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13

Expansion vessel

1. 

Drain the system until the pressure gauge indi-
cates "0" or close the cap valve on the expansion
vessel and reduce the pressure in the expansion
vessel.

Note

The pre-charge pressure of the expansion vessel
(p

0

) is made up of the static system pressure (p

St

)

(= static head) and a supplement (p

0

 = p

St

 + sup-

plement).
The supplement depends on the high limit safety
cut-out setting. The following high limit safety cut-
out settings apply

100 °C: 0.2 bar (0.02 MPa)

110 °C: 0.7 bar (0.07 MPa).

2. 

If the pre-charge pressure of the expansion vessel
is lower than the static system pressure, top up
with nitrogen until the pre-charge pressure is 0.1 to
0.2 bar (0.01 to 0.02 MPa) higher.
The static pressure corresponds to the static head.

3. 

Top up with softened water until the charge pres-
sure of the cooled system is 0.1 to 0.2 bar (0.01 to
0.02 MPa) higher than the pre-charge pressure of
the expansion vessel.
Permiss. operating pressure: 4 bar (0.4 MPa)
For water quality requirements, see page 22.

Pump controlled pressure maintaining systems

!

Please note

Pressure fluctuations may cause damage to the
boiler or to other system components.
In heating systems with automatic pressure
maintaining systems, provide individual protec-
tion by installing a diaphragm expansion vessel
for each boiler. This applies in particular to pump
controlled pressure maintaining systems with
integral deaeration.
This reduces the frequency and level of pres-
sure fluctuations. This in turn contributes signifi-
cantly to improved operational reliability and a
longer service life of the system components.

Boiler out-
put

kW

Up to 300

Up to 500

Expansion
vessel

l

50

80

!

Please note

The ingress of oxygen can result in system dam-
age as a consequence of oxygen corrosion.
Only use pump controlled pressure maintaining
systems that are sealed against corrosion. The
pressure maintaining systems must be protected
against oxygen ingress into the heating water.
Pump controlled pressure maintaining systems
with atmospheric deaeration through cyclical
pressure release bring about central post-venti-
lation of the heating system. They do not pro-
vide oxygen removal in the sense of corrosion
protection as described in VDI 2035 Part 2.

Carry out all checks in accordance with the manufac-
turer's instructions. Limit pressure fluctuations to the
lowest possible differential. Cyclical pressure fluctua-
tions and more significant pressure differentials point
towards a system fault. Immediately remedy such
faults, otherwise other heating system components
may suffer damage.

Checking the setting of the temperature controller if a building management

system is used (DCC system)

!

Please note

Shutting down from full load can result in high
material stress and material damage to the
boiler.
If a system with a higher ranking building man-
agement system takes over the temperature
control of the boiler, adjust the settings at the
temperature controller TR. Set the electronic
temperature controller TR to at least 10 K below
the mechanical temperature controller TR of the
Vitotronic.

Commissioning, inspection, maintenance

 Checking the expansion vessel and system…

 (cont.)

5692818

 

Содержание TX3A

Страница 1: ...Service instructions for contractors VIESMANN Vitoplex 300 Type TX3A 90 to 500 kW Oil gas boiler VITOPLEX 300 5692818 GB 9 2018 Please keep safe ...

Страница 2: ...cable standards a ÖNORM EN ÖVGW G K directives ÖVGW TRF and ÖVE c SEV SUVA SVGW SVTI SWKI VKF and EKAS guideline 1942 LPG part 2 Safety instructions for working on the system Working on the system Where gas is used as the fuel close the main gas shut off valve and safeguard it against unintentional reopening Isolate the system from the power supply e g by removing the separate fuse or by means of ...

Страница 3: ...c distribution board Danger If water escapes from the appliance there is a risk of scalding Never touch hot heating water Condensate Danger Contact with condensate can be harmful to health Never let condensate touch your skin or eyes and do not swallow it Flue systems and combustion air Ensure that flue systems are clear and cannot be sealed for instance due to accumulation of conden sate or other...

Страница 4: ...ality requirements 22 Prevention of damage due to scaling 22 Prevention of damage due to corrosion on the water side 23 Using antifreeze in boilers 23 5 Commissioning service reports Water quality 25 Maintenance service 25 6 Specification 27 7 Decommissioning and dis posal Final decommissioning and disposal 29 8 Certificates EU Declaration of Conformity 30 Manufacturer s certificate according to t...

