Installation; General Instructions For Heating System; Gas Connection; Heating Side Connection - Vaillant atmocraft Installation And Maintenance Instructions Manual

5 Installation

5 Installation
5.1

General instructions for heating system

Caution!
Flush the heating system thoroughly before
connecting the appliance!
By doing that, residue such as welds, cinder,
hemp, putty, rust, rough dust and similar
substances are removed from the pipes.
Otherwise such substances can be deposited in
the appliance and cause damage.
5.2

Gas connection

The gas installation may only be established by an
authorised engineer. The legal directives and the local
regulations for gas supply companies must be observed.
The gas infeed line must be laid out in according with
local regulations, see Section 3.2.
Caution!
Make sure that the connection and gas pipes
are not under stress when installed to avoid
leakage in the heating installation or in the gas
connection!
• A gas ball valve with fire protection device should be
installed in the gas feed pipe to the unit. This must be
located in an easily accessible position.
• Bolt the gas pipe to the gas connection flange (2) with
a flat seal, see Figure 4.1. Insert a flat sealing nipple
into the gas pipe to provide a seal.
Caution!
The gas regulating block may be tested for
leakage only with a maximum pressure of
50 mbar!
Higher testing pressures can damage the gas
fitting.
• Check the gas connection with leak indicator spray for
leakage.
5.3

Heating side connection

• Connect the heating feed to the heating feed
connection (1), see Figure 4.1.
• Connect the heating return to the heating return
connection (3), see Figure 4.1.
• Fit the required isolation devices between the heating
installation and the boiler and fit the relevant safety
devices.
20
5.4

Electrical installation

5.4.1 Notes for electrical installation

Danger!
Risk of fatal electric shock from touching live
connections!
Before working on the appliance, turn off the
power supply and secure against restart.
The electrical connection must be done by a suitably
qualified heating engineer who is responsible for
complying with the existing standards and guidelines.
We specifically draw your attention to VDE Regulation
0100 and the regulations of the relevant EVU.
Vaillant gas boilers are fitted with ProE System
connection plugs for ease of wiring and are wired ready
for connection.
The mains infeed and all other connection cables (e.g. from
the heating pump) can be connected to the ProE System
plugs provided for the purpose (see Fig. 5.1 and 5.2).
Mains and small voltage cable (e.g. sensor feed)
must be physically separated and laid.
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