3Description of the appliance ........................................................................................................................ 5
4Scope of the supply .................................................................................................................................... 5
5Mounting of the boiler.................................................................................................................................. 5
6Connecting the boiler .................................................................................................................................. 7
6.1Central heating system ..................................................................................................................... 8
9.1Explanation of the function keys ......................................................................................................16
1 0Filling and venting the boiler and installation...............................................................................................17
10.1 Central heating system ....................................................................................................................17
10.2 Hot water supply ..............................................................................................................................17
1 1Commissioning the boiler..........................................................................................................................18
11.1 Central Heating system....................................................................................................................18
11.2 Hot water supply ..............................................................................................................................18
1 2Isolating the boiler ......................................................................................................................................21
The appliance should only be installed by a Competent Gas Installer.
Installation instructions S-HR series page 3
1Introduction
These instructions describe the functioning, installation,
use and primary maintenance of ATAG central heating
units for United Kingdom and Ireland. Where necessary
different regulations of each country are separately
described.
Ireland:
-Irish standard 813
-Domestic gas installations
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.
These instructions are intended for the use of Corgi
registerd installers or registered Bord Gais installers in
connection with the installation and putting into operation
of ATAG units. It is advisable to read these instructions
thoroughly, well in advance of installation. Separate
instructions for use are supplied with the unit for users of
ATAG central heating units. 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 unit, give the customer
clear instructions concerning its use; present
the customer with the user’s manual and card.
Each unit is fitted with an identification plate. Consult the
details on this plate to verify whether the unit 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.
2Regulations
The ATAG Blauwe Engel boiler is a certified appliance
and must not be modified or installed in any way contrary
to this Installation Manual.
Manufactures instructions must not be taken in any way
as overriding statutory obligations.
The ATAG Blauwe Engel is a central heating unit with an
optional integrated hot water function. These units must
be connected according to these instructions and all
installation norms in respect of the part of the unit to be
connected.
Observe the following rules of safety:
-All work on the unit must take place in a dry
environment.
-ATAG units 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 unit:
-Shut down all programmes
-Close the gas tap
-Remove the plug from the wall socket
-Close the stop cock of the unit’s intake connection
Take note of the following when maintenance or
adjustments are needed:
-The unit must be able to function during these
activities; for this reason, the unit’s supply voltage,
gas pressure and water pressure must be
maintained. Ensure that these are not a source of
potential danger during these activities.
The following regulations apply to installation of ATAG
central heating units:
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.
Installation instructions S-HR series page 4
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 unit:
will only have to switch on once an hour. In this case the
aim is to obtain maximum comfort and efficiency.
This symbol indicates that the unit 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 unit 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.
Danger: High Voltage!
3Description of the appliance
The ATAG Blauwe Engel S-HR boiler is a room sealed,
condensing and modulating central heating boiler, with
or without an integrated hot water facility.
The built-in fan sucks the combustion air from outside
and provides full premixing of the gas and air. The gas
mixture is guided through the ceramic burner which is
fitted above the heat exchanger. As a result of the small
flame height a compact construction is possible. The
combustion gasses are exhausted after passing
through the stainless steel heat exchanger. The formed
condensate water is discharged through the waste trap.
The boiler has been tested according to valid CE*
standards and has a CE* certificate and SEDBUK Arating.
The operating efficiency of the boiler is higher than 98%
(on upper value Hs). As a result of its compact
construction the radiation, convection and stand by
losses are very low. The emission of damaging
substances is far below the standard set for equipment
with the gas quality-control label for clean combustion.
The boiler is provided with an automatic venting program.
In case of a recently topped up or filled up installation this
program takes care of the removal of any present air in the
boiler. In this case the control will check the water
pressure and if it is to low, will report this on the display.
In order to be able to anticipate installation heat
emissions the boiler has been fitted with a proportional
gradient control system. After the boiler goes into
operation this control provides a uniform increase of
power, instead of immediately burning at full power.
When the installation does require full power the control
will adjust as required. By this means a uniform increase
of the water temperature is effected.
If an outside sensor is connected, the control will
operate weather-dependent. This means that the
control measures the outside temperature and the flow
water temperature. On the basis of this data the control
calculates the optimal flow water temperature in the
installation.
