REMEHA Gas 220 Ace User manual

1
Gas 220 Ace Cascade Assembly Manual V 18042018
Gas 220 Ace – Cascade Assembly
Manual

2
Gas 220 Ace Cascade Assembly Manual V 18042018
Dear Customer,
Thank you very much for buying this appliance.
Please read through the manual carefully before using the product, and keep it in a safe place for
later reference. In order to ensure continued safe and efficient operation we recommend that the
product is serviced regularly. Our service and customer service organisation can assist with this.
We hope you enjoy years of problem-free operation with the product.
All technical and technological information contained in these technical instructions, as well as any
drawings and technical descriptions supplied, remain our property and shall not be multiplied without
our prior consent in writing. Subject to alterations

3
Gas 220 Ace Cascade Assembly Manual V 18042018
Contents
Page 2. Introduction.
Page 3. Contents List.
Page 4. Safety Liabilities.
Page 5. General Information.
Page 6. Structure of the Gas 220 Ace cascade and Flange Details.
Page 7. General view of cascade kit.
Page 8. Boiler Pipe Kits.
Page 9. Assembly Instructions.
Page 10. Adapter Kits for Gas 220 Ace -160.
Page 11. Adapter kit drawings.
Page 12. Important Notice Flow Pipe Kit Assembly.
Page 13. Connecting to the boiler circulating pump.
Page 14. Pre boiler Commissioning and Boiler Commissioning.
Page 15. Reference Guide - List of components available for the cascade kit.

4
Gas 220 Ace Cascade Assembly Manual V 18042018
Safety Liabilities
Manufacturer’s Liability
Our products are manufactured in compliance with the requirements of the various Directives
applicable. In the interests of the quality of our products, we strive constantly to improve them. We
therefore reserve the right to modify the specifications given in this document.
Our liability as manufacturer may not be invoked in the following cases:
•Failure to abide by the instructions on installing the Cascade system / Appliance.
•Failure to abide by the instructions on using the appliance.
•Adjustment or disassembly of factory made threaded joints.
•Faulty or insufficient maintenance of the Cascade system and appliance.
Installer’s liability
The installer is responsible for the installation and initial commissioning of the appliance. The installer
must observe the following instructions:
•Read and follow the instructions given in the manuals provided with the appliance and
cascade kit.
•Install the appliance and cascade kit in compliance with prevailing legislation and standards.
•Carry out initial commissioning and any checks necessary.
•Explain the installation to the user.
•If maintenance is necessary, warn the user of the obligation to check the appliance and keep it
in good working order.
•Give all the instruction manuals to the user.
User’s liability
To guarantee optimum operation of the system, you must abide by the following instructions:
•Read and follow the instructions given in the manuals provided with the appliance and
cascade kit
•Call on a qualified professional to carry out installation and initial commissioning.
•Get your installer to explain your installation to you.
•Have the required inspections and maintenance carried out by a qualified installer.
•Keep the instruction manuals in good condition close to the appliance.

5
Gas 220 Ace Cascade Assembly Manual V 18042018
General Information
This technical information contains useful and important details for the proper dimensioning of a
cascade system with floor standing boilers. The description includes the correct use of the complete
Remeha cascade system with Gas 220 Ace modulating floor standing boilers
This manual describes the installation and assembly, of the Gas 220 Ace cascade kits.
In order to make various Gas 220 boilers configurations, Remeha offer several cascade kits. The
compact design of the boilers, combined with the gas and water connection technology of the
cascade system, makes it possible to install a high heat output in a small area.
When installing two to eight Gas 220 Ace boilers, the cascade kits include components that are very
comprehensive and easy to install. The hydraulic and gas system can be put together entirely without
welding, using screw connections, and flanges.
Important
Please contact us if you have any questions or further information about cascade configurations.
Cascade Configuration
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 configuration". In a cascade configuration,
heating boilers are connected hydraulically. If the heat demand increases or decreases, boilers are
switched on or off respectively by the external controller (BMS etc supplied by others).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:
Reliability:
•Reliability increases with the number of boilers. Research has shown that reliability is already
optimum for systems with four boilers in a cascade
Arrangement:
•The compact units and therefore compact configuration means that you have more flexibility
for potential boiler locations.
Adjustment:
•When using several boilers and modulating control, the heat output offered is virtually equal to
the heat output requested.
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.

