Setting The Pump Output; Setting The Bypass Valve; Handing The Product Over To The Operator - Vaillant ecoTEC pro 24 Installation And Maintenance Instructions Manual

8 Adapting the unit to the heating installation
8.4

Setting the pump output

1. Navigate to diagnostics code D.014 in the installer level
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.
8.4.1 Remaining feed head of the pump
8.4.1.1 Pump characteristic line for VUW 246, VUW
286
400
350
300
250
200
150
100
50
0
0 200 400 600
8.4.1.2 Pump characteristic line for VUW 306
400
300
200
100
0
0 200 400 600
8.5

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 11)
24
.
100% PWM
80%
70%
60%
53%
800 1000 1200 1400
Flow rate [ l/hr ]
100% PWM
85%
70%
60%
53%
800 1000 1200 1400 1600 1800
Flow rate [ l/hr ]
▶
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.
8.6

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 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 operator for safe-keeping.
▶
Inform the operator about measures taken to ensure the
supply of combustion air and flue gas guiding, and in-
struct the operator that he must not make any changes.
▶
Inform the operator that they must not store or use ex-
plosive or highly flammable substances (such as petrol,
paper 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.
Installation and maintenance instructions ecoTEC pro 0020244995_02
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