Setting The Maintenance Interval; Setting The Pump Output; Setting The Bypass Valve; Handing The Product Over To The Operator - Vaillant ecoTEC plus Installation And Maintenance Instructions Manual

8.2

Setting the maintenance interval

Navigate to Menu → Installer level → Diagnostics
1.
menu → D.084 Maintenance in and confirm by press-
ing .
2. Set the maintenance interval (operating hours) until the
next maintenance work is due and confirm by pressing
.
Number
Heat de-
of per-
mand
sons
1 ‑ 2
5.0 kW
2 ‑ 3
1 ‑ 2
10.0 kW
2 ‑ 3
2 ‑ 3
15.0 kW
3 ‑ 4
3 ‑ 4
20.0 kW
4 ‑ 5
3 ‑ 4
25.0 kW
4 ‑ 6
3 ‑ 4
> 27.0 kW
4 ‑ 6
8.3

Setting the pump output

Navigate to Menu → Installer level → Diagnostics
1.
menu → D.014 Pump speed target value and confirm
by pressing .
2. Set the required pump output.
Conditions: Low loss header installed
▶
Switch off the speed regulation and set the pump output
to a fixed value.
8.3.1 Remaining feed head of the pump
8.3.1.1 Pump characteristic line for VUI 386
400
300
200
100
0
0 200 400 600
0020209593_01 ecoTEC plus Installation and maintenance instructions
Adapting the unit to the heating installation 8
Guideline value for burner
operating hours until the
next inspection/maintenance
work is due for an average
operating time of one year
(dependent upon the system
type)
1050 h
1150 h
1500 h
1600 h
1800 h
1900 h
2600 h
2700 h
2800 h
2900 h
3000 h
3000 h
100% PWM
85%
70%
60%
53%
Minimum
with Auto
800 1000 1200 1400 1600 1800
Flow rate [ l/hr ]
8.4

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 code D.014.
▶
Remove the front casing. (→ Page 13)
▶
Regulate the pressure using the adjusting screw (1).
Pres-
Position of the sure
adjusting screw in MPa
(mbar)
Right-hand stop
0.035
(turned all the
(350)
way down)
Mid-position
0.025
(5 turns to the
(250)
left)
5 further turns to
0.017
the left from the
(170)
mid-position
▶
Install the front casing.
8.5

Handing the product over to the operator

▶
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 operator's
language.
▶
Explain to the operator how the safety devices work and
where they are located.
▶
Inform the operator how to handle the product.
▶
In particular, draw attention to the safety information
which the operator must follow.
▶
Inform the operator of the necessity to have the product
maintained according to the specified intervals.
1
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
29