UK.PPC150
-
300(SL)/R32
November
2022
—Version 2.1
Domestic hot water tank for Daikin Altherma Monobloc (R32)
3.3
Preparing water piping
3.3.1
Water circuit requirements
NOTICE
In case of plastic pipes, make sure the are fully oxygen diffusion
tight according to DIN 4726. The diffusion of oxygen into the piping
can lead to excessive corrosion.
NOTICE
In case of plastic pipes, make sure the are fully oxygen diffusion
tight according to DIN 4726. The diffusion of oxygen into the piping
can lead to excessive corrosion.
•
Connecting piping—Legislation.
Making all piping connections in accordance
with the applicable legislation and the instructions in the
“
installation
”
chapter, respecting the water inlet and outlet.
•
Connecting piping—Force.
Do NOT use excessive force when connecting the
piping. Deformation of the piping can cause malfunctioning of the unit.
•
Connecting piping—Tools.
Only use appropriate tooling to handle brass,
which is a soft material. If NOT, pipes will get damaged.
•
Connecting piping—Air, moisture, dust.
If air, moisture or dust gets into the
circuit, problems may occur. To prevent this:
•
Only use clean pipes.
•
Hold the pipe end downwards when removing burrs.
•
Cover the pipe end when inserting it through a wall, to prevent dust
and/or particles entering the pipe.
•
Use a decent thread sealant to seal connections.
•
Glycol.
We recommend using anti freeze valves instead of glycol. For those
projects where antifreeze valves cannot be installed in the system, Propylene
glycol can be used. Note that inhibitor should always be added to the circuit.
•
Field supply components—Water pressure and temperature.
Check that all
components in the field piping can withstand the water pressure and water
temperature.
•
Drainage—Low points.
Provide drain taps at all low points of the system in
order to allow complete drainage of the water circuit.
•
Non
-
brass metallic piping.
When using non
-
brass metallic piping, insulate the
brass and non
-
brass properly, so that they do NOT make contact with each
other. This is to prevent galvanic corrosion.
•
Domestic hot water tank—Capacity.
To avoid stagnation of water, it is
important that the storage capacity of the domestic hot water tanks meets
the daily consumption of domestic hot water.
•
Domestic hot water tank—After installation.
Immediately after installation,
the domestic hot water tank must be flushed with fresh water. This
procedure must be repeated at least once a day the first 5 consecutive days
after installation.
•
Domestic hot water tank—Standstills.
In cases where during longer periods
of time there is no consumption of hot water, the equipment MUST be
flushed with fresh water before usage.
•
Domestic hot water tank—Pressure relief valve.
A pressure relief valve (part
of the inlet control group) with an opening pressure of 6 bar prevents
excessive water pressure in the water circuit.
•
Domestic hot water tank—Temperature and pressure relief valve.
The
temperature and pressure relief valve prevents excessive water temperature
WARNING
•
All wiring MUST be performed by an authorised electrician and
MUST comply with the applicable legislation.
•
Make electrical connections to the fixed wiring
•
All components procured on
-
site and all electrical construction
MUST comply with the applicable legislation
3.4
Preparing electrical wiring
3.4.1
About preparing electrical wiring
WARNING
•
All wiring MUST be performed by an authorised electrician and
MUST comply with the applicable legislation.
•
Make electrical connections to the fixed wiring.
•
All components procured on
-
site and all electrical construction
MUST comply with the applicable legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
3.4.2
Safety device requirements
The immersion heater in the domestic hot water tank is equipped with a
thermal protector (Set at 95°C).
WARNING
The switch box lid must only be opened by a licensed electrician.
Switch off the power supply before opening the switch box lid.
NOTICE
Do NOT install heaters without thermal cut
-
outs.
To reset the thermal protector: first check possible reasons for the thermal cut
-
out button being released and when solved press the button located on the
thermal protector.
The power supply must be protected with the required safety devices, i.e. a
main switch, a slow blow fuse on each phase and an earth leakage protector in
accordance with the applicable legislation.
Selection and sizing of the wiring should be done in accordance with the
applicable legislation based on the information mentioned in the table below.
Make sure that a separate power supply circuit is provided for this unit and that
all electrical work is carried out by a qualified personnel according to local laws
and regulations and this manual. An insufficient power supply capacity or
improper electrical construction may lead to electric shocks or fire.
Fuse
Minimum circuit
ampacity
Recommended
fuses
Power supply
Field supply
13A
16A
1~ 50Hz 220
-
240
V
4
Installation
4.1
Overview: Installation
This chapter describes what you have to do and know on
-
site to install the
systems.