6
Gas 220 Ace Cascade Assembly Manual V 18042018
Gas 220 Ace cascade kits
Structure of the Gas 220 Ace cascade kits
Kits up to 1250kW
The flow, return and gas connections of the individual Gas 220 Ace boilers up to 1250 kW are
connected by means of pipe kits to main collectors for flow, return and gas. These collectors can be
supported by floor stands that rest on the floor or can be secured to the wall by the installer.
The low loss header supplied is connected to the DN100 flow/return collectors by the means of the
swan neck flow/return pipes. The low loss header has DN125 flange system connections. On the
boiler side, the DN100 flange connections can be fitted to the left or right of the cascade main
collectors as required. The DN100 blind flanges (supplied) are then fitted on the opposite side.
The gas main collector has a DN65 flange to which the main network gas pipe can also be connected
on the left or right as required. The DN65 blind flange supplied is then fitted on the opposite side.
Flange details (for systems <1250kW)
DN100 Flow and return flanges details: PN16 EN 1092 – 1 flange
DN65 Gas Pipe flange details: PN16 EN 1092 – 1 flange
DN125 Secondary flow and return on low loss
Header flanges details: PN16 EN 1092 – 1 flange
Kits from 1250kW to 2400kW
For higher output cascade systems (kW >1250) the Gas 220 Ace boilers are connected by means of
pipe kits to main collectors for flow, return and gas. These collectors can be supported by floor stands
that rest on the floor or can be secured to the wall by the installer.
The low loss header supplied is connected to the DN150 flow/return collectors by the means of the
swan neck flow/return pipes. The low loss header has DN 200 flange system connections. On the
boiler side, the DN150 flange connections can be fitted to the left or right of the cascade main
collectors as required. The DN150 blind flanges (supplied) are then fitted on the opposite side.
The gas main collector has a DN100 flange to which the main network gas pipe can also be
connected on the left or right as required. The DN100 blind flange supplied is then fitted on the
opposite side.
Flange details for larger output cascade systems (kW Outputs >1250)
DN150 Flow and return flanges details: PN16 EN 1092 – 1 flange
DN100 Gas Pipe flange details: PN16 EN 1092 – 1 flange
DN200 Secondary flow and return on low loss
Header flanges details: PN16 EN 1092 – 1 flange

7
Gas 220 Ace Cascade Assembly Manual V 18042018
General view of Cascade Kit
Boiler Pipe kits
The boiler pipe kits are designed to allow a quick connection to the boiler and collectors by means of
unions provided at each end. In addition, the flow and return pipe kits are provided with corrugated
flexible pipe sections that allow for small miss-alignments and make site installation easier.
The factory made threaded joints are sealed with a hard setting compound. Adjustment of
these joints will break the seal and invalidate the warranty.
Flow collector
Return collector
Gas collector
Swan neck
flow pipe
Swan neck
return pipe
Low loss header
Gas pipe kit
Return pipe kit
Flow pipe kit
Collectors
support
stands
Fig. 1
Gas blind
flange
Pump bracket
Pump collar

8
Gas 220 Ace Cascade Assembly Manual V 18042018
Fig. 2
A Grundfos Magna 1 40-60 F shunt pump is fitted on the return pipe kit. The pump selection takes
into consideration the boiler resistance and the pipework resistance to the low loss header at a 20C
flow/return temperature differential.
A check valve is fitted between boiler and pump and an isolating valve is fitted between pump and
return collector.
A pressure relief valve and an isolating valve are fitted on the flow pipe kit,.
The gas pipe kit has no flexible pipe, but the collector position relative to the boiler position can be
adjusted due to the flexible pipes fitted on the Flow and Return pipe kits. An isolation valve is provided
on the Gas pipe kit.
Assembly instructions
Use the guidelines and the required installation space as a basis for determining the correct place to
install the boilers.
Ensure that there is sufficient space around the boiler for good access and ease of maintenance.
Refer to Installation, User and service manual for minimum clearances for the boiler. Follow all the
installation instructions as presented in the Gas 220 Ace Installation, user and service manual,
Boiler gas union
Collector gas union
Flow pipe kit
Gas pipe kit
Gas isolating valve
Flexible pipe
Collector flow union
Safety valve
Isolating valve
Boiler flow union
Flexible pipe
Collector return union
Boiler return union
Return pipe kit
Isolating valve
Check valve
Shunt pump

