Vaillant 824/2 E, 828/2E, 620/2 E, 624/2 E, 837E, 628/2E, 637 E, 615/2E, 824 E, 615 E, 620 E, 828 E, 624 E, 628 E, 642/2E, 637 Instructions For Installation Manual
Supplied By www.heating spares.co Tel. 0161 620 6677
1 List of contents
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R14
1.2 Contents included with boiler (thermoCOMPACT)
Ensure that all contents are included before
commencing installation.
Note!
DO NOT remove the boiler from the polystrene
base at this stage.
Fig. 1.2: Items supplied with unit (thermoCOMPACT)
9
8
7
1
6
5
2
10
11
VRC-VC
C
o
0
I
C
o
3
4
1 List of contents
1.1 Contents included with boiler (turboMAX plus)
Ensure that all contents are included before
commencing installation.
Note!
DO NOT remove the boiler from the polystrene
base at this stage.
Fig. 1.1: Items supplied with unit (turboMAX plus)
4
10
9
8
1
2
7
6
11
12
VRC-VC
C
o
0
I
C
o
3
5
Item QuantityDescription
11Boiler
21Flue restriction ring
31Controls cover door
41 Lower cover plate (packed in bottom
packaging)
51 Cold water inlet valve
63Flow and return service value, gas service
valve
75Copper tails for gas and water pipework
81 Template
92Guarantee Card and Benchmark log book
101Installation and connection accessories and
PRV packages incl. DHW outlet union nut
113Installation and Servicing, Users and Flue
Installation Instructions
121Hanging bracket
Item QuantityDescription
11Boiler
21Flue restriction ring
31Controls cover door
41 Lower cover plate (packed in bottom
packaging)
53Flow and return service value, gas service
valve
63Copper tails for gas and water pipework
71Template
82Guarantee Card and Benchmark log book
91 Installation and connection accessories and
PRV packages
103Installation and Servicing, Users and Flue
Installation Instructions
111Hanging bracket
Page 5
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Introduction 2
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R15
2 Introduction
2.1 General Information
Note!
This boiler must be installed and serviced by a
competent person in accordance with the Gas
Safety (Installation and Use) Regulations 1998.
In the UK "CORGI“ registered installers
undertake the work to a safe and satisfactory
standard.
turboMAX plus boiler
The turboMAX plus is a fully automatic, wall mounted,
room sealed combination boiler for central heating and
domestic hot water. Domestic hot water is supplied
directly from the boiler, without requiring a copper
cylinder, cold water tank, feed and expansion tank and
associated pipework. Domestic hot water has priority
over central heating.
The turboMAX plus range consists of models with
outputs for domestic hot water of 24 kW , 28 kW and 37
kW. All turboMAX plus boilers are available in Natural
Gas. The 24 and 28 kW versions are also available in
LPG.
turboMAX plus combination boilers incorporate a
warmstart facility that keeps the domestic hot water
heat exchanger hot, providing an instantaneous delivery
of domestic hot water.
The temperature in the domestic hot water heat
exchanger is limited by the boiler control system and it
is not necessary to install a scale reducer on the cold
mains to the boiler.
However, in exceptionally hard water areas to prevent
scale formation in the property hot water system
pipework, a scale reducer may be fitted.
The heating system can be filled using the built-in filling
loop contained within the boiler.
thermoCOMPACT boiler
The thermoCOMPACT is a fully automatic, wall mounted,
room sealed system boiler for central heating and
domestic hot water (where a separate indirect hot water
storage cylinder is also incorporated in the system).
The thermoCOMPACT range consists of models with
outputs of 15, 20, 24, 28 kW and 37 kW.
All thermoCOMPACT boilers are available in Natural Gas.
The 20 and 28 kW versions are also available in LPG.
2.2 General Notes
The boilers have been designed for use with a sealed
central heating system, and come fully tested and
assembled with a built in circulating pump, expansion
vessel and diverter valve (turboMAX plus only). The
boilers are not suitable for use on open vented systems.
The boilers are easily sited on any internal wall and can
be installed with either a horizontal or vertical RSF
(room sealed fan assisted) flue. Two types of flue
systems are available, the standard concentric flue
system (100 mm outside diameter) and a larger
diameter concentric flue system (125 mm outside
diameter) which allows longer flue lengths to be
achieved. Flue extensions and additional bends and
elbows are available for both flue systems to increase
the siting flexibility.
There is also a 100 mm diameter concentric flue
accessory which connects to the alternative rear flue
outlet on the boiler for direct through the wall
installations. The boilers are not suitable for external
installation. If desired, an inhibitor may be used in the
system. Guidance on the use of inhibitors is contained in
these instructions.
All boilers have a built in diagnostic system which
indicates the operational status of the boiler.
This feature provides key information to aid
commissioning and fault finding.
The data badge is fitted on the rear of the control panel.
See text of General Requirements for installation
requirements or notes.
Vaillant Ltd. support the Benchmark initiative.
Within the information pack, you will find a Benchmark
Log Book. It is very important that this is completed
correctly at the time of installation, commissioning and
handover to the user.
2.3 EC designation
turboMAX plus (824/828/837) and thermoCOMPACT
boilers (615/620/624/628/637) carry the "CE" Mark. This
demonstrates that the boilers fulfil the essential
requirements of the Gas Appliance
Directive(90/396/EEC) and the Gas Appliance (Safety)
Regulations 1992.
The "CE" Mark also demonstrates that the boilers
comply with the requirements of the Electromagnetic
Compatibility Directive (89/336/EEC), the Low Voltage
Directive (72/23/EEC), the Boiler Efficiency Directive
(92/42/EEC) and the Boiler (Efficiency) Regulations
1993.
Page 6
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3 Boiler Specification
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R16
turboMAX plus turboMAX plus turboMAX plus
824/2 E 828/2 E837 EUnits
(VUW GB 242/2-5) (VUW GB 282/2-5) (VUW GB 362/2-5)
Maximum CH heat input (net)26.7 (91,200)31.1 (106,200)31.1 (106,200)kW (Btu/h)
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3 Boiler Specification
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R18
Key:
1Heating system return (22 mm tail)
2Gas connection (15 mm tail)
3Heating system flow (22 mm tail, 22 mm for 637)
4Flue outlet (100 mm flue with turret)
5Hanging bracket
6Rear flue outlet
3.4 Functional Diagram (turboMAX plus)
Fig. 3.3: Functional Diagram turboMAX plus
Key:
1Air duct
2Fan
3Main heat exchanger
4Temperature sensor (NTC I)
5Flame sensing electrodes
6Modulating burner
7Fully modulating automatic gas value
8Maximum hot water temperature control
9Maximum radiator temperature control
10Diverter valve
11DHW heat exchanger
12Automatic bypass valve
13CH flow service valve
14Hot water outlet
15Gas service valve
16Cold water service valve
17CH return service valve
18Pressure relief valve
19Aqua sensor (DHW flow switch)
20Temperature sensor (NTC III)
21Main on/off control
u
C
C
i
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
16
18
19
20
21
22
23
24
25
26
27
28
29
30
31
3.2 Boiler connections (turboMAX plus)
Fig. 3.1: Connection diameters turboMAX plus
Key:
1Heating system return (22 mm tail)
2Cold water connection with shut off valve
(15 mm tail)
3Gas connection (15 mm tail, 22mm for 837)
4Hot water connection (15 mm tail)
5Heating system flow (22 mm tail)
6Flue outlet (100 mm flue with turret)
7Hanging bracket
8Rear flue outlet
3.3 Boiler connections (thermoCOMPACT)
Fig. 3.2: Connection diameters thermoCOMPACT
7
543 21
102
6
8
264
638
902
145
6
5
100
100
5555
432
130
180
1
80
6
100
8
145
7
130
5
432
264
102
902
638
543 21
3535
100
6
180
1
Page 9
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Boiler Specification 3
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R19
Key:
1Air duct
2Fan
3Main heat exchanger
4Temperature sensor (NTC I)
5Flame sensing electrodes
6Modulating burner
7Fully modulating automatic gas value
8This control has no function on this boiler
9Maximum radiator temperature control
10Automatic bypass valve
11CH flow service valve
12Gas service valve
13CH return service valve
14Pressure relief valve
15Main on/off control
16Pressure gauge
17Display
18Expansion vessel
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4 General Requirements
4.2 Boiler location
The location chosen for the boiler must permit the
provision of a satisfactory flue termination. The location
must also provide adequate space for servicing and air
circulation around the boiler. The boiler may be installed
in any room, although particular attention is drawn to
the requirements of BS7671 (IEE Regulations), the
electrical provisions of the Building Regulations
(Scotland) and in IE the current edition of IS 813 and the
current ETCI rules, in respect of the installation of a
boiler in a room containing a bath or shower.
Note!
Where a room sealed boiler is installed in a room
containing a bath or shower, any electrical
switch or boiler control utilising mains
electricity should be so situated that it cannot
be touched by a person using the bath or
shower.
Where the installation of the boiler will be in an unusual
location, special procedures may be necessary and BS
5546 and BS 6798 give detailed guidance on this
aspect. The boiler must be mounted on a flat, vertical
wall, which must be sufficiently robust to take the
weight of the boiler. The boiler may be installed on a
combustible wall, subject to the requirements of the
Local Authorities and Building Regulations.
A compartment used to enclose the boiler must be
designed and constructed specifically for this purpose.
(An existing cupboard or compartment may be used
provided that it is modified for the purpose). Details of
essential features of cupboard/compartment design
including airing cupboard installations are given in BS
6891. In IE the current edition of IS 813.
If the boiler is to be fitted in a timber framed building, it
should be fitted in accordance with Institute of Gas
Engineers Publication IGE/UP/7/1998 "Guide for Gas
Installation in Timber Framed Housing“.
4.3 Gas Supply
The gas supplier should ensure the availability of an
adequate supply of gas.
A gas meter may only be connected to the service pipe
by the supplier of gas or their contractor.
An existing meter should be checked to ensure that it is
capable of passing the rate of gas supply required.
Installation pipes should be fitted in accordance with BS
6891. Pipework from the meter to the boiler must be of
an adequate size. Do not use pipes of a smaller size than
the boiler gas connection (15 mm, 22 mm for 837/637).
The complete installation must be tested for soundness
and purged as described in BS 6891.
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R110
4 General Requirements
4.1 Related Documents
The installation of the boiler must be in accordance with
the relevant requirements of Gas Safety (Installation and
Use) Regulations 1998, Health and Safety Document No.
635 (The Electricity at Work Regulations 1989), BS7671
(IEE Wiring Regulations) and the Water Supply (Water
Fittings) Regulations 1999, or the Water Bylaws 2000
(Scotland). It should also be in accordance with the
relevant requirements of the Local Authority, Building
Regulations, Building Regulations (Scotland), Building
Regulations (Northern Ireland) and the relevant
recommendations of the following British Standard;
Including current amendments to Approved Documents
Part L and J.:
BBSS55444400::
Flues and ventilation of gas fired boilers not
exceeding 70 kW net:
- Part 1: Flues
- Part 2: Ventilation
BBSS55444499::
Specification for forced circulation hot water
for domestic premises.
BBSS55554466::
Specification for gas hot water supplies for
domestic premises.
BBSS66770000::
Services supplying water for domestic use
within buildings and their curtilages.
BBSS66779988::
Specification for installation of gas fired
boilers not exceeding 70 kW input net.
BBSS66889911::
Specification for installation of low pressure
gas pipework up to 28 mm (R1) in domestic premises
(2
nd
family gas).
BBSS77559933::
Tre atment of water in domestic hot water
central heating systems.Institute of Gas Engineers
Publication IGE/UP/7/1998: Guide for Installation in
Timber Framed Housing. Benchmark Code of Practice.
Building Regulations Approved Documents Part L 2002
Part J 2002.
Important!
The appliance must be installed and serviced by
a competent person as stated in the Gas Safety
(Installation and Use) Regulations 1998. In IE,
the installation must be in accordance with the
current edition of IS 813 'Domestic Gas
Installations', the current Building Regulations
and reference should be made to the current
ETCI rules for electrical installation.
Preliminary remarks
This appliance should only be installed in conjunction
with a Vaillant flue system.
Install the flue system as detailed in the separate flue
installation instructions supplied with this boiler.
Page 11
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General Requirements 4
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R111
4.4.2 Rear outlet flue system
(100 mm outside diameter)
The rear outlet horizontal flue system (Art. No. 303 817)
is suitable for installations up to 600 mm wall thickness.
Fig. 4.3: Art.-No. 303 817
4.4.3 Extended top outlet flue system
(125 mm outside diameter)
A top outlet horizontal flue system of 125 mm outside
diameter is also available (Art. No. 303 609) and can be
used to achieve flue lengths of up to 12.9 m for 15/20/24
kW; 10 m for 28/37 kW.
Both 45° and 90° bends and elbows are also available to
increase siting flexibility.
A vertical 125 mm concentric flue system is also
available (Art. No. 303 600).
Refer to flue system installation instructions for full
details.
Fig. 4.4: Art.-No. 303 609
70
1103
70
15
4.4 Flue system
Note!
The boilers are delivered ready for installation
utilising a top outlet flue assembly. For
installation with a rear outlet flue assembly
refer to the boiler flue outlet adaptation in the
flue instructions.
4.4.1 Top outlet flue system
(100 mm outside diameter)
The top outlet horizontal flue system (Art. No. 303 807)
is suitable for installations up to 720mm measured
from the centre of the boiler flue outlet to the outside
face of the wall. Flue extensions are available to extend
this length up to 5.3 m for 15/20 kW; 4.5 m for 24 kW
and 3.2 m for 28/37 kW.
Both 90° bends and 45° elbows are also available to
increase siting flexibility.
A vertical flue system is also available (Art. No. 303
800).
Refer to flue system installation instructions for full
details.
Fig. 4.1: Art.-No. 303 807
A vertical flue system is also available (Art. No. 303
800).
Refer to flue system installation instructions for full
details.
Fig. 4.2: Art.-No. 303 800
48
1285
603
750
48
4
48
750
Page 12
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4 General Requirements
1) In addition, the terminal should not be nearer than 150mm to an
opening in the building fabric formed for the purpose of
accommodating a built-in element such as a window.
* BS 5440-1 It is recommended that a fanned flue terminal should
be positioned as follows: a) at least 2m from an opening in a
building directly opposite, and b) so that the products of
combustion are not directed to discharge across a boundary.
4.5 Air supply
Detailed recommendations for air supply are given in BS
5440: Part 2.
It is not necessary to have an air vent in the room or
internal space in which the boiler is installed.
4.6 Cupboard or compartment ventilation
The boilers are very high efficiency appliances. As a
consequence the heat loss from the appliance casing
during operation is very low. For cupboard or
compartment installations it is therefore not necessary
to provide any high or low level permanent air vents for
cooling purposes.
4.7 Electrical supply
A 230 V, ~ 50 Hz single phase electricity supply fused to
3 Amp. must be provided in accordance with the latest
edition of BS7671 (IEE Wiring Regulations) and any other
local regulations that may apply. In IE, reference should
be made to the current edition of the ETCI rules.
The method of connection to the mains electricity
supply must provide a means of completely isolating the
boiler and its ancillary controls. Isolation is preferably by
the use of a fused three pin plug and unswitched
shuttered socket outlet, both complying with the
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R112
4.4.4 Flue termination
The following details refer to both flue systems.
a. The terminal must be positioned such that the pro-
ducts of combustion can disperse freely at all times.
b. In certain weather conditions a plume of water
vapour may be visible from the flue terminal.
Positions where this could be a nuisance should be
avoided.
c. If the terminal is fitted less than 2 m above a
balcony, above ground or above a flat roof to which
people have access then a suitable terminal guard;
must be provided and fitted (Model K3 - made by
Tower Flue Components, Tonbridge, TN9 1TB).
Note!
Vertical flues must not terminate within
600 mm of an openable window, air vent or any
other ventilation opening.
The flue assembly shall be so placed or shielded as to
prevent ignition or damage to any part of the building.
Fig. 4.5: Flue termination
A
BCD
A
G
H, I
F
J
B
F
M
L
L
K
K
G
G
F
F
E
A
A
Terminal position for fan-assisted flue
(minimum distance)mm
A1)Directly below an openable, above an opening
or horizontal to an opening i.e. air brick, opening
window or other, etc300
BBelow gutters, soil pipes or drain pipes25
CBelow eaves25
DBelow balconies (below car port roof)25
EFrom vertical drain pipes and soil pipes25
FFrom internal or external corners25
G Above ground or balcony level300
HFrom a surface or boundary facing a terminal600*
HFrom a terminal facing a terminal1200
JFrom an opening in a car port (e.g. door, window)
into a dweling1200
KVertically from a terminal on the same wall1500
L Horizontally from a terminal on the same wall300
M Distance from adjacent wall for vertical Flue500
Page 13
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General Requirements 4
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R113
(Alternative methods of filling sealed systems are given
in BS 5449).
