REMEHA Gas 310 ECO Technical Information
Supplied By www.heating spares.co Tel. 0161 620 6677
Technical Information
Remeha Gas 310 ECO
• High effi ciency condensing
Remeha Gas 310 ECO
boiler with low NOX emission
• Heat outputs: 51 - 573 kW
1
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INHOUD
Preface 5
1 Safety instructions 6
1.1 Symbols 6
2 General description of boiler 7
3 Design 8
3.1 Boiler version 8
3.2 Operating principle 9
4 Technical data 10
4.1 Dimensions 10
4.2 Technical data 11
4.3 Quotation specification 12
4.4 Delivery options 12
4.5 Accessories 13
5 Efficiency information 14
5.1 Annual efficiency 14
5.2 Heat to water efficiency 14
5.3 Standing losses 14
6 Application data 14
7 Installation instructions for heating installer 15
7.1 General 15
7.2 Delivery and installation 15
7.3 Flue gas discharge and air supply 17
7.3.1 General 17
7.3.2 Classification due to discharging
flue gases 17
7.3.3 Connection options 17
7.3.4 Inlets/Outlets 17
7.3.5 Other requirements 17
7.3.6 Single boiler conventional flue 18
7.3.7 Single boiler, room sealed flue 18
7.3.8 Different pressure zones 20
7.3.9 Header flue systems 20
7.4 Installation details 20
7.4.1 Water pressure 20
7.4.2 Condensate discharge 20
7.4.3 Water treatment 20
7.4.4 Safety valve 21
7.4.5 Water circulation 21
7.4.6 Thermostat pocket 21
7.4.7 Noise production 21
7.5 Multiple boiler installation 21
8 Installation instructions for ELECTRICAL
installer 24
8.1 General 24
8.2 Electrical specifications 24
8.2.1 Mains voltage 24
8.2.2 Control unit 24
8.2.3 Power consumption 24
8.2.4 Fuse ratings 24
8.2.5 Temperature control 25
8.2.6 Low water level protection
(flow and content) 25
8.2.7 High limit protection 25
8.2.8 Air pressure differential
sensor (LDS) 25
8.3 Connections 26
8.4 Wiring diagram 27
8.5 Switch sequence diagram 27
8.6 Boiler control 27
8.6.1 Introduction 27
8.6.2 Modulating controls general
(two wire control) 28
8.6.3 BMS Analog control
(0-10 Volt DC) 28
8.6.4 On/ off control (1 x no volt
switched pair) 28
8.6.5 High/ low control (2 x no volt
switched pairs) 29
8.7 Other inputs 29
8.7.1 Shut down input 29
8.7.2 Lock-out input 29
8.7.3 External interlock 29
8.7.4 Other outputs 29
8.7.5 Analog output Depending on the
option settings in the service level
(see section 13.2.13), the analog
output signal is able to transmit
the following values: 29
8.7.6 Operation signal 29
8.7.7 Common alarm (lock-out) 29
8.7.8 External gas valve control 29
8.8 Options/ accessories 30
8.8.1 System pressure sensor 30
8.8.2 Gas valve leak proving system
(VPS) 30
8.8.3 Minimum gas pressure switch 30
8.8.4 Flue gas damper 30
8.8.5 Return butterfly valve (not Broag
supply) 30
8.9 Other connections 30
8.9.1 Boiler or System pump control 30
8.9.2 Frost protection 30
3
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Remeha Gas 310 ECO
9 Installation instructions for gas installer 31
9.1 Gas connection 31
9.2 Gas pressures 31
9.3 Gas/ air ratio control 31
10 Commissioning 31
10.1 Initial lighting 31
10.2 Shutdown 33
11 control and safety equipment 34
11.1 General 34
11.1.1 Instrument panel layout 34
11.1.2 LED indicators 35
11.2 Switch function keys 35
11.2.1 Manual/automatic operation 35
11.2.2 Forced mode ‘high’ (h [[) 35
11.2.3 Forced mode ‘low’ (l [[) 35
11.3 Display of values 35
12 Operating mode 36
12.1 Operating mode (x [[) 36
12.2 Read-out mode (X [[) 36
12.3 Control strategy c 37
12.4 Shut-off (b xx) 37
12.4.1 Shut-off 37
12.4.2 Shut-off mode 37
12.5 Counter mode (1, , and .)
(service level) 38
12.5.1 General 38
12.5.2 Reading out counter mode 38
13 Setting mode 39
13.1 User level setting mode (X [[) 39
13.1.1 Flow temperature (!) 39
13.1.2 Pump run on time (@) 40
13.1.3 Boiler control (A) 40
13.2 Setting mode service level (only for
the qualified service engineer) (X [[) 40
13.2.1 Minimum fan speed ($ and 5) 42
13.2.2 Maximum fan speed (^ and 7) 42
13.2.3 Forced part load time (*) 42
13.2.4 Cycling prevention delay
time (() 42
13.2.5 Required flow temperature
at 0 - 10 volts (a and B) 42
13.2.6 High operation signal
switch point (C) 42
