correct installation advice for secondary return and pumped shower

[supermario]

If I fit an indirect cylinder with a secondary return pump fitted to an Essex flange and then fit another essex flange to supply a pump for a shower, will the secondary return pump affect the flow switch on the shower?, i.e. will this cause the shower pump to kick in when their is no demand?.

 

[garrywhite]

Not if they are seperate circuits. Flow switch is only activated by drawing off from the shower pump.

 

[supermario]

thanks for advice