Atag E 22S, E 32S, E 22C, E 32C Installation And Servicing Instructions
8G.51.60.00/03.07 Changes reserved.
Installation & Servicing
Instructions
These instructions to be retained by user.
Boiler G.C No
E 22S 41-310-12
E 32S 41-310-13
E 22C 47-310-13
E 32C 47-310-14
CE PIN 0063BR3405
Installation & Servicing Instructions ATAG E-Series
2
Explanations of symbols and signs on the Control Tower display.
1
2
No heat requirement
Ventilation phase
Ignition phase
Burner active on central heating
Burner active on hot water
Fan check
Burner off when room thermostat is demanding
Pump overrun phase for central heating
Pump overrun phase for hot water
Burner off because of too high flow water temperature
Automatic venting program
3
4
5
6
7
8
9
A
Water pressure is to low (<1,0 bar),
flashing FILL will alternate with indication
of water pressure, boiler power of 50% is
possible. The installation needs to be
topped up.
Operation indication
(in the first display position of technical read out)
Water pressure is to high (>2,8 bar), if
HIGH indication remains continuously
visible, the boiler is taken out of operation.
The installation pressure needs to be
decreased by draining water.
Water pressure is to low (<0,7 bar), FILL
indication remains continuously visible,
the boiler is taken out of operation. The
installation needs to be topped up.
0
From "Good" read-out to Technical read out (and vice versa):
- Press STEP key for 5 sec.
display
Central heating on / off
Domestic hot water (DHW) on / off
Pump program on / off
Step key Selecting chapters
Mode key Selecting chapters
Reset key Unlocking the boiler
in case of error
Installation & Servicing Instructions ATAG E-Series
3
Content
1 Introduction ................................................................................................................................... 4
2 Regulations................................................................................................................................... 4
3 Scope of the supply ...................................................................................................................... 6
4 Description of the boiler................................................................................................................. 6
5 Mounting the boiler ....................................................................................................................... 6
5.1 Dimensions........................................................................................................................ 7
6 Connecting the boiler .................................................................................................................... 9
6.1 Central heating system ...................................................................................................... 9
6.2 Expansion vessel.............................................................................................................11
6.3 Underfloor heating system (plastic pipes)......................................................................... 12
6.4 Gas connection ...............................................................................................................12
6.5 Hot water supply.............................................................................................................. 12
6.6 Condensation drain pipe................................................................................................... 13
6.7 Flue gas exhaust system and air supply system ............................................................. 14
6.7.1 Dimensions of the flue gas and air intake duct ................................................................. 17
7 External hot water cylinders........................................................................................................ 18
8 Electrical connection................................................................................................................... 19
9 Boiler controls............................................................................................................................. 21
9.1 Explanation of the function keys ...................................................................................... 22
10 Filling and venting the boiler and installation................................................................................ 23
10.1 Hot water supply.............................................................................................................. 23
11 Commissioning the boiler............................................................................................................ 24
11.1 Central heating system .................................................................................................... 24
11.2 Hot water supply.............................................................................................................. 24
11.3 Adjustments .................................................................................................................... 25
11.4 Activating factory settings (green key function) ................................................................ 27
12 Isolating the boiler...................................................................................................................... 28
13 Commissioning ........................................................................................................................... 28
13.1 Checking for contamination.............................................................................................. 28
13.2 Checking of the zero pressure control .............................................................................. 29
13.3 Checking the CO2............................................................................................................ 30
14 Maintenance ............................................................................................................................... 31
14.1 Frequency of maintenance............................................................................................... 31
14.2 Maintenance activities...................................................................................................... 32
14.3 Warranty.......................................................................................................................... 32
15 Technical specifications .............................................................................................................. 33
16 Parts of the boiler........................................................................................................................ 34
17 Installation examples .................................................................................................................. 35
17. 1 Radiator installation without thermostatic radiator valves .................................................. 35
17. 2 Radiator installation with underfloor heating zone ............................................................. 36
18 Error indication............................................................................................................................ 37
19 Declaration of conformity............................................................................................................. 38
20 KIWA Certificate ......................................................................................................................... 39
The appliance should only be installed by a Competent Gas Installer.