The S-HR-T combination boiler provides a hot water
supply by means of a high output cylinder fitted on the
right hand side of the boiler. An adjustable thermostatic
mixing valve is fitted which provides a constant hot water
temperature (60°C factory setting).
4Scope of the supply
The boiler is supplied ready for use. The supply kit is
composed as follows:
-Boiler with casing;
-Automatic vent (inside the boiler);
-Safety valve (inside the boiler);
-Suspension bracket
-Filling and draining valve with T-piece;
-Fixing material consisting of plugs and screws;
-Template on the package wrapper;
-Installation instructions
-Operating manual;
-Warranty card;
-Benchmark logbook.
5Mounting of the boiler
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.
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 in
connection with fitting or removing of the casing. The
location of the boiler can be determined by using the
template located inside the boiler packaging.
The boiler anticipates the heat requirement of the central
heating installation or the hot water supply. As a result the
boiler will adjust its capacity to the installation and will
switch on less often, which means that the boiler will
operate longer and at a low level. It is possible that the boiler
These can be connected to the installation by means
of compression 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 an oval 24 mm plastic pipe. The drain
pipe can be connected to this by means of an open
g f r c e k w
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 80/125 mm.
-Cold and hot water pipes.
These consist of 15 mm copper pipe and can be
connected to the installation by means of
compression fittings.
g f r c e d
boiler pipes bottomfigure 2
When removing the plastic sealing caps from
the pipes, contaminated testing water can be
released.
It is advisable to spray-clean all of the unit’s
connecting pipes and/or to spray-clean/blowclean the installation before connecting it to
the unit.
Installation instructions S-HR series page 7
6.1Central heating system
e
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).
The boiler has a self-adjusting and self-protecting control
system for the load and the pump capacity. By this means
the temperature difference between the flow and return
water is checked. The circulation pump will be able to
supply the given water displacement with an installation
resistance of up to 20 kPa, for this see table 3.
pmuP
If the installation resistance is higher than the stated value
available water flow at full loadtable 3
tinufoepyt
epyt
REPUnim/lh/laPkrabm
51RH-S
06RH-S
06-025,907524024
T42/42RH-S
06-021,5180903003
T53/53RH-S
06-021,22423102002
T15/15RH-S
07-021,23429152052
07-028,73762202002
DC°02T
etarwolfretaw
elbissimrep
cnatsisernoitallatsni
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.
The S-HR 60 boiler has a circulation pump which has a
residual suction head for the installation of 20 kPa. This
means that the boiler can function normally in installations
which have an installation resistance of up to 20 kPa and
in cascade installations.
If the installation resistance is higher than 20 kPa, the
boiler will automatically reduce in power.
If the capacity of the boiler pump is insufficient, an extra
external pump can be installed in series with the boiler.
The electrical side of this external circulation pump can
be connected in the Control Tower, by which means this
pump switches at the same times as the boiler pump.
The maximum absorbed current consumption of the
external circulation pump may be 230 W (1 Amp).
Use with a low velocity header can also be selected. In
this case a larger secondary sided water output has to
be taken into account, in order to affect the maximum
water temperature.
the pump will rotate at maximum pump capacity and 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
to much then the boiler will switch itself off and wait until
an acceptable temperature has arisen.
100% UPER 20-70
H(m)
100% UPER 20-60
25% UPER 20-70
25% UPER 20-60
S-HR 15, 24, 35
S-HR 24Ti, 35Ti
S-HR 51Ti
S-HR 51, 60
external installation pump in series figure 3
Q(m³/h)
pump index lines graph 1
Installation instructions S-HR series page 8
6.2Expansion vessel
All ATAG Blauwe Engel S-HR-24T and 35T boilers are
provided with an expansion vessel on top of the cylinder.
This expansion vessel is connected to the three-way valve
and the circulation pump. By this means the expansion
water, when functioning for the hot water supply, is
prevented from being shut off from the expansion vessel
when the radiator thermostat valves are fully closed. The
ATAG Blauwe Engel S-HR 51T is provided with a
expansion vessel connection. The expansion vessel of
correct size must be connected to this pipe. A second
expansion vessel in the installation is not a problem.
