Exodraft RHG User manual

Your energy. Optimized.
Chimney Fan
RHG
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RHG

Your energy. Optimized.
Chimney Fan | RHG
Content
Product information 7
Scope of supply 7
Accessories and spare parts 7
Technical specications 8
Precautions and user instructions 11
Mechanical installation 12
Minimum distance 12
Installation onto a brick chimney 13
Installation onto a steel chimney 15
Multiple fans on chimney 17
Electrical installation 18
Isolation switch 18
Startup and conguration 19
System testing 19
Operating the replace using the EFC21 controller 19
Testing ue gas extraction and the pressure switch setting 20
Care and cleaning 21
Troubleshooting 22
UK Conformity Assessed 26
Declaration of Conformity 27

Disposal
Electrical and electronic equipment (EEE) often contain materials, components and substances
that may harm the environment or be hazardous to your health. Products (WEEE) marked with
the ‘crossed-out wheeled bin’ symbol should be disposed of separately from other waste at
the end of its life. Though legislation may differ from country to country we strongly advise
that electrical and electronic waste is separated from other waste and disposed of according to
national legislation to protect the environment and personnel that may come into contact with
waste.
How to use this manual
This manual has been prepared based on the specific product and
contains relevant technical information and installations guides.
Accessories and spare parts are not covered by this manual.
Please refer to the individual manuals of these components.
This installation manual does not contain any system design documentation.
Failure to observe instructions marked with a danger symbol
may result in personal injury and/or damage to the product.
Errors and omissions excepted.

Disposal
Electrical and electronic equipment (EEE) often contain materials, components and substances
that may harm the environment or be hazardous to your health. Products (WEEE) marked with
the ‘crossed-out wheeled bin’ symbol should be disposed of separately from other waste at
the end of its life. Though legislation may differ from country to country we strongly advise
that electrical and electronic waste is separated from other waste and disposed of according to
national legislation to protect the environment and personnel that may come into contact with
waste.
How to use this manual
This manual has been prepared based on the specific product and
contains relevant technical information and installations guides.
Accessories and spare parts are not covered by this manual.
Please refer to the individual manuals of these components.
This installation manual does not contain any system design documentation.
Failure to observe instructions marked with a danger symbol
may result in personal injury and/or damage to the product.
Errors and omissions excepted.
Symbols
The following symbols may be used in the manual
to draw attention to danger or risk of personal
injury or damage to the product.
General prohibition
Failure to observe instructions marked with the prohibited
symbol may result in extreme danger or serious personal injury.
General warning
Failure to observe instructions marked with a danger symbol
may result in personal injury and/or damage to the product.
General attention
Marks a dangerous situation that, in the worst-case scenario,
can cause serious personal injury or significant damage to the product.
Electricity hazard/High Voltage
Marks a situation in which caution is advised due to the risk of high voltage electric
shock which can cause serious personal injury or significant damage to the product.
Connect an earth terminal to the ground
Failure to observe instructions marked with a danger symbol
may result in personal injury and/or damage to the product.
Permitted and approved
Permitted and approved method of installation.
Prohibited and not approved
Prohibited and not approved method of installation.

