Unit Operation; Bleed Off - BONAIRE Durango 4500E Owner's Manual

BONAIRE WINDOW COOLER
Operation Instructions

Unit Operation

It is essential for successful operation of the evaporative cooler that there be sufficient free air openings in
the room to be cooled – approximately 0.5m² (5.4² feet). Open doors and windows will usually provide this
as per the diagrams below.
Please Note: - It is important for good ventilation that doors or windows are not open on the windward
side of the house. Please note the room furthest away from the cooler needs to have more ventilation
than rooms closest to the cooler.

Bleed Off

The bleed off rate is factory preset and is not adjustable without direction of the
manufacturer. It is critical to the life of the product that the bleed off function is not
restricted in any way as this may void unit warranty and will cause damage to your
filters and cooler.
To prevent a Bleed Line Siphon, do not let the Bleed Line extend from the Overflow
Pipe more then 2".
The function of the bleed off must be inspected by the owner on a regular basis to
ensure the bleed off continuously flows when the unit is operating "COOL" mode.
All evaporative coolers require water bleed-off to prevent build-
up of mineral deposits as the result of the evaporative cooling
process. This will maximize the life of the premium CELdek®
filter pads and minimize mineral deposits inside the cooler. The
bleed off function only operates in COOL mode (when the water
pump operates).
Should water supply contain high levels of total dissolved solids
(greater than 300 p.p.m.), increase the bleed rate. See page 14.
This bleed water can be used in gardens or diverted to drains
using standard garden hose and fittings from your local
hardware store. The overflow pipe connection is a ¾" x 14TPI
ANS straight pipe thread.
Please Note: - Any additional pipe work fitted to the bleed off by the owner must slope away from the unit
in a down hill manner.
If water discharge is not an option because of installation location or cost of water, you may coil the bleed
hose inside the cooler opposite the Float Valve so the water recirculates back into the tank. Please be
aware that this will result in the CELdek® Pads needing to be changed more frequently.
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