Remeha Avanta Plus Quinta Pro Brochure

2015-05-27

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REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS
Cascade & Skid Mounted Systems
The New Remeha Quinta Pro
HIGH EFFICIENCY
110% NCV AT 40/30°C FULLY MODULATING
BOILER CONTROL PREMIX BURNER CLEAN
COMBUSTION ULTRA LOW NOx
BREEAM EXCELLENT 100%
RECYCLABLE
High efficiency wall hung or free standing
condensing boilers with ultra low NOx emission
QUINTA PRO CASCADE & SKID MOUNTED
SYSTEM OUTPUTS (2-6 BOILERS)
QP30: 8.0 - 31.4 kW
QP45: 8.0 - 43.0 kW
QP65: 12.0 - 65.0 kW
QP90: 14.1 - 89.5 kW
QP115: 16.6 - 114.0 kW
SEDBUK RATED (QP30, QP45, QP65)
Quinta CascadeSkid brochure 12603_Layout 1 04/02/2011 15:54 Page 1
2
General description of
Cascade systems
The optimum number of boilers in a
Cascade
In many situations it is advantageous to spread the total
required heat output over several boilers. This can be made
possible by means of a "cascade system". In a cascade
configuration, heating boilers are connected hydraulically.
If the heat demand increases or decreases, boilers are
switched on or off respectively. If using a Remeha multiple
boiler controller or a quality building management system.
It is then important to determine the ideal number of boilers
for the cascade.
The following factors need to be taken into account when
deciding on the number of boilers:
- Investment; When boilers are split up, the investment costs
(boiler cost including installation, fittings, pipe work, pumps
and control equipment) can work out lower or higher.
However, this depends to a large extent on the situation.
- Reliability; Reliability increases with the number of boilers.
Research has shown that reliability is already optimum for
systems with four boilers in a cascade.
- Efficiency; There is no appreciable difference in terms of
efficiency between several small or one or two larger boilers.
- Maintenance and faults; There is a greater overall risk of
faults in a system with several boilers. A larger group of
engineers can service and maintain smaller boilers.
- Configuration; The lightweight and compact design means
that you have more flexibility when siting the boilers. Very little
floor space is required and there is minimum load on the floor.
- Adjustment; When using several boilers and modulating
control, the heat output offered is virtually equal to the heat
output requested.
A number of the points mentioned are dependent on the
situation and so consideration as to which solution is the best
will need to be given on a project-by-project basis.
The cascade kits are not supplied with the boilers they must
be ordered separately.
Contents page
Introduction 2
Cascade description 2-4
Cascade wall mounted linear system 5
Cascade free standing linear system 6
Cascade free standing back-to-back system 7
Gas connection for air & exhaust pipes 8-9
Skid Mounted description 10
Skid linear configuration - 2 boilers 12
Skid linear configuration- 3 boilers 13
Skid back-to-back configuration - 4 boilers 14
Skid back-to-back configuration - 6 boilers 15
Flue gas table for combined flue discharge 16
Flue linear configuration 17
Flue dilution system 18
Notes 19
Introduction
This technical information
contains useful and important
information for proper
dimensioning of a cascade
system with wall-mounted
boilers.
It describes the correct use of
the complete Remeha
cascade systems with the
modulating wall-mounted
boilers Quinta Pro
30/45/65/90/115.
Please contact us if you have
any questions or for further
information about cascade
configurations.
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REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS
3
Compact Cascade configurations
The boilers Quinta Pro 30/45/65/90/115 are particularly suitable for use
in a cascade configuration. Their width of only 50 cm means that a high
heat output level can be installed on a small wall. This big difference
becomes apparent when comparing a Remeha cascade system with
cascade systems using boilers from other manufacturers.
For example, using 6 times a Quinta Pro 115, only approx. 3.8 m
(including low loss header) wall width is required for 642 (80/60oC) kW.
The boilers therefore allow an exceptionally compact cascade
configuration.
Cascade systems
For installing 2 to 6 boilers, our product range includes systems that
are very comprehensive and easy to install. The hydraulic and gas
system can be put together entirely without welding, using screw
connections, compression connections and flanges. The individual
components of the cascade systems are available for independent
cascade installation.