4.8.3 Pressure relief valve
A pressure relief valve is provided with the boiler. This
safety device is required on all sealed C.H. systems and
is preset at 3 bar and provided with a 15 mm
compression connection for a discharge pipe, which
must be of no less than 15 mm in diameter. The Pressure
Relief Valve must not be used for draining purposes.
4.8.4 Pressure gauge
This is factory fitted to the boiler and indicates the
primary circuit pressure to facilitate filling and testing.
4.8.5 Expansion vessel
The 15 and 20 kW thermoCOMPACT boilers as well as
the 24 kW turboMAX plus boiler incorporate a 6 litre
expansion vessel which is suitable for a sealed heating
system with a maximum water content of 60 litres. A
10 litre expansion vessel kit is available as an optional
accessory for for the turboMAX plus 24 kW boiler and
the 15 and 20 kW thermoCOMPACT boilers.
The 28, 37 turboMAX plus and 24, 28, 37 kW
thermoCOMPACT boilers incorporate a 10 litre expansion
vessel which is suitable for a sealed heating system with
a maximum water content of 100 litres.
If the nominal capacity of the built in expansion vessel is
not sufficient for the heating system (for instance in
case of modernization of old open systems) an
additional expansion vessel can be installed external to
the boiler. It should be fitted in the return pipe as close
as possible to the boiler in accordance with BS 5449:
Part 1.
Guidance on the sizing of an additional expansion vessel
is given in Table on page 14.
requirements of BS 1363. Alternatively, a 3 Amp. fused
doublepole switch with a 3 mm contact separation on
both poles may be used.
Important!
This appliance must be earthed.
4.8 Guide to system requirements
4.8.1 Water circulation system
Detailed recommendations for the water circulation
system are given in BS 6798 and BS 5449: Part 1 (for
small bore and micro bore central heating systems).
Pipework not forming part of the useful heating surface
should be insulated to help prevent heat loss and
possible freezing, particularly where pipes are run
through roof spaces and ventilated underfloor spaces.
Draining taps must be located in accessible positions
which permit the draining of the whole system including
the boiler and the hot water system. Draining taps
should be at least 1/2 in. BSP nominal size and be in
accordance with BS 2879.
The boiler is suitable for use with minibore or microbore
systems. Copper tubing to BS 2871: Part 1 should be
used for water carrying pipework. All capillary joints in
all DHW pipework must be made with lead free solder.
Particularly where a new boiler is to be fitted to an
existing system, it is good practice that the system is
thoroughly cleansed. This cleansing should take place
prior to the fitting of the new boiler and be in
accordance with BS 7593.
For advice on the application of system cleansers
contact either Sentinel, GE Betz. Widnes, Cheshire,
WA8 8UD.
Tel: 0151 420 9595
or:
Fernox
Alpha-Fry Technologies
Tandem House
Marlow Way, Beddington Farm Road
Croydon CRO 4xS
Tel. 0870 601 5000
Fernox technical
help line 01799 550811
4.8.2 Filling and make up
The system can be filled using the built in filling loop
(turboMAX plus only) or via a separate filling point fitted
at a convinient position on the heating circuit
(thermoCOMPACT). The connection must be removed
when filling is completed. Where local Water Authority
regulation does not allow temporary connection, a
sealed system filler pump with break tank must be used.
The heating system will not be filled automatically from
the domestic hot water side.
Page 14
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4 General Requirements
Fig. 4.6: Pump specifications 37 kW
4.8.7 System by-pass
An automatic system by-pass is included within the
boiler. The boiler is suitable for use in systems with
thermostatic radiator valves and no additional by-pass is
required.
4.8.8 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.
50054.578.0
For system volumes other than those given
above, multiply the system volume by the
factor across0.1090.156
Page 15
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Boiler Installation Sequence 5
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R115
Selecting position of boiler
Refer to "Boiler location“ for information regarding
siting the appliance. In general the boiler must be
positioned such that.
•There is adequate space around the boiler for service
and maintenance.
•The boiler can be correctly flued, i.e. the flue terminal
position is sited in accordance with the flue
termination section and the air/flue duct can be
installed in accordance with the flue installation
instructions supplied.
• All necessary pipework can be connected, including
the pressure relief valve.
Note!
Should it be necessary to run system pipework
to above the boiler within the width of the
casing, use the optional top connection
accessory (Art.No. 306 251).
5 Boiler Installation Sequence
5.1 General
Preparation of boiler location
Clearances required
Mount the boiler on a flat and vertical area of wall of
sufficient area for the boiler plus the required
clearances for installation and servicing.
The clearances are as detailed below and are shown on
the installation template supplied with the boiler:
- 150 mm below the boiler
- 5 mm on either side of the boiler
- 210 mm on top of the boiler
- 500 mm in front of the boiler*
* Clearance is only required to enable easier access to
the boiler for servicing and may be provided by an
openable door, etc.
Note!
If the boiler is to be fitted in a timber framed
building, it should be fitted in accordance with
Institute of Gas Engineers Publication
IGE/UP/7/1998 "Guide for Gas Installations in
Timber Framed Dwellings“.
Fig. 5.1: Dimensions of boiler
Fig. 5.2: Free space required for installation
440
800
338
Page 16
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5 Boiler Installation Sequence
Note!
Use alternative fixing holes where necessary.
Identify correct flue exit
Mark the centre of the selected air/flue duct and its
circumference, e.g. by drilling through the template. For
installation of a rear exit outlet please refer to the
installation instructions of the rear exit outlet kit
(Art. No. 303 817).
Other flue options
Flue instructions for other flue systems such as vertical
RSF flues, flues run to the side of the boiler and the use
of additional bends etc. are detailed in the flue
installation instructions provided with the boiler.
Remove the template from the wall and plug the drilled
holes using the wallplugs supplied.
5.3 Fitting the boiler hanging bracket
Fix the hanging bracket (1) to the wall using the screws
supplied (2). (it may be necessary to use additional or
alternative fixings to ensure adequate support).
Fig. 5.4: Free space required for installation
Note!
If the boiler is to be fitted in a timber framed
building ensure that the bracket is secured to a
substantial part of the timber frame capable of
taking the weight of the boiler.
3
402
171
174,5
12,5
1
1
2
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R116
5.2 Using boiler template
Fix the paper template to the wall ensuring that the
correct flue exit point has been identified, ensure that
the template is vertical.
The template shows
- The position of the fixing holes for the boiler
mounting bracket (1).
- The position of the connections.
- The position of the flue exit hole.
- Upper hole (2) indicates top outlet flue with flue
turret facing rearward.
• Mark the position of the hanging bracket fixing holes
(1).
• Drill 2 holes Ø 8 mm for the hanging bracket.
Fig. 5.3: Using Boiler template
5
5
210
124163 21200/202/240/242/280/282/824/828 Pro/Plus
60/100
07/2002
210
2
3
1
turboMAX only
Page 17
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Boiler Installation Sequence 5
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R117
5.7 Gas supply (turboMAX plus)
•Connect the 15 mm compression gas service cock (1)
and 15 mm copper outlet tail (22mm copper tail with
837) (3) as supplied with the appliance (2) and tighten.
•Connect a gas supply pipe of not less than 15 mm
diameter to the copper tail (minimum 22 mm gas
supply pipe with 837).
•Tighten all connections.
(Ensure the gas supply pipework is adequately sized
such that a 20 mbar gas pressure is available at the
boiler inlet at full flow rate).
Fig. 5.6: Fitting the gas connection turboMAX plus
I
0
3
1
2
5.4 Install the flue system
Fit the flue restrictor to the boiler (if required) and
install the flue system (refer to separate air/flue duct
installation instructions for further information).
5.5 Fitting the boiler
• Lift the boiler (3) up to the wall so that it is slightly
above the hanging bracket (1).
Note!
Lift the boiler from either side at the bottom
edge.
•Lower the boiler slowly onto the hanging bracket so
that the cross member at the rear of the boiler fully
engages onto the hanging bracket.
5.6 Removing boiler casing
•Turn both securing fasteners (1) anti-clockwise by 90°
to release control panel (2).
• Pull the case (3) forward at the bottom to disengage
from the securing clips.
• Lift the case slightly to clear the top locations and pull
forward to remove.
Fig. 5.5: Remove of boiler casing
VRC-VC
3
I
0
2
I
0
90°90°
1
Page 18
Supplied By www.heating spares.co Tel. 0161 620 6677
5 Boiler Installation Sequence
5.9 Central heating flow and return pipework
(turboMAX plus)
Before connecting the heating circuit to the boiler
appliance, all pipework and radiators must be thoroughly
flushed to remove any installation debris.
•Connect the central heating flow (6) and return (1)
service valves to the appliance (8 and 3) with the
washers provided (2 and 7) and tighten the nuts.
Ensure that the valve spindles face downwards and
the drain points face to either side of the boiler.
•Connect the 22 mm copper pipe tails to the service
valves as shown in the illustration and tighten the
nuts.
•Connect the central heating pipework to the flow (9)
and return (4) tails.
Pressure Relief Valve
Connect a discharge pipe not less than 15 mm diameter
to the outlet of this valve.
The discharge pipework should be as short as possible
and installed with a continuous fall away from the boiler.
The pipe should terminate in a position which ensures
that any discharge of water or steam from the valve
cannot create a hazard to persons in or about the
premises, or cause damage to any electrical components
or external wiring, and the point of discharge should be
clearly visible (see diagram in plastic bag).
Fig. 5.8: Central heating flow and return pipework turboMAX
plus
9
I
0
4
1
2
3
8
7
6
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R118
5.8 Cold water mains inlet and hot water outlet
(turboMAX plus)
Flush all foreign matter from the mains supply before
connecting to the boiler.
•Connect the cold water service valve (1) to the cold
inlet water connection (3) of the appliance with the
washer (2) provided and tighten.
•Connect the 15 mm cold water inlet pipe copper tail
(4) to the cold water service valve (1) and tighten.
•Connect the 15 mm hot water outlet copper tail (6) to
the hot water outlet connection of the appliance (8)
with the washer provided (7) and tighten.
Note!
The hot water outlet union nut is packed in with
the PRV fitting pack.
•Connect the cold water service pipe and hot water
outlet pipework to the copper tails.
Fig. 5.7: Fitting the hot and cold water connections turboMAX
plus
1
2
3
4
6
7
8
I
0
Page 19
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Boiler Installation Sequence 5
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R119
5.11 Central heating flow and return pipework
(thermoCOMPACT)
Before connecting the heating circuit to the boiler
appliance, all pipework and radiators must be thoroughly
flushed to remove any installation debris.
•Connect the central heating flow (6) and return (1)
service valves to the appliance (8 and 3), with the
washers (2 and 7) provided and tighten the nuts.
Ensure that the valve spindles face downwards and
the drain points face to either side of the boiler.
•Connect the 22 mm copper pipe tails to the service
valves as shown in the illustration and tighten the
nuts.
•Connect the central heating pipework to the flow (9)
and return (4) tails.
Pressure Relief Valve
Connect a discharge pipe not less than 15 mm diameter
to the outlet of this valve.
The discharge pipework should be as short as possible
and installed with a continuous fall away from the boiler.
The pipe should terminate in a position which ensures
that any discharge of water or steam from the valve
cannot create a hazard to persons in or about the
premises, or cause damage to any electrical components
or external wiring, and the point of discharge should be
clearly visible (see diagram in plastic bag).
Fig. 5.10: Central heating flow and return pipework
thermoCOMPACT
9
I
0
4
1
2
3
8
7
6
5.10 Gas supply (thermoCOMPACT)
•Connect the 15 mm compression gas service cock (1)
and 15 mm copper outlet tail (22 mm copper tail with
637) (3) as supplied with the appliance and tighten.
•Connect a gas supply pipe of not less than 15 mm
diameter to the copper tail (minimum 22 mm with
637).
•Tighten all connections.
(Ensure the gas supply pipework is adequately sized
such that a 20 mbar gas pressure is available at the
boiler inlet at full flow rate).
Fig. 5.9: Fitting the gas connection thermoCOMPACT
I
0
3
1
2
Page 20
Supplied By www.heating spares.co Tel. 0161 620 6677
5 Boiler Installation Sequence
Fig. 5.11: Wiring system
Fig. 5.12: Exposed rear view of switchgear cabinet (picture
shows turboMAX appliance)
•Connect the power supply cord as follows (Fig. 5.13).
Green/yellow (earth) wire: boiler terminal Earth sign
Blue (neutral) wire: boiler terminal N
Brown (live) wire: boiler terminal L
Note!
DO NOT use boiler terminal connections 7-8-9.
•Refit the terminal box cover by pushing into place
until it clips back into position.
•Raise the control panel and secure in place.
2
1
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R120
5.12 Connection to a VANTAGE unvented cylinder
(thermoCOMPACT)
•For connecting a Vaillant VANTAGE unvented cylinder
please refer to the VANTAGE installation instructions
provided with the cylinder.
5.13 Connect the flue system to the boiler
•Refer to separate air/flue duct installation instructions
included with the boiler.
5.14 Electrical installation
General requirements
Important!
All electrical work shall be carried out by a
competent person and shall comply with
BS7671 (IEE Regulations).
The boiler is supplied for connection to 230 V, ~ 50 Hz
supply fused at 3 A rating.
Connection to the mains supply shall be made via a
fused 3 pin plug to an unswitched shuttered socket,
both complying to the requirements of BS1363.
(Alternatively, connection may be made via a 3 A fused
double pole isolator having a contact separation of at
least 3 mm in all poles and supplying the boiler and
controls only).
The point of connection to the mains supply must allow
complete electrical isolation of the boiler and its
ancillary controls. It should be readily accessible and
adjacent to the boiler. A 3 core flexible cord according
to BS6500 tables 6, 8 or 16 (3 x 0.75 to 3 x 1.5 mm
2
)
should be used.
Warning!
This appliance must be earthed.
Important!
Ensure that all cords pass through the cable
clamps in the rear of the control box and are
securely fixed. Ensure that the power supply is
connected such that the current carrying
conductors become taut before the earth
conductor should the supply cord slip from the
cable clamp.
Warning!
Mains connection terminals L and N remain live
even when the boiler on/off control is switched
off.
5.15 Connection to the main supply
•Lower the control panel.
• Unclip the terminal box cover (1) from the control
panel.
•Feed the power supply cord in to the appliance as
shown (fig 5.11).
•Use cable clamps.
3
RT 24V230VRT 230V
NL987543
Page 21
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Boiler Installation Sequence 5
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R121
Abb. 0.0 Bildunterschrift
Fig. 5.13: Connection wiring
NL987
F3
543
24V
230V
F1
5.16 Electronic board layout
Socket X2 for internal unit components
Socket X4 for diverter valve
Socket X7 for accessory box connection
Socket X8 for VRC-VC connection
Room thermostat, 230 V: connections 3, 4 and 5
Mains power supply: connections L, N and earth
Socket X12: pump connection
Socket X14: gas valve connection
Socket X13: fan connection
Do not use!
Socket for fan control cable (637 and 837 only)
Page 22
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5 Boiler Installation Sequence
Connection details for external time switches and
boiler terminal strip.
Fig. 5.15 shows the connection details where a time
switch is used without a room thermostat to control the
boiler.
Attention!
The arrowed numbers indicate connection into
the relevant terminal in the boiler terminal strip.
If a room thermostat is to be connected in addition to a
time switch the wire between the time switch "ON“
terminal and boiler terminal 4 should be broken by the
contacts of the room thermostat (see schematic layout,
Fig. 5.16).
Vaillant optional plug in timer accessories
Refer to the instructions supplied with the optional
accessories for connection details.
Upon completion of all electrical connections refit the
terminal box cover by pushing into place. The cover is
secured by two locking clips.
