The expansion water drips from the safety valve during heat-up. 

Inform your local contractor of water drips from the system after the heat-up process has ended.

-

To protect the steel cylinder against corrosion, the interior is coated with a special enamel and is furthermore 

equipped with a protective anode.

Ask your local contractor to check the protective anode 12 months after in-

stallation and periodically thereafter as advised by your local contractor.

A sacrificial anode maintenance log is 

located at the end of this manual for your local contractor to fill in.

-

Your local contractor, who is familiar with the local water quality, should identify for you the timing of the next 

service.