Warning
To minimise the risk of fire, electric shock, personal injury
and/or damage to the product please observe the following:
• Please always read the manual and only use the product in accordance with the
manufacturer’s instructions. If in doubt, contact one of the Exodraft specialized dealers.
• All installations must be carried out by properly qualifi ed personnel in accordance with
national legislation and regulations.
• This product must be earthed. Get assistance from an qualifi ed electrician when in doubt.
• The chimney fan must always remain switched on when the fireplace is in use.
• Ensure that the chimney has been swept before mounting the fan to avoid chimney fires.
• Prior to servicing the product, disconnect the power and ensure that it cannot accidentally
be reconnected.
• Exodraft always recommends the use of a smoke alarm when a solid fuel fireplace is
installed.
• If the Exodraft fan system has been designed for solid fuel/multi fuel installations, please
ensure that the design meets the requirements of BS EN15287-1. If this cannot be achie-
ved, a smoke alarm must be installed in the same room as the heat appliance.
• Note! Fans serving biomass boilers must be cleaned more often due to extensive residue/
soot building. It is essential that a regular inspection and cleaning schedule is implemen-
ted, especially in the early days of usage, to experience how often regular inspections and
cleaning should be carried out.
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Warning
To minimise the risk of fire, electric shock, personal injury
and/or damage to the product please observe the following:
• Please always read the manual and only use the product in accordance with the
manufacturer’s instructions. If in doubt, contact one of the Exodraft specialized dealers.
• All installations must be carried out by properly qualifi ed personnel in accordance with
national legislation and regulations.
• This product must be earthed. Get assistance from an qualifi ed electrician when in doubt.
• The chimney fan must always remain switched on when the fireplace is in use.
• Ensure that the chimney has been swept before mounting the fan to avoid chimney fires.
• Prior to servicing the product, disconnect the power and ensure that it cannot accidentally
be reconnected.
• Exodraft always recommends the use of a smoke alarm when a solid fuel fireplace is
installed.
• If the Exodraft fan system has been designed for solid fuel/multi fuel installations, please
ensure that the design meets the requirements of BS EN15287-1. If this cannot be achie-
ved, a smoke alarm must be installed in the same room as the heat appliance.
• Note! Fans serving biomass boilers must be cleaned more often due to extensive residue/
soot building. It is essential that a regular inspection and cleaning schedule is implemen-
ted, especially in the early days of usage, to experience how often regular inspections and
cleaning should be carried out.
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Product information
An Exodraft RHG chimney fan is designed with horizontal discharge.
The fan must be installed on top of a chimney and creates a negative pressure (suction) along the full
length of the ue.
The fan is developed specically for open gas replaces with a max. gas supply of 12.0 kW (40,900 Btu/h).
For higher gas supply values, please contact Exodraft.
The fan is part of an Exodraft system and should be connected to an EFC21 Exodraft controller for
optimal effect.
Please check out this site for advice about other Exodraft products:
www.exodraft.com
Scope of supply
• Exodraft RHG chimney fan
• Mineral wool mat for vibration-free mounting
• Packet with location brackets and nuts
• Installation manual and user instructions
Accessories and spare parts
The table below shows the accessories and spare parts available for the RHG-models.
Accessories* Spare parts
Flanges (for steel chimneys) Motors
RSD - Dilution bolts (for brick chimneys) Impellers and axial vanes
Capacitors Mineral wool mats
SVD-RS - Vibrations dampers (for anges on steel chimneys)
PDS - Pressure differential switch
*This manual does not describe the specic use of accessories. We refer to the separate manuals for such components.
For more details contact your Exodraft dealer.

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Warranty
All Exodraft products are covered by a 2-year guarantee as per European consumer rights legislation. For
some countries an extended period of guarantee may apply depending on either national legislation or
other clearly stipulated conditions. Customer complaints must be handled by a specialised dealer or
wholesaler (preferably where the Exodraft product has been bought originally). An updated list of Exodraft
specialised dealers can be found on our website for the country in question.
Exodraft products must always be installed by properly qualied personnel. Exodraft reserves the right to
change these guidelines without prior notice.
The warranty and liability does not cover instances regarding personal injury or damage to property or the
product that can be ascribed to one or more of the following causes:
• Failure to follow this installation and operation manual
• Incorrect installation, start-up, maintenance or servicing
• Improper repairs
• Unauthorised structural modications made to the product
• Installation of additional components that have not been tested/approved with the product
• Any damage resulting from continued use of the product despite an evident defect
• Failure to use original spareparts and accessories
• Failure to use the product as intended
• Exceeding or failure to meet the limit values in the technical data
• Force majeure
Technical specications
The RHG fan is designed for horizontal discharge. It is available in one size.
This chimney fan is made of cast aluminium with a forwards-curved centrifugal impeller made of
galvanised steel.
Chimney fan Centrifugal impeller
RHG160-41 Galvanised steel impeller
The chimney fan can be opened for service and cleaning purposes.
The chimney fan has a built-in fail-safe system consisting of a pressure differential switch (PDS) and two
pressure sensors, ensuring correct airow when the re is used.
The sound level is below 60 dB (measured at a distance greater than 2.5 metre away from the fan) if
installed correctly. Further information about sound levels available in our technical brochure/datasheet.
The RHG chimney fan is designed to operate with a maximum ue gas temperature of 200 °C.
The run capacitor is considered a wear part and will need to be replaced depending on usage.

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Technical data
RHG
A
B
E
C
D
Model Motor specications Weight Dimension [mm]
rpm V Amp kW* kg AB [Ø] C D E [Ø]
RHG160-41 1400 1 x 230 0.40 0.09 10 230 290 187 103 142
*Power consumption at ambient temperature of 20 °C
• The RPM of the above fan models are innitely adjustable
• The motor is overload protected
• Motor protection IP rating IP54
• Insulation class F

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Construction and components
1 Top section
2Base plate
3Motor
4Cooling plate
5 Pressure differential switch (PDS)
6Pressure sensors
7 Impeller
8 Bottom section
9Guide vanes
10 Inlet ring
11 Armoured cable and connecting cable
12 Mineral wool mat
13 Location brackets, bolts and nuts etc.
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3
56
1
7
4
2
12
13
11
8
9
10

