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Atmos Multi
ATMOS
Installation & Servicing Instructions
Atmos Heating Systems
West March
Daventry
Northants, NN11 4SA
Tel: 01327 871990
Fax: 01327 871905
internet: www.atmos.uk.com
MK2 Revised (M) 2.7.04
856364388.001.png 856364388.002.png 856364388.003.png
Table of Contents
Section
Page
Section
Page
8. Commissioning
30
Introduction
4
8.1 Filling the heating system
30
1. Installation Regulations
5
8.2 Filling the domestic hot
water system
31
2. General Information
5
3. Technical Data
6
8.3 Appliance operation
31
4. Schematic of Boiler
7
8.4 System balancing
32
5. Operation and construction
9
9. System Shutdown
33
9
5.1 Appliance construction
9.1 Central heating circuit
33
10
5.2 Operating principle
9.2 Domestic hot water
33
11
5.3 Controls and function
9.3 Draining the boiler
33
12
5.4 User's program
9.4 Disposal of appliance
33
6. Installation Requirements
12
10. Inspection & Servicing
33
12
6.1 Gas supply
10.1 Boiler pre-service inspection
33
12
6.2 Electrical supply
10.2 Auxiliary equipment
inspection
35
13
6.3 Flue terminal clearances
10.3 Servicing the boiler
35
13
6.4 Flue system
10.4 Completion of inspection and
servicing
37
15
6.5 Condensate disposal
6.6 Combined safety discharge &
condensate pipe
15
11. Component Replacement
37
12. Malfunctions
42
15
6.7 Std safety discharge pipes
17
6.8 Existing systems
Appendix.
7. Boiler Installation
17
17
7.1 Unpacking the boiler
1. Spare Parts List
2. Fault Finding
3. Appliance Guarantee
18
7.2 Minimum clearances
18
7.3 Boiler location
19
7.4 Wall mounting the boiler
20
7.5 Connecting the flue system
7.6 Connecting the central heating
circuit
21
22
7.7 Connecting the mains water
23
7.8 Wall Frame Assembly
7.9 Connecting the domestic hot
water supply
27
7.10 Hot water secondary
circulation.
27
27
7.11 Connecting the gas supply
7.12 Connecting the condensate
siphon
28
7.13 Connecting the electrical
supply
28
Page 3
ATMOS MULTI Mk 2 version 2004
Introduction
The Atmos Multi must be installed in accordance
with these instructions and the regulations
currently in force. Please read these instructions
fully before installation and leave with the boiler
for future reference.
Atmos Heating Systems accepts no responsibility
for unsatisfactory performance of the appliance or
flue arising from the failure to comply with these
installation instructions.
The Atmos Multi gas fired storage combination
boiler meets the requirements of Statutory
Instrument 'The Boiler (Efficiency) Regulations'
and is deemed to meet the requirements of:
Gas Appliance Directive 90/396 EEC
Efficiency Directive 92/42/ EEC
Low Tension Directive 73/23 EEC (modified
from 93/68) and;
Electromagnetic
Compatibility
Directive
89/396 EEC (modified from 93/68)
Atmos Heating Systems declare that the materials
used in the manufacturer of this appliance are
non-hazardous and that no substances harmful to
health are contained within the appliance.
On completion of installation the appliance must
be commissioned and the following explained to
the user:
The operating prin c iple of the appl i ance
The appl i ance controls and display
Starting up, f i lling and de-aerating the
appliance
Shutting down and draining
Annual inspection and maintenance
Atmos Heating Systems have a policy of
continuing improvement in the design and
performance of its products. The right is therefore
reserved to vary specifications without notice.
For advice or information contact Atmos Heating
Systems by telephone or e-mail.
Atmos Heating Systems is part of the
Benchmark scheme. All our boilers include
the Benchmark Logbook and we advise all our
installations to be carried out to Benchmark
standards.
Page 4
ATMOS MULTI Mk 2 version 2004
856364388.004.png
1. Installation Regulations.
2. General Information.
1.1 The appliance must be installed by a qualified
registered installer in accordance with the Gas Safety
(Installation and Use) Regulations; October 1994.
Failure to install appliances correctly could lead to
prosecution.
2.1 The Atmos Multi is a wall mounted, fully
automatic gas fired condensing combination boiler
designed to provide 'unvented' domestic hot water at
mains pressure via an integral hot water storage
cylinder.
1.2. The manufacturer instructions must not be taken
as overriding statutory requirements.
2.2 Classified as an 'Unvented hot water system', the
installation of the Atmos Multi falls within the scope
of the Building Regulations 1995 (Part G.). These
require that a competent person as defined in the
Approved Document G3 must only undertake the
installation of an unvented system.
1.3 The installation of this appliance must be in
accordance with the relevant requirements of the Gas
Safety (Installation and Use) Regulations 1984 as
amended, Building Regulations, Building Standards
(Scotland), lEE Wiring Regulations (BS 7671), Health
and Safety Document No.635 (Electricity at Work
Regulations) and local Water Authority bye laws.
2.3 For central heating applications the Atmos Multi is
suitable only for use on a fully pumped, pressurised,
sealed primary system with a design (cold) pressure of
between 0.5 and 2.5 bar.
1.4 Installation should also be in accordance with the
relevant recommendations contained within the current
versions of the following British Standards:-
2.4 The boiler may be installed in any room or internal
space without the need for purpose made ventilation,
although attention is drawn to the current IEE Wiring
Regulations with respect to installation in a room
containing a bath or shower. In such installations, it
must not be possible for a person using the bath or
shower to touch any mains electricity fed switch or
boiler control.
BS 6798 Specification for installation of gas fired
hot water boilers of rated input not exceeding 60
kW.
BS 5449 Central Heating for Domestic Premises.
BS 5546 Installation of gas hot water supplies for
domestic purposes.
BS 5440 Flues and Ventilation for gas appliances of
rated input not exceeding 60 kW. (Part 1 Flues).
BS 5440 Flues and Ventilation for gas appliances
of rated input not exceeding 60kw (Part 2 Air
Supply).
BS 6891 Installation of low pressure gas pipework
installations up to 28mm (R1).
Reference should also be made to British Gas
Guidance Notes for the Installation of Domestic Gas
Boilers.
2.5 In areas where the temporary hardness of the
supplied water exceeds 200mg/litre, a proprietary in-
line scale control device such as the 'Hydroflow'
(available from Atmos Heating Systems) should be
fitted in the cold feed to the boiler.
2.6 The Atmos Multi is suitable to accept pre-heated
water such as that supplied from solar panel
installations.
2.7 Where the boiler is intended for use on Propane
gas, the boiler must not be installed in a room or
internal space below ground level.
1.5. To ensure that the installation will perform to the
highest standards, the system and components should
conform to any other relevant British Standards in
addition to those mentioned in these instructions.
1.6. For Installation in Ireland, the appliance must be
installed in compliance with I.S.813 ‘Installation of gas
appliances’.
1.7. Asbestos and CFC’s are not used in the
manufacture of these products.
Page 5
ATMOS MULTI Mk 2 version 2004

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