Cabinet-Type Casing; Opening The Isolator Devices; Starting Up The Product; Switching On The Product - Vaillant ecoFIT sustain 835 Operating Instructions Manual

4.4 Cabinet-type casing

Enclosing the product in cabinet-type cas-
ing requires compliance with the applic-
able design instructions.
If you require cabinet-type casing for your
product, consult a heating specialist com-
pany. Never, under any circumstances,
enclose the product yourself.

4.5 Opening the isolator devices

1. Ask the competent person who in-
stalled the product to explain to you
where these isolator devices are loc-
ated 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.
4. Open the cold water stop valve.

4.6 Starting up the product

▶
Only start up the product once the cas-
ing has been completely 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 temperature.
▶
Confirm by pressing
0020230530_01 ecoFIT sustain Operating instructions
Conditions: Controller connected
▶
▶
▶
4.9 Setting the hot water
1. Press
Conditions: No controller connected
▶
▶
Conditions: Controller connected
▶
▶
▶
.
Set the maximum possible heating flow
temperature on the product.
Confirm by pressing
Set the required heating flow temperat-
ure on the controller (→ Controller oper-
ating instructions).
temperature
Warning.
Risk of being scalded by hot
water.
To protect against Legionella,
the hot water can be heated up
to above 60 °C at pre-defined
times.
▶
Have a competent person
inform you about the meas-
ures that should be taken to
protect against Legionella in
your system.
( ).
◁
The set hot water temperature
flashes in the display.
Change the hot water temperature by
pressing or .
Confirm by pressing
Use to set the maximum possible hot
water temperature on the product.
Confirm by pressing
Set the required hot water temperature
on the controller (→ Controller operating
instructions).
Operation 4
.
.
.
11