Ideal Boilers Atlantic 24 Release note

combination boilers
THESE INSTRUCTIONS TO BE RETAINED BY USER
INSTALLATION & SERVICING INSTRUCTIONS
For User Guide see reverse of book
UIN 223483 A01
August 2019
THESE INSTRUCTIONS TO BE RETAINED BY USER

2
Installation and Servicing
ERP DATA
 
MODEL
SYMBOL UNITS 24 30 35
Condensing Boiler n/a n/a yes yes yes
Low Temperature Boiler n/a n/a no no no
B1 Boiler n/a n/a no no no
Cogeneration Space Heater n/a n/a no no no
Equipped with a Supplementary Heater n/a n/a no no no
Combination Heater n/a n/a yes yes yes
Nominal Heat Output for Space Heating
Full Load P4kW 24.3 24.3 24.3
Part Load P1kW 8.0 8.0 8.0
Auxiliary Electricity Consumption
Full Load elmax kW 0.042 0.032 0.029
Part Load elmin kW 0.012 0.013 0.013
Standby PSB kW 0.003 0.003 0.003
Seasonal Space Heating Energy Efciency
Full Load ƞ4% 90.0 90.0 90.0
Part Load ƞ1% 98.6 98.6 98.6
Standby Loss Pstby kW 0.050 0.050 0.050
Ignition Pign kW 0 0 0
Emissions Nox (Gross) NOx, pond Hs mg/kWh 28 25 30
Annual Energy Consumption QHE GJ 75 75 75
Sound Power Level, Indoors LWA dB 46 46 41
Domestic Hot Water
Qelec kWh 0.012 0.119 0.119
ƞWH % 77 76 77
Qfuel kWh 7.784 7.821 7.762
AEC kWh 26 26 26
AFC GJ 6 6 6

3
Installation and Servicing
ATLANTIC COMBI COMBINATION BOILER
Ideal Boilers
ERP DATA
SYMBOL UNITS MODEL
24 30 35
Condensing boiler Yes
Seasonal Space heating efciency class A
Rated heat output kW 24
Seasonal space heating energy efciency ƞs% 94*
Annual energy consumption QHE GJ 75
Sound power level, indoors LWA dB 46 46 41
Water heating energy efciency class A
Seasonal Space Heating Energy Efciency of the Boiler *%
Temperature control (from che of temperature control) %
Class I Class II Class III Class IV Class V Class VI Class VII Class VIII
1% 2% 1.5% 2% 3% 4% 3.5% 5%
PRODUCT FICHE
 
The energy efciency of the package of products provided for in this document may not correspond to its actual energy efciency once installed in a
building, as the efciency is inuenced by further factors such as heat loss in the products in relation to the building size and its characteristics
Collector Size
(in m2)
Tank Volume
(in m3)
Collector
Efciency
(in %)
Tank rating
A* = 0.95
A = 0.91
B = 0.86
C = 0.83
D-G = 0.81
Solar Contribution (from che of solar device)
Seasonal Space Heating Energy Efciency of Package TOTAL: A+B+C=
Seasonal Space Heating Energy Efciency Class of Package
= (‘III ’x + ‘IV ’ x ) x 0.9 x ( / 100 x = %
%
GG F E D C B A A+ A++ A+++
< 30% ≥ 30% ≥ 34% ≥ 36% ≥ 75% ≥ 82% ≥ 90% ≥ 98% ≥ 125% ≥ 150%
A
B
C

4
Installation and Servicing

5
Installation and Servicing
DOCUMENT AMENDMENTS
Relevant Installation changes implemented in this book from Mod Level............................. A01 (August 19)
Ideal Boilers reserve the right to vary specication without notice
FOR ANY TECHNICAL QUERIES PLEASE RING THE
ATLANTIC COMBI INSTALLER/TECHNICAL HELPLINE : 01482 498663
NOTE. BOILER RESTART PROCEDURE -
To restart the boiler press the restart button. The boiler will repeat the ignition sequence if a heat
demand is present.
NOTES FOR THE INSTALLER

