north campus & south study - School of Open Learning

north campus & south study - School of Open Learning
SCHOOL OF OPEN LEARING
(CAMPUS OF OPEN LEARING)
UNIVERSITY OF DELHI
5, CAVALRY LANE
DELHI – 110007
OPEN TENDER FOR AIR CONDITIONING SYSTEM OF SCHOOL OF OPEN LEARNING
(NORTH CAMPUS & SOUTH STUDY CENTRE)
Last date of purchase of tender document … 14-05-2015 upto 16:00 hrs.
Last date of submission of filled up tender … 15-05-2015 upto 15:00 hrs.
Date of opening of tender
SOL - Delhi University
…15-05-2015
at 16:00 hrs.
Page 1
CONTENTS
GENERAL
Section I
Notice Inviting Tender ……………………
3-3
Section II
General Condition of Contract (GCC) …………… 4 – 7
Section III
Special Condition of Contract (Part A) …………
8 – 20
Section IV
Special Condition of Contract (Part B) …………
21 – 31
TECHNICAL
Section I
System Design Data & General Requirement
32 – 38
Section II
A C Equipment
39 – 47
Section III
Piping
48 – 49
Section IV
Ventilation System
50 – 51
Section V
Insulation
52 – 52
Section VI
Electrical Installation
53 – 65
Section VII
Mode of Measurement
66 – 67
Appendix – I
List of Approved makes of Materials
68 – 68
Appendix – II
Technical Data for VRF / VRV System
69 – 72
Appendix – III
Air-cooled Condenser Details
73 – 74
FINANCIAL
Section I
SOL - Delhi University
Schedule of Rates
75 - 84
Page 2
SCHOOL OF OPEN LEARNING, DELHI
SECTION – I
NOTICE INVITING TENDER
Sealed item rate open tender in two bid system (Technical Bid and Financial Bid) are invited
from Original Equipment Manufacturers / Authorized suppliers for supply, installation, testing
and commissioning of Imported Variable modular type air-conditioning system as given in
Appendix I for the works as detailed hereunder:
Brief Description of
Work
Estimated
Cost
Air conditioning system for
school of Open Learning,
University of Delhi
Rs. 4.35
Crore
Earnest
Money
Rs.
Lakh
Time of
Completion
8.70 Four
Months
Tender
cost
Rs.
2000.00
Tender documents can be obtained from Assistant Registrar (General), Room No. 206,
School of Open Learning, 5 Cavalry Lane, Delhi – 110007 on or before 14-05-2015 upto
16:00 hrs. on payment of Rs. 2000/- (Rupees Two Thousand Only) (non-refundable) towards
cost of tender document. Tender documents can also be down loaded from our website
http://sol.ac.in or http://du.ac.in. In case tenderer submits down loaded document, then they
are required to submit DD amounting to Rs. 2000/- (equivalent to cost of tender) favouring
Executive Director, SOL payable at Delhi, failing which their tender shall be summarily
rejected.
The tender document comprising of two parts (technical and financial bid) shall be submitted
in separate envelopes duly sealed, upto 15:00 hrs on or before 15-05-2015. The bids should
be submitted strictly as per instructions contained in the tender documents. The technical bids
shall be opened on the same day at 16:00 hrs in the presence of representative of those firms
who wish to be present. Price bids of only those firms whose technical bid is found suitable
shall be opened later.
The Executive Director, SOL reserves the right to reject any or all of the tenders without
assigning any reason whatsoever.
Assistant Registrar (General)
SOL - Delhi University
Page 3
SECTION – II
General Conditions of the Contract
1.
The tenders are to be submitted in two separate envelopes each sealed and clearly
identified as to envelop number and contents as indicated below. Both the envelops
shall be contained in a large envelope super scribed ‘Tenders for Air Conditioning
System for School of Open Learning’.
2.
The tenderer will be issued one set of tender documents comprising of ‘Technical Bid
and Financial Bid for preparation of their tender.
3.
Tenderers have to return all the documents issued to them while submitting their
tender, duly stamped and signed as per instructions.
4.
Envelope No. 1
4.1
Envelop no. 1 shall contain TECHNICAL BID of tender documents each page duly
signed by tenderers as a token of their acceptance of the technical and contractual
details including tender form duly filled in, complete details and description, including
all data to be supplied by tenderer as specified in the information and instructions to
tenderers. The envelope No. 1 shall also contain Earnest Money Deposit in the form of
Crossed demand draft of Rs. 8,70,000.00 (Rupees Eight Lakh Seventy Thousand
Only) in favour of Executive Director, SOL payable at Delhi and forwarding letter of
Contractor. The forwarding letter of the contractor should contain the following
documents in support of their eligibility:
i.
Documents indicating the setup of organization,
Partnership, proprietorship, Pvt Ltd, Public Ltd. etc.
ii.
Details of works of similar nature carried out in Central or State Government bodies
/ departments, Public Sector Undertakings, MES, Railways in the last 5 years, each
of minimum value as detailed below:
(a) Three similar completed works costing not less than the amount equal to 40% of
the estimated cost. (40% of 4,35,00,000/- = 1,74,00,000/-)
or
(b) Two similar completed works costing not less than the amount equal to 50% of
the estimated cost. (50% of 4,35,00,000/- = 2,17,50,000/-)
or
(c) One similar completed works costing not less than the amount equal to 80% of
the estimated cost. (80% of 4,35,00,000/- = 3,48,00,000/-)
Similar works means works related to Air conditioning work.
Completion certificates for the above should clearly indicate the scope and nature
of work carried out and the value of various components of work as executed, in
order to confirm conformity to defined similar works. The completion certificate
SOL - Delhi University
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should be signed by the issuing authority with stamp without which the works will
not be considered.
iii.
Details of tools, tackles, plant, machinery and technical personnel available with the
organization.
iv.
Copy of valid TIN number
v.
Copy of registration with Works Contract Cell of Sales Tax Department, NCT of
Delhi
vi.
Proof of having achieved average annual financial turnover or Rs. One Crore in the
previous 3 financial years ending 31 March 2014.
vii.
List of ongoing works with their financial value.
viii.
List of arbitration/court cases (if any)
This envelope shall be super scribed ‘ENVELOP No. 1 – TECHNICAL BID for Air
conditioning system for School of Open Learning.
Financial bids of Tenderers who do not fulfill the above requirement shall not be
opened. The required documents should be submitted strictly as prescribed. Original
documents may be required for verification of the above claims at the time of opening
the technical bids.
5.
Envelope No. 2
Envelope no. 2 shall contain only ‘FINANCIAL BID’ of tender documents i.e. the copy
of schedule of work and prices duly filled in (Financial, Section –I) and signed by the
tenderer along with the prescribed letter. No. commercial or technical condition or
qualification of any sort shall be indicated by the tenderer in this Envelope, otherwise
the tender shall be summarily rejected. This envelope shall be super scribed
‘ENVELOPE No.2 – FINANCIAL BID for Air conditioning system for School of Open
Learning.
6.
Sealed tenders addressed to the Assistant Registrar (General), Room No. 206, School
of Open Learning, 5, Cavalry Lane, Delhi – 110007 will be dropped in the tender box
placed in the room on or before up to 15:00 hrs on 15-05-2015.
7.
Envelope No. 1 will be opened on the closing date in the presence of such tenderers or
their duly authorized representatives as may like to be present at 16:00 hrs at the
address indicated at 6 above.
8.
The date and time of opening of Envelope No. 2 in case of tenderers found eligible
shall be intimated separately.
9.
The Executive Director, SOL reserves the right to accept or reject any or all the tenders
without assigning any reasons.
SOL - Delhi University
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10.
Earnest money deposit of Rs. 8,70,000.00 (Rupees Eight Lakh Seventy Thousand
Only) must accompany the technical bid (Envelop No. 1) through demand draft in
favour of Executive Director, SOL payable at Delhi otherwise the tender shall be
rejected.
11.
The tenders shall remain open for acceptance for a period of 90 days from the date of
opening of the FINANCIAL BID. If any tenderer withdraws his bid before the said
period or makes any modifications in the terms and conditions of the tender or remedy
will be at liberty to forfeit the earnest money deposit. In the case of a successful
bidder, earnest money will be forfeited, if the bidder fails to sign the contract and
furnish performance security. Earnest Money of the unsuccessful bidder/tenderer will
be returned after 30 days of finalization of the contract.
12.
The School of Open Learning reserves the right without assigning any reasons
therefore to:
i.
Accept or reject any or all tenders in whole or in part;
ii.
Increase or decrease the quantities of any item of the work and the successful
tenderers shall perform the same at the rate quoted.
13.
Time of completion of work will be four (4) months from the date of commencement as
per letter of intent.
14.
The successful tenderer shall have to execute an agreement with Executive Director,
SOL on the standard contract agreement form.
15.
The work is to be carried out as per CPWD specifications 1995 (External) and 2013
(internal) and General specifications for Heating, Ventilation and Air Conditioning
(HVAC) Works 2004 amended up to date as per instructions of Engineer in charge /
monitoring committee complying the requirements of Indian Electricity Rules in force
and Technical Specifications attached with the Tender.
16.
Watch and ward of the material at site and HVAC / electric installation shall be the
responsibility of the contractor till full testing of all the fittings are completed and
handed over to SOL in full and nothing extra will be paid on this amount.
17.
The Contractor shall be fully responsible for the safe custody and the proper storage of
the material at site to the satisfaction of the monitoring committee for which nothing
extra will be paid.
18.
The contractor or his authorized representative will have to sign the site order books
and comply with the instructions therein.
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19.
All electrical connections shall have to be done by the contractor and the installation
energized and set in working order before they can be accepted by the monitoring
committee.
20.
Any further clarifications may please be obtained from the undersigned. Intending
tenderers are encouraged to visit the site of work and acquaint themselves with the
scope of work.
Assistant Registrar (General)
SOL - Delhi University
Page 7
SECTION – III
SPECIAL CONDITIONS OF CONTRACT (Part A)
1.
DEFINITIONS :
In construing this contract as defined in 1(e) below the following words shall have the
meaning herein assigned to them except where the subject or contract otherwise
requires:
a) Employer
:
Shall mean School of Open Learning, University of
Delhi and their representative/s, assignee/s,
successor/s.
b) Contractor
:
Shall mean and include his/their representative/s,
assignee/s, successor/s.
c) Consultants
:
d) Site
:
Shall mean M/s V.S. Kukreja & Associates Pvt. Ltd.,
having their office at 165-A, Gautam Nagar, New
Delhi 110049
Shall mean the site of the contract works.
e) This Contract
:
Shall mean invitation to tenders and general
instructions to the contractors, letter of acceptance of
tender. Articles of agreement and conditions of
contract, the appendix, plant specifications and
schedule of quantities attached hereto and duly
signed.
f) Notice in writing
:
g) Engineer in charge
:
Shall mean a notice in writing, typed or printed or
written notice characters sent (unless delivered
personally otherwise proved to have been received)
by registered post to the last known private or
business address or registered office of addressee
and shall be deemed to have been received when in
the ordinary course of post it would have been
delivered.
Shall mean the Engineer officer who shall supervise
the work with Monitoring Committee and be in-charge
of work.
Words importing persons include firm and corporations. Works importing the singular
only also includes the plural and vice versa where the contract requires.
2.
