My heating engineer is planning to install a Spirotech SpiroCross AX100 LLH and a Grunfoss UPS3 15-50/65 pump.
The pump comes with 1.5" BSP connections and the LLH can be purchased with either 1", 1.25" or 1.5" connections.
Out of interest, how does a 1.5" BSP connection fit to 22mm pipework? Do the connection sizes on the LLH also indicate BSP sizes? It would seem that 1" would be the "best" size of 22mm pipes, but then 1" is 25.4mm!
The pump comes with 1.5" BSP connections and the LLH can be purchased with either 1", 1.25" or 1.5" connections.
Out of interest, how does a 1.5" BSP connection fit to 22mm pipework? Do the connection sizes on the LLH also indicate BSP sizes? It would seem that 1" would be the "best" size of 22mm pipes, but then 1" is 25.4mm!