6
Installation and Servicing

7
Installation and Servicing
CONTENTS
1 GENERAL.................................................................. 10
1.1 Introduction ................................................................ 10
1.2 Operation ................................................................... 10
1.3 Safe Handling............................................................. 10
1.4 Optional Extra Kits ..................................................... 10
1.5 Safety ......................................................................... 11
1.6 Safe Handling Of Substances .................................... 11
1.7 Location Of Boiler ...................................................... 11
1.8 Gas Supply................................................................. 12
1.9 Flue Installation .......................................................... 12
1.10 Air Supply................................................................... 13
1.11 Water Circulation System........................................... 13
1.12 Boiler Control Interlocks ............................................. 13
1.13 Electrical Supply......................................................... 13
1.14 Condensate Drain .................................................... 13
1.15 Boiler Dimensions, Services & Clearances................ 14
1.16 System Requirements - Central Heating.................... 15
1.17 System Balancing ...................................................... 16
1.18 Water Treatment......................................................... 16
2 INSTALLATION ......................................................... 17
2.1 Boiler Assembly - Exploded View............................... 17
2.2 Unpacking .................................................................. 18
2.3 Unpacking Cont’d....................................................... 19
2.4 Front Panel Removal ................................................. 19
2.5 Wall Mounting Template ............................................. 20
2.6 Preparing The Wall..................................................... 20
2.7 Fitting The Wall Mounting Plate ................................. 20
2.8 Mounting The Boiler ................................................... 20
2.9 Determining The Flue Length
And Flue Packs Required ......................................... 21
2.10 Determining The Flue Length
And Flue Packs Required, Cont’d ............................. 22
2.11 Cutting & Setting The Flue Length ............................. 23
2.12 Installing The Flue...................................................... 24
2.13 Fitting The Optional Roof Flue Kit (Flat Or Pitched)... 25
2.14 Roof Flue Kit Contents / Options................................ 25
2.15 Flue Terminal Position................................................ 26
2.16 Assembling The Roof Flue Kit.................................... 27
2.17 Condensate Drain ...................................................... 28
2.18 Connections & Filling ................................................. 30
2.19 Electrical Connections................................................ 31
2.20 Internal ...................................................................... 31
2.21 External Electrical Connections ................................. 31
2.22 Wiring Diagram .......................................................... 32
2.23 Commissioning And Testing ....................................... 33
2.24 Initial Lighting ............................................................. 34
2.25 General Checks ......................................................... 35
2.26 Restart Procedure ...................................................... 36
2.27 Handing Over ............................................................. 36
3 SERVICING ............................................................... 37
3.1 Servicing .................................................................... 37
3.2 Boiler Upper & Lower Front Panel Removal /
Replacement .............................................................. 38
3.3 Fan And Venturi Assembly Removal And Cleaning.... 38
3.4 Burner Removal And Cleaning................................... 39
3.5 Cleaning The Condensate Trap/Siphon .................... 39
3.6 Cleaning The Heat Exchanger ................................... 40
3.7 Reassembly ............................................................... 40
3.8 Replacement Of Components.................................... 41
3.9 Fan Replacement....................................................... 41
3.10 Burner Injector Replacement ..................................... 42
3.11 Burner Replacement .................................................. 42
3.12 Ignition Electrode / Ionisation Detection Probe
Replacement .............................................................. 43
3.13 Spark Generator Replacement .................................. 44
3.14 Gas Control Valve Replacement ................................ 44
3.15 Diverter Valve Actuator Replacement ........................ 45
3.16 Condensate Trap/Siphon Replacement ..................... 45
3.17 Main PCB Replacement............................................. 46
3.18 Replacing The Mechanical Timer............................... 47
3.19 Draining The Boiler .................................................... 47
3.20 DHW Flow Turbine Sensor Replacement .................. 48
3.21 Pressure Gauge Replacement................................... 48
3.22 Safety Relief Valve Replacement .............................. 49
3.23 Pump Automatic Air Vent Replacement ..................... 49
3.24 Diverter Valve Body Assembly Replacement ............. 50
3.25 DHW Plate Heat Exchanger Replacement ................ 50
3.26 Pump Head Replacement .......................................... 50
3.27 CH Water Pressure Switch Replacement .................. 51
3.28 DHW Filter & DHW Flow Regulator
Cleaning/Replacement............................................... 51
3.29 Flow Thermistor ........................................................ 52
3.30 Return Thermistor Replacement Replacement.......... 52
3.31 Heat Engine Renewal ................................................ 53
3.32 Expansion Vessel Recharging & Replacement.......... 54
3.33 Boiler Sealing Panel Seal Replacement .................... 54
4 FAULT FINDING ........................................................ 55
4.1 Fault Finding Chart Main Menu.................................. 55
4.2 ‘L1’ - Flow Temperature Overheat Lockout ................ 56
4.3 ‘L2’ - Ignition Lockout ................................................. 56
4.4 ‘LC’ - 5 Resets Within 15 Mins ................................... 57
4.5 ‘L6’ - False Flame Lockout ........................................ 57
4.6 ‘F1’ - Low Water Pressure.......................................... 57
4.7 ‘F2 Or Fn Or Ln’ - Flame Loss.................................... 58
4.8 ‘F3’ - Fan Fault ........................................................... 58
4.9 ‘L4 Or F4’ - Flow Thermistor Fault.............................. 59
4.10 ‘L5 Or F5’ - Return Thermistor Fault .......................... 59
4.11 F6 - Outside Sensor Fault .......................................... 60
4.12 F7 - Low Mains Voltage.............................................. 60
4.13 F8/L8 - Lockout Due To Parameter Fault ................... 60
4.14 F9/L9 - PCB Fault ...................................................... 60
4.15 No CH Operation But HW Works OK......................... 61
4.16 No HW But CH On ..................................................... 62
4.17 No Display.................................................................. 62
5 SPARE PARTS .......................................................... 63
6 FLUE & INTEGRITY CHECKS.................................. 69

8
Installation and Servicing
SECTION 1 - GENERAL
Note. Gas consumption is calculated using a
caloric value of 38.7 MJ/m3 (1038 Btu/ft3) gross
or 34.9 MJ/m3 (935 Btu/ft3) nett
To obtain the gas consumption at a different
caloric value:
a. For l/s - divide the gross heat input (kW) by
the gross C.V. of the gas (MJ/m3)
b. For ft3/h - divide the gross heat input (Btu/h)
by the gross C.V. of the gas (Btu/ft3)
c. For m3/h - multiply l/s by 3.6.
Key to symbols
GB = United Kingdom IE = Ireland (Countries of destination)
PMS = Maximum operating pressure of water
C13 C33 C53 = A room sealed appliance designed for connection via ducts to a
horizontal or vertical terminal, which admits fresh air to the burner
and discharges the products of combustion to the outside through
orices which, in this case, are concentric. The fan is up stream of
the combustion chamber.
I2H = An appliance designed for use on 2nd Family gas, Group H only.
* The value is used in the UK Government’s Standard Assessment Procedure (SAP) for energy rating of dwellings. The test data from
which it has been calculated have been certied by a notied body.
ATLANTIC COMBI 24 30 35
Gas supply 2H - G20 - 20mbar
Gas Supply Connection 15mm copper compression
Injector Size mm 4.15 4.65 4.9
Inlet Connection DHW 15mm copper tail
Outlet Connection DHW 15mm copper compression
Flow Connection CH 22mm copper compression
Return Connection CH 22mm copper compression
Flue Terminal Diameter mm (in) 100 (4)
Average Flue Temp-Mass Flow Rate (DHW) 63oC - 11g/s 68oC - 13g/s 73oC - 15g/s
CO2 Content (± 0.7) Max. DHW 9.5% 9.3% 9.5%
Min. CH 8.8% 8.8% 8.9%
Maximum Working Pressure (Sealed Systems) bar (lb/in2) 2.5 (36.3)
Maximum DHW Inlet Pressure bar (lb/in2) (kPa) 10.0 (145) (1000)
Minimum DHW Inlet Pressure* bar (lb/in2) (kPa) 0.8 (11.6) (80) 1.3 (18.9) (130) 1.3 (18.9)** (130
Minimum DHW Inlet Pressure to operate at 0.6bar system pressure All Model sizes 0.5 bar
Electrical Supply 230 V ~ 50 Hz.
Power Consumption W 96 98 107
Fuse Rating External : 3A Internal : T4H HRC L250 V
Water content CH litre (gal) 1.2 (0.26)
DHW litre (gal) 0.5 (0.11)
Packaged Weight kg 33.7 33.7 33.8
Maximum Installation Weight kg 29.9 29.9 30
Boiler Casing Size Height mm 700
Width mm 395
Depth mm 285
Table 1 - General Data
*Required for maximum ow rate. Boiler operates down to 2 l/min DHW delivery
** In areas of low water pressure the DHW restrictor can be removed
Max. Min.
Boiler Input : 24 30 35
Boiler Input ‘Q’ Nett CV kW 24.3 4.9 6.1 7.1
Gross CV kW 27.0 5.4 6.7 7.9
Gas Consumption m3/h 2.512 0.500 0.627 0.734
(ft3/h) (89) (17.8) (22) (25.9)
Boiler Output :
Non Condensing kW 24.2 4.8 6.1 7.1
70oC Mean Water temp.
Condensing kW 25.6 5.1 6.4 7.5
40oC Mean Water temp.
Seasonal efciency* SEDBUK 2005 91% 91.1% 91%
Seasonal efciency* SEDBUK 2009 89% 89% 88.9%
NOx Classication CLASS 6
24 30 35
Maximum DHW Input :
Nett CV kW 24.3 30.4 35.4
Gross CV kW 27.0 33.7 39.3
Gas Consumption m3/h 2.512 3.135 3.657
(ft3/h) (89) (111) (129)
Maximum DHW Output kW 24.2 30.3 35.3
DHW Flow Rate at 35º
Temp Rise
l/min
(gpm)
9.9
(2.2)
12.4
(2.8)
14.5
(3.2)
DHW Specic Rate l/min
(gpm)
11.5
(2.5)
14.5
(3.2)
16.9
(3.7)
Table 2 - Performance Data - Central Heating Table 3 - Performance Data - Domestic Hot Water

