Infinity 780HD Instruction Manual

Instruction for user,
Installation &
Servicing
780HD
Keep this booklet for service log and future reference
IMPORTANT
This appliance is guaranteed for 12 months subject to conditions. The 5 year extended parts
warranty will only be valid if the annual service recommended in this manual has been
completed and appliance has been registered online.
Video guides found at http://www.charltonandjenrick.co.uk/infinity-set-up-guides/

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LT7185 Issue No 1 (04/17)
Contents
EXTENDED FIVE YEAR PARTS WARRANTY .............................................................................................................................. 1
Benchmark Scheme............................................................................................................................................................. 2
Introduction ....................................................................................................................................................................... 3
Consumer Protection Information.................................................................................................................................... 3
Lighting the Appliance & General Operation Of Control .............................................................................................. 5
Handset set up video........................................................................................................................................................ 5
Auto (Thermostatic) Control ............................................................................................................................................. 7
Menu features.................................................................................................................................................................... 8
Changing The Handset Batteries. .................................................................................................................................... 8
Cleaning the 780 HD Appliance ...................................................................................................................................... 9
Fuel Bed Layout ............................................................................................................................................................... 10
Birch Fuel bed .............................................................................................................................................................. 10
Walnut fuel bed............................................................................................................................................................ 17
Technical Specification .................................................................................................................................................. 24
Siting the Appliance ....................................................................................................................................................... 25
Installation of the Appliance.......................................................................................................................................... 33
Commissioning the Appliance ...................................................................................................................................... 42
Annual Service Requirement. ........................................................................................................................................ 46
Fault Finding Charts......................................................................................................................................................... 49
Wiring Diagram................................................................................................................................................................ 52
Maintenance ................................................................................................................................................................... 53
Short Spares List ............................................................................................................................................................... 56
Your Fire Years Parts Extended Warranty ...................................................................................................................... 57
Four Year Service Log Details......................................................................................................................................... 58
GAS FIRE COMMISSIONING CHECKLIST.......................................................................................................................... 59
Register Your 12 Month Warranty with Us Today .......................................................................................................... 60
EXTENDED FIVE
YEAR PARTS
WARRANTY
In order to validate your extended 5 years parts
warranty please read the Benchmark Scheme and
ensure your installer has filled in the appropriate
checklist.

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LT7185 Issue No 1 (04/17)
Benchmark Scheme
Charlton and Jenrick Ltd is a licensed member of the Benchmark Scheme which aims to
improve the standards of installation and commissioning of domestic heating and hot
water systems in the UK and to encourage regular servicing to optimise safety, efficiency
and performance. Benchmark is managed and promoted by the Heating and Hotwater
Industry Council. For more information and the full code of practice please visit
www.centralheating.co.uk
Please ensure that the installer has fully completed the Benchmark Checklist on the inside
back pages of the installation instructions supplied with the product and that you have
signed it to say that you have received a full and clear explanation of its operation. The
installer is legally required to complete a commissioning checklist as a means of
complying with the appropriate Building Regulations (England and Wales).
All installations must be notified to Local Area Building Control either directly or through a
Competent Persons Scheme. A Building Regulations Compliance Certificate will then be
issued to the customer who should, on receipt, write the Notification Number on the
Benchmark Checklist.
This product should be serviced regularly to optimize its safety, efficiency and
performance. The service engineer should complete the relevant Service Record on the
Benchmark Checklist after each service.
The Benchmark Checklist will be required in the event of any warranty.
It is a requirement that the gas fire is installed and commissioned to the manufacturer’s
instructions and the data fields on the commissioning checklist completed in full.
To instigate the guarantee, the gas fire needs to be registered with the manufacturer
within one month of the installation.
To maintain the guarantee, it is essential that the gas fire is serviced annually by a Gas
Safe registered engineer. The service details should be recorded on the Benchmark
Service Interval Record and left with the householder.

