Atag XL75W Release note

1
8G.51.48.00 / 07.20 Changes reserved.
Installation & Servicing Instructions
XL75W
XL105W
XL125W
XL150W
XL180W
XL210W

2
Table of contents
Safety regulations General regulations .................................................... 3
Intended use .............................................................. 3
Standards and regulations ......................................... 3
Product description Functional description - ATAG XL W........................... 4-5
Hydraulic circuit diagram ............................................ 6
Technical data / ERP data .......................................... 7
Dimensions................................................................. 8-9
Delivery scope Standard version / Accessories .................................. 10
Cascade ..................................................................... 11
Cascade exampless ................................................... 12-14
Cascade accessories ................................................. 15-17
Installation Boiler transport ........................................................... 18
Disassembly of panelling............................................ 18
Installation / Connections ........................................... 19
Hydraulics Circulation pumps..................................... 20
Cascade wall mounted in line..................................... 21
Cascade free-standing in line..................................... 22
Cascade free-standing back-to-back.......................... 23
Connecting the boiler ................................................. 24
Cascade accessories ................................................. 25
Connecting 1 boiler .................................................... 26
Dimensions headers, low loss headers and bends .... 27
Dimensions low loss header....................................... 28
Heating water quality.................................................. 29
System water additives .............................................. 30
DHW quality ............................................................... 31
Expansion vessel ....................................................... 31
Gas line ...................................................................... 32
Condensate connection.............................................. 33
Hot water supply......................................................... 34
  $LUÀXHJDVGXFWV..................................................... 35-38
  &ROOHFWLYHÀXHJDVRXWOHW ............................................ 39-40
Electrical connection .................................................. 41-44
Multi function .............................................................. 45-47
Temperature sensors.................................................. 48
External controls......................................................... 49
eBus2 controls............................................................ 50
Wiring diagram ........................................................... 51-52
Boiler setting Boiler setting............................................................... 54
Operation Description of display ................................................. 55
Description of display and keyboard .......................... 56
Structure of the User Menu ........................................ 57
Change the settings (expert level).............................. 58
Parameter listing ........................................................ 59-74
Detail parameter description ....................................... 75
Function Thermoregulation......................................... 76
Time programs Heating .............................................. 77
Automatic summer / winter changeover ..................... 78
Commissioning Change the language on the screen .......................... 79
Change the time and date .......................................... 80
Parameter adaption to the heating system................. 81-82
Weather compensation............................................... 83
Inspection ................................................................... 84
Flue gas analysis........................................................ 85-87
Full load (Step 1/3) ..................................................... 85
Low load (Step 2/3) .................................................... 86
Adjustment on the gas valve (Step 3/3) ..................... 87
Maintenance Decommissioning and maintenance works ................ 88
Inspection and maintenance interval.......................... 88
Maintenance details ................................................... 89-93
Counter running hours ............................................... 93
` Inspection overview.................................................... 94
Maintenance overview................................................ 95
 (UURUV (UURUFRGHVDQGIDXOW¿QGLQJ ...................................... 96-98
Reset a Fault code ..................................................... 99
View Error code History ............................................. 100
Disposal and recycling ............................................... 101
Appendix Sensor resistance ...................................................... 102
Standard schemes ..................................................... 103-106
Declaration of conformity ................................................................................... 107

