153266-6.pmd

Falcon GTE -

Installation & Servicing

GENERAL

Note.
Fuel rates and flue gas data relate to maximum output ratings.
Gas firing data relates to the use of NATURAL GAS ONLY.
Details for the use of LPG are available on request from Caradon
Ideal Ltd.
Natural gas consumption is calculated using a calorific value of
38.7MJ/m

(1038Btu/ft

) gross or 34.9MJ/m

(935Btu/ft

) nett at

C and 1013.25mbar.

Oil rates relate to Gas Oil using a calorific value of 45.56 MJ/kg
gross or 42.69 MJ/kg nett.

Table 1 Performance Data

Boiler

GTE 4

GTE 5

GTE 6

GTE 7

GTE 8

Number of Sections

Maximum

102

Heat Ouptut

Btu/hx10

170

218

266

314

348

Minimum

Heat Output

Btu/hx10

123

170

218

266

314

Hydraulic

mbar

20.3

33.3

49.3

68.4

84.0

Resistance at 11k

in w.g.

8.1

13.3

19.7

27.4

33.6

Hydraulic

mbar

6.1

10.1

14.9

20.7

25.4

Resistance at 20k

in w.g.

2.5

4.0

6.0

8.3

10.2

Combustion Chamber

mbar

0.4

0.6

0.8

Resistance (at zero draught)

in w.g.

0.16

0.24

0.32

Minimum Draught at Smokehood mbar

Outlet (for max. output)

in w.g.

HEALTH & SAFETY DOCUMENT NO. 635

The electricity at work regulations, 1989. The manufacturer's
notes must NOT be taken, in any way, as overriding statutory
obligations.
IMPORTANT. These appliances are CE certified for safety and
performance. It is, therefore, important that no external control
devices, e.g. flue dampers, economisers etc., are directly
connected to these appliances unless covered by these
Installation and Servicing Instructions or as otherwise
recommended by Caradon Ideal Limited in writing. If in doubt
please enquire.
Any direct connection of a control device not approved by
Caradon Ideal Limited could invalidate the certification and the
normal appliance warranty. It could also infringe the Gas Safety
Regulations and the above regulations.

Maximum Gross

l/h

5.61

7.18

8.80

10.38

11.51

Oil Rate

gal/h

1.23

1.58

1.93

2.27

2.52

Maximum Flue

0.031

0.040

0.049

0.058

0.064

Gas Volume

/min

104

123

136

Flue Gas CO

/ Temperature

% /

12 / 200

Oil

Maximum

5.58

7.16

8.78

10.33

11.48

Gas Rate

197.5

252.8

309.8

365.4

405.1

Maximum Flue

0.032

0.042

0.051

0.061

0.067

Gas Volume

/min

109

128

142

Flue Gas CO

/ Temperature

% /

9 / 200

Gas

Table 2 General Data

Flow Connection

R 1

Return Connection

R 1

Maximum Operating Pressure

bar

Boiler Thermostat Setting

30-90

Safety Thermostat Setting

110

Nominal Flue

m m

153

180

Diameter

in.

Boiler Water

Content

gal

7.9

9.5

11.0

12.5

14.1

Boiler DRY Weight

254

295.5

343.5

380.5

422.5

less Burner Unit

560

651.5

757.5

839

931.5

Falcon GTE -

Installation & Servicing

GENERAL

CONTENTS

Assembly. ................................................................... 11-22

Boiler Clearances. ............................................................ 6

Burner Connection. ........................................................ 11

Commissioning and Testing. ................................ 26 & 27

Electrical Connections. ............................................. 22-24

Electrical Supply. .............................................................. 5

Flue Installation. ................................................................ 5

Fluing. .............................................................................. 10

Gas Safety Regulations .................................................... 4

Gas Supply. ........................................................................ 5

Hydraulic Resistance. ...................................................... 2

Initial Lighting. ................................................................. 27

Introduction. ...................................................................... 3

Installation. ...................................................................... 10

Option Kits. ........................................................................ 3

Performance Data. ........................................................... 2

Servicing. ........................................................................ 28

Ventilation. ........................................................................ 7

Water Circulation. ............................................................ 5

Water Connections. ......................................................... 7

Water System Requirements. ......................................... 8

Water Treatment. ............................................................. 5

Wiring Diagrams. ................................................... 23 & 24

CAUTION.

