REMEHA GAS 310 ECO PRO User manual

GAS 310/610
ECO PRO

WHAT’S
INSIDE
03 WELCOME TO REMEHA
03 INTRODUCING THE REMEHA
GAS 310/610 ECO PRO RANGE
04 TYPICAL BOILER
CONSTRUCTION
07 OPERATING PRINCIPLE
08 TECHNICAL INFORMATION
12 ENGINEERING SPECIFICATION
14 BOILER DIMENSIONS
19 SPACE SAVING
CONFIGURATIONS
20 MAINTENANCE AREAS
22 T YPICAL IN STA LL ATI ON
23 ELECTRICAL CONNECTIONS
AND CONTROLS
24 WIRING LAYOUT
25 SAFETY INTERLOCKS
26 BOILER CONTROLS
28 FLUE DATA
31 TECHNICAL SUPPORT
31 DECLARATION OF COMPLIANCE

FEATURES
AND BENEFITS
INTRODUCING THE
REMEHA GAS 310/610
ECO PRO RANGE
The Gas 310/610 Eco Pro range features
compact, floor-standing, gas-fired, high
efficiency condensing boilers (available in five
to ten section models from 285 to 1300 kW).
Their small footprint and ability to be installed side-to-side makes
them ideally suited for modular configuration while the secondary
return feature makes this boiler suitable for use with both CT and
VT circuits. An optional optimising weather compensating control
package can also ensure maximum efficiency.
These boilers are suitable for both new and retrofit applications.
With conventional and room-sealed capability, they can be
installed in most situations.
Integral flue gas non-return valve Multiple flues can use the same riser
without risk of cross contamination
High efficiency boiler-up to
96.64% GCV Higher than average energy-savings
Compact, lightweight construction
Easy to install in smaller spaces;
particularly suitable for retrofit applications
Easy disassembly/reassembly
and has integrated wheels
Improved ease of installation especially
where access is restricted
Ultra-low Class 5 NOxemission levels
of 36mg/kWh 0% 02dry and under
Low pollutant emissions that meet
environmental regulations including
BREEAM, and Clean Air Act
Pre-mix down-firing gas burner, one-
piece cast aluminium heat exchanger
with ultra-low NOxemissions
Clean, trouble-free operation
and optimum combustion
Digital diagnostic display
and remote signalling options Easy maintenance
Remeha’s boiler control includes:
•modulating 18-100%
•compatible with OT Open Therm
•0-10V or volt free
Built-in flexibility for easy installation
and efficient, reliable heat delivery
Optional secondary return kit For use with both CT and VT circuits
Quiet operation ≤68 dB(A) Improved comfort
Left or right hand version
(Gas 310 Eco Pro)
Greater flexibility of
plant room planning
03
GAS 310/610
ECO PRO RANGE
WELCOME TO REMEHA,
THE EXPERT CHOICE
WE LEAD THE WAY IN INNOVATION, RELIABILITY AND EFFICIENCY
FOR ADVANCED COMMERCIAL HEATING SOLUTIONS.
We’re completely focused on commercial heating solutions
and are at the forefront of condensing gas boiler technology
– we don’t manufacture boilers for anyone else.
We invest heavily in research and development which enables
our specialist teams to design high performance products at
every level. From using the latest materials and manufacturing
techniques to meticulously designing and engineering each boiler,
we ensure they’re efficient to specify, install, run and maintain.
All our boilers share the same simple design – so
they’re expandable, adaptable and future-proofed.
We’ve tried to think of everything, so from specification to
blueprint sign-off through to supply and installation, our customer
service and product support is our number one priority.

KEY
1Flow connection 14 Air inlet 27 Gas connection
2Air differential pressure switch 15 Burner 28 Gas pressure measurement point
3 Flue gas discharge pipe 16 Adapter 29 Control panel
4Return connection 17 Ignition/ionisation electrode 30 Location for optional features
or a control unit
5 Outlet for measuring combustion gases 18 Heat exchanger 31 Gas pressure measurement point
6 Flue gas thermostat (option) 19 Inspection hatch 32 Sight glass
7 Condensate collector sealant cap 20 Heat exchanger sensor 33 Flue gas non-return valve
8Pivoting castor 21 Return sensor 34 Fan
9Steadying jack 22 Gas filter 35 Extension piece
10 Base frame 23 Data plate 36 Venturi unit
11 Connection for second return (optional) 24 Siphon 37 Gas block
12 Heat exchanger insulation kit (option) 25 Fixed castor 38 Air inlet hose
13 Boiler casing 26 Jacking bolt 39 Document holder
TYPICAL GAS
310 ECO PRO
BOILER CONSTRUCTION

