Condensate Drain - Daikin UATYA-BBAY1 Manuel D'installation, D'utilisation Et D'entretien

6.9.1.5

Condensate drain

Special attention must be paid when draining condensate. Incorrect condensate drainage may jeopardise correct
equipment operation.
Factors to keep in mind include:
- hazard resulting from condensate build-up in the heat exchanger;
- hazard resulting from condensate water freezing in the pipes;
- hazard resulting from fume exhaust from the steam trap.
Refer to the requirements prescribed by the local regulations for condensate drainage.
Condensate water must not build up in the heat exchanger during normal operation.
An electrode installed in the syphon inside the generator monitors the burner and stops it before water reaches the
level that is deemed hazardous in the fume collection hood.
The unit must be installed perfectly levelled in order to keep unaltered the typical angle of the tube bundle in the
generator.
Gas burners are supplied with an attachment for condensate drainage in the low left-hand side of the unit.
The following materials should be used for the steam trap:
- aluminium, stainless steel, silicone or Viton or EPDM - this applies to hot pipes used for fume transit;
- PVC and all materials suitable for use with hot pipes - this applies to cold pipes through which only water flows.
Copper or galvanised iron pipes must not be used.
When the unit is installed outdoors and the outside temperatures are not extremely low, it is possible to avoid
connecting the steam trap to the pipes. A check must be made that drained water does not stagnate near the unit.
If the drained fluid needs to be piped, an open connection (tapered type), similar to the connection below, must be
fitted to prevent ice forming in the pipe from obstructing condensate drainage, which eventually results in water
building up in the heat exchanger.
If the drain pipe is installed outdoors, it may require heating using a heating wire.
Condensate must be drained in a suitable place, at least 5 metres away from the unit.
Condensate has corrosive properties and may damage the unit or other parts of the system if it is not
drained correctly.
Translation from original instructions
Packaged Rooftop
62
Fig. 41 Condensate drainage using a tapered drain piece
We reserve the right to make changes without any prior notice.
4P645202-2
UATYA