9
Gas 220 Ace Cascade Assembly Manual V 18042018
supplied with the boiler. (Further copies can be downloaded by visiting the company website:
remeha.co.uk)
1. Rest the flow and return collectors on the floor at approx. 240mm distance between the axis. If
the Collectors floor support stand is required, it must be mounted at this stage and it will also
be used for adjusting the distance between collectors. Do not tighten the collector’s brackets
at this stage.
2. Fit the Flow pipe kit to the Flow collector and fasten the flow half union onto the collector
connection using the 2” gasket provided in the kit. Make sure that the isolating valve lever is in
the desired position before tightening the union .
3. Fit the return pipe kit to the return collector and fasten the return half union onto the collector
connection using the 2” gasket provided in the kit.
4. If the Collectors floor support stand is required, the Gas collector must also be positioned into
the brackets. The approx. distance between the axis of the return collector and gas collector is
238mm.
5. Fit the Gas pipe kit to the Gas collector and fasten the gas half union onto the collector
connection using the 1.5” gasket provided in the kit.
6. Raise the collectors and the collectors support stand assembly into position.
7. If the collector’s floor support stand is not required, fix the collectors to the wall. Make sure that
it is a solid wall, capable of bearing the collectors weight.
8. Position the Gas collector so that the Gas pipe kits will align with the boiler Gas connection.
9. Undo the 1.5” union positioned before the gas isolating valve and fit the 1.5” elbow Gas pipe
kit section using a thread sealant* onto the boiler Gas connection and fasten into position.
Fasten the gas union.
10. Position the flow and return collectors so that the flow and return pipe kits will align with the
boiler CH flow and CH return and will allow the connections with the pipe kit unions;
11. Fasten the Flow pipe kit union to the boiler CH flow using a thread sealant* and fasten the
union;
12. Fasten the Return pipe kit union to the boiler CH return using a thread sealant* and fasten the
union;
13. Check the position of the flow and return collectors and check with a spirit level that they are
horizontal. Make the necessary adjustments and tighten the collector’s brackets. Due to the
flexible pipes, small misalignments can be accommodated.
14. Position the pump bracket onto the flow collector pump bracket section using the M10 screws,
washers and nuts provided in the kit and adjust the position so that the pump collar to be
mounted between the elbow and the pump flange. Mount the collar and make the necessary
length adjustment of the threaded road so that the weight of the pump to be sustained by the
pump bracket.

10
Gas 220 Ace Cascade Assembly Manual V 18042018
15.Mount the swan neck flow and return pipes to the Flow and Return collectors using the
gaskets and the sixteen M16 screws, nuts and washers, provided with the kit. Do not
tighten the nuts at this stage because some small adjustments might be
necessary to align the swan neck pipes with the low loss header.
16. Check with a spirit level if the swan neck collectors are vertical. Make the necessary
adjustments.
17. Position the Low loss header and make the necessary adjustment using the adjustment stud.
The flow and return flanges must be aligned with the swan neck pipe flanges.
18. Connect the flow and return flanges using the gaskets and the eight M16 screws, nuts and
washers, provided in the kit.Tighten the nuts beginning with the horizontal collector flanges
and ending with the Low loss header flanges.
19. Make a final visual inspection of all joints and pipe work.
* Pipe sealant complying to BS EN 751
Adapter kit for Gas 220 Ace 160 boilers
The pipe kits are designed for the Gas 220 Ace 200, Gas 220 Ace 250 and Gas 220 Ace 300 boilers.
These boilers have R 2” male thread flow/return connections and R11/2” male thread gas connection.
The Gas 220 Ace 160 boiler has R11/4” male thread flow/return connections and R1” male thread gas
connection.
For the Gas 220 Ace 160 boiler an adapter kit is available.
Adapter kit for Flow and Return pipe kits
The adapter kit consists of two 2" Male x 11/2" Female Thread Reducer Bushing Pipe Fittings.
Flow pipe kit
Return pipe kit
Fig.3
Prior to connect the flow and return pipe kits to the Boiler CH flow and CH return,fasten the 2" Male
x 11/2" Female Thread Reducer Bushing Pipe Fittings into the flow and return pipe kits using a thread
sealant.
The flexible pipe will accommodate small misalignments.
2" Male x 1
1/2"
Female Thread
Reducer
Bushing Pipe
Fitting