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R122
Fig. 5.15 Connection details for time switch
LN
234
LN3
4
1
ACL Drayton
Tempus 1, Tempus 2
Lyfestyle LP111, LP711
ACL Drayton
Switchmaster
SM300
ACL Drayton
Switchmaster 980
Danfoss Randall
103 Series
Danfoss Randall
Set 1E, TS975
Danfoss Randall
TS715
Grässlin Towerchron
QE1, QM1
Honeywell
ST610A, ST6100C
Horstmann
Channel Plus
H11, H17, 425 Coronet
Horstmann
Centaur Plus
C11, C17
LN
234
LN4
3
1
Potterton Myson
EP 4002, EP 5002
Smiths Timeguard
SupplyMASTER
FST11, FST17
Sunvic
Select 107
N1
AB C
N4
2
L
L
3
34
12
65E
4L3
N
3
E
NE
234
NE
1
L
L
3
56
4
LN
234
LN3
4
1
LN
234
LN3
4
1
LN
234
LN3
4
1
NE
234
NE
1
L
L
3
56
4
NE
234
NE
1
L
L
3
4
LN
234
LN3
4
1
LN
234
LN3
4
1
AB
DL N
LN
C
N
E
3
12
4
345E
12
4
432/L
1/N
3
65
mains supply
LNE
E
Landis & Staefa
RWB7, RWB30
5.17 Controls (turboMAX plus boiler)
External electrical controls
The boiler terminals 3, 4 and 5 are for connecting
external electrical controls such as a time switch and/or
room thermostat.
Te rminals 3 and 4 are linked together when the boiler is
supplied. If external controls are used, this link must be
removed and the controls connected across terminals 3
and 4.
Terminal 5 is an additional neutral connection for
external neutrals such as from the anticipator of a room
thermostat.
Connection of external controls
Connection details for programmable room
thermostats.
Fig. 5.14 shows the connection details where a
programmable room thermostat (time switch with built
in room thermostat) is used to control the boiler.
Attention!
The arrowed numbers indicate connection into
the relevant terminal in the boiler terminal strip.
Fig. 5.14 Connection details for programmable thermostats
LN
234
LN3
4
1
ACL Drayton
Lyfestyle PT271, PT371
ACL Drayton
Digistat 2, 3, 4
ACL Drayton
Digistat RF - SCR Receiver
Danfoss Randall
TP4, TP5, TP5E
Danfoss Randall
TP5E RF with receiver RX1
Danfoss Randall
TP75
Grässlin Towerchron
RTC7
Honeywell
CM61, CM67, CM31, CM37
Horstmann
Centaurstat 1, 7
Landis & Staefa
REV 11, REV 15, REV 22
12
34
3
Sunvic
TLX 6501
Sunvic
TLX RFP, TLX RFD
Vaillant
VRT 230, 220
N1
3
N3
2
L
L
4
32
43
1
LN
234
LN3
4
1
BC
2341
A
3
56
4
12
34
3
AB
34
C
12
4
34
3
LL1
34
Smiths Timeguard
ProgramaSTAT PRT11, PRT17
LN
4
LN
3
34
12
34
3
LN
234
LN3
4
1
3
45
3
45
Page 23
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Boiler Installation Sequence 5
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R123
Fig. 5.16
5.18 Controls (thermoCOMPACT boiler)
External electrical controls
The boiler terminals 3, 4 and 5 are for connecting
external electrical controls such as a programmer, room
thermostat, etc.
Te rminals 3 and 4 are linked together when the boiler is
supplied. If external controls are used, this link must be
removed, and the controls connected across terminals 3
and 4.
Terminal 5 is an additional neutral connection for
external controls.
Connection of external electrical controls
Connection details using an external wiring centre
The boiler should be connected to the system controls
using an external wiring centre. Fig. 5.17, 5.18 shows
connection details for a system utilising a 3 port mid
position motorised valve, figure 5.19, 5.20 shows the
connection details for a system utilising two 2 port
motorised valves connected via an external wiring
centre (Important: the arrowed numbers indicate
connection into the relevant terminal of thre external
wiring centre).
3
987
MAINS
SUPPLY
230 V
50 Hz
L
L
LN
N
N
N
20 VDC
DO NOT USE IN UK!
3 A FUSE
SWITCH
CONTACTS
ROOM
THERMOSTAT
CLOCK
4
5
Fig. 5.17
Key:
XCentral heating on
YHot water on
ZHot water off
Connection details for control systems utilising 3 port motorised valve
via external wiring centre/junction box
Diagram only applies to the specific controls mentioned
LN
LN
345
ENL
X** Y** Z**
3 amp fused
main supply
THERMOcompact
terminal strip
Programmer
for programmer connections see fig. 16.b
LN
LN
345
E53678
External wiring centre/junction box*
345678910
NNL
L
*Do not use pre-wired printed circuit board type
not used
EARTH BLUE
BROWN
OR
WHITE
GREY ORANGE
3 Port mid position motorised valve
4E589
ECA
N
4
N
4
2
4
4
3
3
3
3
3
2
2
2
2
1
1
L
2
1
L
1
1
1
1
3
CB
E
E
E
E
Vaillant VRT 9090
ACL Drayton Digistat 2, 3, 4
ACL Drayton RTS 1, 2
Danfoss Randall RX-1
Danfoss Randall RMT 230
Danfoss Randall RET 230
Tower SS
Honeywell T6360
Horstmann HRT 1
Siemens-Landys & Staefa RAD 1
Sunvic TLX 2000 series
5 9 6 L N E
Room thermostat
21C
YL
3
3
2
2
BK
1
2
2
1
1
RED
C
1
1
3
ACL Drayton HTS3
Danfoss Randall ATC
Tower CS1
Honeywell L641
Horstmann HTC1
Siemens-Landis & Staefa RAM 1
Sunvic SA 2452
8 4 7 E
Cylinder thermostat
3E
2
E
** see key below
Fig. 5.18
NL
234
53 8
76
1
not used
Lifestyle LP241, LP 522, LP 722
Tempus 6, Tempus 7
Danfoss Randall CP 715, FP715
Note: *Earth not required
Danfoss Randall Set 2E, Set 3E
Note: *Earth not required,
Link L - 2 - 5
Grässlin Towerchron QE2
Honeywell ST699B, ST799A
Note:Link L - 5 - 8
Honeywell ST6200, ST6300, ST6400
Horstmann Channel Plus H21, H27
Note:*Ear th not required,
Link L - 2 - 5
Siemens-Landis & Staefa RWB2, RWB9
Potterton Myson EP 2002, EP 3002, EP 6002
Note:Link L - 5
Sunvic Select 207
NL
234
53 8
76
1
E
NL
234
53 8
76
1
E
*
NL
234
53 7
86
1
E
*
56
NL
234
53 8
76
1
N3
567
56
78
4
L
3
8
NL
234
53 8
76
1
NL
234
53 7
86
1
E
*
56
NL
234
53 8
76
1
NL
234
53 8
76
1
NL
234
53 8
76
1
E
5
not used
not used
not used
not used
not used
not used
not used
not used
not used
not used
Page 24
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5 Boiler Installation Sequence
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R124
5.19 Thermostatic radiator valves
The boiler has a built in automatic bypass valve making
it ideal for use in systems with thermostatic radiator
valves (no separate system bypass is required).
For optimum fuel economy it is recommended that
where TRV’s are used they are used in conjunction with
a programmable room thermostat or separate timer and
room thermostat to ensure complete boiler shut down
when the heating demand is satisfied. (The radiator in
the room containing the room thermostat should not be
fitted with a TRV).
5.20 Frost protection
The boiler has an integral frost thermostat which is
designed for protection of the boiler.To protect remote
or exposed parts of the heating system or property
additional frost protection measures must be taken such
as the installation of an external frost thermostat. This
frost thermostat should be connected across the boiler
terminals 3 and 4, in parallel with any external heating
controls. External frost protection cannot be used when
plug in timers have been fitted.
5.21 Circulating pump
The boiler incorporates a built in circulating pump that
is fully prewired (no additional wiring is necessary). The
pump incorporates an automatic overrun period after
the boiler switches off.
5.22 Anti-cycling ‘economiser’ control
The boiler incorporates a built in anti-cycling control to
ensure that energy wasteful short cycling of the boiler
cannot occur. This control prevents the boiler from reigniting for a preset period of 5 minutes after central
heating operation (the hot water operation is unaffected
by this control and hot water can be drawn at any time).
Note!
To temporarily override the anti-cycling control
turn the main boiler on/off switch to the off
position “0“ and then back to the on position
“I“ after a few seconds.
Automatic pump spin control (APS)
The boiler incorporates a built in control which will spin
the built in circulating pump and operate the diverter
valve (turboMAX only) once in a 24 hour period. This
control helps to prevent seizure when the boiler is not
operated for a period of time. This control is not active
when the power supply to the appliance is turned off.
Fig. 5.19
Key:
XCentral heating on
YHot water on
ZHot water off
Connection details for control systems utilising 2 x 2 port motorised valves
via external wiring centre/junction box
Diagram only applies to the specific controls mentioned
LN
LN
345
N L
X** Y** Z**
3 amp fused
main supply
THERMOcompact
terminal strip
Programmer
for programmer connections see fig. 16.d
LN
LN
345
5367 8
External wiring centre/junction box*
345678910
NNL
L
*Do not use pre-wired printed circuit board type
not used
EARTH BLUE BROWN GREY ORANGE
Hot water 2 port motorised valve
4E5310
ECA
N
4
N
4
2
4
4
3
3
3
3
3
2
2
2
2
1
1
L
2
1
L
1
1
1
1
3
CB
E
E
E
E
Vaillant VRT 9090
ACL Drayton Digistat 2, 3, 4
ACL Drayton RTS 1, 2
Danfoss Randall RX-1
Danfoss Randall RMT 230
Danfoss Randall RET 230
Tower SS
Honeywell T6360
Horstmann HRT 1
Siemens-Landys & Staefa RAD 1
Sunvic TLX 2000 series
5 9 6 L N E
Room thermostat
21C
YL
3
3
2
2
BK
1
2
2
1
1
RED
C
1
1
3
ACL Drayton HTS3
Danfoss Randall ATC
Tower CS1
Honeywell L641
Horstmann HTC1
Siemens-Landis & Staefa RAM 1
Sunvic SA 2452
10 7 E
Cylinder thermostat
3E
2
E
E
EARTH BLUE BROWN GREY ORANGE
Central heating 2 port motorised valve
4E539
** see key below
Fig. 5.20
NL
234
53
not used
76
1
not used
Lifestyle LP241, LP 522, LP 722
Tempus 6, Tempus 7
Danfoss Randall CP 715, FP715
Note: *Earth not required
Danfoss Randall Set 2E, Set 3E
Note: *Earth not required,
Link L - 2 - 5
Grässlin Towerchron QE2
Honeywell ST699B, ST799A
Note:Link L - 5 - 8
Honeywell ST6200, ST6300, ST6400
Horstmann Channel Plus H21, H27
Note:*Ear th not required,
Link L - 2 - 5
Siemens-Landis & Staefa RWB2, RWB9
Potterton Myson EP 2002, EP 3002, EP 6002
Note:Link L - 5
Sunvic Select 207
NL
234
53
not used
76
1
not used
NL
234
53
not used
76
1
E
5
not used
NL
234
53
76
1
E
not used
not used
NL
234
53
76
1
not used
E
*
not used
NL
234
53 7
6
1
E
*
not used
56
not used
NL
234
53
76
1
not used
not used
N3
567
56not used
7
4
L
3
8
not used
NL
234
53
76
1
not used
not used
NL
234
53 7
6
1
E
*
not used
56
not used
NL
234
53
76
1
not used
not used
Page 25
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Commissioning Part I 6
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R125
6 Commisioning Part I
6.1 Preliminary electrical checks
Check the electrical installation by carrying out short
circuit, earth continuity and resistance to earth tests
and a check for correct polarity.
6.2 Gas supply
The complete gas installation including the gas meter
must be inspected, tested for soundness and purged in
accordance with BS 6891. In IE the current edition of IS
813.
The gas supply to the boiler can be purged by
slackening the gas service valve beneath the boiler.
Ensure that there is adequate ventilation, extinguish all
naked flames and do not smoke whilst purging.
After purging, the gas service valve connection must be
retightened and tested for soundness. (The boiler itself
does not require purging as this will be done by the
automatic burner sequence control).
6.3 Cold water supply (turboMAX plus only)
Open all domestic hot water taps supplied by the boiler,
turn on the mains water supply to the boiler and open
the mains water isolating valve below the boiler.
Water will now flow through the boiler to the hot taps.
Starting with the lowest tap supplied, turn the hot taps
off one at a time until the hot water pipework is purged
of air.
Check all hot and cold water pipework for leaks.
6.4 Filling the heating system (turboMAX plus)
Proceed as follows to fill the system:
• Open all radiator valves on the system.
• Check flexible filling loop is connected.
•Locate the filling valve handle on the cold water inlet
filling valve as shown (1).
• Open valve (1) fully.
•Remove filling valve handle and locate on return filling
valve (2).
• Open the valve slowly and fill the unit with water until
the required pressure has been acheived (3).
•Turn off valve (2).
•Remove valve handle and refit on cold water inlet
filling valve (1).
•Fully close valve (1).
•Bleed the air from the radiators.
•The boiler is equipped with an automatic air release
valve. To allow this to vent the boiler, the cap top must
be slackened by 1 - 2 turns. (This cap must be left
slackened during operation to ensure any residual air
or system gases are released).
Fig. 6.1: Fit boiler casing
3
1
90°
2
Page 26
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6 Commissioning Part IGas supply adjustments (Com. Part II) 7
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R126
7 Gas supply adjustments
7.1 Gas inlet working pressure
To check the gas inlet working pressure:
•Lower the front panel of the boiler.
•Lower the control panel.
• Slacken the sealing screw (1) located at measuring
point ”P.IN”.
•Attach U-gauge to the inlet test point on the gas valve
(2).
• Ensure that the gas service valve is open.
•Turn off the boiler at the main ON/OFF control.
•Press and hold the ”+” button, while pressing the
button turn the main ON/OFF control to the ”1” ON
position.
•Continue holding ”+” button until display alternates
between ”P1” and ”P2”. Release ”+” button.
•Press ”+” button until ”P1” (full gas rate) is shown in
display.
•Press ”i” button to operate boiler at full gas rate.
• Check that the U-gauge is reading in the range
between 18 and 20 mbar. If the pressure is not within
this range this should be investigated before
continuing with the commissioning procedure. Lower
pressures than this range are indicative of an
incorrectly sized or partially blocked gas supply.
•Switch off the boiler at the main ON/OFF control.
•Remove U-gauge, tighten test point sealing screw (1).
•Test for soundness.
•Record appliance working gas inlet pressure (mbar) in
the Benchmark Installation, Commissioning and
Service Log Book.
Fig. 7.1: Gas inlet working pressure
1
1
2
6.5 Filling the heating system (thermoCOMPACT)
The boiler and the heating system should be filled using
a filling method as described on page 13.
• Ensure that the boiler CH service valves are open.
•Partially open the filling valve and allow water to
enter the system. Starting with the lowest radiator,
open the radiator air release until water (clear of
bubbles) is emitted.
•Repeat this at all radiators until the complete system
is full, all air locks have been cleared and the boiler
pressure gauge reads 1.5 bar. Release any air from the
pump by slackening the centre screw.
•The boiler is equipped with an automatic air release
valve. To allow this to vent the boiler, the cap on the
top must be slackened by 1 - 2 turns. (This cap must
be left slackened during boiler operation to ensure
any residual air or system gases are released).
• Check the heating system and boiler connections are
sound.
6.6 Initial system flush (“cold“)
The whole of the heating system must be flushed out at
least twice: once cold, and once hot as instructed later.
Open all radiator and heating valves and the boiler CH
service valves and drain the heating system and boiler
completely from the lowest points of the system via 1/2”
BSP drain taps (opened full bore to remove any
installation debris prior to lighting the boiler).
Refill the heating system.
Check the operation of the pressure relief valve by
rotating the knob on the valve.
Now check the water pressure in the unit again (and add
more water if necessary).
Page 27
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Gas supply adjustments (Commissioning Part II) 7
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R127
7.2 Main burner pressure
The burner pressure on this appliance has been factory
set and does not require adjustment. To check the main
burner pressure connect the U-Gauge as follows
depending on the gas type.
•Remove front case and combustion chamber cover.
Note!
All measurements and adjustments to the gas
valve must be done with the combustion
chamber cover removed.
For natural gas appliances:
• Slacken the sealing screw (1) at test point on the gas
valve and attach one arm of a U-gauge (2) to the test
point.
For LPG appliances:
• Slacken the sealing screw (1a) at test point on the
burner inlet gas pipe and attach one arm of a U-gauge
(2a) to the test point.
Fig. 7.2
1
1a
2
2a
Connection for Natural gas
Connection for LPG
•Turn off the boiler at the main ON/OFF control.