Hydraulic isolation: low loss header
Practical experience has shown that it is beneficial to create hydraulic
isolation between the boiler circuit and the system circuit using a low
loss header. This means that a widely varying volume flow on the
system side hardly influences the volume flow on the boiler side at all.
This also applies in reverse: a widely varying volume flow on the boiler
side hardly influences the volume flow on the system side at all.
Controlling several different groups hydraulically is therefore
significantly easier as they do not, or barely, influence each other.
This creates better overall operating conditions for the system.
Output control
Use the iSense Pro for up to 6 boilers or the iSense in combination with
the Celcia MC4 for a maximum of 4 boilers.
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4
Remeha Cascade systems
In order to make it as simple as possible to create a cascade
configuration, our product range has included complete
cascade systems for years. The compact design of the
boilers, combined with the smart gas and water connection
technology of the cascade system, makes it possible to
install a high heat output in a small area. For example, using
six Quinta Pro 115 boilers, only 3.8 m approx. (including low
loss header) wall width is required for 642 kW (80/60ºC). The
cascade systems can be divided into 3 main groups:
- 2 to 6 boilers in a linear configuration, wall mounted.
- 2 to 6 boilers in a linear configuration, mounted on a free-
standing frame.
- 3 to 6 boilers in a back-to-back configuration, mounted on
a freestanding frame.
Please contact us for different configurations (specials). We
also provide in-depth advice on the choice of flue gas
discharge material and control engineering, including for
non-standard configurations.
Structure of cascade systems
The return, flow, and gas connections of the individual
boilers are connected using the fittings supplied by means of
horizontal connections to main pipes for return, flow and
gas. These pipes are welded onto a frame that rests on the
floor and is fixed to the wall or to a free-standing frame.
The low loss header supplied has flange connections, which
can be fitted to the left or right of the cascade main pipe as
required. The blind flanges supplied are then fitted on the
other side. The gas main pipe has a flange to which the
optional gas filter can also be connected on the left or right
as required. The blind flange supplied is then fitted on the
other side. When a gas filter is used, a pressure loss of 3
mbar over the gas filter must be taken into account.
The minimum inlet working gas pressure after the gas filter
is 17 mbar. A common PVC condensed water discharge pipe
(not supplied) can be installed in the frame. For this
purpose, holes have been made in the frame into which this
pipe can be fitted (to the left or right as required) sloping
downwards.
Any combination of boilers is possible. See the table for the
corresponding heat outputs.
Useful output (kW) 50/30°C 80/60°C
Quinta Pro 30 31.4 29.3
Quinta Pro 45 43.0 40.0
Quinta Pro 65 65.0 61.0
Quinta Pro 90 89.5 84.2
Quinta Pro 115 114.0 107.0
Advantages
at a glance
Quinta Pro boiler
•High efficiency: 110% NCV at
40/30ºC (99% GCV)
•Boiler control:
a) Modulating (18-100%)
b) On/off
•Premix burner for clean
combustion
•Low NOx<39mg/kWh
•Quiet operation < 52 dBA
•LED illuminated air box
•Digital display
•Data file for storing information
•Remote signalling options
•Cast aluminium heat exchanger
•Easy maintenance
•Built-in calorifier control
•Options for modular control
and/or weather compensator
•Control 0-10V signal or volt free
•PC connection
•Advanced boiler control,
for reliable heat delivery
•Conventional or “room-sealed”
operation
•Cascade packages for up to
6 boilers
•Quick and easy installation
•Space saving
•For use with natural gas and
L.P.G. (Some models require a
conversion kit)
•Suitable for pressurised flue
systems
Quinta CascadeSkid brochure 12603_Layout 1 04/02/2011 15:54 Page 4
REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS
5
100
500
500
284
A
B
1590 OV 1590
3150
30 500
X Y
1306
270
1576
1476
530 231
Wall-mounted linear configuration (LW) -
2 to 6 boilers
Installation drawings for Cascade systems
The cascade systems can be divided into 3 main groups:
- 2 to 6 boilers in a linear configuration, wall mounted.