KEY
1Flow connection 14 Air inlet 27 Gas connection
2Air differential pressure switch 15 Burner 28 Gas pressure measurement point
3 Flue gas discharge pipe 16 Adapter 29 Control panel
4Return connection 17 Ignition/ionisation electrode 30 Location for optional features
or a control unit
5 Outlet for measuring combustion gases 18 Heat exchanger 31 Gas pressure measurement point
6 Flue gas thermostat (option) 19 Inspection hatch 32 Sight glass
7 Condensate collector sealant cap 20 Heat exchanger sensor 33 Flue gas non-return valve
8Pivoting castor 21 Return sensor 34 Fan
9Steadying jack 22 Gas filter 35 Extension piece
10 Base frame 23 Data plate 36 Venturi unit
11 Heat exchanger insulation kit (option) 24 Siphon 37 Gas block
12 Flue gas collector 25 Fixed castor 38 Air inlet hose
13 Boiler casing 26 Jacking bolt 39 Document holder
TYPICAL GAS
610 ECO PRO
BOILER CONSTRUCTION
05
TYPICAL BOILER
CONSTRUCTION

GAS 310/610 ECO PRO
OPERATING PRINCIPLE
Combustion air is drawn into the inlet connection from the plant room (conventionally flued)
or from outside via the concentric 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 ratio 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. The 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 pre-mix burner.
This mixture is initially ignited by the combined ignition/ionisation
probe, which monitors the state of the flame. If the flame is
unstable or doesn’t ignite within the pre-set safety time cycle,
the controls will, after five 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°C above the temperature of the system
return water) then discharged via the condensate collector, to
the flue gas outlet connection – and then into the atmosphere.
A vapour cloud will form at the flue gas terminal due to the
low flue gas exit temperature. When the flue gas temperature
falls below dew point (55°C), water vapour created during the
combustion process will begin to condense out in the boiler,
transferring its latent heat into the system water, 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.
07
OPERATING
PRINCIPLE

285/5 335/6 430/7 500/8 575/9 650/10
PERFORMANCE
Nominal heat output central heating
operation @ 80/60°C kW (min-max) 51-261 65-327 79-395 92-461 106-530 119-601
Nominal heat output central heating
operation @ 50/30°C kW (max) 279 350 425 497 574 651
Nominal input (Hi) (min-max) 54-266 68-333 82-402 95-469 109-539 122-610
EFFICIENCY
SBEM seasonal efficiency GCV 96.62% 96.64% 96.58% 96.09% 95.88% 95.75%
Efficiency – full load 100% NCV 98% 98.1% 98.2% 98.3% 98.4% 98.5%
Efficiency – part load 30% NCV 109.2% 109% 108.8% 108.6% 108.3% 108.1%
Seasonal space heating energy efficiency
@ 80/60°C (100% full load) GCV 88.2% 88.3% 88.4% N/a N/a N/a
Seasonal space heating energy efficiency
@ 50/30°C (30% part load) GCV 98.6% 98.6% 98.5% N/a N/a N/a
GAS
Standard fuel Natural gas Natural gas Natural gas Natural gas Natural gas Natural gas
Max gas consumption m3/h 28.1 35.2 42.5 49.6 57 64.6
Min/max gas inlet pressure mbar 17-30 17-30 17-10 0 17-100 17-100 17-30
Gas connection size BSP inches 2” (F) 2” (F) 2” (F) 2” (F) 2” (F) 2” (F)
Flame protection Ionisation Ionisation Ionisation Ionisation Ionisation Ionisation
Ignition Electronic Electronic Electronic Electronic Electronic Electronic
FLUE (SUPPLIED AS STANDARD FOR CONVENTIONAL FLUE, OPTION FOR ROOM-SEALED AVAILABLE)
Flue diameter mm I/D 250 250 250 250 250 250
Air inlet diameter mm I/D 250 250 250 250 250 250
Mass flue gas flow rate kg/h 91-448 114-560 138-676 160-789 183-907 205-1026
Flue gas temperature (80/60°C) °C 30-80 30-80 30-80 30-80 30-80 30-80
Residual fan duty Pa 130 120 130 150 150 150
HYDRAULICS
Water content litres 49 60 71 82 93 104
Hydraulic resistance @ 20°C ΔT mbar 113 110 120 110 125 130
Resistance @ 11°C ΔT mbar 374 364 397 364 413 435
GAS 310 ECO PRO
TECHNICAL INFORMATION

