Ariston 500 STD ProTech Instructions pour l'installation, l'entretien et le fonctionnement - Page 15

Parcourez en ligne ou téléchargez le pdf Instructions pour l'installation, l'entretien et le fonctionnement pour {nom_de_la_catégorie} Ariston 500 STD ProTech. Ariston 500 STD ProTech 34 pages. Unvented hot water storage cylinders

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The single common discharge pipe should be at least one pipe

size large than the largest individual discharge pipe to be

connected. If unvented hot water storage systems are installed

where discharges from safety devices may not be apparent i.e. in

dwellings occupied by the blind, infirm or disabled people,

consideration should be given to the installation of an

electronically operated device to warn when discharge takes

place.

Note: The discharge will consist of scalding water and steam.

Asphalt, roofing felt and non-metallic rainwater goods may be

damaged by such discharges.

Temperature & pressure

relief valve

Metal discharge pipe (D1) from

temperature & pressure relief valve,

to tundlsh.

Tundish

500mm Max

300mm

MIn

Metal discharge pipe (D2) from tundlsh

with continuous fall. See Table 2 and worked

example.

Discharge below

fixed grating,

(see page 10 for

alternative points

of discharge).

Fixed grating

Fig. 3.10

Trapped gulley

Table 2. Sizing of copper discharge pipe "D2" for common temperature valve outlet sizes.

Valve outlet size

Minimum size of

discharge pipe D1*

Minimum size of

discharge pipe D2*.

from tundlsh

Maximum

resistance allowed,

expressed as a

length of pipe (i.e.

no elbow or bends)

Resistance created

by each elbow or

bend

G 1/2

15mm

22mm

28mm

35mm

Up to 9m

Up to 18m

Up to 27m

0.8m

1.0m

1.4m

G3/4

22mm

28mm

35mm

42mm

Up to 9m

Up to 18m

Up to 27m

1.0m

1.4m

1.7m

G 1

28mm

35mm

42mm

54mm

Up to 9m

Up to 18m

Up to 27m

1.4m

1.7m

2.3m