There are two retrofit systems we sell, both of which will enable a traditional hot water cylinder to heat a full tank of hot water to store four times the energy.
Fit the one that’s easier for you fit and does what you want to do so read about both of them.

Hot water recirculation
Best for storing surplus energy produced during the day.
Perfect for storing surplus energy imported at night

Cold water recirculation
Slight reduction in output temperature when you demand.
Perfect for storing surplus energy imported at night.

BUY OR BORROW THE TOOLS REQUIRED TO UNDERTAKE THE WORK
15MM PIPE SLICE & 22MM PIPE SLICES TO CUT COPPER PIPE IF REQUIRED AND
PREFERABLY TWO ADJUSTABLE SPANNERS

 

WHAT IS THE CROSS LINK BETWEEN COLD TO HOT

15MM X 22MM X 22MM COMPRESSION TEE (SUPPLIED)
Clean up the pipe and use a pipe slice to cut. Slip the the tee onto the cold pipe. and tighten the nuts.
You may need to use the slip joint if there is no play in the pipe.

The WrightChoice Micro Pump (SUPPLIED), comes complete with end fittings (15 mm compression).
The end fittings when turned clockwise, compress rubber washers between the fittings and the motor.
Hand tight to seal.
Its connected to the pump using a short length of 15mm pipe between two compression joints.

15mm to 10mm ball valve
Connected to the motor by a short length of 15mm copper pipe is a valve that regulates flow and also acts as a reducer
The pump should be opened up full for a few seconds, fully closed, and then partially opened. You are looking to slow the flow to a slow trickle (1.5 litres a minute)

Two metres of 10mm Hep200 Polybutylene Plastic Pipe
Cut an coiled together with two plastc inserts

15mm x 22mm x 22mm compression tee plus 15mm to 10mm reducer
Cut in the compression tee after cutting the 22mm copper pipe with a pipe slice and use the compression tee and one of the plastic pipe stifners to fit the 10mm pipe,