9
Installation and Servicing
SECTION 1 - GENERAL
Boiler size G.C. Appliance No.
(Benchmark No.)
24 47-349-81
30 47-349-82
35 47-349-83
Natural Gas only
Destination Country: GB, IE
Boiler Page
Make and model......................................................... 9
Appliance serial no. on data badge .......... Front Cover
SEDBUK No. %.......................................................... 8
Controls
Time and temperature control to heating ................. 31
Time and temperature control to hot water ............. 31
Heating zone valves................................................ n/a
TRV’s........................................................................ 13
Auto bypass ............................................................. 13
Boiler interlock.......................................................... 13
For all boilers
Flushing to BS.7593................................................. 16
Inhibitor .................................................................... 16
Central heating mode
Heat input...................................................to be calculated
For assistance see Technical Helpline on the back page
Page
Burner operating pressure ...................................... n/a
Central heating ow temp. ...........measure and record
Central heating return temp. ........measure and record
For combination boilers only
Scale reducer ........................................................... 16
Hot water mode
Heat input............................................to be calculated
Max. operating burner pressure .............................. n/a
Max. operating water pressure........ measure & record
Cold water inlet temp ...................... measure & record
Hot water outlet temp. ..................... measure & record
Water ow rate at max. setting........ measure & record
For condensing boilers only
Condensate drain..................................................... 28
For all boilers: complete, sign & hand over to customer
For GB, to comply with Building Regulations Part L1 (Part 6 in Scotland) the boiler should be tted in accordance with the
manufacturer’s instructions. Self-certication that the boiler has been installed to comply with Building Regulations can be
demonstrated by completing and signing the Benchmark Commissioning Checklist.
Before installing this boiler, read the Code of Practice sheet at the rear of this book.
BENCHMARK COMMISSIONING CHECKLIST DETAILS
NOTE TO THE INSTALLER: COMPLETE
THE BENCHMARK COMMISSIONING
CHECKLIST AND LEAVE THESE
INSTRUCTIONS WITH APPLIANCE
ATLANTIC COMBI

