CASCADE FRAME INSTALLATION
6 720 648 720 (2011/07)
11
B
Repeat the above steps to install all boilers.
B
If required, seal off any unused connections of the
main gas pipe and the header.
B
Install the condensate drain pipe. Use the pre-
assembled mounting brackets on the supports for
this.
B
When installing a cascade with an angled low loss
header, install the set of bends between the header
and the low loss header. Fit the enclosed flange seals
in between. Use the corresponding screws.
–
2½ " low loss header
M12 x 50
–
3" low loss header
M16 x 55.
B
Install the low loss header with the corresponding
flange seals. Use the corresponding screws.
–
2½ " low loss header
M12 x 50
–
3" low loss header
M16 x 55.
5.2
INSTALLING THE INSULATION
B
Install the rear insulation over the header [1].
B
When an angled low loss header has been installed, fit
the insulation around the bends.
B
Install the rear insulation part over the low loss
header [2].
B
If required, trim the insulation so that it is straight [3].
Fig. 9
Sammelleitung
B
For 2½" and 3" low loss header: install the inserts in
the outer insulation. For a 2½" low loss header: install
the reducing inserts in the outer recesses [2]. For a 3"
low loss header: install the reducing inserts in the
inner groves [1].
Fig. 10 Inner insulation
B
Click the insulation together.
B
Install the front insulation of the low loss header. If
required, trim the insulation so that it is straight
(
Æ
fig. 9, [3]).
B
Install the end cover over the header (
Æ
fig. 9, [4]).
CAUTION:
B
Do not install the pump group cover until
pressure has been supplied to the boiler
system and the gas pipe.
B
Check the cascade system for leaks.
CAUTION:
First start up the cascade system and test
the system for leaks. Then install the
insulation.
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3
2
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.1TD
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