Daikin Easdale 25 Manual

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Installation, Operation and
Maintenance Instructions
For The Easdale 25 & 50
Air Handling Units

Daikin Applied (UK) Ltd.
REV A –PAGE 9. SECTION 11 ADDED. 11/03/14 Page 2 of 37
Contents Index
Page 3 - 5 Health and Safety
Page 4 Cautionary Notes
Page 5 Disposal of Redundant Materials
Page 6 Shipping
Page 7 - 8 Lifting, Off Loading and Handling
Page 8 Location
Page 9 Assembly
Page 9 Section Open Face Corner Bracing
Page 10 Fan Temporary Restraints
Page 11 - 12 Storage / Static Maintenance
Page 12 Standby Motors
Page 13 Electrical Connections
Page 13 Ductwork Connections
Page 14 - 16 Commissioning and Testing
Page 16 Drive Belts
Page 17 - 18 Belt Tensioning Instructions/ Pulley Alignment Instructions
Page 21 - 22 Maintenance Procedures
Component Installation & Maintenance:-
Page 23 Fans
Page 24 Electric Motors
Page 24 Electric Motors Lifting Beam
Page 24 - 26 Electric Coils
Page 26 - 28 Heating & Cooling Coils
Page 26 & 29 Drain Tray Connections & Drain Traps
Page 29 - 30 Condensate Removal from Steam Coils
Page 32 Plate Heat Exchangers
Page 32 Dampers
Page 32 - 33 Filters
Page 34 Gas Burners
Page 34 Humidifiers
Page 34 Inverters
Page 34 Thermal Wheels
Page 35 Fault Finding
Page 36 Invalidation of Guarantee
Page 36 Contact Telephone Numbers
Page 37 Environmental Information

Daikin Applied (UK) Ltd.
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Health and Safety
Unit Construction
All galvanised, stainless steel, plastisol & aluminium used in the construction of these
units is purchased and in line with the relevant British & European standards.
Working Conditions and Pre-Installation Check
This section deals with the hazards that could be encountered when any work is carried
out on the equipment for which this manual is written.
Therefore the following points should be observed to avoid any injuries or health
hazards.
The unit shall be checked to ensure that:
It is suitable for the electrical supply available.
It is suitable for the atmosphere or the environment in which it is to be used.
It is suitable for the working media, temperature and pressure for which it is to be used.
It is manually isolated from the mains supply before any work is carried out.
DO NOT enter the unit while the fans are running.
Electrical equipment is earthed to comply with all I.E.E. Regulations and local bye-laws.
All quoted fan volumes & noise levels are provided in accordance with relevant fan
manufactures standards and are subject to industrial accepted tolerances.
Insertion losses are derived from static tests carried out in accordance with
BS4718:1971.
Effective insertion loss in AHU application will be affected by airflow conditions/noise
regeneration and component losses.
The data should not be arithmetically subtracted from the fan Lw to obtain the inlet &
outlet levels. Reference must be made to Daikin Applied (UK) Ltd.
When starting the electric motor(s) the procedure as laid down in this manual is fully
carried out.
The procedure for removing and replacing belts and filter media (bags or panels) are
fully carried out as laid down in this manual or the supplier's literature.
Note:-

Daikin Applied (UK) Ltd.
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1) The equipment must only be installed or operated by trained and competent
personnel.
2) The equipment must only be used for its intended purpose and any deviations
from its intended use may result in an unsafe condition for which Daikin Applied
(UK) Ltd.will not be held responsible.
3) The equipment must not be used where flammable dust or vapours may be
present.
4) The equipment must not be modified in any way. Daikin Applied (UK) Ltd. will
not be held responsible for any unauthorised modifications.
5) Lists of recommended spares are available on request and any spare parts
should only be obtained from Daikin Applied (UK) Ltd.
Cautionary Notes
No part of the unit shall be dismantled until a careful study has been made of this
manual.
This manual deals in detail with shipping, installation, commissioning and servicing and
must be strictly adhered to.
Wherever any maintenance or work is done within the unit, the interior shall be left clean
and all access panels shall be correctly fastened.
Note! Before locking all access panels ensure that no personnel or tools etc are
inside unit
Bearing Damage - Cautionary Note
During the interval between delivery and commissioning the drive belts should be
slackened and the fan and motor shafts spun once every two (2) months ensuring that
they are not in the same angular position after rotation.
Water Treatment (Mandatory)
Check for any treatment that is required to the water supply for prevention of corrosion
and scaling of equipment. Information regarding the necessary action to be taken can
be obtained from the relevant Water Supply Authority, particulars of which can be found
in the Water Engineers Handbook yearly edition.