13.2.7 Shunt pump post-circulation
time (D) 42
13.2.8 dT from control stop point to
start point (E) 42
13.2.9 Maximum flue gas tempera ture (F) 42
13.2.10 Maximum temperature
setting (G) 42
13.2.11 Modulation start point at dT (H) 43
13.2.12 Minimum water pressure (I) 43
13.2.13 Adjustments options/ acces sories (J) 43
13.2.14 “Low” speed with H/L control (L) 43
13.2.15 Boiler type (P) 43
14 Fault-finding 44
14.1 General 44
14.2Failure mode (1 [[) (service level) 44
14.3 Cooling mode 44
14.4 Summary of failures (lock-out) 44
15 Inspection and maintenance instructions 48
15.1 General 48
15.2 Cooling mode 48
15.3 Annual Inspection 48
15.4 Maintenance 48
15.4.1 Inspection of air box and dirt trap 49
15.4.2 Cleaning the non return valve 49
15.4.3 Cleaning the venturi 49
15.4.4 Cleaning the fan 49
15.4.6 Cleaning the burner assembly 50
15.4.5 Cleaning the heat exchanger 50
15.4.7 Cleaning the condensate collector 50
15.4.8 Cleaning the syphon 50
15.4.10 Cleaning the inspection glass 51
15.4.9 Cleaning/Replacing the Ignition/
Ionisation electrode 51
15.5 Exploded view and spare parts list 52
16 appendices 55
16.1 Control menu 55
16.2 Shut-off codes 56
4
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PREFACE
Read these instructions carefully before putting the
boiler into operation, familiarise yourself with its control
functions, operation and strictly observe the instructions
given. Failure to do so may invalidate warranty or prevent the boiler from operating.
The installation and commissioning of the boiler must be
carried out by a competent Engineer, with the relevant
certification i.e.: CORGI, ACOPS, IEE regs. On completion a copy of the commissioning sheet should be
returned to Broag Ltd. for record purposes.
If you have any questions, or if you need more information about specific subjects relating to this boiler or its
installation please do not hesitate to contact us.
The data published in these technical instructions is
based on the latest information (at date of publication)
and may be subject to revisions.
We reserve the right to continuous development in both
design and manufacture, therefore any changes to the
technology employed may not be retrospective nor may
we be obliged to adjust earlier supplies accordingly.
fig. 01 Artist impression Gas 310 ECO
3D.AL.31H.000.S.01
5
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1 SAFETY INSTRUCTIONS
Remeha Gas 310 ECO
1.1 Symbols
The following symbols are used in this document to
emphasise certain instructions. This is in order to
increase your personal safety and to safeguard the technical reliability of the boiler.
g Instructions must be followed closely to avoid
personal injury or serious damage to the unit or the
environment.
g Important!! Instructions are of essential
importance for the correct functioning of the unit.
w Indicates possible danger of electric shock. Seri-
ous personal injury may occur.
i Instructions contain useful information.
Read and familiarise yourself with these instructions.
General Instructions
Keep unauthorised personnel away from the boiler. Do
not place objects on or against the boiler. Do not touch
hot water connections or the flue outlet when the boiler
is operating – burn hazard.
w Danger
This boiler is connected to a 230v mains supply. An
improper installation or attempts to repair electrical components or controls may result in life threatening situations.
g Be aware of gas escapes
If you smell gas, close the (main) gas cock and contact
the emergency gas leak telephone number for your
area. DO NOT ISOLATE THE POWER SUPPLY TO
THE BOILER OR ANY OTHER APPLIANCE.
g Be aware of flue gas leaks
If you smell flue gas fumes, turn the boiler off and contact your service company or installer.
g Be aware of water leaks
If you see water leaking from the boiler, turn it off and
contact your Service Company or installer.
g Working on the boiler
Installation, commissioning, maintenance and repair
work must only be carried out by suitably qualified specialist. Engineer in accordance with all relevant national/
local standards and certifications.