To avoid the possibility of injury during the installation, servicing or cleaning of

this appliance, care should be taken when handling edges of sheet steel components.

Falcon GTE

Gas and Fuel Oil
PI No. 0049AT2527
Destination Countries: GB, IE

INTRODUCTION

The Falcon GTE boilers are a range of cast iron sectional
pressure jet boilers offering high efficiency operation, ease of
maintenance, fuel flexibility and low emissions in a compact
package. Suitable for oil or gas operation the Falcon GTE range
is supplied in a choice of 5 standard models, rated in outputs
from 36kW (123,000 Btu/h) to 102kW (348,000 Btu/h) the range
has a maximum operating pressure of 4 bar. The GTE 7 and
GTE 8 may be high/low operation.

Designed with a large combustion chamber and 3 pass,
horizontal flue way incorporating fins and cast iron turbulators,
the Falcon GTE ensures maximum heat transfer efficiency (up to
93% net).

The boilers are suitable for: combined indirect pumped
domestic hot water and central heating systems; independent
indirect pumped domestic hot water or central heating systems.

Fully pumped systems may be open vented or sealed.

The boilers are NOT suitable for:

1. Gravity DHW systems
2. Gravity heating systems
3. Direct domestic hot water supply

Options
Hours run meter (IC8)

Burners with high/low operation are available on Models GTE 7
and GTE 8 with DR31 control panel

Falcon GTE -

Installation & Servicing

GENERAL

SAFETY

Current Gas Safety (Installation and Use) Regulations or
rules in force.

It is law that all gas appliances are installed and serviced by a
CORGI registered installer in accordance with the regulations
below. Failure to install appliances correctly could lead to
prosecution. It is in your own interest, and that of safety, to
ensure the law is complied with.

The following must be conformed with:

Current Building Regulations and Clean Air Act

Water Authority Regulations

Local Authority Regulations and Regional Bylaws

Gas Safety Regulations

Any special regional requirements of local Electricity and Gas
undertaking.

Fire Service and Insurance Company requirements.

In the interests of safety, a competent installer should be
employed to effect the installation of the appliance.
Manufacturer's notes must NOT, in any way, be taken as over
riding statutory obligations.

The installation of the boiler MUST also be in accordance with
the latest I.E.E. (BS7671) Wiring Regulations, local buildings
regulations, bye-laws of the local water authority, the building
regulations and the Building Standards (Scotland) and any
relevant requirements of the local authority.

Detailed recommendations are contained in the following
Codes of Practice:

BS 799 Pt4 & 7 Oil burning equipment.

BS 799 Pt5

Oil storage tanks.

BS 5410 Pt1

Installation for space heating and hot water
supply.

BS 5440

Installation and maintenance of flues and
ventilation for gas appliances of rated input
not exceeding 70kW net (1st, 2nd and 3rd
family gases).

Part 1

Specification for installation of flues

Part 2

Specification for installation and maintenance
of ventilation for gas appliances.

BS 5854

Flues and flue structures in buildings.

BS 5885 Pt1

Gas burners - with inputs 60kW and above.

NOTE TO THE INSTALLER: LEAVE THESE INSTRUCTIONS ADJACENT TO THE BOILER.

BS 6644

Installation of gas fired hot water boilers of
rated input between 70kW and 1.8MW (net)
(2nd and 3rd family gases).

BS 6798

Installation of gas fired hot water boilers of
rated input not exceeding 70kW.

