Infinity 620 HD User guide

Instruction for user,
Installation &
Servicing
620 HD
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/
With Under Bed Light

P a g e | 1
LT 8125 Issue No 1
Contents
Benchmark Scheme............................................................................................................................................................. 2
Introduction........................................................................................................................................................................... 3
Consumer Protection Information ....................................................................................................................................... 3
Lighting the Appliance & General Operation of Control ................................................................................................. 5
............................................................................................................................................................................................ 5
Auto (Thermostatic) Control ............................................................................................................................................. 7
Menu features.................................................................................................................................................................... 8
Changing the Handset Batteries...................................................................................................................................... 8
Cleaning the 620 HD UBL Appliance................................................................................................................................... 9
Fuel Bed Layout................................................................................................................................................................... 10
Laying the base matrix and Embaglow........................................................................................................................ 10
Technical Specification...................................................................................................................................................... 16
Siting the Appliance ........................................................................................................................................................... 17
Installation of the Appliance .................................................................................................Error! Bookmark not defined.
Commissioning the Appliance.......................................................................................................................................... 29
Annual Service Requirement............................................................................................................................................. 33
Fault Finding Charts ............................................................................................................................................................ 35
Wiring Diagram................................................................................................................................................................ 38
Maintenance....................................................................................................................................................................... 39
Your Fire Years Parts Extended Warranty.......................................................................................................................... 47
Four Year Service Log Details......................................................................................................................................... 48
GAS FIRE COMMISSIONING CHECKLIST ............................................................................................................................. 49
Register Your 12 Month Warranty with Us Today .............................................................................................................. 50

P a g e | 2
LT 8125 Issue No 1
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.

P a g e | 3
LT 8125 Issue No 1
620 HD UBL USERS INSTRUCTIONS
Introduction
The 620 HD UBL has been designed and tested to the requirements of EN 613 and is suitable for
use in Great Britain & Republic of Ireland.
620 HD UBL 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 620 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 dispatch.
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 fibers 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.

P a g e | 4
LT 8125 Issue No 1
620 HD UBL USERS INSTRUCTIONS
Important Information
The appliance is for use on Natural Gas (G20 @ 20mbar) or LPG (G31 @ 37mbar).
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.

P a g e | 5
LT 8125 Issue No 1
620 HD UBL 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 (startup).
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/

P a g e | 6
LT 8125 Issue No 1
620 HD UBL USERS INSTRUCTIONS
Flame height adjustment
Once the fire has been started (after a period of 10 minutes) 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 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.
Light:- Use the selector wheel and scroll to the “light” option. An appliance back light can be
turned on or off by pressing the button.

P a g e | 7
LT 8125 Issue No 1
620 HD UBL USERS INSTRUCTIONS
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.
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.

P a g e | 8
LT 8125 Issue No 1
620 HD UBL USERS INSTRUCTIONS
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.

P a g e | 9
LT 8125 Issue No 1
620 HD UBL USERS INSTRUCTIONS
Cleaning the 620 HD UBL 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 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 two 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 center 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.
2 off glass fixing nuts

P a g e | 10
LT 8125 Issue No 1
620 HD UBL USERS INSTRUCTIONS
Cleaning the fuel bed shapes. (Please refer to customer protection information on page 3 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
620 HD UBL 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/620guide/
Laying the base matrix and Embaglow
EMBAGLOW IS SUPPLIED WITH NATURAL GAS APPLIANCES ONLY
Split the pack of Embaglow in half
Keep one half of the Embaglow for
annual service

P a g e | 11
LT 8125 Issue No 1
620 HD UBL USERS INSTRUCTIONS
Place the bark chippings over the cover plates at the side of the burner assembly. Scatter the
glass pieces over the burner assembly and scatter the forge embers along the back of the
firebox.
Place the center shape on the middle burner ensuring the rear leg is sitting flat.

P a g e | 12
LT 8125 Issue No 1
620 HD UBL USERS INSTRUCTIONS
Place the two corner pieces in place, tight against the sides and front.
Place the front log between the two previous logs as shown

P a g e | 13
LT 8125 Issue No 1
620 HD UBL USERS INSTRUCTIONS
Place the right hand log in position on the location pin and sitting on top of the burner tube
Place the Left hand log in position on the location pin and sitting on top of the burner tube

P a g e | 14
LT 8125 Issue No 1
620 HD UBL USERS INSTRUCTIONS
NATURAL GAS ONLY
Place the right hand log as shown resting on the support pin.

P a g e | 15
LT 8125 Issue No 1
620 HD UBL USERS INSTRUCTIONS
Place the left hand log as shown locating the hole on the underside over the location pin on the
previously placed log shape.