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LT7185 Issue No 1 (04/17)
780 HD USERS INSTRUCTIONS
Introduction
The 780 HD has been designed and tested to the requirements of EN 613 and is suitable for use in
Great Britain & Republic of Ireland.
780 HD incorporates a single gas valve which selects ignition pilot, with variable setting between
low and high setting and is operated via remote control hand device or optional smart app
device. This system is powered by mains electricity via pre-wired transformer plus supply cord.
Alternative power supply is available for users during mains interruptions.
The 780 HD incorporates a safety device in form of an Oxygen Depletion System, which
constantly monitors the oxygen in the room and will cause the fire to switch off if the oxygen
level reduces, for instance due to insufficient ventilation or a blocked flue.
Consumer Protection Information
As manufacturers and suppliers of heating products, we take every care to ensure that the
design and construction has to meet the general safety requirements when properly used and
installed. To this end, our products are thoroughly tested and examined before despatch.
Any alteration that is not approved by the manufacturer could invalidate the approval of the
appliances, operation of the warranty and could affect your statutory rights.
This appliance could contain some materials that could be interpreted as being injurious to
health. It is the users / installers responsibility to wear protective clothing when handling the
following materials. Artificial fuel, mineral wool, insulation material, refractory/ceramic fibres and
glass yarn. May be harmful if inhaled, may be irritating to skin, eye, nose and throat.
When disposing refractory / ceramic materials to keep dust to a minimum these materials should
be securely wrapped in polythene and clearly labelled “RCF waste”. These materials are not
classified as hazardous waste and should be disposed of at a site licensed for disposal of
industrial waste.

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LT7185 Issue No 1 (04/17)
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Important Information
The appliance is for use on Natural Gas (G20 @ 20mbar) only.
The Chimney or flue (unless new or previously used with a gas appliance) shall be swept before
installation if been used for solid fuel.
In Great Britain, the appliance must be installed by a competent person whose name appears
on the gas safe register. All Gas Safe engineers should possess an ID carrying the logo below.
In IE (Ireland), the appliance must be installed by a competent person and
installed in accordance with the current edition I.S 813 Domestic Installation.
The glass front of this appliance acts as a dress guard, conforming to BS 1945 (1997) however a
fireguard to BS6539 (1997) must be used to protect young children, the elderly or infirm.
The Appliance must not be used with the glass safety screen removed or if it is damaged or
cracked.
During initial “burn off”, an odour may be evident during the first few hours of use. This is due to
the surface coating on the metal work “burning off”. The odour produced is harmless and will
disappear after a short period of time.
During the normal operation of the fire some black staining may appear on some parts of the
fuel bed. This is quite normal. However, if excessive black staining occurs it may be due to the
fuel bed shapes laid incorrectly. This should be checked prior to contacting a service engineer.
Care must be taken to prevent any damage being caused to surrounding soft furnishing or
decoration. Many embossed vinyl coverings may become discoloured if placed too close to the
appliance. It is suggested that a sample of the proposed wall covering should be placed above
the appliance at its hottest point first. The appliance should then be run on high rate over a
couple of days
It is advised that this appliance is serviced annually as recommended by Gas Safe. This is more
likely to provide trouble-free operation and is a requirement of the extended warranty.
In GB (Great Britain) the fire does not normally require purpose built ventilation, but if for any
special reason purpose built ventilation is provided it should be checked periodically to ensure
freedom from obstructions.
In IE (Ireland) permanent ventilation must comply with the current edition of IS813.