Страница 5: ...on Not required during inspection Steps required during maintenance Not required during maintenance Intended use The appliance is only intended to be installed and operated in sealed unvented heating systems that comply with EN 12828 with due attention paid to the associated installation service and operating instruc tions as well as the details in the datasheet It is only designed for the heating...

Страница 6: ...6 Vitoplex 300 type TX3A Fuels Fuel oil and natural gas Permissible operating pressure 4 bar 0 4 MPa Rated heating output 90 to 500 kW Information Product information 5692818 Information ...

Страница 7: ...on of the pressure switch 12 13 Checking the expansion vessel and system pressure 12 14 Checking the setting of the temperature controller if a building management system is used DCC system 13 15 Checking electrical plug in connections and cable grommets for firm seating 16 Checking the thermal insulation 17 Checking the water quality 14 18 Cleaning the sight glass in the boiler door 14 19 Checkin...

Страница 8: ...o prevent any heat supply to the consumers when heating the system from cold This also applies when restarting after main tenance and cleaning work Please note During boiler heat up unpleasant fumes and odours can result from outgassing from the thermal insulation the thermal block and the paint Ventilate the room during commissioning 12 Once the flow temperature has been reached successively swit...

Страница 9: ...e pipe A C D B Fig 2 1 Remove internal pipes B with internal pipe extrac tor A 2 Clean flues C and combustion chamber D with the brush Remove combustion residues with a vacuum cleaner Commissioning inspection maintenance Opening the boiler door and cleaning cover cont 5692818 ...

Страница 10: ...omponents on the boiler door If work needs to be carried out on the thermal insula tion observe the following Danger When working with high temperature insulating materials that contain zirconium or aluminium silicate ceramic fibres fibre dust may develop This fibre dust can be harmful to health Only trained personnel may adjust or replace the insulation Wear suitable protective clothing especiall...

Страница 11: ...W C Hot gas flue D Resistor E Spring clip Securing the boiler door and cleaning cover Note On gas burners mount the gas supply pipe Danger Escaping gas leads to a risk of explosion Check all gas connections for leaks Commissioning inspection maintenance Inserting the internal pipes 5692818 ...

Страница 12: ...he water level and pressure limiters in accordance with manufacturer s details Checking the function of the pressure switch Installation instructions pressure switch set Checking the expansion vessel and system pressure Expansion vessel manufacturer s documentation Note Carry out this test on a cold system Commissioning inspection maintenance Securing the boiler door and cleaning cover cont 569281...

Страница 13: ...ibutes signifi cantly to improved operational reliability and a longer service life of the system components Boiler out put kW Up to 300 Up to 500 Expansion vessel l 50 80 Please note The ingress of oxygen can result in system dam age as a consequence of oxygen corrosion Only use pump controlled pressure maintaining systems that are sealed against corrosion The pressure maintaining systems must be...

Страница 14: ... and 10 5 Cleaning the sight glass in the boiler door Fig 6 Check the gaskets and hose connection for leaks Checking the mixer for ease of operation and tightness 1 Remove the motorised lever from the mixer han dle 2 Check the mixer for ease of operation 3 Check the mixer for leaks Replace the O rings if the mixer leaks 4 Snap the motorised lever into place Checking the function of the return temp...

Страница 15: ...andby Partial load operation Set the minimum heating output for the base load stage according to the conditions of the flue system Note that the flue system must be suitable for the low flue gas temperatures that may occur In the event of frequent cycling in standby mode and for partial loads below 40 Insulate the flue gas collector Install a motorised flue gas damper Set the minimum runtime for t...

Страница 16: ...C for gas opera tion Instructing the system user The installer must instruct the user in the operation of the system Operating and service documents 1 Complete and detach the customer registration card Hand the system user this part for safekeeping Retain the heating contractor s part 2 File all parts lists operating and service instruc tions in the folder and hand this over to the system user The...

Страница 17: ... number of the part from this parts list Parts not shown Pos Part 300 Installation instructions 301 Service instructions 302 Thermal insulation small parts 303 Touch up spray paint Vitosilver 304 Touch up paint stick Vitosilver 305 Flame tube gasket Parts list Ordering parts 5692818 Components ...

Страница 18: ...009 200 208 207 206 019 020 001 002 010 214 214 003 007 006 005 004 022 021 Fig 7 B Boiler control unit see parts list in the service instructions of the boiler control unit Parts list Parts list 5692818 Components ...

