Water Connection; Inlet Connection; Tank Water Quality Management; Water Drain Connection - Kaden KC17 Installer Manual

Evaporative air coolers
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8. WATER CONNECTION

8.1 INLET CONNECTION

The water inlet connection point is under the cooler base on the left hand side, at the high side of the roof. The
connection is via a 1/2" BSP female fitting supplied on a flexible hose.

8.2 TANK WATER QUALITY MANAGEMENT.

An electronic water level sensor automatically maintains the correct water level within the tank. The cooler is
programmed to periodically flush the tank and refill it with clean water, depending on the operating conditions, and
automatically maintain the water quality within the tank.

8.3 WATER DRAIN CONNECTION

Cooler units have a drainage connection point at the underside of the base, on the low side of the roof.
When the cooler's discharge is likely to fall on a roof or catchment area for potable water, or water reuse, then a
drain MUST BE fitted. In some municipalities it is mandatory to fit a drain to the cooler. Check with the local
authority regarding the regulations.
Where required it is recommended the drain outlet be plumbed to a suitable point in order to disperse the waste
water away adequately without causing damage or nuisance i.e. overflowing roof guttering, accelerated corrosion.
There are two recommended options when connecting drainage to the unit:
Option one is for a small diameter pipe, which MUST slide over the Ø19.8mm fitting detailed in Figure 1.
Option two is for a larger diameter pipe and prior to connection, the snorkel outlet MUST BE modified by cutting
and de-burring at the "CUT LINE" shown in Figure 1. Once complete, slide on the large diameter pipe, drill a
pilot hole Ø3mm and secure with a 8gx3/8 stainless steel screw as shown in Figure 2.
Ensure that all field supplied drainage pipe is rigid (not flexible) and UV stabilised.
Ensure any drain has a continuous fall, the joints and fittings are adequately sealed, and that all penetrations in
and out of the roof cavity are sealed against water entry into the building.
The drain pipe MUST also be properly supported along its entire run, and MUST NOT place strain on the Cooler's
outlet fitting or base.
For installations on tiled roofs where a drain may not be required, it is recommended a water distribution spreader
be fitted to the Cooler's drain outlet.
15

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