Vaillant ecoTEC plus 837 Service Manual download pdf (Page 79)

Technical data

Installation and maintenance instructions ecoTEC plus 0020116700_06 79

17 Technical data

ecoTEC plus Unit

612 (VU

126/5-5)

615 (VU

156/5-5)

618 (VU

186/5-5)

624 (VU

246/5-5)

630 (VU

306/5-5)

637 (VU

376/5-5)

Nominal heat output range P at 50/30 °C kW 3.3 - 12.9 3.3 - 16.1 4.2 - 19.3 5.7 - 25.7 6.4 - 32.1 7.1 - 39.6

Nominal heat output range P at 80/60 °C kW 3.0 - 12.2 3.0 - 15.4 3.8 - 18.5 5.2 - 24.4 5.8 - 30.4 6.4 - 37.6

Maximum heat output for hot water generation kW 12.2 15.4 18.5 24.4 30.4 37.6

Maximum heat input kW 12.4 15.5 18.6 24.7 30.9 38.1

Minimum heat input G20 kW 3.2 3.2 4.0 5.5 6.2 6.8

Minimum heat input G31 kW – – 5.3 6.4 9.0 9.0

Minimum heat output with G31 kW – – 5.0 6.0 8.5 8.5

Heating output setting range kW 3 - 12 3 - 15 4 - 18 5 - 24 6 - 30 6 - 37

Heating

Max. flow temperature °C 85

Max. flow temperature setting range

(factory setting: 75 °C)

°C 30 - 80

Min. pressure for full operation MPa/bar 0.08/0.8

Permissible total over-pressure MPa/bar 0.3/3

Expansion vessel capacity l 10

Circulation water quantity

(with reference to DT = 20 K)

l/h 516 645 774 1032 1290 1591

Condensate rate approx. (pH value 3.5 – 4.0)

in heating mode 50 °C supply/30 °C return

l/h 1.2 1.6 1.9 2.5 3.1 3.8

Remaining feed head of pump (at nominal circula-

tion water volume)

MPa/bar 0.025/0.25 0.020/0.20

General

Gas connection, boiler side mm 15 15 15 15 15 22

Flow/return heating connections, boiler side mm 22

Hot and cold water connection, boiler side Inches G 3/4

Connector expansion relief valve (minimum) mm 15

Condensate discharge pipework (minimum) mm 19

Flue gas spigot mm 60/100 (concentric), optional 80/125 (concentric)

Gas connection pressure (gas inlet working pres-

sure) natural gas, G20

kPa/mbar 0.20/20

Gas connection pressure (gas inlet working pres-

sure) propane, G31

kPa/mbar 0.37/37

Gas flow rate at 15 °C and 1013mbar

(based on hot water generation if applicable) G20

G31

kg/h

1.3

0.96

1.6

1.2

2.0

1.44

2.6

1.92

3.3

2.4

4.0

2.96

Flue gas mass flow min./max. g/s 1.4/5.6 1.4/7.0 1.8/8.4 2.4/11.1 2.7/13.9 3.0/17.1

Flue gas temperature min./max. °C 40/70

Certificated flue gas connections C13, C33, C43, C53, C83, C93, B53P

NOx class 5

NOx mg/kWh 19.7 22.9 25.9 32.3 30.2 36.0

SEDBUK (2005) A

SEDBUK (2009) (G20/G31) 89.0/- 89.1/- 89.3/90.3 89.4/- 89.4/90.4 89.2/-

Boiler dimensions (H x W x D) mm 720 x 440 x 338

720 x 440

x 372

720 x 440

x 406

Mounting weight approx. kg 35 35 35 37 39 41

Electrical connection V/Hz 230/50

Built-in fuse 2 A, slow-blow

Electrical power consumption min./max. W 65/90 70/95 75/100 70/100 75/110 100/130

Electrical power consumption at 30% partial load W 40 40 45 50 50 50

Standby electrical consumption W < 2 < 2 < 2 < 2 < 2 < 3,3

Level of protection IP X4 D

Certification number CE-0085CM0320

17.1 Technical data for ecoTEC plus VU boiler

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