3
Safety regulations
General regulations
Intended use
Standards and regulations
General regulations
This document contains important
information with regard to safety and
reliability of the installation, its commis-
sioning and the operation of the ATAG
XL W L boiler. All described activities
must be carried out exclusively by
authorized technicians.
Only original parts may be used; in
contrary cases, our warranty and gua-
rantee provisions are excluded.
Intended use
The ATAG XL W is a condensing and
modulating gas boiler, which is sus-
pended from walls and is delivered with
a pre-mix burner. The maximum target
temperature of the boiler is 90°C.
Standards and regulations
All applicable standards (both European
and national) must be observed during
the installation and operation of the
ATAG XL W boiler, including:
- Local building regulations, with
regard to the installation of heating
facilities and waste gas exhaust
systems;
- Regulations about a connection to
the electrical utility network (mains);
- Regulations of the local gas utility;
- Standards and regulations
concerning safety facilities for
heating systems;
- Additional local laws/regulations,
which are applicable to the
installation and operation of heating
systems.
- See the chapter “Commissioning”,
for those regulations applicable
to heating water and warm water
quality.
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and conforms to the following
European directives and standards:
- 92 / 42 / EEC
 (ႈFLHQF\RIKRWZDWHUKHDWLQJ
systems
- 2016 / 426 / EU
Gas appliance regulation
- 2014 / 35 / EU
Low voltage directive
- 2014 / 30 / EU
EMC directive
- EN 15502-1
 5HTXLUHPHQWVIRUJDV¿UHGV\VWHPV
– Part 1: General requirements and
tests
- EN 15502-2
 5HTXLUHPHQWVIRUJDV¿UHGV\VWHPV
– Part 2-1: Type C such as B2, B3
and B5 with nominal caloric debit
=< 1000 kW
- EN 55014-1 (2011) EMC –
Requirements for household
appliances, electrical tools and
similar equipment – Part 1:
Emissions
- EN 55014-2 (2008) EMC –
Requirements for household
appliances, electrical tools and
similar equipment – Part 2: Safety -
product family standard
- EN 61000-3-2 (2013)
Electromagnetic compatibility
(EMC) - Part 3-2: Framework
conditions - framework conditions
IRUFXUUHQWÀXFWXDWLRQVFXUUHQW
drain 16 A per phase)
- EN 61000-3-3 (2014)
Electromagnetic compatibility
(EMC) - Part 3-3: Framework
FRQGLWLRQVIRUYROWDJHÀXFWXDWLRQV
YROWDJHORVVDQGÀLFNHULQSXEOLF
low-voltage networks, for equipment
with a nominal 16 A current per
phase, which are not subject to any
special connection regulations.
- EN 60335-1 (2011) Household
and similar electrical equipment
- Safety - Part 1: General
requirements
- EN 60335-2-102 (2006/A1-2010)
Household and similar electrical
equipment - Safety - Part 1:
Special requirements for gas, oil
DQGVROLGIXHO¿UHGHTXLSPHQWZLWK
electrical connections
It is necessary that the currently valid
local normatives will be observed.
UK:
British Standards
- BS 5440 - BS 6644 - BS 6891 -
BS 7074 - BS 8552 -
BS EN 60335 Pt1 - BS EN 12828
IGEM Documents
- IGE/UP/1&1A - IGE/UP/2 -
IGE/UP/10
UK Regulation
- Clean Air Act 1993
- IEE Regulations
- Building Regulations
- Gas Safety (Installation & Use) Reg.
Other Guidance
- ICOM - BSRIA Documents
BG29/2012
- BG50/2013 - CIBSE Guides
(B1, C, F)
- HSE - INDG 436
Incorrect operation can cause
damage to the boiler and system
components and has the potential
to introduce hazards. Only persons
with appropriate knowledge and
TXDOL¿FDWLRQVVKRXOGEHDOORZHGWR
make adjustments to the boiler and
associated equipment.
The equipment may not be
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ZLWKDKLQGUDQFHRIERGLO\
PHQWDORUVHQVRU\FDSDFLWLHV
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supervised or have received
corresponding instructions.
It must be ensured that children
cannot play with the equipment.

4
Product description
ATAG XL W Double Engine
3
11 14 15 13
20 10 19
24
12
APS
6
5
21
9
3
4
T1a
T1
2
18
17
T2
16
6
5
9
4
3
T1a
T1
1
18
T2
17
8
7
P1
RAG
C
2726 26
23 22
LVHV

5
Product description
The ATAG XL W is a condensing and
modulating gas boiler with one or two
pre-mix burners, which is attached to a
wall. It is characterized by the following
features:
- A large modulation range that
guarantees a long burner service
life, while minimizing standby
losses, start-up emissions and
material wear-and-tear.
- Flue gas temperature below 80°C
- Also suitable for room sealed
conditions
- Control panel with all operational
elements
- Microprocessor, with multi-
functional display
- Automated ignition, with repetition
and ionization monitoring
- Water pressure monitoring
- Energy-saving pump
- Stainless steel heat exchanger
with smooth tube condenser
- Very maintenance-friendly
- Ready for weather-dependent
control (accessory)
- Cascadecontroller up to 8 boilers
- External controls (accessory) by
RQRႇH%XVRU9
- Modern metal panelling,
stove-enamelled
Functional description
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performance to the current heating
requirements, by changing the
default values of the fan rotating
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temperature is continually measured
via a sensor. In case of a deviation
of the actual temperature from the
target temperature, the control unit
reacts immediately and adjusts the
RPM of the fan, and with that the boiler
performance via the gas armature.
A deviation can be due to:
- A changed default value of the
boiler temperature, via the boiler
heating control unit
- A change on the outdoor
temperature
- Request for Domestic Hot Water
- Changed heating curve
By means of the integration of the
individual components in a system,
and within the control range of the
equipment, it is ensured that the boiler
performance always corresponds to the
actual heating requirements.
Delivery scope
The boiler, which has been assembled
at the factory and is ready to use,
is delivered in cardboard packaging.
The following is contained in the
delivery scope of the ATAG XL W :
 0RGXODWLQJKLJKHႈFLHQF\
JDV¿UHGERLOHUWRN:
 +LJKHႈFLHQF\SXPSV
- Boiler/Cascade controller
Accessories:
 %RLOHUFRQQHFWLRQ¿WWLQJV
- Headers for 2 and 3 boilers
- Low loss headers up to 1600kW
- Plate heat exchanger up to 800kW
- Insulation packs
- Boiler frames for free standing units
 ([KDXVWSLSHFRQQHFWLRQ¿WWLQJV
- Control for 3 extra heating zones
- Open bus interface
For detailed information see the
chapter “delivery scope”.
Legend:
1. heat exchanger 1 (see table)
2. heat exchanger 2 (see table)
3. ignition electrode
4. detection electrode
5. fan unit
6. venturi
7. gas valve
8. automatic air vent
9. manual air vent
10. main switch 230V
11. boiler control unit
12. control unit HMI
13. connection terminal
14. connection terminal cascade
bus communication
15. connection terminal pc
16. dirt collector
17. circulation pump
18. water no return valve
 ÀXHFRQQHFWLRQ
20. air supply
 FROOHFWLYHÀXHSLSH
22. data plate
23. drainage cap
24. clip 3 zone (optional)
 DLUÀXHFRQQHFWLRQFRQFHQWULF
(optional for ATAG XL W
75-105-125-150)
26. water pipe connection
1 1/2" (optional)
27. gas pipe connection
1" (optional)
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T2 return sensor
P1 water pressure sensor
APS Air Pressure Switch
HV high voltage electrical supply
LV low voltage electrical supply
G gas pipe
$ ÀRZSLSH&+
R return pipe CH
C condensate drain pipe
Product description
ATAG XL W
Boiler type ([FKDQJHU ([FKDQJHU
75 iCon XL1 -
105 iCon XL2 -
125 iCon XL1 iCon XL1
150 iCon XL1 iCon XL1
180 iCon XL2 iCon XL1
210 iCon XL2 iCon XL2

