Daikin Altherma ERLQ004-006-008CA, Справочное руководство, Страница: 32 / 108

7 Installation
Installer reference guide
32
ERLQ004~008CA + 08S18CB
Daikin Altherma – Low temperature split
4P401676-1 – 2015.02
b
a
a Piping intake hole
b Recirculation connection
4 Re-attach the casing.
7.8.5 To connect the pressure relief valve to the
drain
The blow out of the pressure relief valve is coming out of the
backside of the unit.
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.
7.8.6 To fill the water circuit
1 Connect the water supply hose to the fill valve.
a b
INFORMATION
Please fill with water through connection a OR b. Both
circuits (main and additional) will be filled.
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 "Components:
Indoor unit" in chapter
"14 Technical data" on page 71 .
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 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.
7.8.7 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.
7.8.8 To insulate the water piping
The piping in the complete water circuit MUST be insulated to
prevent condensation during defrost operation and reduction of the
heating 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 Connecting the electrical wiring
7.9.1 About connecting the electrical wiring
Before connecting the electrical wiring
Make sure:
▪ The refrigerant piping is connected and checked
▪ The water piping is connected