7 Installation
Installer reference guide
28
EGSQH10S18AA9W
Daikin Altherma ground source heat pump
4P351748-1D – 2016.02
a
a
Pressure relief blow-out
The blow out should be connected to an appropriate drain according
to the applicable legislation. It is recommended to use a tundish.
WARNING
The discharge pipes from the pressure relief valves MUST
terminate in a safe and visible position without forming any
risk to persons in the vicinity.
7.5.6
To connect the drain hose
Condensate can form on the brine components inside the
compressor department of the unit. The unit contains a drain pan.
Depending on room ambient temperature, room humidity and
operation condition, the drain pan can overflow. A drain hose is
supplied with the unit.
The drain hose is routed to the backside on the left, close to the
bottom of the unit. A field supplied drain pump might be needed to
pump the water away to the field drain.
7.5.7
To fill the space heating circuit
1
Connect the water supply hose to the fill valve (field supply).
2
Open the fill valve.
3
Make sure that the automatic air purge valve is open (at least 2
turns).
INFORMATION
For location of the air purge valve, see "Dimensions and
service space: Indoor unit" in chapter
"14 Technical
data" on page 66
.
4
Fill the circuit with water until the manometer indicates a
pressure of ±2.0 bar.
a
a
Water manometer
5
Purge as much air as possible from the water circuit.
NOTICE
▪ Air in the water circuit can cause malfunctioning of the
backup heater. During filling, it may not be possible to
remove all the air from the circuit. Remaining air will be
removed through the automatic air purge valves during
the initial operating hours of the system. Additional
filling with water afterwards may be required.
▪ To purge the system, use the special function as
described in the chapter
"9 Commissioning" on
page 55
. This function should be used to purge the
heat exchanger coil of the domestic hot water tank.
6
Close the fill valve.
7
Disconnect the water supply hose from the fill valve.
NOTICE
The water pressure indicated on the manometer will vary
depending on the water temperature (higher pressure at
higher water temperature).
However, at all times water pressure shall remain above
1 bar to avoid air entering the circuit.
7.5.8
To fill the domestic hot water tank
1
Open every hot water tap in turn to purge air from the system
pipe work.
2
Open the cold water supply valve.
3
Close all water taps after all air is purged.
4
Check for water leaks.
5
Manually operate the field-installed pressure relief valve to
ensure a free water flow through the discharge pipe.
7.5.9
To insulate the water piping
The piping in the complete water circuit MUST be insulated to
prevent reduction of the heating capacity.
7.6
Connecting the electrical wiring
7.6.1
About connecting the electrical wiring
Before connecting the electrical wiring
Make sure the brine and water piping are connected.
Typical workflow
Connecting the electrical wiring typically consists of the following
stages:
1
Making sure the power supply system complies with the
electrical specifications of the heat pump.
2
Connecting the electrical wiring to the indoor unit.
3
Connecting the main power supply.
4
Connecting the remote outdoor sensor.
5
Connecting the user interface.
6
Connecting the shut–off valves.
7
Connecting the electrical meters.
8
Connecting the domestic hot water pump.
9
Connecting the alarm output.
10
Connecting the space heating ON/OFF output.
11
Connecting the changeover to an external heat source.
12
Connecting the power consumption digital inputs.