10
Installation and Servicing
SECTION 1 - GENERAL
1 GENERAL
1.1 INTRODUCTION
The Atlantic combi range of boilers are wall mounted, full
sequence, automatic spark ignition, low water content, fanned
ue, high efciency, condensing, combination gas boilers.
Note. Due to the high efciency of the boiler a plume of water
vapour will form at the terminal during operation.
Central heating (CH) output is fully modulating with a range of:
24 4.8 to 24.2kW
30 6.1 to 24.2kW
35 7.1 to 24.2kW
Instantaneous domestic hot water (DHW) output is also fully
modulating with a maximum of :
24 24.2kW
30 30.3kW
35 35.3kW
The boiler is supplied fully assembled with DHW plate heat
exchanger, diverter valve, circulating pump, pressure gauge,
safety valve and CH expansion vessel.
Variable CH and DHW temperature controls are tted on the user
control and the boiler features a DHW preheat facility.
The boiler includes as standard:
- Automatic bypass
- Boiler frost protection
- Daily pump and diverter valve exercise
- Mechanical 24hr timer
The boiler casing is of white painted mild steel.
The boiler temperature controls are visible located in the control
panel on the front of the boiler.
The heat exchanger is manufactured from cast aluminium.
The boiler is suitable for connection to fully pumped, sealed
heating systems ONLY. Adequate arrangements for completely
draining the system by provision of drain cocks MUST be provided
in the installation pipework.
Pipework from the boiler is routed downwards.
The boiler model and serial number can be located on the
bottom of the boiler casing, shown in Section 1.15 - Water & Gas
Connection Diagram.
1.2 OPERATION
With no demand for CH, the boiler res only when DHW is drawn
off, or periodically for a few seconds without any DHW draw-off, in
order to maintain the DHW calorier in a heated condition. This
only occurs if pre-heat on.
When there is a demand for CH, the heating system is supplied at
the selected temperature of between 30oC and 80oC, until DHW
is drawn off. The full output from the boiler is then directed via
the diverter valve to the plate heat exchanger to supply a nominal
DHW draw-off of
24 9.9 l/min at 35 oC temperature rise.
30 12.4 l/min at 35 oC temperature rise
35 14.5 l/min at 35 oC temperature rise
The DHW draw off rate specied above is the nominal that the
boiler ow regulator will give. Due to system variations and
seasonal temperature uctuations DHW ow rates/temperature
rise will vary, requiring adjustment at the draw off tap.
At low DHW draw-off rate the maximum temperature is limited to
65 oC by the modulating gas control.
The boiler features a comprehensive diagnostic system which
gives detailed information on the boiler status when operating, and
performance of key components to aid commissioning and fault nding.
1.3 SAFE HANDLING
This boiler may require 2 or more operatives to move it to its
installation site, remove it from its packaging base and during
movement into its installation location. Manoeuvring the boiler may
include the use of a sack truck and involve lifting, pushing and pulling.
Caution should be exercised during these operations.
Operatives should be knowledgeable in handling techniques when
performing these tasks and the following precautions should be
considered:
• Grip the boiler at the base.
• Be physically capable.
• Use personal protective equipment as appropriate, e.g. gloves,
safety footwear.
During all manoeuvres and handling actions, every attempt should
be made to ensure the following unless unavoidable and/or the
weight is light.
• Keep back straight.
• Avoid twisting at the waist.
• Avoid upper body/top heavy bending.
• Always grip with the palm of the hand.
• Use designated hand holds.
• Keep load as close to the body as possible.
• Always use assistance if required.
1.4 OPTIONAL EXTRA KITS
•Horizontal Flue Terminal - (1000mm long)
•Horizontal Flue Terminal - (600mm long)
•Horizontal Flue Terminal - (600mm long) Weather Protection
• Flue Extension Ducts (1000mm long)
• Flue Extension Ducts (2000mm long)
• Flue Extension Ducts (500mm long)
24-up to 9m
30-up to 8m
35-up to 6m
•90o Elbow Kit (maximum per installation)
24-up to 6 elbows
30-up to 6 elbows
35-up to 4 elbows
•45o Elbow Kit (maximum per installation)
24-up to 6 elbows
30-up to 6 elbows
35-up to 4 elbows
• Telescopic B Pack
• Raised Horizontal Flue Outlet Kit
• High Level Flue Outlet Kit
• Flue Deector Kit
• Balcony Flue Kit
• Soft Flue Kit
•Roof Flue Kit (to a maximum of 7.5m)
• Concentric Flue Screw Retaining Kit
• Weather Collar
• Adjustable Flue Support Bracket
•Flue Finishing Kit
• Stand-Off Kit
• Condensate Pump Kit
• DHW Expansion Vessel Kit
• Ideal Opentherm Wired Room Thermostat
• Weather Compensation Kit

11
Installation and Servicing
SECTION 1 - GENERAL
1.5 SAFETY
Current Gas Safety (installation and use) regulations or rules
in force:
The appliance is suitable only for installation in GB and IE and
should be installed in accordance with the rules in force.
In GB, the installation must be carried out by a Gas Safe
Registered Engineer. It must be carried out in accordance with
the relevant requirements of the:
• Gas Safety (Installation and Use) Regulations
• The appropriate Building Regulations either The Building
Regulations, The Building Regulations (Scotland), Building
Regulations (Northern Ireland).
• The Water Fittings Regulations or Water byelaws in
Scotland.
• The Current I.E.E. Wiring Regulations.
Where no specic instructions are given, reference should be
made to the relevant British Standard Code of Practice.
In IE, the installation must be carried out by a Registered Gas
Installer (RGII) and installed in accordance with the current edition
of I.S.813 “Domestic Gas Installations”, the current Building
Regulations and reference should be made to the current ETCI
rules for electrical installation.
Detailed recommendations are contained in the following British
Standard Codes of Practice:
BS. 5440:1 Flues (for gas appliances of rated input not
exceeding 70 kW).
BS. 5440:2 Ventilation (for gas appliances of rated input not
exceeding 70 kW).
BSEN. 12828 Heating Systems in buildings: Design for water
based heating systems.
BSEN 12831 Heating Systems in buildings: Method for
calculation of the design heat load.
BSEN 14336 Heating Systems in buildings: Installation and
commissioning of water based heating systems.
BS. 5546 Installation of gas hot water supplies for domestic
purposes (2nd Family Gases)
BS. 6798 Installation of gas red hot water boilers of rated
input not exceeding 70 kW.
BS. 6891 Low pressure installation pipes.
Health & Safety Document No. 635.
The Electricity at Work Regulations, 1989.
The manufacturer’s notes must NOT be taken, in any way, as
overriding statutory obligations.
IMPORTANT. These appliances are CE certicated for safety
and performance. It is, therefore, important that no external
control devices, e.g. ue dampers, economisers etc., are
directly connected to these appliances unless covered by
these Installation and Servicing Instructions or as otherwise
recommended by Ideal Boilers in writing. If in doubt please
enquire.
Any direct connection of a control device not approved by Ideal
Boilers could invalidate the certication and the normal appliance
warranty. It could also infringe the Gas Safety Regulations and
the above regulations.
1.6 SAFE HANDLING OF SUBSTANCES
No asbestos, mercury or CFCs are included in any part of the
boiler or its manufacture.
1.7 LOCATION OF BOILER
The boiler must be installed on a at and vertical internal wall,
capable of adequately supporting the weight of the boiler and any
ancillary equipment.
The boiler may be tted on a combustible wall and insulation
between the wall and the boiler is not necessary, unless required
by the local authority.
For electrical safety reasons there must be no access available
from the back of the boiler.
The boiler must not be tted outside.
Timber Framed Buildings
If the boiler is to be tted in a timber Framed building it should be
tted in accordance with the Institute of Gas Engineering document
IGE/UP/7:2006 - Edition 2.
Bathroom Installations
This appliance is rated IP20.
The boiler may be installed in any room or internal space, although
particular attention is drawn to the requirements of the current
IEE (BS.7671) Wiring Regulations and the electrical provisions
of the building regulations applicable in Scotland, with respect to
the installation of the boiler in a room or internal space containing
a bath or shower. For IE reference should be made to the current
ETCI rules for electrical installations and I.S. 813:2002.
If the appliance is to be installed in a room containing a bath or
shower then, providing water jets are not going to be used for
cleaning purposes (as in communal baths/showers), the appliance
must be installed beyond Zone 2, as detailed in BS.7671.
Compartment Installations
0.6m
Zone 0
Recessed
window
Zone 2
Ceiling
3G8913a
2.25m
Zone 1
A compartment used to enclose the boiler should be designed and
constructed specially for this purpose.
An existing cupboard or compartment may be used, provided that
it is modied for the purpose.
Braces for compartments must be easily removable for service access.
In both cases, details of essential features of cupboard /
compartment design, including airing cupboard installation, are to
conform to the following:
• BS 6798 (No cupboard ventilation is required - see ‘Air Supply’
for details).
• The position selected for installation MUST allow adequate
space for servicing in front of the boiler.
• For the minimum clearances required for safety and
subsequent service, see the wall mounting template and
Section 1.15. In addition, sufcient space may be required to
allow lifting access to the wall mounting plate.

