Daikin EHYKOMB33AA3 [7/108] Gas exhaust
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Daikin EHYKOMB33AA3 [7/108] Gas exhaust

Daikin EHYKOMB33AA3 [7/108] Gas exhaust
2 About the product
Installer reference guide
7
CHYHBH05+08AA + EHYKOMB33A
Daikin hybrid for multi heat pump – heat pump module
4P471761-1A – 2017.10
1.2.6 Gas
The gas boiler is factory‑set to:
▪ the type of gas quoted on the type identification plate or on the
setting type identification plate,
▪ the gas pressure quoted on the type identification plate.
Operate the unit ONLY with the gas type and gas pressure indicated
on these type identification plates.
Installation and adaptation of the gas system MUST be conducted
by:
▪ personnel qualified for this work,
▪ in compliance with valid gas installation related guidelines,
▪ in accordance with applicable regulations of the gas supply
company,
▪ In accordance with local and national regulations.
Boilers that use natural gas MUST be connected to a governed
meter.
Boilers that use liquid petroleum gas (LPG) MUST be connected to a
regulator.
The size of the gas supply pipe should under no circumstance be
less than 22mm.
The meter or regulator and pipe work to the meter MUST be
checked preferably by the gas supplier. This is to ensure that the
equipment works good and meets the gas flow and pressure
requirements.
DANGER
If you smell gas:
▪ call immediately your local gas supplier and your
installer,
▪ call the suppliers's number on the side of the LPG tank
(if applicable),
▪ turn off the emergency control valve at the meter/
regulator,
▪ do NOT turn electrical switches ON or OFF,
▪ do NOT strike matches or smoke,
▪ put out naked flames,
▪ open doors and windows immediately,
▪ keep people away from the affected area.
1.2.7 Gas exhaust
Flue systems must NOT be modified or installed in any way other
than as described in the fitting instructions. Any misuses or
unauthorized modifications to the appliance, flue or associated
components and systems could invalidate the warranty. The
manufacturer accepts no liability arising from any such actions,
excluding statutory rights.
It is NOT allowed to combine flue system parts purchased from
different suppliers.
1.2.8 Local legislation
See the local and national regulations.
Local regulations for UK
It is law that all gas appliances are installed by a gas safe registered
competent engineer and in accordance with the following
recommendations:
▪ Current Gas Safety (Installation and Use) Regulations
▪ All current building regulations
▪ Building Standards (Scotland) Consolidated
▪ This appliance MUST be installed in accordance with the Gas
(Safety and Use) Regulations, current Building Regulations,
Building Standards (Scotland), I.S.813 Installation of Gas
Appliances (Ireland), IEE Wiring Regulations (BS 7671), Health
and Safety Document No. 635 (Electricity at Work Regulations)
and Local Water Authority Bye Laws
▪ UK Water Regulations and Bye Laws
▪ Health & Safety
The installation MUST comply with the following British Standards
codes of practice:
▪ BS 5440: Flues and Ventilation for gas appliances of rated input
NOT exceeding 70kW (Part 1 Flues)
▪ BS 5440: Flues and Ventilation for gas appliances of rated input
NOT exceeding 70kW (Part 2 Air Supply)
▪ BS 5546: 2000 Installation of gas hot water supplies for domestic
purposes.
▪ BS 5549: 1990 Forced circulation hot water systems.
▪ BS 6700: 1997 Design, Installation, testing and maintenance of
services supplying hot water
▪ BS 6798: 2000 Specification for installation of gas fired hot water
boilers of rated input NOT exceeding 70kW
▪ BS 6891: 1998 Installation of low pressure gas pipe-work
installation up to 35mm (RI)
▪ BS 7593: 1992 Code of practice for treatment of water in heating
systems
▪ BS 7671: 2001 Requirements for electrical installations, IEE
Wiring regulations
▪ BS 7074: 1 Code of practice for domestic and hot water supply
▪ EN12828 Central heating for domestic premises
Potable water: all seals, joints and compounds (including flux and
solder) and components used as part of the secondary domestic
water system MUST be approved by WRAS.
2 About the product
Especially for UK:
The Benchmark Scheme
Benchmark places responsibilities on both manufacturers and
installers. The purpose is to ensure that customers are provided with
the correct equipment for their needs, that it is installed,
commissioned and serviced in accordance with the manufacturer’s
instructions by competent persons and that it meets the
requirements of the appropriate Building Regulations. The
Benchmark Checklist can be used to demonstrate compliance with
Building Regulations and should be provided to the customer for
future reference.
Installers are required to carry out installation, commissioning and
servicing work in accordance with the Benchmark Code of Practice
which is available from the Heating and Hotwater Industry Council
who manage and promote the Scheme. Visit http://
www.centralheating.co.uk for more information.
Approvals
British Gas Service listing:
EHYKOMB33AA*: G.C.N. 47-464-01
The product (hybrid system) is composed of two modules:

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