COMPANO XR+ User manual

EN - v2.10 / 10-2023
Installation manual
Air heater
Type XR+

Contents
1. Introduction 3
1.1. Symbols used in this manual 3
1.2. Warranty 3
2. Safety instructions 4
2.1. Installation 4
2.2. Use 4
2.3. Maintenance & Cleaning 4
2.4. Children and vulnerable users 4
3. Technical specifications 5
3.1. Performance 5
3.2. Gas types 6
3.3. Dimensions 7
4. Installation 8
4.1. Preparation 8
4.2. Positioning the air heater 8
4.3. Gas type & connection 10
4.4. Electrical connection 10
4.5. Room thermostat 10
5. Flue systems 12
5.1. Flue terminals 12
5.2. Flue length (max.) 13
5.3. Condensate in the flue system 14
5.4. Installation of the flue terminal 15
6. Operating the air heater 18
6.1. Burner cycle 18
6.2. Minimum firing time 18
6.3. Delta-T-regulation 18
6.4. Summer ventilation 18
6.5. Overheating protection 19
6.6. Flue passage check 19
7. Commissioning the air heater 19
7.1. Adjusting the settings 19
7.2. Commissioning the air heater 19
8. Combustion settings 21
8.1. Adjusting the burner settings 21
8.2. Converting to another gas type 22
9. Troubleshooting 22
9.1. Volatile lock outs 22
9.2. Temporary errors 23
9.3. Warnings 23
9.4. Instructions 23
9.5. Further troubleshooting 25
10. Maintenance 25
10.1. Preparation 25
10.2. Basic maintenance 25
10.3. Maintenance of the burner unit 26
10.4. Maintenance in dusty environments 26
11. Electrical wiring diagram 27
12. Exploded view and spare parts 31
13. Disposal and recycling 33
14. Declaration of conformity 33

3INSTALLATION MANUAL AIR HEATER TYPE XR+
1. Introduction
This manual is intended for the gas, electrical and
mechanical installer.
This document gives instructions on how to use and
maintain the air heater. It is most important to follow the
instructions in this document for safe operation of this air
heater.
It is important to read this document before starting the
installation process. Store this document close to the air
heater for quick reference.
1.1. Symbols used in this manual
DANGER! Indicates a dangerous situation that would lead
to death or severe injury.
WARNING! Indicates a potentially dangerous situation
that could lead to death, severe injury or serious product
damage.
CAUTION! Indicates a potentially dangerous situation
that could lead to injury or product damage.
NOTICE Indicates important information that is not
directly related to safety.
1.2. Warranty
NOTICE Using, installing or maintaining this air heater in
any other way than described in this manual may cause
damage that voids the warranty.
NOTICE Failing to follow the safety instructions in this
manual can lead to damage to the air heater or the
installation and void the warranty.

4
2. Safety instructions
Always follow the safety instructions in this chapter when
installing, using or performing maintenance on this air
heater:
2.1. Installation
CAUTION! This air heater must be installed and
maintained by an authorized, qualified and competent
installer, using calibrated equipment.
NOTICE This air heater must be installed and maintained
in accordance with this manual, national and local building
regulations and local health and safety regulations.
2.1.1. Protection against dust
CAUTION! Do not use the air heater in a very dusty
environment. Dust may accumulate and cause a defect of
the heater. This is also the case for the room thermostat.
2.1.2. Temperature
CAUTION! Do not install the heater in places where the
temperature can rise above 35°C. Higher temperatures
cause the internal components to degrade much faster.
NOTICE Air heaters installed in very cold environments
may form condensate in the flue system. Make sure a
condensate discharge is installed.
2.1.3. Corrosive vapours
WARNING! Do not install the air heater in areas that
contain any corrosive or explosive vapours. Corrosive
vapours (e.g. containing Chlorine) that are sucked into the
air intake will cause corrosion of the heat exchanger and a
leakage of condensate and flue gas. This is also the case
for the room thermostat.
2.1.4. Protection against water
WARNING! Never use water when cleaning electrical
parts.
This air heater is not waterproof and has an IP00B
classification.
WARNING! Do not expose the air heater to rain, spray or
dripping water.
2.2. Use
CAUTION! Make sure the area around the air heater is
dry when performing maintenance on the air heater.
CAUTION! Always close the doors and inspection hatches
of the air heater, except when adjusting and checking the
appliance.
2.3. Maintenance & Cleaning
Frequent maintenance and cleaning of the air heater is
necessary to ensure safe and proper operation. Failure
to do so could lead to damage to the heater or its
surroundings and void the warranty.
2.3.1. Protection from water (IP class)
WARNING! Never use water when cleaning electrical
parts.
This air heater is not waterproof and has an IP20B
classification.
WARNING! Do not expose the air heater to rain, spray or
dripping water.
2.4. Children and vulnerable users
WARNING! This air heater can be used by children aged
8 years and above and by persons with reduced physical,
sensory or mental capabilities or lack of experience and
knowledge, if they are supervised or instructed concerning
use of the appliance in a safe way and understand the
hazards involved.
WARNING! Children shall not play with the air heater.
WARNING! Children shall not clean and maintain this air
heater without supervision.

