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6A<br />

0 30<br />

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6A<br />

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6A<br />

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INFORMATION REQUIRED FOR INSTALLATION<br />

The calculation charts below show <strong>the</strong> minimum dimension (in cm)<br />

of <strong>the</strong> sides of a chimney with a square cross section, depending<br />

on its height (in m) for each type of GT 330/430/530 boiler with<br />

<strong>the</strong> connection of one, two or three boilers per chimney. If using<br />

tubing, its interior diameter will be equal to dimension A.<br />

These dimensions are given as a rough guide for a horizontal<br />

connection length between <strong>the</strong> nozzle and <strong>the</strong> chimney equal to<br />

5 m maximum, comprising a maximum of one 90° elbow and one<br />

T-vent. However, care must be taken to comply with prevailing<br />

(national or local) regulations.<br />

Note: Depending on <strong>the</strong> configuration of <strong>the</strong> chimney, it may be<br />

necessary to add a draft moderator to ensure a partial vacuum<br />

of zero at <strong>the</strong> boiler nozzle.<br />

➩ GT 330<br />

40 cm 35 cm 30 cm 25 cm 20 cm<br />

ØA<br />

35 cm<br />

30 cm 25 cm 20 cm 15 cm<br />

A<br />

30 cm 25 cm<br />

20 cm 15 cm 10 cm<br />

40 m<br />

A<br />

35<br />

30<br />

25<br />

20<br />

15<br />

10<br />

Chimney height in metres<br />

5<br />

GT330_F0021<br />

GT<br />

339<br />

338<br />

337<br />

336<br />

335<br />

334<br />

➩ GT 430<br />

80 75<br />

70 65 60 55 50 45 40 35 30 cm<br />

ØA<br />

65 60<br />

55 50 45 40 35 30 25 cm<br />

A<br />

47 45<br />

40 35 30 25 20 18 cm<br />

40 m<br />

A<br />

35<br />

30<br />

25<br />

20<br />

15<br />

10<br />

Chimney height in metres<br />

5<br />

GT430_F0003<br />

GT 430-14 430-13 430-12 430-11 430-10 430-9 430-8<br />

➩ GT 530<br />

80 cm 75 cm 70 cm 65 cm 60 cm 55 cm 50 cm 45 cm 40 cm<br />

ØA<br />

70 cm<br />

65 cm<br />

60 cm<br />

55 cm<br />

50 cm<br />

45 cm<br />

40 cm<br />

35 cm<br />

A<br />

55cm 50 cm 45 cm 40 cm 35cm 30 cm 25 cm<br />

40 m<br />

A<br />

GT<br />

825 530-25<br />

825 530-24<br />

825 530-23<br />

825 530-22<br />

825 530-21<br />

825 530-20<br />

825 530-19<br />

825 530-18<br />

825 530-17<br />

825 530-16<br />

825 530-15<br />

825 530-14<br />

825 530-13<br />

825 530-12<br />

825 530-11<br />

825 530-10<br />

825 530-9<br />

825 530-8<br />

825 530-7<br />

35<br />

30<br />

25<br />

20<br />

15<br />

10<br />

Chimney height in metres<br />

5<br />

GT530_F0003<br />

17

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