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LT7185 Issue No 1 (04/17)
780 HD USERS INSTRUCTIONS
Lighting the Appliance & General Operation Of Control
Display overview
Press to awaken the handset from its dormant sleep mode at any time. Fig 1 shows the
display neutral, ready to turn on.
Turn on (start up).
Pressing and holding displays an “UNLOCK” graphic Fig 2 prompting the button to be
pressed simultaneously. Whilst both & are pressed a progress bar Fig 3 will complete. If
either button is released before the progress bar has completed the operation will cancel. Once
the progress bar has completed the handset will display the status of the fire (priming –ignition –
pilot –main burner) finishing at the fire “on” display screen Fig 4.
Handset set up video
http://www.charltonandjenrick.co.uk/handsetguide/

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LT7185 Issue No 1 (04/17)
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Flame height adjustment
Once the fire has been started the flame height can be decreased by moving your finger clock
wise or decreased moving your finger anti-clock wise using the selector wheel. Once the desired
flame level is set, remove your finger from the selector wheel to transmit your selection to the
receiver. Six flame levels and a pilot setting are selectable. Press whilst the display is active to
display the current flame level.
Turn off (shut down)
To turn the appliance off, press and hold down until the progress bar has completed. If the
is released before the progress bar has completed the operation will cancel.
Mode select
With the fire running on manual operation you can access three further “modes”. Press for
“mode”. Use the selection wheel to cycle through the three options, “Auto”, “Sleep” and
“Light”. Press to select “Auto” or “Sleep”
Sleep:- Use the selector wheel to choose from the available time range of 5 minutes to 1 hour 30
minutes. Once the desired countdown time has expired the appliance will turn off. By pressing
the button during the countdown will cancel the countdown timer if required.
Note: The handset contains a sensitive temperature measurement device. To achieve the best
thermostatic efficiency do not place the handset near the heat source, avoid covering, direct sunlight or
near a draft or open window etc. Place the handset at a midpoint in the room or area being heated. Allow
5-10 minutes for the handset to stabilize if subjected to extremes of temperature.

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LT7185 Issue No 1 (04/17)
780 HD USERS INSTRUCTIONS
Auto (Thermostatic) Control
Press to awaken the handset from its dormant sleep mode at any time.
Selecting auto control
The “auto” function can only be selected once the appliances has been started and initiated
into “manual” mode. Once in manual mode, press and release the button to enter the
“mode” options. Auto is the first option, press to enter auto mode.
Adjusting target temperature
Use the selection wheel to increase or decrease the temperature to the desired level, release
your finger from the wheel to transmit the target temperature (See Fig 5) to the receiver. The
“auto” function will now modulate the flame height to achieve your target temperature. The
selectable temperature range is 1 degree C to 29 degree C.
Cancelling auto function
Press to “end” and cancel the “auto” control. The handset will return to manual control.

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Menu features
The menu can be accessed by pressing and holding the button (approx. 5 seconds) until the
menu graphic completes (see fig 6). Use the selector wheel to highlight one of the available
options. Press to enter the required option.
Set clock
The handset clock has a dedicated 24 hour display. Use the selector wheel to firstly set the hours.
Press to change to minutes select. Use the selector wheel to change the minutes. Press the
button to alternate hours and minutes to make any other alterations. Finally, press the
button to save the clock setting.
Display
Temperature display units-use selector wheel to select either Celsius (degree C) or Fahrenheit
(degree F). Press the button to save selection.
Gas fire (pair code)
The device screen displays the current operating channel of the handset. To delete the channel
press & simultaneously or to return to the menu option.
Reset
To restore the handset back to its original factory setting select “reset” from the menu options.
Press - & - simultaneously to complete the reset command –to return to the menu options.
Changing The Handset Batteries.
The handset operates from four AAA 1.5V batteries. New alkaline batteries
are recommended. Do not mix new and old batteries. When inserting the
batteries, observe and position batteries according to the battery
compartment graphics (see Fig 7). When the batteries are inserted the
handset will attempt to pair.

