Baxi UBVT 200 DC Troubleshooting guide

EN
Solar hot water calorifer
UBVT 200...400 SC
UBVT 200...500 DC
L000398-A
Installation, User
and Service
Manual
300027525-001-02

Contents
1 Introduction ................................................................................................4
1.1 Symbols used .......................................................4
1.1.1 Symbols used in the manual ...................................4
1.1.2 Symbols used on the equipment .............................4
1.2 Abbreviations ........................................................4
1.3 General ..................................................................5
1.3.1 Manufacturer’s liability .............................................5
1.3.2 Installer’s liability .....................................................5
1.3.3 User’s liability ..........................................................5
1.4 Homologations ......................................................6
1.4.1 Certifications ...........................................................6
1.4.2 Directive 97/23/EC ..................................................6
2Safety instructions and recommendations ..............................................7
2.1 Safety instructions ...............................................7
2.2 Recommendations ................................................7
3Technical description ................................................................................9
3.1 General description ..............................................9
3.2 Solar domestic hot water calorifier .....................9
3.3 Technical specifications ....................................10
3.3.1 Specifications of the solar calorifiers .....................10
3.3.2 Magnesium anodes ...............................................11
4 Installation ................................................................................................12
4.1 Regulations governing installation ...................12
4.2 Package list .........................................................12
4.2.1 Standard delivery ..................................................12
4.2.2 Accessories ...........................................................12
4.3 Choice of the location ........................................13
4.3.1 Data plate ..............................................................13
4.3.2 Location of the appliance ......................................13
4.3.3 Main dimensions ...................................................14
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4.4 Positioning the appliance ..................................16
4.5 Levelling ..............................................................16
4.6 Installing the temperature sensors ...................16
4.7 Hydraulic installation diagram ..........................16
4.7.1 Legend ..................................................................16
4.7.2 Diagram with a wall-hung gas boiler or a heat
pump .....................................................................19
4.7.3 Diagram with a floor-standing boiler ......................20
4.7.4 Diagram with solar circuit only ..............................21
4.7.5 Safety unit (except France) ...................................21
4.7.6 Safety unit (for France only) ..................................22
4.8 Hydraulic connections .......................................22
4.8.1 Primary solar circuit ...............................................22
4.8.2 Primary heating circuit ...........................................22
4.8.3 Connecting the calorifer to the domestic water circuit
(secondary circuit) .................................................23
4.9 Filling the DHW calorifer ....................................25
4.10 Filling the primary solar circuit .........................25
4.11 Filling the primary circuit ...................................26
5 Commissioning ........................................................................................27
5.1 Check points before commissioning ................27
5.1.1 Domestic hot water calorifer ..................................27
5.1.2 Primary solar circuit ...............................................27
5.1.3 Primary heating circuit ...........................................27
5.1.4 Electrical connection .............................................27
5.2 Commissioning procedure ................................28
5.2.1 Secondary circuit (domestic water) .......................28
5.2.2 Primary solar circuit ...............................................28
6 Checking and maintenance .....................................................................29
6.1 General instructions ...........................................29
6.2 Safety valve or safety unit .................................29
6.3 Cleaning the casing material .............................29
6.4 Checking the magnesium anode .......................29
6.5 Descaling .............................................................30
6.6 Removing and remounting the inspection
traps .....................................................................30
6.6.1 Removing the inspection traps ..............................30
6.6.2 Remounting the inspection traps ...........................31
Contents
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6.7 Inspection and maintenance of the solar
circuit ...................................................................32
6.7.1 Maintenance operations to be performed .............32
6.7.2 Adding heat transporting fluid ...............................32
6.8 Maintenance form ...............................................33
7 Warranty ....................................................................................................34
7.1 General ................................................................34
7.2 Warranty terms ...................................................34
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1 Introduction
1.1 Symbols used
1.1.1. Symbols used in the manual
In these instructions, various danger levels are employed to draw the
user’s attention to particular information. In so doing, we wish to
safeguard the user’s safety, obviate hazards and guarantee correct
operation of the appliance.
DANGER
Risk of a dangerous situation causing serious physical
injury.
WARNING
Risk of a dangerous situation causing slight physical
injury.
CAUTION
Risk of material damage.
Signals important information.
