Bleeding The Brine Circuit; Vent Outdoor Unit, Geysir Air - York YHGS Installation Instructions Manual

1.
Set the heat pump operating mode to "OFF" in the control
computer menu INFORMATION -> OPERAT.
2.
Mix water and anti-freeze in the correct proportions in an
external container (12). Note that each pack must be well
mixed.
3.
Check that the freezing point of the mixture is reached using a
refractometer (-15°C for Geysir, Geysir with Passive cooling,
(-32°C for Geysir Air).
4.
Fill the system with the mixture using an external pump (11)
which can bleed the brine lines. Connect the pressure side of
the pump to the filler connection at valve (5).
5.
For Geysir Air: open the defroster shunt in control computer
menu SERVICE -> MANUAL TEST -> SHUNT DEFR,
change the value to -.
6.
Close valve (4).
7.
Open valves (5) and (10).
8.
Open valve (3) and connect a transparent hose that opens out
into the external container (12).
9.
Open valve (3).
10.
Start the external pump (11) and fill the brine pipes.
11.
Start the brine pump manually in the control computer menu
SERVICE -> MANUAL TEST -> BRINEPUMP, set the value
to 1.
12.
Run the brine pump and the external pump (11) in series until
fluid, clear of air, comes out of the return hose from the valve
(3).
13.
Stop the brine pump in the control computer menu SERVICE
-> MANUAL TEST -> BRINEPUMP, set the value to 0, at the
same time leave the external pump running.
14. Open valve (4) with the external pump running to eliminate
the air between the valves (3) and (5).
15.
Close valve (3) and pressurise the system using the external
pump. NOTE! Max. 150kPa, (1.5bar).
16.
Close valve (5).
17.
For Geysir Air: close the defroster shunt in the control
computer menu SERVICE -> MANUAL TEST -> SHUNT
DEFR, set the value to 0.
18.
Stop the external pump (11) and disconnect the filling
equipment.
19.
Install insulation on the filler cock.

8.8. BLEEDING THE BRINE CIRCUIT

NOTE! When topping up, the brine pump must be
!
running.
1. Start the brine pump in the control computer menu SERVICE ->
MANUAL TEST -> BRINEPUMP, set the value to 1.
2.
Check that the level in the bleed tank (9) is stabilised.
3.
Dismantle the safety valve (8) on the bleed tank.
4.
Top up with brine to 2/3 of the tank through the connection
on which the safety valve (8) was installed.
5.
Leave the brine pump running so that that the air in the
system collects in the bleed tank.
6. As air separates in the bleed tank the fluid level drops, top
up as in step 4.
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ENGLISH
7.
Reinstall the valve (8) when all air has been removed from
the system.
8.
Open valve (8) and release any overpressure. The fluid
level should not fall below 2/3 of the height of the tank.
9.
Check that valve (3) is closed.
10.
Stop the brine pump in the control computer menu SERVICE
-> MANUAL TEST -> BRINEPUMP, set the value to 0.
11. Switch to the desired operating mode if the heating system
has been filled and bled.
Collect any excess brine in a plastic container for topping up the
system if necessary (leave it with the customer).

8.9. vENT OUTDOOR UNIT, GEYSIR AIR

If the outdoor unit is installed higher than the heat pump with a
pressurised brine system, the outdoor unit must be bled using the
bleed screws on the connection pipes.
The side covers of the outdoor unit must be removed to access
the bleed screws.
Figure 58: Bleed screw locations.
If the outdoor unit is installed at the same level or lower than the
heat pump it is recommended that the brine circuit in the outdoor
unit is also bled.
Bleed screws