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7 Installation
The blow out should be connected to an appropriate drain according
to the applicable legislation. It is recommended to use a tundish.
7.5.3
To fill the water circuit
1 Connect the water supply hose to the fill valve.
2 Open the fill valve.
3 Make sure that the automatic air purge valve is open (at least 2
turns).
INFORMATION
For
location
of
"15.3.3 Components: Indoor unit" on page 80.
4 Fill the circuit with water until the manometer indicates a
pressure of ±2.0 bar.
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 66. 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.
7.5.4
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 that free water flow through the discharge pipe.
7.5.5
To insulate the water piping
The piping in the complete water circuit must be insulated to prevent
condensation during cooling operation and reduction of the heating
and cooling capacity.
If the temperature is higher than 30°C and the humidity is higher
than RH 80%, the thickness of the sealing materials should be at
least 20 mm to prevent condensation on the surface of the sealing.
Installer reference guide
34
the
air
purge
valve,
see
7.5.6
To connect the recirculation piping
1 Loosen and remove the screws at the bottom of the unit.
2 Slide the front panel of the unit downwards and remove it.
3 Loosen and remove the 4 screws that fix the top panel.
4 Remove the top panel from the unit.
3
4x
4
2
2x
1
5 Remove the expansion vessel.
6 Remove the upper insulation cover of the unit.
a Knock-out hole
b Connection for recirculation piping
7 Remove the knock-out hole at the backside of the unit.
8 Connect the recirculation piping to the recirculation connection
and route the piping through the knock-out hole at the backside
of the unit.
9 Remove the indicated part in the figure below.
ERLQ004~008CAV3 + EHVH/X04+08S18CA + EHVH/X08S26CA
a
b
Daikin Altherma - Low Temperature Split
4P313775-1C – 2012.11
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