¼Signals a referral to other instructions or other pages in the
instructions.
1.1.2. Symbols used on the equipment
Before installing and commissioning the device, read
carefully the instruction manuals provided.
Dispose of the used products in an appropriate recovery
and recycling structure.
1.2 Abbreviations
4CFC: Chlorofluorocarbon
4DHW: Domestic hot water
UBVT 200...400 SC UBVT 200...500 DC 1. Introduction
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1.3 General
1.3.1. Manufacturer’s liability
Our products are manufactured in compliance with the requirements
of the various applicable European Directives. They are therefore
delivered with [ marking and all relevant documentation.
In the interest of customers, we are continuously endeavouring to
make improvements in product quality. All the specifications stated in
this document are therefore subject to change without notice.
Our liability as the manufacturer may not be invoked in the following
cases:
4Failure to abide by the instructions on using the appliance.
4Faulty or insufficient maintenance of the appliance.
4Failure to abide by the instructions on installing the appliance.
1.3.2. Installer’s liability
The installer is responsible for the installation and inital start up of the
appliance. The installer must respect the following instructions:
4Read and follow the instructions given in the manuals provided
with the appliance.
4Carry out installation in compliance with the prevailing legislation
and standards.
4Perform the initial start up and carry out any checks necessary.
4Explain the installation to the user.
4If a maintenance is necessary, warn the user of the obligation to
check the appliance and maintain it in good working order.
4Give all the instruction manuals to the user.
1.3.3. User’s liability
To guarantee optimum operation of the appliance, the user must
respect the following instructions:
4Read and follow the instructions given in the manuals provided
with the appliance.
4Call on qualified professionals to carry out installation and initial
start up.
4Get your installer to explain your installation to you.
4Have the required checks and services done.
4Keep the instruction manuals in good condition close to the
appliance.
1. Introduction UBVT 200...400 SC UBVT 200...500 DC
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This appliance is not intended to be used by persons (including
children) whose physcial, sensory or mental capacity is impaired or
persons with no experience or knowledge, unless they have the
benefit, through the intermediary of a person responsible for their
safety, of supervision or prior instructions regarding use of the
appliance. Care should be taken to ensure that children do not play
with the appliance.
To prevent hazardous situations from arising, if the mains lead is
damaged it must be replaced by the original manufacturer, the
manufacturer’s dealer or another suitably skilled person.
1.4 Homologations
1.4.1. Certifications
This product complies to the requirements to the european directives
and following standards:
42006/95/EC Low Voltage Directive.
Reference Standard: EN 60.335.1.
42004/108/EC Electromagnetic Compatibility Directive.
Reference Standards: EN 50.081.1, EN 50.082.1, EN 55.014
1.4.2. Directive 97/23/EC
This product conforms to the requirements of european directive 97 /
23 / EC, article 3, paragraph 3, on pressure equipment.
UBVT 200...400 SC UBVT 200...500 DC 1. Introduction
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2 Safety instructions and
recommendations
2.1 Safety instructions
CAUTION
Before any work, switch off the mains supply to the
appliance.
CAUTION
In order to limit the risk of being scalded, the installation of
a thermostatic mixing valve on the domestic hot water flow
piping is compulsory.
2.2 Recommendations
CAUTION
Do not neglect to service the appliance. Service the
appliance regularly to ensure that it operates correctly.
WARNING
Only qualified professionals are authorised to work on the
appliance and the installation.
WARNING
4The heating water and the water-propylene-glycol
mixture must not come into contact with the domestic
hot water.
4The domestic hot water must not circulate through an
exchanger.
4Solar installations can be protected against lighting
and must be earthed or connected to an equipotential
connection.
To take advantage of the guarantee, no modifications must be made
to the appliance. Only remove the covers for maintenance and
breakdown repair operations and put the covers back in place after
the maintenance and breakdown repair operations.
Instructions stickers
The instructions and warnings affixed to the appliance must never be
removed or covered and must remain legible during the entire lifespan
of the appliance. Immediately replace damaged or illegible
instructions and warning stickers.
2. Safety instructions and recommendations UBVT 200...400 SC UBVT 200...500 DC
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WARNING
Never cut the power to the solar control system, even
during extended absences. The control system protects
the installation against overheating in summer when it is
running.