11
Gas 220 Ace Cascade Assembly Manual V 18042018
Adapter kit for Gas pipe kit
The adapter kit consists of a 1” pipe-work section that will replace the equivalent 11/2” pipe-work
section from the standard kit.
The replacement section has a 2” half union that will allow the connection to the standard gas pipe kit
section connected to the gas collector. See following page for further information.
Standard gas pipe kit Gas kit adapter
Fig.4
Fasten the Gas adapter section to the Boiler gas connection using athread sealant*.
Connect the half union of the gas adapter section to the half union of the standard gas pipe kit
section, connected to the gas collector.
* Pipe sealant complying with BS EN751
Half union
Gas adapter section

12
Gas 220 Ace Cascade Assembly Manual V 18042018
IMPORTANT NOTICE
Before fitting the Flow pipe kit to the Flow collector please check that the Safety valve is mounted in
the correct position. The Safety valve must be positioned after the Boiler flow union. The safety valve
shall not be positioned after an isolating valve.
Fig. A Fig. B
(CORRECT) (INCORRECT)
If the Safety valve is positioned in error, as per fig.B, before connecting the Flow pipe kit to the Flow
collector, you must undo the Boiler flow union and the Collector flow union and reverse the isolating
valve-flexible pipe-safety valve assembly, as per fig A.
The two half unions have the same 2” size and can be threaded onto the 2” half unions from the boiler
connection and collector connection.

13
Gas 220 Ace Cascade Assembly Manual V 18042018
Connecting the boiler circulating pump
The boiler circulating pump is a Grundfos Magna 1 40-60 F. The maximum power consumption of the
pump is 194 watts (Maximum 1.56A) 230V 50Hz. The pump must be connected via a pump
relay/ contactor (supplied loose).
Wiring Connections tothe boiler pump
The supplied Grundfos Magna 1 40 –60F pump must be connected to the boiler via a pump relay /
contactor.The “switching signal to the relay / contactor” is supplied by the connections marked
“pump”(see below) important note, the maximum power consumption is 300VA.The pump power
supply must be wired to a suitable sized fused spur.
The location of the standard PCB can be found within the top mounted control panel fitted to the
boiler.
Typical example of wiring a relay / pumpcontactor to the Gas 220 Ace boiler panel

14
Gas 220 Ace Cascade Assembly Manual V 18042018
Pre Boiler Commissioning
Warning : Initial commissioning must be done by a qualified professional.
The cascade kits are pressure tested in the factory before delivery, however due to a number of joints
made during the assembly it’s required that a further pressure test is carried-out on completion of the
assembly of the hydraulic pipework.
Complete a gas strength / soundness test of the gas circuit including the Gas collector connections in
accordance with IGE/UP/1A.
Commissioning
Follow the commissioning procedure from chapter 7 of the Gas 220 Ace Installation, user and
service manual.
Reference Guide
Gas 220 Ace Cascade Pipe Size Matrix
The cross over point from using DN100 pipe kits to DN150 pipe kits is when the total heat output is
above 1250kW. Total boiler outputs below 1250kW will use the DN100 Kits.
No of
Boilers
Total
KW
In Line
Kits
Remeha
Kit
Reference
Items Supplied in Kit.
1 X Gas
220 - 160
152.1
DN 100
KTSGA1L
LLH10+1GA10+160ADAP
1 X Gas
220 - 200
194.4
DN 100
KTSGA1L
LLH10+1GA10
1 X Gas
220 - 250
243.3
DN 100
KTSGA1L
LLH10+1GA10
1 X Gas
220 - 300
290.9
DN 100
KTSGA1L
LLH10+1GA10
2 X Gas
220 - 160
304.2
DN 100
KTSGA2L
LLH10+2GAL10+(2X160ADAP)
2 X Gas
220 - 200
388.8
DN 100
KTSGA2L
LLH10+2GAL10
2 X Gas
220 - 250
486.6
DN 100
KTSGA2L
LLH10+2GAL10
2 X Gas
220 - 300
581.8
DN 100
KTSGA2L
LLH10+2GAL10
3 X Gas
220 - 160
456.3
DN 100
KTSGA3L
LLH10+1GA10+2GAL10+(3X160ADAP)
3 X Gas
220 - 200
583.2
DN 100
KTSGA3L
LLH10+1GA10+2GAL10
3 X Gas
220 - 250
729.9
DN 100
KTSGA3L
LLH10+1GA10+2GAL10
3 X Gas
220 - 300
872.7
DN 100
KTSGA3L
LLH10+1GA10+2GAL10
4 X Gas
220 - 160
608.4
DN 100
KTSGA4L
LLH10+2GAL10+2GAL10+(4X160ADAP)

