Vaillant 0010020392, Installation And Maintenance Instructions Manual

Page: 30 / 56

30
Installation and maintenance instructions ecoFIT sustain 0020230529_05
10.3 Setting the bypass valve
Caution.
Risk of material damage caused by incor-
rect setting of the high-efficiency pump
If the pressure at the bypass valve is in-
creased (by turning it clockwise) and the
pump output is set to less than 100%, the
product may not operate correctly.
▶
In this case, set the pump output to
5 = 100% using diagnostics parameter
d.14 .
1. Remove the front casing. (
→
Page 16)
1
2. Regulate the pressure using the adjusting screw (1) .
Position of the adjusting
screw
Notes/application
Right-hand stop (screwed
all the way in)
If the radiators do not heat
up sufficiently at the factory
setting. In this case, you must
set the pump to the maximum
speed.
Mid-position (six anti-
clockwise rotations)
Factory setting
Five further anti-clockwise
rotations starting from the
mid-position
If noises are produced in the
radiators or radiator valves.
3. Install the front casing. (
→
Page 16)
10.4 Setting the domestic hot water temperature
1. Observe the applicable regulations regarding legionella
prevention.
Danger!
Risk of death from legionella.
Legionella multiply at temperatures below
60 °C.
▶
Ensure that the end user is familiar with
all of the Anti-legionella measures in order
to comply with the applicable regulations
regarding legionella prevention.
2. Set the domestic hot water temperature.
Condition : Water hardness: > 3.57 mol/m
³
–
Domestic hot water temperature:
≤
50
℃
3. Descale the water as required.
11 Handing over to the end user
▶
At the time of commissioning complete all relevant sec-
tions of the Benchmark commissioning checklist, located
at the rear of this document.
▶
For IE: Complete a “Declaration of Conformity” to indicate
compliance to I.S. 813. An example of this is given in the
current edition of I.S. 813.
▶
When you have finished the installation, affix the en-
closed sticker (which requests that the user reads the
instructions) to the front of the product in the end user's
language.
▶
Draw attention, to the current issue of the Gas Safety
(Installation and Use) Regulations, Section 35, which
imposes a duty of care on all persons who let out any
property containing a gas appliance in the UK.
▶
Explain to the end user how the safety devices work and
where they are located.
▶
Inform the end user how to handle the product.
▶
In particular, draw attention to the safety warnings that
the end user must follow.
▶
Inform the end user that they must have the product
maintained in accordance with the specified intervals.
▶
Pass all of the instructions and documentation for the
product to the end user for safe-keeping.
▶
Inform the end user about measures taken to ensure
the supply of combustion air and flue gas guiding, and
instruct the operator that he must not make any changes.
▶
Inform the end user that they must not store or use explo-
sive or highly flammable substances (such as petrol, pa-
per or paint) in the installation room of the product.
▶
Complete and sign off the Benchmark commissioning
check list.
▶
Complete and sign off the guarantee documentation.