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149
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(3) General
3-1) The following information shall be specied in the manual where the information is needed for the function of the manual
and as applicable to the appliance:
(a) Information for spaces where refrigerant pipes are allowed, including statements
• that the installation of pipe-work shall be kept to a minimum;
• that pipe-work shall be protected from physical damage and, in the case of ammable refrigerants, shall not be in
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stalled in an unventilated space, if that space is smaller than Amin in Annex GG;
•
that compliance with national gas regulations shall be observed;
• that mechanical connections made in accordance with 22.118 shall be accessible for maintenance purposes;
• that, for appliances containing ammable refrigerants, the minimum oor area of the room shall be mentioned in the
form of a table or a single gure without reference to a formula;
(b) The maximum refrigerant charge amount (M);
(c) The minimum rated airow, if required by Annex GG;
(d) Information for handling, installation, cleaning, servicing and disposal of refrigerant;
(e) The minimum oor area of the room or the special requirements for the room in which an appliance containing amma
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ble refrigerants can be located as dened in Annex GG, except where the refrigerant charge (M) is less than or equal to
m1 (M ≤ m1);
(f
) A warning to keep any required ventilation openings clear of obstruction;
(g) A notice that servicing shall be performed only as recommended by the manufacturer.
3-2) Qualication of workers
Every working procedure that affects safety means shall only be carried out by competent persons according to Annex HH.
Examples for such working procedures are:
– Breaking into the refrigerating circuit;
– Opening of sealed components;
– Opening of ventilated enclosures.
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