Always disconnect the mains supply and close the main
gas cock before working on the boiler.
Casing panels should only be removed for maintenance and servicing purposes.
Refit all panels on completion of maintenance or servicing before putting the boiler back into service.
Instruction and warning labels on the boiler must
never be removed or covered and must be clearly legible throughout the entire service life of the boiler. Damaged or illegible instruction and warning labels must be
replaced immediately.
Generally applicable safety instructions related to accident prevention must be consulted in addition to the
information supplied in this technical documentation.
Boiler modifications and spare parts
The boiler must not be modified or non-Remeha spare
parts fitted without the express written approval of
Remeha.
6
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2 GENERAL DESCRIPTION OF BOILER
The Remeha Gas 310 ECO boiler is a fully assembled,
free standing, gas fired (Natural gas only), fully modulating high efficiency condensing boiler and is supplied
plastic wrapped, crated on a pallet.
The sectional cast aluminium heat exchanger and other
major components are contained within a rigid steel
frame with removable casing parts for maintenance
purposes. The Gas 310 ECO frame is fitted with a set
of casters to enable the assembled unit to be easily
manoeuvred into position within the plant room on site
with the minimum of effort. All major electrical and electronic controls are contained within the instrument panel
mounted on top of the boiler at the opposite end to the
connections facing to the front (long side) but can be
o
rotated 90
towards the short side to suit site location.
The boiler is available with flow and return connections
on the left or right hand end of the boiler (THIS MUST
BE DECIDED AT TIME OF ORDER), with the gas connection on the top of the boiler. The flue gas outlet c/w a
condensate connection will be at low level on the same
side as the connections. Combustion air inlet (for room
sealed operation) is located at the top of the boiler.
The boiler is suitable for room sealed or open flue
applications and has been designed for central heating and indirect hot water production at working pressures not exceeding 6 bar. It must be installed on a fully
pumped system and is designed for operating pressures
between 0.8 and 6 bar.
The pre-mix gas burner (NG only) with its gas/ air ratio
control system ensures clean, trouble free operation
with higher than average efficiencies of up to 109% Hi
(NCV) in the condensing mode combined with ultra low
NOx and minimum CO emissions.
The standard control package allows for external On/
Off, High Low (volt free switch/s) or modulating control
(0-10V input). The built in digital display shows normal
operating/ fault code indication and allows actual and
set values to be read and adjusted.
The intelligent, advanced boiler control (‘abc®’) continuously monitors the boiler operating conditions, varying
the heat output to suit the system load. The control is
able to react to external “negative” influences in the
rest of the system (flow rates, air/ gas supply problems)
maintaining boiler output for as long as possible without resorting to a lock out condition. At worst the boiler
will reduce its output and/ or shut down (shut off mode)
awaiting the “negative” conditions to return to normal
before re-starting.
The ‘abc®’ control cannot override the standard flame
safety controls.
All Gas 310 boilers are live fired after assembly to
ensure the boiler and controls comply with our strict
quality policy.
The unit has been inspected for compliance with the
essential requirements of the following directives:
- Gas Appliances Directive, no. 90/ 396/ EEC
- Efficiency Directive, no. 92/ 42/ EEC
- EMC Directive, no. 89/ 336/ EEC
- Electrical Low Voltage Directive, no. 73/ 23/ EEC
- Pressure Equipment Directive, no. 97/ 23/ EEC,
art. 3, item 3
CE identification number (PIN) : 0063BP3474
NOX Class : 5
Type classification of flue gas discharg : B23, C33,
C43, C53, C63, C83
7
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3 DESIGN
3.1 Boiler version
Remeha Gas 310 ECO
fig. 02 Cross-section Remeha Gas 310 ECO (Left
hand boiler illustrated)
00.31H.79.00002
The service side of the boiler (with the heat exchanger
inspection cover) is the front.