Страница 19: ...9 Thermal insulation block 010 Thermal insulation mat 012 Packing GF 20 x 15 mm 019 Cleaning brush Wearing part 020 Complete cleaning equipment incl extraction hook and pos 019 021 Burner plate 1 022 Gasket burner plate 1 200 Front panel top 206 Top panel right 207 Top panel left 208 Control unit fascia 214 Fixing rail top 1 from 140 kW Parts list Parts list cont 5692818 Components ...

Страница 20: ...13 210 202 016 015 017 201 215 215 C C D 018 209 212 Fig 8 A Type plate either right or left C Burner cable see parts list in the service instruc tions of the boiler control unit D Therm Control temperature sensor Parts list Parts list 5692818 Components ...

Страница 21: ...5 Side panel front left 209 Thermal insulation jacket 210 Thermal insulation mat back 211 Thermal insulation mat flue gas collector 212 Vitoplex 300 logo 213 Edge protection 215 Fixing rail bottom 216 Side panel centre only from 390 kW 217 Side panel back right 218 Side panel back left Information on pos 013 Rated heating out put kW 90 115 140 180 235 300 390 405 500 Quantity 5 5 6 6 5 8 9 10 11 P...

Страница 22: ...he requirements of the next highest category of total heating output in accordance with the table In multi boiler sys tems apply the output of the smallest boiler In case of severe excess 50 l kW soften the water down to a total of alkaline earths of 0 02 mol m3 overall hardness 0 11 dH Operating information During expansion or repair work only drain the pipe work sections necessary Check clean an...

Страница 23: ...c pipes from other heating circuits e g from the boiler by the provision of a corrosion resistant heat exchanger No further anti corrosion measures are required for sealed unvented hot water heating systems subject to the above points being observed However take addi tional precautions where there is a risk of oxygen ingress for example by adding oxygen binder sodium sulphite 5 to 10 mg l into the...

Страница 24: ...at transfer medium can cause corrosion damage Only use oxygen diffusion resistant hoses or metal hoses for flexible connections Never equip the system on the primary side with zinc plated heat exchangers containers or pipes as zinc can be corroded by glycol water mixtures To avoid the risk of corrosion ensure that there is no difference in electrical potential between system components that are in...

Страница 25: ...ter Boiler wa ter Medium Dosing volume m3 m3 m3 Maintenance service Commissioning Maintenance service Maintenance service Date By Commissioning Maintenance service Maintenance service Date By Commissioning Maintenance service Maintenance service Date By Commissioning service reports Water quality 5692818 Appendix ...

Страница 26: ...26 Commissioning Maintenance service Maintenance service Date By Commissioning Maintenance service Maintenance service Date By Commissioning service reports Maintenance service cont 5692818 Appendix ...

Страница 27: ... 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 wat...

Страница 28: ...198 198 248 248 Standard seasonal effi ciency to DIN for operation with fuel oil natural gas At heating system tempera ture 75 60 C 90 Hs gross cv Standby loss qB 70 0 40 0 37 0 32 0 34 0 37 0 29 0 25 0 23 Rated heating output Boiler with Vitotrans 300 Gas operation kW 98 7 126 1 152 7 197 1 257 2 328 5 435 2 543 7 Oil operation kW 95 8 122 5 148 8 191 7 250 3 319 5 429 5 529 9 Pressure drop on th...

Страница 29: ...ot part of ordi nary household waste For decommissioning the system isolate the system from the power supply and allow components to cool down where appropriate All components must be disposed of correctly Decommissioning and disposal Final decommissioning and disposal 5692818 Appendix ...

Страница 30: ...as part of EC type testing can be used to assess the energy efficiency of heating and ventilation systems in buildings to DIN V 4701 10 as specified by the EnEV Germany see Specification table Manufacturer s certificate according to the 1st BImSchV We Viessmann Werke GmbH Co KG D 35107 Allendorf confirm that the product Vitoplex 300 type TX3A complies with the following conditions stipulated by th...

Страница 31: ...nal pipes Cleaning 9 Inserting 11 M Maintenance service report 25 Mixer checking for ease of operation and tightness 14 O Operating and service documents 16 P Parts list 17 Pressure switch function checking 12 Product information 6 Pump controlled pressure maintaining systems 13 S Safety equipment checking 12 Shutdown 8 Sight glass in the boiler door cleaning 14 Symbols 5 System Commissioning 8 Fi...

Страница 32: ... Shropshire TF1 7YP GB Telephone 44 1952 675000 Fax 44 1952 675040 E mail info uk viessmann com Viessmann Werke GmbH Co KG D 35107 Allendorf Telephone 49 6452 70 0 Fax 49 6452 70 2780 www viessmann com 5692818 Subject to technical modifications ...

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