285/5 335/6 430/7 500/8 575/9 650/10
HYDRAULICS
Nominal flow rate @ 20°C ΔT l/s 3.12 3.91 4.72 5.51 6.34 7.19
Nominal flow rate @11°C ΔT l/s 5.68 7.11 8.59 10.03 11.53 13.07
Minimum flow rate m3/hr 3.4 4.2 5.1 5.9 6.8 7.8
Condensate outlet 32mm I/D 32mm I/D 32mm I/D 32mm I/D 32mm I/D 32mm I/D
Connection size flow and return
flange PN16 NW 80 NW 80 NW 80 NW 80 NW 80 NW 80
Connection size secondary return
flange PN16
NW 65 NW 65 NW 65 NW 65 NW 65 NW 65
Standard operating temperature °C 20-90 20-90 20-90 20-90 20-90 20-90
Max operating temperature °C 90 90 90 90 90 90
High limit temperature °C 110 110 110 110 110 110
Max water operating pressure bar 777777
Min water operating pressure bar 0.8 0.8 0.8 0.8 0.8 0.8
GENERAL
Dry weight kg 364 398 433 495 531 568
Dimensions (WxHxD)
1862 x 1500 x 716 1862 x 1500 x 716 1862 x 1500 x 716 2172 x 1500 x 716 2172 x 1500 x 716 2172 x 1500 x 716
NOx(Dry, 0% 0) mg/kWh 33 35 32 29 36 26
Noise levels dB(A) at 1 metre 61 61 65 65 65 65
ECO Design Sound Power Levels
LWA indoors dB 69 69 69 N/a N/a N/a
Standby heat loss % 0.21 0.18 0.15 0.13 0.12 0.11
ELECTRICAL
Nominal power supply 23 0v-1p h-50hz 230v-1p h-50h z 230 v-1ph-50 hz 230v-1ph-50h z 230 v-1ph-50 hz 230v-1ph-50 hz
Power consumption w 6-279 6-334 6-426 6-543 6-763 7-723
Modulating input v dc 0 -10 0-10 0-10 0-10 0-10 0-10
Start current amps 444444
Fuse rating amps 10 10 10 10 10 10
Controls voltage 24 (max 4va) 24 (max 4va) 24 (max 4va) 24 (max 4va) 24 (max 4va) 24 (max 4va)
Insulation class IP X1B X1B X1B X1B X1B X1B
Run current amps 1.4 1.4 1.4 1.4 1.4 1.4
GAS 310 ECO PRO
TECHNICAL INFORMATION
09
GAS 310 ECO PRO
TECHNICAL INFORMATION