Work on the boiler must be carried out by a competent person, (Ref: Gas
Safety Installation and Use Regulations) using correctly calibrated
instruments with current test certification.
Installation & Servicing Instructions ATAG E-Series
4
1 Introduction
These instructions describe the functioning, installation, use and primary maintenance
of ATAG central heating boilers for the United Kingdom and Ireland. Where necessary the
different regulations for each country are separately described.
These instructions are intended for the use by Corgi registered installers or registered
Bord Gais installers in connection with the installation and putting into operation of ATAG
boilers. It is advisable to read these instructions thoroughly, well in advance of installation.
Separate instructions for use are supplied with the boiler for users of ATAG central heating
boilers. ATAG is not liable for the consequences of mistakes or shortcomings which have
found their way into the installation instructions or user’s manual. Further, ATAG
reserves the right to alter its products without prior notification.
When delivering the boiler, give the customer clear instructions concerning its
use; present the customer with the user’s manual and card.
Each boiler is fitted with an identification plate. Consult the details on this plate to verify
whether the boiler is compliant with its intended location, e.g.: gas type, power source
and exhaust classification.
On completion of the installation the installer or commissioning engineer must fill out and
complete the Benchmark commission section of the boiler log book and hand to customer
or end user for future record keeping. The Benchmark log book must also be filled out and
completed by the service agent following each service call, and returned to the customer.
A copy of the Benchmark commissioning certificate must be returned to ATAG Heating UK
Ltd along with the warranty registration card to register the appliance for the standard
warranty benefits
Relevant Installation, Service and User manuals:
- ATAG Monopass Flue system guide
- ATAG BrainQ Digital room thermostat
- ATAG MadQ Cascade-/Zone controller
2 Regulations
The following regulations apply to installation of ATAG central heating boilers:
Legislation and Regulations.
Gas Safety (Installation and Use). All gas appliances must by law, be installed by a
competent person, eg. Members of CORGI and in accordance with the current Gas Safety
Regulation. Failure to install appliance correctly could lead to prosecution.
In addition to the above regulations this appliance must be installed in compliance with the
current IEE Regulations, the Building Standards (Scotland Consolidation) Regulations.
Regulations and bye laws of the Local Water Authority and the Current Health and Safety
Regulation.
Ireland:
- Irish standard 813
- Domestic gas installations
Installation & Servicing Instructions ATAG E-Series
5
The current, Electricity at Work Regulation must be complied with and also be in
accordance with the relevant and current editions of the British Standards.
The ATAG E boiler is a certified appliance and must not be modified or installed in any
way contrary to this Installation Manual.
Manufacturers instructions must not be taken in any way as overriding statutory
obligations.
The ATAG E is a central heating boiler with an optional integrated hot water function.
These boilers must be connected according to these instructions and all installation
norms in respect of the part of the boiler to be connected.
Observe the following rules of safety:
- All work on the boiler must take place in a dry environment.
- ATAG boilers may never be in operation without their housing, except in connection
with maintenance or adjustments (see Chapter 13 and 14).
- Never allow electrical or electronic components to come into contact with water.
Carry out the following tasks in connection with maintenance, etc. to an already-
installed boiler:
- Shut down all programs
- Close the gas tap
- Remove the plug from the wall socket
- Close the stop cock of the boiler’s intake connection
Take note of the following when maintenance or adjustments are needed:
- The boiler must be able to function during these activities; for this reason, the boiler’s
supply voltage, gas pressure and water pressure must be maintained. Ensure that
there is not a source of potential danger during these activities.
Following maintenance or other activities; always check the installation of all
parts through which gas flows (using leak-search spray).
Following maintenance or other activities, always replace the housing and
secure it with the screw behind the door at the front of the casing.
The following (safety) symbols may be encountered in these installation instructions
and on the boiler:
This symbol indicates that the boiler must be stored away from frost.
This symbol indicates that the packaging and/or contents can be damaged as
a result of insufficient care taken during transport.