5INSTALLATION MANUAL AIR HEATER TYPE XR+
3. Technical specifications
3.1. Performance
Technical specification Unit Type XR+ 5.1 (ERP2021)
XR10+ XR20+ XR30+ XR40+ XR50+ XR60+ XR80+ XR100+ XR120+
Net nominal heat input (max.) kW 14.0 22.8 32.0 44.0 55.0 66.0 72.0 91.0 111.0
Net nominal heat input (min.) kW 8.5 13.5 18.0 26.4 33.0 39.6 48.0 60.0 72.0
Heat output (max.) kW 12.5 20.7 28.9 41.1 50.7 61.2 68.6 86.9 105.6
Heat output (min.) kW 8.0 12.8 17.0 25.3 31.5 37.9 46.0 57.6 69.4
Eciency at max. power % 90.4 90.6 90.4 93.5 92.2 92.7 95.3 95.5 95.1
Eciency at min. power % 93.8 94.6 94.6 95.8 95.6 95.6 95.9 96.0 96.4
Air output (max.) m3/h 2750 4000 4200 5400 8000 8000 10200 10700 13000
Throw horizontal (max.) m 22 30 31 32 46 30 38 40 43
Throw vertical (max. warm) m 5 7 7 8 11 8 - - -
Gas connection G” 1/2" F 1/2" F 1/2" F 3/4" M 3/4" M 3/4" M 1" F bi 1" F bi 1" F bi
Electrical connection (50 Hz) V 230 230 230 230 230 230 230 230 230
Electrical power consumption
(max.)
kW 0.200 0.300 0.300 0.325 0.750 0.750 0.730 0.760 1.210
Electrical power consumption
(min.)
kW 0.165 0.270 0.270 0.250 0.600 0.600 0.560 0.340 0.870
Electrical power consumption
EC version (max.)
kW 0.160 0.175 0.175 0.260 0.475 0.475 0.77 0.63 1.08
Electrical power consumption
EC version (min.)
kW 0.044 0.046 0.046 0.060 0.100 0.100 0.45 0.34 0.75
Stand-by electrical power
consumption
kW 0.004 0.004 0.004 0.004 0.004 0.004 0.006 0.006 0.006
Electrical current (max.) A 0.9 1.4 1.4 1.5 3.5 3.5 3.3 3.5 5.5
Electrical current EC version
(max.)
A 1.3 1.6 1.6 1.2 2.3 2.3 3.5 4.8 4.9
Protection class - IP20B
Emission eciency (ηs, flow) % 96.8 96.3 95.1 94.2 94.9 94.0 93.9 93.5 93.0
Seasonal space heating
eciency
% 78.3 78.1 78.4 78.3 78.8 78.3 78.2 77.9 78.0
NOx emission (GCV) mg/
kWh
48 48 45 39 49 45 51 43 60
NOx class - 5 5 5 5 5 5 5 5 5
Flue gas amount (max.) kg/h 21.7 35.5 51.3 70.6 88.2 105.8 115.4 145.9 177.9
Thermostat communication
bus system (low voltage)
- 2-wire low voltage communication bus
Chimney flue pressure (max.) Pa 90 90 90 120 120 120 150 150 150
Sound level high (at 5 m) dBA 56.5 58 59 59 64 64 62 62 62
Sound level low (at 5 m) dBA 54 56.5 56 54.5 58 58 58 58 58
Min. suspension height
(vertical throw)
m444566- - -
Flue length horizontal throw See §5.2
Flue length vertical throw
Weight kg 46 50 53 78 86 82 185 195 215