570
(2 x 310/5)
710
(2 x 310/6)
860
(2 x 310/7)
1000
(2 x 310/8)
1150
(2 x 310/9)
1500
(2 x 310/10)
PERFORMANCE
Nominal heat output central heating
operation @ 80/60°C kW (min-max) 69-522 87-654 123-790 122-922 148-1060 158-1202
Nominal heat output central heating
operation @ 50/30°C kW (max) 558 700 850 994 1148 1303
Nominal input (Hi) (min-max) 72-532 91-666 128-804 127-93 8 170-1078 162-1220
EFFICIENCY
SBEM seasonal efficiency GCV 96.62% 96.64% 96.58% 96.09% 95.88% 95.75%
Efficiency – full load 100% NCV 98% 98.1% 98.2% 98.3% 98.4% 98.5%
Efficiency – part load 30% NCV 109.2% 109% 108.8% 108.6% 108.3% 108.1%
ECO Design useful efficiency
@ 80/60°C (100% full load) GCV N/a N/a N/a N/a N/a N/a
ECO Design useful efficiency
@ 50/30°C (30% part load) GCV N/a N/a N/a N/a N/a N/a
GAS
Standard fuel Natural gas Natural gas Natural gas Natural gas Natural gas Natural gas
Max gas consumption m3/h 56.2 70.4 85 99.2 114 129.2
Min/max gas inlet pressure mbar 17-30 17-30 17-10 0 17-100 17-100 17-30
Gas connection size BSP inches 2 x 2” (F) 2 x 2” (F) 2 x 2” (F) 2 x 2” (F) 2 x 2” (F) 2 x 2” (F)
Flame protection Ionisation Ionisation Ionisation Ionisation Ionisation Ionisation
Ignition Electronic Electronic Electronic Electronic Electronic Electronic
FLUE (SUPPLIED AS STANDARD FOR CONVENTIONAL FLUE, OPTION FOR ROOM-SEALED AVAILABLE)
Flue diameter mm I/D 350 350 350 350 350 350
Air inlet diameter mm I/D 250 x 2 250 x 2 250 x 2 250 x 2 250 x 2 250 x 2
Mass flue gas flow rate kg/h 182-896 228-1120 276-1352 320-1578 366-1814 410-2052
Flue gas temperature (80/60°C) °C 30-80 30-80 30-80 30-80 30-80 30-80
Residual fan duty Pa 130 120 130 130 130 150
HYDRAULICS
Water content litres 49 (per module) 60 (per module) 71 (per module) 82 (per module) 93 (per module) 104 (per module)
Hydraulic resistance @ 20°C ΔT mbar 113 (per module) 110 (per module) 120 (per module) 110 (per module) 125 (per module) 130 (per module)
Resistance @ 11°C ΔT mbar 374 (per module) 364 (per module) 397 (per module) 364 (per module) 413 (per module) 435 (per module)
GAS 610 ECO PRO
TECHNICAL INFORMATION

570
(2 x 310/5)
710
(2 x 310/6)
860
(2 x 310/7)
1000
(2 x 310/8)
1150
(2 x 310/9)
1500
(2 x 310/10)
HYDRAULICS
Nominal flow rate @ 20°C ΔT l/s
3.12 (per module) 3.91 (per module) 4.72 (per module) 5.51 (per module) 6.34 (per module) 7.19 (per module)
Nominal flow rate @11°C ΔT l/s
5.68 (per module) 7.11 (per module) 8.59 (per module) 10.03 (per module) 11.53 (per module) 13.07 (per module)
Minimum flow rate m3/hr
3.4 (per module) 4.2 (per module) 5.1 (per module) 5.9 (per module) 6.8 (per module) 7.8 (per module)
Condensate outlet 2 x 32mm I/D 2 x 32mm I/D 2 x 32mm I/D 2 x 32mm I/D 2 x 32mm I/D 2 x 32mm I/D
Connection size flow and return
flange PN16
2 x NW 80 2 x NW 80 2 x NW 80 2 x NW 80 2 x NW 80 2 x NW 80
Connection size secondary return
flange PN16
2 x NW 65 2 x NW 65 2 x NW 65 2 x NW 65 2 x NW 65 2 x NW 65
Standard operating temperature °C 20-90 20-90 20-90 20-90 20-90 20-90
Max operating temperature °C 90 90 90 90 90 90
High limit temperature °C 110 110 110 110 110 110
Max water operating pressure bar 777777
Min water operating pressure bar 0.8 0.8 0.8 0.8 0.8 0.8
GENERAL
Dry weight kg 707 771 837 957 1025 1095
Dimensions (WxHxD) 1460 x 1726
x 1862
1460 x 1726
x 1862
1460 x 1726
x 1862
1460 x 1726
x 2172
1460 x 1726
x 2172
1460 x 1726
x 2172
NOx (Dry, 0% 0) mg/kWh 33 35 32 29 36 26
Noise levels dB(A) at 1 metre 64 64 68 68 68 68
ECO Design Sound Power Levels
LWA indoors dB
N/a N/a N/a N/a N/a N/a
Standby heat loss % 0.21 0.18 0.15 0.13 0.12 0.11
ELECTRICAL
Nominal power supply
2 x 230v-1ph-50hz 2 x 230v-1ph-50hz 2 x 230v-1ph-50hz 2 x 230v-1ph-50hz 2 x 230v-1ph-50hz 230v-1p h-50h z
Power consumption w 12-558 12-668 12-852 12-1086 12-1526 14-1446
Modulating input v dc 0-10 0-10 0-10 0-10 0-10 0-10
Start current amps 2 x 4 2 x 4 2 x 4 2 x 4 2 x 4 2 x 4
Fuse rating amps 2 x 10 2 x 10 2 x 10 2 x 10 2 x 10 2 x 10
Controls voltage 2 x 24 (max 4va) 2 x 24 (max 4va) 2 x 24 (max 4va) 2 x 24 (max 4va) 2 x 24 (max 4va) 2 x 24 (max 4va)
Insulation class IP X1B X1B X1B X1B X1B X1B
Run current amps 2 x 1.4 2 x 1.4 2 x 3.8 2 x 3.8 2 x 3.8 2 x 3.8
GAS 610 ECO PRO
TECHNICAL INFORMATION
11
GAS 610 ECO PRO
TECHNICAL INFORMATION

