Hoval ST1 Instructions For Installation, Commissioning And Maintenance
Rotary heat exchangers
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- Page 1 H o v a l e n e r g y r e c o v e r y Rotary heat exchangers Instructions for installation, commissioning and maintenance Hoval | Responsibility for energy and environment...
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Page 2: Table Of Contents
Rotary heat exchangers Content 1 Use 8 Installation in the air handling unit 1.1 Intended use ....3 8.1 Requirements for the installation site ..34 1.2 User group . -
Page 3: Use
1.1 Intended use Rotary heat exchangers Hoval rotary heat exchangers are energy recovery units for installation in venti- lation and air-conditioning units and for process engineering applications. They transfer energy through a rotating storage mass, which is alternately heated by one air stream and cooled by the other. -
Page 4: Safety
Rotary heat exchangers Safety 2 Safety 2.1 Symbols Caution This symbol warns against risk of injury. Please heed all instructions designated by this symbol to prevent injuries and/or death. Attention This symbol warns against property damage. Please heed the respective instructions to prevent risk of damage to the unit and its functions. -
Page 5: Delivery
Rotary heat exchangers Delivery 3 Delivery 3.1 Scope of delivery Rotary heat exchangers are delivered on pallets and packaged in film. Exchangers with stronger packaging are additionally protected with wood fibre boards and a wooden crate. The scope of delivery includes: 1-piece rotary heat exchangers with casing: ■... -
Page 6: Identification And Test
■ Wheel orientation ■ Wheel diameter ■ Casing type ■ Drive system ■ Purge sector ■ Options Type: ST1-LL-SV-1200-PR-V7-A1-5 Typ: W1400,H1400,CCP,SHM,RG3 Serial no.: 1201620906-020-01 Serie-Nr.: Fig. 5: Type label Net weight: Max. temperatur: Nettogewicht: Max. Temperatur: °C Max. pressure difference: Purchase order no.:... -
Page 7: Tools And Aids
Rotary heat exchangers Tools and aids 4 Tools and aids The following tools and aids are required for assembly: ■ Electrical screwdriver ■ Drill Ø 3.3 mm ■ Pop rivet tool ■ Set of Allen keys ■ Scissors ■ Spanner key set 10 - 19 mm ■... -
Page 8: Lifting Exchangers With Sm Casing
Rotary heat exchangers Lifting the exchanger 5.2 Lifting exchangers with SM casing ■ Use lifting gear with sufficient load-bearing capacity. ■ Hook the snap hooks of the lifting gear into the lifting eyes on both sides of the casing. ■ Protect the exchanger casing with approx. - Page 9 Rotary heat exchangers Lifting the exchanger Lifting exchangers packed together Several exchangers with stronger packaging are delivered side by side on a pallet. ■ On the freely accessible side, hook the snap hooks of the lifting gear into the lifting eyes of the casing. ■...
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Page 10: Lifting Exchangers With Sp Casing
Rotary heat exchangers Lifting the exchanger 5.3 Lifting exchangers with SP casing ■ Use lifting gear with sufficient load-bearing capacity. ■ Hook the snap hooks of the lifting gear into the lifting eyes on both sides of the casing. ■ Protect the exchanger casing with approx. -
Page 11: Lifting Exchangers With Pr Casing
Rotary heat exchangers Lifting the exchanger 5.4 Lifting exchangers with PR casing ■ Use lifting gear with sufficient load-bearing capacity. ■ Screw the supplied lifting kits into the profile casing as shown below. ■ Hook the snap hooks of the lifting gear into the lifting kits on both sides. ■... -
Page 12: Lifting Wheels Without Casing
Rotary heat exchangers Lifting the exchanger 5.5 Lifting wheels without casing ■ Use lifting gear with sufficient load-bearing capacity. ■ The storage mass has 2 opposite drilled holes on the outside for lifting the wheel. – Use metal rods (preferably smooth shafts) with 10 – 12 mm diameter and approx. -
Page 13: Assembly Of Segmented Exchangers
Rotary heat exchangers Assembly of segmented exchangers 6 Assembly of segmented exchangers Caution Risk of injury caused by falling load, tilting of the exchanger or improper handling. During all work: – Wear protective equipment. – Do not stand under suspended loads. –... - Page 14 Rotary heat exchangers Assembly of segmented exchangers SP casing 4 x M5 x 16 4 x M5 x 16 8 x M5 x 40 Fig. 17: Assembly of SP casings PR casing for wheel diameters up to 3799 mm 4 x M8 x 12 4 x M8 x 12 8 x M8 x 12 Fig.