SCOPE OF CONTRACT :
The contractor shall carry out and complete the said work in every respect in
accordance with this contract and under the direction of and to the satisfaction of the
SOL - Delhi University
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engineer in charge. The engineer in charge may in his discretion and from time to time
issue further drawings and or written instructions, details, directions and explanations
which are hereunder collectively referred to as “Engineers In-charge” in regard to :a) The variation or modification to the design, quality or quantity of work or omission or
substitution of any work.
b) Any discrepancy in the drawing or between the schedule of quantities and/or Drawing
and/or specifications.
c) The removal and re-execution of any works executed by the contractor.
d) The dismissal from the works of any person thereupon.
e) The amending and making good of any defects under clause 21. The contractor shall
forthwith comply with and duly execute any work in Engineer In-charge's instructions
provided always that verbal instructions, directions and explanations given to the
contractor or involving a variation to be confirmed in writing by the contractor within 14
days. And if not dissented from it in writing within a further 7 days by the Engineer
Incharge, such shall deemed to be engineer In-charge's instructions within the scope of
the contract.
3.
CONTRACT TO PROVIDE EVERYTHING NECESSARY:
a) The contractor shall provide everything necessary for the proper execution of the
works according to the intent and meaning of the drawings, schedule of quantities and
specifications taken to gather whether the same or may not be particularly shown or
described therein provided that the same can be reasonably inferred there from and in
case of any discrepancy in the drawing or between the drawings, schedule of
quantities and specifications, the more stringent shall be followed.
b) The contractor shall supply, fix and maintain at his own cost during the execution of
any works, all necessary centering, scaffolding, staging, planking, timbering, strutting,
shoring etc, as occasion shall require or when ordered to do so and shall fully reinstate
and make good all matters and things disturbed during the execution of the works to
the satisfaction of the consultant/engineer in-charge.
4.
PERFORMANCE SECURITY
The contractor shall furnish performance security to the employer for an amount equal
to 5% of the tendered value within 15 days of issue of letter of intent in the form of
bank guarantee from any scheduled bank in the prescribed format. The proceeds of
performance security shall be payable to the employer as compensation for any loss
resulting from the contractor’s failure to complete his obligations under the contract.
The performance Security shall remain valid for a period of 60 days beyond the date of
time of completion of work. In case of grant of extension of time, the Performance
Security shall have to be extended accordingly.
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5.
SECURITY DEPOSIT
The Earnest Money will form the part of the security deposit. The Security Deposit @
5% of the contract value shall be deducted from the running bills of the contractor. The
Security Deposit will be refunded after expiry of twelve months after issue of the final
certificate or otherwise of completion of work, or till the final bill has been prepared and
passed whichever is later.
6.
AUTHORITIES NOTICES AND PATENTS:
The contractor shall conform to the provisions of any act of legislature to the works,
and to the regulations and bye laws of any authority and of any water, lighting and
other companies and/or authorized with whose system the plant is proposed to be
connected and shall before making any variations from the drawings or
specifications that may be necessitated by so conforming, give to the engineers Incharge written notice specifying the variation proposed to be made and the reasons
for making it and apply for instructions thereon. In case the contractor shall not within
ten days receive such bye laws in question, the contractor shall indemnify the employer
against all claims in respect of patent rights and shall defend all acts once arising out
from such claims, and shall himself pay all royalties license fees, damage, cost of all
and every sort that may be legally incurred in respect thereof.
7.
CONTRACTOR'S SUPERVISION OF THE WORKS:
The contractor shall give all necessary personal superintendence during the execution
of the works, and as long thereafter as the engineers incharge may consider necessary
until expiration of the “Guarantee Period” stated in appendix hereto. The contractor
shall also during whole time the works are in progress, appoint a competent
representative who shall constantly supervise works at site.
8.
ACCESS TO ENGINEER IN-CHARGE TO WORK:
The Engineers in-charge/employer and their representative shall at all reasonable time
have free access to works. The contractor shall give every facility to the Engineers incharge/employer and their representative, necessary help for instructions and
examinations and test of the materials and workmanship.
9.
MEASUREMENT OF WORK:
The engineers in-charge may from time to time intimate to the contractor that he
requires the works to be measured and the contractor shall forthwith attend or send a
qualified agent / engineer to assist the Engineers In-charge or their representative in
taking such measurement and calculations and to furnish all particulars or give all
assistance required by either of them. Should the contractor not attend or neglect or
omit to send such agent/ engineer then the measurement taken by the engineer incharge or approved by him shall be taken to be correct measurement of the works in
SOL - Delhi University
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accordance with the standard method of measurement of the works, in accordance
with the standard method of measurements as in prevalent use for the air-conditioning
and ventilation works.
The contractor or his agent/ engineer may at the time of measurement take such notes
and measurements as he may require. The contractor shall submit running bills
supported by detailed measurement sheets as and when necessary preferably once a
month for all the works executed by him upto date. After the virtual completion of the
works to the satisfaction of the Engineer In-charge the contractor shall forward the final
bill in the same manner as explained above, no claims shall be entertained in respect
of work after submission of the final bill by the contractor.
10.
CERTIFICATE OF VIRTUAL COMPLETION :
The works shall not be considered as completed until the Engineers In-charge has
certified in writing that the works have been virtually completed and the guarantee
period shall commence from the date of such certificate. Such certificates shall not be
issued until all tests as given in clause 19 is carried out to the entire satisfaction of the
Engineers In-charge or his representatives.
11.
INSURANCE IN RESPECT TO DAMAGE TO PERSONS AND PROPERTIES :
The contractor shall be responsible until the virtual completion of all works for all injury
to persons, animals or things and for all structural and decorative damage to property,
plant and machinery which may arise from the operation and neglect of himself or of
sub-contractor or any of his sub-contractors employees whether injury or damage arise
from carelessness, accidents or any other cause whatever in any way connected with
carrying out of this contract. The contractor shall indemnify the Employer and hold him
harmless in respect of all and any expenses arising from any such injury or damage
under any act of government or otherwise and also in respect of any award of
compensation and damage upon such claim.
The contractor shall indemnify the employer with the policy of insurance in the joint
names of the employer and the contractor against such risks and deposit such policies
or policy with the Engineers In-charge from time to time during the currency of this
contract.
The contractor shall be responsible for anything which may be executed from the
insurance policies above referred and also for all other damages to any property
arising out of and incidental to the negligent and defective carrying out of this contract.
12.
GENERAL INSURANCE :
The contractor shall at time of signing the contract insure the works, plants and
machinery and keep then insured until the virtual completion of the contract against
loss or damage by fire, theft or loss in transit, in an office to be approved by Engineers
In-charge, in the joint name of the employer and the contractor (the name of the former
being placed first in the policy) for the full amount of the contract.
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13.
DATE OF COMMENCEMENT AND COMPLETION :
The contract shall be allowed admittance to the site on the date of commencement as
stated in the GCC/appendix and shall thereupon and forthwith begin the works and
shall regularly proceed with and complete the same on or before the date of
completion stated in appendix subject nevertheless to the provisions for extension of
time hereinafter contained.
14.
CLEARANCE OF SITE:
The contractor shall have to remove all debris and other unwanted material from the
site of work, before handling over the entire system/installations to the employer. The
shall not be treated as complete in all respects unless these requirements are fulfilled
by him. In the event of the contractor failing to do so, the architects and the employer
shall have the right to get the site cleared.
15.
FOREIGN EXCHANGE
The contractor shall make his own arrangements to procure the imported
items/equipments as required for the project for which no foreign exchange shall be
made available by SOL.
16.
PRICES:
The prices to be quoted by the intending tenderer shall include supply and installation
at the site of all equipment, ancillary materials and other items whatsoever required for
carrying out the job to fulfill the intent and purpose as laid down in the specifications
and/or drawings. The tenderer's price shall deemed to have included all nuts, bolt,
shims, clamps, supports etc. as for proper fixing and or grouting the equipment,
ancillary items etc., whether specifically mentioned or not. The contractor shall also
include, in his price, all taxes, duties, freights and other levies (viz. Excise duty,
customs duty, sales tax, octroi, works contract taxes etc.) which are legally liable on
air-conditioning and ventilation plants and installations. Failure to include all leviable
taxes, duties and freights will not entitle the contractor to any extra claims from the
employer. The contractor’s rates shall remain firm and fixed during currency of the
contract.
The rates quoted should be both in words and figure. In case of difference in rates in
words and figure, the rates in words will override the rate in figure.
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17.
TERMS OF PAYMENT
i)
18.
The Authority shall pay to the contractor in the following manner the contract price
unless agreed upon otherwise between the contractor and the Authority:
a)
80% of the value of goods/equipments delivered/work done at site after
checking the same and evaluation by the Engineer in Charge. The decision
of the Engineer in Charge as to the value of the goods/equipment/work done
at site will be final.
b)
95% of the contract value on completion of various items as per the quoted
rates less payment already made.
c)
100% of the value of the contract less the amount paid already against the
goods/equipments delivered at site as above on completion of erection,
testing, commissioning of plant and handing over and completion of major
seasonal test during summer and monsoon.
d)
TDS, WCT, Labour Cess etc will be deducted from each payment as per
rules.
e)
The security deposit will be released only after the successful completion of
the guarantee and defects liability period.
ii)
The contractor shall not be entitled for any extra payment whatsoever on account
of above special condition of contract.
iii)
Any tenderer who wishes to withdraw after the opening of the tender within the
validity period of the tender will be dealt with as provided in GCC.
iv)
Any firm indulging in the post tender reduction, voluntary reduction or any type of
reduction before negotiation will be debarred from the tendering in School of
Open Learning, 5, Cavalry Marg, University of Delhi, Delhi
VARIATION IN QUANTITIES :
The quantities for the ancillary work given in the drawings and/or specifications are for
the guidance of the tenderer. The contractor shall, however, be paid on the basis of the
actual quantities of works carried out.
19.
WORKING DRAWINGS, MAINTENANCE MANUALS ETC. :
On the award of the work the contractor shall immediately proceed with the preparation
of detailed working/shop drawings, detailing the equipment that are to be installed and
the ancillary work that are to carried out. Three set of all such working drawings shall
be submitted to the Engineers In-charge for his approval to ensure that the works will
be carried out in accordance with the specifications and the drawings including such
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changes as may have been mutually agreed. All the drawings shall be received by the
engineer In-charge for his approval within one week of the award of the contract. The
approval of the drawing by the Engineers In-charge shall in no way relieve the
contractor from his obligation to provide a complete and satisfactory plant and
installation as per intent and purpose as laid down in the specifications, any
commissions and/or errors shall be made good or rectified whether or not the drawings
are approved.
Prior to the completion of the work the contractor shall furnish to the employer 4 sets
of a comprehensive manual describing all components with a list of spare parts and
setting forth in details the instructions for the operation and the maintenance of the
plant. The contractor shall also fix in the plant room, neatly typed and framed
instructions and details, for the starting and running of the plant.
Any special tools required for the operation and the maintenance of the plant shall be
supplied free with the plant.
20.
TESTING :
The total system shall be tested for performance during summer and monsoon. All
other types of routine and type testes shall be carried out at the works of the contractor
or the manufacturer of the components, the Engineer In-charge shall be free to witness
any or all test if he so desires. On the completion of the installations the contractor
shall arrange to carry our various initial, tests as detailed below in the presence of and
to the complete satisfaction of the Engineers In-charge or his representative. Any
defects and shortcomings found during the test shall be speedily rectified and made
good by the contractor at his own expenses. The initial test shall include but not be
limited to the followings :
a) To test and check the proper functioning of switch gears safety and other controls to
ensure their proper functioning.
b) To check, adjust and balance the Refrigerant's flow in the various circuits.
c) To check and adjust the air flow in grilles and diffusers.
d) To check the systems against leaks in copper piping and GI drain piping.
e) On the satisfactory completion of all initial tests the plant shall be considered
virtually complete for the purpose of taking over by the employer.
f) To check the alignment of motor, v-belt adjustments, control setting and all such
other tests which are essential for smooth functioning of the plant.
g) In addition to the initial test the contractor shall also give one continuous running
test of the plant of 8 hrs. duration for three days. The running test will be conducted
after the completion of the initial test for summer as well as monsoon.
h) The contractor shall provide necessary tools, instruments, gauges, flow meter,
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anemometer, etc., as may be required for conducting various tests.