15
Gas 220 Ace Cascade Assembly Manual V 18042018
4 X Gas
220 - 200
777.6
DN 100
KTSGA4L
LLH10+2GAL10+2GAL10
4 X Gas
220 - 250
973.2
DN 100
KTSGA4L
LLH10+2GAL10+2GAL10
4 X Gas
220 - 300
1163.6
DN 100
KTSGA4L
LLH10+2GAL10+2GAL10
5 X Gas
220 - 160
760.5
DN 100
No Kit
reference
LLH10+1GA10+2GAL10+2GAL10+(5x160ADAP)
5 X Gas
220 - 200
972.0
DN 100
No Kit
reference
LLH10+1GA10+2GAL10+2GAL10
5 X Gas
220 - 250
1216.5
DN 100
No Kit
reference
LLH10+1GA10+2GAL10+2GAL10
6 X Gas
220 - 160
912.6
DN 100
No Kit
reference
LLH10+2GAL10+2GAL10+2GAL10+6x160ADAP
6 X Gas
220 - 200
1166.4
DN100
No Kit
reference
LLH10+2GAL10+2GAL10+2GAL10
7 X Gas
220 - 160
1064.7
DN 100
No Kit
reference
LLH10+1GA10+2GAL10+2GAL10+2GAL10
+(7 x 160ADAP)
Number of
Boilers
Total
KW
In Line
Kits
Remeha Kit
Reference
Items Supplied in Kit.
5 X Gas 220
- 300
1455
DN 150
No Kit
reference
LLH15+1GA15+2GAL15+2GAL15
6 X Gas 220
- 250
1500
DN 150
No Kit
reference
LLH15+2GAL15+2GAL15+2GAL15
6 X Gas 220
- 300
1745
DN 150
No Kit
reference
LLH15+2GAL15+2GAL15+2GAL15
7 X Gas 220
- 200
1361
DN 150
No Kit
reference
LLH15+1GAL15+2GAL15+2GAL15+2GAL15
7 X Gas 220
- 250
1703
DN 150
No Kit
reference
LLH15+1GAL15+2GAL15+2GAL15+2GAL15
7 X Gas 220
- 300
2036
DN 150
No Kit
reference
LLH15+1GAL15+2GAL15+2GAL15+2GAL15
8 X Gas 220
- 160
1217
DN 150
No Kit
reference
LLH15+2GAL15+2GAL15+2GAL15+2GAL15+
(8 x 160ADAP)
8 X Gas 220
- 200
1555
DN 150
No Kit
reference
LLH15+2GAL15+2GAL15+2GAL15+2GAL15
8 X Gas 220
- 250
1946
DN 150
No Kit
reference
LLH15+2GAL15+2GAL15+2GAL15+2GAL15
8 X Gas 220
- 300
2327
DN 150
No Kit
reference
LLH15+2GAL15+2GAL15+2GAL15+2GAL15
2 X Elbows
90deg
NA
DN 150
TSDN159EL
Optional Extra

