Viessmann TX3A, Service Instructions For Contractors

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Rated heating output kW 90 115 140 180 235 300 405 500
Rated heat input kW 97 124 151 194 254 323 436 538
Permiss. flow temperature
(= safety temperature)
°C 110 (up to 120 °C on request)
Permiss. operating pres-
sure bar 4
kPa 400
Pressure drop on the hot
gas side Pa 40 60 80 100 200 200 250 330
mbar 0.4 0.6 0.8 1.0 2.0 2.0 2.5 3.3
Boiler body dimensions
Length excl. boiler door mm 1215 1420 1405 1600 1820 1820 1865 2010
Width mm 575 575 650 650 730 730 865 865
Height (incl. connectors) mm 1145 1145 1180 1180 1285 1285 1455 1455
Overall dimensions
Length excl. burner mm 1300 1500 1485 1680 1905 1905 1945 2090
Length incl. burner and hood mm 1700 1905 1910 2110 2330 2330
– –
Width mm 755 755 825 825 905 905 1040 1040
Height incl. control unit mm 1315 1315 1350 1350 1460 1460 1625 1625
Maintenance height (control
unit) mm 1485 1485 1520 1520 1630 1630 1795 1795
Foundation
Length mm 1000 1200 1200 1400 1650 1650 1650 1800
Width mm 760 760 830 830 900 900 1040 1040
Combustion chamber di-
ameter mm 380 380 400 400 480 480 570 570
Combustion chamber
length mm 800 1000 1000 1200 1400 1400 1400 1550
Weight
Boiler body kg 350 394 460 490 650 742 940 1110
Weight incl. thermal insula-
tion and boiler control unit
kg 395 440 510 540 710 802 1075 1295
Weight incl. thermal insula-
tion, boiler control unit and
burner
kg 420 464 540 570 740 832
– –
Capacity boiler water litres 170 210 250 290 470 430 590 630
Boiler connections
Boiler flow and return PN 6
DN 65 65 65 65 65 80 100 100
Safety connection
(safety valve) R 1
¼
1
¼
1
¼
1
¼
1
¼
1
¼
1
½
1
½
Drain R 1
¼
1
¼
1
¼
1
¼
1
¼
1
¼
1
¼
1
¼
Flue gas parameters
*2
Temperature (at 60 °C boiler
water temperature)
–
At rated heating output °C 160
–
At partial load °C 105
*2
Values for calculating the size of the flue system to EN 13384, relative to 13 % CO
2
for fuel oil EL and 10 % CO
2
for natural
gas.
Flue gas temperatures as actual gross values at 20 °C combustion air temperature.
The details for partial load refer to an output of 60 % of rated heating output. If the partial load differs (depending on operat-
ing mode), calculate the flue gas mass flow rate accordingly.
Specification
Specification
5692818
Appendix