This symbol indicates that, whilst still in its packaging, the boiler must be
protected from weather conditions during transport and storage.
KEY-symbol. This symbol indicates that assembly or dismantling, must be
carried out.
ATTENTION symbol. This symbol indicates that extra attention must be paid
in connection with a particular operation.
Useful tip or advice
Installation & Servicing Instructions ATAG E-Series
6
3 Scope of the supply
The boiler is supplied ready for use. The supply kit is composed as follows:
• Boiler with casing; • Template;
• Automatic vent (inside the boiler); • Installation instructions
• Safety valve (inside the boiler); • Operating manual;
• Suspension bracket • Warranty card;
• Expansion vessel (inside the boiler) • Benchmark logbook.
• Fixing material consisting of plugs and
screws;
4 Description of the boiler
The ATAG E boiler is a room sealed, condensing, modulating central heating boiler, with
or without an integrated hot water facility.
The boiler is provided with a compact stainless steel heat exchanger with smooth
tubes. A well thought out principal using durable materials.
The boiler burns gas for supplying warmth. The heat is transferred in the heat
exchanger to the water in the central heating system. By cooling down the flue gasses
condensate is formed. This results in high efficiency. The condensate, which has no
effect on the heat exchanger and the function of the boiler, is drained through an
internal siphon.
The boiler is provided with an intelligent control system (CMS Control Management
System). The boiler anticipates the heat demand of the central heating system or the hot
water facility.
When an outside sensor is connected, the boiler works weather dependantly. This
means that the boiler control measures the outside temperature and flow temperature.
With this data the boiler calculates the optimal flow temperature for the installation.
Explanation of the type indication: ATAG E 22C
E = Type
22 = Nominal load in kW
C = Combi (S = Solo)
The boiler has been tested according to valid CE* standards and has a CE* certificate
and SEDBUK A-rating.
Statement: No banned materials including asbestos, mercury, CFC's have or will not be
included in the product.
Room sealed boiler
The boiler retrieves its
combustion air from the
outside then discharges
the flue gasses to the
outside.
Condensing
Retrieves heat from the
flue gasses. Water
condensates on the
heat exchanger.
Modulating
Higher or lower burning
according to the heat
demand.
Stainless Steel
Super solid kind of
steel which keeps its
quality for life. It will not
rust or erode in contrast to composition
materials, like aluminium.
Installation & Servicing Instructions ATAG E-Series
7
5 Mounting the boiler
The room where the boiler will be placed must always be frost free. The boiler casing is
splash water tight (IPX4D) and is suitable to be installed in e.g. a bathroom.
It is NOT necessary to have a purpose provided air vent in the room or internal space in
which the boiler is installed. Neither is it necessary to ventilate a cupboard or
compartment in which the boiler is installed, due to the extremely low surface
temperature of the boiler casing during operation. Therefore the requirements of BS 6798,
Clause 12, and BS5440:2 may be disregarded.
The boiler can be mounted practically to any wall with the suspension bracket and the
enclosed fixing equipment. The wall must be flat and of sufficient strength in order to be able
to carry the boiler weight with its water content.
Above the boiler there must be at least 250 mm working space in order to be able to fit
a coaxial flue system or a twin supply. On the left side of the boiler at least 50 mm and
on the right side 10 mm must be reserved to allow fitting or removing of casing. The
location of the boiler can be determined by using the template.
Remove the casing of the boiler. The casing is also the airbox of the boiler and is secured
with a screw behind the door at the front. Also the four quick-release fasteners (2 at the
top and 2 at the bottom) should be secured with a screw.
First remove the screws before loosening the quick-release fasteners.
Tighten the screws again when replacing the housing.
Lifting and carrying precautions:
- Lift only a manageable weight, or ask for help.
- When lifting the boiler, bend the knees, and keep the back straight and feet apart.
- Do not lift and twist at the same time.
- Lift and carry the boiler close to the body.
- Wear protective clothing and gloves to protect from any sharp edges.
Removing the casing figure 1
Lift the boiler only by the boilers rear wall.