BS 6880

Low temperature hot water heating systems of
output greater than 45kW.

Part 1

Fundamental and design considerations

Part 2

Selection of equipment.

Part 3

Installation, commissioning and maintenance.

BS 6891

Installation of low pressure gas pipework of up
to 28mm (R1) in domestic premises (2nd
family gas).

EN 303.1

Heating boilers with forced draught burners.
General requirements.

EN 303.2

Heating boilers with forced draught burners
with atomising oil burners.

EN 304

Test code for heating boilers for atomizing oil
burners.

73/23 EEC

Low voltage directive. (Relevant standard is
EN60335.1)

89/336 EEC

Electromagnetic Compatibility Directive.
(Relevant standards are EN50081.1,
EN50082.1 and EN55014.)

90/396 EEC

Gas Appliances Directive. (Relevant standards
are EN303.1, EN303.2 and EN304.)

92/42 EEC

Boiler Efficiency Directive.

IGE/UP/1

Soundness testing and purging of industrial
and commercial gas installation.

IGE/UP/2

Gas installation pipework, boosters and
compressors on industrial and commercial
premises.

IGE/UP/10

Installation of gas appliances in industrial and
commercial premises.

SAFE HANDLING OF SUBSTANCES

Care should be taken when handling the boiler insulation
panels, which can cause irritation to the skin. No asbestos,
mercury or CFCs are included in any part of the boiler or its
manufacture.

Assembly and Installation Instructions for Ideal Falcon GTE heating boilers should be read in conjunction with the general
technical data tables enclosed and any other technical publication supplied with the burner.

Falcon GTE -

Installation & Servicing

GENERAL

GAS SUPPLY

The local gas supplier should be consulted, at the installation
planning stage, in order to establish the availability of an
adequate supply of gas. An existing service pipe must NOT be
used without prior consultation with the local gas supplier.

A gas meter can only be connected by the local gas supplier or
by a registered CORGI engineer.

An existing meter should be checked, preferably by the gas
supplier, to ensure that the meter is adequate to deal with the
rate of gas supply required. A minimum working gas pressure
of 17.5mbar MUST be available at the boiler inlet.

Do not use pipes of smaller size than the burner inlet gas
connection.

The complete installation MUST be tested for gas soundness
and purged in accordance with the appropriate standards listed
on page 4.

FLUE INSTALLATION

IMPORTANT
It is the responsibility of the installer to ensure, in practice, that
products of combustion discharging from the terminal cannot re-
enter the building or any other adjacent building through
ventilators, windows, doors, other sources of natural air
infiltration, or forced ventilation / air conditioning.

If this should occur the appliance MUST be turned OFF, labelled
as 'unsafe' and corrective action taken.

The flue must be installed in accordance with the appropriate
standards listed on page 4.

WATER CIRCULATION SYSTEM

The system pump MUST be connected to the boiler.

The boiler must NOT be used for direct hot water supply. The
hot water storage cylinder MUST be of the indirect type.

Single feed, indirect cylinders are not recommended and MUST
NOT be used on sealed systems.

The appliances are NOT suitable for gravity central heating nor
are they suitable for the provision of gravity domestic hot water.

The hot water cylinder and ancillary pipework, not forming part of
the useful heating surface, should be lagged to prevent heat
loss and any possible freezing - particularly where pipes run
through roof spaces and ventilated underfloor spaces.

The boiler must be vented.

Draining taps MUST be located in accessible positions, which
permit the draining of the whole system - including the boiler
and hot water storage vessel. They should be at least 1/2" BSP
nominal size and be in accordance with BS. 2879.

The central heating system should be in accordance with the
relevant standards listed on page 4.

Due to the compact nature of the boiler the heat stored within the
castings at the point of shutdown of the burner must be
dissipated in order to avoid overheating. In order to allow pump
operation after burner shutdown the boiler control box
incorporates a pump overrun facility. In order to make use of
this, the pump must be supplied from the terminals inside the
boiler. Note: for pumps requiring greater than 1.0amp current,
they must be connected via a relay.