6
Product description
ATAG XL W hydraulic circuit diagram
Legend:
1 heat exchanger 1 = burner A
2 heat exchanger 2 = burner B
3 ignition
4 ceramic burner
5 gas valve
6 fan
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8 venturi
9 automatic air vent
10 circulation pump
11 control unit HMI
12 burner control unit
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14 air inlet
15 water non return valve
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T2 return sensor
P1 water pressure sensor
G gas pipe
$ ÀRZSLSH&+
R return pipe CH
C condensate drain pipe
14 13
12
11
15 15
10
7 7
4 4
3 3
9
5 5
10
1 2
6 6
8 8
P1
RACG
T1a T1a
T2 T2
T1 T1
Burner B
Burner A

7
Product description
Technical data
ErP data
Tipe ATAG XL W 75 105 125 150 180 210
Permit
Category
Heat exchanger type iConXL1 iConXL2 iConXL1
iConXL1
iConXL1
iConXL1
iConXL1
iConXL2
iConXL2
iConXL2
Output G20 Full load 80/60°C kW 65,4 90,2 110,8 130,5 155,5 180,3
40/30°C kW 72,0 99,0 122,2 142,4 170,9 197,4
Low load 80/60°C kW 14,6 18,1 14,7 14,6 14,6 18,1
40/30°C kW 16,1 19,9 16,2 16,0 16,1 19,8
G31 Full load 80/60°C kW 65,4 90,2 110,8 130,5 155,5 180,3
40/30°C kW 72,0 99,0 122,2 142,4 170,9 197,4
Low load 80/60°C kW 23,2 34,3 23,3 23,2 23,2 34,3
40/30°C kW 25,6 37,7 25,7 25,3 25,5 37,6
Input G20 Full load kW 66,7 92,3 112,8 133,2 158,8 184,5
Low load kW 14,9 18,5 14,9 14,9 14,9 18,5
G31 Full load kW 66,7 92,3 112,8 133,2 158,8 184,5
Low load kW 23,6 35,0 23,6 23,6 23,6 35,0
Gas consumption G20 Full load m3/h 7,06 9,77 11,94 14,10 16,80 19,52
Low load m3/h 1,57 1,95 1,57 1,57 1,57 1,95
G31 Full load m3/h 2,72 3,76 4,60 5,43 6,47 7,52
Low load m3/h 0,96 1,43 0,96 0,96 0,96 1,43
%RLOHUHႈFLHQF\ Full load 80/60°C % 98,0 97,7 98,2 98,0 97,9 97,7
Full load 40/30°C % 108,0 107,3 108,3 106,9 107,6 107,0
Low load 80/60°C % 98,3 97,9 98,5 98,3 98,2 97,9
Low load 40/30°C % 108,4 107,6 108,7 107,3 107,9 107,3
Gas type Natural gas or Propane gas
CO2natural gas
min./max
Vol. % 8,7 / 9,0
CO2propane gas
min./max
Vol. % 10,2 / 10,8
O2natural gas
min./max
Vol. % 5,3 / 4,8
NOx class 6 6 6666
0D[ÀXHJDVWHPSHUDWXUH 80/60°C 61 71 62 61 72 71
0DVVÀRZRIÀXHJDV kg/h 119,8 165,8 202,6 239,3 285,3 331,5
Overpressure at boiler output
max
Pa 156 243 143 200 215 265
Water volume in heating circuit
max
l 9,3 13,9 16,8 16,8 21,3 25,8
Weight kg 73 80 127 127 132 140
Gas pressure nominal mbar 20
Gas pressure min / max mbar 17 / 25
Water pressure
min./max
bar 0,7 / 6
Voltage / frequency
min./max
Volt/Hz 230 / 50
Max power consumption W 155 250 260 375 428 430
Power consumption part load W 53 53 55 55 51 51
Power consumption stand-by W 5 5 6,8 6,8 6,8 6,8
Height/Width/Depth mm 1050/530/595 1050/530/675 1050/690/595 1050/690/675
Gas Coupling R
Flow / Return Coupling R
Fluegas Outlet Diameter DN 100 100 100 100 130 130
Air inlet Internal in mm 100 100 100 100 130 130
Condensate tube External in mm 35 35 35 35 35 35
Type ATAG XL W 75 105 125 150 180 210
ErP data according to 2010/30/EU and 811/2013/EU
6HDVRQDOURRPKHDWLQJHQHUJ\HႈFLHQF\FODVV A
Nominal heat output Pn(kW) 65 90 111 131 156 180
6HDVRQDOURRPKHDWLQJHQHUJ\HႈFLHQF\FODVV Șs(%) 93 93 93 93 93 93
Annual energy consumption QHE (GJ) 202 280 342 404 482 558
Noise output level, inside LWA (dB) 65 60 67 70 67 63
At rated heat output and high-temperature regime (80/60°C) P4 (kW) 65,3 90,2 110,8 130,6 155,6 180,3
At 30 % of rated heat output and low-temperature regime (36/30°C) P1 (kW) 21,8 30,2 37,0 43,7 52,0 60,4
At rated heat output and high-temperature regime (GCV) Ș 88,2 87,9 88,4 88,2 88,2 87,9
At 30 % of rated heat output and low-temperature regime (GCV) Ș 98,3 98,2 98,4 98,3 98,2 98,2
At full load elmax (kW) 0,137 0,120 0,314 0,418 0,464 0,450
At part load elmin (kW) 0,045 0,095 0,066 0,071 0,109 0,099
In standby mode Psb (kW) 0,005 0,005 0,007 0,007 0,007 0,007
Standby heat loss Pstby (kw) 0,086 0,075 0,079 0,079 0,100 0,141