- 2 to 6 boilers in a linear configuration, mounted on a free-standing frame.
- 3 to 6 boilers in a back-to-back configuration, mounted on a freestanding frame.
The boiler side of the cascade systems is sized to 20ΔT.
The low loss header is based on 20 / 11ΔT.
A System flow; connection Dn 100 or 125/DIN 2631 (8 holes)
B System return; connection Dn 100 or 125/DIN 2631 (8 holes)
Gas supply connection Dn 50 or 65/DIN 2633 (4 holes)
Air inlet / Flue gas discharge concentric connection
Quinta Pro 30/45 = 80 / 125 mm, Quinta Pro 65/90/115 = 100 / 150 mm
Suspension points
OV Low loss header (Dn65 = 633 mm; Dn100 = 643mm)
X Distance to system return connection = 200 mm
Y Distance to system flow connection = 560 mm
Dimensions (mm)
No. of boilers 23456
Width (mm) 1030 1560 2090 2620 3150
Quinta CascadeSkid brochure 12603_Layout 1 04/02/2011 15:54 Page 5
6
500
284
500
A
B
1590 1590 OV
3150
30 500
Y
X
100
1306
270
1576
555
530 231
Free-standing linear configuration (LV) -
2 to 6 boilers
A System flow; connection Dn 100 or 125/DIN 2631 (8 holes)
B System return; connection Dn 100 or 125/DIN 2631 (8 holes)
Gas supply connection Dn 50 or 65/DIN 2633 (4 holes)
Air inlet / Flue gas discharge concentric connection
Quinta Pro 30/45 = 80 / 125 mm, Quinta Pro 65/90/115 = 100 / 150 mm
Suspension points
OV Low loss header (Dn65 = 633 mm; Dn100 = 643 mm)
X Distance to system return connection = 200 mm
Y Distance to system flow connection = 560 mm
Dimensions (mm)
No. of boilers 23456
Width (mm) 1030 1560 2090 2620 3150
Quinta CascadeSkid brochure 12603_Layout 1 04/02/2011 15:54 Page 6
REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS
7
500
284
500
1306
270
1576
100
1055
1590 OV
1560
30 500
Y
X
A
B
530231
Back-to-back configuration (RG) -
3 to 6 boilers
A System flow; connection Dn 100 or 125/DIN 2631 (8 holes)
B System return; connection Dn 100 or 125/DIN 2631 (8 holes)
Gas supply connection Dn 50 or 65/DIN 2633 (4 holes)
Air inlet / Flue gas discharge concentric connection
Quinta Pro 30/45 = 80 / 125 mm, Quinta Pro 65/90/115 = 100 / 150 mm
Suspension points
OV Low loss header (Dn65 = 633 mm; Dn100 = 643 mm)
X Distance to system return connection = 200 mm
Y Distance to system flow connection = 560 mm
Dimensions (mm)
No. of boilers 23456
Width (mm) 1030 1560 2090 2620 3150
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8
8
Gas
Connection
General
The boilers are suitable for use with
natural gas and propane category
II2H3P. Connect the boilers to the
gas mains in accordance with the
applicable regulations. For the
Quinta Pro boilers, the gas
connections are at the bottom of
the boiler and are 3/4” male thread.
There must be a main gas cock
close to the boilers. A gas filter for
the gas supply pipe is available as
an accessory.
Gas Pressures
The required inlet working
pressure per boiler is 17 to
30 mbar. The correct burner
pressure setting for natural
gas was set at the factory and,
in principle, does not need
re-adjusting. For propane
operation, see the installation
service manual for the boilers
concerned. The usual inlet
pressure for commercial propane
(37-50 mbar) can be used.
Connections for the air
and exhaust pipes
General
The boilers can be used in room-ventilated or room-sealed
operation. The room-open version extracts the necessary
combustion air from its environment. In this case via an air
supply opening at the top of the boilers. By installing an air
supply pipe on the air supply opening, you obtain a room-
sealed system.