•Press and hold the ”+” button, while pressing the
button turn the main ON/OFF control to the ”1” ON
position.
•Continue holding ”+” button until display alternates
between ”P1” and ”P2”. Release ”+” button.
•Press ”+” button until ”P1” is shown in the display. ”P1”
indicates the maximum gas rate and ”P2” indicates
the ignition rate.
•Press ”i” button to operate boiler at maximum gas
rate.
Check that the burner pressure is correct as shown in
table 7.1 for the appropriate boiler. To cancel selected
”P1” or ”P2” mode press the ”i” and ”+” buttons
simultaneously.
turboMAX plus only
Measure the domestic hot water burner operating
pressure (mbar), the heat input (kW), the inlet/outlet
domestic hot water temperatures (°C) and flow rate
(l/min) by fully opening a hot water tap and record
details in the boiler logbook.
thermoCOMPACT only
Record the heat input in the boiler logbook.
After completion of all tests tighten sealing screw,
and check all test points for soundness (1/1a).
7. 3 Adjusting the central heating output
(range rating)
The boilers are fully modulating for central heating, and
it is therefore not necessary to range rate the boiler.
However, if desired, it is possible to range rate the boiler,
as follows:
•Connect the U-gauge to check burner pressure.
•Use Table 7.1 (page 31-32) on to determine the central
heating output required.
•Note the burner pressure setting.
•Turn on the central heating.
• Ensure that any thermostatic radiator valves are open
and set to high.
• Simultaneously press and release the ”+” and ”-”
buttons to activate burner pressure mode.
•The boiler will light at the factory set nominal gas rate.
Attention!
DO NOT open any hot water tap while carrying
out this procedure (turboMAX plus only).
• Check that the U-gauge reading corresponds to the
maximum burner pressure as detailed on the table.
• Identify required range rating setting and note main
burner pressure in mbar for that output.
•Adjust central heating output range as shown on page
29.
Page 28
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7 Gas supply adjustments (Commissioning Part II)
Note!
Following adjustment of the central heating
output, the new output can be checked using
the gas rate table as detailed.
Fig. 7.3: Using burner pressure to check and adjust the heating
system partial load (picture shows a turboMAX plus boiler)
Note!
This illustration shows the U-tube pressure
gauge connected to a system configured to run
on natural gas. When connecting the U-tube
pressure gauge to a system running on LPG,
please refer to Fig. 7.2 on page 27.
• Simultaneously press the ”i” and ”+” buttons keys.
•Keep the ”+” button pressed until ”d.0” is displayed.
(The display runs from ”d.0” to ”d.99” before
restarting again at ”d.0”.)
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R128
•Press the ”i” button and a value between 1 and 15 will
be displayed.
•Use the ”+” or ”-” buttons to increase or decrease the
value. Observe the U-gauge as the button is pushed
and stop pushing when the required main burner
pressure has been achieved.
•After setting, press and hold the ”i” button for five
seconds - or until the display stops flashing. The new
setting value is now memorised. The new main burner
pressure can now be checked. If the new output is not
correct repeat steps 3 to 5.
•To return to normal mode, press the ”i” and ”+”
buttons simultaneously.
The adjustment mode is also cancelled if no button is
pushed for a period of four minutes.
•Record central heating operating pressure in the
Benchmark Log Book along with the heat input (kW)
and temperature difference between flow and return.
1
~ 5 s
Page 29
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Gas supply adjustments (Commissioning Part II) 7
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R129
7. 4 Adjusting to the maximum heat load
(nominal load)
• Undo screw and remove the cap (1)
turboMAX only:
•Set the DHW temperature control to maximum and
fire the boiler at full rate by fully opening a hot water
tap.
thermoCOMPACT only:
•Turn off the boiler at the main ON/OFF control.
•Press and hold the ”+” button, while pressing the
button turn the main ON/OFF control to the ”1” ON
position.
•Continue holding ”+” button until display alternates
between ”P1” and ”P2”. Release ”+” button.
•Press ”+” button until ”P1” (full gas rate) is shown in
display.
•Press ”i” button to operate boiler at full gas rate.
•Using a 10 mm spanner turn nut (2) to adjust the
burner operating pressure.
-Turn the nut (2) clockwise to increase the nominal
load
-Turn the nut (2) anticlockwise to decrease the nominal
load.
•Adjust the burner pressure until it matches the
maximum output as detailed.
•Now turn the 10 mm nut (2) anticlockwise until the
burner pressure drops by approx. 0.3 - 0.4 mbar.
Nominal load is now correctly adjusted.
•Refit the plastic cap (1).
Attention!
The plastic cap (2) must be fitted for the gas
valve assembly to function correctly.
turboMAX only:
•Turn off the hot water tap.
thermoCOMPACT only:
•To cancel selected ”P1“ or ”P2“ mode press the ”i“ and
”+“ buttons simultaneously.
Fig. 7.4: Adjusting the ignition rate
1
2
7.5 Adjusting the ignition rate
• Undo screw and remove the cap (1).
turcoMAX only:
• Disconnect the modulating coil wires from the gas
valve, set the DHW temperature control to maximum
and fire the boiler at full rate by fully opening a hot
water tap.
thermoCOMPACT only:
•Turn off the boiler at the main ON/OFF control.
•Press and hold the ”+” button, while pressing the
button turn the main ON/OFF control to the ”1” ON
position.
•Continue holding ”+” button until display alternates
between ”P1” and ”P2”. Release ”+” button.
•Press ”+” button until ”P2” (ignition rate) is shown in
display.
•Press ”i” button to operate boiler at full gas rate.
•Use a suitably sized screwdriver to turn the inner
screw (2).
•Turn the screw (2) clockwise to increase the ignation
rate
•Turn the screw (2) anticlockwise to decrease the
ignation rate
•Adjust the burner pressure until it matsches the
ignition rate as detailed on page 31 or 32.
turboMAX only:
•Turn off the hot water tap and reconnect the wires to
the modulating regulator.
thermoCOMPACT only:
•To cancel selected “P1“ or “P2“ mode press the “i“ and
“+“ buttons simultaneously.
Note!
If installing/commissioning a turboMAX plus
837 or a thermoCOMPACT 637 boiler go to page
30.
Attention!
The main burner pressure must be rechecked
after adjusting the ignition rate.
Refit cap (1) and replace screw. Re-check ignition and
main burner pressures. After completion of these tests
tighten the sealing screw and check all joints and test
points for soundness.
Page 30
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7 Gas supply adjustments (Commissioning Part II)
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R130
7.6 Checking the gas valve mid setting point
(turboMAX plus 837 and thermoCOMPACT 637
only)
To ensure the most efficient operation of the boiler a
gas valve mid setting point is necessary.
This mid setting point has been factory set and
adjustment of this point is only required after
exchanging either the electronic circuit board or gas
valve or converting the boiler to another gas type.
To check the mid setting point proceed as follows.
•Turn off the boiler at the main ON/OFF control.
•Press and hold the ”+” button, while pressing the
button turn the main ON/OFF control to the ”I” ON
position.
•Continue holding ”+” button until display starts to
alternate between the P numbers (P1, P2, P3, P11, P12
and P13).
Release ”+” button.
•Press ”+” button until ”P3 ” (mid setting point) is
shown in display.
•Press ”i ” button to operate boiler at mid setting
point.
•The burner pressure should now read the mid setting
point pressure for the gas type used, as detailed in
the table below.
7.7 Setting or adjusting the mid-setting point
Turn off the boiler at the main ON/OFF control.
•Press and hold the ”+” button, while pressing the
button turn the main ON/OFF control to the ”I” ON
position.
•Continue holding ”+” button until display starts to
alternate between the P numbers (P1, P2, P3, P11, P12
and P13).
Release ”+” button.
•Press ”+” button until ”P11” (for natural gas) or "P 13"
(for LPG) is shown in display.
•Press ”i ” button to operate boiler at mid setting
point.
•The mid setting point burner pressure is now adjusted
by pushing the "+" button until the gauge equals the
pressure as detailed in the table below.
Note!
The "-" button has no function in this mode, if
the required pressure is exceeded during set up,
this operation should be recommenced from the
beginning.
When the pressure is correct, to save the setting to
memory, press and hold the "i" button until the display
stops flashing.
To cancel selected mode press the "i" and "+" buttons
simultaneously.
Refit cap and replace screw. Re-check ignition and main
burner pressures. After completion of these tests
tighten the sealing screw and check all joints and test
points for soundness.
Gas typeMid setting point presure
Natural Gas (G20)5.3 mbar
LPG (G30/31)15.3 mbar
Program No.Gas typeMid setting point
P.1 1Natural Gas (G20)5.3 mbar
P.12Not applicable for GB -
P.13LPG (G30/31)15.3 mbar
Page 31
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Gas supply adjustments (Commissioning Part II) 7
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R131
Burner Pressure and gas rate
Burner Pressure thermoCOMPACT 615/2 E
Output[kW]
Gas typeIgnition rate6.58.010.012.014.0 15.0
Natural gas 2HBurner pressure1)[mbar]
Main burner jet mark
2)
for G20
2.22.23.24.76.68.79.9
7 / 120
LPG 3 B/P
Burner pressure1)[mbar]
Main burner jet mark
2)
for G304.14.16.29.613.618.120.6
7 / 072for G315.85.88.713.318.724.928.3
Burner Pressure thermoCOMPACT 620/2 EOutput[kW]
Gas typeIgnition rate 7.78.010.0 12.0 14.0 16.0 18.0 20.0
Natural gas 2HBurner pressure1)[mbar]
Main burner jet mark
2)
for G20
1.51.51.62.43.44.65.97.49.0
7 / 120
LPG 3 B/P
Burner pressure1)[mbar]
Main burner jet mark
2)
for G302.02.0 3.25.07.39.912.8 16.119.7
7 / 072for G314.34.34.57110.113.7 17.622.0 26.9
Burner Pressure thermoCOMPACT 624/2 E, turboMAX plus 824/2 EOutput[kW]
Setting-up program: P.13 mid. setting point pressure: 15.3 mbar
Table 7.1: Burner pressure
Table 7.2: Gas flow rate1) 15 °C, 1013mbar, dry
2) The nozzles are stamped with the mark shown in this table.
The marking corresponds to the nozzle hole diameter multiplied by 100
Page 33
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Gas supply adjustments (Com. Part II) 7
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R133
7. 8 Fit combustion chamber cover
Carefully re-fit the combustion chamber cover to the
boiler ensuring it is correctly sealed. Secure cover with
retaining clamps.
7.9 Fit boiler casing
•Carefully push case (1) onto the boiler such that the
locating points either side at the top of the boiler
engage. Push the casing onto the securing clips at the
bottom of the boiler.
• Close control panel (2).
•Secure control panel by turning both securing
fasteners (3) clockwise by 90°.
• Fit and close front door (4).
• Fit lower cover plate (5).
Fig. 5.21: Fit boiler casing
VRC-VC
1
4
2
I
0
90°90°
3
5
8 Functional Checks
8.1 Functional checks
Procedure
Once the unit has been installed and the gas supply has
been checked, operate the system to ensure that it is
working correctly.
• Operate the system, following the operating
instructions supplied with the boiler.
• Check the system for water leaks and escaping gas.
• Check that the flue has been correctly installed,
according to the fitting instructions supplied with the
flue assembly.
• Check the burner for correct ignition and flame
picture.
•
ttuurrbbooMMAAXXpplluussoonnllyy::
Check the hot water system
for correct operation.
• Check the heating system for correct operation.
Fig. 8.1 Test for correct functioning
8.2 Functional check of operation
(turboMAX plus only)
This boiler is fitted with indicator lights to display the
operating status of the boiler. The status of the
indicators in normal operation will be as follows.
Boiler in stand by mode
•Red lock out indicator (1) OFF.
•Yellow flame indicator (2) OFF.
•Green warmstart indicator (3):
- ON – Warmstart ON
- OFF – Warmstart OFF
Hot water operation
•Fully open hot water tap.
If boiler is operating correctly, the status of the
indicators will be as follows:
•Red lock out indicator (1) OFF.
I
0
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8 Functional Checks (Commissioning Part III)
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R134
•Yellow flame indicator (2) ON.
•Green warmstart indicator (3) FLASHING (hot water is
being drawn from the system).
Central Heating operation
• Operate the heating system.
If boiler is operating correctly, the status of the
indicators will be as follows:
•Red lock out indicator (1) OFF.
•Yellow flame indicator (2) ON (burner active).
•Green warmstart indicator (3) ON, OFF or FLASHING
(see above).
The LCD display indicates the flow temperature (in °C)
of the boiler in normal operation.
Fig. 8.2 Functional check turboMAX plus
8.3 Functional check of operation
(thermoCOMPACT only)
This boiler is fitted with indicator lights to display the
operating status of the boiler. The status of the
indicators in normal operation will be as follows.
Boiler in stand by mode
•Red lock out indicator (1) OFF.
•Yellow flame indicator (2) OFF.
•Green indicator (3) has no function.
Central Heating/hot water operation
• Operate the heating/hot water system.
If boiler is operating correctly, the status of the
indicators will be as follows:
•Red lock out indicator (1) OFF.
•Yellow flame indicator (2) ON (burner active).
•Green indicator (3) OFF.
The LCD display indicates the flow temperature (in °C)
of the boiler in normal operation.
Fig. 8.3 Functional check turboMAX plus
1
2
3
8.4 Adjusting pump speed
The unit is fitted with a two-speed pump. The pump is
delivered with the switch (1) set to position III (Fig. 8.4.).
Attention!
Important note:
The boiler should only be operated at pump
setting III because the heating capacity for hot
water is reduced when operated at pump
setting II!
It is possible, however, to change the pump setting from
Level III to Level II manually when there is noise coming
from the heating system.
Final system flush (“HOT“)
•Turn on the boiler for central heating and allow the
boiler and system to reach operating temperature.
• Check that the heating system is watertight.
•Turn the boiler off and rapidly drain both boiler and
system while still hot.
•Refill the system and release all air. Release water
from the system until the system design pressure of
1.0 bar is attained.
(The actual reading on the pressure gauge should
ideally be 0.5 bar plus an additional pressure
corresponding to the highest point of the system above
the base of the boiler - 10 m head equals an additional 1
bar reading on the pressure gauge. The minimum
pressure should not be less than 1 bar in any
installation.)
If the system is to be treated with an inhibitor it should
be applied at this stage in accordance with the
manufacturers instructions.
Fur ther information can be obtained from Sentinel,
GE Betz. Widnes, Cheshire, WA8 8UD.
Tel: 0151 420 9595
or
Fernox, Alpha-Fry Technologies,
Tel: 0870 6015000.
• Disconnect the temporary filling connection.
•Refit the boiler casing.
•Attach the bottom cover to the boiler. It may be
necessary to apapt the bottom cover by removing the
easy break sections.
1
3
2
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Functional Checks (Commissioning Part III) 8
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R135
Fig. 8.4: Pump speed
8.5 Handing over to the user
•Set the maximum radiator temperature control to the
desired setting.
•Set the maximum hot water temperature control to
the desired setting.
• Instruct the user in the safe and efficient operation of
the boiler, in particular the function of:
-The boiler on/off control
-The maximum radiator temperature control
-The maximum hot water temperature control
((ttuurrbbooMMAAXXpplluussoonnllyy))
-The pressure gauge
• Show the user how to operate any external controls.
• Explain to the user the importance of having the
boiler regularly serviced by a competent servicing
company. To ensure regular servicing, it is strongly
recommended that arrangements are made for a
Maintenance Agreement. Please contact Vaillant
Service Solutions (0870 6060 777) for further details.
• Ensure the boiler log book is fully completed and leave
with the end user. Failure to install and commission
this appliance to the manufacturers instructions may
invaludate the warranty (Note: This does not affect
your statutory rights).
•Leave the user instructions, the boiler log book and
the installation and servicing instructions with the
user.
1
9 Servicing
9.1 Initial Inspection
To ensure the continued safe and efficient operation of
the boiler it is recommended that it is checked and
serviced as necessary at regular intervals. The
frequency of servicing will depend upon the particular
installation conditions and usage, but in general once
per year should be adequate. It is the law that all servicing work is carried out by a competent person (Corgi
registered).
Improtant!
Before starting any maintenance work:
•Isolate the mains electricity supply by disconnecting
the plug at the socket outlet (if there is only an
isolating switch remove the fuse from the switch).
•Turn OFF the gas supply at the gas service valve fitted
to the boiler.
• Always test for gas soundness and always carry out
functional checks after any service work and after
exchanging any gas carrying component.
• Always check earth continuity, polarity and resistance
to earth with a multimeter after any service work and
after exchanging any electrical component.