WATER TREATMENT FOR HOT WATER AND
HEATING BOILERS

There is a basic need to treat the water contained in all heating
and indirect water systems, particularly open vented systems. It
is assumed, incorrectly, that because boilers are operating in
conjunction with what is apparently a closed circuit an open

vented system will not, under normal circumstances, allow

damage or loss of efficiency due to hardness salts and

corrosion once the initial charge of water has been heated up a

few times.

1mm of lime reduces the heat transfer from metal to water by

10%.

In practice the deposition of these salts is liable to cause noises

from the boiler body or even premature boiler failure. Corrosion

and the formation of black iron oxide sludge will ultimately result

in premature radiator failure.

Open vented systems are not completely sealed from the

atmosphere if proper venting and expansion of system water is

to be achieved. The same tank is used to fill the system with

water and it is through the cold feed pipe that system water

expands into the tank when the boiler passes heat into the

system.

Conversely, when the system cools, water previously expelled is

drawn back from the tank into the system together with a quantity

of dissolved oxygen.

Even if leakage from the heating and hot water system is

eliminated there will be evaporation losses from the surface of

the tank which, depending upon ambient temperature, may be

high enough to evaporate a large portion of the system water

capacity over a full heating season.

There will always be corrosion within a heating or hot water

system to a greater or lesser degree, irrespective of water

characteristics, unless the initial fill water from the mains is

treated. Even the water in closed systems will promote

corrosion unless treated. For the reason stated, Caradon Ideal

Limited strongly recommend that when necessary the systems

is thoroughly cleaned, prior to the use of stable inhibitor, which

does not require continual topping up to combat the effects of

hardness salts and corrosion on the heat exchangers of the

boiler and associated systems.

Caradon Ideal Limited advise contact directly with specialists on

water treatment such as:

GE Betz Ltd

Fernox Manufacturing Co. Ltd.

Sentinel Division,

Cookson Electronics,

Foundry Lane,

Forsyth Road, Sheerwater

Widnes, Cheshire,

Woking, Surrey,

WA8 8UD

GU21 5RZ

Tel: 0151 424 5351

Tel: 01799 521 133

ELECTRICAL SUPPLY

WARNING

This appliance must be earthed.

A 230V - 50Hz mains supply is required, fused at 5amps.

Wiring external to the appliance MUST be in accordance with the

current I.E.E. (BS7671) Wiring Regulations and any local

regulations which apply.

The point of connection to the mains should be readily

accessible and adjacent to the boiler.

LOCATION OF THE BOILER

The boiler must stand on a non-combustible floor (i.e. concrete

or brick) which must be flat, level and of a suitable load bearing

capacity to support the weight of the boiler (when filled with

water) and any ancillary equipment.

If the boiler is mounted on a plinth then the dimensions must

exceed the plan area of the boiler by at least 75mm on each side.

The boiler must not be fitted outside.

Falcon GTE -

Installation & Servicing

GENERAL

0,5m

560

987

Boiler

Dimension mm

GTE 4

754

GTE 5

881

GTE 6

1008

GTE 7

1135

GTE 8

1262

FAL5814

BOILER DIMENSIONS

BOILER CLEARANCES

The minimum dimensions indicated on
the following drawing must be respected
to ensure good access around the
boiler.

Note.

To allow the inlet of the combustion air,
the boiler room must be adequately
ventilated, the section and the location of
which must comply with local
recommendations.

Refer also to Frame 3.

560

987

50(1)

189

188

753

608

111

214

355

346

205

heating outlet
EO

heating
return
EO

3/4" tapped
draining tube

115

117

156

162

165

(1) Adjustable feet: basic height 50mm with 35 to 65mm adjustment range.