- Page 15 Rotary heat exchangers Assembly of segmented exchangers PR casing for wheel diameters 3800…4200 mm 8 screws M12 x 180 (top) 8 nuts M12 (bottom) 16 washers Fig. 19: Assembly of PR casings (wheel Ø 3800…4200 mm) Radial seal in PR casings The radial seal is pre-mounted in PR casings in both halves of the casing.
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Page 16: Radial Walls
Rotary heat exchangers Assembly of segmented exchangers 6.2 Radial walls Caution Risk of injury due to uncontrolled movements of radial walls. Secure the rotor position during all work (e.g. with boards). Fig. 22: Securing the rotor position Mounting the radial walls 3 + 4 ■... - Page 17 Rotary heat exchangers Assembly of segmented exchangers Checking the radial walls 3 + 4 ■ Check the axial run-out of hub and radial walls: – Measure the distance A and B at the positions – Turn the hub with the radial walls by 90°. –...
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Page 18: Storage Mass
Rotary heat exchangers Assembly of segmented exchangers 6.3 Storage mass Caution Risk of injury due to uncontrolled movements of radial walls and segments. Secure the rotor position during all work. Use ropes or tension bands with pulley block, for example, for controlled rotation. Labelling of segments The segments of the storage mass are numbered on the outside. - Page 19 Rotary heat exchangers Assembly of segmented exchangers Mounting of segment 1 ■ Secure the rotor position. ■ Push segment 1 between the radial walls up to the hub. – Make sure that the milled outer edges of the segment at the top and bottom are within the curved edges of the radial walls.
- Page 20 Rotary heat exchangers Assembly of segmented exchangers Mounting of peripheral plate 1 ■ Move the peripheral plate 1 into position: – Align the edge with the slot facing up and the edge with the hole facing downward. ■ Loosely insert one screw and washer each into the slot at the top and into the hole at the bottom.
- Page 21 Rotary heat exchangers Assembly of segmented exchangers Mounting of additional segments ■ Mount and secure the remaining segments and peripheral plates in the same way. Completion of the periphery ■ Connect the last peripheral plate with the first one. – Insert a threaded rod into the connecting eyes. –...
- Page 22 Rotary heat exchangers Assembly of segmented exchangers Adjustment If necessary, adjust the inclination of the wheel in the casing. SM casing from wheel Ø 1800 mm, SP casing ■ Unscrew the cover plates of the middle beam on the left and right of the hub to gain access to the adjusting screws.
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Page 23: Purge Sector
Rotary heat exchangers Assembly of segmented exchangers 6.4 Purge sector General notices ■ Depending on the exchanger design, the purge sector is supplied loose or pre-assembled at the factory. – Supplied loose: Mount the purge sector as shown below. – Pre-assembled: Check that the purge sector is correctly positioned for the actual installation position of the exchanger. - Page 24 Rotary heat exchangers Assembly of segmented exchangers ■ Purge sector part A ■ Purge sector part B ■ Seal Fig. 35: SM casing and SP casing with 2-piece purge sector PR casing ■ The purge sector for PR casings is always 1-part. Fig.
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Page 25: Seal
Rotary heat exchangers Assembly of segmented exchangers 6.5 Seal Middle beam seal The middle beam seal is pre-assembled in all casings. Proceed as follows for correct adjustment: ■ Loosen the screws securing the brush seal to the middle beam or purge sector. ■... -
Page 26: Drive System
Rotary heat exchangers Assembly of segmented exchangers 6.6 Drive system Belt Mount the belt as follows: ■ If the drive motor is installed on a bracket: – Insert a screwdriver into one of the eyelets on the motor bracket and lift the motor bracket. - Page 27 Rotary heat exchangers Assembly of segmented exchangers Controller ■ Install the controller in a suitable position. ■ SP casing: – Screw the controller onto the retaining plate. – The position can be adjusted in height using the rail. ■ PR casing: –...
- Page 28 Rotary heat exchangers Assembly of segmented exchangers Rotation guard Mount the rotation guard in the drive corner as follows: ■ Rivet the holder to the end wall of the exchanger (3 pop rivets 4.8 x 9.5). – The holes are pre-punched. ■...