Note!
The boiler is fitted with a combustion analysis
test points on the front of the combustion
chamber cover. A suitable combustion analyser
can be connected to these points to establish
the combustion performance of the boiler.
Before commencing any servicing or maintenance work,
carry out an initial inspection of the system as follows:
• Inspect the flue, pipework and electrical connections
for indications of damage or deterioration.
• Inspect the air supply and ventilation arrangements of
the installation.
• Check the heating and water system, in particular the
condition of radiator valves, evidence of leakage from
the heating system and dripping hot water taps.
Functional check of boiler operation
•Carry out a functional check of the boiler operation as
prevoiusly detailed.
•Remove the appliance casing as detailed and operate
the boiler by fully opening a hot water tap. Inspect the
burner operation through the viewing window. Check
that the flames are evenly covering the surface of the
burner. Inspect for signs of excessive flame lift or
sooting.
9.2 Cleaning the burner and primary heat exchanger
•Turn off the boiler.
•Isolate the electrical supply to the boiler.
•Remove the boiler case as described.
•Turn off the gas service valve.
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9 Servicing
•Turn off the boiler CH service valves.
•Turn off the cold water inlet service valve.
•Release the three clamps (1), remove the combustion
chamber cover (2).
9.2.1 For thermoCOMPACT 615, 637 and turboMAX
plus 837
•Remove the flue gas connector (2a) on the fan.
•Remove the retaining spring (3).
•
1155kkWW::
Pull the three cables (4) and two tubes (5) from
the fan assembly.
•
3377kkWW::
Remove both plugs (not illustrated) and both
hoses (5) from the fan.
•Remove the fan assembly (6).
•Remove the four screws (7) and detach the front cover
panel from the combustion chamber (8).
• Check the burner (9) and heat exchanger fins (10) and
remove any loose deposits with a soft brush.
9.2.2 For thermoCOMPACT 620, 624, 628,
turboMAX pro 24, 28 and turboMAX plus 824,
828
• Pull the three cables (4) and two tubes (5) from the
fan assembly.
•Remove the fan assembly (6a, 6b, 6c).
•Remove the four screws (7) and detach the front cover
panel from the combustion chamber (8).
• Check the burner (9) and heat exchanger fins (10) and
remove any loose deposits with a soft brush.
•Reassemble in reverse order.
Check central heating expansion vessel.
Note!
It is not necessary to carry out this check every
year – a check every three years should be
sufficient.
•Release the system water pressure from the boiler.
•Remove valve cap from expansion vessel charge point.
• Check that the internal charge pressure of expansion
vessel is between 0.7 - 0.9 bar. If pressure is lower
than this the vessel should be re-pressurised using an
air pump.
•Refit valve cap.
• Open central heating service valves and re-pressurise
the boiler and heating system if necessary.
• Open the gas service valve.
•Turn on the mains power supply.
• Operate the boiler and carry out soundness, safety
and function checks.
•Complete the service interval record section in the log
book and leave with the user.
Instructions for36
Fig. 9.1a Cleaning the burner and primary heat exchanger
(thermoCOMPACT 615, 637 and turboMAX plus 837)
Fig. 9.1b Cleaning the burner and primary heat exchanger
thermoCOMPACT 620, 624, 628, turboMAX pro 24,
28 and turboMAX plus 824, 828
6a
6b
7
9
10
8
2
1
5
5
4
6c
2
1
2a
3
4
4
8
4
5
5
6
10
9
7
Page 37
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Servicing 9
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R137
10.3 Indicator lights (thermoCOMPACT only)
The boiler control panel also contains three indicator
lights whose function is as follows:
•Red lock out indicator (1), when illuminated boiler is at
lock out.
•Yellow flame indicator (2), when illuminated main
burner is ignited.
•Green indicator (3) is illuminated but has no function.
10.4 Logical fault finding procedure
These checks must be carried out before attempting to
use the fault finding guide.
1. Carry out electrical safety checks (See Section
‘Preliminary Electrical Checks’).
2.Check that the external electricity supply to the boiler
is on, and a supply of 230 V~ is present between
boiler terminals ‘L’ and ‘N’.
3. Check that the gas supply to the boiler is on, that it
has been correctly purged and that an inlet pressure
of 20 mbar is available at the gas valve. (See Section
‘Gas Supply’).
4.Ensure the heating system is full of water and charged
to between 1 and 1.5 bar. If not, refill and vent the
system. (See Section ‘Filling the heating system’).
Ensure boiler flow and return service valves are open.
5.Check that the main ON/OFF control is set to the ‘ON’
position.
6.Set the central heating temperature to maximum.
7. Set the domestic hot water temperature to maximum
(turboMAX only).
8.Check that all external controls are on and calling for
heat (if, no external controls are fitted, boiler
terminals 3 and 4 must be linked). Check that the
boiler anti-cycling economiser is not engaged.
Procedure
Note!
Always check the operation of the boiler for
central heating first before checking hot water
operation. Do not open a hot water tap unless
instructed to do so by the fault finding guide
(turboMAX only).
1. If a fault code is showing in the boiler display follow
the fault finding charts referring also to the fault code
and diagnostic mode tables.
2.If the boiler is not functioning correctly and a fault
code is not showing in the boiler display follow the
fault finding charts referring also to the status mode
table.
Note!
If the boiler display is completely blank initially
check the two fuses (Isolate the electrical
supply before checking the fuses, spare fuses
are located on the inside of the control box rear
cover).
10 Fault Finding
10.1 Introduction
The turboMAX plus and thermoCOMPACT boilers have
an inbuilt advanced multifunction diagnostic display to
assist with fault finding in the unlikely event of a boiler
malfunction.
The display features the following four modes:
Normal Mode
Under normal conditions the boiler display will show the
boiler flow temperature, this indicates that the boiler is
operating correctly after an internal self check.
Status Mode
The status display is helpful in diagnosing faults where a
fault code is not displayed.
Diagnostic Mode
In order to assist with the pinpointing of a particular
fault it is possible to use the boiler display in a
diagnostic mode to interrogate the boiler about the
status of certain components.
Fault Mode
Should a fault develop in the boiler the display will show
a fault code indicating what the problem may be.
10.2 Indicator lights (turboMAX plus only)
The boiler control panel also contains three indicator
lights whose function is as follows:
•Red lock out indicator (1), when illuminated boiler is at
lock out.
•Yellow flame indicator (2), when illuminated main
burner is ignited.
•Green warmstart indicator (3):
Illuminated = Warmstart switched ON
Not illuminated = Warmstart is switched OFF and there
is no demand for hot water
Flashing = There is either a demand for hot water or
warmstart
Fig. 10.1 LED indicators
1
2
3
Page 38
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To access the various modes press the buttons on the
control panel as follows:
Note!
If no key is pressed for approx. 4 minutes the
display will automatically change back to
Normal mode.
10 Fault Finding
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R138
10.5 Status Modes
The status mode provides information about the current
operating status of the boiler.
To display status mode proceed as follows:
•Press the “i” button below the display, and a status
code will appear in the display indicating the current
operational status of the boiler (see table below).
To cancel the status code mode proceed as follows:
•Press the “i” button below the display
or
• Do not press any key for approximately four minutes.
•The display will now revert back to showing the
current flow temperature.
DisplayIndicationturboMAX plusthermoCOMPACT
S.00No heat demand (heating operation)xx
S.01Fan running (heating operation)xx
S.02Pump running – pre ignition (heating operation)xx
S.03Ignition sequence (heating operation)xx
S.04Burner ignited (heating operation)xx
S.05Fan and pump over run (837/637 only)xx
S.07Pump over run (heating operation)xx
S.08Anti cycling mode (heating operation)xx
S.10Hot water demand (hot water operation)x
S.11Fan running (hot water operation)x
S.13Ignition sequence (hot water operation)x
S.14Burner ignited (hot water operation)x
S.16Fan over run (hot water operation)x
S.17Pump over run (hot water operation)x
S.20Warmstart demand (warm start)x
S.21Fan running (warm start)x
S.23Ignition sequence (warm start)x
S.24Burner ignited (warm start)x
S.27Pump over run (warm start)x
S.28Anti cycling mode (warm start)x
S.30No heating demand from external controlsxx
S.31Summer mode (heating control knob in off position)xx
S.32Main heat exchanger anti freeze protection due to fan speed deviation x
too great (837/637 only)
S.33Check air/flue systemxx
S.34Frost protection modexx
S.36No heating demand from low voltage controlsxx
S.39Contact thermostat has been activated (under floor systems)xx
S.53Delay mode due to lack of water in system (~2,5 mins.)xx
S.54Delay mode due to flow temperature gradient too steep
(approx 10 mins.)xx
ModeStatus modeDiagnostic mode
To displayPress “i“ buttonPress the “i“ and
the reqiured mode“+“ button
simultaneously
To return to Press “i“ buttonPress the “i“ and
Normal mode“+“ button
simultaneously
Table 10.1: Status modes
Page 39
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Fault Finding 10
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R139
d.00Part load setting0 - 15 (0 - 30, 837/637 only)
d.01Water pump over run1, 2, 3, …60 min (factory adjusted setting: 5 min)
d.02Maximum burner anti cycling period at 20 °C flow temperature8 - 60 min (predelivery setting: 15 min)
d.05Flow temperature setting°C
d.07*1. Vantage hot water temperature (not applicable)1. 15 - 75 °C
2. Warmstart temperature setting (applies to turboMAX plus only)2. 40 - 65 °C
d.08External controls heat demand0 = open, no demand; 1 = closed, demand
d.10Pump status1 = ON; 0 = OFF
d.11External pump status1 = ON; 0 = OFF
d.21Flame rectification1 = ON; 0 = OFF
d.22*Domestic hot water demand1 = ON; 0 = OFF
d.23Summer/winter function (control knob)1 = winter; 0 = summer
d.24Air pressure switch1 = ON; 0 = OFF
d.25*Warmstart status (turboMAX plus)1 = ON; 0 = OFF
d.30Gas valve status 1 = ON; 0 = OFF
d.33Required value of the rotary speed of the fanr.p.m. (837/637 only)
d.34Actual value of the rotary speed of the fanr.p.m. (837/637 only)
d.35*Diverter valve position1 = hot water; 0 = heating system
d.37Modulator currentmA
d.40Actual flow temperature°C
d.41Current return temperature (837/637 only)in °C
d.50Maximum flow temperature°C
d.60Number over heat cut off operations
d.61Number of lock outss
d.64Average ignition times
d.65Maximum ignition times
d.67Remaining anti cycling periodmin
d.68Number of unsuccessful attempted 1st ignitions
d.69Number of unsuccessful attempted 2st ignitions
d.71Maximum target value for heating system flow temperature0 = 82 ° C ; 1 = 87 °C (factory setting: 82 °C)
d.72*Pump over run (for loading warmstart)0, 1, 2, … 250 s (factory-adjusted to: 80 s)
d.73*Offset warmstart temperature value-15, -14.......+5 K (factory-adjusted - 5 K)
d.75Maximum hot water priority operation time (Vantage only)20, 21, 22 … 90 min (factory-adjusted to: 30 min)
d.76Gas type set (837/637 only)H36 (nat gas) P36 (LPG) E36 (E+ gas).
Factory setting H36
d.80**Number of heating system operating hours (Total)h
d.81*Number of hot water system operating hours (Total)h
d.82Number of heating system cycles (Total)
d.83*Number of hot water system cycles (Total)
10.6 Diagnostic Modes
In order to assist with the pinpointing of a particular
fault it is possible to use the boiler display in a
diagnostic mode to interrogate the boiler about the
status of certain components.
•Press the “i“ and “+“ buttons below the display
simultaneously. The display will now show “d.00“.
•Use “+“ or “-“ buttons to scroll up or down to the
desired diagnosic number.
•Press “i“ button to display the corresponding
diagnosic information.
• If necessary, you can now alter the value by pressing
“+“ or “-“ buttons. (When altering values display will
flash). Press and hold the "i” button to save the value
to memory, when the value is saved the display will
stop flashing.
Diagnosic mode is cancelled as follows:
•Press the “i“ and “+“ buttons simultaneously
or
• Do not press any key for approximately four minutes.
The display will now revert back to showing the
current flow temperature.
Table 10.2: Diagnostic Modes * turboMAX plus only
Page 40
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10 Fault Finding
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R140
10.7 Fault codes
Fault codes take priority over all other display functions
in the event of a system fault occurring. If multiple
faults occur, the corresponding fault codes are displayed
alternately for about two seconds each.
10.8 Fault memory
The fault memory stores details of the ten most recent
faults.
•Press the “i“ and “-“ buttons simultaneously.
•Use the “+“ button to scroll back through the list of
memorised errors.
To cancel fault error memory display mode, proceed as
follows:
•Press the “i“ button below the display.
or
• Do not touch any key for about four minutes. The
display will now revert back to showing the current
flow temperature.
NTC broken; NTC cable broken; Defective connection at NTC
Defective connection at electronicsFlow-NTC cable defective/ broken NTC faulty
F. 01Return NTC:
NTC broken; NTC cable broken; Defective connection at NTC
Defective connection at electronicsReturn-NTC cable defective/broken NTC faulty
F.10Short circuit - flow-NTC (<130°C)NTC-plug shorted to casing, NTC defective
F.11Short circuit - return-NTC (<130°C)NTC-plug shorted to casing, NTC defective
F. 20Over heat cut off activatedMaximun temperature exeeded
F. 22Dry fire protectionNo water in appliance, pump cable defective, pump
blocked or defective, pump output too low
F. 23Dry fire protection (difference between flow and No water in appliance, pump cable defective, pump
return NTC's too large)blocked or defective, pump output too low
F. 24Dry fire protection (temperature gradient of flow NTC too steep). Air in boiler/system, pump blocked or defective, pump
output too low
F. 27No demand to gas valveElectronic board defective; Gas valve defective
F. 28Boiler goes to lock outNo gas; Isufficient gas; Incorrect gas valve
adjustment; Electrode defective; Ignition lead defect;
Electronic igniter defective
F. 29Flame extinguished re-ignition unsuccesfulGas supply absent or insufficient
F. 32Main heat exchanger anti freeze protection mode Check fan control cables/connections; Defective fan
(837/637 only) due to fan speed deviation too greatcontrol cable;
F. 33Main heat exchanger anti freeze protection mode Check air pressure switch, fan, fan supply or flue
(837/637 only) due to no switching signal from the air pressure switch system
F. 37The rotary speed of the fan is too high or too lowAir pressure switch defect; fan defect; electronics
defect
(837/637 only)
F. 41No setting for the type of gas is stored Set gas type in PCB (see page 30)
(837/637 only)
F. 42Faulty cable loomFaulty or incorrect loom fitted
F. 43Faulty cable loomFaulty or incorrect loom fitted
F.60Electronic faultElectronics defect
F. 61Electronic faultElectronics defect
F. 62Flame rectification present 4 secs. after gas valve turns offCheck gas valve, burner tubes and injectors or
electronics defect
F.63EMC faultEMC or electronics defect
F.64Sensor or electronics faultCheck NTC's/connections or electronics defect
F. 65PCB processor temperature too highCheck earth connection or electronics defect
F.66Display faultDisplay defect; fault in the connection to the display;
electronics defect
F. 67Electronic faultElectronics defect
Table St.2: Fault codes
Page 41
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Fault Finding 10
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R141
Ensure boiler main
ON/OFF control is set
to position "1"
Is there a display on
the LCD Panel?
YesGo to sheet C
Check electrical supply, appliance fuses and on/off control
No
Is 230VAC present across
terminals L and N?
Yes
Is 230VAC present across
terminals 3 and 5?
Yes
Is voltage between
16-26 VDC present across
terminals 8 and 9?
Yes
Is 5 VDC present between
5V and GND test points
on electronic board?
Replace LCD display
Yes
NoRepair external fault
Is the continuity
across fuse F1?
Go to sheet B
Does ON/OFF knob
operate switch on
electronic board
Boiler ON/OFF control
defective,
change electronic
board
Replace switch
mechanism
No
No
No
Yes
Yes
Note 1:
For test purposes, disconnect
external controls from terminal
3 - 4 and replace with a bridge
between these terminals.
It appliance then operates, the
fault is with the external controls.
Sheet A
Is there continuity
across fuse F3?
No
No
Replace electronic
board
No
Check transformer
Replace if
necessary
Yes
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10 Fault Finding
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R142
Sheet BCheck operation of pump and fan
Turn off the main ON/OFF control to the
"0" position
Disconnect the power supply to the boiler
Go to sheet A
Is there a display on the LCD panel?
