Daikin EHYHBH05AFV32 [70/252] Connecting the refrigerant piping

7 | Installation

Installer reference guide

EVLQ05+08CAV3 + EHYHBH05AF + EHYHBH/X08AF + EHYKOMB33AA

Daikin Altherma hybrid heat pump

4P355634-1F – 2020.10

The pump outlet pipe should discharge to a suitable internal foul water discharge

point such as an internal soil and vent stack, internal kitchen, bathroom waste

pipe, or washing machine waste pipe. A suitable permanent connection to the foul

waste pipe should be used.

Ø22 mm

≥75 mm

a Condensate discharge from boiler

b Soil and vent stack

c Sink or basin with integrated overflow

d 75mm waste trap and air break

e Condensate pump

7.6.2 External connections

If an externally condensate drainage pipe is used, following measures should be

made to prevent freezing:

▪ The pipe should be run internally as far as possible before going to the outside.

The pipe diameter should be increased to a minimum inner diameter of 30mm

(typically outer diameter of 32mm) before it goes through the wall.

▪ The external run should be kept as short as possible, taking the most vertical

route possible to the discharge point. Take into account that there are no

horizontal sections in which condensate might collect.

▪ The external pipe should be insulated. Use a suitable waterproof and weather

proof insulation ("ClassO" pipe insulation is suitable for this purpose).

▪ The use of fittings and elbows should be kept to a minimum. Any internal burrs

should be removed so that the internal pipe section is as smooth as possible.

7.7 Connecting the refrigerant piping

7.7.1 About connecting the refrigerant piping

Before connecting the refrigerant piping

Make sure the outdoor and indoor unit are mounted.

Typical workflow

Connecting the refrigerant piping involves:

▪ Connecting the refrigerant piping to the outdoor unit

▪ Connecting the refrigerant piping to the indoor unit

▪ Insulating the refrigerant piping