7 Installation
Installer reference guide
26
EGSQH10S18AA9W
Daikin Altherma ground source heat pump
4P351748-1D – 2016.02
7.4.3
To connect the brine piping
a
b
a
Brine out
b
Brine in
NOTICE
To facilitate service and maintenance, it is recommended
to install shut-off valves as close as possible to the inlet
and outlet of the unit.
7.4.4
To fill the brine circuit
WARNING
Before, during and after filling carefully check the brine
circuit for leakage.
WARNING
Temperature of the fluid running through the evaporator
can become negative. It MUST be protected against
freezing. Refer to setting [A‑04] in
"8.2.2 Quick wizard:
Standard" on page 36
.
INFORMATION
The materials used in the units brine circuit are chemically
resistant to the following anti-freeze fluids:
▪ 40 mass% propylene glycol
▪ 29 mass% ethanol
1
Connect the unit to the field supplied brine filling system.
2
Position the 3‑way valve correctly.
3
Fill the circuit with brine until the manometer indicates a
pressure of ±2.0 bar.
a
a
Brine manometer
4
Purge as much air as possible from the brine circuit. For
instructions, see
"9 Commissioning" on page 55
.
5
Return the 3‑way valve to its original position.
7.4.5
To connect the pressure relief valve to the
drain on the brine side
The blow out of the pressure relief valve is coming out of the
backside of the unit.
WARNING
▪ All pipe work connected to the brine pressure relief
valve MUST have a continuous fall.
▪ The discharge pipe from the brine pressure relief valve
MUST terminate in a safe, visible position without
forming any risk to persons in the vicinity.
7.4.6
To insulate the brine piping
The piping in the complete brine circuit MUST be insulated to
prevent reduction of the heating capacity.
Consider that the brine circuit piping inside the house can/will
condensate. Foresee adequate insulation for these pipes.