Boiler
Dimension A

Dimension B

Dimension C

Dimension D

Dimension E

in BSP

754

592

153

423

881

719

153

550

1008

846

180

673

1135

973

180

800

1262

1100

180

927

GTE 4

GTE 5

GTE 6

GTE 7

GTE 8

Rp : Tapped
R : Threaded

CO
flue gas
spigot

360

110

FAL5813

Falcon GTE -

Installation & Servicing

GENERAL

VENTILATION

Safe, efficient and trouble-free operation of conventionally
flued gas boilers is vitally dependent on the provision of an
adequate supply of fresh air to the room in which the
appliance is installed.

Ventilation by grilles communicating directly with the outside
air is required at both high and low levels. The minimum free
areas of these grilles must be according to the following
scale:

FILLING THE SYSTEM

Position ventilation grilles to avoid the risk of accidental
obstruction by blockage or flooding. If further guidance on
ventilation is required then consult BS 6644.

The supply of air by mechanical means to a space housing the
boiler should be by mechanical inlet with natural or mechanical
extraction. Mechanical extract ventilation with natural inlet must
not be used.

Where a mechanical inlet and a mechanical extract system is
applied, the design ventilation flow rates should be as in Table 4
of BS 6644.

Note.

For mechanical ventilation systems an automatic control should
be provided to cause safety shutdown or lockout of the boiler(s)
in the event of failure of air flow in either inlet or extract fans.

IMPORTANT. The use of an extractor fan in the same room as
the boiler (or in an adjacent communicating room) can, in
certain conditions, adversely affect the safe operation of the
boiler.

Where such a fan is already fitted (or if it is intended to fit an
extractor fan after installation of the appliance) the advice of the
gas supplier should be obtained.

The temperature within a boiler room shall not exceed 25

within 100 mm of the floor, 32

C at mid height and 40

C within

100 mm of the ceiling.

Filling shall be performed with a low flow rate from a low point
in the boiler room in order to ensure that all the air in the boiler
is bled from the high point of the system.

Always stop the pump before filling.

IMPORTANT. Instructions for starting up the boiler for the first
time after the system is fully or partly drained:

If all the air is not bled naturally to an expansion vessel which
opens out onto the air, the system must include manual

bleeder valves, in addition to automatic bleeder valves with the
capability to bleed the system by themselves when it is
operating. The manual bleeder valves are used to bleed all the
high points of the system and to make sure that the filled system
is free of air before the burner is turned on.

General

Recommendations relating to the water system are contained in
BS. 5449 and BS. 6880.

BOILER WATER CONNECTIONS

Flow and return connections are positioned at the rear of the
boiler and vary in size depending upon the output model.
Refer to Table 2, page 2 for sizes.

The flow and returns are provided with threaded connections.

" drain connection is provided at the rear bottom of the

boiler heat exchanger.

189

188

753

355

205

165

fal5921

Required area (cm

) per kW of total rated input (net)

Boiler room

Enclosure

Low level (inlet)

High level (outlet)

Note: Where a boiler installation is to operate in summer
months (e.g. DHW) additional ventilation requirements
are stated, if operating for more than 50% of time (refer
to BS6644).

Falcon GTE -

Installation & Servicing

GENERAL

SEALED (PRESSURISED) SYSTEMS

OPEN VENTED SYSTEM REQUIREMENTS - minimum static head requirements

The Falcon GTE boiler has a minimum static head requirement of
5.0 metres (16.5 feet approx.) depending on the particular
characteristics of the system design (see diagram). The information
provided is based on the following assumptions.

1. An open vent/safety pipe connection is made immediately after

the flow connection.

2. A cold feed/expansion pipe connection is made to the system

return pipe within 0.75m of the boiler return connection.

3. The maximum flow rate through the boiler is based on a

temperature difference of 11

C (20

F) at full boiler output with the

circulating pump positioned in the flow of the system.

4. The boiler is at the highest point of the system. Systems

designed to rise above the flow connections will, of course,
automatically require a minimum static head higher than shown.