16
Gas 220 Ace Cascade Assembly Manual V 18042018
Back to Back Cascade DN100 and DN150
Number of
Boilers
Total
KW
Back to
Back
Kits
Remeha
Kit
Reference
Items Supplied in Kit.
2 X Gas
220 - 160
304.2
DN 100
KTSGA2B
LLH10+2GAB10+(2X160ADAP)
2 X Gas
220 - 200
388.8
DN 100
KTSGA2B
LLH10+2GAB10
2 X Gas
220 - 250
486.6
DN 100
KTSGA2B
LLH10+2GAB10
2 X Gas
220 - 300
581.8
DN 100
KTSGA2B
LLH10+2GAB10
3 X Gas
220 - 160
456.3
DN 100
KTSGA3B
LLH10+1GA10+2GAB10+(3X160ADAP)
3 X Gas
220 - 200
583.2
DN 100
KTSGA3B
LLH10+1GA10+2GAB10
3 X Gas
220 - 250
729.9
DN 100
KTSGA3B
LLH10+1GA10+2GAB10
3 X Gas
220 - 300
872.7
DN 100
KTSGA3B
LLH10+1GA10+2GAB10
4 X Gas
220 - 160
608.4
DN 100
KTSGA4B
LLH10+2GAB10+2GAB10+(4X160ADAP)
4 X Gas
220 - 200
777.6
DN 100
KTSGA4B
LLH10+2GAB10+2GAB10
4 X Gas
220 - 250
973.2
DN 100
KTSGA4B
LLH10+2GAB10+2GAB10
4 X Gas
220 - 300
1163.
6
DN 100
KTSGA4B
LLH10+2GAB10+2GAB10
5 X Gas
220 - 160
760.5
DN 100
KTSGA5B1
60-250
LLH10+1GA10+2GAB10+2GAB10+(5x160ADAP)
5 X Gas
220 - 200
972.0
DN 100
KTSGA5B1
60-250
LLH10+1GA10+2GAB10+2GAB10
5 X Gas
220 - 250
1216.
5
DN 100
KTSGA5B1
60-250
LLH10+1GA10+2GAB10+2GAB10
6 X Gas
220 - 160
912.6
DN100
KTSGA6B1
60-200
LLH10+2GAB10+2GAB10+2GAB10+(6x160ADAP)
6 X Gas
220 - 200
1166.
4
DN100
KTSGA6B1
60-200
LLH10+2GAB10+2GAB10+2GAB10
7 X Gas
220 - 160
1064.
7
DN100
KTSGA7B1
60
LLH10+1GAB10+2GAB10+2GAB10+2 GAB10+
(7 X 160 ADAP)

17
Gas 220 Ace Cascade Assembly Manual V 18042018
Number of
Boilers
Total
KW
Back to
Back
Kits
Remeha
Kit
Reference
Items Supplied in Kit.
5 X Gas
220 - 300
1455
DN 150
KTSA5B30
0
LLH15+1GA15+2GAB15+2GAB15
6 X Gas
220 - 250
1500
DN 150
KTSGA6B2
50-300
LLH15+2GAB15+2GAB15+2GAB15
6 X Gas
220 - 300
1745
DN 150
KTSGA6B2
50-300
LLH15+2GAB15+2GAB15+2GAB15
7 X Gas
220 - 200
1361
DN 150
KTSGA7B2
00-300
LLH15+1GA15+2GAB15+2GAB15+2GAB15
7 X Gas
220 - 250
1703
DN 150
KTSGA7B2
00-300
LLH15+1GA15+2GAB15+2GAB15+2GAB15
7 X Gas
220 - 300
2036
DN 150
KTSGA7B2
00-300
LLH15+1GA15+2GAB15+2GAB15+2GAB15
8 X Gas
220 - 160
1217
DN 150
KTSGA8B
LLH15+2GAB15+2GAB15+2GAB15+2GAB15
+ (8 X160ADAP)
8 X Gas
220 - 200
1555
DN 150
KTSGA8B
LLH15+2GAB15+2GAB15+2GAB15+2GAB15
8 X Gas
220 - 250
1946
DN 150
KTSGA8B
LLH15+2GAB15+2GAB15+2GAB15+2GAB15
8 X Gas
220 - 300
2327
DN 150
KTSGA8B
LLH15+2GAB15+2GAB15+2GAB15+2GAB15
2 X Elbows
90deg
NA
DN 150
TSDN159E
L
Optional Extra
List of Materials Supplied with DN150 Cascade Kits
LLH15
No Description Pcs
1 Low Loss Header 1
2 Swan Neck Flow Pipe 1
3 Swan Neck Return Pipe 1
4 Blind Flanges DN150 for Flow and Return Collectors 2
5 Blind Flange DN100 for gas collector 1
6 DN150 Gaskets 4
7 Gas DN100 Gaskets 1
8 M16 x 70 Screws 32
9 M16 Nuts 32
10 A16 Washers 32