He shall also provide necessary lubricants etc. and required personnel for the test
however water and power for the tests shall be provided by the employer.
21.
POWER FOR INSTALLATION :
The employer shall provide power at one point in the building for proper
execution of the works. The contractor shall install his own distribution network
at his own expenses.
22.
REJECTION OF DEFECTIVE PLANT :
a) If any portion of the plant, equipment or components are found to be defective or
not fulfilling the intent or the meaning of the specifications, the same shall be
replaced to the entire satisfaction of the Engineer In-charge.
b) In case the contractor fails to remove the defects within a period considered
reasonably by the Engineers In-charge the employer reserves the right to take
necessary remedial action through other agencies and all expenses thus
incurred would be recovered from the contractor.
c) The employer reserves the right to operate all the equipment and complete
system, whether or not the plant is taken over after the initial tests and
commissioning.
Any defects found during the initial and running tests shall be removed at
suitable time as decided upon by the Engineers In-charge.
23.
MAINTENANCE OF THE PLANT :
a) The contractor shall arrange to provide, at no cost all necessary personnel and
material and consumables like gas etc. etc. to carry out all routine and special
maintenance of the plant as required, regularly for a period of 12 (twelve)
months from the date of the final taking over the plant/project.
b) The contractor shall also train the employers personnel, to operate the plant and
carry out routine checks, during the period of installation and testing. If found
necessary, the contractor shall train such personnel at his work at no extra cost
to the employer.
24.
COMPLETENESS OF THE PLANT :
The contractor shall provide all required materials, equipment, ancillary items
etc. to install a complete and satisfactory plant capable of fulfilling the intent and
purpose of the contract, whether or not each and every item is mentioned in
the specifications and or drawings. Any shortcoming notices at any stage shall
be made good at no extra cost.
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25.
GUARANTEE:
a) The contractor shall guarantee that all the materials, machinery and components
supplied, fabricated, designed and installed by him shall be free from defects
due to faculty design, material and/or workmanship & that the plant shall run
satisfactorily and efficiency of the system and all the components shall not be
less than the values laid down in the specifications and the capacities shall be
at least equal to those specified.
b) The Period of guarantee shall be 12 (twelve) months from the date of
commissioning and handing over of complete system during which period any or
all components found to be defective shall be replaced or repaired free of cost
and any shortcoming found in the system as specified shall be removed at no
extra cost. The contractor shall provide all necessary personnel and tools for
fulfilling the above guarantee.
c) If for any reason, the first running test can't be carried out, then the plant shall
carry a guarantee for 15 (fifteen) months from the date of virtual completion or
18 (eighteen) months from the date of supply whichever is earlier.
d) If the defects are not removed within a reasonable time, the employer may
arrange to do so at the contractors risk ad cost, without prejudice to any other
right.
26.
DAMAGE FOR NON-COMPLETION :
Should the work be not completed to the satisfaction of the Employer within he
stipulated period, the Contractor shall be bound to pay to the employer, a sum
calculated at the rate of 0.5% of the Contract value for per week of delay subject
to a maximum of 10% of the contract value by way of liquidated damages during
which time the work remains uncommenced or unfinished after expiry of
completion date.
27.
FORCE MAJEURE :
The right of the contractor to proceed with the work shall not be terminated
because of any delay in the completion of the works due to unforeseen causes
beyond the control and without the fault and negligence of the contractor
including but not limited to the acts of God or of civil enemy, restraints of a
sovereign state, floods, unusually severe weather conditions.
28.
ARBITRATION
All disputes, differences and questions arising out of or in any way touching or
concerning this agreement or subject matter thereof or the representative rights,
duties or liability of the parties shall be referred to the sole arbitration of the
Executive Director, School of Open Learning or any person nominated by him.
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The arbitration shall be in accordance with the Arbitration and Conciliation Act,
1996. The arbitrator shall be entitled to extend the time or arbitration
proceedings with consent of the parties. No part of the agreement shall be
suspended on the ground of pending arbitration proceedings. The award of the
Arbitrator shall be final and binding on both the parties. The venue of the
arbitration proceedings shall be the office of the School of Open Learning, Delhi
or such other places as the arbitrator may decide.
29.
COURT JURISDICTION
It is also condition of this contract that the court which has territorial jurisdiction
over Delhi shall have the absolute jurisdiction for adjudicating any difference or
disputes arising out of this contract to the exclusion of all other courts.
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INFORMATIONS ABOUT TENDERERS
(To be submitted in duplicate)
A.
In case of Individual:
1.
2.
3.
4.
5.
6.
7.
8.
Name of Business
Name of Owner
Whether his business is registered
Date of commencement of business
Whether he pays income tax over Rs. 10,000 per year
Bank Reference
PAN, sales Tax and registration numbers
Telephone, fax and mobile number
B.
In case of Partnership
1.
2.
3.
4.
5.
6.
Name of firm and partners
Reference of the partnership registration
Date of establishment of the firm
The names of partners of firm paying income tax over Rs. 10,000 per year with PAN.
Bank Reference
Telephone, fax and mobile numbers
C.
In case of Limited Liability Company or Company Limited by Guarantee
1.
2.
3.
4.
5.
Amount of paid up capital
Names of Directors
Date of Registration of company
Copies of the balance sheets of the company of the last two years
Telephone, fax and mobile numbers
(Signature of the Tenderer)
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Details of Similar Works Done During Past Five Years :
Full postal Description Value of Completion Date of
Actual
Year of
Reason
address of
of work
contract
time as
Commenc Completion Completion for time
client &
stated in
ement
on time
Over Run,
name of
Tender
(months)
if Any
officer In(Months)
Charge
1
2
3
4
5
6
7
8
(Signature of the Tenderer)
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Current Commitment of the Tenderer :
(Strictly as per the Performa given below. This shall be submitted in quintuplicate)
Full postal Description Value of Completion
Date of
Actual
Year of
Reason
of work
contract
time as
Commence Completion Completion for time
address of
client &
stated in
-ment
on time Over Run,
name of
Tender
(months)
if Any
officer In(Months)
Charge
1
2
3
4
5
6
7
8
(Signature of the Tenderer)
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SECTION – IV
SPECIAL CONDITIONS OF CONTRACT (Part B)
1.
GENERAL :
These are special conditions to the contract and intended for the same.
2.
SCOPE OF WORKS :
The general character and the scope of work to be carried out under this contract is
illustrated in drawings, specifications and the schedule of the quantities. The contractor
shall carry out and complete the said work under this contract in every respect in
conformity with the contract documents and with the direction of and to the satisfaction
of the owner's site representative. The contractor shall furnish all labor, materials and
equipment as listed under the schedule of quantities and specified otherwise,
transportation and incidentals necessary for supply, installation, testing and
commissioning of the complete air conditioning system as described in the
specifications and as shown on the drawings. This also includes any material,
equipment, appliances and incidental work not specifically mentioned herein or noted
on the drawings/documents as being furnished or installed. But which are necessary
and customary to be performed under this contract. The central air conditioning and
ventilation system shall comprise of the following :
a)
Supply and installation of the VRV System including the following
b)
Indoor Ducted Fan Coil Units/ high wall units.
c)
Outdoor VRV condensing Units.
d)
Refrigerant piping including insulation and the all accessories
e)
Exhaust fans for mechanical ventilation
f)
Supply & Return air registers and diffusers.
g)
Vibration isolation for HVAC equipments.
h)
Automatic Controls and instruments.
i)
Wiring and earthing for various refrigeration, air-conditioning and mechanical
ventilation equipment control wiring and interlocking
j)
Cutting holes, chases and the likes through all types of nonstructural walls and
finishing all type of wall crossings, including sealing, framework, fire proofing,
providing sleeves, cover plates, making good structure and finishing to an
approved standard.
k)
Balancing, testing and commissioning of the entire HVAC and mechanical
ventilation installations.
l)
Test report, list of recommended spares, as installed drawings, operation and
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maintenance manuals for the entire HVAC installations.
m)
3.
Training of owner's staff.
ASSOCIATED CIVIL WORKS :
Following civil works associated with HVAC installations shall be included in the scope
of the contract. These shall be executed by contractor or his competent agencies under
direct supervision of the air-conditioning contractor.
a)
PCC foundation for outdoor condensing units with angle iron framework at the
edges to protect these from damage.
b)
Supply and fixing of GI/wooden frames for fixing the grilles in masonry walls.
c)
Supply and fixing of GSS frames for mounting of grilles/diffusers in false ceiling/
boxing if applicable.
4.
ASSOCIATED SERVICES WORKS:
a) Three phase 415V, 50vHz Power supply shall be terminated in the main electrical
panel to be provided by the HVAC contractor in each building, further distribution to
the outdoor units shall be within the scope of work of the HVAC contractor also all
drain pipes shall be provided for connecting the condensate drain traps.
5.
PROJECT EXECUTION AND MANAGEMENT :
The contractor shall ensure that senior planning and execution personnel from his
organization are assigned exclusively for this project. They shall have minimum 10
years’ experience in this type of installations.
For quality control & monitoring of workmanship, contractor shall assign at least one
full time engineer who would be exclusively responsible for ensuring strict quality
control, adherence to the specifications and ensuring top class workmanship for the
air-conditioning installation.
The contractor shall arrange to have mechanized and modern facilities for
transportation of materials to the place of installation for speedy execution of work.
6.
PERFORMANCE GUARANTEE :
The Contractor shall carry out the works in accordance with the drawings,
specifications, schedule of the quantities and other documents forming part of the
contract. The contractor shall be fully responsible for the performance of selected
equipment (installed by him) at the specified parameters and for the efficiency of the
installations to deliver the required end results. The contractor shall guarantee that the
HVAC system as installed shall maintain the inside conditions in the air-conditioning
spaces as described under Basis of Design in the specifications. The guarantee shall
SOL - Delhi University
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be submitted in the Performa sheet. Complete set of architectural drawings are
available in the architect/Consultants office and reference may be made to same for
any detail or information. The contractor shall also guarantee that the performance of
various equipment individually, shall not be less than the quoted capacity, actual power
consumption shall not exceed the quoted rating, during testing and commissioning,
handing over and guarantee period.
7.
BYE LAWS AND REGULATIONS :
The installations shall be conformity with the by-laws and regulations and standards of
the local authorities concerned, in so far as these become applicable to the
installations. But if these specifications and drawings call for a higher standard of
material and / or workmanship than those required by any of the above regulations and
standards then these drawings and specifications shall take precedence over the said
regulations and standards. However, if the drawings and specification require
something which violates the bye-laws and regulations, then the bye-laws and
regulations shall govern the requirement of the installations.
8.
FEES AND PERMITS :
The contractor shall obtain all permits/license and pay for any or all fees required for
inspection, approvals and commissioning of their installations.
9.
DRAWINGS :
The HVAC drawings listed herewith, which may be issued with tenders are
diagrammatic only and indicate arrangement of various systems and the extent of
works covered in the contract. These drawings indicate the points of supply and
termination of services and broadly follow the routed to be followed. Under no
circumstance shall dimension be scaled from the drawings. The architectural/ interior
drawings and details shall be examined for exact location of the equipment, controls,
grilles and diffusers.