WARNING
Do not modify the control system parameters unless fully
conversant with them.
During extended absences, we recommend lowering the set point
temperature in the solar DHW calorifier to 45°C. When the user is
present, the set point must be set to 60°C.
UBVT 200...400 SC UBVT 200...500 DC 2. Safety instructions and recommendations
12/02/2013 - 300027525-001-02 8

3 Technical description
3.1 General description
UBVT 200…400 SC - UBVT 200…500 DC domestic hot water
calorifiers are connected to solar collectors by a solar station. UBVT
200…500 DC domestic hot water calorifers can use a boiler, a heat
pump or an electrical resistor as back-up. UBVT 200...400 SC
domestic hot water calorifiers can use an electrical resistor as back-
up.
Main parts:
4The tanks are made of high quality steel lined with food quality
standard enamel vitrified at 850°C, which protects the tank from
corrosion.
4The heat exchangers welded into the tank are made of smooth
piping, the external surface of which, in contact with the drinking
water, is enamelled.
4The appliance is highly insulated with CFC-free polyurethane
foam, which reduces thermal losses to a minimum.
4The external casing is made of ABS.
4The tanks are protected against corrosion by one or more
magnesium anodes.
3.2 Solar domestic hot water calorifier
UBVT 200...400 SC
ASolar exchanger
ZAnode - Side inspection plate
EAnode - Top inspection trap
RElectrical back-up (Option)
TThermometer
All components are checked for leaks and tested in the
factory.
L000596-A
5
3
4
1
2
3. Technical description UBVT 200...400 SC UBVT 200...500 DC
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UBVT 200...500 DC
ASolar exchanger
ZBack-up exchanger
EAnode - Side inspection plate
RAnode - Top inspection trap
TElectrical back-up (Option)
YThermometer
All components are checked for leaks and tested in the
factory.
3.3 Technical specifications
3.3.1. Specifications of the solar calorifiers
UBVT 200 SC UBVT 300 SC UBVT 400 SC
Primary circuit: Solar exchanger
Maximum operating temperature °C 110 110 110
Maximum operating pressure bar 10 10 10
Exchanger capacity litres 8.1 10.1 12.1
Exchange surface m21.2 1.5 1.8
Secondary circuit (domestic water)
Maximum operating temperature °C 95 95 95
Maximum operating pressure bar 10 10 10
Water content litres 200 300 395
Solar volume litres 130 160 220
Top up volume (Electric) litres 95 130 170
Weight
Shipping weight - DHW calorifier package kg 95 113 140
UBVT 200 DC UBVT 300 DC UBVT 400 DC UBVT 500 DC
Primary circuit: Solar exchanger
Maximum operating temperature °C 110 110 110 110
Maximum operating pressure bar 10 10 10 10
Exchanger capacity litres 8.1 10.1 12.1 16.8
Exchange surface m21.2 1.5 1.8 2.5
Primary circuit: Back-up exchanger
(1) Primary temperature: 80 °C - Domestic cold water inlet: 10 °C - Domestic hot water outlet: 45 °C - Primary flow rate: 2 m3/h
(2) Primary temperature: 80 °C - Domestic cold water inlet: 10 °C - Domestic hot water outlet: 40 °C - Domestic hot water storage: 65 °C
L000597-A
6
4
5
1
3
2
UBVT 200...400 SC UBVT 200...500 DC 3. Technical description
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UBVT 200 DC UBVT 300 DC UBVT 400 DC UBVT 500 DC
Maximum operating temperature °C 110 110 110 110
Maximum operating pressure bar 10 10 10 10
Exchanger capacity litres 5.1 6.8 6.8 6.8
Exchange surface m20.76 1 1 1
Pressure drop at 2 m3/Time kPa 4 5 5 5
Secondary circuit (domestic water)
Maximum operating temperature °C 95 95 95 95
Maximum operating pressure bar 10 10 10 10
Water content litres 200 300 395 500
Top up volume litres 75 105 150 170
Solar volume litres 130 160 220 305
Top up volume (Electric) litres 95 130 170 190
Weight
Shipping weight - DHW calorifier package kg 106 128 159 186
Performance Primary circuit: Back-up exchanger
Power exchanged(1) kW 24 30 30 30
Performance
Flow per hour (∆T = 35 °C(1) litres per hour 590 740 740 740
Transfer capacity over 10 minutes (∆T =
30°C)(2)
litres per 10 min. 150 210 270 320
Cooling constant Cr Wh/24h·L·K 0.23 0.2 0.18 0.15
