Commissioning The Boiler; Adjusting The Ch And Dhw Flow Temperature; Operating Modes - Potterton Sirius two WH Instruction Manual

1. COMMISSIONING THE BOILER

To light the boiler correctly, proceed as follows:
• Check that the system pressure is correct (section 6);
• Power the boiler;
• Open the gas tap;
• Select the required heating mode (section 1.2).
During initial ignition, the burner may not ignite (causing the boiler to shut down) until any air in the gas pipes is vented.
In this case, repeat the ignition procedure until gas reaches the burner. To reset boiler operation, press
seconds.
Key to BUTTONS
DHW temperature adjustment
(+ to increase the temperature and – to decrease it)
Heating water temperature adjustment
(+ to increase the temperature and – to decrease it)
Boiler operating information
Operating mode:
DHW – DHW & Heating – Heating Only
Off – Reset – Exit menu/functions
Key to SYMBOLS
Off: heating and DHW disabled
(only boiler frost protection is active)
Fault preventing the burner from lighting
Boiler/system water pressure low
Technical Service Centre call-in
Manually resettable fault (
Fault in progress

1.1 ADJUSTING THE CH AND DHW FLOW TEMPERATURE

Press and respectively to adjust the CH and DHW flow temperature (if an external storage tank is fitted). When the
burner is lit, the display shows the symbol .
HEATING: while the boiler is operating in the heating mode, the display shows the flashing symbol
temperature (°C).
When connected to an Outdoor Sensor,
DHW: connect an external storage tank to produce domestic hot water. While the boiler is operating in the DHW mode, the display
shows the flashing symbol

1.2 OPERATING MODES

SYMBOL
OPERATING MODE
DISPLAYED
DHW
DHW & HEATING
HEATING ONLY
)
will indirectly adjust the room temperature (factory setting 20°C).
and the heating flow temperature (°C).
To enable the appliance in DHW - Heating or Heating only press
and choose one of the three available modes.
To disable the boiler operating modes whilst keeping the frost function enabled,
press . Just the symbol
Burner lit
DHW operating mode enabled
Heating mode enabled
Programming menu
Boiler information menu
Set unit of measurement (SI/US)
appears on the display (with the boiler not blocked).
5
for at least 2
and the heating delivery
repeatedly
7108686.02 (1-11/12)