1. Pressure gauge
2. Pocket for external temperature sensor (7mm i/d
plain pocket)
3. Flow connection
4. 2nd Return connection (Optional)
5. Return connection
6. Filling/ drain cock
7. Condensate collector
8. Flue gas temperature sensor
9. Condensate drain
10. O2/ CO2 measuring point
11. Positioning wheels
12. Jacking bolts
13. Condensate drain hose
14. Flue gas discharge
15. Inspection hatch
16. Adapter ø 250/ ø 200 (optional)
17. Heat exchanger
18. Flow temperature sensor
19. Air supply
20. Adapter ø 200/ ø 250 (optional)
21. Air supply grille
22. Gas connection
23. Inspection glass
24. Ignition/ionisation electrode
25. Return temperature sensor
26. Boiler block temperature sensor
27. Frame
28. Steering castor
29. Fan
30. Venturi
31. Gas valve multiblock
32. Non return valve
33. Gas filter
34. Air pressure differential sensor (LDS)
35. Air box
36. Instrument panel
37. Control keys
38. Read-out window
39. Weather compensator installation (optional)
40. On/ off switch
8
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3.2 Operating principle
Combustion air is drawn into the inlet connection from
the plant room (room ventilated version) or from outside
via the eccentric flue system (room sealed) by an air
supply fan.
On the inlet side of the fan is a specially designed
chamber (venturi unit) which takes gas from the multiblock and mixes it in the correct proportions with the
incoming air. This mixing system ensures that the correct gas/ air ratio is delivered to the pre-mix burner at all
times.
Depending on demand (under the dictates of flow/return
sensor and other external/internal control inputs) the
®
’ system determines the required boiler output.
‘abc
The ‘abc®’ control then varies the speed of the air supply fan which alters the volume of air being drawn into
the venturi, this change in volume is measured using air
pressure differential which directly controls the volume
of gas also being delivered to the venturi. The resultant
controlled mixture is delivered to the premix burner.
This mixture is initially ignited by the combined ignition/
ionisation probe, which monitors the state of the flame.
Should the flame be unstable or not ignite within the
pre-set safety time cycle the controls will (after 5
attempts) shut the boiler down requiring manual intervention to reset the boiler. The digital display will indicate a flashing fault code confirming the reason for the
failure.
The products of combustion in the form of hot flue gases
are forced through the heat exchanger transferring their
heat to the system water, (the flue gas temperature is
reduced to approximately 5/ 8° above the temperature
of the system return water) then discharged via the condensate collector, to the flue gas outlet connection, to
atmosphere.
Because of the low flue gas exit temperature there will
be a vapour cloud formed at the flue gas terminal -this
is not smoke-, simply water vapour formed during the
combustion process.
If the flue gas temperature falls below dew point (55°),
water vapour (created during the combustion process)
will begin to condense out in the boiler, transferring its
latent heat into the system water, thereby increasing the
output of the boiler without increasing the gas consumption.
Condensation formed within the boiler and flue system
is discharged from the boiler to an external drain via the
drain pan and siphon supplied.
The boiler can be supplied, as an option with a
second (constant temperature) return connection. This
additional connection enables the boiler to make full use
of its condensing ability whilst accepting both fixed and
variable temperature returns from the same system.
9
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4 TECHNICAL DATA
4.1 Dimensions
Remeha Gas 310 ECO
fig. 03 Elevation drawings (left-hand version shown)
04.31H.79.00002
É Flow connection NW 80, DIN 2576
Ê Return connection NW 80, DIN 2576
Ï Gas connection 2” BSP (F)
Ò Condensate drain 1 ¼” nb plastic waste
Ñ Flue gas discharge 250 mm i/d
Ð Combustion air supply 250 mm i/d
Ì Second return connection
(optional) NW 65, DIN 2576
Boiler type A B C E L
5 sections 1600 1463 1590 1004 1312
6 sections 1600 1463 1590 901 1312
7 sections 1990 1853 1980 1110 1702
8 sections 1990 1853 1980 1007 1702
9 sections 1990 1853 1980 904 1702
table 01 Dimensions in mm
10
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4.2 Technical data
Boiler type Unit
