Pump Specifications; Circulating Pump; System Bypass; Venting - Vaillant ecoTEC PLUS SERIES Installation And Maintenance Manual

3 General requirements

4 Boiler installation sequence

3.11

Pump specifications

3.11.1 Circulating pump

only ecoTEC plus:
The circulating pump is included in the boiler. The resid-
ual pump discharge height depending on the overflow
valve is shown in Fig. 3.10.
The operating mode of the 2-step pump can be adjusted
below the diagnosis point d.12, see Section 8.1.2.
400
300
200
1. Step
100
0
0 200 400 600
Fig. 3.10 Pump specifications ecoTEC plus
only ecoTEC pro:
The circulating pump is included in the boiler. The eco-
TEC pro appliances are fitted with a single-stage pump.
The residual pump discharge height depending on the
overflow valve is shown in Fig. 3.11.
400
300
200
100
0
0 200 400 600
Fig. 3.11 Pump specifications ecoTEC pro

3.11.2 System bypass

An automatic system bypass is provided in the boiler.
The boiler is suitable for use in systems with thermostat-
ic radiator valves and no additional bypass is required.
The overflow valve is adjustable, see Section 5.8.

3.11.3 Venting

The boiler is fitted with an automatic air vent. Additional
provision should be made to enable the heating system
to be vented during filling and commissioning either by
automatic air vents or manually.
3.12

Condensate trap

The boiler is fitted with a siphon condensate discharge
(ecoTEC plus) or a condensate trap (ecoTEC pro) incor-
porating a water trap of 140 mm.
16
2. Step
800 1000 1200 1400 1600
Volumeflow [ l/h ]
800 1000 1200 1400 1600
Volumeflow [ l/h ]
4 Boiler installation sequence
4.1 Required minimum distances/assembly clear-
ances
min 5
1800
Fig. 4.1 Distances during installation (dimensions in mm)
Both for the installation/assembly of the appliance and
also for carrying out maintenance tasks later, you need
the minimum distances and minimum assembly clear-
ances given below:
– side distance:
– lower side
– upper side*:
– front side**:
It is not necessary to keep a clearance between the
appliance and combustible substances or components,
1800
as at the rated heating power of the appliance, the tem-
perature here is always lower than the permitted tem-
perature of 85 °C.
Note
If the boiler is to be fitted in a timber framed
building, it should be fitted in accordance with
British Gas publication DM2 'Guide for gas
installations in timber framed housing'.
min 500**
min 5
5 mm on each side
180 mm
167 mm for flue system
Ø 60/100
246 mm for flue system
Ø 80/125 mm
500 mm
This distance is needed for easier
access during maintenance tasks.
Installation and maintenance manual ecoTEC