What are the extra inlet/outlets?

[Buller44]

Hi, came across this cylinder today! Customer asked what the two outlets were for. I didn't really know so thought I would seek some advice. Sort of established that the 15mm on the left is a hot water draw off but not sure about the 22mm above the primary. Hope someone can help

 

[lame plumber]

2ndry return, best to replace the speed fit cap end with a compression as lots of heat will degrade it in the long turn and it will become a primary drain, omho

 

[ecowarm]

Is the 15mm a secondary return and the 22mm for a shower connection if needed?

 

[lame plumber]

Is the 15mm a secondary return and the 22mm for a shower connection if needed?

dunno arent we telling him

 

[ecowarm]

maybe

 

[Buller44]

Haha, thank you guys. Makes sense now as they mentioned they used to have a shower running off the cylinder. Am back there on Friday so will cap it off properly. Thanks again.