8
Product description
Dimensions of ATAG XL W single engine
Type ATAG XL W 75 105
A Boiler height mm 1050 1050
A1 %RLOHUKHLJKWZLWKÀXHFRQQHFWLRQ mm 1135 1135
B Boiler width mm 530 530
C1/
C2 Boiler depth mm 595 675
D Flue gas nozzle parallel mm 185 185
E Air intake parallel mm 345 345
F Flue gas nozzle mm 150 150
G Boiler return connection mm 103 103
H%RLOHUÀRZFRQQHFWLRQ mm 243 243
I Condensate connection mm 345 345
J Gas connection mm 430 430
K Condensate connection mm 60 60
L%RLOHUUHWXUQÀRZJDV mm 75 75
M%RLOHUUHWXUQÀRZJDV mm 25 25
Boiler connections
Type ATAG XL W 75 105
Flue gas nozzle concentric mm 100* 100*
Air supply connector concentric mm 150* 150*
Parallel connection mm 2x100 2x100
g Gas connection 1 1/4" 1 1/4"
Gas connection** 1" ** 1" **
c Condensate connection mm 35 35
a%RLOHUÀRZFRQQHFWLRQ 2" 2"
%RLOHUÀRZFRQQHFWLRQ 1 1/2" ** 1 1/2" **
r Boiler return connection 2" 2"
Boiler return connection** 1 1/2" ** 1 1/2" **
* with concentric adaptor (optional)
** with water/gas connection reduction kit (optional)
D
E
F
C1 / C2
B
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B
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Product description
Dimensions of ATAG XL W double engine
Type ATAG XL W 125-150 175-210
ABoiler height mm 1050 1050
A1 %RLOHUKHLJKWZLWKÀXHFRQQHFWLRQ mm 1135 1135
BBoiler width mm 690 690
C1/
C2 Boiler depth mm 595 675
DFlue gas nozzle parallel mm 185 185
EAir intake parallel mm 345 345
FFlue gas nozzle mm 150 150
GBoiler return connection mm 103 103
H%RLOHUÀRZFRQQHFWLRQ mm 243 243
ICondensate connection mm 345 345
JGas connection mm 430 430
KCondensate connection mm 60 60
L%RLOHUUHWXUQÀRZJDV mm 75 75
M%RLOHUUHWXUQÀRZJDV mm 25 25
Boiler connections
Type ATAG XL W 125-150 175-210
Flue gas nozzle concentric mm 100* -
Air supply connector concentric mm 150* -
Parallel connection mm 2x100 2x130
gGas connection 1 1/4" 1 1/4"
Gas connection** 1" ** 1" **
cCondensate connection mm 35 35
a%RLOHUÀRZFRQQHFWLRQ 2" 2"
%RLOHUÀRZFRQQHFWLRQ 1 1/2" ** 1 1/2" **
rBoiler return connection 2" 2"
Boiler return connection** 1 1/2" ** 1 1/2" **
* with concentric adaptor (optional)
** with water/gas connection reduction kit (optional)
D
E
F
C1 / C2
B
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10
Delivery scope
Standard version
Accessories and Cascade
Standard version
The delivery scope of a boiler consists of the following components:
Accessories
The following accessories can be
ordered:
- Flue gas pipes
 $LU¿OWHU
- Cascade hydraulics (see following
pages)
- Boiler frames (see following pages)
- diverter valve set
- Outdoor sensor, tank sensor
 7ÀRZVHQVRU
- Control for 3 extra heating zones
- Modbus/LON/BACKNET/KNX bus
interface
- Water/gas connection kit
 *DV¿OWHU
- Min gas pressure switch
- LPG conversion kit
- Plate heat exchanger kit
- Low loss header kit
Listed accessory parts have been
constructed or selected especially for
the ATAG XL W boiler, which
means they are very easy to install
(plug and play). You can compose your
own system solution, by selecting the
DFFHVVRU\FRPELQDWLRQWKDW¿WV\RXU
needs. For details and prices, please
contact ATAG.
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accessories that require an electrical
connection should be connected with
Master boiler (with the exception of
tank probe and Clip in, that can be
connected also to other boiler).
Cascade
In principle any combination is
possible. The selection can include
PRGHOVZLWKGLႇHUHQWRXWSXWVLIWKLV
meets the installation requirements.
Including boilers with common outputs
assists with sharing load and run times
of individual appliance.
7KHFDSDFLW\RIWKHÀRZDQGUHWXUQ
header, gas line and low loss header
are adjusted to the selected overall
demand.
When installing a single ATAG XL W
boiler the use of a low loss header is
strongly recommended.
When installing cascaded ATAG
XL W boilers: the use of a low loss
header adjusted to the set demand
is mandatory; the realization of an
additional bypass is not allowed;
ÀRZDQGUHWXUQKHDGHUVKRXOGEH
realized in a the dimension of DN65
or DN100 (according to cascade
output). ATAG supplies low loss
KHDGHUYHUVLRQVZKLFKDUHVXLWDEOH
IRUDPD[LPXPGHPDQGRIN:
Components Packaging type
Completely assembled and tested boiler 1 In cardboard box
Mounting rail 1 In boiler packaging
Installation manual ATAG XL W 1
In document bag in boiler packagingERP label (only ATAG XL75W) 1
condense pipe 1

