Viessmann Vitodens 100-W Installation And Service Instructions Manual page 14

Type wb1b, 7.9 to 35.0 kw wall mounted gas condensing boiler

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Table of Contents

Installation sequence

Mounting the boiler and making connections

Gas connection

(cont.)

1. Connect the gas shut-off valve to

connection A.

2. Carry out a tightness test.

Note

Only use suitable and approved

leak detection agents (EN 14291)

and devices for the tightness test.

Leak detection agents with unsuita-

ble constituents (e.g. nitrides, sul-

phides) can cause material dam-

age.

Remove leak detection agent resi-

dues after testing.

Please note

Excessive test pressure will

damage the boiler and the

gas train.

Max. test pressure

150 mbar. If a higher pres-

sure is required for tightness

tests, disconnect the boiler

and the gas train from the

main supply pipe (undo the

fitting).

3. Purge the gas line.

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Vitodens 100-w