3
Pre-installation Checklist (continued)
Don’ts
Never fit the pump to the cold water mains
Never fit the pump to shared incoming mains supplies to a block of flats
Never use a shared water supply or shared, communal cold water storage cistern
Never put a non-return valve (NRV), restrictive ballofix or an air vent on supply
pipe work to the pump
The hot water supply must not exceed temperature stated in the installation guide
Never use mechanical tools to tighten plastic coupler nuts as this may cause damage
and invalidate your warranty
Never use jointing compounds, Boss White, Hemp or steel wool
Solder fluxes must not come into contact with the pump or AV couplers (hoses)
Never pump directly to or from any pump such as secondary return pump or a shower with
integral pump.
Never fit pump to a Fortic Cylinder, primatic cylinder, Elson Tank or Andrews type water
heater (on rare occasions where a Fortic cylinder has adequate cold water storage, if all
other fitting criteria can be met, this would be acceptable)
If considering fitting pump to a Horizontal (torpedo) water cylinder then please
contact PumpWise on 0191 516 2002
It is not recommended to pump hot water against cold mains water with a positive head
pump
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