Operating Information Operating Tips; Required Water Properties; Commissioning; Systems With Operating Temperatures > 110 °C - Viessmann Vitomax LW Series Operating And Service Instructions

Operating information
Operating tips

Required water properties

The required water properties for the operation of
boiler and heating systems are specified in the "Stand-
ard values for water quality" chapter on page 11.

Commissioning

Note
Ensure that the installation room is well ventilated dur-
ing commissioning as there may be some odour nui-
sance.
Authorised to commission the boiler:
■ Viessmann Industrial Service (for contact details see
page 32) or
■ The system installer or
An approved contractor or institution nominated by
■
the system installer
Required for commissioning:
■ Presence of a competent expert authority
■ Completion of a test report
Required signatories:
■
System builder
–
Regulatory expert
–
– System user
■ The flue gas inspector (where applicable) should be
notified of the commissioning within 4 weeks
Systems with operating temperatures
Category IV boiler systems compliant with Pressure Equipment Directive
Requirements for commissioning
■ System installation has official approval.
■ The system has been checked by an expert author-
ity.
■ Commissioning of the control system is carried out
by a qualified organisation.
Requirements for operators
Only qualified personnel may operate, supervise and
service the system.

Shutdown and preservation

Shutdown

Shutdown means shutting down the system via the cir-
cuit breaker at the control panel. The duration of the
shutdown determines the preservation measures
described in this chapter.
8
Recommended operating conditions to prevent
damage to the boiler system
Never interrupt boiler operation, even if no heat is
being drawn off temporarily
Maintain the following at all times
■ Water temperature: 70 °C
■ Specified operating pressure
Multi boiler systems with a boiler on permanent
standby:
Changeovers between heating and standby should be
infrequent, for example with each annual inspection of
the overall system.
110 °C
>
Requirements for operation without supervision
■ Boiler system is equipped in accordance with EN
12953, Part 6.
■ The system has received official approval for opera-
tion.
Checking system operation
Scope checks should be determined in accordance
with EN 12953-6
A short-term shutdown is not recommended, as every
start-up process subjects the boiler to additional
stresses. For a period of up to 72 hours, for example
over a weekend, the boiler should be left to continue
operating.