12 DKDHR
VI.GP.V2.02
Danfoss District Energy
Instructions
Akva Lux II VX
7.0 Getting started
Connect the substation to the household piping in accordance with
the labelling at the bottom and in accordance with the instructions
in this manual.
If the system features DHW recirculation, a recirculation connection
must be established on the substation.
For instructions about recirculation connection, see page 14.
We recommend establishing recirculation BEFORE mounting the
substation on the wall.
Start-up
1. The ball valves are supplied loose with the substation. Mount the
ball valves for DH supply and return as well as the ball valves for
HE supply and return in the top of the substation. Mount the ball
valves for DHW and DCW in the bottom of the substation.
2. Please note that change of connection from bottom to top
for DCW and DHW includes relocation of blind plates BEFORE
mounting the substation on the wall. (See page 13, item 8.1
for further information.
3. The substations are for wall mounting, and the mounting sheet
has got holes for installation. Fix the substation on a solid wall
with two sturdy bolts, screws, expansion bolts or the like.
Please note that we recommend min. two people to lift the
substation.
4. Close all shut-off valves at the substation before connecting
them to the household piping.
5. Mount expansion vessel on substation types Akva Lux II VX3 and
Akva Lux II VX3-E, - see page 16.
6. Mount heat meter, - see page 17.
7. IMPORTANT! Tighten
all
connections, as vibrations dur-
ing transport and handling may have caused leaks.
CAUTION!
Please note that the connections may be supplied
with EPDM rubber gaskets.
Therefore take care not to over-
strain the union nuts, as this may result in leaks.
The manu-
facturer accepts no liability for leaks that result from overstrain
of union nuts.
8. On systems that feature a safety valve, establish a drain con-
nection in compliance with the applicable legislation.
9. Set temperature for AT safety thermostat for floor or radiator heat-
ing.
10. If the household piping system features domestic hot water
recirculation, the substation must be connected to the recir-
culation system. See page 14 for more information about DHW
recirculation.
11. Carefully open the ball valves for the HE supply and return flow as
well as the ball valve for DCW. Carefully open the fill valve and fill
the system with water and at the same time vent the system. Fill
the heat exchanger / the system with water until the manome-
ter shows a working pressure, which correspondes to the system
5 m (approx. 1.2 - 1.5 bar), - see page 18.
12. Close the fill valve.
13. Subsequently open the ball valve for the DH supply and return
flow and heat up the system.
14. Check the substation and the household piping carefully for any
leaks
15. Pressure test the entire system for leaks in accordance with the
applicable regulations.
16. Connect pump(s) and automatic components to the electricity
supply, but
do not
switch on the power.
17. Heat the system and vent the radiator circuit/heating side
thoroughly on the radiators and the air valve, if any.
18. Switch on the pumps and automatic components.
19. Finish by adjusting the substation in accordance with this
instruction manuals.
IMPORTANT! Heating and cooling of the system may cause
leaks. Therefore it may be necessary to retighten the connec-
tions in the period after commissioning.
Check list!
1. Remove plug, if DCW connection is established in
top.
2. Remove plug, if DHW connection is established in
top.
3. Set AT thermostat for floor or radiator heating.
4. Adjust the bypass valve.
5. Connect outdoor temperature sensor to the ECL
controller. (ECL 110, terminals 1 and 2), (ECL 310,
terminals 29 and 30).
6. Adjust controller’s min/max. temperature and
heating curve, - for floor or radiator heating.
