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Summary of Contents for Strebel S-CBX 85
- Page 1 STREBEL S-CBX Cascade Kits Models 85 - 105 - 125 - 155 Installation & Operating Manual 2 x 85 up to 6 x 155 Please read and understand before commencing installation and leave the manual with the customer for future reference...
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Page 3: Table Of Contents
Contents INTRODUCTION............................4 INSTALLATION PROCEDURE CASCADE CONFIGURATION .............. 5 DETERMINE POWER REQUIRED FOR THE CASCADE CONFIGURATION ........6 CALCULATE DIMENSIONS AND SPACE OF CASCADE CONFIGURATION ........8 EXPLANATION OF PARTS AND GROUPS ..................11 CONNECTING SETS ..........................12 HYDRAULIC AND GAS HEADER GROUP .................... 13 Headers ............................ -
Page 4: Introduction
Strebel Ltd can supply standard cascade systems with mounting frame, piping and low loss headers for up to six boilers depending on the range. Larger amounts of boilers in a cascade combination are possible but require a dedicated system which must be designed separately. -
Page 5: Installation Procedure Cascade Configuration
2. Installation Procedure Cascade Configuration In order to completely install a cascade configuration of two or more boilers, the following procedure should be observed: 1. Calculate the total required amount of power for the cascade configuration and determine the number of boilers necessary in the cascade configuration to achieve the required power. This is described in detail in chapter 3. -
Page 6: Determine Power Required For The Cascade Configuration
If the required power in kW is known, consult Table 3.1 (below) in order to determine which combination of boilers can be applied to achieve the required power. Total Total Number S-CBX 85 S-CBX 105 S-CBX 125 S-CBX 155 Power *... - Page 7 2) In case the required power is calculated at 440 kW, the table will show you that the required cascade type and that the cascade configuration should have 4 boilers: one S-CBX 85 boiler, two S-CBX 105 boilers and one S-CBX 155 boiler.
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Page 8: Calculate Dimensions And Space Of Cascade Configuration
4. Calculate Dimensions and Space of Cascade Configuration In this chapter is explained how to determine the dimensions of the cascade configuration and how much space is required in the room where the cascade configuration will be installed. EHS.T0200.5050 Figure 4.1 Dimensions front view... - Page 9 EHS.T0200.5050 Figure 4.2 Dimensions: Side views After you have determined which cascade configuration will be applied and therefore how many boilers must be combined in the cascade configuration, the next step is to determine the total dimensions of the cascade configuration and the space required for the cascade configuration.
- Page 10 Number of Boilers 2 Boilers 3 Boilers 4 Boilers (up to 360 kW) L1 (length frame) 1030 1520 2010 L2 (total length incl. header) 1428 1918 2408 L3 (length low loss header) H1 (height gas) H2 (height header coupling) H3 (height couplings) DN 65 PN6 (2½...