11
Product description
ATAG XL W Cascade
Legend:
1. Air supply
2. Flue/Air supply
3. Cascade manager
Accessories:
4. Gas isolation valve
5. Flow and return isolation valves
6. Non-return valve
7. Flow/return header
8. Gas line
9. Low loss header
10. Safety valve 3 or 6 bar
11. Drain valve
12. Automatic air vent low loss header
13. Pocket for temperature sensor T10
14. Frame
Cascade possibilities
The ATAG XL W cascade can be
mounted in 3 ways:
- Wall-mounted in line
All boilers alongside one another
on the wall
- Free-standing in line
All boilers hanging alongside one
another on a free-standing frame
- Free-standing back-to-back
All boilers hanging back-to-back
on a free-standing frame
For more information see next pages.
5 4 7 89
6
123
11
1213
14
2130
1430
10

12
Product description
$7$*;/:&DVFDGHH[DPSOHVZDOOPRXQWHG
660
2130
660
3530
660
6520
460
1070
1715
660
1430 540
ATAG XL W 2 boilers wall-mounted in line ATAG XL W 3 boilers wall-mounted in line
ATAG XL W 5 boilers wall-mounted in line
ATAG XL W 8 boilers wall-mounted in line

13
660
2130
660
3530
660
6520
460
1070
1715
660
1430 540
ATAG XL W 2 boilers free-standing in line ATAG XL W 3 boilers free-standing in line
ATAG XL W 5 boilers free-standing in line
ATAG XL W 8 boilers free-standing in line
Product description
$7$*;/:&DVFDGHH[DPSOHVIUHHVWDQGLQJLQOLQH

14
Product description
$7$*;/:&DVFDGHH[DPSOHVIUHHVWDQGLQJEDFNWREDFN
660
1430
660
2130
660
3880
ATAG XL W 3 boilers free-standing back-to-back ATAG XL W 4 boilers free-standing back-
to-back
ATAG XL W 6 boilers free-standing back-to-back
ATAG XL W 8 boilers free-standing back-to-back
460
1070
1715
660
1430 1000