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LT7185 Issue No 1 (04/17)
780 HD USERS INSTRUCTIONS
Cleaning the 780 HD Appliance
Ensure the appliance is cold before proceeding.
The outer metal work frame should be cleaned using a damp cloth.
To clean the glass panel, remove the two fixing covers and the four M4 nuts fixing the glass
clamp to the glass panel. (See Fig 8). With the nuts removed, pull the glass clamp clear of the
four studs. Finally lift the glass panel out of the bottom glass fixing.
Using a damp cloth and warm soapy water will remove a majority of stains. For more substantial
marking we recommend the use of ceramic hob cleaner. These are available from all leading
super markets. The brands of hob cleaner we have tested and found suitable are “Hob brite” &
“Bar Keepers Friend”. Ensure the glass is dry and re-assemble.
Note- Never operate the appliance when the glass panel is removed or broken. The glass may discolour quickly
when first installed, and it should be cleaned. This is due to the burning of the refractory fuel bed shapes.
To Clean the Pilot assembly. Remove the four M4 nuts and glass clamp (See Fig 8). Carefully lift
the glass panel from within the bottom location. Remove the log and bark chip shapes. Lift out
the air tray assembly from within the burner shelf.
The pilot is located on the right hand side of the appliance, remove any debris in or around the
pilot head and the aeration hole. This can be achieved using the nozzle of a vacuum cleaner. It
is advisable not to blow the debris within the pilot head or aeration hole as this may cause more
of a restriction and not rectify the problem.
Note-Take care when cleaning in this area so as not to damage the pilot assembly.
4 off glass fixing nuts
Fixing cover slides over the top of the fixing bracket and hooks over the back of the bracket

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Cleaning the fuel bed shapes. (Please refer to customer protection information on page 2 of this
booklet before cleaning or replacing any refractory materials).
The fuel bed components are delicate and they should be handled with great care. They can
be brushed very gently with a soft brush to remove dust or any deposits. A vacuum cleaner may
only be used after the loose components and moulded shapes have been removed from the
780 HD fire box.
It is important that all fuel bed shapes are positioned as shown in these instructions.
Fuel Bed Layout
Fuel bed lay out video can been found at:
http://www.charltonandjenrick.co.uk/780guide/
Birch Fuel bed
Firstly, place the air tray within the fire box shelf as shown.
The Log & bark shapes must be positioned in accordance to the following instructions to give
the correct flame picture & reduce the risk of glass staining.
Slide the log piece behind the burner
slots
Make sure not to cover the burner slots on the front burner

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LT7185 Issue No 1 (04/17)
780 HD USERS INSTRUCTIONS
Slide ceramic strip (L: 380mm W:10mm H: 15mm) in behind Centre
log piece and in front of the burner slots on the rear burner
Side on view
Slide air tray in to place make sure it is central

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LT7185 Issue No 1 (04/17)
780 HD USERS INSTRUCTIONS
Slide the LH base ceramic piece in to place
Slide R/H base ceramic in to place
Split the pack of Embaglow in half
Keep one half of the Embaglow for
annual service

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LT7185 Issue No 1 (04/17)
780 HD USERS INSTRUCTIONS
Stretch out half of the Embaglow like
a net
Lay the stretched out Embaglow along the front burner slots
avoiding going pass the cross lighting lug
Avoid getting the Embaglow fibers near the pilot as it is conductive
material

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LT7185 Issue No 1 (04/17)
780 HD USERS INSTRUCTIONS
Lay the Centre back log along the back of the rear burner making
sure it is in the Centre and this pattern shown is facing forward and
the flat edge is against the rear liner
Place the one log as shown

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Place the two log shapes as shown
Place the 1 log shapes as shown

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This Centre log must be in line
with the cross lighting lug on
the front Centre log
Place the 1 log shape as shown

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Walnut fuel bed
Place the final 2 log shapes as shown
Slide the Centre log shape behind the front burner
Avoid placing the Centre log over the burner slots

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LT7185 Issue No 1 (04/17)
780 HD USERS INSTRUCTIONS
Slide ceramic strip (L: 380mm W:10mm H: 15mm) in behind Centre
log piece and in front of the burner slots on the rear burner
Side on view
Slide air tray in to place make sure it is central and sitting flat

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LT7185 Issue No 1 (04/17)
780 HD USERS INSTRUCTIONS
Slide the LH base ceramic piece in to place
Slide R/H base ceramic in to place
Split the pack of Embaglow
in half
Keep one half of the Embaglow for
annual service