12
Installation and Servicing
SECTION 1 - GENERAL
1.8 GAS SUPPLY
The local gas supplier should be consulted, at the installation
planning stage, in order to establish the availability of an adequate
supply of gas. An existing service pipe must NOT be used without
prior consultation with the local gas supplier.
The boiler MUST be installed on a gas supply with a governed
meter only.
A gas meter can only be connected by the local gas supplier or
by a Gas Safe Registered Engineer. In IE by a Registered Gas
Installer (RGII).
An existing meter should be checked, preferably by the gas
supplier, to ensure that the meter is adequate to deal with the rate
of gas supply required.
It is the responsibility of the Gas Installer to size the gas Installer
to size the gas installation pipework in accordance with BS6891.
Whilst the principle of the 1:1 gas valve ensures the boiler range
is able to deliver it’s full output at inlet pressures as low as 14mb,
other gas appliances in the property may not be as tolerant.
When operating pressures are found to be below the minimum
meter outlet of 19mb these should be checked to ensure this is
adequate for correct and safe operation.
Allowing for the acceptable pressure loss of 1mb across the
installation pipework, it can be assumed that a minimum permitted
operating pressure of 18mb will be delivered to the inlet of the
appliance. (Reference BS 6400-1 Clause 6.2 Pressure Absorption).
The external gas cock could further reduce the operating pressure
when measured at its test point. The pressure drop is relative to
the heat input to the boiler (kW), refer to graph below.
0
0.5
1
1.5
2
2.5
3
010 20 30 40 50
Pressure drop (mbar )
Heat Input to Boiler (kW)
Gas Cock Pressure Drop
IMPORTANT.
Ensure all gas valve connections are gas tight with a gas
soundness check up to the gas control valve.
Installation pipes must be tted in accordance with BS.6891. In IE
refer to IS.813:.
The complete installation MUST be tested for gas tightness and
purged as described in the above code.
1.9 FLUE INSTALLATION
Pluming will occur at the terminal so terminal positions where this
could cause a nuisance should be avoided.
The ue must be installed in accordance with the
recommendations of BS. 5440-1.
In IE refer to I.S. 813.
The following notes are intended for general guidance:
1. The boiler MUST be installed so that the terminal is exposed
to external air.
2. It is important that the position of the terminal allows the free
passage of air across it at all times.
3. Minimum acceptable spacing from the terminal to obstructions
and ventilation openings are specied in
Table 4.
4. Where the lowest part of the terminal is tted less than 2m
(6’6”) above a balcony, above ground or above a at roof
to which people have access then the terminal MUST be
protected by a purpose designed guard.
Terminal guards are available from boiler suppliers. (Ask for
TFC ue guard model no. K6 - round, plastic coated). In case
of difculty contact:
TFC Group. Tel. + 44 (0) 01732 351 680
Tower House, Vale Rise Fax. + 44 (0) 01732 354 445
Tonbridge. Kent TN9 1TB www.tfc-group.co.uk
Ensure that the guard is tted centrally.
5. The ue assembly shall be so placed or shielded as to prevent
ignition or damage to any part of any building.
6. The air inlet/products outlet duct and the terminal of the boiler
MUST NOT be closer than 25mm (1”) to combustible material.
Detailed recommendations on the protection of combustible
material are given in BS. 5440-1.
IMPORTANT. It is essential to ensure, in practice, that products
of combustion discharging from the terminal cannot re-enter the
building or buildings through any openings into the building such
as ventilators, windows, doors, or other sources of natural air
inltration, such as forced ventilation openings etc.
If products of combustion re-entry is identied or suspected this
should be immediately investigated and corrected following the
guidance provided in the current Gas Industry Unsafe Situation
Procedure.
The terminal assembly can be adapted to accommodate various
wall thicknesses. Refer to Section 1.15.
* Only one reduction down to 25mm is allowable per installation
otherwise BS5440-1 dimensions must be followed.
Flue Terminal Positions Min. Spacing*
1. Directly below, above or alongside an open
window, air vent or other ventilation opening. 300mm
2. Below guttering, drain pipes or soil pipes. 25mm*
BS5440-1 75mm
3. Below eaves. 25mm*
BS5440-1 200mm
4. Below balconies or a car port roof. 25mm*
BS5440-1 200mm
5. From vertical drain pipes or soil pipes. 25mm*
BS5440-1 150mm
6. From an internal or external corner or to a 25mm*
boundary alongside the terminal. BS5440-1 300mm
7. Above adjacent ground, roof or balcony level. 300mm
8. From a surface or a boundary facing the terminal. 600mm
9. From a terminal facing a terminal. 1,200mm
10. From an opening in a car port
(e.g. door or window) into dwelling. 1,200mm
11. Vertically from a terminal on the same wall. 1,500mm
12. Horizontally from a terminal on the wall. 300mm
Vertical Terminals
13. Above the roof pitch with roof slope of all angles. 300mm
Above at roof. 300mm
14. From a single wall face. 300mm
From corner walls. 300mm
15. Below velux window 2000mm
16. Above or side of velux window 600mm
Table 4 - Balanced Flue Terminal Position