6
3.2. Gas types
3.2.1. Natural gas G20
Specification Unit Natural gas G20
Nominal supply pressure mbar 20
Supply pressure (min. - max.) mbar 17-25
Gas category - I2H
Class - B23, C13, C33
Specification Unit XR10+ XR20+ XR30+ XR40+ XR50+ XR60+ XR80+ XR100+ XR120+
Gas consumption (max.) m3/h 1.5 2.4 3.4 4.7 5.8 7.0 7.6 9.6 11.7
CO2High % 9.1 9.0 9.0 9.0 9.0 9.0 9.1 9.1 9.1
CO2Low % 8.5 8.5 8.5 8.5 8.6 8.6 9.0 8.9 9.1
CO2low service mode % 8.5 8.5 8.5 8.5 8.6 8.6 8.5 8.5 8.5
O2High % 4.7 4.8 4.8 4.8 4.8 4.8 4.7 4.7 4.7
O2Low % 5.8 5.8 5.8 5.8 5.6 5.6 4.9 5.0 4.7
O2low service mode % 5.8 5.8 5.8 5.8 5.6 5.6 5.8 5.8 5.8
3.2.2. Propane G31
Specification Unit Propane
Nominal supply pressure mbar 30-50
Supply pressure (min. - max.) mbar 25-50
Gas category - I3P
Class - B23, C13, C33
Specification Unit XR10+ XR20+ XR30+ XR40+ XR50+ XR60+ XR80+ XR100+ XR120+
Gas consumption (max.) kg/h 1.1 1.8 2.5 3.5 4.4 5.3 5.8 7.3 8.9
CO2High % 11.0 10.8 10.8 10.8 10.8 10.6 11.0 11.0 11.1
CO2Low % 10.5 10.5 10.5 10.5 10.3 10.3 10.8 10.7 11.0
CO2low service mode % 10.5 10.5 10.5 10.5 10.3 10.3 10.5 10.5 10.5
O2High % 4.2 4.5 4.5 4.5 4.5 5.0 4.2 4.2 4.1
O2Low % 4.9 4.9 4.9 4.9 5.2 5.2 4.5 4.7 4.2
O2low service mode % 4.9 4.9 4.9 4.9 5.2 5.2 4.9 4.9 4.9

7INSTALLATION MANUAL AIR HEATER TYPE XR+
3.3. Dimensions
The dimensions of this air heater can be found in figures 1 through 4.
260
85
120
65
90
755
650
495
M10
M10
615
530
280
410
470
325
130
Figure 1 - Dimensions of the XR10+ - XR30+
M10
M10
545
400
175
470
650
325
145
795
670
120
380
110
105
110
Figure 2 - Dimensions of the XR40+ - XR60+
Figure 3 - Dimensions of the XR80+ - XR100+
Figure 4 - Dimensions of the XR120+

8
4. Installation
4.1. Preparation
Before installation, please use the data badge to check:
• if the heater is in accordance with the order;
• if the heater is suitable for the local present
provisions (gas type, gas pressure, electrical supply
etc.)
Before leaving the factory, the air heater has been tested
for safety and has been set to the operating settings. It has
been configured for the type of gas that is stated on the
data badge. Should there be any doubt about the settings
that apply to your situation, please contact your supplier.
4.1.1. Standards
NOTICE The installation must comply with all applicable
local and national standards.
NOTICE The air heater must be installed in accordance
with the relevant requirements of the Gas Safety
regulations, Electrical installation regulations and or other
local regulations that may apply.
For United Kingdom only:
NOTICE The air heater must be installed in accordance
with the relevant requirements of the Gas Safety
regulations, Electrical installation regulations and or other
local regulations that may apply (e.g. The Institute of Gas
Engineers IGE UP-1 and 2, BS6230, BS5440 building
regulations and the IIE regulations that incorporate the gas
safety regulations).
4.2. Positioning the air heater
Keep the following requirements in mind when choosing a
location to install your air heater:
WARNING! Never install an air heater close to flammable
materials.
• Keep sucient distance between the heater and
any obstructions. This is both for safety reasons
and to allow access for service and maintenance
(figure 5).
• Make sure the air flow to and from the heater is
free from obstacles at least 5 metres in front of the
heater. Also make sure the air intake is free from
obstacles.
• Make sure enough space remains to open the door
of the air heater.
• Make sure the wall can support the air heater.
• Ensure sucient clearance distance for the flue
system.
0,2m
0,2m
0,3
Figure 5 - Minimum clearances around the air heater
4.2.1. Orientation
• When the heater is not installed horizontally, re-
adjust the CO2setting from the gas valve.
• If the air heater is installed with the air stream
vertically downwards, maintain a maximum
suspension height of 8 meters to ensure that warm
air will reach the floor.
4.2.2. Suspension
Depending on the model of your air heater, five types of
wall support can be used:
Model(s) Wall support Art. Nr.
XR10+ - XR30+ Standard GA8610
XR40+ - XR60+ Standard GA8620
XR80+ - XR120+ Standard GA8622
XR10+ - XR30+ Turnable* GA8630

9INSTALLATION MANUAL AIR HEATER TYPE XR+
Figure 6 - Wall support (standard)
Dimension XR10+ - XR30+ XR40+ - XR60+
A (mm) 550 665
B (mm) 640 815
C (mm) 830 990
D (mm) 540 720
Figure 7 - Wall support (turnable)
*can be rotated horizontally or forward.
Model(s) Wall support Art. Nr.
XR10+ - XR60+ Vertical suspension kit GA8645
Figure 8 - Vertical suspension kit
Dimension XR10+ - XR30+ XR40+ - XR60+
A (mm) 540 720
Figure 9 - Suspension adapter GA8622