18
Gas 220 Ace Cascade Assembly Manual V 18042018
1GA15
No Description Pcs
1 Flow Collector DN150 for one Boiler 1
2 Return Collector DN150 for one Boiler 1
3 Gas Collector DN100 for one Boiler 1
4 Flow Pipe Kit 1
5 Return Pipe Kit 1
6 Gas Pipe Kit 1
7 DN150 Gasket 2
8 DN100 1
9 2” Union Gaskets 2
10 1.5” Rubber Gasket 1
11 M20 X 80 Screws 24
12 M20 Nuts 24
13 A20 Washers 24
14 Collectors Support Stands 2
15 Mounting Bolt Kit 8
List of Materials Supplied with DN150 Cascade Kits
2GAL15
No Description Pcs
1 Flow Collector DN150 for two boiler in line 1
2 Return Collector DN150 for two boilers in line 1
3 Gas Collector DN100 for two boiler in line 1
4 Flow Pipe Kit 2
5 Return Pipe Kit 2
6 Gas Pipe Kit 2
7 DN150 Gasket 2
8 DN100 Gasket 1
9 2” Union Gasket 4
10 1.5” Union Gasket 2

19
Gas 220 Ace Cascade Assembly Manual V 18042018
11 M20 X 80 Screws 24
12 M20 Nuts 24
13 A20 Washers 24
14 Collectors Support Stands 2
15 Mounting bolt Kit 8
2GAB15
No Description Pcs
1 Flow Collector DN150 for two boilers back to back 1
2 Return Collector DN150 for two boilers back to back 1
3 Gas Collector DN100 for two boilers back to back 1
4 Flow Pipe Kit 2
5 Return Pipe Kit 2
6 Gas Pipe Kit 2
7 DN100 Gasket 2
8 DN65 Gasket 1
9 2” Union Gasket 4
10 1.5” Union Gasket 2
2GAB15 Cont’d
No Description Pcs
11 M20 X 80 Screws 24
12 M20 Nuts 24
13 A20 Washers 24
14 Collectors Support Stands 2
15 Mounting Bolt Kit 8

20
Gas 220 Ace Cascade Assembly Manual V 18042018
List of Materials Supplied with DN100 Cascade Kits
LLH10
No Description Pcs
1 Low Loss Header 1
2 Swan Neck Flow Pipe 1
3 Swan Neck Return Pipe 1
4 Blind Flanges DN100 for flow and Return Collectors 2
5 Blind Flange DN65 for Gas Collector 1
6 DN100 Gaskets 4
7 Gas DN65 Gasket 1
8 M16 X 70 Screws 32
9 M16 Nuts 32
10 A16 Washers 32
1GA10
No Description Pcs
1 Flow Collector DN100 for one Boiler 1
2 Return Collector DN100 for one Boiler 1
3 Gas Collector DN65 for one Boiler 1
4 Flow Pipe Kit 1
5 Return Pipe Kit 1
6 Gas Pipe Kit 1
7 DN100 Gasket 2
8 DN65 Gasket 1
9 2” Union Gaskets 2
10 1.5” Rubber Gasket 1
11 M16 X 70 Screws 24
12 M16 Nuts 24
13 A16 Washers 24
14 Collectors Support Stands 2
15 Mounting Bolt Kit 8