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7 Installation
NOTICE
In Europe, the greenhouse gas emissions of the total
refrigerant charge in the system (expressed as tonnes CO
equivalent) is used to determine the maintenance intervals.
Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
2 Fix the label on the inside of the outdoor unit near the gas and
liquid stop valves.
7.10
Connecting the water piping
7.10.1
About connecting the water piping
Before connecting the water piping
Make sure the outdoor unit, indoor unit and gas boiler are mounted.
Typical workflow
Connecting the water piping typically consists of the following
stages:
1
Connecting the water piping of the indoor unit.
2
Connecting the water piping of the gas boiler.
3
Filling the space heating circuit.
4
Filling the domestic water circuit of the gas boiler.
5
Filling the domestic hot water tank.
6
Insulating the water piping.
7.10.2
Precautions when connecting the water
piping
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
7.10.3
Connecting the water piping of the indoor
unit
To connect the water piping for space heating
NOTICE
In case of old heating installations, it is recommended to
use a dirt separator. Dirt or sediment from the heating
installation can damage the unit and reduce its lifetime.
NOTICE
Do NOT use excessive force when connecting the piping.
Deformation of the piping can cause malfunctioning of the
unit.
NOTICE
▪ It is recommended to install shut-off valves to space
heating in and space heating out connections. Shut-off
valves are field supplied. They allow service to the unit
without draining the whole system.
▪ Foresee a drain/fill point to drain or fill the space
heating circuit
Installer reference guide
36
NOTICE
Do NOT install valves to shut down the entire emitter
system (radiators, floor heating loops, fan coil units, ...)
2
instantly if this can result in an immediate short circuit of
the water flow between the outlet and the inlet of the unit
(for example via a bypass valve). This may trigger an error.
1 Connect the water inlet connection (Ø22 mm).
2 Connect the water outlet connection (Ø22 mm).
b
a
a
Water inlet
b
Water outlet
3 In case of connection with the optional domestic hot water tank,
see the installation manual of the domestic hot water tank.
NOTICE
Install air purge valves at all local high points.
NOTICE
In case an optional domestic hot water tank is installed: A
pressure relief valve (field supply) with an opening
pressure of maximum 10 bar must be installed on the
domestic cold water inlet connection in accordance with
the applicable legislation.
NOTICE
In case an optional domestic hot water tank is installed:
▪ A drain device and pressure relief device must be
installed on the cold water inlet connection of the
domestic hot water cylinder.
▪ To avoid back siphonage, it is recommended to install a
non-return valve on the water inlet of the domestic hot
water tank in accordance with the applicable legislation.
▪ It is recommended to install a pressure reducing valve
on the cold water inlet in accordance with the
applicable legislation.
▪ An expansion vessel should be installed on the cold
water inlet in accordance with the applicable legislation.
▪ It is recommended to install the pressure relief valve on
a higher position than the top of the domestic hot water
tank. Heating of the domestic hot water tank causes
water to expand and without pressure relief valve the
water pressure inside the tank can rise above the tank
design pressure. Also the field installation (piping,
tapping points, etc.) connected to the tank is subjected
to this high pressure. To prevent this, a pressure relief
valve needs to be installed. The overpressure
prevention depends on the correct operation of the field
installed pressure relief valve. If this is NOT working
correctly, overpressure will deform the tank and water
leakage may occur. To confirm good operation, regular
maintenance is required.
EVLQ05+08CAV3 + EHYHBH05AA + EHYHBH/X08AA +
EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1C – 2018.06
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