13
Installation and Servicing
SECTION 1 - GENERAL
1.10 AIR SUPPLY
It is NOT necessary to have a purpose-provided air vent in the
room or internal space in which the boiler is installed. Neither
is it necessary to ventilate a cupboard or compartment in which
the boiler is installed, due to the low surface temperatures of the
boiler casing during operation; therefore the requirements of BS
6798, Clause 12, and BS 5440:2 may be disregarded.
1.11 WATER CIRCULATION SYSTEM
IMPORTANT.
A minimum length of 1 metre of copper pipe MUST be tted
to both ow and return connections from the boiler before
connection to any plastic piping.
The central heating system should be in accordance with BS.6798
and, in addition, for smallbore and microbore systems, BS.5449.
WATER TREATMENT - See Section 1.18.
1.12 BOILER CONTROL INTERLOCKS
Central heating systems controls should be installed to ensure
the boiler is switched off when there is no demand for heating, in
compliance with Building Regulations.
Heating systems utilising full thermostatic radiator valve control
of temperature in individual rooms should also be tted with a
room thermostat controlling the temperature in a space served by
radiators not tted with such a valve.
When thermostatic radiator valves are used, the space heating
temperature control over a living / dining area or hallway having
a heating requirement of at least 10% of the minimum boiler heat
output should be achieved using a room thermostat, whilst other
rooms are individually controlled by thermostatic radiator valves.
However, if the system employs thermostatic radiator valves on all
radiators, or two port valves, then a bypass circuit must be tted
with an automatic bypass valve to ensure a ow of water should
all valves be in the closed position.
1.13 ELECTRICAL SUPPLY
WARNING.
This appliance must be earthed.
Wiring external to the appliance MUST be in accordance with
the current I.E.E. (BS.7671) Wiring Regulations and any local
regulations which apply. For IE reference should be made to the
current ETCI rules for electrical installations.
The mains supply to the boiler and system wiring centre shall
be through one common fused double pole isolator and for
new heating systems, and where practical replacement boiler
installations, the isolator shall be situated adjacent to the
appliance.
1.14 CONDENSATE DRAIN
Refer to Sections 2.17 & 3.5
A condensate drain is provided on the boiler. This drain must be
connected to a drainage point on site. All pipework and ttings in
the condensate drainage system MUST be made of plastic - no
other materials may be used.
IMPORTANT.
Any external runs must be in accordance with BS 6798.
The drain outlet on the boiler is sized for standard 21.5mm
overow pipe. It is a universal tting to allow use of different
brands of pipework.

14
Installation and Servicing
SECTION 1 - GENERAL
3952.5 2.5
from case
700
Side flue
dim. A
285
155
DATA PLATE
CH FLOW
DHW OUTLET
COND. DRAIN
GAS INLET
DHW INLET
CH RETURN
PRV
Underside View - Dimensions to Wall
43.5 65 28.5 28.5 60.5 75 39.554.5
99 99
34
103
103103
WALL
1.15 BOILER DIMENSIONS, SERVICES & CLEARANCES
The boiler connections are made on the boiler bulkhead
ttings. Refer to Section 2.18.
The following minimum clearances must be maintained
for operation and servicing.
Additional space will be required for installation, depending
upon site conditions.
Side and Rear Flue
a. Provided that the ue hole is cut accurately, e.g. with a core
drill, the ue can be installed from inside the building where wall
thicknesses do not exceed 600mm. Where the space into which
the boiler is going to be installed is less than the length of ue
required the ue must be tted from the outside.
Installation from inside ONLY
b. If a core boring tool is to be used inside the building the space in
which the boiler is to be installed must be at least wide enough to
accommodate the tool.
Front clearance
The minimum front clearance when built in to a cupboard
is 5mm from the cupboard door but 450mm overall
clearance is still required, with the cupboard door open,
to allow for servicing.
* Bottom clearance
Bottom clearance after installation can be reduced to
5mm.
This must be obtained with an easily removable
panel to provide the 100mm clearance required for
servicing.

15
Installation and Servicing
SECTION 1 - GENERAL
General
1. The installation must comply with all relevant national and local
regulations.
2. The installation should be designed to work with flow
temperatures of up to 84 oC.
3. All components of the system must be suitable for a working
pressure of 3 bar and temperature of 110 oC. Extra care should
be taken in making all connections so that the risk of leakage
is minimised.
The following components are incorporated within the
appliance:
a. Circulating pump.
b. Safety valve, with a non-adjustable preset lift pressure of 3
bar.
c. Pressure gauge, covering a range of 0 to 4 bar.
d. An 8-litre expansion vessel, with an initial charge pressure
of 0.75 bar.
4. ‘Make-up’ Water. Provision must be made for replacing water
loss from the system, either :
a. From a manually lled ‘make-up’ vessel with a readily visible
water level. The vessel should be mounted at least 150mm
above the highest point of the system and be connected
through a non-return valve to the system, tted at least
150mm below the ‘make-up’ vessel on the return side of
the radiators. or
b. Where access to a ‘make-up’ vessel would be difcult, by
pre-pressurisation of the system.
The maximum cold water capacity of the system should
not exceed 143 litres, if not pressurized. However, if
the system is to be pressurized, the efciency of the
expansion vessel will be reduced and a larger vessel
(or smaller system volume) may be necessary. If the
capacity of the vessel is not considered sufcient for this,
or for any other reason, an additional vessel MUST be
installed on the return to the boiler.
Guidance on vessel sizing is given in table above.
5. Filling
The system may be lled by the following method:
Where the mains pressure is excessive a pressure reducing
valve must be used to facilitate lling.
a. Thoroughly ush out the whole system with cold water.
b. Fill and vent the system until the pressure gauge registers
1bar and examine for leaks.
c. Check the operation of the safety valve by raising the
water pressure until the valve lifts. This should occur
within 0.3bar of the preset lift pressure.
d. Release water from the system until the
minimum system design pressure is reached;
1.0 bar if the system is to be pre-pressurised.
Notes
a. The method of lling, relling, topping up or ushing sealed
primary hot water circuits from the mains via a temporary hose
connection is only allowed if acceptable to the local water
authority.
b. Antifreeze uid, corrosion and scale inhibitor uids suitable for
use with boilers having aluminium heat exchangers may be used
in the central heating system.
1.16 SYSTEM REQUIREMENTS - Central Heating
Water Flow Rate and Pressure Loss
Max CH Output kW 24.2
Water ow rate l/min 17.3
(gal/min) (3.8)
Temperature Differential oC 20
Head available for m.w.g. 3.4
system (ft.w.g.) (11.1)
Safety valve setting bar 3.0
Vessel charge pressure bar 0.5 to 0.75
System pre-charge pressure bar None 1.0
System volume Expansion vessel
(litres) volume (litres)
25 1.6 1.8
50 3.1 3.7
75 4.7 5.5
100 6.3 7.4
125 7.8 9.2
150 9.4 11.0
175 10.9 12.9
190 11.9 14.0
200 12.5 14.7
250 15.6 18.4
300 18.8 22.1
For other system volumes
multiply by the factor across 0.063 0.074
continued . . . . .
CH Return
6053
Hose unions
Mains
water supply
Temporary hose
(disconnect after filling)
Additional
stop valve
Double check valve
assembly
(note direction of flow)

