Setting The Bypass Valve; Setting The Hot Water Temperature; Handing The Product Over To The End User; 10 Troubleshooting - Vaillant ecoFIT sustain 615 Installation And Maintenance Instructions Manual

8.3

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.
Conditions: d.14 is set to 0 = auto
▶
Do not change the factory settings.
Conditions: d.14 is set to 1 - 5
▶
Remove the front casing. (→ Page 9)
1
▶
Regulate the pressure using the adjusting screw (1).
Position of the adjusting
screw
Right-hand stop (screwed
all the way in)
Mid-position (six anti-
clockwise rotations)
Five further anti-clockwise
rotations starting from the
mid-position
▶
Install the front casing. (→ Page 9)
8.4

Setting the hot water temperature

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.
▶
Set the hot water temperature.
0020277252_00 ecoFIT sustain Installation and maintenance instructions

Handing the product over to the end user 9

Notes/application
If the radiators do not heat
up sufficiently at the default
setting. In this case, you must
set the pump to the maximum
speed.
Default setting
If noises are produced in the
radiators or radiator valves.
Conditions: Water hardness: > 3.57 mol/m³
– Hot water temperature: ≤ 50 ℃
9 Handing the product over to the end
user
▶
When you have finished the installation, attach the sticker
supplied (in the end user's language) to the product
cover.
▶
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 information
which the end user must follow.
▶
Inform the end user that they must have the product
maintained in accordance with the specified intervals.
▶
Instruct the end user about measures taken for routing
the combustion air supply and flue system.

10 Troubleshooting

10.1

Eliminating faults

▶
If fault messages (F.xx) appear, eliminate the fault after
referring to the table in the appendix or using the check
programmes. (→ Page 14)
Overview of fault codes (→ Page 32)
If several faults occur at the same time, the display shows
the corresponding fault messages for two seconds each in
alternation.
▶
Press (max. three times) to restart the product.
▶
If you are unable to eliminate the fault and the fault re-
curs despite reset attempts, contact customer service.
10.2

Procuring spare parts

The original components of the product were also certified
by the manufacturer as part of the declaration of conformity.
If you use other, non-certified or unauthorised parts during
maintenance or repair work, this may void the conformity of
the product and it will therefore no longer comply with the
applicable standards.
We strongly recommend that you use original spare parts
from the manufacturer as this guarantees fault-free and safe
operation of the product. To receive information about the
available original spare parts, contact the contact address
provided on the reverse of these instructions.
▶
If you require spare parts for maintenance or repair
work, use only the spare parts that are permitted for the
product.
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