Installation & Servicing Instructions ATAG E-Series
8
5.1 Dimensions
type of unit E22S E22C E32S E32C
A height
mm 650 650 650 650
B height with expansion vessel
mm - - 870 870
C width
mm 500 500 500 500
Ddepth
mm 395 395 395 395
E left side / flue gas exhaust
mm 335 335 335 335
F centre to centre / flue - airintake
mm 120 120 120 120
G back / flue gas exhaust
mm 270 270 270 270
H left side / gas pipe
mm 250 250 250 250
J left side / flow pipe
mm 150 150 150 150
K left side / return pipe
mm 350 350 350 350
L left side / condensation pipe
mm 405 405 405 405
N left side / cold water pipe
mm 285 285
P left side / hot water pipe
mm 215 215
Q pipe lenght of g*
mm 19 19 215 215
R pipe lenght of c*
mm 40 40 40 40
S pipe lenght of c and f;r;k and w *
mm 50 50 160 160
T back / centre of pipe c;k and w*
mm 26 26 26 26
U back / centre of pipe f;g and r*
mm 50 50 50 50
dimensions table 1
dimensions (in mm) figure 1
wall
ceiling
minimal 250mm
minimal
10 mm
D
F
R
S
C
P
T
Q
H
J
K
L
G
U
N
E
B
A
type of unit E22S E22C E32S E32C
air supply / flue gas system
mm 60 / 100 60 / 100 60 / 100 60 / 100
gas pipe - g
½"
female½"female½"female½"female
central heating flow pipe - f
22 mm 22 mm ¾" ext. ¾" ext.
central heating return pipe - r
22 mm 22 mm ¾" ext. ¾" ext.
condensation discharge pipe - c
22 mm 22 mm 22 mm 22 mm
cold water pipe - k
15 mm ½"ext.
hot water pipe - w
15 mm ½"ext.
connection diameters table 2
boiler connections/mounting points
figure 3
54
332
619,5
337
supporting point
52
220
f w g k r c
Installation & Servicing Instructions ATAG E-Series
9
6 Connecting the boiler
The boiler has the following connection pipes;
- The central heating pipes.
These can be connected to the installation by means of compression fittings /
adapter fittings;
- The gas pipe.
It is provided with a female thread into which the tail piece of the gas valve can be
screwed;
- The condensation drain pipe.
It consists of a 22mm plastic pipe. The drain pipe can be connected to this by means
of an open connection. If the open connection is fitted in a different location, then the
pipe can be lengthened by means of a 32 mm PVC sleeve;
- The flue gas exhaust system and air supply system.
It consists of a concentric connection 60/100 mm.
- Cold and hot water pipes.
Only Combi boilers: These consist of 15 mm copper pipe and can be connected
to the installation by means of compression fittings / adapter fittings.
It is recommended that isolation valves are fitted to all heating and hot water
connections to facilitate ease of future maintenance.
It is advisable to spray-clean all of the boiler’s connecting pipes and/or to
spray-clean/blow-clean the installation before connecting it to the boiler.
6.1 Central heating system
Connect the central heating system according to the actual regulations.
The boiler pipes can be connected to the installation by means of compression fittings.
Reducers should be used for connecting to thick-walled pipe (welded or threaded).
When removing the plastic sealing caps from the pipes, contaminated testing
water may be released.
The boiler has a self-adjusting and self-protecting control system for the load. By this means
the temperature difference between the flow and return water is checked. Table 3 shows the
water displacement which supplies the circulation pump at certain installation resistance.
If the installation resistance is higher than the stated value the load will be adjusted until
an acceptable temperature difference between flow and return water has been obtained.
If, after this, the temperature difference remains too much then the boiler will switch itself
off and wait until an acceptable temperature has been reached.
type of unit
Pump
type
wate r flo w rate
'
''
'T 20°C
permi ssi bl e
installation
resistance
l/min l/h kPa mbar
E22S
UPS 20-50 14,3 856 28 280
E32S
UP 20-60 20.7 1244 17 170
E22C
UPS 20-50 14,3 856 27 270
E32C
UP 20-60 20.7 1243 15 150
Installation resistance table 3
Installation & Servicing Instructions ATAG E-Series
10
If an unacceptable temperature is detected, then the control will repeatedly try to achieve
water flow, and if this does not work then the boiler will switch off.
