To Fill The Water Circuit; To Fill The Domestic Hot Water Tank; To Insulate The Water Piping; Connecting The Electrical Wiring - Daikin Altherma ERLQ011-014-016CA Installer's Reference Manual

NOTICE
▪ A drain device and pressure relief device should 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
higher position as 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 relieve 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.
7.8.4

To fill the water circuit

1 Connect the water supply hose to the drain and fill valve.
2 Open the drain and 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 "Components:
Indoor unit" in chapter "14 Technical data" on
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.
6 Close the drain and fill valve.
7 Disconnect the water supply hose from the drain and 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.
ERHQ+ERLQ011~016 + EHBH/X11+16CB
Daikin Altherma – Low temperature split
4P384974-1 – 2015.01
7.8.5
For installation instructions, see the installation manual of the
domestic hot water tank.
7.8.6
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 insulation materials should be at
least 20 mm to prevent condensation on the surface of the
insulation.
7.9
7.9.1
Before connecting the electrical wiring
Make sure:
▪ The refrigerant piping is connected and checked
▪ The water piping is 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 outdoor unit.
3 Repositioning the air thermistor on the outdoor unit.
4 Connecting the electrical wiring to the indoor unit.
5 Connecting the main power supply.
6 Connecting the backup heater power supply.
7 Connecting the user interface.
8 Connecting the shut–off valves.
9 Connecting the electrical meters.
10 Connecting the domestic hot water pump.
11 Connecting the alarm output.
12 Connecting the space cooling/heating ON/OFF output.
13 Connecting the changeover to an external heat source.
14 Connecting the power consumption digital inputs.
7.9.2
ERHQ_V3
Equipment
International Technical Standard setting the limits for harmonic
page 83.
currents produced by equipment connected to public low-voltage
systems with input current >16 A and ≤75 A per phase.).

ERLQ_V3

Equipment complying with:
▪ EN/IEC 61000‑3‑11 provided that the system impedance Z
less than or equal to Z
supply and the public system.
▪ EN/IEC
Standard setting the limits for voltage changes, voltage
fluctuations and flicker in public low-voltage supply systems for
equipment with rated current ≤75 A.
▪ It is the responsibility of the installer or user of the equipment to
ensure, by consultation with the distribution network operator if
necessary, that the equipment is connected only to a supply
with a system impedance Z

To fill the domestic hot water tank

To insulate the water piping

Connecting the electrical wiring

About connecting the electrical wiring

About electrical compliance

complying with EN/IEC 61000‑3‑12
at the interface point between the user's
max
61000‑3‑11 = European/International
less than or equal to Z
sys
7 Installation
(European/
is
sys
Technical
.
max
Installer reference guide
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