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Installation instructions Logamax plus GB162-80/100 cascade unit • Version 01/2006
Cascade frame installation
4
4.1
Boiler assembly and pump group
installation
z
Hang the first boiler on the cascade frame as shown in fig. 7
or fig. 8.
z
Put the boiler in the correct position and level it horizontally
and vertically. Use the set screws on the lower rear of the
boiler to adjust it.
z
Connect the pump group (see Logamax plus GB162 Instal-
lation and service instructions).
z
Remove the protective yellow caps from the main gas pipe.
z
Apply PTFE tape to the screw thread connections.
z
Connect up the gas connection pipe between the gas valve
and the main gas pipe. Use PTFE tape to create a perfect
seal.
z
Remove the protective caps from the header.
z
Remove all red paint and unevenness from the flow and
return connections of the header.
z
Install the flow pipe(s) between the header and the pump
group.
z
Install the return pipe(s) between the header and the pump
group.
z
Repeat the above steps to install all boilers.
z
If required, seal off any unused connections of the main gas
pipe and the header.
z
Install the condensate drain pipe. Use the pre-assembled
mounting brackets on the supports for this.
z
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
z
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
Fig. 7
Installation sequence for a TL-inline configuration
1
2
3
Note!
You must observe the installation sequence
indicated in fig. 7 and fig. 8 when installing the
boilers.
Fig. 8
Installation sequence for TR-back-to-back
configuration
1
3
5
2
4
6
Caution!
– Do not install the pump group cover until
pressure has been supplied to the boiler
system and the gas pipe.
– Check the cascade system for leaks.