Daikin Applied (UK) Ltd.
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Safety Information
All Electrical work carried out on the Air Handling Units, must be in accordance with
the Manufacturers instructions and relevant codes & practices.

All work carried out on, or in, the Air Handling Units must be in accordance with the
client’s permit to work system.

Before starting the Air Handling Units for the first time ensure that all earthing bonds
have been made and securely fastened.

Before working on, or in, the Air Handling Units, ensure that all electrical connections
have been isolated and isolators padlocked in the OFF position.
Safety Information (continued)

Before starting the Air Handling Units, ensure that all access doors and panels are
closed and clamped shut.

When work is required inside the Air Handling Units allow at least two (2) minutes
after switching the power off before entering the Air Handling Units. This is to ensure
that all rotating parts have come to a rest.
Do not remove any drive guards unless the equipment is isolated and stationary.

Ensure that all guards are correctly replaced and secured before restarting the Air
Handling Units.
Disposal of Redundant Materials
All redundant materials must be disposed of in accordance with the relevant local and
national environmental regulations.

Daikin Applied (UK) Ltd.
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Shipping
Each unit and section will be clearly identified and each section shall be shipped as an
individual section unless otherwise stated on the General Arrangement (GA) drawing.
Each section is dispatched covered in shrink-wrapped polythene sheeting. All sharp
edges shall be protected with cardboard to stop the polythene sheeting from being
ripped. Once at Site the shrink-wrapped should be removed as it is not a protection
against the elements.
If the unit is left outside then it is the Customers responsibility to protect the unit.
Identification of units shall be placed on the outside of shrink-wrap.
Sections are normally supplied complete with an integral channel base. Should these
not be required e.g. in the case of stacked units, then the sections will be shipped on
wooden pallets.
Upon receipt of equipment a visual inspection should be made and any damage noted
on the delivery form. Particulars of any damage or short delivery should be endorsed by
the driver delivering the equipment.
No responsibility can be held for damage sustained during the unloading from the
delivery vehicle or on the site thereafter.
Any variation to the above will have cost implications. Should special arrangements or
packing be required then Daikin Applied (UK) Ltd. must be notified in sufficient time in
advance.
All claims for damage or short delivery should be advised to Daikin Applied (UK) Ltd. in
writing
within seven (7) days of receipt to the following address :-
Daikin Applied (UK) Ltd.
Bassington Lane
Cramlington
Northumberland
NE23 8AF

Daikin Applied (UK) Ltd.
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Lifting, Off Loading and Handling
Care should be taken during all handling of equipment to prevent damage. Estimated
weights of shipped sections are shown on the General Arrangement (GA) drawings.
The actual weight of the shipped sections is labelled on the polythene sheeting
It is recommended that if the units are shipped on wooden pallets that they are left in
place until the units have been correctly sited. This will help prevent site damage and
will aid handling. If this recommendation is not adhered to then it is not Daikin Applied
(UK) Ltd’s responsibility for any damage caused to the units.
1) All work must be in accordance with the Health and Safety at Work Act 1974,
relevant H.S.E. Guidance Notes and Codes of Practice. When cranes are used it is
recommended that the requirements of BS 7121 be observed.
Diagram 1 - Shows the lifting items required when lifting by crane.
Lifting, Off Loading and Handling (continued)