5. The position of the open vent/safety pipe above the expansion

cistern water level is given as a guide only. The final position will
depend upon particular characteristics of the system. Pumping
over of water into the expansion cistern should be avoided.

6. Both open vent/safety pipe and cold feed/expansion pipes must

be of adequate diameter to suit the output of the boiler (see table
below).

Working pressure 4 bar maximum.

Particular reference should be made to BS. 6644: Section 2;
Subsection 11 and Guidance note PM5 "Automatically
controlled steam and hot water boilers" published by the
Health and Safety Executive.

The information and guidance given below is not intended to
override any requirements of either of the above publications
or the requirements of the local authority, as or water
undertakings.

In general commercial closed pressurised systems are
provided with either manual or automatic water make up.

In both instances it will be necessary to fit automatic controls
intended to protect the boiler, circulating system and ancillary
equipment by shutting down the boiler plant if a potentially
hazardous situation should arise.

Examples of such situations are low water level and operating
pressure or excessive pressure within the system.
Depending on circumstances, controls will need to be either
manual or automatic reset. In the event of a shutdown both
visual and audible alarms may be necessary.

Open vent
safety pipe

750mm

Cold feed/
expansion pipe

H = 5.0m

To
pump

FLOW

RETURN

Shunt pump
(if required)

Note: Height, H, MUST be
increased if necessary to
comply with the min.
head required by the
pump manufacturer

BOILER

This diagram does not show safety valves & water
flow switches etc necessary for safe operation

Expansion

cistern

FAL7405

Boiler Output kW

Open Vent (mm)

Cold Feed (mm)

30 to 60

60 to 150

Expansion vessels used must comply with BS. 4814 and must
be sized on the basis of the total system volume and initial
charge pressure.

Initial minimum charge pressure should not be less than 0.5
bar (7.2psi) and must take account of the static head and
specification of the pressurising equipment. The maximum
water temperatures permissible at the point of minimum
pressure in the system are specified in Guidance Note PM5.

When make up water is not provided automatically it will be
necessary to fit controls which shut down the plant in the event
of the maximum system pressure approaching to within
0.35bar (5psi) of the safety valve setting.

other British Standards applicable to commercial sealed
systems are:

BS. 6880: Part 2
BS. 1212
BS. 6281: Part 1
BS. 6282: Part 1
BS. 6283: Part 4

Falcon GTE -

Installation & Servicing

GENERAL

SYSTEM DESIGN

Minimum Water Flow

Design Flow Rates
The following table gives the flow rate required for each boiler
based on a design temperature difference of 11

C (20

F) at the

maximum rated output. For hydraulic resistance see General
Data table (page 2).

Minimum Flow Rates
It may be necessary to fit a shunt pump to ensure minimum flow
rates.

Boiler Size (no of sections)

Normal water flow rate

l/s

1.09

1.39

1.69

2.00

2.21

temperature difference 11

C (20

F) g.p.m.

14.4

18.4

22.3

26.4

29.2

Minimum water flow rate

l/s

0.34

0.44

0.53

0.63

0.70

temperature difference 35

C (63

F) g.p.m.

4.5

5.8

7.0

8.3

9.3

System Design

Recommendations relating to water system design are
contained in BS. 5410: Part 2, BS. 6798 and BS. 6880.

System design must allow for adequate internal circulation
within the boiler and sufficient heat release from the boiler
body during and immediately after burner firing. Heating and/
or hot water controls should be interlocked electrically with the
burner, to prevent firing when the system does not demand
heat.

Depending on system design it may be necessary to interrupt
electrical supply to the burner before any mixing valves are
completely closed to the boiler flow. This will dissipate residual
heat. Also a pump overrun of at least 5 minutes is required on
plant shutdown to avoid interference trip out of the overheat
thermostat. If system return temperature remains below 30

for most of the heating period some protection from
condensation is required.