If the capacity of the boiler pump is insufficient, an extra external pump can be installed
in combination with a low velocity header in series with the boiler. The electrical side of
this external circulation pump can be connected in the Control Tower, by means of an
optional cable tree, which can be ordered seperately (art.nr. S4643900). The external
pump will switch at the same times as the boiler pump.
The maximum absorbed current consumption of the external circulation pump may be
230 W (1 Amp). The extra external pump must be selected according to the installation
resistance and the required flow.
pump index lines graph 1
As standard the boiler is provided with a water filter in the return pipe of the boiler. With
this, possible contamination of the central heating water is prevented from ending up in
the boiler. The boiler is also provided with an internal safety valve set at 3 bar. This is
connected to the waste discharge together with the condensation discharge.
If all, or a large part of the radiators are provided with thermostatic radiator valves it is
advisable to use a pressure difference control (bypass) in order to prevent flow problems
in the installation.
The boiler is designed to be used on a sealed system only.
Additives in the installation water are only permitted in consultation with the
country distributor. ATAG Heating UK Ltd recommend the use of either
Fernox or Sentinel products.
Q(m³/h)
E22S, E32C
E22C, E32S
UP 20-60
H(m)
UPS 20-50
Installation & Servicing Instructions ATAG E-Series
11
6.2 Expansion vessel
All ATAG E-Series boilers are provided with an internal expansion vessel.
The vessel of the E22S and E22C is positioned inside the boiler casing. This expansion
vessel has a pre-charge pressure of 1 bar and a capacity of 8 litres.
The vessel of the E32S and E32C is positioned directly beneath the boiler and together
with the casing forms a single entity with the boiler.
The expansion vessel is located vertically behind the casing, which can be removed by
pulling forwards. The expansion vessel has a pre-charge pressure of 1 bar and a capacity
of 12 litres.
If a larger capacity expansion vessel is needed for the installation a standard expansion
vessel should be fitted additionally.
If the internal expansion vessel is not sufficient, choose an expansion vessel volume, of
which the summary is geared to the installation’s water capacity. The pre-charge pressure
depends on the installation height above the expansion vessel (Table 4). Fit the expansion
vessel into the return pipe as close as possible to the boiler.
choice of expansion vessel table 4
insta lla tio n heigh t a bove
the expansion vessel
pre-charge pressure
of the expansion vessel
5 m 0,5 bar
10 m 1,0 bar
15 m 1,5 bar
Installation & Servicing Instructions ATAG E-Series
12
6.3 Underfloor heating system (plastic pipes)
When connecting or using an underfloor heating system, designed with plastic pipes, or
plastic pipes are used elsewhere in the installation,one should ensure that the plastic
pipes used comply with the DIN 4726/4729 standard. It is set out in this standard that
the pipes may not have oxygen permeability higher than 0.1 g/m³.d at 40°C. If the system
does not comply with this DIN standard, the underfloor heating component will have to
be separated from the central heating appliance by means of a plate exchanger.
No recourse can be made to the terms of the warranty in the event of failure
to observe the regulations pertaining to plastic underfloor heating pipes.
6.4 Gas connection
The appliance pipe is fitted with an internal thread, into which the tail piece of the gas tap
can be screwed.
United Kingdom:
The gas supply must comply to the current Gas Safety, Installation & Use Regulations.
Ireland:
- Irish standard 813
- Domestic gas installations
The connection to the appliance must include a suitable method of disconnection and a
gas control cock must be installed adjacent to the appliance for isolation purposes. The
nominal inlet working gas pressure measured at the appliance should be 20 mbar for Nat
gas (G20).
Make sure that the gas pipe work does not contain dirt, particularly with new
pipes.
When the boiler has to be converted from natural gas to LPG, ATAG provides special
kits for this purpose. Special instructions are supplied with the kit.
Always check the installation of all of the parts through which gas flows
(using leak-search spray)
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