The contractor shall follow the tender drawings in preparation of his shop drawings and
for subsequent installation work. He shall check the drawings of other trades/ services
to verify spaces in which his works shall be installed.
Maximum headroom and space conditions shall be maintained at all points. Where
head room appears inadequate the contractor shall notify architect/ consultant/ owner's
site representative before proceeding with the installations. In case installation is
carried out without notifying the works shall be rejected and the contractor shall rectify
the same at his own cost. The contractor shall examine all the architectural, structural,
plumbing, electrical and other services drawings and check the as built works before
starting the work, report to the owners site representative of any discrepancies and
obtain clarification. Any changes found essential to coordinate his work with other
services and trades, shall be made with prior approval of architect/contractor/owner's
site representative without additional cost to the owner. The data given in the drawings
and specifications as exact as could be procured, but its accuracy is not guarantee.
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10.
TECHNICAL DATAS :
Each tenderer shall submit along with his tender, the technical data for all items listed
in the indicated format. Failure to submit complete data with the tenders may result in
summary rejection of the tender.
11.
SHOP DRAWINGS :
11.1
All shop drawings shall be prepared on computer through AutoCAD system based on
the architectural drawings, site measurements and interior designers drawings. All heat
load calculation shall be done using the latest version of HAP/Trace 600only within two
weeks of the award of the contract, contractor shall furnish for the approval
of
the
architect / consultant two set of detailed shop drawing of all equipment and material
including the layouts of the plant rooms, AHU rooms, Fan rooms, Cooling
Towers, fan coil units, ventilation fans. Detailed ducting drawing showing exact location
of supports, flanges, bends, tee connections, reducers, guide vanes, silencers
distribution grids, Volume control dampers, collars, grilles, diffusers, detailed piping
drawing showing exact location and type of supports, valves, fitting etc. acoustic lining
and external insulation details for ducts, pipe insulation etc. Electrical panels
inside/outside views, power and control wiring schematics, cable trays, supports and
terminations. These shop drawings shall contain all information required to complete
the project as per specifications and as required by the Architect/Consultant/Owners
site representative. These drawings shall contain details of constructions, size
arrangement, operating clearances, performance characteristics and capacity of all
items of equipment, also the details of all related items of work by other contractors.
Each shop drawing shall contain tabulation of all measurable items of
equipment/material/works and progressive cumulative totals from other related
drawings to arrive at a variation in quantity statement at the completion of all shop
drawings. Minimum 7 sets of drawings shall be submitted after final approval along with
their floppies.
Each item of equipment/material proposed shall be standard catalogue product of an
established manufacturer strictly from the manufacturers listed in Appendix and quoted
by tenderer in technical data part of Appendix.
When the Architect/Consultant makes any amendment in the above drawings, the
contractor shall supply two fresh sets of drawings with amendments duly incorporated
along with check prints for approval. The contractor shall submit further 7 sets of the
shop drawings.
When the Architect/Consultant makes any amendment in the above drawings, the
contractor shall supply two fresh sets of drawings with amendments duly incorporated
along with check prints for approval. The contractor shall submit further seven copies
of the shop drawings to the owners site representative for the exclusive use of the
owner's site representative and all other agencies. No material or equipment may be
delivered or installed at the job site until the contractor has in his possession the
approved shop drawing for the particular material/equipment/installations.
11.2
Shop drawings shall be submitted for approval four weeks in advance of planned
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delivery and installation of any material to allow Consultant ample time for
scrutiny. No claims for extension of time shall be entertained because of any delay in
works due to his failure to produce shop drawings at the right time in accordance with
the approved programme.
11.3
Manufacturers drawings, catalogues, pamphlets and other documents submitted
for approval shall be in four sets. Each item in each set shall be properly labelled
indicating the specific services for which the material / equipment is to be used, giving
reference to the governing section and clause number and clearly identifying in ink the
items and the operating characteristics. Data for general nature shall not be accepted.
11.4
Samples of all materials like grilles, diffusers, controls, insulation, pre-molded pipe
section, control wires etc. shall be submitted to the owners site representative prior to
procurement. These will be submitted in 2 sets of approval and retention by owners
site representative and shall be kept in their site office for reference and verification till
the completion of the project. Wherever directed a mockup or sample installation shall
be carried out for approval before proceeding for further installations.
11.5
Approval of shop drawings shall not be considered as a guarantee of measurement or
that of a building dimension. Where drawings are approved said approval doesn't mean
that the drawings supersede the contract requirements, nor does it in any way relieve
the contractor of the responsibility or requirements to furnish material and perform as
required by the contract.
11.6
Where contractor propose to use an item or equipment other than that specified or
detailed on the drawing which required any redesign of the structure, partitions,
foundations, piping, wiring or any other apart of the mechanical, electrical and
architectural layouts, all such redesign and all new drawings and detailing required
therefore shall be prepared by the contractor at his own expenses and gotten approved
by the architect/consultant/owners site representative. Any delay on such account shall
be at the cost and consequences to the contractor.
11.7
HVAC contractor shall prepare coordinated service shop drawings based on the
drawings prepared by electrical, plumbing & low voltage contractors to ensure
adequate clearances are available for installation of service for each trade.
Where the work of the contractor has to be installed in close proximity to or will
interfere with the work of other trade he shall assist in working out space conditions to
make a satisfactory adjustment. If so directed by the owner's site representative, the
contractor shall prepare composite working drawings and sections at a suitable scale,
not less than 1:50, clearly showing how his work is to be installed in relation to work of
the other trades. If the contractor installs his works before coordinating with other
trades or so to cause any interference with work of other trades he shall make all
necessary changes without extra cost to the owner.
11.8
Within four weeks of the approval of the relevant shop drawings the contractor shall
submit four copies of a comprehensive variation in quantity statement and
itemized price list of recommended (by manufacturer) imported and local spare parts
and tools covering all the materials/equipment in the contractor. The project manager
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shall make recommendation to owner for acceptance of anticipated variation in
contract amounts and also advise Owner to initiate action for procurement of spare
parts and tools at the completion of project.
12.
QUITE OPERATION AND VIBRATION ISOLATION :
All equipment shall operate under all conditions of load without any sound and vibration
which is objectionable in the opinion of the owner's site representative. In case of
rotating machinery sound or vibration noticeable inside its own room shall be
considered objectionable. Such condition shall be corrected by the contractor at his
own expenses. The contractor shall guarantee that the equipment installed shall
maintain the specified NC levels.
13.
ACCESSIBILITY :
The contractor shall verify the sufficiency of the size of the shaft openings, clearances
in cavity and suspended ceiling for proper installation of his ducting and piping. His
failure to communicate insufficiency of the same. The contractor shall locate all
equipment which must be serviced, operated or maintained in fully accessible
positions. The exact location and size of all access panels required for each concealed
damper, valves or other devices requiring attendance shall be finalized and
communicated in sufficient time to be provided in the normal course of work, failing this
the contractor shall make all necessary changes and repairs at his own expenses.
Access panel shall be standardized for each piece of equipment/device/accessory and
shall be clearly nomenclatured/marked.
14.
MATERIALS AND EQUIPMENT :
All materials and equipment shall conform to the relevant Indian standards and shall be
of the approved make and design. Makes shall be strictly in conformity with the list of
approved manufactures as per Appendix III.
15.
MANUFACTURES INSTRUCTIONS :
Where manufacturer has furnished specific instructions relating to the
material/equipment used in this project, covering points specially not mentioned in
these documents, such instructions shall be followed in all cases.
16.
ELECTRICAL INSTALLATIONS :
The electrical work related to air-conditioning services, shall be carried out in fill
knowledge of and with complete coordination of contractor. The electrical installation
shall be in total conformity with the control wiring drawings prepared by the contractor
and approved by the architect/consultant. All air-conditioning equipments shall be
connected and tested in the presence of an authorized representative of the contractor.
The air-conditioning system shall be commissioned only after the contractor has
certified in wiring that the electrical installation work for air-conditioning services has
been thoroughly checked, tested and found to be totally satisfactory and in full
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conformity with the contract drawings, specifications and manufacturers instructions. It
is to be clearly understood that the final responsibility for the sufficiency, adequacy and
conformity to the contract requirements of the electrical installation work for airconditioning services, lies solely with the contractor.
17.
COMPLETION CERTIFICATE :
On completion of the electrical installation for air-conditioning, a certificate shall be
furnished by the contractor, counter signed by the licensed supervisor, under whose
direct supervision the installation was carried out. This certificate shall be in the
prescribed form as required by the local authority.
The contractor shall be responsible for getting the entire electrical installation for airconditioning system duly approved by the local authorities concerned and shall bear
expenses, if any in connection with the same.
18.
BALANCING, TESTING AND COMMISSIONING :
Balancing of all air and water systems and all tests as called for the specifications shall
be carried out by the contractor through a specialist group, in accordance with the
specifications and ASHRAE guidelines and standards. Performance test shall consist
of three days of 10 hrs each operation of each season. Witness testing of major
equipment at factory with two personnel from owners/consultant shall be included.
The results for summer, monsoon and winter air-conditioning in quadruplicate shall be
submitted for scrutiny four copies of the certified manufacturers performance curves for
each piece of equipment, highlighting operational parameters for the project shall be
submitted along with the test certificates. Contractors shall also provide four copies of
record of all safety and automatic control settings for entire installation.
The installation shall be tested again after removal of defects and shall be
commissioned only after approval by the owners site representative. All tests shall be
carried out in presence of the representatives of the architect/consultant and owner's
site representative.
19.
COMPLETION DRAWINGS :
Contractor shall periodically submit completion drawings as and when work in all
respects is completed in a particular area. These drawings shall be submitted in the
form of two sets of floppies/CD's and four portfolios (300 x 450mm) each containing
complete set of drawings on approved scale indicating the work as installed. These
drawings shall clearly indicate complete plant room layouts, location of wiring and
sequencing of automatic controls, locations of all concealed piping, valves, controls,
dampers, wiring and other services. Each portfolio shall also contain consolidated
control diagrams and technical literature on all controls. The contractor shall frame
under glass, in the air-conditioning plant room, one set of these consolidated control
diagrams.
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20.
OPERATING INSTRUCTIONS & MAINTENANCE MANUAL :
Upon completion and commissioning of part HVAC system the contractor shall submit
a draft copy of operating instructions, maintenance schedules and log sheets for all
system and equipment included in this contract. This shall be supplementary to
manufacturers operating and maintenance manual. Upon approval of the draft the
contractor shall submit four complete bound set of typewritten operating instructions
and maintenance manuals. One each for retention by consultant and the clients
representative and two for owners operating personnel. These manuals shall also
include basis of design, detailed technical data for each piece of equipment as
installed, spare parts manual and recommended spares for 3 years period of
maintenance of each equipment.
21.
ON SITE TRAINING :
Upon completion of all works and all tests, the contractor shall furnish necessary
operator's labor and helpers for operating the entire installation for a period not less
than two weeks of ten hours each to enable the owners staff get aquainted with the
operation of the system. During this period the contractor shall train the owners
personnel in the operation, adjustment and maintenance of all equipment installed.
22.
MAINTENANCE DURING DEFECTS LIABILITY PERIOD :
22.1 COMPLAINTS :
The contractor shall receive calls for any or all problems experienced in the operation
of the system under this contract attend to these within four hours of receiving the
complaints and shall take steps to immediately correct any deficiencies that may exist.
22.2 REPAIRS :
All equipment that require repairing shall be immediately serviced and repaired. Since
the period of mechanical maintenance runs for two years concurrently with the defects
liability period, all replacement parts and labor shall be supplied promptly free of
charge to the owner.