5 sections 6 sections 7 sections 8 sections 9 sections
Remeha Gas 310 ECO
General
Boiler control options - Modulating, high/ low or on/ off
Nominal output Pn (80/ 60°)
min kW 51 65 79 92 106
max kW 261 327 395 462 531
Nominal output Pn (50/ 30°)
min kW 56 71 84 98 113
max kW 282 353 427 499 573
Nominal input Qn (GCV/ Hs) min kW 60 75 91 105 121
max kW 298 372 448 523 598
Nominal input Qn (NCV/ Hi) min kW 54 68 82 95 109
max kW 269 336 404 471 539
Efficiency (Hi)
Combustion (Hi) at 80/ 60°
Heat to water (Hi) at 80/ 60°
Standing losses (T
average
= 45°)
% up to 99
% up to 98,5
% < 0.3
Annual efficiency (Hi) % 108,9
Gas and flue gas side
Gas category - Natural gas only
Inlet pressure gas (boiler running) min mbar 17
max mbar 100
3
Gas consumption m
emission (annual emissions) mg/ kWh < 60
NO
X
emission
NO
X
(annual emissions, O
= 0%, dry)
2
/ h 2936435057
0
ppm < 35
Residual fan duty Pa 150 150 150 150 150
Flue gas mass min kg/ h 91 114 138 160 183
max kg/ h 453 565 680 793 907
Flue gas temperature at 80/ 60°
Type classification due to discharging flue
gasses
min
°
max
°
- B23, C33, C43, C53, C63, C83
57
65
Water side
High limit temperature
Flow temperature operating
°
°
110
20 - 90
Operating pressure min bar 0.8
max PMS bar 6
Water contents litres 49 60 71 82 93
Water resistance at 11° dT
Water resistance at 20° dT
mbar (kPa) 374 (37.4) 364 (36.4) 397 (39.7) 364 (36.4) 413 (41.3)
mbar (kPa) 113 (11.3) 110 (11) 120 (12) 110 (11) 125 (12.5)
Electrical
Mains supply V/Hz 230/ 50
Power consumption min Watt 12 12 12 12 12
max Watt 303 340 470 600 858
Insulation class IP 20
Other
Weight dry kg 360 410 460 510 560
Floor area m
Noise level at a distance of 1 m from the
boiler (average)
2
1.2 1.2 1.4 1.4 1.4
dB(A) 60
Colour of casing RAL 2002 (red); 9023 (grey)
table 02 Technical data Remeha Gas 310 ECO
11
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Remeha Gas 310 ECO
4.3 Quotation specification
- Cast aluminium - sectional pre-mix gas fired fully
condensing, modulating floor standing boiler
- Sectional heat exchanger manufactured from cast
aluminium
- Maximum operating pressure of 6 bar
- Maximum operating temperature of 90°C
- Ultra low NOx (max. 35 ppm at 0% O
)
2
- Pre-mix, fully modulating (20-100%) gas burner with
unique gas/ air ratio control for maximum efficiency
- Intelligent advanced boiler control ‘abc®’ c/w a compre-
hensive operating, service and fault diagnostic facility
- No minimum flow requirement (see section 7.4.5)
- Available as conventional flue or room sealed operation
- Capable of remote BMS control (0 -10V modulating,
on/ off or high/ low option)
- Socket for advanced service diagnostics (for PC/ PDA
connection)
- Supplied fully factory assembled and tested
- Powder coated enamel steel casing BS; RAL colour:
2002 (red); 9023 (grey)
- Rigid steel box frame
- Suitable for use with Natural gas only
- Supplied as standard with on/ off switch, temperature
indication, flow, return, heat exchanger block and flue
gas sensors
- Supplied as standard with indicating module No. 1
lock-out indication (Volt free), shut down indication
(Volt free), boiler on indication (24 Volt AC)
- Efficiencies up to 109% (NCV/ Hi)
- Manufactured to ISO 9001
- CE approved
4.4 Delivery options
Available in 5 section sizes, in “left-hand” or “right-hand”
versions each with 2 instrument panel positions:
Gas 310 ECO
Execution ‘left-hand’
fig. 04 Installation options
04.31H.79.00004
I = Front (service side)
A = Short side (alternative orientation of the instrument
panel)
The service side with the inspection cover on the heat
exchanger is considered to be the front of the boiler.
With a “left-hand” version, the flow, return and flue
connections are on the left of the boiler as you face
the front (service side). On a “right-hand” version, the
flow, return and flue connections are on the right of the
boiler as you face the front (service side). The boiler
instrument panel can be rotated to face the front or the
short side of the boiler (front will be standard unless
stated on the purchase order) (see fig. 04).
12
Gas 310 ECO
Execution ‘right-hand’
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g Important!!
When ordering a Remeha Gas 310 ECO, it is essential
that the number of sections and whether a “left-hand”
or “right-hand” connection version is required as well
as the orientation of the instrument panel (short or front
side).