Individual flue gas discharge
If there is insufficient height for a joint flue gas discharge
and/or air supply, individual roof feed-throughs must be
installed at the same height on flat or sloping roofs. This
avoids flue gases from one boiler being taken in by another
boiler. From an aesthetic point of view, the individual roof
feed-throughs can be placed within a single feed-through
construction. Recirculation problems may arise where
discharge takes place into recessed and in the vicinity or
rising walls.
If in doubt, please contact us.
Joint flue gas discharge
If there is sufficient height, a collector system can be used
(not supplied by us). In the design of the collector system, a
distinction is made between a series or parallel
configuration. This document only covers the series
configuration.
In series configuration, individual boilers are connected
directly to a horizontal collector, which then continues on to
the vertical section. An advantage of this configuration is
that only one (room-ventilated operation) or two (room-
sealed operation) collector pipes run immediately above the
boilers. It is also possible to link serveral boilers under
overpressure on the flue gas side: This results in smaller
diameters of the flue gas discharge pipe. For this purpose,
the Quinta Pro boilers have a flue gas non-return valve as
standard. This creates a considerable saving on the cost of a
combined flue-gas-discharge system with several boilers
switched in a cascade. The boiler’s parameter settings will
need to be changed.
Consult our Technical department about this.
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REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS
9
Material requirements
When combining different metals, these must be galvanically isolated. Galvanic isolation
(rubber inlay) is also required when using brackets made from a different metal. Fit the
flue gas discharge pipe so that it has airtight and watertight joints and connections.
Flue gas discharge material
Because the flue gases condense, the flue gas discharge must not be connected to a
brick duct. In situations of this kind, always use a lining tube.
Depending on the design, the following materials may be used:
External components must always be insulated.
Air inlet equipment
Depending on the design, the following materials may be used:
If condensate forming on the air supply collector is problematic, it must be insulated so
that it is watertight.
Condensate drain
Because the flue gases condense in the discharge system, condensed water develops
and must be discharged. As a rule of thumb, we anticipate a maximum of 1 litre of
condensed water per m3of natural gas consumed. In practice, this amounts to:
•Approx. 5 litre of condensate per hour for the Quinta Pro 45
•Approx. 7.5 litre of condensate per hour for the Quinta Pro 65
•Approx. 10 litre of condensate per hour for the Quinta Pro 90
•Approx. 12.5 litre of condensate per hour for the Quinta Pro 115
In addition to the condensate drain on each individual boiler, in the case of a joint flue gas
discharge, an additional condensate collector must be placed at the bottom of the vertical
duct. When using different materials, the condensed water must be discharged separately for
each section in a single type of material. Discharge the condensed water directly into the
drain using a syphon. Make an open connection with the drain. Condensed water must not be
discharged into gutters: This prevents freezing and corrosion of the materials normally used
for gutters. Horizontal sections in the flue gas discharge must slope down (5cm/m) towards
the boilers. Fit the individual boilers to the joint flue gas discharge so that no condensate can
flow back into the boilers.
Material
A rigid wall (1) Thick aluminium wall Approval according to EN-1856-1
Stainless steel Approval according to EN-1856-1
Synthetic material T120 Approval according o Gastec QA or KOMO
Flexible (1) Stainless steel Approval according to EN-1856-1
Synthetic material T120 Approval according to Gastec QA or KOMO
(1) The sealing must conform with pressure class 1
Material
A rigid wall
Flexible Aluminium/Stainless Steel/Synthetic material
Quinta CascadeSkid brochure 12603_Layout 1 04/02/2011 15:54 Page 9
General description of
Skid Mounted systems
(Pre-assembled)
The Skid Mounted package is a complete pre-assembled unit
and can be supplied in the following configuration:
Back-to-back or in line configuration (same price for either).
Maximum frame depth 650mm to allow access through a
normal door (in line boilers only).
Boilers c/w individual shunt pumps.
Boxed steel tube frame (powder coated) complete with
lifting eyes.
Wheeled frame for ease of movement within the plant room.
Fully adjustable legs for levelling after final positioning.
All associated pipe work and fittings, safety valves etc
(Safety valves set at 3bar unless stated otherwise).
Boiler Skids designed to suit either 20 degrees or 11 delta T.