23.
UPTIME GUARANTEE :
The contractor shall guarantee for the installed system an uptime of 98%. In case of
shortfall in any month during the defects liability period, the defects liability period gets
extended by a month for every month having shortfall. In case of shortfall beyond the
defects liability period the contract shall get extended by a month for every month
having the shortfall and no reimbursement shall be done for the extended period.
The contractor shall provide log in the form of diskettes and bound printed
comprehensive log book containing tables for daily record of all temperature, pressure,
humidity, power consumption starting and topping times for various equipment, daily
service rendered for the system alarms, maintenance records of unusal observations
etc.
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Contractor shall also submit preventive maintenance schedule.
Each tenderer shall submit along with the tender, a detailed operation assistance
proposal for the owners site representative / consultant's review. This should include
the type of service planned to be offered during the defects liability period and beyond.
The operation assistance proposal shall give the details of the proposed monthly
reports to the management.
The tenderer shall include a list of such project where such operation assistance
has been provided.
24.
OPERATION AND MAINTENANCE
Contractor will be required to carry out the operation and maintenance of complete
HVAC installation, including associated Electrical Installation for a period of Six (6)
years from the date of commissioning and handing over of the entire system, including
the defects liability period. Further, he will also be required to carry out operation and
all inclusive maintenance of the entire system for a period of five years beyond the
defects liability period. Cost of such proposal shall be quoted separately as per the
BOQ. Optional cost shall be taken into account for considering the lowest tender.
25.
OPERATION CONTRACT :
i)
ii)
iii)
iv)
v)
vi)
9:30 hours (from 8:30 am to 6:00 pm or as desired by the employer) a day, year
round
All standby equipment to be operated as per mutually agreed program.
Proper entry and upkeep of relevant log books.
Maintain complaint register. Submit weekly reports.
Proper housekeeping of all areas und er the contract.
Prepare daily consumption report and summary of operation.
Note: Optional cost shall be taken into account for considering the lowest tender.
26.
ALL INCLUSIVE MAINTENANCE CONTRACT :
a)
ROUTINE PREVENTIVE MAINTENANCE SCHEDULE TO BE SUBMITTED.
i)
Schedule to cover manufacturers recommendations and/or common engineering
practice (for all plant and machinery under the contract).
Plant and history card giving full details of equipment and frequency of check
and overhaul.
Monthly status report.
Entire HVAC installation to be painted in fourth year (from commissioning)
before the expiry of operation and maintenance contract.
ii)
iii)
iv)
Note : Optional cost shall be taken into account for considering the lowest tender.
SOL - Delhi University
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b)
i)
ii)
iii)
iv)
v)
c)
i)
iii)
iv)
MANPOWER :
Adequate number of persons to the satisfaction of the owner's site
representative shall be provided including relievers.
Statuary requirements of EPF, ESIC and other applicable labor legislations to be
complied with and monthly certificate to that effect be submitted.
Duly allocation and roaster control shall be contractors responsibility.
No overtime shall be paid by the owner for reasons whatsoever.
d)
SHUTDOWNS :
i)
ii)
Routine shutdowns shall be permitted only during holidays.
Contractors shall be liberty to carry out routine maintenance as and when
required but with due permission of the Owner's representative.
ii)
27.
UPTIME DURING MAINTENANCE CONTRACT
:
98% uptime of all system under contract.
Uptime shall be assessed every month and in case if shortfall during any month
the contract shall be extended by a month.
There shall be no reimbursement for the extended period.
Breakdown shall be attended within ten hours of reporting.
Spare compressor/motor assembly shall be made available within seven
calendar days in case of total breakdown/burnout.
POWER REQUIREMENT :
The contractor shall submit with their tender, the requirement of power at each of their
equipment/system wise/floor wise/section wise.
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TECHNICAL DATA:
The contractor shall furnish complete “technical data” on the equipment by him as required.
PERFORMANCE GUARANTEE:
The contractor shall guarantee that the capacity of various components as well as the whole
system shall not be less than specified.
The contractor shall ensure that the system shall be free of vibration and disturbing sounds.
FOREIGN EXCHANGE:
The contractor shall make his own arrangement to procure the necessary equipment for
which no foreign exchange shall be made available.
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TECHNICAL SPECIFICATION FOR AIR CONDITIONING SYSTEM FOR SCHOOL OF
OPEN LEARNING AT DELHI UNIVERSITY, NEW DELHI
SECTION – I – SYSTEM DESIGN DATA AND GENERAL REQUIREMENTS
1.
GENERAL
The system design, basis of design, estimated requirements and other relevant
data are outlined in this section. The detailed specifications and specific
requirements are outlined in the subsequent sections.
2.
LOCATION
2.1
Directorate of Correspondence Courses in North campus Cavalry Lines & Few
South campus Buildings at Delhi University, New Delhi
3.
SCOPE OF WORK FOR THIS CONTRACT
(To be executed by HVAC contractor)
3.1
The supply at site of all main equipments and items associated with airconditioning & ventilation system detailed under these technical specifications.
3.2
To execute all incidental work at site including all material supply at site required
in the technical specifications. Nature of such works will refrigerant piping work
for VRF/VRV etc. all electrical work connected with HVAC such as cables,
control panel, electric panels etc., erection at site for all manufactured items at
works and also items fabricated at site.
3.3
Routine testing, pressure testing of fabricated components, commissioning of
complete plant at site.
3.4
Performance testing at works of various equipments manufactured at works.
3.5
Performance testing at the site of complete HVAC system as per various
technical requirements.
4.
SYSTEM DESIGN:
4.1
Outside Design Condition
Design conditions have been extracted from the National Building Code (NBC)
Part-8 2005 Design Weather Database for New Delhi.
Outdoor Design Conditions :
Summer
Dry Bulb Temp.
40.5 deg. C (105 deg F )
Wet Bulb Temp.
23.8 deg. C (75 deg F )
Monsoon
Dry Bulb Temp.
Wet Bulb Temp.
SOL – Delhi University
33.3 deg. C (92 deg F )
28.0 deg. C (82.4 deg F )
Page 32
Winter
Dry Bulb Temp.
Wet Bulb Temp.
4.2
4.3
(44.7 deg F )
(43.3 deg F)
Inside Design Conditions :
Summer & Monsoon
Dry Bulb Temp.
24+1 deg C
Relative Humidity (RH)
55% (Design Value – No Control)
(75 +2 deg F)
Outdoor Air Requirements
Outdoor Air Requirements
As per NBC Part-8
Class Room
Offices
Lab
Reception
Library
17 CFM per Person
21 CFM per Person
21 CFM per Person
17 CFM per Person
17 CFM per Person
Lighting & Equipment
Area Description
Class Room
Offices
Lab
Reception
Library
4.4
7.1 deg. C
6.3 deg. C
Lighting
(Watt/Sqft)
1.5
1.5
1.0
2.0
2.0
Equipment Load
1.0 (Watt / Sqft)
2.0 (Watt / Sqft)
3.0 KW
1.0 (Watt / Sqft)
-
Factor Considered for various components of Building Envelope
i) Glass
SHGF = 0.56 & ‘U’ Value = 1.13 BTU / Hr - Sft -oF
Note: The glass considered is single plain 6mm thick glass.
ii) Walls
‘U’ Value = 0.36 BTU / Hr.-Sft - oF.
iii) Roof (Insulated)
‘U’ Value = 0.12 BTU / Hr. - Sft - oF.
iv) Roof (Non- insulated)
‘U’ Value = 0.41 BTU / Hr. - Sft - oF.
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5.
LOAD ESTIMATION
Based on the above parameters the Air Conditioning loads have been worked
out and these are as follows:
1) Main Block- 220 TR (actual capacity)
2) Library & Admin. Block- 184 TR (actual capacity)
3) General Store building I - 2 TR (actual capacity)
4) General Store building II - 20 TR (actual capacity)
Total of North Campus -426 TR (actual capacity)
1) South Campus building I - 12 TR (actual capacity)
2) South Campus building II- 1 TR (actual capacity)
3) South Campus building III- 11 TR (actual capacity)
4) South Campus building IV- 4.5 TR (actual capacity)
5) South Campus building V- 6.5 TR (actual capacity)
Total of South Campus -23 TR (actual capacity)
6.
SYSTEM DESCRIPTION:
1. Air Cooled VRF/VRV system- Main block, Library & Admin block,
General Store building-2, South campus
building-1 & south campus building-3.
and
2. Non-ductable DX split system- General Store building-1, South campus
building-2, 4 & 5.
with inverter technology
6.1
AIR CONDITIONING SYSTEM DESIGN PROPOSAL
It is proposed to install Hi-wall type indoor units for all the class rooms, office
areas & library block.
The drain for respective indoor units shall be combined & will be disposed to the
nearest drain point.
All the outdoor units shall be located on the terrace level of respective buildings
& the refrigerant piping shall be brought down from the terrace level to their
respective floors as shown in the drawing. A small cutout of respective size shall
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be proposed from terrace level to ground floor through which these refrigerant
piping shall be brought down.
Server room shall be provided with dedicated split units requiring 24 hours air
conditioning throughout the year.
7.
MECHANICAL VENTILATION
Lift shafts is pressurized in case of fire in library block & staircases is also
provided with fresh air louvers in library & admin block.
8.
ITEMS TO BE PROVIDED BY OTHER AGENCIES
The following items of works shall be provided by other agencies.
8.1
Provision of main 3 Ph. 50 Hz, 415 VOLTS, 4 wire A.C. main electric supply
cables along with main earthing conductor of required size up to the HVA.C.
main panel.
8.2
Except for the works mentioned above which are in the scope of the Directorate
of Correspondence Courses in North campus Cavalry Lines & Few South
campus Buildings at Delhi University, New Delhi, rest of all works directly or
indirectly associated with completion of air-conditioning work are within the scope
of air-conditioning contractor and shall be assumed to have been included by airconditioning contractor in his quotation on complete turnkey basis.
8.3
In view of the above, air-conditioning contractor will not be allowed to put forth
any claims for extra charges after award of the contract over and above the total
value of the contract. This aspect should be kept in mind by the tenderer while
submitting their quotations.
8.4
After award of contract, air-conditioning contractor shall be solely responsible to
provide all items at site without any extra cost implication to the department, as
required to complete the erection and commissioning of air-conditioning work on
turnkey basis for safe, smooth and trouble free operation and foolproof
performance.
9.0
INCIDENTAL CIVIL ENGINEERING WORKS
Contractor's scope of work in respect of civil engineering works shall be as per
following:
These works shall be done by the contractor within the quoted rates of the
contractor for each item and without any extra charge to the department.
Making opening in walls/floors/ceilings for taking out duct/cables / pipings, etc.,
and making them good.
Making openings in walls/ floors/ ceilings for grouting supports for duct/ cables/
piping work and grouting of supports.
Designing and providing foundation for equipment like Outdoor unit, fresh air unit
and Ventilation Fans etc. floating type foundation block (RCC pads) directly
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resting on finished RCC floor/slab over neoprene rubber pads is to be considered
by the contractor.
10.
DRAWINGS
The drawings forming part of these specifications provide a feasible scheme for
locating the equipment. The contractor may re-arrange the equipment for
improving the layout and meeting the site conditions. All such changes shall
however be subject to the Engineer In Charge approval. These drawings are not
meant to be working drawings, which shall be prepared by the contractor as
required.
11.
TEST DATA
The plant as a whole system shall be tested as per specifications given
elsewhere and complete test data shall be furnished on prescribed data sheet.
12.
TECHNICAL DATA
The contractor shall furnish complete "technical data" on the equipment offered
by him as required under the heading "technical data".