15
Product description
ATAG XL W Cascade accessories
FG codes Description Single Boiler Cascade
WH
in line
Cascade
WH
B2B
Power
size
75 105 150 180 210
3905101 MIN. GAS PRESSURE SWITCH - BOILER x x x x x x
3905102 MIN. GAS PRESSURE SWITCH - CASCADE x x 0-1600
3905103 ROOM FAN + EXT. GAS VALVE x x x x x x
3905104 GAS FILTER 70-100-140 x x x x
3905105 GAS FILTER 170-200 x x x
3905108 TAE/TAS GAS VALVE kit BOILER CH x
3905109 TAE/TAS GAS VALVE kit BOILER DHW x
3905107 TAE/TAS GAS VALVE CONNECTION KIT WH CH FRONT x 0-1600
3905110 TAE/TAS GAS VALVE CONNECTION KIT WH CH BACK x 0-1600
3905111 TAE/TAS GAS VALVE CONNECTION KIT WH DHW x 0-1600
3905115 AIR FILTER Ø100 x x x x
3905116 AIR FILTER Ø130 x x x
3905117 WATER-GAS CONNECTION KIT x x x x x x
3905118 LPG kit 70 x x x x
3905119 LPG kit 100 x x x x
3905120 REMOCON MODBUS-LON x x x x x x x x 0-1600
3905121 REMOCON MODBUS-BACNET x x x x x x x x 0-1600
3905122 REMOCON MODBUS x x x x x x x x 0-1600
3905123 REMOCON MODBUS-KNX x x x x x x x x 0-1600
3905124 CLIP IN ZONE MANAGER x x x x x x x x 0-1600
3905045 Low loss header-DHW sensor x x x x x x x x 0-1600
3905127 Outdoor sensor x x x x x x x x 0-1600
3905128 Zone sensor x x x x x x x x 0-1600
3905129 COLLECTOR FLOW/RETURN DN65 2B LINE / 4B B2B x x 0-465
3905130 COLLECTOR FLOW/RETURN DN65 3B LINE / 6B B2B x x 0-465
3905131 GAS PIPE DN65 DUO x x 0-1600
3905132 COLLECTOR FLOW/RETURN DN100 2B LINE / 4B B2B x x 0-1600
3905134 COLLECTOR FLOW/RETURN DN100 3B LINE / 6B B2B x x 0-1600
3905136 INSULATION COLLECTOR DN65/DN100 (L=1B) x x 0-1600
3905137 CASCADE DEAREATOR x x 0-1600
3905138 GAS FILTER DN65 x x 0-1600
3905026 FLANGE KIT DN65 WATER x x 0-465
3905027 FLANGE KIT DN100 WATER x x 0-1600
3905029 FLANGE KIT DN65 GAS x x 0-1600
3905125 ZHOGLQJÀDQJH'1ZDWHU'1JDV x x 0-465
3905038 LASFLENS SET DN100 A/R + GAS DN 65 x x 0-1600
3905126 ZHOGLQJÀDQJH'1ZDWHU'1JDV x x 0-1600
3905142 FRAME FOOT L-SHAPE x 0-1600
3905143 FRAME FOOT I SHAPE x 0-1600
3905144 UPPER HORIZONTAL - LOWER SPACER SUPPORT 2B x x 0-1600
3905147 UPPER HORIZONTAL - LOWER SPACER SUPPORT 3B x x 0-1600
3905148 MOUNTING BRACKET 2B x x 0-1600
3905149 MOUNTING BRACKET 3B x x 0-1600
3905167 INSULATION CONN KIT WALL HUNG x x 0-1600
3905173 BOILER Low loss header dT10-20K x x x x x x
3905175 Insulation BOILER Low loss header dT10-20K x x x x x x
3905033 Low loss header DN65 x x 0-465
3905034 Low loss header DN100 x x 0-960
3905035 Bend 90° DN65 x x 0-465
3905041 Bend 90° DN65 insulation x x 0-465
3905036 Bend 90° DN100 x x 0-1600
3905174 Insulation Bend 90° DN100 x x 0-1600
3905176 Low loss header DN100 DUO kit x x 960-1600
3905040 Insulation LLH header DN65 x x 0-465
3905177 Insulation LLH header DN100 x x 0-960
3905186 BOILER SE Plate HEAT EXCH. dT10K x x x
3905187 BOILER DE Plate HEAT EXCH. dT10K x x x x
3905188 BOILER SE Plate HEAT EXCH. dT15K x x x
3905189 BOILER DE Plate HEAT EXCH. dT15K x x x x
3905190 BOILER SE Plate HEAT EXCH. dT20K x x x
3905191 BOILER DE Plate HEAT EXCH. dT20K x x x x

