Installation manual

13
TWIN FLOW GAS PIPEWORK
The gas pipe work for the Twin Flow should be sized for the total system gas
consumption in accordance with British Standards. Due to the flow switch the
maximum gas consumption of the standard Twin Flow system is 54 kW (5.05 m
3
/hr.)
This is based on the E32S 32kW boiler and a 26i water heater. If a larger or smaller
water heater is used it will alter this gas rate.
The correctly sized gas supply pipe should be run to the Twin Flow. Near the Twin
Flow the gas pipe can branch off to the boiler and water heater in 22mm or 3/4inch
pipe. Each appliance must have an isolating valve (supplied with the Twin Flow) and
union connection for removal of the appliance.
Water Heater Boiler
Gas Pipe