Flow and return connections to the system, BSP Thread or
Flanged PN16 (left hand connections standard - right handed
on request).
Gas connection Flanged PN16.
Condensate Terrain pipe work.
Midi-pressurisation unit c/w expansion vessel
(supplied loose).
Lockable isolating switch for the power supply to each boiler.
6ltr Dosing pot.
Control panel with run and fail indicators for all boilers and
pressurisation unit.
Volt free contacts for BMS interface within control panel.
Gas valve safety interlock via volt free contacts within control
panel.
Advantages
at a glance
Quinta Pro boiler
•High efficiency: 110% NCV at
40/30ºC (99% GCV)
•Boiler control:
a) Modulating (18-100%)
b) On/off
•Premix burner for clean
combustion
•Low NOx<39mg/kWh
•Quiet operation < 48 dBA
•Digital display
•Data file for storing information
•Remote signalling options
•Cast aluminium heat exchanger
•Easy maintenance
•Built-in calorifier control
•Options for modular control
and/or weather compensator
•Control 0-10V signal or volt free
•PC connection
•Advanced boiler control,
Remeha’s ‘abc’, for reliable heat
delivery
•Conventional or “room-sealed”
operation
•Cascade packages for up to
6 boilers
•Quick and easy installation
•Space saving
•For use with natural gas and
L.P.G. (Some models require a
conversion kit)
10
Quinta CascadeSkid brochure 12603_Layout 1 04/02/2011 15:54 Page 10
Combined nominal output (kW) at 81/70°C
No. of boilers 2 3 4 5 6
Quinta 45 80 120 160 200 240
Quinta 65 122 183 244 305 366
Quinta 90 168 252 336 420 504
Quinta 115 214 321 428 535 642
Note: Larger configurations available on request, please
contact our technical help desk for further information.
REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS
11
Description of pressurisation units used on
the Skid Mounted Boilers
Automatic heating system pressure set c/w with high and low pressure switches.
Supplied with a loose pressure vessel, sized to suit the kW rating of boilers at 5M
static head and 3 bar operating pressure unless advised otherwise.
Quinta CascadeSkid brochure 12603_Layout 1 04/02/2011 15:54 Page 11
12
Skid Mounted
linear configuration - 2 boilers
Dimensions (mm)
Config. A B C D E F G H J
2xQ45 65 dia 50 dia 225 90 500 150 dia 320 1720 260
2xQ65 65 dia 50 dia 225 90 500 150 dia 320 1720 260
2xQ90 65 dia 50 dia 225 90 500 150 dia 320 1720 260
2xQ115 80 dia 50 dia 225 90 650 200 dia 350 1750 200
Note: Frame manufactured from fully welded Epoxy Powder Coated 40mmSQ.
Box Section. Frame complete with Adjustable Feet for levelling requirement.
All Flanges are PN16.
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REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS
13
Skid Mounted
linear configuration - 3 boilers
Dimensions (mm)
Config. A B C D E F G H J
3xQ45 65 dia 50 dia 225 90 500 150 dia 320 2280 260
3xQ65 65 dia 50 dia 225 90 500 150 dia 320 2280 260
3xQ90 100 dia 65 dia 230 100 650 200 dia 350 2310 200
3xQ115 100 dia 65 dia 230 100 650 200 dia 350 2310 200
Note: Frame manufactured from fully welded Epoxy Powder Coated 40mmSQ.
Box Section. Frame complete with Adjustable Feet for levelling requirement.
All Flanges are PN16.
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14
Skid Mounted
back-to-back configuration - 4 boilers
Dimensions (mm)
Config. A B C D E F G H J
4xQ45 80 dia 50 dia 225 90 650 200 dia 350 1750 630
4xQ65 80 dia 65 dia 230 90 650 200 dia 350 1750 630
4xQ90 100 dia 65 dia 235 90 650 200 dia 350 1750 630
4xQ115 125 dia 80 dia 235 90 800 250 dia 375 1750 630
Note: Frame manufactured from fully welded Epoxy Powder Coated 40mmSQ.
Box Section. Frame complete with Adjustable Feet for levelling requirement.
All Flanges are PN16.