16
Product description
ATAG XL W Cascade accessories
FG codes Description Single Boiler Cascade
WH
in line
Cascade
WH
B2B
Power
size
75 105 150 180 210
3905192 BOILER Connection kit Plate heat exch. x x x x x x
3905193 BOILER Expansion vessel kit x x x x x x
3905194 CASCADE Plate HEAT EXCH. dT10K x x x x x x x
3905195 CASCADE Plate HEAT EXCH. dT15K x x x x x x x
3905196 CASCADE Plate HEAT EXCH. dT20K x x x x x x x
3905197 CASCADE PHE Connection kit x x 0-1600
3905265 CASCADE PHE Connection kit DN100 x x 0-1600
3905198 CASCADE FLUE KIT DN150 LINE x x x x x x x
3905199 FLUE SIPHON SET DN150 x x x x x x x
3905200 CASCADE FLUE KIT DN200 LINE x x x x x x x
3905201 FLUE SIPHON SET DN200 x x x x x x x
3905202 CASCADE FLUE KIT DN150 B2B x x x x x x x
3905203 CASCADE FLUE KIT DN200 B2B x x x x x x x
3905204 FLUE PIPE PP 100MM L=0.5M x x x x
3905205 FLUE PIPE PP 100MM L=1.0M x x x x
3905206 FLUE BEND PP 90 DEGR 100MM x x x x
3905207 FLUE BEND PP 45 DEGR 100MM x x x x
3905208 FLUE SUPPORT ELBOW PP 90 DEGR 100MM x x x x
3905209 FLUE T-PIECE PP 100MM + COVER x x x x
3905210 FLUE SIPHON SET DN100 x x x x
3905211 FLUE EXPANDER PP 100-150MM x x x x x x
3905212 FLUE CHIMNEY CAP + AIR VENT 100MM x x x x
3905213 FLUE WALL BRACKET 100MM x x x x
3905214 FLUE WALL PLATE 100MM x x x x
3905215 FLUE VENTILATION GRATE 100MM-200MM x x x x
3905216 FLUE PIPE PP 150MM L=0.5M x x x x x x x
3905217 FLUE PIPE PP 150MM L=1.0M x x x x x x x
3905218 FLUE BEND PP 90 DEGR 150MM x x x x x x x
3905219 FLUE BEND PP 45 DEGR 150MM x x x x x x x
3905220 FLUE BEND PP 15 DEGR 150MM x x x x x x x
3905221 FLUE EXPANDER PP 100-200MM x x x x x
3905222 FLUE EXPANDER PP 150-200MM x x x x x x x
3905223 FLUE T-PIECE PP 150MM + COVER x x x x x x x
3905224 FLUE WALL BRACKET 150MM x x x x x x x
3905225 FLUE WALL PLATE 150MM x x x x x x x
3905226 FLUE SUPPORT ELBOW PP 90 DEGR 150MM x x x x x x x
3905227 FLUE SUPPORT STRIP x x x x x x x
3905228 FLUE SPACER BRACKET 150MM 2PCS x x x x x x x
3905229 FLUE CHIMNEY CAP + AIR VENT 150MM x x x x x x x
3905230 FLUE CHIMNEY CAP EXT. 150MM x x x x x x x
3905231 FLUE ROOF TERMINAL PP 150MM x x x x x x x
3905232 WEATHER SLATE FLAT ROOF 150MM x x x x x x x
3905233 FLUE PIPE PP 200MM L=0.5M x x x x x x x
3905234 FLUE PIPE PP 200MM L=1.0M x x x x x x x
3905235 FLUE BEND PP 90 DEGR 200MM x x x x x x x
3905236 FLUE BEND PP 45 DEGR 200MM x x x x x x x
3905237 FLUE BEND PP 15 DEGR 200MM x x x x x x x
3905238 FLUE T-PIECE PP 200MM + COVER x x x x x x x
3905239 FLUE WALL BRACKET 200MM x x x x x x x
3905240 FLUE WALL PLATE 200MM x x x x x x x
3905241 FLUE SUPPORT ELBOW PP 90 DEGR 200MM x x x x x x x
3905242 FLUE SPACER BRACKET 200MM 2PCS x x x x x x x
3905243 FLUE CHIMNEY CAP + AIR VENT 200MM x x x x x x x
3905244 FLUE CHIMNEY CAP EXT. 200MM x x x x x x x
3905245 FLUE ROOF TERMINAL PP 200MM x x x x x x x
3905246 WEATHER SLATE FLAT ROOF 200MM x x x x x x x
3905247 FLUE ROOF TERMINAL CONC. PP 100/150MM x x x x
3905248 FLUE PIPE PP CONC 100/150MM L=0.5M x x x x
3905249 FLUE PIPE PP CONC 100/150MM L=1.0M x x x x
3905250 FLUE BEND PP 90 DEGR CONC 100/150MM x x x x
3905251 FLUE BEND PP 45 DEGR CONC 100/150MM x x x x
3905252 FLUE SUPPORT ELBOW PP 90 DEGR CONC 100/150MM x x x x

17
Product description
ATAG XL W Cascade accessories
FG codes Description Single Boiler Cascade
WH
in line
Cascade
WH
B2B
Power
size
75 105 150 180 210
3905252 FLUE SUPPORT ELBOW PP 90 DEGR CONC 100/150MM x x x x
3905253 FLUE T-PIECE PP CONC 100/150MM + COVER x x x x
3905254 FLUE SIPHON SET CONC 100/150MM x x x x
3905255 FLUE CHIMNEY CAP + AIR VENT CONC 100/150MM x x x x
3905256 FLUE WALL BRACKET CONC 100/150MM x x x x
3905257 FLUE WALL PLATE CONC 100/150MM x x x x
3905259 FLUE WALL TERMINAL PP CONC 100/150MM x x x x
3905260 FLUE ADAPTER PAR - CONC 100/100-100/150 x x x x
3905261 ADAPTOR Ø100-110 FLUE/AIR x x x x
3905262 FLUE EXPANDER 130-150MM x x x x x
3905263 FLUE EXPANDER 130-200MM x x x x x
3905264 FLUE REDUCER 130-100MM x x x