16
Installation and Servicing
SECTION 1 - GENERAL
The boiler does not normally need a bypass but at least some
radiators on the heating circuit, of load of at least 10% of the
minimum boiler output, must be provided with twin lockshield
valves so that this minimum heating load is always available.
See note regarding thermostatic radiator valves on page 13.
Note. Systems incorporating zone valves which could completely
cut off the ow through the system must also include a bypass.
BALANCING
1. Set the programmer to ON. Close the manual or thermostatic
valves on all radiators, leaving the twin lockshield valves (on
the radiators referred to above) in the OPEN position.
Turn up the room thermostat and adjust the lockshield valve
to give an uninterrupted ow through the radiator.
These valves should now be left as set.
2. Open all manual or thermostatic radiator valves and adjust
the lockshield valves on the remaining radiators, to give
around 20oC temperature drop at each radiator.
3. Adjust the room thermostat and programmer to NORMAL
settings.
CENTRAL HEATING
The Atlantic combi range of boilers have an
ALUMINIUM alloy heat exchanger.
IMPORTANT.
The application of any other treatment to this
product may render the guarantee of Ideal Boilers
Invalid.
Ideal Boilers recommend Water Treatment in
accordance with the Benchmark Guidance Notes on
Water Treatment in Central Heating Systems.
If water treatment is used Ideal Boilers recommend
only the use of SCALEMASTER SM-1 PRO, FERNOX,
MBI, ADEY MC1, SENTINEL X100 or CALMAG CM100
inhibitors and associated water treatment products,
which must be used in accordance with the
manufacturers’ instructions.
DOMESTIC HOT WATER
In hard water areas where mains water can exceed
200ppm Total Hardness (as dened by BS 7593 Table
2) a scale reducing device should be tted into the
boiler cold supply within the requirements of the local
water company. The use of articially softened water,
however, is not permitted.
Ideal Boilers recommend the use of Fernox
Quantomat, Sentinel Combiguard, Calmag CalPhos
I scale reducing devices or Scalemaster In-line
Scale Inhibitor branded Ideal, which must be used in
accordance with the manufacturers’ instructions.
........ SYSTEM REQUIREMENTS - CONT
Domestic Hot Water
1. The DHW service must be in accordance with BS.5546 &
BS.6700.
2. Refer to Table 1 for minimum and maximum working
pressures. In areas of low mains water pressures the
domestic hot water regulator may be removed from the DHW
ow turbine cartridge. Refer to Section 3.20. The boiler will
require the ow rate to be set to obtain a temperature rise of
35
o
C at the tap furthest from the boiler.
3. The boilers are suitable for connection to most types of
washing machine and dishwasher appliances.
4. If the shower/mixer valve does not incorporate non-return
valves the following must be followed:
a. The cold inlet to the boiler is tted with an approved anti-
vacuum or syphon non-return valve.
b. Hot and cold water supplies to the shower are of equal
pressure.
5. Hard Water Areas
Where the water hardness exceeds 200mg/litre (200 ppm), it is
recommended that a proprietary scale reducing device is tted
into the boiler cold supply within the requirements of the local
water company.
I MPORTANT. Provision must be made to accommodate the
expansion of DHW contained within the appliance. If the DHW
inlet contains a back ow prevention device or non-return valve,
e.g. a water meter, then a mini expansion vessel should be
tted between the device and the boiler in the cold inlet pipe.
Cold water, rising main and pipework in exposed areas
need to be suitably lagged to prevent freezing.
Notes.
1. It is most important that the correct concentration of the water
treatment products is maintained in accordance with the
manufacturers’ instructions.
2. If the boiler is installed in an existing system any unsuitable additives
MUST be removed by thorough cleansing. BS 7593 details the steps
necessary to clean a domestic heating system.
3.
In hard water areas, treatment to prevent lime scale may be necessary -
however the use of articially softened water is NOT permitted.
4. Under no circumstances should the boiler be red before the system
has been thoroughly ushed.
For further information contact:
Fernox Cookson Electronics
Forsyth Road, Sheerwater, Woking, Surrey GU21 5RZ
[phone]
Sentinel Performance Solutions
The Heath Business & Technical Park
Runcorn, Cheshire WA7 4QX
Tel: [phone]
Scalemaster Water Treatment Products
Emerald Way, Stone, Staffordshire ST15 0SR
Tel: [phone]
Calmag Ltd.
Unit 3-6, Crown Works, Bradford Road,
Sandbeds, Keighley, West Yorkshire BD20 5LN
Tel: [phone]
Adey Professional Heating Solutions
Gloucester Road, Cheltenham GL51 8NR
Tel: [phone]
1.17 SYSTEM BALANCING
1.18 WATER TREATMENT

