Douglas BF 10-LPG Installation & User Manual - Page 8

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DOUGLAS & Co. BF 10H-NG BF 10-LPG HEATER UNITS

INSTALLATION USER INSTRUCTION MANUAL

Page 8 of 20

Installation of flue systems : (Continued)

The Inner Flue Duct (correctly cut to length) has the Flared end connected to the Inner Flue Elbow

by means of self tapping screws or pop rivets as shown

. I Ensure that there are no air gaps in the

connection of the components as this will

result in the Pilot burner going out.

Now the Inner Flue Duct & Elbow Assembly

is slid through the Outer Air Duct and the non

flared end is located into the Internal Flue

Chamber of the External Wall Balanced Flue

Assembly, (as shown below)

The Inner Flue Elbow is very carefully located over the top

of the Water Chamber Heat Exchanger so as to fully

cover the chamber and align, with the copper top rim of

the Heat Exchanger true and square within the Elbow.

The elbow is secured with the seif tappers screws to the

tabs on the Wall box casing. The exhaust flue assembly

thus created

should

be examined to ensure

good

alignment, seal and support.

The bottom plate is now secured in the properly aligned

position and screws re-fastened. The hot and Cold Water

Supply and Gas Supply Connections are made at this

stage.

Heater

appearance at

this stage is

shown.

Note

: All

connections

are

made

accordance with

AS/NZS 3500.4 & AS 5601. All Water & Gas connections

are leak tested. It is most important to replace front

cover

I before operating lighting sequence and test operation

I burner fire-up.

: The following notes apply to Connections, Testing

& Hand

over.