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Page 29: Assembly Of Half Mounted Exchangers
Rotary heat exchangers Assembly of half mounted exchangers 7 Assembly of half mounted exchangers Caution Risk of injury caused by falling load, tilting of the exchanger or improper handling. During all work: – Wear protective equipment. – Do not stand under suspended loads. –... -
Page 30: Casing
Rotary heat exchangers Assembly of half mounted exchangers 7.1 Casing ■ Place the bottom half of the casing on a level surface. ■ Unscrew the hub cover plates on both sides. Fig. 46: Dismantling the hub cover plates ■ Bring the casing halves into the correct position in relation to each other. –... -
Page 31: Radial Walls
Rotary heat exchangers Assembly of half mounted exchangers 7.2 Radial walls Caution Risk of injury due to uncontrolled movements of radial walls. Secure the rotor position during all work (e.g. with boards). Fig. 47: Securing the rotor position Mounting the radial walls ■... -
Page 32: Storage Mass
Rotary heat exchangers Assembly of half mounted exchangers 7.3 Storage mass Caution Risk of injury due to uncontrolled movements of radial walls and segments. Secure the rotor position during all work. Use ropes or tension bands with pulley block, for example, for controlled rotation. Mounting the segments and peripheral plates ■... -
Page 33: Purge Sector, Seal, Drive System
Rotary heat exchangers Assembly of half mounted exchangers Aligning the wheel ■ Loosen the screws of the radial walls pre-mounted at the factory (4 screws in each case). ■ Turn the wheel and align the radial walls and segments so that there is a flat surface on the left and right. -
Page 34: Installation In The Air Handling Unit
Rotary heat exchangers Installation in the air handling unit 8 Installation in the air handling unit Caution Risk of injury caused by falling load, tilting of the exchanger or improper handling. During all work: – Wear protective equipment. – Do not stand under suspended loads. –... -
Page 35: Horizontal Installation
Rotary heat exchangers Installation in the air handling unit 8.3 Horizontal installation Important for the horizontal installation position – Support the casing over a wide area. – Provide additional support for the shaft with sufficient strength. The maximum permissible deflection of the support is 2 mm. –... -
Page 36: Electrical Connection
The supply voltage of the controllers is 1 × 230 V. ■ Detailed instructions for the various controllers can be downloaded from the website (www.hoval-energyrecovery.com). Drive system V0 ■ Connect the drive motor to a customer-side controller with an output voltage of 3 ×... -
Page 37: Commissioning
Does the wheel's direction of rotation correspond to the stuck-on directional arrow? If necessary, correct the electrical connection. Does the wheel reach the optimum speed? Function max. 12 min for design ST1 / SC1 / SE3 ■ check max. 20 min for design ST3 / SH1 / HM1 ■... -
Page 38: Monitoring Work After 3 Weeks
Rotary heat exchangers Maintenance and repair 10.2 Monitoring work after 3 weeks ■ Retighten the clamping screws of the peripheral plates (see section 'Completion of the periphery' on page 21). ■ Check and adjust the seals and drive belt if necessary. ■... -
Page 39: Spare Parts
Direct the water jet at a right angle to the inflow surface. Table 5: Cleaning methods for rotary heat exchangers 11.3 Spare parts Hoval recommends the use of original spare parts. You can download the spare parts list from the website (www.hoval-energyrecovery.com). 4 219 613-en-03... -
Page 40: Replacement Of The Brush Seal
Rotary heat exchangers Maintenance and repair 11.4 Replacement of the brush seal Middle beam seal Proceed as follows to replace the middle beam seal: ■ Loosen the screws securing the brush seal to the middle beam or purge sector. ■ Replace the old seal in the retaining plate with the new one. -
Page 41: Replacement Of The V-Belt
Rotary heat exchangers Maintenance and repair 11.5 Replacement of the V-belt ■ To replace the V-belt, proceed as described in section 'Belt' on page 26. 11.6 Servicing Please contact the manufacturer's customer service if needed. 4 219 613-en-03... - Page 42 4 219 613-en-03...
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- Page 44 555 93 Jönköping Sweden Tel. +46 36 375660 Fax +46 36 375668 info.se@hoval.com www.hoval-energyrecovery.com China Hoval Oriental Beijing Heating Tech Co., Ltd Rm.1408 Guangming Hotel Liangmaqiao Road Chaoyang District 100125 Beijing P.R. China Tel: +86 10 646 36 878 Fax: +86 10 646 42 270 info@hoval.com.cn...
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