Vaillant ecoTEC SERIES User Manual

11Operating manual ecoTEC 0020052777_00
4.3 Start-up
1
2
Fig. 4.5 Switching the appliance on
• Use the main switch (1) to switch the appliance on and
off:
1: "ON"
0: "OFF"
When you switch the unit on the display (2) shows the
current heating feed temperature.
To customise the settings in the unit, read Chapters 4.4
and 4.5 where the options for the hot water generation
and heating mode settings are described.
a
Caution!
Risk of damage!
The frost protection and monitoring systems
are only active if the main switch of the unit is
in the "I" position and the unit is connected to
the power mains.
To ensure that these protection devices remain active,
switch your gas wall-mounted boiler on and off using
the controller (see the corresponding operating
manual).
Chapter 4.8 describes how you can fully shutdown your
gas-fired wall-mounted boiler.
4.4 Hot water preparation
To generate hot water in conjunction with the VU unit
type a VIH-type domestic hot water cylinder must be
connected to the boiler.
4.4.1 Setting the hot water temperature
2
3
Fig. 4.6 Setting the water temperature
• Switch on the unit as described in Chapter 4.3.
• Specify the storage temperature you require using
the corresponding rotary knob (3). In doing this:
- left-hand limit stop,
frost protection approx. 15 °C
- right-hand limit stop, max. 70 °C
When you set the desired temperature, the respective
nominal value is shown on the display (2).
This display disappears after 3 seconds and is replaced
by the standard display (current heating feed tempera-
ture or water pressure in the system (optional).
d
Danger!
Health danger from formation of Legionella!
If the unit is used for post-heating within a
solar-supported drinking water heating installa-
tion, set the hot water outlet temperature to at
least 60 °C via the rotary knob (3).
a
Caution!
Risk of calcification!
If the water hardness is more than
3.57 mol/m
3
(20 °dH), do not turn the rotary
knob (3) beyond the middle position.
h
Note!
If your controller is connected to a dual-cable
eBUS line, specify the highest possible hot
water temperature using the corresponding ro-
tary knob. Specify the set target temperature
for your cylinder at the controller.
Operation 4

Vaillant ecoTEC SERIES Specifications

General

Model	ecoTEC SERIES
ErP Rating	A
Mounting	Wall-mounted
Dimensions	Varies by model
Weight	Varies by model
Fuel Type	Natural gas or LPG
NOx Emissions	Class 5 (less than 56 mg/kWh)
Output Range	35kW