10
4.3. Gas type & connection
The unit is suited for the use of natural gas or propane gas.
The specific gas type that a heater is set up for can be
found on the packaging labels and on the heater badge.
The heater can be converted to another gas type. Contact
your supplier for more information.
The working and standing supply pressure must be
a minimum of 17 mbar, and a maximum of 50 mbar,
measured at the inlet pressure nipple of the gas control in
the heater.
NOTICE The supply line’s manual isolation valve must be
placed within reach of the heater.
NOTICE All gas supply lines must be mounted without any
mechanical tension.
NOTICE Always clean the inside of a gas supply line
before connecting it to the air heater. Place a gas filter in
the supply line when needed.
CAUTION! When using pressures above 60 mbar to test
the supply lines, always close the manual isolation valve of
the air heater.
For United Kingdom only:
The supply line for gas must comply with the Gas
Engineers publications UP-1 and UP-2, as well as with BS
6891.
4.4. Electrical connection
The electrical installation must comply with local and
national requirements as well as IEE regulations.
4.4.1. Power supply
The air heater requires an earthed power supply of 230 V/
AC 50 Hz. The control circuit is a two wire low voltage bus
communication.
Figure 10 - The air heater's connection clamps
• Connect the wires of the mains cable to the clamps
in the connection box (figure 10).
• The heater must be electrically isolated during
servicing. Use an isolation switch (min. 3 mm
contact opening gap), a power plug or a non-
switched fuse spur. See the electrical wiring
diagram in §11..
WARNING! Never use a room thermostat to interrupt the
electric power supply to the heater.
4.4.2. Fuse
One fuse is present on the air heater’s control board (see
the electrical wiring diagram in §11.).
• When replacing this fuse, always use one of the
same type (5AT).
4.5. Room thermostat
The air heater can be controlled in the following ways:
• The MTS: a modulating digital thermostat.
• The MTC: a modulating digital clock thermostat
with optimiser.
• Interface module; a specially designed interface
module for BMS systems. Contact your supplier for
more information.
• 0 - 10 V control (optional), see §4.5.4.;
• modbus control (optional), see §4.5.5..
WARNING! Never use a room thermostat to interrupt the
electric power supply to the heater.
NOTICE This air heater must not be controlled with a
simple ON/OFF thermostat due to ERP requirements.
4.5.1. Installation requirements
Following these requirements when placing the thermostat
to ensure the heater functions correctly:
• Make sure that air can circulate around the
thermostat.
• Make sure the sun does not shine directly upon the
thermostat.
• Do not place the thermostat on a cold wall.
• Place the thermostat on an inner wall free from
draught.
• Never place the thermostat within the throw of the
heater.
• Never mount the thermostat near the aerials of
internal communication networks. These emit
radiation that can disturb the thermostat. Keep
several meters distance.

11INSTALLATION MANUAL AIR HEATER TYPE XR+
In all cases, the communication between the heater
and the thermostat is based on a two wire, low-voltage
connection. (see the electrical wiring diagram in §11.).
Follow these instructions to prevent malfunction of the
installation and damage to the thermostat or air heater:
• Use a cable with the following specifications:
–Signal cable.
–Shielded and twisted.
–Minimum dimensions: 1 x 2 x Ø0.8 mm2.
–Maximum length: 200 m.
CAUTION! Keep the thermostat cable separated from the
mains cables.
CAUTION! Connect the cable’s earth shield only to the
earth terminal inside the air heater. Do not connect the
other end of the cable’s earth shield.
NOTICE A cable with a thickness of less than 0.8 mm will
result in a poor signal.
NOTICE A cable that is not shielded and twisted may
result in a disturbed communication in an EMC-unfriendly
environment.
4.5.2. Modulating room thermostat installation
To connect the air heater to an MTS or MTC thermostat, do
the following:
1. Connect the two control wires to terminals 4 and
5 (see figure 11 or the electrical wiring diagram in
§11.).
2. Set the S1 and J14 switches on the control unit as
follows (figure 12 / 13):
a. Set S1 to 1.
b. Set J14 to 1.
NOTICE The air heater must be switched o when setting
the switches. Otherwise the settings will have no eect.
Figure 11 - Modulating thermostat connection
1 2 3 4 5 6 7 8
ON
1 0
S1 J14
Figure 12 - Positions of the S1 and J14 switches
Figure 13 - Location of the S1 and J14 switches
4.5.3. Installation of multiple heaters on one control unit
An MTC or MTS room thermostat, or interface module can
control up to 8 air heaters. To connect the air heaters, do
the following (figure 14):
1. Connect the two wires of the thermostat to
terminals 4 and 5 of the first air heater.
2. Connect the first air heater to the second air heater.
3. Repeat for each subsequent air heater.
PE L5
4
N 5
45 45 4
22°C
L
N
PE L N
L
N
PE L N
L
N
PE L
N
L
N
123...8
22°C
L Neutal
4 5
L Neutal
4 5
L Neutal
4 5
1 2 3 4 5 6 7 8
ON
1 0
1 2 3 4 5 6 7 8
ON
1 0
S1 J14
1 2 3 4 5 6 7 8
ON
1 0
1
2
3
Figure 14 - Connection of multiple air heaters to a
modulating room thermostat
Each air heater needs an unique number to be recognised
by the room thermostat. This number can be set with the
J14 switch on the control unit of each air heater:
1. Set the S1 and J14 switches on the control unit as
follows (figure 15):
a. Set the S1 switch of the first air heater to 1.
b. Set the S1 switch of the other air heaters to 0.

