Hi,
Based on research on TFP and elsewhere, for new build I was planning on solar heating run by main filter pump (Intelliflo), with automation to switch 3 way valve and increase VS speed when solar is active.
The catch is *every* installer has told me flat out they never install that way on a new build and basically it's a stupid idea. They want a dedicated pump and suction/return for the solar.
The arguments against using filter pump are:
1. I have to run the full filter loop at higher flow rate when solar is on. = way more TDH and hence electricity use
2. TDH on solar is too high for standard filter pumps, they will wear much faster.
These points kinda make sense to me, but then it seems like most people on TFP are just using the filter pump? Suspect this may be another US versus Australia thing?
Based on research on TFP and elsewhere, for new build I was planning on solar heating run by main filter pump (Intelliflo), with automation to switch 3 way valve and increase VS speed when solar is active.
The catch is *every* installer has told me flat out they never install that way on a new build and basically it's a stupid idea. They want a dedicated pump and suction/return for the solar.
The arguments against using filter pump are:
1. I have to run the full filter loop at higher flow rate when solar is on. = way more TDH and hence electricity use
2. TDH on solar is too high for standard filter pumps, they will wear much faster.
These points kinda make sense to me, but then it seems like most people on TFP are just using the filter pump? Suspect this may be another US versus Australia thing?