To Fill The Water Circuit; To Insulate The Water Piping - Daikin VRV IV W+ Series Installer And User Reference Manual

18 | Piping installation

18.6.4 To fill the water circuit

18.6.5 To insulate the water piping

Installer and user reference guide
102
1 Connect the water supply hose to the fill valve (field supply).
2 Open the fill valve.
3 Run the pump ONLY and make sure that no air has been caught in the water
circulation system otherwise the plate heat exchanger will freeze.
4 Check if the water flow rate is correct, otherwise the plate heat exchanger will
freeze. Measure any water pressure loss before and after running the pump
and make sure that the flow rate is correct. If not, stop the pump immediately
and carry out troubleshooting.
The outdoor water piping MUST be insulated to prevent condensation during
heating operation or to protect against freezing at cold ambient temperatures.
See "18.2.2 Water circuit
4
requirements" [ 78] for more information.
RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10