P a g e | 16
LT 8125 Issue No 1
620 HD UBL INSTALLATION INSTRUCTIONS
Model
Gas
CAT
Gas
Type
Working
Pressure
Front
Injector
Side
Injectors
Gas
Input
NOX
Class
Oxy
Pilot
Country
620 HD
UBL
I2H
Natural
Gas
20
mbar
Mrk
120
Mrk
120
6.5 KW
Gross
4
2900
NGR
GB, IE
I3P
LPG
37
mbar
Mrk
74
Mrk
72
6.1 KW
Gross
5
9264
SIT
GB, IE
Efficiency Class 1
Gas Inlet Connection Size 8mm
Handset Replacement Batteries 4 x AAA 1.5V
Power Supply Type Plug –Input : 100-240 VAC 50/60 Hz, 0.2A
Note : The efficiency of the appliance has been measured as specified in BS7977-1 2009+
A1:2013 and the net efficiency rate is 74.6% for natural gas and 74.5% for LPG. The gross calorific
value of the fuel has been used for this efficiency calculation. Gastec have certified the test
data from which it has been calculated. The efficiency value may be used in the UK
Government’s Standard Assessment Procedure (SAP) for energy rating of the dwelling. Within the
appliance packaging will be an outlet restrictor, this is there to achieve the maximum efficiency.
This, however may not be fitted due to the flue underperforming.
Technical Specification

P a g e | 17
LT 8125 Issue No 1
620 HD UBL INSTALLATION INSTRUCTIONS
Packaging Check List
1 x Glass Panel
1 x Air Tray Assembly
1 x Boxed Fuel Bed
1 x Transformer Plug
1 x Battery Holder
1 x Emergency Power Battery Adaptor
1 x RF Handset
4 x AAA 1.5V Batteries
Siting the Appliance
Regulation and warnings
This appliance must only be installed in Great Britain and Eire.
The appliance is suitable for use on natural gas or LPG.
When fitted in the GB the fire does not normally require purpose provided ventilation
In GB it is the law that all gas appliances must be installed by a competent person GAS SAFE
registered installer, in accordance with the Current Gas Safe (installation and user) Regulations.
All relevant parts of the local and national building regulations and all relevant
recommendations of the following British standards. Failure to do so could lead to prosecution.
The following are relevant codes of practice and British Standards:-
B.S 5871
B.S 5440 Part 1 & Part 2
B.S 6891
This appliance must be installed to current versions of the above standards and include any
relevant amendments to:-
The building regulations issued by the department of the environment.
The building standards (Scotland) (Consolidated) Regulations issued by the Scottish
development office.
Eire the appliance must be installed by a competent person and installed in accordance with
the current edition of I.S 813 document gas installation, the current building regulations and the
current ETCI rules for electrical installation, if appropriate.

P a g e | 18
LT 8125 Issue No 1
620 HD UBL INSTALLATION INSTRUCTIONS
Prior to installation ensure that the local distribution conditions (identification of the type of gas
and pressure) and adjustment of the appliance are compatible G20 @ 20 mbar or G31 @ 37
mbar.
The front of the fire act as a dress guard, conforming to BS 1945 (1971) and satisfies the heating
appliance regulations (1991). However, a guard conforming to BS6539 (1984) must be used to
protect young children, the elderly or infirm.
This appliance incorporates a safety device in form of an oxygen depletion system. It must not
be adjusted or put out of operation. This is a non –serviceable item and must be exchanged as
a complete assembly using only the original manufacturer’s part.
A suitable proprietary fire surround with a 150 degree C minimum rating is required.
Class One
That is a conventional brick or stone chimney as used for a solid fuel appliance with an effective
cross sectional dimension of 225 x 225mm or a lined flue with a minimum diameter of 125mm.
The chimney must have a minimum effective height of at least 3 metres. Any permanent flue
restriction or variable damper are to be removed or locked fully open. The chimney should be
swept prior to installation if it has previously been used with a gas appliance or if it is a new
installation.
The 620 HD is designed to be fitted into a class one flue with a fire place which will require a
50mm rebate. The other option is hole in the wall which can be plastered up to the edge of the
fire place frame or fitted with wall mounted non-combustible slips. The two methods will require
different size apertures.
Builder’s opening aperture size when fitted in conjunction with a 50mm rebated surround
620 HD
Min
Max
A
605
740
B
735
770
C
330
NA

P a g e | 19
LT 8125 Issue No 1
620 HD UBL INSTALLATION INSTRUCTIONS
Open the firebox aperture as of the sizes stipulated in the previous section (50mm rebated
surround). Please note the fire box height from the floor may well vary dependent on the
fireplace surround design. Check the fireplace details first. Slide the fire box back into the
catchment area and secure the fire box against the front face of the chimney breast. Fit the fire
place frame to the fire box flange. The fireplace surround can now be constructed.
The 620 HD can be installed using three different methods when going hole in the wall.
A- Hole in the wall using none combustible slips.
B-Dry lined hole in the wall.
C-Wet plaster hole in the wall.