4.5 Accessories
- Modulating “OpenTherm” weather compensators,
‘’Open Therm’’ for single or rematic®’ for multi boiler
configurations
- Second return connection
- System pressure sensor
- Flue adapter 250mm to 200mm i/d (stainless steel)
- Air supply adapter 250mm to 200mm i/d (stainless
steel)
- Vertical room sealed terminal VRS 200/300 or VRS
250/350
- Condensate neutralisation box
- Condensate neutralisation granules
- Recom communication set with CD-ROM, interface
and wiring
- Interfaces for communication with various controllers
(see section 8.6)
- Gas leak proving control
- Minimum gas pressure switch
- Automatic flue gas damper for pressurised flue system
- Cleaning tools
13
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5 EFFICIENCY INFORMATION
5.1 Annual efficiency
Up to 108.9% at Hi (up to 97% at Hs) at an average
water temperature of 40°C (50/ 30°C).
5.2 Heat to water efficiency
a. Up to 98.5% at Hi (88% at Hs) at an average water
temperature of 70°C (80/ 60ºC).
b. Up to 106.4% at Hi (98% at Hs) at an average water
temperature of 40° (50/ 30°).
5.3 Standing losses
Less then 0.3% at Hi (0.33% at Hs) at an average water
temperature of 45°C
Note: NCV = Hi, GCV = Hs
6 APPLICATION DATA
Remeha Gas 310 ECO
The Gas 310 ECO can be used on all new and refurbishment projects in both single and multiple configurations. Conventional and room sealed flue system
capability means that the boiler can be sited almost anywhere within a building.
The Remeha rematic® and “OpenTherm” weather compensators (option) are able to communicate directly with
the boiler/s controls to make full use of their fully modulating features, ensuring that the boiler closely matches
the system demand at all times.
External control systems (BMS) can be interfaced with
the boiler to provide on/ off - high/ low or modulating (0
-10V) control options.
14
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7 INSTALLATION INSTRUCTIONS FOR HEATING INSTALLER
7.1 General
All gas appliances must, by law, be installed by competent persons (e.g. Corgi registered). Failure to install
appliances correctly could lead to prosecution.
It is in your own interest and that of safety to ensure that
the law is complied with.
The following instructions must be adhered to when the
Remeha Gas 310 ECO is installed:
- Gas Safety (Installation and Use) Regulations 1984
(as amended).
In addition to the above regulations, this boiler must be
installed in compliance with:
- Current I.E.E. Regulations for electrical installations
- Local building regulations
- The Building Standards (Scotland)
- (Consolidation) Regulations
- By-laws of the local water undertaking
- Health and Safety Document No 635 ‘The Electricity
at Work Regulations 1989’
It should also be in accordance with the relevant recommendations in the current edition of the following British
Standards and Codes of Practice, viz. BS 6644, BS5978
Part 1 & 2, BS 5449, BS 5446, BS 6798, BS 6891 and
BG DM2.
Important:
The Remeha Gas 310 ECO is a CE certified boiler and
must not be modified or installed in any way contrary to
these “Installation and Maintenance Instructions”.
Manufacturers Instructions must NOT be taken as overriding statutory obligations.
Once in position the boiler is fixed into position using the
fitted jacking bolts which both raise the wheels of the
ground and level the boiler. Technical documentation is
supplied with the boiler in a holder on the inside of the
boiler casing (beneath the instrument panel). A number
of small loose components, such as the 4 support pads
and the syphon for the boiler have been placed in the
flue gas discharge.
It is advisable (preferable) to install the Remeha Gas
310 ECO as follows:
- Place the crate c/w the boiler in the boiler room. Make
sure there is enough room at one end of the crate for
the boiler and ramp and clearance for the crate to be
removed (at least 3 M).
g Important!! Always transport the boiler in
the protective packaging wherever possible.
- Remove fixing strips, packaging lid and all other
packaging leaving the boiler on the pallet.
- Place the packaging lid on the end of the pallet (creating a ramp - secure with screw).
- Roll the boiler on its wheels off the pallet down the
ramp to the boiler room floor.
g WARNING! Use retaining straps to control
the rate of travel - Do not stand in front of the boiler!
- Manoeuvre the boiler to required final position.
i The pallet lid can be used as a rocking ramp to
convey the boiler over obstacles, such as thresholds
etc.
7.2 Delivery and installation
The Remeha Gas 310 ECO is supplied fully assembled
plastic wrapped and packed in a crate on a pallet.