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Page 11: Explanation Of Parts And Groups
5. Explanation of Parts and Groups Each cascade configuration exists of the following parts and groups: The number of boilers as selected in chapter 3. The frame group (with locking plates) as determined by the number of boilers. An external pump for each boiler. Connecting sets to connect the boilers to the hydraulic and gas header groups. -
Page 12: Connecting Sets
6. Connecting Sets Supply Connecting Set Gas Connecting Set Connection to boiler. Connection to boiler. Connection pressure relieve valve. Ball valve. Ball valve. Coupling to supply header. Coupling to gas header. Return Connecting Set with External Pump Connection to boiler. Pump location. -
Page 13: Hydraulic And Gas Header Group
7. Hydraulic and Gas Header Group Headers 1. Gas header (yellow marking) 2. Supply header (red marking) 3. Return header (blue marking) Figure 7.1 Parts hydraulic and gas header group Support Beam and Support Brackets Seal plug U-bolt U-bolt Support bracket gas header Support bracket... -
Page 14: Headers And Connecting Sets
Headers and Connecting Sets 1. Gas connection set 2. Supply connection set 3. Return connection set blue E67.5020.002 Figure 7.3 Headers and connecting sets Variant sizes Depending on the cascade configuration the headers come in the following size varieties: Header Varieties Gas header DN50 / DN80... -
Page 15: Mounting The Frame
8. Mounting the Frame Frame elements The first part of the actual installation of the cascade configuration is assembling the frame on which the boilers will be hung. The basic frame exists of the following elements: • L-shaped stands • Top beam •... -
Page 16: Procedure For Mounting The Frame
The number of elements to be mounted depends on the number of boilers which have to be combined. # L- # Top # In-between # Frame Width # Boilers stands beams beams braces beams 440 mm 930 mm 1420 mm 930 mm exists of a 930 mm... -
Page 17: Mounting The Gas Header
9. Mounting the Gas Header Attention! All lines/piping must be mounted free of tension. The weight of all the components should be supported separately from the boiler so there is no force on the connections. Attention! During mounting of the gas header group, it is very important that the position of the support beam as well as the support brackets of the headers allow for some play (tolerance) for a neat installation. -
Page 18: Mounting The Boilers On The Frame
10. Mounting the Boilers on the Frame 1. Before mounting the boiler on the frame, ensure that the frame is level both horizontally and vertically. If necessary, adjust with the adjusting bolts on the lower side of the frame (see Figure 10.1). 2. -
Page 19: Mounting The Hydraulic Group And The Connecting Sets
11. Mounting the Hydraulic Group and the Connecting Sets After the boiler has been mounted on the frame, the hydraulic group and the connecting sets must be mounted. Attention! All lines/piping must be mounted free of tension. The weight of all the components should be supported separately from the boiler so there is no force on the connections. -
Page 20: Mounting The Low Loss Headers
12. Mounting the Low Loss Headers After mounting the hydraulic and gas header group and the connecting sets to the boilers, the low loss header must be mounted to the supply and return headers. Figure 12.1 Low loss header Depending on the configuration of the cascade setup, one of the following low loss headers can be mounted: Type Size Used for... -
Page 21: Determine Managing And Depending Boilers
Overflow. Attention! The hydraulic piping of the Strebel Ltd cascade systems already contains non-return valves underneath each boiler. When other hydraulic systems are used, non-return valves must be fitted in the return pipe of each boiler. The Installation & Service Manual of the S-CBX boiler series provides you with the necessary installation schemes and requirements to complete the installation. -
Page 22: Mount The Flue Gas And Air Supply Systems
– Part 2: Chimneys serving more than one heating appliance.” Strebel Ltd can advise you on the software to be used for doing these calculations. Do not attempt to design common flue systems without the appropriate software and training. -
Page 23: Set Parameters
16. Set Parameters Before commissioning the cascade installation, several parameters have to be changed in order to have the boilers operate in unison as a cascade configuration. These parameters can be programmed on each boiler itself in the display of the boiler (so without the use of an external computer). -
Page 24: Accessories
18. Accessories To complete your cascade configuration the following accessories are available: Sensors Details Article nr. Remarks Outside air temperature sensor 12kOhm@25ºC E04.016.306 Optional External flow temperature sensor low loss header 10kOhm@25ºC E04.016.304 Required Table 18.1 Accessories 19. References 19.1 List of figures Figure 1.1 Typical cascade configuration ...................... -
Page 25: Appendix A - Cascade Parts
20. Appendix A – Cascade Parts The following drawings give an overview of parts used in a cascade configuration. Top view E67.5020.002 Front view... - Page 26 The exact amount for each part in the cascade configuration varies and depends on the cascade type and the number of boilers in the cascade set. Furthermore, headers and connecting set couplings come in different sizes, depending on the cascade configuration (see Table 4.1, Table 4.2 and Table 4.3).
- Page 28 Strebel Ltd Unit 10, Invincible Industrial Estate, Invincible Road, Farnborough, Hampshire, GU14 7QU. 01276 685422 01276 685405 info@strebel.co.uk www.strebel.co.uk Further information on our complete product range is available from our website. CAST IRON – CONDENSING – STEEL SHELL – WATER HEATERS – RENEWABLES...
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