Please contact Caradon Ideal Limited for further information.

The example assumes flow rate required through
the DHW storage cylinder is less than that required
by the boiler. A combined shunt/DHW primary pump siz ed
on the minimum flow to be required MUST be fitted.
Provided adequate heat dissipation can be achieved at all
times the combined pump only may run on during the
overrun period - allowing the heating pump to switch off.
In order to achieve adequate heat dissipation into the DHW
storage cylinder, the diverter valve MUST always open
during the overrun period of 5 minutes.

Example A - Heating only utilizing a mixing valve

Example B - Combined domestic hot wat er and heating using a mixing valve

Example C - Combined domestic hot wat er using a divert er valve, and heating using a mixing valve

Shunt
pump

Mixing valve

Heating pump

Bypass

Load

A shunt pump sized on the minimum flow rate required
MUST be fitted. Both heating and shunt pumps MUST run
on during the overrun period of 5 minutes.
The mixing valve MUST NOT be capable of complete
closure to bypass, in order that residual heat can be
dissipated.

DHW
storage

DHW Primary pump

Shunt
pump

Heating

pump

Bypass

Mixing valve

A shunt pump sized on the minimum flow rate required
MUST be fitted. Provided adequate heat dissipation can be
achieved at all times the shunt and DHW primary pumps
only may run on during the overrun period of 5 mins -
allowing the heating pump to be switched off. This
example assumes the DHW primary pump flow rate
required is less than that required for the shunt pump.

Load

Diverting

valve

Combined shunt and
DHW primary pump

Shunt
bypass

Bypass

Heating pump

Load

Mixing valve

DHW

storage

Notes:

Minimum static head requirements with limit thermostat set at 100ºC (212ºF) : 2.5m.
The examples illustrated are intended as a general guide only.
Caradon Ideal Limited will be pleased to advise on specific applications.
Design and minimum flow rate tables are shown in this leaflet.

FAL5816

Falcon GTE -

Installation & Servicing

INSTALLATION

GTE 4

36-50

0.025

0.026

200

153

GTE 5

50-64

0.032

0.033

200

153

GTE 6

64-78

0.039

0.041

200

180

GTE 7

78-92

0.047

0.048

200

180

GTE 8

92-102

0.052

0.053

200

180

FLUING

According to the output, the difference between the
temperature of the flue gas and the ambient temperature can
be as low as 160

C. The installer will have to respect all of the

usual precautions (dilution - piping - T for removal of
condensation) in order to prevent deterioration of the chimney.

FLUE SIZE

Refer to applicable regulations while determining the size
and height of the flue. Please note that GTE boilers have
pressurised and sealed combination chambers and that the
pressure at the outlet must not exceed 0 mbar.

Detailed recommendations relating to the design of flues for
GAS fired appliances are quoted in BS. 6644 and IGE/UP/10,
whilst BS. 5410 Pt. 1 similarly applies to OIL fired boilers.

The table below contains the minimum dimensions of the
flue required for each boiler model in order to ensure
sufficient draught at the outlet.

(1) : at boiler maximum input.
(2) : Boiler temperature: 80

C (ambient temperature : 20

C).

However, care must be taken to comply with any applicable
national or local regulations.

10 DIMENSIONAL INFORMATION REQUIRED FOR THE FLUE CONNECTION

Connection

The connection must be made in a competent manner with
airtight pipe in a material that is resistant to hot gases from the
combustion and possible acid condensation. This pipe must
be as short as possible, be removable and without any
sudden change in its section.

The diameter must always be at least equal to that of the boiler
outlet.

Boiler

Heat

Output

Required

Draught

Mass Flow of Flue Gases

kg/s

Natural Gas

9% CO

Flue Gas

Temperature

(1) (2)

Chimney:

Minimum Recommended

Dimensions

mbar

Ø min

m m

Height

Fuel Oil

12% CO

fal5922

214

608

30-45

500 minimum

l
5926