12
c. Set the J14 switch of the first air heater to 1.
d. Set the J14 switch of the second air heater to
2, etc.
1 2 3 4 5 6 7 8
ON
10
1 2 3 4 5 6 7 8
ON
1 0
S1
J14
1 2 3 4 5 6 7 8
ON
10
Figure 15 - Positions of the S1 and J14 switches for the
first three air heaters in a system
NOTICE If the J14 switch of more than one air heater is
set to the same number, the system will not work.
NOTICE The air heater must be switched o when setting
the switches. Otherwise the settings will have no eect.
4.5.4. 0 - 10 V control (optional)
To control the air heater with a 0 - 10 V signal, install the
optional 0 - 10 V connection set GA5906.
4.5.5. Modbus control (optional)
To control the air heater with modbus, install the optional
modbus connection set GA5903.
5. Flue systems
To ensure safe and proper use, this air heater must be
connected to a flue system. This flue system must be
installed according to this manual as well as national and
local regulations. A flue system consists of a flue terminal,
piping and an optional condensate discharge system.
CAUTION! Do not use flue terminals for condensing
appliances on non-condensing heaters. This can lead to
water inside the flue system.
NOTICE Only use the prescribed flue material for the
roof terminal, wall terminal and for the piping between
the heater and the terminal. This is the only way the
installation will be approved.
NOTICE Local regulations can require the flue terminal to
be placed at least 0.6 m above roof level.
NOTICE Local regulations can require a minimum
distance between the flue terminal and air ventilation
openings on the building.
5.1. Flue terminals
The following flue terminals are compatible with this air
heater:
Model(s) Vertical discharge
Flue terminal Art. Nr.
XR10+ - XR60+ DDV 80/125 IA8202*
XR80+ - XR100+ DDV100/150 IA8101
XR120+ DDV130/200 IA8305
* For h > 0,5m above the roof, use art.nr. IA8218
Figure 16 - Vertical flue terminal XR+

13INSTALLATION MANUAL AIR HEATER TYPE XR+
Dimension XR10+
- XR30+
XR40+
- XR60+
XR80+
- XR100+
XR120+
A (mm) 1200 1200 1200 1850
B (mm) 400 400 500 955
d (Ø mm) 80 80 100 130
D (Ø mm) 125 125 150 200
HOH (mm) 110 110 140 225
Model(s) Horizontal discharge
Flue terminal Art. Nr.
XR10+ - XR60+ CT 80/125 IA8113
XR80+ - XR100+ CT100/150 IA8112
XR120+ CT130/200 IA8312
XR10+ - XR30+ 2-pipe terminal GA8201
Figure 17 - Horizontal flue terminal XR+
Dimension XR10+ - XR30+ XR40+ - XR60+
d (Ø mm) 80 100
D (Ø mm) 125 150
5.1.1. Flue material
Only use CE marked flue material from the manufacturers
Muelink & Grol (M&G) and Burgerhout.
Use type Alu-fix with a minimum temperature class of
T250 P1.
Use flue pipes with the same diameter as the flue spigots
on the heater.
Contact your supplier to purchase these flue materials.
NOTICE Dierent manufacturers use dierent
connections systems for flue pipes. Do not combine
systems from dierent manufacturers.
5.2. Flue length (max.)
The maximum straight length L (m) between the air heater
and its flue terminal for both orientations is:
Heater
orientation
Horizontal Horizontal Vertical
Flue outlet Horizontal
(wall)
Vertical (roof) Vertical (roof)
Figure Figure 18 Figure 19 Figure 20
XR10+ - XR30+ 6 6 2
XR40+ - XR60+ 8 8 2
XR80+ - XR120+ 9 9 -
Bends that are used in the connection between an air
heater and the flue terminal cause a decrease in pressure:
• Using a 90° bend decreases the maximum length
of the connection by 2 meters.
• Using a 45° bend decreases the maximum length
of the connection by 1 meter.
For further information regarding the flue system, please
contact your supplier.
L
Figure 18 - Flue length: horizontal heater orientation,
horizontal flue