The ATAG Blauwe Engel S-HR boilers are not equipped
with an expansion vessel connection. If a S-HR boiler is
combined with an Comfort cylinder, the expansion vessel
connection is included in the internal piping of the Comfort
cylinder, to which the expansion vessel can be connected.
If a different cylinder is used then one has to take into
account that the expansion vessel should be connected
between the three-way valve and the boiler circulation
pump.
external installation pump with low velocity header figure 4
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 sealed
system only.
Additives in the installation water are only
permitted in consultation with the country
distributor.
When using more than one boiler in an installation
please refer to the cascade installation instructions.
In connection with correct functioning of the
boiler it is necessary for the expansion vessel
to be connected to the expansion vessel pipe
of the boiler.
The expansion vessel which is used should be geared
to the water content of the installation. The pre-charge
pressure depends on the installation height above the
mounted expansion vessel.
evobathgiehnoitallatsni
lessevnoisnapxeeht
m5rab5,0
m01rab0,1
m51rab5,1
choice of expansion vesseltable 4
erusserpegrahc-erp
lessevnoisnapxeehtfo
The ATAG S-HR24 and S-HR35 boilers can be provided
with an expansion vessel module. By this means the
external expansion vessel is cancelled. This expansion
vessel module is placed behind the S-HR boiler, by which
means the expansion vessel is not noticeable. If the S-HR
boiler is provided with a ATAG Comfort cylinder the overall
depth will be equal. The content of the two expansion
vessels is 20 litres. The pre-charge pressure is 1 bar.
The expansion vessel module can be supplied with the
necessary pipes to connect with the S-HR boiler. The
connecting pipes for the installation correspond with
those of the boiler and have the same centre-to-centre
distance to the wall. When checking the expansion
vessels these are accessible via the left, right and upper
sides. From these sides the tanks are also removable
and the boiler does not have to be dismantled.
Installation instructions S-HR series page 9
515
expansion vessel module figure 5
The space which is required for mounting the expansion
vessel module corresponds with the required space for
mounting an S-HR boiler. They included template and
mounting strip for the S-HR boiler which can be used for
the expansion vessel module. The S-HR boiler is fitted on
to this after the expansion vessel module has been
mounted. The necessary mounting strip for the boiler is
present on the module.
Article numbers:
-the expansion vessel module without pipe
connectionsAA1EM09U
-pipe connections for expansion vessel module
AA1LE04U
480
145
370
wall
side view of the module with S-HR boilerfigure 7
(dimensions in mm)
6.3Underfloor 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.
660105
front view of the expansion vessel modulefigure 6
(dimensions in mm)
Installation instructions S-HR series page 10
6.4Gas connection
6.6Hot water supply S-HR 15, 24 and 35
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
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.
6.5Hot water supply (S-HR-T)
The sanitary water pipes can be connected to the
installation by means of compression fittings.
The cold water inlet on the S-HR-T boilers must be
provided with the following (counted in the water flow
direction):
- Dosing valve (supplied);
- Safety group;
- Expansion vessel 6bar (potable water, blue).
A dosing valve must be fitted in the cold water pipe. The
dosing valve provides that a quantity of water is supplied
which has a guaranteed outlet temperature of 60°C
(assuming a cold water temperature of 10°C). The
quantity of water is virtually unaffected by the water
pressure. With a water pressure lower than 1.5 bar it is
advisable to remove the inside mechanism of the dosing
valve. Connecting of the drinking water installation should
be done according to the national water laws.
Depending of the comfort preferences different external hot
water cylinders can be connected to the boiler. The choice
of the cylinder depends on the coil output. The coil output
must comply with the boiler output. The S-HR 15, 24 and
35 are provided with an internal 3 way valve. The return pipe
of the cylinder is simply connected to the connection under
the boiler. The flow pipe of the cylinder must be connected
to a T-piece in the flow pipe of the boiler. The electrical
connection are already made on the connection terminal in
the Control Tower. Only the wire of the cylinder sensor
should be connected to the terminal. See the wiring
diagram on page 14 and 15.
By the SH-R 51 and 60 with larger cylinder pipes (coil
resistance) we recommend the use of a cylinder pump.