13.
PERFORMANCE GUARANTEE
13.1
The contractor shall guarantee that the air conditioning plant shall maintain the
designed inside Temperature within ±2° F tolerance and shall not exceed the
specified limit at any point in the given area.
13.2
The contractor shall guarantee that the capacity of various components as well
as the whole system shall not be less than the specified capacity.
13.3
The contractor shall ensure that the system shall be free of vibrations and
disturbing sounds.
13.4
The contractor shall guarantee the consumption of power within the designed
limits on hourly basis.
14.
NOISE LEVEL
Air conditioning equipment and materials, (like motors, compressors etc.) shall
be selected, designed and installed in such a manner that the inside noise
criterion for all conditioned spaces shall be in the range of NC-30 to NC-35. Thus
the noise level in conditioned occupied space due to all air conditioning
equipment shall not exceed 52 DB at 150 Hz when measured at any point in the
occupied spaces less than 1.5 meter from any supply air register or 60 cm from
any return air grille.
The outdoor noise criterion for outdoor units, at a distance of 50 meters from the
unit shall be NC-45. Therefore, noise level in open areas 50 meters away from
ODU in any direction shall not exceed 60 DB.
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15.
SHOP DRAWINGS
15.1
The contractor shall prepare and supply the following drawings (4 sets) to the
Consultants within 15 days from the date of award of work
Piping layout for all floors
Outdoor Equipment Layout
Mounting Arrangement Drawing for all equipments on the terrace.
Fixing details for indoor units.
Single Line diagram for refrigerant circulation system
Single Line diagram for electrical distribution system
Fabrication Drawings for all electrical panels
Control wiring details
15.2
The contractor shall re-submit 4 sets of all the drawings to the Consultants within
10 days from date of receiving comments if any from the Consultants after
incorporating the comments.
16.
INSPECTION AND TESTING
i)
The Engineer-in-Charge/Consultants authorized representative shall have full
power to inspect drawings of any portion of the work, examine the materials and
workmanship of the contractor's works or at any other place from which the
material or equipment is obtained. Acceptance of any material or equipment shall
in no way relieve the contractor of his responsibility for meeting the requirement
of the specifications, but shall have to be replaced at its own cost by the
contractor in case the equipment or work is found defective or of inferior quality.
ii)
Routine type tests for the various items of equipment shall be performed at the
contractor's works and tests certificates furnished. The contractor shall permit the
Engineer-in-Charge/Consultants authorized representative to be present during
any or all of these tests. After notification to the Engineer-in-Charge/Consultants
that the installation has been completed, the contractor shall make under the
direction of and in the presence of Client such tests and inspection as have been
specified or as the Client shall consider necessary to determine whether or not,
the full intent of requirements of the plans and specifications have been fulfilled.
In case the work does not meet the full intent of specifications, it shall be rectified
by the contractor at no extra cost and the contractor shall bear all expenses for
any further tests considered necessary.
iii)
All tools, instruments, plants and labour/operating personnel for the test shall be
provided by the contractor at his own cost.
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17.
REJECTION OF DEFECTIVE PLANT/EQUIPMENT
If the complete work/equipment or any portion thereof before it is taken over is
found defective or fails to fulfill, the intent of the specifications, the contractor
shall, on receipt of a written notice from the Engineer-in-Charge/Consultants
forthwith make good the defective work/equipment. Should the contractor fail to
rectify the defects and/or make good the defective work/equipment within a
stipulated time mentioned in the written notice, or replace the equipment at no
extra cost to the department, the department may make good and/or replace at
the risk and expenses of the contractor the whole or any portion of the
work/equipment which is defective or fails to fulfill the requirement of the contract.
The Engineer-in-Charge shall have the right to operate all equipments in any
operating condition, whether or not such equipments have been accepted as
complete and satisfactory. Repairs and alterations shall be made at such times
and as directed by the department.
18.
CLEAN UP WORKS AT SITE
During erection the contractor shall at all times keep the working and storage
areas free from waste or rubbish. On completion of erection he shall remove all
temporary structures, debris and leave the premises clean to the full satisfaction
of the department.
19.
PAINTING WORK
The painting should be carried out as required and as per the instruction of the
Engineer in Charge. The procedure and the standard colour codes are as
follows:
1)
2)
3)
4)
Cleaning the surface
Apply a primer coat of red oxide
Applying two coats of enamel paint of APPROVED colour code after
applying cement primer for plastered surface.
Standard colour code.
a) Hot gas line
b) Copper line
c) Gauge panel
d) All supports/stands
e) Gas equalizer line
f) Electric panel's
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PO Red
Golden paint
Siemens Gray
Black
Yellow
Steel gray
Page 38
SECTION – II - AC EQUIPMENTS
A)
VRF / VRV SYSTEM
1
General
1.1
The scope of this section comprises the design, supply, erection, testing and
commissioning of inverter technology based VRV / VRF type system of air
conditioning conforming to these specification and in accordance with the
requirements of Drawing and Schedule of Quantities. The prices quoted shall
include all the equipment ancillary material as specified and all such items
whatsoever and which may be required to fulfill the intent and purpose as laid
down in the specification and the approved drawings. The contractor shall
calculate equipment capacity based upon design parameters specified for the
system design & verify all the quantities and sizes of refrigerant pipe, fitting,
cables, control cable, pipes, insulation, indoor units, outdoor units etc. before
installation to avoid any shortfall or surplus. The tenderer shall also include all
necessary civil work and MS frame work for installation of outdoor and indoor
units in VRV / VRF based air conditioning system. The cost quoted by tenderer
shall also include the refrigerant gas 410a & its charging for proper & specified
functioning of air conditioning system.
1.2
Civil work/ MS frame work for indoor and outdoor units related to VRV/ VRF
equipments, all cuttings should be properly finished as existing surrounding. The
installation of outdoor unit on the terrace of building should be checked up
structurally & their mounting should be structurally safe for the outdoor unit to
ensure after installation.
a)
Cutting of walls and floors l ceiling.
b)
Making holes.
c)
Sleeves.
d)
Foundation
1.3
The scope in the tender schedule also covers detailed designing of complete airconditioning system on inverter technology based VRV / VRF air conditioning
with air cooled outdoor units system capable of cooling and heating (reverse
cycle) as per individual or season requirement suitable for operation on 415 V, 3
Phase, 50 Hz AC electric supply.
1.4
The outdoor units shall have both cooling & heat pump mode, consisting of one l
multiple outdoor unit with single circuit of refrigerant piping and multiple in door
units of various types. Each indoor unit should have capability to cool or heat as
per seasonal weather changes. This shall also include complete capacity
calculation for indoor and outdoor units complete with CAD drawing, designing &
layout of following.
a)
Outdoor units.
b)
Indoor units.
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c)
Refrigerant piping
d)
Power & Control Cables between Outdoor units & Indoor units.
e)
Building Management system for HVAC.
1.5
While designing the system care should be taken to select outdoor units of
suitable capacity based on design data provided & to economize on available
floor area for installation of outdoor units as well as optimum utilization of outdoor
units. The indoor units should be designed based upon the heat load calculations
for individual rooms/ areas to be air-conditioned and over capacities should be
avoided. The designing of HVAC PC based BMS (Building Management System)
so that complete system shall be monitored & controlled from one location for
optimum utilization of system & for keeping monthly as well continuous log of
important parameters/ events of complete air conditioning system. The design
should also specifically take care of disposal of condensate drain water so that
there is no leakage of condensate water inside the room as well in the route of
condensate water pipe line. The layout of refrigerant piping is to be designed in
such a way so that it should not disturb the aesthetic of the building/ room,
inadvertent damage in the route of pipe should not occur in future & optimum
length of pipe line for efficient air conditioning. After completion of the work four
set of 'as erected/ Commissioned drawing' of activities listed above shall be
submitted.
2
DESIGN DATA
2.1
The work of air-conditioning outdoor and indoor units as specified in schedule of
work is required to be carried out at proposed School of Open Learning, Delhi
University, New Delhi. The firm shall ensure that the design inside condition shall
be achieved in all cases except if the design conditions exceeded and if at any
design stage need for higher capacity outdoor HP is required, necessary
approval shall be accorded based on design analysis and discussions on the
subject. In case of any deviation from the parameters specified, the technical
issues involved shall be brought to the notice of Engineer-in-charge for seeking
necessary approvals to achieve these parameters. Engineer-in-charge, however,
reserves to right to permit any deviations from the parameters as specified.
Note: 1 HP unit = 0.80 TR (Approximately)
2.2
The tenderer shall quote only makes for which he has satisfactorily executed the
job and shall also furnish certificate to the effect that the such equipment has
performed satisfactorily under Indian weather conditions at least for a period of
one year from its commissioning. The performance certificate from the end user
shall also be enclosed with the tender documents.
3
The firm should comply with the parameters as specified in the terms &
conditions.
3.1
The project of air-conditioning of proposed School of Open Learning, Delhi
University, New Delhi is required to be executed in time bound and professional
manner. The equipments involved in air-conditioning are complex in nature
comprising of instrumentation, control and central management system. The job,
therefore calls for highest order of technical expertise and also requirement of
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experience of air-conditioning installation with proven performance. The tenderer,
shall, therefore obtain, before quoting/ the consent of OEM and furnish the same
alongwith the bid document. This consent shall also covers aspects of desired
assistance in the field of design, development, testing, execution, completion &
maintenance/ maintenance spares of the air-conditioning system.
3.2
Notwithstanding the technical details as specified in the tender, the
manufacturers may offer/ indicate systems and necessary design & features
applicable for the offered products at the tendering stage.
4
OUTDOOR UNIT
(i)
For testing and evaluation consideration, JIS B8616 or equivalent standard
shall be applicable.
(ii)
The outdoor unit shall be factory assembled, weather proof casing
(Material of construction of casing shall be vendor's standard design),
constructed from heavy gauge GI sheets steel panels and coated with
baked enamel finish. The outdoor unit shall be completely factory wired,
tested with all necessary controls & filled with first charge of refrigerant
before delivering at site.
(iii) The inverter technology based VRV/ VRF equipment should be capable of
refrigerant piping between indoor units and outdoor unit which shall be
Extendable upto 150m with maximum height difference between outdoor &
indoor unit of 50m & level difference between two indoor units shall be
maximum upto 15m.
The tender will, however, be at liberty to supply outdoor units in ratings as
specified above or higher.
(i)
The outdoor unit shall be factory tested and filled with first charge of
refrigerant R 410a before delivering at site.
(ii)
It should also be provided with duty cycling for inverter capable of changing
the rotating speed of inverter controller to follow variation in cooling &
heating loads & switching starting sequence for better stability and
prolonging equipment life. The firm shall submit the copy of proof in support
of standard mentioned by the manufacturer in the tender for their Outdoor
unit.
(iii) Each outdoor unit shall be provided with suitable amps. 400/440 Volts AC
supply MCCB 25 KA in water proof box as incomer and suitable capacity of
MCCB & internal wiring in the outdoor unit.
(iv) NOTE: Bidder can offer from their standard product feature nearer to the
range indicated.
(v)
The outdoor unit shall be suitable for mix match connection of types of
indoor units.
(vi) It should be provided with duty cycling for switching the starting sequence of
multiple outdoor units.
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(vii) The outdoor unit shall be modular in design and should be allowed for side
by side installation.
(viii) The unit shall be provided with its own microprocessor control panel with
provision for integration with the building management system for Airconditioning system.
(ix) The outdoor units should have anti corrosion paint free plate for easy
mounting of unit.