Check transformer 230 VAC primary
(black/red) and approx. 17 VDC secondary
(blue/brown)
Check/replace pump
Replace fuse F1
If fan commences operation, exchange
gas valve
After approx. 20 secs.
Does fuse F1 blow?
Produce central heating demand.
Does fuse blow immediately?
Turn the main ON/OFF control to the "1"
position
Is t here a display on the LCD panel?
Yes
No
No
No
Yes
Check/replace fanReplace electronic board
No
Yes
Yes
Page 43
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Fault Finding 10
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R143
Check central heating and controls
Ensure that radiator temperature control knob
is set to vertical position and that any internal
timer (if fitted) is calling for heat
Check diagnostic code D.08 (see page
53). Is heating demand present?
No
Is 230 VAC present across terminals 4 and 5
No
External fault: Check all external controls are
calling for heat, replace or repair as necessary
(see also note 1 sheet A)
Yes
Yes
Does failure code show on LCD display?
Disconnect built in timer (if fitted)
NoGo to sheet D
Does ignition
commence?
No
Yes
Replace defective
timer
Sheet C
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10 Fault Finding
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R144
Does fan run after approx. 30 secs.?
Check flue and ignition system
No
Check diagnostic code D.24
(see page 53) equal 1?
Check pitot tube (in fan outlet) and air
hoses are not obstructed and correctly
aligned.
Check or replace air pressure switch.
837/637 Check 4 pin connector for
fan speed control.
Does the fan run now?
Is 230 VAC present across fan
terminals?
Replace electronic board
Yes
No
No
Yes
No
Yes
YesCheck/replace fan
Does the boiler
commence ignition
Check status code
(see page 52) is S.33?
Check air/flue gas system
is correctly fitted and not
obstructed
Yes
No
Replace electronic board
No
Yes
Are electrodes sparking at
the burner?
YesGo to sheet E
No
Check electrodes and
electrode leads.
Replace as necessary.
Sheet D
Check flue restrictor
correspond to flue length
Page 45
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Fault Finding 10
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R145
Check gas valve and central heating system pressure
Does burner light 1st
attempt?
Does burner light within 3
ignition attempts?
No
Yes
Check gas supply
Does burner light?
Yes
Check burner pressure
settings are correct
Yes
NoReset boiler
No
Check/replace gas valve
as necessary
Does burner light?
No
Replace electronic board
Yes
Is burner indicator
illuminated?
No
Check flame
rectification lead and
electrode
Is burner indicator
illuminated
No
Yes
Does burner shut down after
approx. 15 secs.
NoGo to sheet F
Yes
Does status code (see page 52)
show S. 53?
Check water pressure in
central heating system, refill
and vent. as necessary
Check pump is running?
Yes
YesReplace pump
No
Is 230 VAC present at the
pump plug connection?
No
Replace electronic board
Sheet E
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10 Fault Finding
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R146
Does flame indicator glow and
flames increase in size to full gas
rate after approx. 2 mins?
Yes
Does burner flame modulate/ go
out when radiator temperature
control is turned left to the
horizontal position at flow
temperature of approx. 50 C?
Yes
Does heating flow pipe
temperature rise?
Go to sheet GYes
Check operation of burner and modulation
Ensure flow and return service
valves are open
No
No
No
Replace electronic board
No
Check operation of boiler in DHW
mode, does flame increase in size
to full rate? (TURBOmax Plus only)
Yes
Check partial load
setting
No
Check diagnostic code D.22
(see page 53) equals 1
(TURBOmax Plus only)
No
Go to sheet G
Yes
Check connections and
modulator, replace gas valve if
burner still fails to increase to full
rate
Turn main ON/OFF control to
the "0" position (TURBOmax
Plus only)
Yes
Insert a small screwdriver
through the hole in the front of
the diverter valve and hold
blade lightly against spindle
Turn "ON" the main ON/OFF
control
Does spindle move?
Yes
Replace electronic board
Replace diverter valve
No
Sheet F
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Fault Finding 10
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R147
Draw hot water at high rate
Does green warmstart
indicator flash?
Yes
Check hot water flow rate and temperature.
Compare with technical data, if flow is not
sufficient check incoming main and cold water
filter.
Normal operation carry out
electrical safety checks
No
Check cold water inlet pressure is
sufficient and that cold water inlet
filter is clear
Check cold water inlet is fully open
and adjustment is at maximum
flow rate
Does green warmstart
indicator flash now?
Check/Clear impeller in
Aquasensor, replace if necessary
Check/replace hall sensor
Replace electronic board
Does hot water indicator
glow/flash now?
Does green warmstart
indicator flash now?
No
No
Yes
Yes
No
Sheet G
No
Check D.H.W operation (turboMAX plus only)
Note!
turboMAX plus only
Page 48
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11 Diagrams
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R148
11.1 Functional Flow diagram: turboMAX plus 824/2 E, 828/2 E, 837 E
Thank you for choosing a Vaillant boiler. The information
given in this booklet will enable you to obtain the best
performance from your boiler.
turboMAX plus provides both central heating and
domestic hot water, with the domestic hot water
supplied directly from the boiler. The boiler will operate
automatically to provide domestic hot water whenever a
hot water tap is opened, and automatically adjusts to
meet the demand for both central heating and domestic
hot water in the most economical way.
thermoCOMPACT provides central heating and
domestic hot water where a separate indirect hot water
cylinder is also incorparated to the system. The
turboMAX/ thermoCOMPACT range of boilers have a
SEDBUK band 'D' rating.
If, after reading these instructions, you have any
questions on the operation of the boiler, please contact
either your installer or Vaillant Technical Department.
Key to symbols
Important Note
This symbol is used to indicate important
instructions.
• This symbol is used to indicate a required step.
Liability
We can accept no liability whatsoever for
damage or injury resulting from failure to observe these instructions.
Specified use
Vaillant turboMAX plus and thermoCOMPACT boilers are
made to fulfil the latest technical specifications and official safety regulations. These appliances are designed as
boilers for use in central heating and hot water supply
systems. thermoCOMPACT boilers only supply domestic
hot water where a separate indirect hot water cylinder is
also incorparated to the system. If the appliances are
used for purposes other than or in excess of these specifications, this shall be classed as incorrect operation,
and neither the manufacturer nor supplier will accept
any liability for resulting damage or injury.
Use of this type is entirely at the owner’s risk. The term
„specified use” also covers observance of the operating
and installation instructions, along with adherence to
the servicing schedules.
EC designation
The purpose of EC designation is to certify that the
boiler complies with the requirements of the directives
covering gasfired appliances (Council directive
90/396/EEC) and electromagnetic compatibility (Council
directive 89/336/EEC). These appliances also comply
with the requirements of the directive on operating
efficiency (Council directive 92/42/EEC).
Table of contents
1 General information
Page 55
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Instructions for use turboMAX plus, thermoCOMPACT3
Safety instructions 2
Factory guarantee 3
2 Safety instructions
Setup and adjustments
Installation and adjustment of the boiler as well as
service maintenance and repair of the boiler may only
be carried out by a competent person in accordance
with the Gas Safety (Installation and Use) Regulations
1998. (In the U.K. „CORGI“ Registered installers undertake the work to a safe and satisfactory standard). If the
boiler is installed in a compartment do not obstruct any
purpose provided ventilation openings, and do not use
the compartment for storage purposes.
Gas smell
If you smell gas or suspect a gas leak:
- Turn off the boiler
- Do not switch any electrical switches in the hazardous
area on or off
- Do not smoke in the hazardous area
- Turn off the gas supply at the gas meter
- Ventilate the room
- Consult your gas supplier, service agent or other competent person.
Modifications in and around the boiler
No modifications may be made to the following items:
- The boiler
- The gas, water and electrical supply
- The flue system
- The safety valve for the heating water
- Any structural changes around the appliance that
could affect the operational safety of the boiler.
Explosive and flammable materials
Do not use or store any explosive or highly flammable
materials (e.g. gasoline, paper or paint) near to
the appliance.
Inspection
The boiler should be serviced annually. We recommend
that you sign a service agreement with your service
agent or Vaillant Ltd.
3 Factory guarantee
Our confidence in the quality of craftmanship and performance of our products is demonstrated by the Vaillant
two year guarantee.
During the first year from installation the guarantee
covers your boiler against manufacturing defects for
both parts and labour. In order to extend this guarantee
to the second year from installation all you have to do is
ensure that your boiler receives a service when it is a
year old. (Please note that the cost of the service is not
included in the guarantee).
Important to qualify for your two year guarantee:
The boiler must be serviced either by Vaillant Ltd. or another competent servicing company (CORGI registered)
within one year of the installation date and the details
recorded in the "Installation, Commissioning and Service
Record Log Book" (this log book should have been completed and left with you by your installer). Please note
that the cost of the service is not included in the guarantee.
Registering with us
Registration is simple. Just complete the Guarantee
Registration Card and return to Vaillant within 30 days
of installation. Your details will then be automatically
registered within the Vaillant scheme.
Note: No receipt will be issued.
Immediate help
If your Vaillant boiler develops a fault your first action
should be to contact your installer, as his professional
assessment is needed under the terms of our Guarantee.
If you are unable to contact your installer, phone Vaillant
Service Solutions: 0870 6060 777.
Vaillant is a member of the Benchmark initiative and
fully supports the aims of the programme. Benchmark
has been introduced to improve the standards of installation and commissioning of central heating systems in
the UK and to encourage the regular servicing of all central heating systems to ensure safety and efficiency.
Page 56
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4
4 Operation
Instructions for use turboMAX plus, thermoCOMPACT
4 Operation
Overview
turboMAX plus
Fig. B.1a: Operating elements turboMAX plus
Operating controls
For access to the controls press the upper middle of the
lower front panel and drop it down. The following can
be seen:
1 Maximum radiator temperature control
2 The „+“ and „-“ buttons for the display panel
3 Main ON/OFF control
4 Built in control/timer module (if fitted)
5 The „i“ information button
6 Boiler display
7 Indicator lights to display the current operating mode
8 „Reset“ button
9 Maximum hot water temperature control and warm-
start ON/OFF control
10 Pressure gauge displaying the pressure in the heating
system
thermoCOMPACT
Fig. B.1b: Operating elements thermoCOMPACT
You can identify a thermoCOMPACT boiler by the sticker
which is situated at the top left hand side of the control
panel (see A, Fig. 1.b)
Operating controls
For access to the controls press the upper middle of the
lower front panel and drop it down. The following can
be seen:
1 Maximum radiator temperature control
2 The „+“ and „-“ buttons for the display panel
3 Main ON/OFF control
4 Built in control/timer module (if fitted)
5 The „i“ information button
6 Boiler display
7 Indicator lights to display the current operating mode
8 „Reset“ button
9 Pressure gauge displaying the pressure in the heating
system
Indicator lights/boiler display
turboMAX plus and thermoCOMPACT boilers have an
advanced multifunction boiler display (1). When the main
ON/OFF control is in the „ON“ position the display will
normally show the temperature of water in the boiler
circuit (45 °C in the example), which confirms that the
boiler is functioning correctly.
Fig. B.2: LED displays
1 In the unlikely event of a fault developing which
prevents the boiler from operating, the display may
show a fault code.
2 Red indicator
Illuminated = Boiler has locked out
3 Yellow indicator
Illuminated = Main burner ignited
6
9
7584
o
C
o
C
1
VRC-VC
I
0
32
10
1
2
3
o
C
4
6
A
THERMOcompact
7584
o
C
VRC-VC
I
0
32
1
9
o
C
VRC-VC
I
0
Page 57
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5
Operation 4
Instructions for use turboMAX plus, thermoCOMPACT
4 turboMAX plus
Green warmstart indicator (3) Illuminated = Warmstart
switched ON
Not illuminated = Warmstart is switched OFF and there
is no demand for hot water
Flashing = There is either a demand for hot water or
warmstart
5 thermoCOMPACT
Green indicator (3) is illuminated but has no function
Initial checks before turning ON
Open the service valves
• Ensure the cold water service valve is open. This can
be checked by opening a hot water tap and ensuring
water flows.
• Ensure that the service valves in the heating flow and
return (2 and 1) and the gas service valve (3) are open.
The flow, return and gas service valves are open
when the line marking has the same direction as
the pipe.
• The pressure relief valve (4) is provided for safety reasons and must not be interfered with.
Note:
A bottom cover is fitted to the appliance. The
service valves can be seen through the cover.
Fig. B.3: Opening service valves
picture shows a turboMAX plus boiler. Check the
water contents
• Check the water contents of the system on the pressure gauge (1).
The needle on the pressure gauge should be within
the green band (between 1 and 1.5 bar). If the needle
displays a value below 0.8 bar when the appliance is
cold, follow the instructions left by your installer to
refill the system. Alternatively, your installer should be
called to refill the system.
Fig. B.4: Checking the water level
Domestic hot water operation
(turboMAX plus only)
The boiler should only be used when the heating
system contains water. Use of the boiler without
water may cause damage to the boiler or its
components.
Setting the maximum domestic hot water temperature
control
• Turn the main switch (2) to the „l“ position.
• The display will show the boiler flow temperature which
indicates electrical power to the boiler.
• The domestic hot water temperature can be adjusted
using the hot water temperature control (3).
• Turn the control clockwise to increase the temperature
and anti-clockwise to decrease thetemperature.
As a guide for normal circumstances set the knob to the
one o´clock position.
Note:
This control adjusts the maximum domestic hot
water temperature. If adjusting the control
upwards appears to have no effect on the temperature, then the boiler is already operating at
full output for the selected flow rate.
1
o
C
o
C
VRC-VC
I
0
2314
I
0
Page 58
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6
4 Operation
Instructions for use turboMAX plus, thermoCOMPACT
If you live in a hard water area please do not set
the control knob above the mid (12 o´clock) position to prevent excessiv scale formation (fig. B.5).
Fig. B.5: Domestic hot water supply
Warmstart operation (turboMAX plus only)
The warmstart facility provides instantaneous delivery of
domestic hot water from the turboMAX plus boiler. When
the warmstart system is switched ON the boiler will
automatically light periodically to maintain the internal
temperature of the boiler at approximately 40 °C. When
the warmstart system is switched OFF a short delay may
be experienced in obtaining hot water at the tap.
Fig. B.6: Switching the warm start on and off
• The warmstart system is activated by turning the hot
water temperature control knob (1) all the way to the
very right for a short time. The green indicator light
will now illuminate. Reset the hot water temperature
control knob to the desired setting. The boiler will now
provide instantaneous delivery of hot water directly
when a hot water tap is turned on.
• The warmstart system is switched off by turning the
hot water temperature control knob (1) all the way to
the very left for a short time. The green indicator light
is not illuminated. Reset the hot water temperature
control knob to the desired setting.
Note:
Irrespective of whether the warmstart facility is
switched on or off, the boiler will automatically
operate to provide hot water whenever a hot
water tap is opened.
Fig. B.7: Drawing off hot water
Obtaining hot water (turboMAX plus only)
On opening a hot water tap (1) at a supply point (basin,
shower, bath, etc.) the turboMAX pLus boiler will automatically operate to deliver hot water.
On closing the tap the boiler switches OFF (or continues
to operate for central heating if required). The pump and
fan will continue to operate for a short period.
o
3
o
C
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7
Operation 4
Instructions for use turboMAX plus, thermoCOMPACT
Heating operation
Setting the maximum radiator temperature control
• Turn the main switch (1) to the „l“ position.
• Set the maximum radiator temperature control to the
desired setting using the control knob (2). We recommend the following settings:
- Left setting during spring and autumn,
- Middle setting during mild winter,
- Right setting during cold winter.
Fig. B.8: Setting the flow temperature
Setting the external controls
• Set the room thermostat (3) and/or the thermostatic
radiator valves (4) according to the instructions
supplied with the control(s).
Hint!
Vaillant offer room thermostat/time control
accessories which give accurate and economic
room temperature control as well as improved
comfort. Ask your installer!
Fig. B.9: Setting the external controller
The boiler will now operate automatically to provide central
heating for the conditions selected on the external controls (turboMAX plus will also provide domestic hot
water on demand). Whilst the boiler is operating, the
boiler display (fig. B.2) indicates the temperature of the
water within the boiler circuit. After the boiler stops
operating the pump and fan will continue to operate for
a short period to fully disperse the heat from the boiler.
The boiler incorporates an anti-cycling economiser control to prevent energy wasteful ON and
OFF operation of the boiler for short periods
when in the central heating mode. When turning
the room thermostat to a higher setting there
may therefore be a short delay before the boiler
operates.
