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35
TopGas Cascade
60 - 720 kW
4215256-00 - 11/16
TopGas Cascade Assembly
Fit the flow pipe valve set to the boiler complete with supplied gas-
ket and union (2067951) and tighten. Ensure all valves are correctly
aligned as per the picture.
5.5. Step 5: Connect the boiler to the flow and return headers (TopGas 60 and 80)
Fit the supplied circulation pump to the return connection of the
boiler with a gasket joint. Be aware of the flow direction, this should
be pointing up towards the boiler. When satisfied that all is correct
tighten the union (2067951).
Fit the remaining return pipe valve set to the underside of the pump
using the supplied gasket and tighten. Ensure all valves are cor-
rectly aligned as per the picture below. When complete fit the two
piece pump insulation housing (2056817).
The pump will be supplied with a 2m long MOLEX connector lead
(2056730) that wires into terminals 25, N, E.
Arrange the pump (2056729) and valve set (6012948) ready to be
connected to the boiler. Please be aware that all of the gaskets
must be fitted in the correct positions as shown in the picture on
the right.
Note: the pump may be different to the one shown in the
photograph.