Maintenance consumption (ΔT=45K) kWh/24h 1.8 2.2 2.6 3
Performance NL 0.7 1.3 2.8 3.8
(1) Primary temperature: 80 °C - Domestic cold water inlet: 10 °C - Domestic hot water outlet: 45 °C - Primary flow rate: 2 m3/h
(2) Primary temperature: 80 °C - Domestic cold water inlet: 10 °C - Domestic hot water outlet: 40 °C - Domestic hot water storage: 65 °C
3.3.2. Magnesium anodes
UBVT 200 SC UBVT 300 SC UBVT 400 SC
Top inspection trap 1x33x330 1x33x450 1x33x450
Side inspection plate 1x33x180 1x33x180 1x33x290
UBVT 200 DC UBVT 300 DC UBVT 400 DC UBVT 500 DC
Top inspection trap 1x33x330 1x33x450 1x33x450 1x33x530
Side inspection plate 1x33x290 1x33x330 1x33x420 1x33x530
3. Technical description UBVT 200...400 SC UBVT 200...500 DC
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4 Installation
4.1 Regulations governing installation
CAUTION
Installation of the appliance must be done by a qualified
engineer in accordance with prevailing local and national
regulations.
CAUTION
The installation must comply in all matters to the standards
and rules which govern the work and interventions in
individual and collective homes, and other constructions.
4.2 Package list
4.2.1. Standard delivery
The delivery includes:
4One DHW calorifier.
4Installation, User and Service Manual.
Description Pack no.
UBVT 200 SC ER348
UBVT 300 SC ER350
UBVT 400 SC ER352
UBVT 200 DC ER349
UBVT 300 DC ER351
UBVT 400 DC ER353
UBVT 500 DC ER354
4.2.2. Accessories
Various options are available depending on the configuration of the
installation:
UBVT 200...400 SC UBVT 200...500 DC 4. Installation
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Description Pack no.
Domestic hot water thermostatic mixing valve EG78
Connection kit for thermostatic mixing valve and calorifier with
7-bar safety unit
ER404
1500-W electrical resistor with adjustable thermostat ER395
2300-W electrical resistor with adjustable thermostat ER396
3000-W electrical resistor with adjustable thermostat ER397
4.3 Choice of the location
4.3.1. Data plate
AUBVT 200...500 DC
BUBVT 200...400 SC
The rating plate must be accessible at all times.
The rating plate identifies the product and provides the following
information:
4DHW calorifier type
4Manufacturing date (Year - Week)
4Serial number.
4.3.2. Location of the appliance
The solar calorifier is installed close to the back-up heating system
(boiler, heat pump).
The installer must respect the following instructions:
4Install the appliance in frost-free premises.
4Place the appliance on a base frame to facilitate cleaning of the
premises.
4Install the appliance as close as possible to the drawing off points
in order to minimise energy losses through the pipes.
L000400-A
A
B
4. Installation UBVT 200...400 SC UBVT 200...500 DC
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4.3.3. Main dimensions
nLegend
ADomestic hot water outlet G1"
ZCirculation G¾"
EExchanger inlet G1"
RDomestic hot water sensor G1"
TExchanger outlet G1"
YDomestic cold water inlet + Drain opening G1"
USolar exchanger inlet G1"
ISolar exchanger outlet G1"
OPosition solar sensor
GExterior cylindrical threading, sealed by sheet gasket
UBVT 200 SC UBVT 300 SC UBVT 400 SC
A287 286 304
B753 887 858
C70.5 70.5 66.3
E1080 1397 1214
G1323.5 1694 1560
H1422.5 1795.5 1671.5
I (Ø) 610 610 710
UBVT 200 DC UBVT 300 DC UBVT 400 DC UBVT 500 DC
A287 286 304 302.6
B753 887 858 948
C70.5 70.5 66.3 71
D900 1127 994 1133
E1080 1397 1219 1358
F1170 1487 1309 1448
G1323.5 1694 1560 1665.7
H1422.5 1795.5 1671.5 1787
I (Ø) 610 610 710 760
UBVT 200...400 SC UBVT 200...500 DC 4. Installation
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nUBVT 200 SC - UBVT 300 SC - UBVT 400 SC
nUBVT 300 DC - UBVT 300 DC - UBVT 400 DC - UBVT 500
DC
L000392-A
C
E
G
H
A
B
I
1
12
10
7
9
8
6
2
11
L000397-A
C
D
E
F
G
H
A
B
I
1
12
10
7
9
4
8
3
5
6
2
11
4. Installation UBVT 200...400 SC UBVT 200...500 DC
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4.4 Positioning the appliance
CAUTION
4Have 2 people on hand.