Resetting the appliance
Fig. B.10: Reset
Fig. B.11: Reset
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3
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Page 60
Supplied By www.heating spares.co Tel. 0161 620 6677
8
4 Operation
Instructions for use turboMAX plus, thermoCOMPACT
When a hot water tap (turboMAX plus only) or the central
heating system requires heat, the boiler automatically
ignites and starts to operate. If the automatic ignition is
not successful within 10 seconds, then the boiler does
not go into operation and switches to „Lock out“.
This is indicated visually by the red indicator light (1) and
the displaying of fault code „F.28“ or „F.29“ (flame extinguished during operation). A new attempt to ignite the
flame can then only be performed after pressing the
„Reset“ button.
• Press the „Reset“ button (2) and hold for approx. 1
second.
If the boiler still shuts off after a third attempt,
then please consult your installer or Vaillant
Service Solutions.
The boiler also switches to „Fault“ when there is not
enough water in the system. This fault is indicated by
fault code „F 22“. The boiler can only be placed back in
operation after the heating system has been properly
refilled with water.
In the unlikely event of any other fault developing, which
prevents the boiler from operating, the display will also
show other fault codes. If a fault code is displayed please
contact your installer or Vaillant Service Solutions.
Note:
If contacting Vaillant Service Solutions please
remember to quote the fault code, as this will
help to pinpoint the fault.
Turning the boiler OFF
(turboMAX plus only)
To turn OFF the central heating only (Summer mode)
Fig. B.12: Setting the summer operating mode
• Turn the maximum radiator temperature control knob
used to control the heating supply temperature (1) all
the way to the left.
Hint!
You can switch off the heating operation in summer, for example, but the boiler will
continue to provide domestic hot water
whenever a hot water tap is opened.
To turn OFF central heating and hot water for short
periods of time
Fig. B.13: Shutting down the unit completely
• Turn the main ON/OFF control (2) to the „0“ position.
If you want to turn the turboMAX plus boiler
OFF for a longer period of time (e.g. holidays),
and there is no danger of frost, then you should
also turn off the gas supply, the cold water service valve and the electrical supply. Please note
the frost protection hints in this regard .
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Page 61
Supplied By www.heating spares.co Tel. 0161 620 6677
9
Operation 4
Instructions for use turboMAX plus, thermoCOMPACT
Turning the boiler OFF
(thermoCOMPACT only)
To turn OFF the central heating
• Turn the maximum radiator temperature control knob
used to control the heating supply temperature (1) all
the way to the left.
Fig. B.14: Setting the summer operating mode
To turn boiler OFF for short periods of time
• Turn the main ON/OFF control (2) to the „0“ position.
Fig. B.15: Shutting down the unit completely
Do not turn the thermoCOMPACT boiler OFF if a
hot water cylinder is also incorporated in the
system unless there is no demand for domestic
hot water.
Care and maintenance
Clean the outer casing of your boiler with a damp cloth
and a little soap. Do not use abrasive or solvent cleaning
agents that may damage the case or the plastic fittings.
The appliance should be serviced at least once per year.
To ensure regular servicing, it is strongly recommended
that arrangements are made with your service agent or
Vaillant Ltd. For further details please contact Vaillant
Service Solutions: 0870 6060777.
Frost protection
Your boiler is equipped with a frost protection function:
If the heating water temperature drops below 5 °C when
the main switch is ON, then the boiler goes into operation and heats the boiler circuit to approx. 30 °C.
It cannot be guaranteed that water will circulate
throughout the entire heating system.
If the boiler is not operated for several hours during
very cold weather there is therefore the possibility of
the system freezing. Please ensure that if you are absent
during a period of frost the central heating remains in
operation and all rooms are kept above freezing point.
It must be remembered, however, that the boiler will be
automatically switched off by the built in monitoring
devices if certain faults occur, e.g. interruption in the gas
or electricity supply or faults in the flue gas system. To
overcome this possibility you can drain both the central
heating system and boiler.
Frost protection and monitoring devices can
only function when the main switch of the unit
is set to the „I“ position and the boiler is
connected to the electrical supply.
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Page 62
Supplied By www.heating spares.co Tel. 0161 620 6677
10
4 Operation
Instructions for use turboMAX plus, thermoCOMPACT
Troubleshooting
In the unlikely event that a problem occurs with the operation of the turboMAX plus or thermoCOMPACT boiler,
the following points should be checked:
1. Boiler fails to operate:
• Is the gas supply turned on? (see page 5)
• Is the water supply turned on? (see page 5)
• Is there enough water in the heating system? (see
page 5)
• Is the electrical supply switched on?
• Is the main ON/OFF control in the „On” position?
(switch position „I“) (see page 5)
• Is the burner lock out indicator light illuminated? (see
page 6)
2. Hot water operates but no central heating
(turboMAX plus only)
• Is the heating turned on? (see page 7/8).
• Are all external heating controls ON? (see page 8)
If your boiler still does not operate then please consult
your installer or Vaillant Service Solutions
0870 6060 777.
Status display
(For maintenance and service work performed by your
installer or service agent)
The status displays are activated by pressing the
„i“ button (1). The current status code, e.g. „S.34“ for the
frost protection mode, is shown on the display (2).
Pressing the „i“ button again will switch you back to the
normal mode. The „+“ and „-“ buttons will only be used
by your installer or service agent during service and
maintenance work.
DisplayMeaning
S.00*No heating required
S.01*Fan running
S.03*Ignition sequence
S.04*Burner ignited
S.05*Fan and water pump over run
S.07*Water pump over run
S.08*Anti cycling mode (after heating operation)
S.10**Hot water demand
S.14**Burner ignited
S.34*Frost protection mode
Table B.1: Status display (A complete overview of the status
codes can be found in the installation instructions).
*Heating operation
** Hot water operation (turboMAX plus only)
Fig. B.16: Status display
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Page 63
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Page 64
Supplied By www.heating spares.co Tel. 0161 620 6677
83 36 90 _22 GB_R1 03/2003 Mü Subject to alteration
Head Office: Vaillant Ltd.
Service Solutions 0870-6060 777
Vaillant House
Trident CloseMedway City Estate
Rochester
Kent ME2 4EZ
Technical Advice 01634-29 23 92
Page 65
Supplied By www.heating spares.co Tel. 0161 620 6677
TURBOmax Pro 24-28 E
VUW 242,242/2 -3 H
VUW 282,282/2 -3 H
TURBOmax Plus 824-828 E
VUW 242,242/2 -5 H/B
VUW 282,282/2 -5 H/B
THERMOcompact 615-628 E
VU 152,152/2 -5 H
VU 202,202/2 -5 H/B
VU 242,242/2 -5 H
VAILLANT
SPARE PART CATALOGUE
VU 282,282/2 -5 H/B
This catalogue covers original
TURBOmax Pro and Plus and
THERMOcompact models.
Also the later /2 versions are covered
(e.g. VUW 242 -3 and VUW 242/2 -3).
Refer to the appliance data badge
for identification.
802762.04 GB 05/01
Page 66
Supplied By www.heating spares.co Tel. 0161 620 6677
View of appliances / Content
3
5
General view of sheets
TURBOmax Pro/Plus
THERMOcompact
Main component 04
burner
Main component 05
gas section
Main component 06
heat exchanger
Main component 07a
casing parts
Main component 07b
air pressure chamber, fan
Main component 08a
hydraulic parts
TURBOmax Pro/Plus
THERMOcompact
1
7
9
11
15
TURBOmax Pro 24 E (VUW 242,242/2 -3 H)
TURBOmax Pro 28 E (VUW 282,282/2 -3 H)
TURBOmax Plus 824 E (VUW 242,242/2 -5 H/B)
TURBOmax Plus 828 E (VUW 282,282/2 -5 H/B)
THERMOcompact 615 E (VU 152,152/2 -5 H)
THERMOcompact 620 E (VU 202,202/2 -5 H/B)
THERMOcompact 624 E (VU 242,242/2 -5 H)
THERMOcompact 628 E (VU 282,282/2 -5 H/B)
Main component 08b
connecting accessories
Main component 12
switch box
17
19
Subject to alteration !Content 802762.04 GB 05/01
In order to maintain the safe and
efficientoperationofthis
appliance, only genuine Vaillant
spare parts must be used.
Page 67
Supplied By www.heating spares.co Tel. 0161 620 6677
090929conn. cable, cpl. gas section Honeywellxxxxxxxxxxxx
03256097cable tree, cpl.xxxxxx
256116cable tree, cpl.xxxxxx
04123420gas tube, cpl. supply for all types5,6,7xxxxxx
123467gas tube, cpl. supply for all VU types5,6,7xxxxxx
05982319packing ring 21,0x2,5 rubberxxxxxxxxxxxx
06981140washer 17,0x24,0x2,0, set of 10xxxxxxxxxxxx
07219622clip, set of 10 xxxxxxxxxxxx
08123423gas tube, cpl. Turbo9,10xxxxxxxxxxxx
09981142washer 13,0x18,3x1,5, set of 10xxxxxxxxxxxx
10049638throttle jet 2x3,50x
049639throttle jet 2x4,00xx
049722throttle jet 1x4,00x
11147759adapter piece (gas section)5,9,10,12xxxxxxxxxxxx
12105901oval head screw, Torx M4x10, set of 10xxxxxxxxxxxx
13980765packing ring, red, largexxxxxxxxxxxx
with parts
Pro 24 E H
Pro 28 E H
Plus 824 E H
Plus 824 E B
Plus 828 E H
THERMOcompac
Plus 828 E B
615 E H
620 E H
620 E B
624 E H
628 E H
628 E B
201990conversion set H to B (SIT+Honeywell)not shownx x
201991conversion set H to B (SIT+Honeywell)not shownx x xxx x
222369conversion set B to H (SIT+Honeywell)not shownxxxx
Subject to alteration ! 802762.04 GB 05/01
4
Page 72
Supplied By www.heating spares.co Tel. 0161 620 6677
065087heat exchanger, cpl. 28kW Euro Plus3.4x xx x
02252805ntc-resistor, cpl. xxxxxxxxxxxx
03981151packing ring 19,0x3,15, set of 10xxxxxxxxxxxx
04219621clip primary heat ex., Set of 6 xxxxxxxxxxxx
05235715sheet-metal screw ST4,8x9,5xxxxxxxxxxxx
06
065107secondary heat exchanger, cpl. 12 7,8,9xxxxxx
07981163packing ring 15,0x2,0, set of 10xxxxxx
08981142washer 13,0x18,3x1,5, set of 10xxxxxx
09219622clip, set of 10 xxxxxx
with parts
Pro 24 E H
Pro 28 E H
Plus 824 E H
Plus 824 E B
Plus 828 E H
THERMOcompac
Plus 828 E B
615 E H
620 E H
620 E B
624 E H
628 E H
628 E B
Subject to alteration ! 802762.04 GB 05/01
6
Page 74
Supplied By www.heating spares.co Tel. 0161 620 6677
02-07-056
01067314cowling, cpl. 4.5xxxxxxxxxxxx
02079533cover platexxxxxxxxxx
03209714control box coverxxxxxxxxxx
04219620clip, set of 10xxxxxxxxxxxx
05219619clip, set of 10xxxxxxxxxxxx
with parts
Pro 24 E H
Pro 28 E H
Plus 824 E H
Plus 824 E B
Plus 828 E H
THERMOcompac
Plus 828 E B
615 E H
620 E H
620 E B
624 E H
628 E H
628 E B
Subject to alteration ! 802762.04 GB 05/01
8
Page 76
Supplied By www.heating spares.co Tel. 0161 620 6677
02-07-040
01076507flue collector cap, cpl. 12-20kW4x x x
077793flue collector cap, cpl. 24kW4xx xx
077794flue collector cap, cpl. 28kW4xx xx x
02190215fan, cpl. Fime (incl. sheet metal)3xxxxxxxxxxxx
03235715sheet-metal screw ST4,8x9,5xxxxxxxxxxxx
04210981packingxxxxxxxxxxxx
05050577fan proving switch cpl. Huba6xxxxxxxxxxxx
06084139flexible tube, cpl.xxxxxxxxxxxx
07256097cable tree cpl.xxxxxx
256116cable tree cpl.xxxxxx
08981048packing ring set for cover xxxxxxxxxxxx
09139472plug, set of 2xxxxxxxxxxxx
10161255inspection glas, cpl.xxxxxxxxxxxx
11980766packing ring, red, smallxxxxxxxxxxxx
12980765packing ring, red, largexxxxxxxxxxxx
13133627nipple, cpl. xxxxxxxxxxxx
14083394sleeve, cpl. with reducing ring (15kW)x
083393sleeve, cpl. with reducing ring (20kW)x x
083384sleeve, cpl.xxxxxxxxx
15194166reducing ring (F1+F2)xxxxxxxxx
16078910cover underpressure chamber8,9,10xxxxxxxxxxxx
with parts
Pro 24 E H
Pro 28 E H
Plus 824 E H
Plus 824 E B
Plus 828 E H
THERMOcompac
Plus 828 E B
615 E H
620 E H
620 E B
624 E H
628 E H
628 E B
Subject to alteration ! 802762.04 GB 05/01
10
Page 78
Supplied By www.heating spares.co Tel. 0161 620 6677
02-08-066
30208495orifice 19.1x4.5x135,39,42x x
31074514water filter, cpl.xxxxxx
31a012975water quantity limiter, cpl. 24kWxx x
012976water quantity limiter, cpl. 28kWxx x
32118937oval head screw M5x12xxxxxx
33154150bowxxxxxx
34219621clip primary heat ex., set of 6 xxxxxx
35219622clip, set of 10 xxxxxx
36219623clip, set of 10xxxxxx
37981142washer 13,0x18,3x1,5, set of 10xxxxxx
38981146washer 5,5x11,0x1,5, set of 10xxxxxx
39981140washer 17,0x24,0x2,0, set of 10xxxxxx
40981149washer 10,0x14,9x1,5, set of 10xxxxxx
41981165packing ring 12,0x2,0, set of 10xxxxxx
42981163packing ring 15,0x2,0, set of 10xxxxxx
43980305packing ring 9,0x2,0xxxxxx
44981151packing ring 19,0x3,15, set of 10xxxxxx
45981155packing ring 4,0x1,4, set of 10xxxxxx
46980765packing ring, red, largexxxxxx
Plus 828 E B
Subject to alteration ! 802762.04 GB 05/01
14
Page 82
Supplied By www.heating spares.co Tel. 0161 620 6677
26101271manometer27,45xxxxxx
27085751supportxxxxxx
28019372connection tube, cpl. 36,40,41xxxxxx
29181057expansion vessel cpl. 10 ltr.xxxxxx
32118937oval head screw M5x12xxxxxx
33154150bowxxxxxx
34219621clip primary heat ex., set of 6 xxxxxx
35219622clip, set of 10 xxxxxx
36219623clip, set of 10xxxxxx
38981146washer 5,5x11,0x1,5, set of 10xxxxxx
39981140washer 17,0x24,0x2,0, set of 10xxxxxx
40981149washer 10,0x14,9x1,5, set of 10xxxxxx
41981165packing ring 12,0x2,0, set of 10xxxxxx
42981163packing ring 15,0x2,0, set of 10xxxxxx
43980305packing ring 9,0x2,0xxxxxx
44981151packing ring 19,0x3,15, set of 10xxxxxx
45981155packing ring 4,0x1,4, set of 10xxxxxx
46980765packing ring, red, largexxxxxx
with parts
3,27,30,32,35,36,
41,42,44,45
615 E H
620 E H
620 E B
624 E H
628 E H
xxxxxx
628 E B
Subject to alteration ! 802762.04 GB 05/01
16
Page 84
Supplied By www.heating spares.co Tel. 0161 620 6677
Thank you for choosing a Vaillant boiler. The information
given in this booklet will enable you to obtain the best
performance from your boiler.
turboMAX plus provides both central heating and
domestic hot water, with the domestic hot water
supplied directly from the boiler. The boiler will operate
automatically to provide domestic hot water whenever a
hot water tap is opened, and automatically adjusts to
meet the demand for both central heating and domestic
hot water in the most economical way.
thermoCOMPACT provides central heating and
domestic hot water where a separate indirect hot water
cylinder is also incorparated to the system. The
turboMAX/ thermoCOMPACT range of boilers have a
SEDBUK band 'D' rating.
If, after reading these instructions, you have any
questions on the operation of the boiler, please contact
either your installer or Vaillant Technical Department.
Key to symbols
Important Note
This symbol is used to indicate important
instructions.
• This symbol is used to indicate a required step.
