8
Gas 220 Ace Cascade Assembly Manual V 18042018
Fig. 2
A Grundfos Magna 1 40-60 F shunt pump is fitted on the return pipe kit. The pump selection takes
into consideration the boiler resistance and the pipework resistance to the low loss header at a 20C
flow/return temperature differential.
A check valve is fitted between boiler and pump and an isolating valve is fitted between pump and
return collector.
A pressure relief valve and an isolating valve are fitted on the flow pipe kit,.
The gas pipe kit has no flexible pipe, but the collector position relative to the boiler position can be
adjusted due to the flexible pipes fitted on the Flow and Return pipe kits. An isolation valve is provided
on the Gas pipe kit.
Assembly instructions
Use the guidelines and the required installation space as a basis for determining the correct place to
install the boilers.
Ensure that there is sufficient space around the boiler for good access and ease of maintenance.
Refer to Installation, User and service manual for minimum clearances for the boiler. Follow all the
installation instructions as presented in the
Gas 220 Ace Installation, user and service manual,
Boiler gas union
Collector gas union
Flow pipe kit
Gas pipe kit
Gas isolating valve
Flexible pipe
Collector flow union
Safety valve
Isolating valve
Boiler flow union
Flexible pipe
Collector return union
Boiler return union
Return pipe kit
Isolating valve
Check valve
Shunt pump