14
L
Figure 19 - Flue length: horizontal heater orientation,
vertical flue
L
Figure 20 - Flue length: vertical heater orientation,
vertical flue
5.3. Condensate in the flue system
Condensate can form in the flue system when the air
heater is heating up. This condensate will evaporate if the
heater is operating for a longer period of time. The forming
of condensate depends on the following factors:
5.3.1. Air heater type
Condensate is especially likely to form in the smaller
heaters (< 25 kW).
Condensate will most likely not form in the larger heaters
(> 25 kW).
5.3.2. Air heater location
When an air heater burns frequently and is placed in
a normally heated room (temperature above 15 °C),
condensate is unlikely to form.
Air heaters placed in a room that needs to be just above 5
degrees will only burn for short periods at the time. Formed
condensate will not evaporate in these short burning
periods. The condensate will accumulate and eventually
result in pressure switch errors. To prevent this:
• Add a T-piece (figure 21).
or
• Add a condensate drain (figure 22).
5.3.3. Flue pipe length
When the flue pipe is long and runs through a cold space,
condensate can form. If the straight length of the flue pipe
is longer than 4 meters, the condensate will not evaporate
and accumulate in the heater. In this case. To prevent this:
• Insulate the flue pipes.
or
• Place a condensate trap (figure 21).
T-piece (6) Condensate
trap (7)
Condensate
drain
Ø80 art. IA8223 IA8225 IA8286

15INSTALLATION MANUAL AIR HEATER TYPE XR+
6
7
6
7
Figure 21 - A T-piece (6) and condensate trap (7)
Figure 22 - Condensate drain
5.4. Installation of the flue terminal
There are flue terminals available for installation through a
roof or through a wall.
NOTICE The flue terminal must be installed according to
local and national regulations.
NOTICE Do not combine components or materials from
dierent manufacturers.
5.4.1. Installation - Roof terminal
To install the flue terminal in the roof, do the following:
5.4.1.1. Preparation
1. Check all components for possible damage.
2. Determine the roofing type:
Flat roof
flashing Synthetic tile
Universal
pitched roof
flashing
Ø80 - 130 IA8121
IA8324 (5°
- 25°)
IA8124 (25°
- 45°)
Ø100 - 150 IA8321 IA8143 (25°
- 45°)
Ø130 - 210 IA8322 GA8334 IA8143 (25°
- 45°)
3. Determine where the flue terminal will be
positioned.
5.4.1.2. Installation
1. Create a hole from the outside of the roof.
CAUTION! Make sure no debris or dust gets into the air
heater.
2. Install the weather collar.
3. Carefully insert the flue terminal from the outside.

16
CAUTION! Do not rotate the cap.
4. Put the flue terminal into a vertical position. Use a
level.
5. OPTIONAL - If desired, fit cover plates. These are
supplied separately.
6. Place the supplied wall clamp around the flue
terminal and fit it to the roof construction. Do not
tighten the clamp yet.
7. Connect the gasket and the twin-tube connection.
Make sure that the gasket is not damaged.
NOTICE Make sure the flue tube and the air inlet tube are
not mixed up. The flue tube should be in the centre of the
flue terminal.
8. Tighten the roof wall clamp.
9. Check if all steps have been carried out correctly.
5.4.2. Installation - Wall terminal
To install the flue terminal in a wall, do the following:
5.4.2.1. Preparation
1. Check all components for possible damage.
2. Determine where the flue terminal will be
positioned.
5.4.2.2. Installation
1. Create a hole through the wall.
CAUTION! Make sure no debris or dust gets into the air
heater.
2. Carefully insert the flue terminal from the outside.
CAUTION! Do not rotate the cap.
3. Put the flue terminal in a horizontal position. Use a
level.
4. Mark the holes on the wall.
5. Drill the holes.
6. Insert screws to fix the terminal in place.
7. Seal the edges of the flue terminal with kit.
8. Fix the shield on the inside of the wall.
CAUTION! Make sure that the gasket is not damaged.
9. Connect the gasket and the twin-tube connection.
NOTICE Make sure the flue tube and the air inlet tube are
not mixed up. The flue tube should be in the centre of the
flue terminal.
10. Check if all steps have been carried out correctly.
5.4.3. Installation of the flue system parts
This chapter gives the instructions for installing an ALU
FIX flue system.
5.4.3.1. Requirements
The installation must follow these requirements:
• Minimum distance between the flue system and
combustible materials of 40 mm.
• Minimum depth of female sockets of 40 mm.
• Minimum slope of horizontal piping of 50 mm/m
(3°). This allows condensate to flow to the heater.
1000 mm
>50 mm
Figure 23 - Minimum slope of horizontal piping of 50
mm/m (3°)
NOTICE Use brackets that match the flue system.
Dierent manufacturers use dierent connection systems
for flue pipes. It is not allowed to combine systems from
dierent manufacturers.
5.4.3.2. Elements system ALU FIX thick wall
An ALU FIX flue system is created with four elements
(figure 24).
Figure 24 - The elements of a flue system