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REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS
15
Skid Mounted
back-to-back configuration - 6 boilers
Dimensions (mm)
Config. A B C D E F G H J
6xQ45 80 dia 65 dia 230 90 650 200 dia 350 2310 630
6xQ65 80 dia 65 dia 230 90 650 200 dia 350 2310 630
6xQ90 125 dia 80 dia 235 90 800 250 dia 375 2335 630
6xQ115 125 dia 80 dia 235 90 800 250 dia 375 2335 630
Note: Frame manufactured from fully welded Epoxy Powder Coated 40mmSQ.
Box Section. Frame complete with Adjustable Feet for levelling requirement.
All Flanges are PN16.
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16
Flue gas table for combined
flue discharge
Dimensioning flue gas discharge linear configuration
The following table is for dimensioning Cascade systems in a series configuration with
the most frequently occurring combinations. The table runs from two to six units (in a
linear or back-to-back configuration). For unit combinations not described here or a
configuration that differs from the drawings, please consult our Sales Support
department.
When compiling the tables, we assumed that the units would be switched on and off one
by one and that there would be no elbows in the horizontal and vertical collector pipes.
Discharge system diameters: linear configuration, series
connection, room ventilated operation
Note: Connect the boilers to the horizontal header using swept connections.
Heat
output P Boiler types Ød=ØD(mm)
kW H=2-5m H=5-9m H=9-13m H=13-17m
80 2xQ45 130 125 125 130
120 3xQ45 180 170 165 165
160 4xQ45 220 205 195 195
200 5xQ45 255 230 220 215
240 6xQ45 280 255 240 235
122 2xQ65 155 145 145 145
183 3xQ65 220 200 195 190
244 4xQ65 265 240 230 225
305 5xQ65 305 275 255 250
366 6xQ65 340 300 280 275
168 2xQ90 175 165 160 160
252 3xQ90 250 225 215 215
336 4xQ90 305 270 255 250
420 5xQ90 350 310 290 280
504 6xQ90 390 345 320 310
214 2xQ115 200 185 180 180
321 3xQ115 285 255 240 235
428 4xQ115 345 305 285 275
535 5xQ115 395 345 323 315
642 6xQ115 440 385 355 345
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REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS
17
Linear configuration: series connection,
room ventilated operation
(For conventional or open flue systems). Typical multi boiler installation with the flue
combined into a single header and riser.
Flue gas discharge
Quinta Pro 30/45: 80mm Ø
Quinta Pro 65/90/115: 100mm Ø
Note 1: Using 90° boiler connections into the header may result in larger headers and
risers being required. Other multi boiler flue combinations for the Quinta Pro 65, 90 and
115 may be available to suit different site conditions — for further information please
consult your Area Sales Manager — contact details can be found on our web site
www.remeha.co.uk
Note 2: Other flue configurations are possible, please contact our technical help desk
for further information.
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18
Quinta Pro 30, 45, 65, 90 and 115 - Multi or single
boiler installation on a flue dilution system
Note: Remeha is unable to offer a flue dilution system and recommends that the installer
contacts a flue specialist to design and manufacture the system in accordance with the
requirements of the British Standards and to comply with the guidelines illustrated above.
Typical multi boiler installation for a flue dilution flue system showing the flue break
necessary for all pre-mix boilers to prevent the dilution fan affecting the gas/air ratio
control system in the boiler.
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REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS
Notes:
19
Quinta CascadeSkid brochure 12603_Layout 1 04/02/2011 15:54 Page 19
TreadLightly
ON THE PLANET
Remeha is committed to carbon offsetting
Designed and produced by Sans Frontiere Marketing Communications – 01273 487 800 – www.sansfrontiere.co.uk
Remeha Commercial
Head Office
Remeha House
Molly Millars Lane
Wokingham
Berkshire RG41 2QP
T: 0118 978 3434
F: 0118 978 6977
E: boilers@remeha.com
www.remeha.co.uk
The data published in this technical sales leaflet is based on the latest information (at date of publication)
and may be subject to revisions. It should be read in conjunction with our full technical brochure (available
on request). 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. Issue 1 date: Jan 2011
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