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Precautions and user instructions
These instructions, applicable standards and relevant safety procedures from the manufacturer must be
followed and at the same time the ofcial provisions in force in the country, where the product is installed,
must be observed.
Support system
Prior to installation of a chimney fan, it must be determined if the chimney can safely carry the weight of the
chimney fan.
A steel chimney should be well supported at the roof penetration point. If the chimney extends high above
the roof, the chimney and the fan should be secured. The manufacturer´s instructions must be followed.
Brick chimneys do not usually need any kind of support to carry the weight of the chimney fan.
System type
Gas replaces and individual gas-red boilers used in private dwellings normally operate in a relatively
stable environment, where no major pressure uctuations occur. However, to secure an optimal use of the
Exodraft system speed adjustments and adjustment of air intakes are required depending on the weather
outside and on the stage of the ring process.
Gas replaces and individual gas-red boilers used in restaurants are exposed to major pressure changes
due to factors like the constant opening/closing of doors, kitchen exhaust fans pulling out air, etc. In an
environment like this spillage of smoke can easily occur.
The fan must be connected to an Exodraft control type EFC21.
Precautions
Be aware that it
• must be installed on top of the chimney
• can be mounted on steel as well as brick chimneys
• must be mounted with the approved Exodraft accessories
• must be accessible for service and maintenance from the roof or from a ladder/cherry picker
• the distance to ammable materials must be at least 500 mm
• the isolation switch must be easily accessible
ATTENTION! It is always recommended to install a
smoke alarm in connection with a wood red installation.

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Mechanical installation
Exodraft products must always be installed by properly qualied personnel and according to the
manufacturer’s instructions.
Gas appliances should be checked for safety once a year by a installer registered in the Gas Safe Register.
Details of local installers can be obtained by accessing the website at www.gassaferegister.co.uk
Positioning of the chimney fan
The chimney fan can be mounted horizontally or vertically. Be aware of national law and building
regulations!
Minimum distance
The minimum distance to ammable materials must be at least 500 mm (national legislation must be
observed)!
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Min. distance according
to national legislation!
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Installation onto a brick chimney
If the fan is to be tted on a brick chimney, please use the location brackets. See the installation guide
below.
Step Action Illustration
1
Measure the inside diameter of the brick chimney.
Then cut a hole in the mineral wool mat that
matches.
Note that there must always be a minimum of
20 mm of mat surface at any point around the
circumference of the hole. 20 mm
2
Fit the location brackets in the grooves on the
underside of the bottom section and fasten using
the nuts and bolts supplied.
Please note that the bolts must be inserted from
beneath.
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3
Adjust the distance between the location brackets
to t the inside diameter of the chimney, and then
tighten the nuts. Note that there should be a 2-4
mm gap between the brackets and the chimney
so as to avoid transmitting vibrations from the fan
to the chimney
A and B measurements: please refer to step 1.
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4
Place the mineral wool mat on top of the chimney.
It can be used with either of the sides facing
the fan. The chimney fan can now be lowered
into place (on top of the mat) with the location
brackets into the chimney.
IMPORTANT! Do not screw or bolt the brackets into
the ue pipe!
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5
Before taking the fan into operation, please make
sure that:
• the nuts in the location brackets have been
tightened.
• the connection on the armoured cable has
been fastened. The armoured cable must hang
straight down from the fan.
• the chimney fan is securely closed.
• when opening/closing the fan, support the
upper part with your hand.
NOTICE! The end-user should be made aware of
the fact that the chimney fan must always remain
switched on when the replace/boiler is in use.
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6To avoid rainwater from entering the chimney fan
the slots and holes must be sealed with silicone.
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Installation onto a steel chimney
If the fan is to be tted on a steel chimney, the chimney fan must be installed with an approved ange.
See the installation guide below.
Step Action Illustration
1
The ange must be placed so that the spigot goes
into the chimney!
Measure the diameter of the hole in the ange.
2
Then cut a hole in the mineral wool mat that
matches.
Note that there must always be a minimum of
20 mm of mat surface at any point around the
circumference of the hole.
20 mm
3
Cut the corners off the mineral wool mat, so there
is room to t the vibration dampers.
If a temperature sensor is to be installed with the
chimney fan, cut a groove in the mineral wool mat
that is big enough for the sensor.
Now place the mineral wool mat on the ange
(between the ange and the fan).
4Fixate the ange to the chimney fan with the use
of the vibration dampers supplied with the ange.
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5The fan assembly can now be tted onto the steel
chimney.
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6
Before taking the fan into operation, please make
sure that:
• the nuts in the ange have been tightened.
• the connection on the armoured cable has
been fastened. The armoured cable must hang
straight down from the fan.
• the chimney fan is securely closed.
• when opening/closing the fan, support the
upper part with your hand.
NOTICE! The end-user should be made aware of
the fact that the chimney fan must always remain
switched on when the replace/boiler is in use.
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7To avoid rainwater from entering the chimney fan
the slots and holes must be sealed with silicone.
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Multiple fans on chimney
If two or more chimney fans are required to create sufcient draft, installation procedures are almost the
same as for single fan installation. See the installation guide below.
Multiple fans on a brick chimney
1
If two or more fans are required to create suf-
cient draft, a special adapter plate is required
(not an Exodraft part). The two holes in the plate
should match the throat diameter of the fan
model used and the distance from center to center
should be at least equal to the fan width. Exodraft
recommends that a partition is mounted between
the fans.
The adapter should be sealed with silicone and
bolted onto the top.
When installing multiple fans, it is extremely
important that the fans are of the same model
and size, and they must be controlled in tandem
by one motor speed control.
A similar approach should be taken if the ue size
exceeds the fan base dimensions. The adapter
plate should be sized so it covers the ue and
secured. A hole should be cut in the center of the
plate and the fan mounted centered over the hole.
Multiple fans on a steel chimney
1
If two or more chimney fans are required to create
sufcient draft, the installation procedures are
basically the same as for single fan installation
on a steel chimney. However, as the fans will be
placed next to each other, a special plenum box
will be required (not an Exodraft part).
Exodraft recommends that a partition is mounted
between the fans.
When installing multiple fans, it is extremely
important that the fans are of the same model
and size, and they must be controlled in tandem
by one motor speed control.

