Adjustment And Display Levels; Cabinet-Type Casing; Opening The Isolator Devices; Starting Up The Product - Vaillant VU 306/6-3 OV (HGB) ecoFIT sustain 430 Operating Instructions Manual

4 Operation
4.3

Adjustment and display levels

The product has two adjustment and display levels.
The end user level contains information and setting options
that you require as the end user.
The installer level is reserved for the competent person. It is
protected by a code. Only competent persons may change
any settings in the installer level.
4.4

Cabinet-type casing

Enclosing the product in cabinet-type casing requires compli-
ance with the applicable design instructions.
If you require cabinet-type casing for your product, consult
a heating specialist company. Never, under any circum-
stances, enclose the product yourself.
4.5

Opening the isolator devices

1. Ask the competent person who installed the product to
explain to you where these isolator devices are located
and how to handle them.
2. Open the gas isolator cock fully.
3. Open the service valves in the heating installation's flow
and return.
Applicability: Product with connected domestic hot water cylinder
▶
Open the cold water stop valve.
4.6

Starting up the product

▶
Only start up the product once the casing has been com-
pletely closed.
4.7

Switching on the product

▶
Switch on the product via the main switch installed on-
site.
4.8

Setting the heating flow temperature

1.
Press ( ).
◁
The target value of the heating flow temperature
appears on the display.
Note
The competent person may have adjusted
the maximum possible temperature.
Conditions: No controller connected
▶
Use or to set the required heating flow temperat-
ure.
▶
Confirm by pressing
Conditions: Controller connected
▶
Set the maximum possible heating flow temperature on
the product.
▶
Confirm by pressing
▶
Set the required heating flow temperature on the control-
ler (→ Controller operating instructions).
6
.
.
4.9

Setting the hot water temperature

Danger!
Risk of death from legionella.
Legionella multiply at temperatures below
60 °C.
▶
Have a competent person inform you
about the measures that should be taken
to protect against Legionella in your in-
stallation.
▶
Do not set any water temperatures below
60 °C without consulting the competent
person first.
1.
Press ( ).
◁
The set hot water temperature flashes in the display.
Conditions: No controller connected
▶
Change the hot water temperature by pressing
.
▶
Confirm by pressing
Conditions: Controller connected
▶
Use to set the maximum possible hot water temper-
ature on the product.
▶
Confirm by pressing
▶
Set the required hot water temperature on the controller
(→ Controller operating instructions).
4.10

Switching off the product's functions

4.10.1 Switching off heating mode (Summer mode)
1. To switch off heating mode without switching off the hot
water generation, press
◁
The value of the heating flow temperature appears
in the display.
2.
Use the button to set the heating flow temperature to
Off.
3.
Confirm by pressing
◁
Heating mode is switched off.
◁
The symbol appears in the display.
4.11 Protecting the heating installation against
frost
4.11.1 Frost protection function
Caution.
Risk of material damage due to frost.
The frost protection function cannot guaran-
tee flow through the entire heating installa-
tion, which means that parts of the heating
installation may freeze and therefore become
damaged.
▶
During a period of frost, ensure that the
heating installation remains in operation
and that all rooms are sufficiently heated,
even when you are away.
Operating instructions ecoFIT sustain 0020277263_00
or
.
.
( ).
.