17
Installation and Servicing
SECTION 2 - INSTALLATION
2 INSTALLATION
2.1 BOILER ASSEMBLY - Exploded View
Note that item numbers are linked to the spares list
104 CH RETURN VALVE
105 CH FLOW VALVE
106 DHW INLET & OUTLET
108 PUMP HEAD
110 AIR VENT PUMP
111 DIVERTOR VALVE MOTOR
112 DIVERTOR VALVE BODY
113 PRESSURE RELIEF VALVE
114 PIPE - PRV OUTLET
115 PIPE - FLOW
116 PIPE - RETURN
117 PIPE - EXPANSION VESSEL
118 EXPANSION VESSEL
119 RETURN GROUP KIT
120 FLOW GROUP KIT
121 PLATE HEAT EXCHANGER
124 FLOW REGULATOR CARTRIDGE
127 FLOW SENSOR/TURBINE
128 RETURN THERMISTOR
131 WATER PRESSURE SWITCH
135 PRESSURE GAUGE
203 GAS COCK
204 PIPE - GAS INLET
205 GAS VALVE
206 PIPE - GAS INJECTOR
211 INJECTOR ASSEMBLY
214 VENTURI
215 FAN
217 BURNER
218 GASKET - BURNER
219 SUMP CLEAN OUT COVER
223 FLUE MANIFOLD
224 FLUE MANIFOLD TOP
227 CLAMP RETAINING FLUE TURRET
228 HOSE CONDENSATE INTERNAL
229 SIPHON TRAP
231 CONDENSATE OUTLET
CONNECTION
302 PCB
306 IGNITION ELECTRODE/
DETECTION PROBE
308 IGNITER UNIT
309 FLOW THERMISTOR
313 IGNITION LEAD
324 CONTROLS BOX LID
325 CONTROL BOX FRONT
326 MECHANICAL TIMER
332 LIGHT GUIDE
401 HEAT ENGINE
503 WALL MOUNTING BRACKET
504 FRONT PANEL
506 BRACKET - GAS VALVE
507 BRACKET - EXPANSION VESSEL
510 ACCESS FLAP
504
313
215
309
214
206
223
205
510
135
326 325
324
204
229
231
302
332
118
507
224
503
228
308
306
218
217
506
401
211
219
227
110
114
113
121
131
127
124
120
119
117
112
115
116
108
111
128
104
106
203
106
105
INSTALLATION

18
Installation and Servicing
SECTION 2 - INSTALLATION
HARDWARE PACK CONTENTS
Gas Valve Pack
1. Gas Cock
2. Valve - DHW
3. Valve - Return
4. Valve - Flow
5. Pipe - DHW Outlet
6. Nut - G 1/2"
7. Washer - Gas
8. Washer - DHW
9. Washer - CH
10. Screw
11. Wall Plug
12. Turret Clamp Screw (spare)
Fixings Pack
3
4
7
10
11
8
9
2
6
5
1
12
2.2 UNPACKING
The boiler is supplied fully assembled in Pack A. A telescopic or non-telescopic ue assembly for rear or side ue outlet in
Pack B is suppled as a separate order.
Unpack and check the contents.
IMPORTANT. To unpack the boiler:
Pack A Contents
A Boiler
B Hardware Bag
C Wall Mounting Plate
D These Installation/Users Instructions
E Wall Mounting Template
(located on internal protective packaging)
F Boiler Guarantee & Registration Pack
C
D
B
E
Boiler Guarantee
A
F
1. Remove outer sleeve
2. Remove top end support
3. Stand up the boiler with aid of base tray
4. Remove base tray ensuring bottom end
support is still in place.
INSTALLATION

19
Installation and Servicing
SECTION 2 - INSTALLATION
D
C
A
B
C
D
A
E
B
2.3 UNPACKING CONT’D
1. Lift the lower front panel access ap.
2. Unscrew the single xing screw, close the access ap to
retain the screws and hinge the lower front panel down into
the service position.
3. Remove the two upper front panel xing screws, lift the panel
and remove.
2
1
3
Pack B Contents Telescopic
A Telescopic Flue Terminal
B Flue Turret
C Rubber Terminal Wall Seal
D Screw
E Sealing Tape
Pack B Contents Non-Telescopic
A Flue Terminal
B Flue Turret
C Rubber Terminal Wall Seal
D Cutting Aid
Note. This ue system incorporates a removable ue outlet nose that utilises a push t location system. This enables the
installation of deector, high level or balcony outlet ue kits without the removal of the whole ‘B’ pack terminal. The appliance
must not be operated without the desired outlet nose correctly tted in place.
Note. Location dimples must be aligned with terminal mounting Frame.
2.4 FRONT PANEL REMOVAL
INSTALLATION

20
Installation and Servicing
SECTION 2 - INSTALLATION
“A” - See Diagram in
Frame 1
Extended centre line
155
(200)
3G9495
X
Section
through wall
Note. Check all of the hole
positions before drilling.
Side flue only
5" diameter hole
Rear flue only
5" diameter hole
The wall mounting template is located on the internal protective
packaging. The template shows the position of the xing and rear
ue centre holes for a standard installation
Care MUST be taken to ensure the correct holes are drilled.
1. Tape template into the required position, ensuring its squareness
by hanging a plumbline as shown.
2. If tting a side ue, extend the ue centreline onto the side by
155mm on a standard wall x or 200mm if using a stand-off
bracket.
3. Mark the following on to the wall:
a The selected group of wall mounting screw holes.
b. The centre position of the ue duct. Marking both the centre
and the circumference of the ue duct.
4. Remove the template plate from the wall.
2.5 WALL MOUNTING TEMPLATE
2.6 PREPARING THE WALL
IMPORTANT.
Ensure that, during the cutting operation, masonry falling
outside of the building does not cause damage or personal
injury.
1. Cut the ue hole (preferably with a 5” core boring tool),
ensuring that the hole is square to the wall.
Both wall faces immediately around the cut hole should be
at.
2. Drill 2 mounting holes (marked from template) with a 7.5mm
/ 8mm masonry drill and insert the plastic plugs, provided,
for the wall mounting plate.
3. Locate 2 No.14 x 50mm screws in the wall mounting plate
(one at each side, in any of the 3 holes provided at each
side) and screw home. Ensure mounting bracket is level.
2.7 FITTING THE WALL MOUNTING PLATE 2.8 MOUNTING THE BOILER
Screw the wall mounting plate to the wall using 2 wall plugs
(previously tted) with the 2 screws provided.
Choose one of the 2 sets of slots in left and right bank.
Ensuring that at least one of the screws is tted into a top slot
and the mounting bracket is level.
NOTE. ENSURE BOTTOM END
SUPPORT IS LEFT IN PLACE
1. Lift the boiler onto the wall
mounting plate (refer to the
Introduction section for safe
handling advice), locating it
over the two tabs.
2. Remove the bottom end
support packaging.
3. Ensure the plastic plugs are
removed from both the CH
and DHW connections.
3G9948
Example of fixing
INSTALLATION