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Electrical installation
The fan and motor specications are provided on the fan’s type plate. All the single-phased fan models are
adjustable in speed.
Wires are to be connected in accordance the wiring diagram. For further details, please see guidelines for
the Exodraft control units.
Any lightning conductor connected to the fan must respect current applicable national legislation.
Exodraft motor Grundfos motor
87 6 5 4 321
AUX
MAIN
t°
P
BN
BK
BU
4
5
3
1
2
1
2
3
4
NO
NC
C
N
L1 5
YEGN
POWER SUPPLY
1 x 230 V ~ 50 Hz
6 x 0,75
BK
BN
BU
3 x 0,75
YEGN
Isolation switch
In accordance with the provisions of the applicable EU Machinery Directive a combustion-gas fan must
always have an isolation switch tted. The isolation switch must comply with national wiring standards,
and it must be ordered separately, as it is not part of the standard Exodraft scope of delivery.

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Startup and conguration
System testing
Before any adjustments are made to the system, please follow these procedures:
Turn the chimney fan ON and make sure that it is turning. Increase and decrease the speed of the fan by
adjusting the speed control to make sure the fan is operating properly.
After system testing, Exodraft recommends igniting your replace or stove. Follow the guide below for
correct lighting and use of the chimney fan.
Operating the replace using the EFC21 controller
DANGER! Check that the heating appliance (water heater, furnace, etc.) is
working properly after the chimney fan has been switched on. Make sure that
no ue gases are spilling out as this can lead to carbon monoxide poisoning!
B
A
Press the ON/OFF button
• The operating LED (B) will ash GREEN until the correct chimney draught is conrmed.
If it ashes YELLOW, then the Air inlet must be opened.
The operating LED will then become GREEN and the replace can be lit.
• To stop the fan press the ON/OFF (A) button.
External ON/OFF switch
• The ON/OFF (A) switch can be used to start, stop and reset the controller.
• If the external ON/OFF (A) switch is used, it has priority over the control panel and the remote control
Note! The switch must be in the OFF position before the controller can be re-started.

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Testing ue gas extraction and the pressure switch setting
This test must be carried out to ensure that the pressure switch (PDS) and the speed of the chimney fan
have been adjusted correctly for the unit in question. The test must be carried out with doors and windows
closed. If other extraction fans have been installed, these must be switched on during the test.
Test procedure
If ue gases enter the room, the speed of the chimney fan must be increased. If ue gases enter the room
without the failsafe system shutting off the gas supply, the pressure switch (PDS) must be adjusted to a
higher setting.
If the sound pressure level is very high, reduce the speed of the chimney fan. Then perform the test once
more and repeat this procedure if necessary. The procedure must always be concluded with a test.
During such a test, all windows and doors must be closed and any ventilation fans switched on. Please
refer to the relevant Exodraft Gas Fan Controller Installation Instructions for guidance. Remove the top
cover and adjust the (PDS) to the required value.
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PDS top cover
WARNING! Do not open the top section unless the
power to the chimney fan has been disconnected!