Cranborne THI 10-50c, Installation, Commissioning And Servicing Instructions

Page: 48 / 66

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COMMISSIONING
9 - FLAME SETTING
- After switching the boiler on:
- Check the flame control by disconnecting the
ionizing electrode:
- The boiler goes into safety mode after two ignition
attempts (display and
)
10- COMBUSTION PRODUCT CHECKING
- With the boiler switched on, check the
combustion (CO2/CO).
Refer to Chapter VII - GAS CONVERSION -
page 50.
LED (4 and 5) off: Summer mode
The boiler provides domestic hot water only
- Basic boiler model (without outside sensor and room
sensor)
• Auto mode is inaccessible
. The hot water temperature is set manually by
using the boiler potentiometers.
- Boiler with outside sensor only
• Auto mode is not activated,
. The hot water temperature is set manually on the
boiler potentiometer.
- Boiler with outside sensor and room sensor
• The hot water temperature Is set via the room sensor
QAA73.
LED (4 and 5) on: Auto winter mode
The boiler provides heating and domestic hot
water
Auto mode is active:
- Boiler with outside sensor only
• The heating starts up automatically and only when
the average outside temperature computed by the
LMU is below 19°C.
• The hot water temperature is set manually on the
boiler potentiometer.
- Boiler with outside sensor and room sensor
• The heating starts up automatically and only when
the average outside temperature computed by the
LMU is below 19°C.
• The heating and hot water temperatures are set via
the room sensor QAA73.
LED (4) on / LED (5) off: Auto summer mode
The boiler provides domestic hot water only
Auto mode is active:
- Boiler with outside sensor only
• The heating stops automatically and only when the
average outside temperature computed by the LMU
is below 19°C.
• The hot water temperature is set manually on the
boiler potentiometer.
- Boiler with outside sensor and room sensor
• The heating stops automatically and only when the
average outside temperature computed by the LMU
is below 19°C.
• The hot water temperatures are set via the room
sensor QAA73.
Display Description Consequences according to type of installation
auto
Function
FUN-03-0
auto
Function
FUN-04-0
auto
Function
FUN-05-0