6.7Condensation drain pipe
The collective condensation drain pipe should be connected
to the drain by means of an open connection. By this means
the possibility of drain gases ending up in the boiler is
prevented. The drain connection should have a minimum
diameter of 25 mm.
The following components are connected to the collective
condensation drain pipe:
-Condensation discharge;
-Safety valve;
Draining of the condensation water to the
external rain guttering is not permitted in
view of the danger of freezing.
Before putting the boiler into operation fill the
siphon with 300 ml of water.
Installation instructions S-HR series page 11
6.7Flue gas exhaust system and air supply
system
The appliance connection diameter is 80 mm, to which
the flue gas outlet and air supply system can be fitted,
with or without elbow pieces. It is also possible to use a
concentric connection. The maximum permissible pipe
length is set out in Table 5.
It is also possible to use a parallel pipe connection of 2x
80mm. In this case a seperate cover 125mm schould be
ordered.
We recommend that you use a stainless steel flue gas
outlet material. Using the ATAG icicle-free roof outlet
prevents ice from building up on the roof outlet.
Flue systems must comply with the current regulations.
It is essential that in practice, products of combustion
discharging from the terminal cannot re- enter the building or any other adjacent building through ventilators,
windows, doors, other sources of natural or mechanical
air infiltration from forced ventilation or air conditioning
systems.
United Kingdom:
The flue gas outlet and air supply installation must
comply with the current regulation requirements. IG UP
10 and BS 715.
Ireland:
-Irish standard is 813 section 9.10.1
ehtsedulcnimetsysylppusriadnasageulfetelpmocehT
.lanimretllawrofoorehtdnatcudegrahcsidsageulf
ehtrofsisertemnihtgnelepipdetatsmumixamehT
dnatinu
tinufoepytepipraenilmumixam
51RH-S71
T42/42RH-S71
T53/53RH-S5,11
T15/15RH-S5
06RH-S5,2
qe
.shtgnelepip
b°09x2
°09dneb2,1
°54dneb0,1
length supply and exhaust system table 5
.lanimretllawrofooreht
mm
.htgneldettimrepmumixamehtnihtiwsisihT.ertem
ehtneewtebecnatsidehtsidnametsystsuahxe/ylppus
521/08htiwsertemnihtgnel
eht,metsystsuahxeroylppusehtnisdnebgnisunehW
raenilehtotdeddaebtsum,wolebdetatshtgneltnelaviu
dnamm521/08tcudtsuahxesertem01htiw42RH-S:elpmaxE
4,21=ertem2,1x2+sertem01:snaemsihT.sdne
Horizontal sections of flue sections of the flue system
should always be installed sloping towards the boiler, in
order to avoid condensate lying in the flue system.
The minimum gradient is 30mm/Mtr. With the condensate
running back to the boiler the risk of ice forming at the
terminal is reduced.
The terminal should be located where dispersal of
combustion products is not impeded and with due
regard for the damage or discolouration that might occur
to building products in the vicinity (see fig 9).
In certain weather conditions condensation may also
accumulate on the outside of the air inlet pipe. Such
conditions must be considered and where necessary
insulation of the inlet pipe may be required.
figure 9
reliobdetsissanafrofnoitisoplanimret
muminim
ecnatsid
supply and exhaust systemfigure 8
Installation instructions S-HR series page 12
A
Bsepipniardrosepiplios,srettugwoleb
Csevaewoleb
Dfoortropracroseinoclabwoleb
Esepipliosdnasepipniardlacitrevmorf
Fsrenroclanretxerolanretnimorf
Glevelynoclabwolebrodnuorgevoba
Hlanimretagnicafecafrusamorf
Ilanimretagnicaflanimretamorf
J
Kllawemasehtnolanimretamorfyllacitrev
Lllawemasehtnolanimretamorfyllatnoziroh
Mllawaotlanimretlacitrevamorfyllatnoziroh
Dimensions table 6
kcirbria.g.e(
gnillewdotni)wodniw
gnineporehtorowodniwneponawolebyltcerid
mm003
mm57
mm002
mm002
mm57
mm003
mm003
mm006
mm0021
rood.g.e(tropracehtnignineponamorf
mm0021
mm0051
mm003
mm003
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