(x)
The machine must have a sub cool feature to use coil surface more
effectively through proper circuit/ bridge so that it prevents the flushing of
refrigerant from long piping due to this effect thereby achieving energy
savings.
(xi) The outdoor unit should be fitted with low noise level and should not be
more than 67db (A) at normal operation when measured at 1.5m distance
from ground level.
(xii) The outdoor unit should be fitted with low noise aero spiral design fan with
aero fitting grill for spiral discharge airflow to reduce pressure loss and
should be fixed with DC/ AC fan motor for better efficiency.
(xiii) The outdoor units are connected to multiple indoor units of various types as
such the combined operating loads of indoor units may touch 115% to 120%
of the nominal capacity. The outdoor unit shall be able to perform at the
combined loads demands as indicated above.
(xiv) In case of trouble occurs in an indoor units (s), the continuous operation of
system should be possible.
(xv) The body of indoor unit shall be as per manufacturers standard
specifications.
5
REFRIGERANT CIRCUIT
The refrigerant circuit shall include liquid and gas shut-off valves and a solenoid
valves at condenser end.
The equipment must have inbuilt refrigerant stabilization control for proper
refrigerant distribution.
All necessary safety devices shall be provided to ensure the safe operation of the
system.
6
HEAT EXCHANGER
The heat exchanger shall be constructed with copper tubes mechanically bonded
to aluminum fins to form a cross fin coil.
The aluminum fins shall be covered by anti-corrosion resin film/paint/treatment.
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The unit should be with bye-pass/ e-pass heat exchanger to optimize the
path of heat exchanger and for better efficiency of condenser.
The unit shall be provided with necessary number of direct driven low noise level
propeller type fans arranged for vertical discharge. Each fan shall have a safety
guard.
7
SAFETY DEVICES
All necessary safety devices shall be provided to ensure safe operation of the
system. Following safety devices shall be part of outdoor unit:- high pressure
switch, fuse, fan drive overload protector, fusible plug, crankcase heater, over
load relay, overload protection for inverter.
The outdoor roof mounted units shall be provided in such a fashion that these do
not affect the overall aesthetics and ambience of the building. If required these
units shall be suitably camouflaged to give good aesthetic look. These
provisions, however, shall be discussed, if required, at a later date and the prices
for the same shall be worked out separately as extra item.
Noise levels for outdoor units shall not be more than 67 db (measured at a point
1 meter in front of the unit at a height of 1.5 meters.
8
INDOOR UNITS
All indoor units as specified shall have in general; noise levels less than 46 db.
For critical applications noise levels below these limits may, however, be
specified during design stage.
i.
Each unit shall have electronic control valve to control refrigerant flow rate
respond to load variation of the room.
ii.
The address of the indoor unit shall be set automatically in case of individual
and group control.
iii.
In case of centralized control system, it shall be possible to set the address
of individual indoor unit through a liquid crystal remote controller.
iv.
The fan shall be dual suction, aerodynamically designed, Turbo, multi blade
type, statically & dynamically balanced to ensure low noise and vibration
free operation of the system. The fan shall be direct driven type, mounted
directly on motor shaft having support from housing.
v.
The cooling coil shall be made out of seamless copper tubes and have
continuous aluminium fins. The fins shall be spaced by collars forming an
integral part. The tubes shall be staggered in the direction of airflow. The
tubes shall be hydraulically/ mechanically expanded for minimum thermal
contact resistance with fins. Each coil shall be factory tested at 21 kg/sq.m
air pressure under water.
vi.
Indoor unit shall have cleanable type filter fixed to an integrally moulded/
moulded plastic frame. The filter shall be slide in and neatly insertable type.
It shall be possible to clean the filters either with compressed air or water.
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vii.
Each unit shall have computerized PID control for maintaining designed
room temperature. Each unit shall be provided with microprocessor
thermostat for cooling/ heating.
viii. Each indoor high wall unit shall be with corded/ cordless remote controller
as standard features. Corded/ cordless remote shall have standard features
as per standard design of manufacturers.
ix.
9
The power supply of each indoor unit shall be provided by department.
HIGH WALL INDOOR TYPE UNIT
The unit shall be high wall mounted type. The unit shall include pre-filters, fan
section and DX- coil section. The housing of the unit shall be powder coated/
heat treated galvanized steel. The body shall be light in weight and shall be able
to suspend from four comers. The fan shall be aerodynamically designed diffuser
turbo fan type.
Unit shall have an external attractive panel for supply and return air.
10
CENTRALIZED TYPE REMOTE CONTROLLER
A multifunctional compact centralized controller shall be provided with the
system. These controllers shall be capable of controlling all the indoor and
outdoor units and should be capable of integration with the PC based building
management system of HVAC.
It shall be able to control the indoor units with the following functions:
i) Starting/ stopping of Air Conditioners as a zone or group or individual unit.
ii) Temperature setting for each indoor unit or zone.
iii) Switching between temperature control modes, switching of fan speed and
direction of airflow, enabling/disabling of individual remote controller
operation.
iv) Monitoring of operation status such as operation mode and temperature
setting of individual indoor units, maintenance information and
troubleshooting information.
v) Display of air conditioner operation history.
vi) Daily management automation through yearly schedule function with
possibility of various schedules.
The controller shall have wide screen user friendly and can be wired by a nonpolar 2-wire transmission cable to a distance of 1 K.M away from indoor unit. The
cables shall be as per prevailing practice adopted by the manufacturers but shall
have minimum rating of 2 core, 1.5 sq. mm shielded cables suitable for outdoor
application. Cordless/corded remote having star and feature as per standard
design of manufacturer IS acceptable to the Department.
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11
Y–JOINT REF NET SEPARATION
Supply & installation of the Y -Joint/ Ref-net separation refrigeration pipe joints
and headers in the appropriate orientation to enable correct distribution of
refrigerant. The Distribution Joints should be factory insulated with pre-formed
sections of Expanded Polystyrene/Equivalent.
IMPORTANT NOTES:
1. Brand / manufacturing of all Air-conditioning system shall be imported
origin only i.e. indoor and outdoor unit, controllers etc.
2. All the compressor in outdoor unit should be inverter type.
3. Coefficient of performance at 50% load should not be less than 4.6.
4. Compressor should be of scroll / DC twin rotary type only.
B)
AIR COOLED
TECHNOLOGY
1.1
Scope
NON
DUCTABLE
SPILIT
UNITS
WITH
INVERTER
The scope of this section comprise the design, supply and commissioning of aircooled split units with inverter type technology conforming to these specification
and in accordance with the requirements of Drawings and Schedule of
Quantities.
1.2
Type
The split units shall consist of hermetically sealed rotary/ scroll compressor,
motor, evaporator, evaporator fan, air cooled condenser, integral refrigerant
piping and wiring.
Indoor unit shall be housed in insulated cabinet consisting of motor, cooling coil,
blower with motor, filter & insulated drain pan.
Outdoor unit to be installed on terrace/as directed by engineer in charge, shall
consist of compressor, air cooled condenser coil with fans, all mounted on a steel
frame. The total de-rating on all accounts will not exceed more than 10%.
1.3
Capacity
The refrigeration capacity of air cooled split units shall be as shown on Drawings
and in Schedule of Quantities.
1.4
Compressor and Motor
Compressor shall be hermetic rotary / scroll type with inverter technology that
uses precise control of compressor which results in consumption of min. power
and shall have dual pressure-stat, and fan operating oil charge. The motor shall
be suction gas cooled and shall be sealed against dirt and moisture. The motor
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shall be suitable for 1 phase, 50 Hz ±3%, AC supply and provided with
necessary safety devices to withstand voltage fluctuation from 215 V to 230 V.
1.5
Refrigerant piping and Controls:
Refrigerant piping and fitting interconnecting compressor, condenser shall be all
copper and valves shall be brass / gunmetal construction. Each refrigerant circuit
shall include refrigerant filter-drier, liquid line valve and thermostatic expansion
valve.
1.6
Casing
The indoor & outdoor units shall be sectionalized/ cabinet construction. Indoor
units shall be consisting of v, motor, fan section, coil section, filter section, and
drain pan. Outdoor unit consist of compressor, condenser coil & fan. Each
section shall be constructed of not less than 18 gauge thick sheet steel all
welded/bolted construction, adequately reinforced with structural members and
provided with sufficient access panels for proper lubrication and maintenance.
Base panel shall be constructed of fabricated steel structure, provided with an
under frame suitably braced. Each unit shall include one-piece drain pipe
constructed of 18 gauge galvanized sheet steel plate. Drain pan shall be extend
under coil and fan sections with drain connections. Removable panels in fan and
coil sections shall provide access to all internal parts.
Panel shall be internally lined with 2.5 cm thick fiberglass/or equivalent as per
section “Insulation” for the thermal insulation and acoustic lining.
1.7
Fan Motor and Drive
Fan motor shall be TEFC suitable for single phase, 50 Hz ±3%, AC supply and
provided with necessary safety devices to withstand voltage fluctuation from 210250(for single phase machines). Motor shall be provided with soft Starters of
capacities shown in Schedule of Quantities. Motors shall be especially designed
for quiet operation and motor speed shall not exceed 1440 rpm. Drive to fan shall
be provided either directly or through belt-drive with adjustable motor sheave.
Belts shall be of the oil-resistant type.
1.8
Indoor Unit
1.8.1 Hi-wall type:
The unit shall be wall mounted type. The unit shall include pre-filter, fan section
and DX-coil section. The body shall be Light in weight and shall be able to fix on
wall. The fan shall be aerodynamically designed diffuser turbo fan type as per
relevant IS Codes. Unit shall have an external attractive panel for supply and
return air.
1.9
Cooling Coil
Cooling coil shall be fin and tube type having aluminum fins firmly bonded to
copper tubes assembled in zinc coated steel frame. Face and surface areas shall
be such as to ensure rated capacity from each unit and air velocity across each
coil shall not exceed 150 meters per minute. The coil shall be pitched in the unit
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casing for proper drainage. Each coil shall be factory-tested at 21 kg. Per sq.cm.
air pressure under water. Tube shall be mechanically / hydraulically expanded for
minimum thermal contact resistance with fins. The no. of fins per cm. shall be 4
to 5.
1.10
Vibration Isolators
The outdoor units shall be provided with ribbed rubber pad vibration isolators.
1.11
Painting
Shop coats of paint that have become marred during shipment or erection shall
be cleaned off with mineral spirits, then coated with enamel paint to match the
finish over the adjoining shop-painted surface.
1.12
Performance Rating
The unit shall be selected for the lowest operating noise level. In all air
conditioned spaces noise level should not exceed NC-35, 2m away from face of
supply air outlet. Capacity ratings and power consumption with operating points
clearly indicated shall be submitted with the tenders and verified at the time of
testing and commissioning of the installation.
1.13
Temperature - Controls
Each unit shall be provided with a temperature control assembly complete with
cooling thermostat etc. All the controls except
remote thermostat shall be
factory wired and located in a weather proof enclosure. These shall include
fuses, selector switch, safety controls, SPP, winding over heat protection and
any other controls as may be necessary for safe and trouble free operation of the
unit. Non ductable split unit shall have interlocking with the condenser fans.
1.14
Miscellaneous
a) Necessary charge of refrigerant gas and lubricant oil.
b) Continuous purge system with automatic purging of non-condensable
gases/ refrigerant.
c) Control wiring from unit to remote thermostat.
d) Suction, discharge and oil pressure gauge in refrigerant circuit.
e) Refrigerant flow control shall be provided.
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SECTION-III - PIPING
1.
REFRIEGERANT PIPING:
i.
