Pump Specifications; Circulating Pump; System By-Pass; Venting - Vaillant ecoTEC SERIES Instructions For Installation And Servicing
Wall hung room sealed fan assisted condensing boiler
Hide thumbs
Also See for ecoTEC SERIES:
- Installation manual (68 pages) ,
- Operating manual (20 pages) ,
- Instructions for use manual (17 pages)
Table of Contents
Advertisement
Vessel Volume [L]
Initial system pressure (bar)
1.0
1.5
Pressure relief valve setting (bar)
3.0
Total water content of system litres
25
2.7
3.9
50
5.4
7.8
100
10.9
15.6
125
13.6
19.5
150
16.3
23.4
175
19.1
27.3
200
21.8
31.2
225
24.5
35.1
250
27.2
39.0
275
30.0
42.9
300
32.7
46.8
325
35.7
50.7
350
38.1
54.6
375
40.9
58.5
400
43.6
62.4
425
46.3
66.3
450
49.0
70.2
475
51.8
74.1
500
54.5
78.0
For system volumes other than those given
above, multiply the system volume by the
0.109
0.156
factor across
Table 3.7 Sizing of additional expansion vessel
3.11
Pump specifications
3.11.1 Circulating pump
only ecoTEC plus:
The circulating pump is included in the boiler. The residual
pump discharge height depending on the by-pass valve is
shown in Fig. 3.10.1 (ecoTEC plus) and 3.10.2 (ecoTEC plus
637 / 837).
The operating mode of the 2-step pump can be adjusted
below the diagnosis number “d.19”, see section 8.1.2.
400
300
200
1. Step
2. Step
100
0
0
200
400
600
800
1000 1200
1400
1600
1800
Volumeflow [ l/h ]
Fig. 3.10.1 Pump specifications ecoTEC plus
(except ecoTEC 637 and 837)
General requirements 3
400
300
200
1. Step
2. Step
100
0
0
200 400 600 800 1000 1200
1400
1600
1800
2000
Volumeflow [ l/h ]
Fig. 3.10.2 Pump specifications only ecoTEC 637 and 837
only ecoTEC pro:
The circulating pump is included in the boiler. The
ecoTEC pro appliances are fitted with a single-stage
pump. The residual pump discharge height depending on
the by-pass valve is shown in Fig. 3.11.
400
300
200
100
0
0
200
400
600
800
1000 1200
1400
1600
1800
Volumeflow [ l/h ]
Fig. 3.11 Pump specifications ecoTEC pro
3.11.2 System by-pass
An automatic system by-pass is provided in the boiler.
The boiler is suitable for use in systems with
thermostatic radiator valves and no additional by-pass
is required. The by-pass valve is adjustable, see section
5.3.
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 siphonic condensate discharge
(ecoTEC plus) or a condensate trap (ecoTEC pro)
incorporating a water trap of 140 mm.
Page 17
Hide quick links:
Advertisement
Table of Contents