4Handle the appliance with gloves.
1. Remove the packaging from the DHW calorifier, leaving the
calorifier on the pallet used for transport.
2. Remove the protective packaging.
3. Remove the 3 screws securing the calorifier to the pallet.
4. Lift the DHW calorifier and place it in its final position, respecting
the distances shown on the diagram.
4.5 Levelling
The DHW calorifier is levelled using the 3 feet (delivered in the
instructions pack) to be screwed to the bottom of the DHW calorifier.
1. Mount the 3 adjustable feet under the appliance.
2. Level the appliance using the adjustable feet.
4Adjustment range: 10 mm.
4Use metal blocks under the feet of the calorifier if
necessary.
CAUTION
Do not place the blocks on the exterior sides of the
domestic hot water calorifier.
4.6 Installing the temperature sensors
¼See sensor location: "Main dimensions", page 14
1. Insert the sensor into the sensor tube with the help of the sensor
tube separator.
The sensor tube separator is provided in the instructions bag.
2. Check that the sensors are correctly positioned in the sensor
tube.
3. Check the mounting of the sensor tube separator.
4.7 Hydraulic installation diagram
4.7.1. Legend
350
200
200
L000545-C
L000382-A
1
2
L000383-A
1
2
3
UBVT 200...400 SC UBVT 200...500 DC 4. Installation
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33-bar safety valve
4Pressure gauge
7Automatic air vent
8Manual bleed valve
9Isolating valve
10 3-way mixing valve
11 Heating pump
11a Pump with automatic electronic control for direct heating
circuit (must be connected to M AUX on the boiler panel)
11b Pump for heating circuit with mixing valve (must be
connected to M on the valve option board - box FM 48)
13 Flush valve
16 Expansion vessel
17 Drain cock
18 Heating circuit filling (with disconnector depending on
prevailing regulations)
21 Outside temperature sensor
23 Mixing valve outlet temperature sensor
24 DHW calorifier exchanger primary inlet
25 DHW calorifier heat exchanger primary outlet
26 DHW pump
27 Non-return valve
27a Antithermosiphon valve
28 Domestic cold water inlet
29 Pressure reducer
30 Safety unit
32 D.H.W. loop back pump
33 Temperature sensor
35 Low loss header
44 65° safety thermostat with manual reset for heated floor
(France: DTU 65.8, DTU 65.14)
46 3-way directional valve with reversal motor
50 Disconnector
51 Thermostatic valve
56 Domestic hot water circulation loop return
57 Domestic hot water outlet
61 Thermometer
64 Circuit A: direct heating circuit (example: radiators)
65 Circuit B: Heating circuit with mixing valve, heating circuit
which may be at low temperature (heated floor or
radiators)
84 Stop valve with releasable non-return valve
4. Installation UBVT 200...400 SC UBVT 200...500 DC
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85 Primary solar circuit pump
87 6 bar safety valve (0.6 MPa)
88 Solar expansion vessel
89 Heat transfer fluid container
109 Domestic hot water thermostatic mixing valve
112a Solar sensor probe
112b Solar domestic hot water calorifier sensor
114 Primary solar circuit filling and draining device
115 Thermostatic distribution valve for each zone
126 Solar regulator
129 Pre-insulated pipes
130 Manual bleed degasser
131 Flat or tubular solar panel
133 Interactive remote control
UBVT 200...400 SC UBVT 200...500 DC 4. Installation
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4.7.2. Diagram with a wall-hung gas boiler or a
heat pump
L000384-C
46
16
11
27
3
4. Installation UBVT 200...400 SC UBVT 200...500 DC
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