Daikin Applied (UK) Ltd.
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2) Only non-metal slings must be used. These must be used in conjunction with a
lifting frame / beam to ensure an even load distribution and correct positioning of
slings. Wooden packing pieces must be inserted between the sling and the
framework to avoid damage.
3) When units are mounted on a wooden pallet, they may be lifted either by a crane or
a fork lift truck, provided, in the case of the latter; it is within the limits of normal
good handling procedures.
4) The channel base, fitted underneath each section, is drilled to accept lifting bars.
When bars are used they must be mechanically locked in position to ensure that
they cannot move. The bars themselves must be both adequately sized and tested
to ensure that they are capable of safely handling the weight of the section. (See
Diagram 1)
5) All sections, particularly the fan sections, must remain level during lifting or
manhandling.
Under no circumstances should they be tilted onto their side.
6) If sections are either too heavy or too wide to use lifting bars then the channel base
is fitted with bolt on lifting brackets. Again non metal slings and lifting frame / beam
are to be used as stated above.
Location
When locating the Air Handling Unit ensure that:-
1) Sufficient space exists around the sections to enable them to be manoeuvred into
their final location.
2) Sufficient space exists around the unit to enable the filters to be removed and
access can be gained where required. It is recommended that full unit width
access be provided on one side of the unit adjacent to the fan and coil sections.
This is to enable the fans and coils to be removed should ever a fault develop.
3) The unit is installed at a height that allows the installation of the condensate drain
trap.
4) Supports are adequate for the weight of the unit.
5) The plinth, or fixing frame, upon which the unit is to be sited is firm and level. If not
then use packing shims to level the unit when locating.
Assembly

Daikin Applied (UK) Ltd.
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All fixing channels, clamps,hardware, etc., for connecting the sections together are
supplied by Daikin Applied (UK) Ltd. These are boxed separately and are placed inside
the fan section for shipment.
The assembly procedure is as follows:
1) Referring to the General Arrangement (GA) drawing, ensure the sections are in the
correct order of airflow, are correctly orientated and are central to each other.
2) Individual sections are shipped loose for site assembly by others and support legs
(if applicable) are supplied loose for site fitting by others.
3) Ensure that the sections are aligned and levelled to the tolerances as shown on
the Section to Section Assembly drawing A4-920058.
On some larger units, to aid stability during lifting and shipping, temporary
corner bracing is fitted to the open ends of a section as shown on drawing A4-
500646. The bracing must be removed prior to bringing together the joint faces of
adjacent sections. This is to allow the fitting of section to section joining
channels.
4) Ensure that the mating faces of each section are parallel to each other and that
there is contact with each face of the two sections.
5) Use an access door if possible to gain access to the joint for joining the two
sections together. Refer to the Section to Section Fixing Detail drawing A4-STS07
for INT50 unit or A4-STS09 for INT25 unit and the Assembly drawing for site fitting
of section to section joining for installation. If the joint is not accessible via an
access door then remove a side panel adjacent to the joint using a Philips head
screwdriver.
6) Replace all panels upon completion.
7) For weatherproof units see FWR01 for joint sealing, water shed etc.
8) Do not start unit up until at least 24 hours after all sections are assembled together
and the flush internal channels have been fitted inside the unit.
9) If the units are stacked then ensure that the top section is lifted onto the bottom
section in accordance with the previously listed lifting recommendations.
10) Fit the top section to the bottom section through the fixing holes in the top sections
channel base using self tapping screws and large outside diameter washers. If the
unit has a damper, or duct, between the top and bottom sections then refer to
drawing A4–EMP05 for details on the method of sealing and fixing
11) On multi deck units refer to EMP36 for unit fixing and clamping arrangement.

Daikin Applied (UK) Ltd.
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Fan Temporary Restraints
Fans are supplied with a fan discharge flexible connection and anti-vibration mounts
which have been factory installed. To prevent damage to these during transport,
temporary restraints are fitted to the fan base inside all fan sections. For details refer to
drawing A4-417645
These restraints must be removed after installation and before commissioning
and they should be returned to Daikin Applied (UK) Ltd.head office at
Cramlington.