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MIRA SYSTEM 24 CF
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Chaffoteaux MIRA SYSTEM 24 CF [5/20] Installation requirements

4.1 REGULATIONS

PRIVATE HOMES

STATUTORY REQUIREMENTS FOR INSTALLATION AND

MAINTENANCE

Installation and maintenance of the equipment must be car-

ried out by a qualified professional in accordance with cur-

rent legislative texts and state of the art, including:

- law of 2 August 1977

Technical and Safety rules applicable to combustible gas

and liquefied gas petroleum installations located inside

buildings or outbuildings

- law of 5 February 1999 modifying the law of 2 August

1977

after replacing a boiler with an identical one (same align-

ment and area as the previous equipment), the installer

must make out a "model 4" certificate of conformity

- Standard DTU P 45-204 -

gas installations (previously DTU N°61-1 - Gas

Installations - April 1982 + additional clause N°1 of July

1984)

- Regional Health Regulations

Protection of the drinking water network:

• articles 16-7 and 16-8 of the Regional Health Regulations

require the installation to have a CB type disconnection

device with various non-controllable pressure zones,

conforming to the functional requirements of French

Standard NF P 43-011, to prevent heating water being

returned to the drinking water network

• an NF backflow preventer is fitted in the boiler's tap fit-

tings unit

• French Standard NF C 15-100 - Low voltage electrical

installations - Rules

PUBLIC BUILDINGS

STATUTORY REQUIREMENTS FOR INSTALLATION

Installation and maintenance of the equipment must be car-

ried out by a qualified professional in accordance with cur-

rent legislative texts and state of the art, including:

- fire safety and panic control regulations for public

buildings:

a) General requirements

for all equipment:

• GZ articles

Combustible gas and liquefied gas petroleum installa-

tions

• CH articles

heating, ventilation, refrigeration, air conditioning, steam

and domestic hot water production

b) Special requirements for each type of building with

public access (hospitals, shops, etc.)

Recommendation:

if the area is exposed to the risk of lightning (isolated ins-

tallation at the end of an electricity line, etc.) install a light-

ning conductor

Our warranty is subject to this requirement.

4.2 BOILER LOCATION

- install the boiler near a duct for removing the

products of combustion

- never install the boiler above hot-plates or ovens or in

general over any equipment producing greasy vapours

which could make the boiler dirty and affect its operation

- prepare a wall and mountings able to support the weight of

the boiler (weight: approx. 35 kg)

- take precautions to reduce noise

4.3 DESIGNING AND CARRYING OUT THE INSTALLA-

TION

Domestic hot water circuit (system plus)

- Avoid excessive loss of charge in preheating circuit

- if the water hardness is more than TH 25, install a water

softener

- if a non-return valve is present, a device allowing for

expansion is required (available as an option)

See domestic hot water technical directive (DTU)

Central heating circuit

Circulation flow rate:

- when working out the measurements, be careful to main-

tain a minimum flow rate of 300 l/h, with the thermostats

closed

Precautions against corrosion

Operating faults due to corrosion are likely to occur if the

system is built with components made of different materials.

To prevent such problems it is advisable to use a corrosion

inhibitor.

Take every precaution to prevent the treated water from

becoming corrosive.

Old installation:

- fit a sediment trap to the lowest point on the backflow and

treat the system correctly

Recommendation:

- fit bleed valves on all radiators and to high points of the

installation; also fit drain cocks to low points

Evacuation of burnt gas

See DTU 24-6 and technical rules

This boiler must only be connected to a duct with a natural

draught

Connection is provided for fitting a 125 mm Ø pipe for 24

kW inside the outlet neck of the draught diverter.

Fit a drip pot to prevent any condensation from the chimney

falling into the boiler.

4. Installation requirements

Chaffoteaux MIRA SYSTEM 24 CF [5/20] Installation requirements

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