17INSTALLATION MANUAL AIR HEATER TYPE XR+
5.4.3.3. Seals
The connection between the dierent flue elements must
be made airtight and waterproof with silicon seals.
CAUTION! If the flue elements have been cut, make sure
to clean and chamfer the edges. Sharp edges will damage
the seals.
CAUTION! Do not drill or screw in the flue elements.
CAUTION! Do not try to seal the connections with kit,
foam or tape.
CAUTION! Do not use grease, vaseline or oil to lubricate
the installation.
CAUTION! Only use the lubricant allowed by the
manufacturer to lubricate the connections. A maximum
soap concentration of 1% is allowed.
NOTICE Follow the instructions from the manufacturer if
the connections need to be fixed.
5.4.3.4. Installation
Take note of the following rules and requirements when
installing a flue system:
CAUTION! Do not apply mechanical force on the parts
during installation.
Requirements for horizontal and non-vertical piping:
• Maximum distance between brackets of 1 m.
• On tensile joints; maximum distance between
brackets of 2 m.
Follow the manufacturer’s instructions.
• Spread the brackets evenly along the piping.
Requirements for vertical piping:
• Maximum distance between brackets of 2 m.
• Spread the brackets evenly along the piping.
Always place a bracket on or near a bend or elbow piece,
except if the flue pipes before and after the elbow piece
are shorter than 0,25 m. In this case, fix the second
element after the elbow with a bracket.
Every flue discharge system needs to be secured with at
least one bracket. The first bracket needs to be within the
first 0,5 m of the air heater.
When installing a flue system inside a shaft, do the
following:
1. Check the components for possible damage or
blockage.
2. Check that the pipe is at the right slope (see
Requirements).
3. Mark the flue pipes and fresh air pipes to avoid
mixing them up.
4. Make sure that the pipes extend for at least 50 mm
when passing through a wall or other obstacle.
5. Fix the last element before entering the shaft in
place. If the last element is an elbow piece, the
next element must also be fixed in place.
6. Check if ventilation openings and inspection
hatches comply with national and local regulations.

18
6. Operating the air heater
6.1. Burner cycle
The air heater’s display shows the current status of the
burner cycle (figure 25).
Figure 25 - Display of the air heater
Display Status Description Time
(seconds)
0Stand-by Waiting for heat demand. -
1 Reset Software reset. -
3 Pre-check Zero position check pressure
switch.
-
4 Pre-purge 30 seconds of pre ventilation
by the combustion fan. The
pressure switch is checked.
30
5 Pre-ignition Ignition without opening the
gas valve.
-
6 Ignition 5 seconds of ignition. The gas
valve opens.
-
7 Flame check The air heater checks if the
flame is present.
-
8 Burn The heater fires up and starts
to modulate.
240
9 Minimum Before the flame stops,
the burner will modulate to
minimum power.
-
10 Burner o The gas valve closes. The flame
stops.
-
11 Post purge Burner fan purges with fresh
air.
System fan cools the heat
exchanger.
30
60 - 120
P Anti-shuttle The heater can not generate
a heat demand during this
period.
180
F Ventilation Request to start (summer)
ventilation mode.
-
6.2. Minimum firing time
The heater will always fire for a minimum of 4 minutes,
even if the heat demand stops. This is to avoid a large
amount of start and stops and to prevent condensate from
accumulating in the flue system.
NOTICE The heater will try to ignite 2 times before it stops
and gives an error.
6.3. Delta-T-regulation
The air heater can function as a de-stratification fan. This
is called delta-T regulation and it is done via the room
thermostat, with a temperate measurement sensor that is
located on the air heater.
The system fan is activated when the temperature-
dierence between the sensor on the heater (the delta-T
NTC sensor) and the sensor in the thermostat is bigger
than 12 oC (standard factory setting). This procedure
ensures an even distribution of temperature throughout
the building, thus acting as a fully automatic de-
stratification fan.
6.3.1. Switch o delta-T-regulation
Delta-T regulation can be switched o when it is not
desired (e.g. when it causes discomfort). This can be
done in the Settings menu on the room thermostat. See
the user manual of the special Room thermostat for more
information.
NOTICE Delta-T regulation is automatically switched
o when the delta-T sensor (sensor terminal J6) is
disconnected.
6.4. Summer ventilation
The fan can be set to run in the summer. Follow the
instructions in the user manual of the special Room
thermostat.
Summer ventilation can be activated on the air heater. For
further information, see §7.2.3..