The overall dimensions of the crate are 80 cm wide and
175 cm high with the length dependant on the number
of sections (5 & 6 sections: 170 cm, 7 to 9 sections:
209 cm). The base of the packaging is a 76-cm wide
pallet to enable it to be transported with a pallet truck,
forklift truck or 4-wheel transport boards.
Excluding the crate the boiler is 72-cm wide c/w casing panels and 70 cm without casing and will fit through
most standard doors (minimum door opening width 80
cm). The boiler itself has wheels so that, once the packaging has been removed, it can easily be moved around
on a smooth surface. The packaging lid includes a rocking ramp, which can be used to negotiate obstacles
such as doorsteps and small plinths.
g Important!! The wheels are designed for
transport purposes only and MUST NOT be used when
the boiler is in its final position!
- Place the 4 support pads under the adjustment bolts.
- Use the adjusting bolts to jack up the boiler lifting it
clear of the wheels and with the top of the condensate collector level.
- Fit the siphon assembly.
Use the plastic packaging to protect the boiler until
required for use.
g Important!! Additional protection may be
required if site conditions warrant it – overhead builders
working, insulation etc.
15
Supplied By www.heating spares.co Tel. 0161 620 6677
Remeha Gas 310 ECO
fig. 05 Layout in the boiler room
04.31H.79.00005
* Free space 800 mm, if instrument panel is facing the
short side.
Number of sections C in mm
5 1590
6 1590
7 1980
8 1980
9 1980
Clearance of at least 800mm is required at the front
(service side) of the boiler. However, we recommend a
clearance of 1 m. A clearance of at least 400mm above
the boiler, at least 300mm on both ends (800mm if the
instrument panel is rotated to face the short end).
fig. 06 shows the boiler’s support area including the
position of the support pads (shaded boxes) supplied.
fig. 06 Support area Remeha Gas 310 ECO
00.31H.79.00005
Number of sec-
tions
C in mm D in mm
5 1590 1118
6 1590 1118
7 1980 1508
8 1980 1508
9 1980 1508
table 03 longitudinal dimensions
16
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7.3 Flue gas discharge and air supply
7.3.1 General
The Remeha Gas 310 ECO is suitable for both conventional room ventilated or eccentric room sealed operation. Room sealed terminals should comply with the
Gastec QA-requirements for vertical outlet constructions.
Any horizontal pipework in the flue gas discharge system should slope towards the boiler with a drain connection positioned approx. 300mm from the boiler connection. Horizontal pipework in the air supply system should
slope towards the supply opening and may require a
drain point at the low point.
Care should be taken when siting flue exit positions as
a vapour plume will be visible when the boiler is operational (flue gas temperature will be less than < 77°
resulting in the water vapour condensing out on contact
with the air).
7.3.2 Classification due to discharging flue gases
Classification according to CE:
Type B23: Conventional room ventilated appliance without draft diverter. Air supply from boiler room; flue gas
discharge on roof.
Type C33: Room sealed appliance, connected to combined roof outlet.
Type C43: Room sealed appliance in cascade configuration, connected via two ducts to a common duct system serving more than one appliance.
Type C53: Room sealed appliance, connected to separate ducts for the air supply and flue gas discharge, terminated in zones of different pressure.
Type C63: Room sealed appliance, supplied without the
terminal or the air supply and flue gas discharge ducts.
Type C83: Boiler with room sealed operation, connected
to separate air supply and flue gas discharge duct, with
flue gas discharge duct always in depression.
Note: The boilers can also be installed on a flue dilution system, but must incorporate a total flue break to
avoid boiler gas/air ratio controls being affected by the
flue dilution fan pressures. For full details please contact
Broag.
A table showing maximum air supply/ flue gas discharge
lengths for the room sealed version of the Remeha Gas
310 ECO can be found in section 7.3.7.
7.3.3 Connection options
The Remeha Gas 310 ECO is available in a room ventilated and a room sealed version. If the room-sealed version is used, the grille must be removed before installing
the air supply pipe.
7.3.4 Inlets/Outlets
For conventional flue systems the flue terminal exit point
should discharge vertically and be c/w a tapered cone
and bird guard. For room sealed options use the Broag
VRS terminals.
7.3.5 Other requirements
Flue gas discharge materials:
Single wall, rigid: stainless steel, thick-walled aluminium
(to comply with building regulations).
Flexible: stainless steel
(to comply with building regulations).