SUGGESTED
ENGINEERING SPECIFICATION
GAS 310 ECO PRO
CONSTRUCTION
The boiler will consist of a sectional cast aluminium heat
exchanger with other major components contained within a
rigid steel frame with removable casing parts for maintenance
purposes. The boiler will come complete with wheels 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 shall be 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
rotated 90˚ towards the short side to suit site location. The boiler
shall be able to pass through 720mm standard door and shall be
delivered fully assembled.
HYDRAULIC, GAS AND
FLUE CONNECTIONS
The boiler will be available with flow and return connections on
the left or right hand end of the boiler (this must be decided
during coordination), with the gas connection on the top of
the boiler. The flue gas outlet, complete with a condensate
connection shall be at a low level on the same end as the F/R
connections. The combustion air inlet is located at the top of the
boiler. The boiler will be suitable for room-sealed or conventional
flue applications and designed to operate at working pressures
not exceeding seven bar.
OPERATION
The boiler shall come complete with a modulating control system
that limits the maximum difference in temperature between the
heating flow and return and the maximum speed at which the
flow temperature increases. The boiler shall come complete
with a pre-mix burner (NG) with the gas/air ratio control system
controlled internally. An intelligent, advanced boiler control shall
continuously monitor the boiler conditions, varying the heat
output to suit the system load. The controls shall be able to react
to external negative influences in the rest of the system (flow
rates and air/gas supply problems) maintaining boiler output for
as long as possible without resorting to a lock out condition.
Should a negative effect happen in the system the boiler shall
reduce its output and/or shuts down (shut-off mode), awaiting
the negative conditions to return to normal before re-starting.
The control cannot override the standard flame safety controls.
Standard frost protection shall activate below 7°C with stage
one activating the system/shunt pump. Stage two shall activate
below 3°C with boiler switching on to 10°C flow.
CONTROLS
The boiler will include a controls package that allows the actual
and set values to be read and adjusted on the built-in digital
display, which also provides normal operating and fault code
indication. The controls shall come as standard with the following
inputs/outputs:
•0-10V input (flow or load control)
•Common alarm
•High limit lock out
•External gas valve control (optional)
•Low water protection (optional)
•Frost protection
•External pump control
•Hydraulic pressure sensor (optional)
•Shutdown interlock
•Min gas pressure switch (optional)
•Release input
•Volt free (enable signal)
•Open therm control.
FEATURES
•Ultra-low NOX<36mg/kWh
•Fully modulating
•Quiet operation <52dB(A)
•Supplied on fully built-in wheels
•Air pressure differential sensor (LDS)
•ErP compliant
•Digital diagnostic display
•Pre-mix burner
•Left or right hand versions available
•In-built passive flue gas non-return valve.
DIMENSIONS AND CONNECTIONS
The small footprint of this range alongside its easy disassembly
and its space saving configurations, makes it ideal for modular
arrangement and particularly suitable for retrofit applications.