Liability
We can accept no liability whatsoever for
damage or injury resulting from failure to observe these instructions.
Specified use
Vaillant turboMAX plus and thermoCOMPACT boilers are
made to fulfil the latest technical specifications and official safety regulations. These appliances are designed as
boilers for use in central heating and hot water supply
systems. thermoCOMPACT boilers only supply domestic
hot water where a separate indirect hot water cylinder is
also incorparated to the system. If the appliances are
used for purposes other than or in excess of these specifications, this shall be classed as incorrect operation,
and neither the manufacturer nor supplier will accept
any liability for resulting damage or injury.
Use of this type is entirely at the owner’s risk. The term
„specified use” also covers observance of the operating
and installation instructions, along with adherence to
the servicing schedules.
EC designation
The purpose of EC designation is to certify that the
boiler complies with the requirements of the directives
covering gasfired appliances (Council directive
90/396/EEC) and electromagnetic compatibility (Council
directive 89/336/EEC). These appliances also comply
with the requirements of the directive on operating
efficiency (Council directive 92/42/EEC).
Table of contents
1 General information
Page 89
Supplied By www.heating spares.co Tel. 0161 620 6677
Instructions for use turboMAX plus, thermoCOMPACT3
Safety instructions 2
Factory guarantee 3
2 Safety instructions
Setup and adjustments
Installation and adjustment of the boiler as well as
service maintenance and repair of the boiler may only
be carried out by a competent person in accordance
with the Gas Safety (Installation and Use) Regulations
1998. (In the U.K. „CORGI“ Registered installers undertake the work to a safe and satisfactory standard). If the
boiler is installed in a compartment do not obstruct any
purpose provided ventilation openings, and do not use
the compartment for storage purposes.
Gas smell
If you smell gas or suspect a gas leak:
- Turn off the boiler
- Do not switch any electrical switches in the hazardous
area on or off
- Do not smoke in the hazardous area
- Turn off the gas supply at the gas meter
- Ventilate the room
- Consult your gas supplier, service agent or other competent person.
Modifications in and around the boiler
No modifications may be made to the following items:
- The boiler
- The gas, water and electrical supply
- The flue system
- The safety valve for the heating water
- Any structural changes around the appliance that
could affect the operational safety of the boiler.
Explosive and flammable materials
Do not use or store any explosive or highly flammable
materials (e.g. gasoline, paper or paint) near to
the appliance.
Inspection
The boiler should be serviced annually. We recommend
that you sign a service agreement with your service
agent or Vaillant Ltd.
3 Factory guarantee
Our confidence in the quality of craftmanship and performance of our products is demonstrated by the Vaillant
two year guarantee.
During the first year from installation the guarantee
covers your boiler against manufacturing defects for
both parts and labour. In order to extend this guarantee
to the second year from installation all you have to do is
ensure that your boiler receives a service when it is a
year old. (Please note that the cost of the service is not
included in the guarantee).
Important to qualify for your two year guarantee:
The boiler must be serviced either by Vaillant Ltd. or another competent servicing company (CORGI registered)
within one year of the installation date and the details
recorded in the "Installation, Commissioning and Service
Record Log Book" (this log book should have been completed and left with you by your installer). Please note
that the cost of the service is not included in the guarantee.
Registering with us
Registration is simple. Just complete the Guarantee
Registration Card and return to Vaillant within 30 days
of installation. Your details will then be automatically
registered within the Vaillant scheme.
Note: No receipt will be issued.
Immediate help
If your Vaillant boiler develops a fault your first action
should be to contact your installer, as his professional
assessment is needed under the terms of our Guarantee.
If you are unable to contact your installer, phone Vaillant
Service Solutions: 0870 6060 777.
Vaillant is a member of the Benchmark initiative and
fully supports the aims of the programme. Benchmark
has been introduced to improve the standards of installation and commissioning of central heating systems in
the UK and to encourage the regular servicing of all central heating systems to ensure safety and efficiency.
Page 90
Supplied By www.heating spares.co Tel. 0161 620 6677
4
4 Operation
Instructions for use turboMAX plus, thermoCOMPACT
4 Operation
Overview
turboMAX plus
Fig. B.1a: Operating elements turboMAX plus
Operating controls
For access to the controls press the upper middle of the
lower front panel and drop it down. The following can
be seen:
1 Maximum radiator temperature control
2 The „+“ and „-“ buttons for the display panel
3 Main ON/OFF control
4 Built in control/timer module (if fitted)
5 The „i“ information button
6 Boiler display
7 Indicator lights to display the current operating mode
8 „Reset“ button
9 Maximum hot water temperature control and warm-
start ON/OFF control
10 Pressure gauge displaying the pressure in the heating
system
thermoCOMPACT
Fig. B.1b: Operating elements thermoCOMPACT
You can identify a thermoCOMPACT boiler by the sticker
which is situated at the top left hand side of the control
panel (see A, Fig. 1.b)
Operating controls
For access to the controls press the upper middle of the
lower front panel and drop it down. The following can
be seen:
1 Maximum radiator temperature control
2 The „+“ and „-“ buttons for the display panel
3 Main ON/OFF control
4 Built in control/timer module (if fitted)
5 The „i“ information button
6 Boiler display
7 Indicator lights to display the current operating mode
8 „Reset“ button
9 Pressure gauge displaying the pressure in the heating
system
Indicator lights/boiler display
turboMAX plus and thermoCOMPACT boilers have an
advanced multifunction boiler display (1). When the main
ON/OFF control is in the „ON“ position the display will
normally show the temperature of water in the boiler
circuit (45 °C in the example), which confirms that the
boiler is functioning correctly.
Fig. B.2: LED displays
1 In the unlikely event of a fault developing which
prevents the boiler from operating, the display may
show a fault code.
2 Red indicator
Illuminated = Boiler has locked out
3 Yellow indicator
Illuminated = Main burner ignited
6
9
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10
1
2
3
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A
THERMOcompact
7584
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9
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Page 91
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5
Operation 4
Instructions for use turboMAX plus, thermoCOMPACT
4 turboMAX plus
Green warmstart indicator (3) Illuminated = Warmstart
switched ON
Not illuminated = Warmstart is switched OFF and there
is no demand for hot water
Flashing = There is either a demand for hot water or
warmstart
5 thermoCOMPACT
Green indicator (3) is illuminated but has no function
Initial checks before turning ON
Open the service valves
• Ensure the cold water service valve is open. This can
be checked by opening a hot water tap and ensuring
water flows.
• Ensure that the service valves in the heating flow and
return (2 and 1) and the gas service valve (3) are open.
The flow, return and gas service valves are open
when the line marking has the same direction as
the pipe.
• The pressure relief valve (4) is provided for safety reasons and must not be interfered with.
Note:
A bottom cover is fitted to the appliance. The
service valves can be seen through the cover.
Fig. B.3: Opening service valves
picture shows a turboMAX plus boiler. Check the
water contents
• Check the water contents of the system on the pressure gauge (1).
The needle on the pressure gauge should be within
the green band (between 1 and 1.5 bar). If the needle
displays a value below 0.8 bar when the appliance is
cold, follow the instructions left by your installer to
refill the system. Alternatively, your installer should be
called to refill the system.
Fig. B.4: Checking the water level
Domestic hot water operation
(turboMAX plus only)
The boiler should only be used when the heating
system contains water. Use of the boiler without
water may cause damage to the boiler or its
components.
Setting the maximum domestic hot water temperature
control
• Turn the main switch (2) to the „l“ position.
• The display will show the boiler flow temperature which
indicates electrical power to the boiler.
• The domestic hot water temperature can be adjusted
using the hot water temperature control (3).
• Turn the control clockwise to increase the temperature
and anti-clockwise to decrease thetemperature.
As a guide for normal circumstances set the knob to the
one o´clock position.
Note:
This control adjusts the maximum domestic hot
water temperature. If adjusting the control
upwards appears to have no effect on the temperature, then the boiler is already operating at
full output for the selected flow rate.
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4 Operation
Instructions for use turboMAX plus, thermoCOMPACT
If you live in a hard water area please do not set
the control knob above the mid (12 o´clock) position to prevent excessiv scale formation (fig. B.5).
Fig. B.5: Domestic hot water supply
Warmstart operation (turboMAX plus only)
The warmstart facility provides instantaneous delivery of
domestic hot water from the turboMAX plus boiler. When
the warmstart system is switched ON the boiler will
automatically light periodically to maintain the internal
temperature of the boiler at approximately 40 °C. When
the warmstart system is switched OFF a short delay may
be experienced in obtaining hot water at the tap.
Fig. B.6: Switching the warm start on and off
• The warmstart system is activated by turning the hot
water temperature control knob (1) all the way to the
very right for a short time. The green indicator light
will now illuminate. Reset the hot water temperature
control knob to the desired setting. The boiler will now
provide instantaneous delivery of hot water directly
when a hot water tap is turned on.
• The warmstart system is switched off by turning the
hot water temperature control knob (1) all the way to
the very left for a short time. The green indicator light
is not illuminated. Reset the hot water temperature
control knob to the desired setting.
Note:
Irrespective of whether the warmstart facility is
switched on or off, the boiler will automatically
operate to provide hot water whenever a hot
water tap is opened.
Fig. B.7: Drawing off hot water
Obtaining hot water (turboMAX plus only)
On opening a hot water tap (1) at a supply point (basin,
shower, bath, etc.) the turboMAX pLus boiler will automatically operate to deliver hot water.
On closing the tap the boiler switches OFF (or continues
to operate for central heating if required). The pump and
fan will continue to operate for a short period.
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Operation 4
Instructions for use turboMAX plus, thermoCOMPACT
Heating operation
Setting the maximum radiator temperature control
• Turn the main switch (1) to the „l“ position.
• Set the maximum radiator temperature control to the
desired setting using the control knob (2). We recommend the following settings:
- Left setting during spring and autumn,
- Middle setting during mild winter,
- Right setting during cold winter.
Fig. B.8: Setting the flow temperature
Setting the external controls
• Set the room thermostat (3) and/or the thermostatic
radiator valves (4) according to the instructions
supplied with the control(s).
Hint!
Vaillant offer room thermostat/time control
accessories which give accurate and economic
room temperature control as well as improved
comfort. Ask your installer!
Fig. B.9: Setting the external controller
The boiler will now operate automatically to provide central
heating for the conditions selected on the external controls (turboMAX plus will also provide domestic hot
water on demand). Whilst the boiler is operating, the
boiler display (fig. B.2) indicates the temperature of the
water within the boiler circuit. After the boiler stops
operating the pump and fan will continue to operate for
a short period to fully disperse the heat from the boiler.
The boiler incorporates an anti-cycling economiser control to prevent energy wasteful ON and
OFF operation of the boiler for short periods
when in the central heating mode. When turning
the room thermostat to a higher setting there
may therefore be a short delay before the boiler
operates.
Resetting the appliance
Fig. B.10: Reset
Fig. B.11: Reset
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4 Operation
Instructions for use turboMAX plus, thermoCOMPACT
When a hot water tap (turboMAX plus only) or the central
heating system requires heat, the boiler automatically
ignites and starts to operate. If the automatic ignition is
not successful within 10 seconds, then the boiler does
not go into operation and switches to „Lock out“.
This is indicated visually by the red indicator light (1) and
the displaying of fault code „F.28“ or „F.29“ (flame extinguished during operation). A new attempt to ignite the
flame can then only be performed after pressing the
„Reset“ button.
• Press the „Reset“ button (2) and hold for approx. 1
second.
If the boiler still shuts off after a third attempt,
then please consult your installer or Vaillant
Service Solutions.
The boiler also switches to „Fault“ when there is not
enough water in the system. This fault is indicated by
fault code „F 22“. The boiler can only be placed back in
operation after the heating system has been properly
refilled with water.
In the unlikely event of any other fault developing, which
prevents the boiler from operating, the display will also
show other fault codes. If a fault code is displayed please
contact your installer or Vaillant Service Solutions.
Note:
If contacting Vaillant Service Solutions please
remember to quote the fault code, as this will
help to pinpoint the fault.
Turning the boiler OFF
(turboMAX plus only)
To turn OFF the central heating only (Summer mode)
Fig. B.12: Setting the summer operating mode
• Turn the maximum radiator temperature control knob
used to control the heating supply temperature (1) all
the way to the left.
Hint!
You can switch off the heating operation in summer, for example, but the boiler will
continue to provide domestic hot water
whenever a hot water tap is opened.
To turn OFF central heating and hot water for short
periods of time
Fig. B.13: Shutting down the unit completely
• Turn the main ON/OFF control (2) to the „0“ position.
If you want to turn the turboMAX plus boiler
OFF for a longer period of time (e.g. holidays),
and there is no danger of frost, then you should
also turn off the gas supply, the cold water service valve and the electrical supply. Please note
the frost protection hints in this regard .
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Operation 4
Instructions for use turboMAX plus, thermoCOMPACT
Turning the boiler OFF
(thermoCOMPACT only)
To turn OFF the central heating
• Turn the maximum radiator temperature control knob
used to control the heating supply temperature (1) all
the way to the left.
Fig. B.14: Setting the summer operating mode
To turn boiler OFF for short periods of time
• Turn the main ON/OFF control (2) to the „0“ position.
Fig. B.15: Shutting down the unit completely
Do not turn the thermoCOMPACT boiler OFF if a
hot water cylinder is also incorporated in the
system unless there is no demand for domestic
hot water.
Care and maintenance
Clean the outer casing of your boiler with a damp cloth
and a little soap. Do not use abrasive or solvent cleaning
agents that may damage the case or the plastic fittings.
The appliance should be serviced at least once per year.
To ensure regular servicing, it is strongly recommended
that arrangements are made with your service agent or
Vaillant Ltd. For further details please contact Vaillant
Service Solutions: 0870 6060777.
Frost protection
Your boiler is equipped with a frost protection function:
If the heating water temperature drops below 5 °C when
the main switch is ON, then the boiler goes into operation and heats the boiler circuit to approx. 30 °C.
It cannot be guaranteed that water will circulate
throughout the entire heating system.
If the boiler is not operated for several hours during
very cold weather there is therefore the possibility of
the system freezing. Please ensure that if you are absent
during a period of frost the central heating remains in
operation and all rooms are kept above freezing point.
It must be remembered, however, that the boiler will be
automatically switched off by the built in monitoring
devices if certain faults occur, e.g. interruption in the gas
or electricity supply or faults in the flue gas system. To
overcome this possibility you can drain both the central
heating system and boiler.
Frost protection and monitoring devices can
only function when the main switch of the unit
is set to the „I“ position and the boiler is
connected to the electrical supply.
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4 Operation
Instructions for use turboMAX plus, thermoCOMPACT
Troubleshooting
In the unlikely event that a problem occurs with the operation of the turboMAX plus or thermoCOMPACT boiler,
the following points should be checked:
1. Boiler fails to operate:
• Is the gas supply turned on? (see page 5)
• Is the water supply turned on? (see page 5)
• Is there enough water in the heating system? (see
page 5)
• Is the electrical supply switched on?
• Is the main ON/OFF control in the „On” position?
(switch position „I“) (see page 5)
• Is the burner lock out indicator light illuminated? (see
page 6)
2. Hot water operates but no central heating
(turboMAX plus only)
• Is the heating turned on? (see page 7/8).
• Are all external heating controls ON? (see page 8)
If your boiler still does not operate then please consult
your installer or Vaillant Service Solutions
0870 6060 777.
Status display
(For maintenance and service work performed by your
installer or service agent)
The status displays are activated by pressing the
„i“ button (1). The current status code, e.g. „S.34“ for the
frost protection mode, is shown on the display (2).
Pressing the „i“ button again will switch you back to the
normal mode. The „+“ and „-“ buttons will only be used
by your installer or service agent during service and
maintenance work.
DisplayMeaning
S.00*No heating required
S.01*Fan running
S.03*Ignition sequence
S.04*Burner ignited
S.05*Fan and water pump over run
S.07*Water pump over run
S.08*Anti cycling mode (after heating operation)
S.10**Hot water demand
S.14**Burner ignited
S.34*Frost protection mode
Table B.1: Status display (A complete overview of the status
codes can be found in the installation instructions).
*Heating operation
** Hot water operation (turboMAX plus only)
Fig. B.16: Status display
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83 36 90 _22 GB_R1 03/2003 Mü Subject to alteration
Head Office: Vaillant Ltd.
Service Solutions 0870-6060 777
Vaillant House
Trident CloseMedway City Estate
Rochester
Kent ME2 4EZ
Technical Advice 01634-29 23 92
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