Daikin EHYKOMB33AA3 [7/44] Gas exhaust
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Daikin EHYKOMB33AA3 [7/44] Gas exhaust

Daikin EHYKOMB33AA3 [7/44] Gas exhaust
3 General safety precautions
Installation and operation manual
7
EHYKOMB33A
Daikin Altherma hybrid heat pump – gas boiler module
4P353067-1K – 2020.10
WARNING
▪ After finishing the electrical work, confirm that each
electrical component and terminal inside the electrical
components box is connected securely.
▪ Make sure all covers are closed before starting up the
unit.
NOTICE
Only applicable if the power supply is three‑phase, and the
compressor has an ON/OFF starting method.
If there exists the possibility of reversed phase after a
momentary black out and the power goes on and off while
the product is operating, attach a reversed phase
protection circuit locally. Running the product in reversed
phase can break the compressor and other parts.
3.2.5 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.
3.2.6 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.
3.2.7 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 5440-1: 2008 Flueing and ventilation for gas appliances of
rated input not exceeding 70 kW net (1st, 2nd and 3rd family
gases)
▪ BS 5440-2: 2009 Flueing and ventilation for gas appliances of
rated input not exceeding 70 kW net (1st, 2nd and 3rd family
gases)
▪ BS 5546: 2010 Specification for installation and maintenance of
gas-fired water-heating appliances of rated input not exceeding
70kW net
▪ BS 5549: 1990 Forced circulation hot water systems.
▪ BS 6700: 2006 + A1: 2009 Design, installation, testing and
maintenance of services supplying water for domestic use within
buildings and their curtilages - Specification
▪ BS 6798: 2014 Specification for selection, installation, inspection,
commissioning, servicing and maintenance of gas-fired boilers of
rated input not exceeding 70kW net
▪ BS 6891: 2015 Specification for the installation and maintenance
of low pressure gas installation pipework of up to 35mm (R1¼) on
premises
▪ BS 7593: 2006 Code of practice for treatment of water in domestic
hot water space heating systems
▪ BS 7671: 2018 Requirements for electrical installations. IET wiring
regulations
▪ BS 7074: 1 Code of practice for domestic and hot water supply
▪ EN12828: 2014 Space 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.

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