GAS 610 ECO PRO
CONSTRUCTION
The boiler will consist of a sectional cast aluminium heat
exchanger with other major components contained within a
rigid steel frame with removable casing parts for maintenance
purposes. The boiler will consist of two modules connected
together to share the same air-box. Each section is able to
perform independently to each other and should one module
go to fault the other will remain operational. The boiler will be
complete with wheels to enable the assembled unit to be easily
manoeuvred into position within the plant room on site with the
minimum effort. All major electrical and electronic controls shall
be contained in 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 rotated 90˚ towards the short side to suit
site location. The boiler will be able to pass through 720mm
wide standard door fully assembled in two sections to allow
ease of positioning.
HYDRAULIC, GAS AND
FLUE CONNECTIONS
The boiler will be available with flow and return connections on
the left or right hand end of the boiler (this must be decided
during coordination), with the gas connection on the top of
the boiler. The flue gas outlet, complete with a condensate
connection shall be at low level on the same end as the F/R
connections. The combustion air inlet is located at the top of the
boiler. The boiler will be suitable for room-sealed or conventional
flue applications and designed to operate at working pressures
not exceeding seven bar. The boiler will have two flows and
returns at one end with a combined flue gas outlet. The control
panel will be rotated to enable the boiler connections to be on
the left or right hand side.
OPERATION
The boiler will come complete with a modulating control system
that limits the maximum difference in temperature between the
heating flow and return and the maximum speed at which the
flow temperature increases. The boiler will come complete with a
pre-mix burner (NG) with the gas/air ratio control system controlled
internally. An intelligent, advanced boiler control shall continuously
monitor the boiler conditions, varying the heat output to suit the
system load. The control will be able to react to external negative
influences in the rest of the system (flow rates and air/gas supply
problems) maintaining boiler output for as long as possible without
resorting to a lock out condition. Should a negative effect happen
in the system the boiler shall reduce its output and/or shut down
(shut-off mode), awaiting the negative conditions to return to normal
before re-starting. The control cannot override the standard flame
safety controls. Standard frost protection shall activate below 7°C
with stage one activating the system/shunt pump. Stage two shall
activate below 3°C with the boiler switching on to 10°C flow.
CONTROLS
The boiler will include a controls package that allows the actual and
set values to be read and adjusted on the built-in digital display,
which also provides normal operating and fault code indication.
The controls shall come as standard with the following inputs/outputs:
•0-10V input (flow or load control)
•Common alarm
•High limit lock out
•External gas valve control (optional)
•Low water protection (optional)
•Frost protection
•External pump control
•Hydraulic pressure sensor (optional)
•Shutdown interlock
•Min gas pressure switch (optional)
•Release input
•Volt free (enable signal)
•Open therm control.
FEATURES
•Ultra-low NOX<36mg/kWh
•Fully modulating
•Quiet operation <52dB(A)
•Supplied on fully built-in wheels
•Air pressure differential sensor (LDS)
•ErP compliant
•Digital diagnostic display
•Premix burner
•In-built passive flue gas non-return valve.
DIMENSIONS AND CONNECTIONS
The small footprint of this range alongside its easy disassembly
and its space saving configurations, makes it ideal for modular
arrangement and particularly suitable for retrofit applications.
13
SUGGESTED ENGINEERING
SPECIFICATION

BOILER
TYPE
A
(MM)
B
(MM)
C
(MM)
L
(MM)
310-285 (5) 1833 1635 1862 1490
310-355 (6) 1833 1635 1862 1490
310-430 (7) 1833 1635 1862 1490
310-500 (8) 2142 1944 2172 1800
310-575 (9) 2142 1944 2172 1800
310-650 (10) 2142 1944 2172 1800
KEY
Heating circuit flow (80mm);
Flange NW 80 (Standard DIN 2576)
Heating circuit return (65mm);
Flange NW 80 (Standard DIN 2576)
Gas connection; G2” (Female thread)
Condensates discharge; 32mm (Internal)
Flue gas outlet; Ø 250mm
Air intake; Ø 250mm
Second return (optional);
Flange NW 80 (Standard DIN 2576)
GAS 310
ECO PRO
DIMENSIONS
Note: Heating flow pipe 80mm with a mating
flange NW 80 (PN16). Return flow pipe 65mm
with a mating flange NW 80 (PN16). The optional
return pipe is also 65mm, and fitted with a NW80
(PN16) mating flange. The service areas are
shown on page 20.
Ø
Ø
22
2
1023
320366
1310
447
65
65
80
250
2
250
155
310
1293
1477
1500
130
353
592
706
716
920
C
L
B
A

The service side with the inspection hatch on the heat exchanger is considered to
be the front of the boiler. This boiler is available in both a left-hand and right-hand
version. This means that the hydraulic connections and the flue gas discharge are
situated on either the left or the right-hand side of the boiler. The control panel is
on the front as standard, but can easily be rotated so that it is on the short side.
To make the boiler level and to raise the wheels off the floor, the adjustment jacks
must be used. Turn the adjustment bolts out as soon as the boiler is placed in the
correct position. The picture shows the support surface of the boiler. This is the
position of the adjustment bolts.
KEY
LLeft version
RRight version
IInspection hatch
L
I
T003785-C
R
I
GAS 310
ECO PRO
CONFIGURATION
15
GAS 310 ECO PRO
DIMENSIONS

