Checking The Gas Rate; Gas Rate Testing; Checking For Leaks During Operation; Domestic Hot Water - Worcester Greenstar i System ErP Series Installation, Commissioning And Servicing Instructions

6.5.3

Checking the gas rate

▶ The gas rate should be measured at the gas meter after the appliance
has been operating for a minimum of 10 minutes at maximum output.
▶ See Technical data section on page 8 of this manual for gas rates and
CO/CO ratios.
2
▶ Where a gas meter is not available (e.g. L.P.G.) the CO/CO
checked.
▶ Gas rate must be checked with the appliance in service, maximum
output mode.
6.5.4

Gas rate testing

Maximum output mode
▶ The diverter valve will go to mid position in chimney
sweep mode. A hot water outlet can be opened to
prevent the appliance from shutting down due to high
temperature during testing.
▶ Ensure all other gas appliances are isolated.
▶ Set the appliance to maximum output by pressing the
for at least 5 seconds.
The chimney sweep symbol
screen and the word "Max" will flash at the bottom of the screen. The
appliance will ramp up to maximum output in 30 to 35 seconds.
▶ Ensure that the appliance has stabilised at maximum output.
▶ Carry out Gas rating procedures as described in current edition of the
"Essential Gas Safety".
▶ If pressure and gas rate are satisfactory press the reset or return
button and the appliance will return to normal operation.
– If left in the service mode the control will return to normal
operation after 15 minutes.
6.5.5

Checking for leaks during operation

▶ Use an approved leak detector to check all connections for possible
leaks. The product must be certified as a gas leak testing agent.
▶ Do not allow the product to come into contact with the electrical
wiring.
6.5.6

Domestic hot water

Controlling the hot water temperature (optional integral diverter
valve kit fitted):
The hot water temperature can be set to between approximately 40°C
and 60°C using the DHW temperature control.
Domestic hot water pre-heat (optional integral diverter valve kit
fitted):
Pre-heat reduces the time taken to produce hot water at the tap and is
controlled by the ECO button (
▶ Press the button to select either state:
– When Pre-Heat is displayed, the appliance will be in pre-heat
mode (the hot water cylinder temperature will be maintained
around the setpoint).
– When ECO is displayed the appliance will be in Economy mode
and Pre-Heat will be off.
Greenstar i System - 6 720 806 945 (2015/07)
ErP
must be
2
button
will be displayed at the top of the
).
Commissioning
41