19INSTALLATION MANUAL AIR HEATER TYPE XR+
6.5. Overheating protection
The air heater's heat exchanger and flue system are both
protected from excessive temperatures.
6.5.1. Heat exchanger
An NTC sensor is located near (or on) the heat exchanger.
This sensor monitors the heat exchanger temperature.
If the heat exchanger becomes too hot, this sensor will
cause the heating process to stop. Depending on the
temperature, the air heater performs the following actions:
• Step 1: Power reduction (when possible) (display:
A07).
• Step 2: Burner stop, followed by an automatic
restart when cooled down (display: E05 / E36).
• Step 3: Burner stop, followed by a Lock Out. A
manual reset is required. (display L15).
NOTICE A manual reset can be done on the electronic
circuit board or remotely with the special room thermostat.
6.5.2. Flue system
The flue sensor (NTC) is an optional component that is
located in the flue system of the air heater. This sensor
monitors the flue temperature.
If the flue system becomes too hot, this sensor will
cause the heating process to stop. Depending on the
temperature, the heater performs the following actions:
• Step 1: Power reduction (when possible).
• Step 2: Burner stop, followed by an automatic
restart when cooled down.
• Step 3: Burner stop, followed by a Lock Out. A
manual reset is required. (display L16).
6.6. Flue passage check
The air heater is equipped with a pressure switch that
checks the passage of combustion air through the heat
exchanger. The pressure switch checks if there is sucient
movement of combustion air through the heat exchanger
(only during the pre-purge phase). If the pressure
dierence is too low, the air heater will not start. Error L-14
will be shown on the display.
7. Commissioning the air heater
7.1. Adjusting the settings
Prior to packaging, the safety and functioning of each
air heater is checked in detail. It is also set to the right
combustion eciency.
In general, the heater does not need to be adjusted after
installation. It is only necessary to perform a functional
check and to obtain a flue gas analysis and record it for
later reference.
CAUTION! Always adjust the burner settings of the heater
using the manual test mode (see §7.2.2.). Do not use the
thermostat to adjust the burner settings.
CAUTION! Use only calibrated instruments to adjust the
air heater.
CAUTION! Never carelessly turn the adjuster screws.
NOTICE Adjusting the control without a supporting flue
gas analysis voids the warranty.
Only adjust the CO2value if the CO2reading diers more
than 0,2% from its setting. O2value ± 0,3%.
7.2. Commissioning the air heater
Once the unit is installed according to this manual, the unit
can be commissioned. To do so, follow these instructions:
1. Make sure the gas supply pipe is clean, gas tight
and free from air.
2. Switch on the electric supply with the maintenance
switch.
You are now able to observe the first start-up and become
familiar with the functioning of the heater.
NOTICE If the gas line is not purged correctly, the heater
will attempt to start twice before going into a lock-out
condition. In this case, manual reset is necessary.
1. Instruct the end user of the about a safe use of the
air heater:
–The presence of gas
–The location of the manual gas valve
2. Instruct the end user about the operation of the
heater:
–Lock-out indication
–Reset

20
3. Instruct end user about the necessary
maintenance.
4. Leave this manual with the end user.
7.2.1. First use – thermostat
To commission the air heater via the room thermostat, do
the following:
• Put the thermostat in the highest position. The start
sequence is always the same.
The air heater will burn for the minimal firing time (see
§6.2. for more information).
7.2.2. First use - display
To commission the air heater via the display’s manual test
mode, do the following:
NOTICE The display’s manual test mode will only work for
maximum 10 minutes.
1. Press and hold the Return and (–) button for a
few seconds (figure 26). The display will alternate
between Lo and St. This means the heater will start
up in Low fire.
2. Press the (+) and (–) buttons to toggle between
Low and High fire (figure 26).
3. Press the (–) button until 0 is displayed to exit the
service. The air heater will always cool down the
heat exchanger for several minutes.
The test mode will automatically end after 10 minutes.
+
Figure 26 - Using the display
7.2.3. Manual operation
The air heater can be operated without an external
thermostat or signal. There are three modes available:
Heat demand deactivated
When this mode is activated, the air heater does not
respond to heat demands, except for heat demands
received through bus communication.
To activate the heat demand deactivated mode, do the
following:
1. Press the (+) and (-) buttons (figure 27)
simultaneously. The display shows a blinking 0.
2. Press the (+) button until the display shows a
blinking 6.
3. Press the OK button to deactivate the heat
demands. The display shows H-.
12 hour burner cycle
When this mode is activated, the air heater starts a burner
cycle of 12 hours.
To activate a 12 hour burner cycle, do the following:
1. Press the (+) and (-) buttons (figure 27)
simultaneously. The display shows a blinking 0.
2. Press the (+) button twice until the display shows a
blinking 7.
3. Press the OK button to activate the 12 hour burner
cycle mode. The display shows H2.