Logic+ combi c 24 30 35 user guide



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2.
BOILER OPERATION
MIN
MAX
MIN
MODE
e
BOILER
OFF
MAX
Legend
A. Domestic Hot Water Temperature Knob
B. Central Heating Temperature Knob
C. Mode Knob
D. Boiler Status Display
E. Burner on Indicator
F. Central Heating Economy Setting
G. Pressure Gauge
A
G
D
E
B
F
C
Ignition Lockout Check Other Gas
Appliances Work
Restart Boiler
Restart Menu
Ignition Lockout If Fault Persists
Contact Installer
Restart Menu


5
OPERATION MODES
Winter Conditions - (Central Heating and Domestic Hot Water required)
Set the mode knob (C) ‘
’ (winter. The boiler will fire and supply heat to the radiators.
The domestic hot water preheat will operate with the preheat button set to ‘Preheat On’.
Summer Conditions - (Domestic Hot Water only required)
Set the mode knob (C) to ‘
’ (summer. Set the central heating demand on the external controls to OFF.
The domestic hot water preheat will operate with the preheat button set to ‘Hot Water On’.
Boiler Off
Set the mode knob (C) to BOILER OFF. The boiler mains power supply must be left onto enable frost protection (see Frost Protection).
PREHEAT - DOMESTIC HOT WATER
The domestic hot water heat exchanger within the boiler can be kept preheated to provide faster delivery of hot water at the tap. This is achieved by pressing the preheat button to “Preheat On”. The boiler will operate periodically fora few seconds to maintain the domestic hot water heat exchanger in a preheated condition. The average time period between operation is 90 minutes. This may vary considerably due to the surrounding ambient temperature of the boiler. The boiler will operate whenever there is a demand for domestic hot water. If standard hot water delivery is satisfactory set the preheat to
Preheat Off’.


Logic+ combi c 24 30 35user guide
Safetycurrent gas safety (installation & use)
Electricity supply
To start the boiler
Control of water temperature
Knob settingcentral heating radiator temperature (approx.)
Weather compensation
Filling position
Preventative solutions
Service request function
No hot water or
Boiler display message



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