18
Installation
Boiler transport
1. Remove the plastic strip.
2. Open the 4 upper folders, and remove the documentation
and the condense pipe.
3. Remove the cartboard inserts, remove the cartboard box.
4. Remove the wall plate from the back of the boiler (removing one screw),
and remove the 4 screws on bottom part of the boiler.
5. Install the boiler on the cascade (with a fork lifter).
6. Install the boiler on the new wall plate (with a fork lifter).
7. Remove the water and gas plastic cap, connect the condense pipe,
and follow the installation manual.
The ATAG XL W is a fully equipped
compact heating system, which has
been pre-set and tested at the factory.
The dimensions of the packaging are: -
65, 75, 105, 125, 150, 180, 210: 800 x
1200 x 750 mm (WxHxD).
This makes it possible to transport
all models in one piece through a
normal door.
The boiler can be picked up or from the
front with a forklift truck for transport.
Unpacking instructions are printed on
the cardboard box. Please follow the
proposed steps.
Disassembly of panelling
The panelling of the boiler can be
set aside, until the boiler is taken into
operation, so as to avoid damage.
Lifting and carrying precautions:
- Wear protective clothing and gloves
to protect from any sharp edges.
- The boiler has to be lifted from the
front with a forklift truck for transport.
Panelling should be attached and
VHFXUHGZLWKWKHVXSSOLHGVFUHZ
DIWHUDVVHPEO\RIWKHERLOHURUDIWHU
maintenance works.
1
4x4x
4
2
7
5
A
B
3
A
B
C
6
A
B

19
Ceiling
Individual flue:
min. 500mm
Collective flue:
dependant on
the selected
flue system.
Please contact
the supplier
Installation
Installation Connections
The installation location of the
CH-boiler(s) has to be, and remain,
frost-free.
It is NOT necessary to have a purpose
provided air vent providing a twin pipe
RUFRQFHQWULFURRPVHDOHGÀXHV\VWHP
is used in the room or internal space in
which the boiler is installed. Neither is it
necessary to ventilate the compartment
in which the boiler is installed, due to
the extremely low surface temperature
of the boiler casing during operation.
7KHÀRRUDVWREHÀDWDQGOHYHODQG
KDYHVXႈFLHQWGHDGZHLJKWFDSDFLW\IRU
WKHFRPSOHWH¿OOHGLQVWDOODWLRQ
The ATAG XL W cascade
can be mounted in 3 ways:
- Wall-mounted in line
All boilers alongside one another
on the wall. Refer to page 12.
10 m
m
1000 mm
1000 mm
10 mm
1. Boiler return connection
 %RLOHUÀRZFRQQHFWLRQ
3. Condensate drain
4. Gas
5. Flue gas outlet
- Free-standing in line
All boilers hanging alongside one
another on a free-standing frame.
Refer to page 13.
-Free-standing back-to-back.
All boilers hanging back-to-back
on a free-standing frame.
Refer to page 14.
General guidelines:
Pay attention to the minimum
distance required between the
ERLOHUVZDOOVDQGFHLOLQJIRU
installing and removing the housing
(refer to above) for commissioning
DQGVHUYLFLQJDQGLQVWDOOLQJWKHÀXH
system (refer to chapter 7).
If you have opted to build the hydraulic
part yourself, then ATAG recommends
using “Connection set ATAG XL W as
single boiler” for each boiler.
4321
56

20
Installation
Hydraulics Circulation pumps
Pump head diagram, boiler type 75 Pump head diagram, boiler type 125 – 150
Pump head diagram, boiler type 105 Pump head diagram, boiler type 180 – 210
Boiler type Pump type Circulating water volume
(m3/h - l/min)
Residual head
(mH2O - mbar - kPa)
ǻ7. ǻ7. ǻ7. ǻ7.
XL75W 1 x WILO PARA 8 2,81 - 46,8 2,25 - 37,5 1,5 - 148 - 14,8 3,8 - 373 - 37,3
XL105W 1 x WILO PARA 9 3,90 - 65,0 3,12 - 51,9 0,0 - 0 - 0,0 1,7 - 167 - 16,7
XL125W 2 x WILO PARA 8 4,76 - 79,3 3,81 - 63,5 2,7 - 262 - 26,2 4,8 - 475 - 47,5
XL150W 2 x WILO PARA 8 5,62 - 93,7 4,50 - 74,9 0,7 - 65 - 6,5 3,3 - 321 - 32,1
XL180W 2 x WILO PARA 9 6,70 - 111,7 5,36 - 89,4 0,8 - 80 - 8,0 3,5 - 344 - 34,4
XL210W 2 x WILO PARA 9 7,79 - 129,8 6,23 - 103,8 0,0 - 0 - 0,0 1,6 - 157 - 15,7
For single boiler installation the connection to a low velocity header and secondary circuit pump is strongly
recommended.
For installation of cascaded boilers the connection to a low velocity header and secondary circuit pump is
mandatory.
7HPSGLႇHUHQWLDOQRPLQDO
The WILO PARA 8 or 9 circulation pump, which is installed at the factory in the boiler, operates continuously and adapts its
SXPSVSHHGWRKHDWUHTXLUHPHQWVǻ7
The boiler electronics continues to control the boiler’s output such that the boiler temperature setpoint is maintained.
3XPSVSHHGFRQWUROFRQWUROVWKHERLOHUSXPS¶VVSHHGLQDZD\WKDWWKHSDUDPHWHUL]HGQRPLQDOWHPSHUDWXUHGLႇHUHQWLDORI
ERLOHUUHWXUQDQGERLOHUÀRZLVPDLQWDLQHG
,IWKHHႇHFWLYHGLႇHUHQWLDOLVJUHDWHUWKDQWKHQRPLQDOGLႇHUHQWLDOWKHSXPS¶VVSHHGLVLQFUHDVHGRWKHUZLVHLWLVGHFUHDVHG