BOILER
TYPE
A
(MM)
B
(MM)
C
(MM)
L
(MM)
610-570 (5) 1833 1582 1862 1490
610-710 (6) 1833 1582 1862 1490
610-860 (7) 1833 1582 1862 1490
610-1000 (8) 2142 1892 2172 1800
610 -115 0 ( 9 ) 2142 1892 2172 1800
610-1300 (10) 2142 1982 2172 1800
KEY
Heating circuit flow (80mm);
Flange NW 80 (Standard DIN 2576)
Heating circuit return (65mm);
Flange NW 80 (Standard DIN 2576)
Gas connection; G2” (Female thread)
Condensates discharge; 32mm (Internal)
Flue gas outlet; Ø 350mm
Air intake; Ø 250mm
Air supply collector (Optional); Ø 350mm
Second return (optional);
Flange NW 80 (Standard DIN 2576)
Note: Heating flow pipe 80mm with a mating
flange NW 80 (PN16). Return flow pipe 65mm
with a mating flange NW 80 (PN16). The optional
return pipe is also 65mm and fitted with a NW80
(PN16) mating flange.
2
2
1726
GAS 610
ECO PRO
DIMENSIONS
1500
130
1023
366 320
592 592
353353
722
1460
641
C
L
B
A
920
8 8
894,5
1477
1310
2
155
310
1293
1760
T003766-F

The Gas 610 Eco Pro boiler is not available with a choice between left or right
hand versions, but the control panel can easily be rotated to enable the boiler
connections to be on the left or right hand side. To make the boiler level and
to raise the wheels off the floor, the adjustment bolts must be used. Turn the
adjustment bolts out as soon as the boiler is placed in the correct position.
The picture shows the support surface of the boiler. This is the position of the
adjustment bolts.
17
GAS 610 ECO PRO
DIMENSIONS
GAS 610
ECO PRO
CONFIGURATION
673
55 5555
55
A
5555
55
663663
21,5 21,5
55 55 55
55
531 531
87, 5 87, 5

The wheels are designed for transport purposes only and not for use when the
boiler is in its final position. If required for internal transport, the boiler can be
dismantled into smaller parts for transport. The boiler can be stripped of:
•casing components
•gas/air components
•the frame section on the instrument panel side.
GAS 310/610 ECO PRO
BOILER TYPE A (MM)
310-285/610-570 723
310-355/610-710 723
310-430/610-860 723
310-500/610-1000 1032
310-575/610-1150 1032
310-650/610-1300 1032
GAS 310/610 ECO PRO
BOILER TYPE
L (MM)
310-285/610-570 1160
310-430/610-710 1160
310-430/610-860 1160
310-500/610-1000 1469
310-575/610-1150 1469
310-650/610-1300 1469
GAS 310/610
ECO PRO
DIMENSIONS
55
See the diagram and table for the
dimensions of the largest remaining
transport part, the frame section
with heat exchanger and water
connections. For information on
fitting the parts, refer to the assembly
instructions delivered with the boiler.
Diagram shows position
of support feet.
663 21,5
55
55 55
531 87, 5
A673
T003474-B
1000
1000
700
1107
T003676-B
55

The Gas 310/610 can be configured in a multitude of ways.
Examples below:
SPACE SAVING
CONFIGURATIONS
*Indicates spacing required if this is the operating side.
19
SPACE SAVING
CONFIGURATIONS
C + 1100*
C + 600
C300 300
800*
800*720*800*720800*
2540*
150150150
150
800* 720 800* 1450 800* 720 800*
150
1525*
3050*
4790*
300 300C
C + 600
C + 1100*
800*

For the dimensions of C/C1, see page 16.
GAS 310
ECO PRO
MAINTENANCE
AREAS
*Spacing required if this is operating side.
C + 1100*
C + 600
C300 300
150720800*
1670*
3190*
800*720150720800*
C
C + 600
C + 1100*
300 300
800*
800*
C + C1 + 2200*
C + C1 + 1200
600
800*800*
CC1300 300
150720800*
1670*
T003499-B