Flue gas discharge structure:
The flue gas discharge pipe must have airtight and
watertight joints and connections, or should be seamless. Horizontal sections in the flue gas discharge pipe
must slope down towards the boiler (at least 5-cm per
meter) and incorporate a drain point within 300mm of
the boiler connection.
Conventional flue or room ventilated installations:
A room-ventilated boiler takes the required combustion
air from the plant room. Combustion air for the boiler
must be provided to the room/ compartment in accordance with BS 6644. A table showing the maximum
discharge lengths for the room ventilated version of the
Remeha Gas 310 ECO can be found in section 7.3.6.
Room sealed installations:
It is unnecessary to provide separate combustion air to
the room/compartment as this is supplied direct to the
boiler via the eccentric flue and air inlet system to the
vertical terminal unit (see 0, VRS 200/250 options available from Broag).
Additional ventilation will be required to the room/
compartment in accordance with BS 6644 (compartment ventilation). For installations where supply and discharge points are in two different pressure zones CLV
system please contact Broag Technical Dept. for further
details and advice.
Flue liners:
If flue liners are used they must be manufactured from
gas and water tight airtight, thick-walled rigid aluminium
or stainless steel (flexible plastic (with a continuous
operating temperature rating of 120°) and stainless
steel pipe liners are also acceptable provided they are
water and gas tight).
Air supply materials:
Single wall, rigid or flexible: aluminium, stainless steel.
Air supply structure:
The air supply pipe must also be airtight. Horizontal sections in the air supply must slope away from the boiler
towards the supply opening and incorporate a drain connection if the route rises from a lower point that could
flood.
17
Supplied By www.heating spares.co Tel. 0161 620 6677
Remeha Gas 310 ECO
7.3.6 Single boiler conventional flue
fig. 07 Flue gas discharge duct without bends, single
boiler, conventional flue.
00.31H.79.00011 (afb 1)
7.3.7 Single boiler, room sealed flue
fig. 08 Flue gas discharge duct without bends, single
boiler, room sealed application.
00.31H.79.00011 (nr 6)
Flue diameter 200 mm * 250 mm
sections
Model Gas 310 ECO
56789
max eq. length
L
m 103 65 145 105 78
bend 45°, R=D m 1.6 2
bend 90°, R=D m 2.8 3.5
table 04 Calculation data conventional flue
* When flue gas discharge pipes with a diameter of 200
mm are used, an optional adapter is required for connection to the Remeha Gas 310 ECO from ø 250 - ø
200 mm.
Example: Gas 310 ECO, 6 sections, total length 27 m,
diameter 200 mm, 2 bends 90°.
27 m + 2 x 2.8 = 32.6 < 65 m → flue OK.
Note: If the design parameters are outside the values shown in the above table or there is any doubt
over the flue system, please contact our technical
department for calculation to be undertaken.
Flue/ air inlet diameter
250/ 250 mm
sections
Model Gas 310 ECO
56789
max eq. length
L
m 172 108 71 49 34
bend 45°, R=D m 2
bend 90°, R=D m 3.5
table 05 Calculation data room sealed applications
Example:
Gas 310 ECO, 8 sections, total length flue and air inlet
each 32 m, each 2 bends 90°.
32 m + 2 x 3.5 = 39.0 < 49 m; flue and air inlet OK.
Note: If the design parameters are outside the values shown in the above table or there is any doubt
over the flue system, please contact our technical
department for calculation to be undertaken.
Combined vertical terminal sets, and roof sealing plates
for flat roofs, are available for the room-sealed version
with diameters of ø 200 and ø 250 in accordance with
the drawings below.
18
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fig. 09 Vertical terminal for room sealed operation
pdf
Number of
sections
L E Ø D G* H Ød1 Ød2 ØD 3 ØD 4
mm mm mm mm mm mm mm mm mm
7 0 450 200 0 2350 300 320 318 640
9 30 550 200 130 2350 300 320 318 640
11 200 720 200 300 2350 300 320 318 640
13 260 820 250 360 2500 350 370 368 690
15 360 920 250 460 2500 350 370 368 690
17 500 1060 250 600 2500 350 370 368 690
19 600 1160 250 700 2500 350 370 368 690
* Correct lengths for 11 and 19 sections; for the 9, 13, 15 and 17 sections, the pipe supplied must be shortened.
This pipe is not suitable for the 7 section boiler.
19
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