Refrigerant piping for the air-conditioning system shall be upto 19 mm dia of
soft seamless copper tubes & for above 19.1 mm dia the pipe material shall
be of hard seamless copper tubes with pipes material being hard drawn
copper pipe. Forged copper fittings shall be used for the refrigerant piping.
The refrigerant piping arrangements shall be in accordance with good
engineering practices as applicable to the air-conditioning industry, and
shall include charging connections, suction line insulation and all other items
normally forming part of proper refrigerant circuits except Y joint/separation
tubes.
ii.
Before joining any copper pipe or fittings, its internals shall be thoroughly
cleaned by passing a clean cloth via wire or cable through its entire length.
The piping shall be continuously kept clean of dirt etc. while constructing
the joints. Subsequently it shall be thoroughly blown out using nitrogen
gas.
iii.
After completion of installation of the refrigerant piping, the refrigerant piping
system shall be pressure tested using nitrogen gas at a suitable pressure as
specified by OEM (Original Equipment Manufacturer). Pressure shall be
maintained in the system for 48 hours. The system shall then be evacuated
to vacuum of not less than 700 mm Hg and held for 24 hours.
iv.
The supplier of air-conditioning system shall choose sizes as designed and
errect proper interconnections of the complete refrigerant circuit. The
thickness of copper piping shall not be less than 22 SWG for pipes upto 19
mm and 16 SWG for larger dia.
v.
The suction line pipe size and the liquid line pipe sizes shall be selected
according to the manufacturer's specified diameter. All refrigerant pipes
shall be properly supported and anchored to the building/structure using
steel hangers, fasteners, brackets and supports which shall be fixed to the
building/structure by means of inserts or expansion shields or anchor
fasteners of adequate size and number to support the load imposed
thereon.
vi.
The refrigerant piping should be laid in such a way that it should not distort
the interior of the room, wherever the refrigerant pipe has to be laid across
the room, it should be laid in a concealed manner by making appropriate
boxing arrangement with minimum 15 mm thick Gypsum Board matching
with the interior of the room. All associated minor Civil Engineering works
(like chasing on wall, ceiling & re-plastering & repainting etc.) related with
the above items are included in the scope of work. The above scope does
not include false ceiling wherever required.
vii.
To protect Nitrile rubber insulation of outdoor installed copper piping from
degradation due to ultra violet rays and atmospheric condition, it shall be
covered with polyshield coating of at least two coats of resin and hardener
(poly bond make or equivalent). Fibre glass tape shall be helically wound
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with adequate overlap & coated with two coats of resin with hardener to
give smooth & plain finish.
viii. Entire liquid and suction refrigerant pipe lines including all fittings, valves
and strainer bodies, etc. shall be insulated with 19mm/ 13mm thick
electrometric nitrile rubber as specified in BOQ.
ix.
2
Piping work shall be recessed in wall/floor wherever required as per
direction of Engineer-in-charge without any extra cost.
DRAIN PIPING: DULY INSULATED
The drain pipe connection of each indoor unit to the main header should be 20
mm dia/25 mm dia as required. The header pipe should be of 50 mm dia/40 mm
dia as required. The drain-pipe should be heavy duty PVC pipe lSI marked and
conforming to relevant IS complete with fitting as required whereas the
connection of the fan coil unit to the PVC pipe should be with flexible braided
pipe. The drain piping should be insulated with 9 mm thick tubular nitrile rubber
Elastomeric insulation.
For proper drainage of condensate U trap shall be provided in the drain piping
wherever required. All pipe supports shall be prefabricated and pre-painted
slotted angle supports, properly installed with clamps. The condensate drain
pipe arrangement for disposal of condensate water be made in such a way that
there should not be any leakages of condensate water inside rooms as well in
the route of drain water pipe line & water should be discharged at the location
jointly decided with Engineer-in-Charge of work. All associated Civil Engineering
works as per requirement at site in above connection like making chase in the
wall & restoring it original shape by re-plastering & repainting, etc. are included
in the scope of work. The arrangement of drain-pipe shall be made in such a way
that it should not affect the aesthetic of the building as well as is maintenance
friendly & easily accessible.
All the GI drain piping shall be insulated with 9mm thick tubular nitrile elastomeric
rubber insulation.
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SECTION – IV – VENTILATION SYSTEM
1.
GENERAL
The ventilation fans, blowers and air washer shall be complete in all respects and
shall generally comply with the specifications given below:
2.
AXIAL FLOW FANS
2.1
The Axial Fan Blades shall be of Cast Aluminium of aerofoil design for high
efficiency and high static pressure. The blades shall be joined together on cast
aluminium hub.
2.2
The mounting ring shall be of CRCA/sheet steel with steel brackets to connect
the frame, with the Fan/Motor assembly. Rubber mounts shall be provided
between the mounting frame and the mounting brackets.
2.3
Fan shall be complete with motor, motor mount, belt driven (or direct driven) and
vibration isolation type, suspension arrangement as per approved for
construction shop drawings.
2.4
Casing shall be constructed of heavy gauge sheet steel. Fan casing, motor
mount and straightening vane shall be of welded steel construction. Motor
mounting plate shall be minimum 20mm thick and machined to receive motor
flange.
2.5
An inspection door with handle and neoprene gasket shall be welded to the
casing for connection to hanger bolts. Straightening vanes shall be
aerodynamically designed for maximum efficiency by converting velocity
pressure to static pressure potential and minimizing turbulence. Casing shall be
bonderized, primed and finish coated with enamel paint.
2.6
Rotor : hub and blades shall be cast aluminium or cast steel construction. Blades
shall be die-formed aerofoil shaped for maximum efficiency and shall vary in twist
and width from hub to tip to effect equal air distribution along the blade length.
Fan blades mounting on the hub shall be statically and dynamically balanced.
Extended grease leads for external lubrication shall be provided. The fan pitch
control may be manually readjusted at site upon installation, for obtaining actual
air flow values, as specified and quoted.
2.7
Motor shall be energy efficiency squirrel-cage, totally-enclosed, fan cooled
standard round frame, constant speed, continuous duty, single winding, suitable
for 415+ 10% volts, 50 cycles, 3 phase AC power supply, provided with class ‘F’
insulation. Motor shall be specially designed for quiet operation. The speed of the
fans shall not exceed 1000 RPM for fans with impeller diameter above 450 mm,
and 1440 RPM for impeller diameter 450 mm or less. For lowest sound level, fan
shall be selected for maximum efficiency or minimum horsepower. Motor conduit
box shall be mounted on exterior of fan casing and lead wires from the motor to
the conduit box shall be protected from the air stream by enclosing in a flexible
metal conduit.
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2.8
Drive to fan shall be provided through belt drive with adjustable motor sheave
and standard sheet steel belt guard with vented from for heat dissipation. Belts
shall be of oil-resistant type.
2.9
Vibration isolation: The assembly of fan and motor shall be suspended from the
slab by vibration isolation suspension of rubber-in-sheet type.
2.10 Accessories: The following accessories shall be provided with all fans :
a) Outlet cone for static pressure regain.
b) Inlet cone.
Fan shall be factory assembled and shipped with all accessories factory
mounted.
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SECTION – V – INSULATION
1.
GENERAL
The Insulation of water piping, air handling units, ducting, chillers etc., shall be
carried out as per specifications given below:
2.
MATERIALS
The materials to be used for insulation shall be as follows, unless some other
material is specifically mentioned elsewhere. The detailed specifications of the
materials are listed under respective sub heads.
2.1
Pipe Insulation
:
Cross Link Polyethylene
2.2
Drain Pipe Insulation
:
Closed Cell Cross Linked Polyethylene
(XLPE)
3.
DRAIN PIPE INSULATION
3.1
The material for insulation of drain pipes shall be pipe section of closed cell cross
linked polyethylene/nitrile rubber insulation with minimum density of 32 Kg.
/cubm.
3.2
The thickness of insulation shall be a section of 6 mm thick.
4.
REF. PIPING INSULATION
Cross linked closed cell preformed sections of polyethylene/nitrile rubber
insulation of 19/13mm (as per details indicated in BOQ) with minimum density of
55kg/cum, Fire-Retardant and of Fire Rating Class-1 in self-extinguishing and
non-dripping having good ozone resistance and non-fiber erosion and should be
CFC free finally finished with 0.63 mm thick aluminium sheet cladding.
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SECTION – VI
ELECTRICAL INSTALLATIONS
1. GENERAL
1.1
Work shall be carried out in accordance with the specifications, local rules, Indian
Electricity act 1910 as amended upto date, and rules issued there under,
regulations of the Fire Insurance Company and Indian Standard Code of practice
No. 732-1963 (revised). For items of work not covered by any of the above
regulations, wiring rules in the 13th edition of the Institution of Electrical
Engineers (London) shall apply. Definition of terms shall be as per the rules of
the Institution of Electrical Engineers,
1.2
The following exclusion from this contract may be provided by department
through other agencies, as per special conditions of contract:
1.2.1 3-1/2 core PVC insulated PVC sheathed Aluminum conductor Armoured cable
along with two independent earth connection upto the incoming breakers in the
Air conditioning plant room main panel only.
2.
SCOPE
2.1
The scope of work covered under this section shall be inclusive but not limited to
followings, and everything necessary to complete the work shall be provided by
the contractor within the rates quoted by him for the electrical package on
turnkey basis.
2.1.1 All electrical panels including the main panel, local electrical panel boards (EPB)
and distribution boards whether indicated in the drawings or not/ as required for
proper functioning of the system.
2.1.2 All aluminum conductor armoured power distribution cables starting from main
electrical panel in the plant room upto the final outlet.
2.1.3 All copper conductor armoured control cables from the final outlets upto the main
control console.
2.1.4 A centralized control console to indicate the condition of various
drives/equipments and also to control various feeders/drives/equipments.
3.
WIRING SYSTEM
3.1
All power wiring shall be carried out with 650/1100 volts grade PVC insulated,
armoured, overall, PVC sheathed aluminum conductor cables. Cables shall be
sized for starting current and by applying proper de-rating factor. All control
wiring shall be carried out by using 650/1100 volts FR insulated copper
conductor wires in wire trays or in conduit. Minimum size of control wiring shall
be 1.5 sq.mm. FRLS insulated copper conductor wires. Minimum size of
conductor for power wiring shall be 4 sq.mm. 650/1100 volts grade PVC
insulated aluminum conductor wires in conduit.
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4.
MAIN PANEL
4.1
The Non-draw out type L.T. Panel shall be with Aluminium bus bars, indoor type,
free standing, floor mounting type, extendable on either side.
4.2
SITE CONDITIONS
Max. peak room temperature in shade: 40°C.
4.3
STANDARDS
The design, manufacture & testing of the various items are covered by the
following standards:
IS 8623 - 1977
:
Factory built assemblies.
IS 4237 - 1967
:
General requirement for Switchgear and Control gear
for voltages not exceeding 1000V.
IS 2147 - 1962
:
Degree of protection provided by enclosure for low
Voltage switchgear and Control gear.
IS 3619 - 1966)
:
Phosphate treatment. IS 6005 - 1970)
IS 5 - 1978
:
Colour for ready mixed paints & enamels.
IS 5082 - 1969
:
Wrought aluminum for electrical purpose.
BS - 162
:
Clearance & creepage for bus systems.
IS 375 - 1963
:
IS 4237 - 1967
:
Clearances & Creepages for Part I & I devices.
IS 6875
Part II - 1973.
:
Push buttons & related control switches including
control contactors.
IS 9224 Part I &
II - 1979.
:
HRC Fuses.
IS 2516 Part I &
:
Alternating current circuit breakers (ACB).
II Sec. I - 1977.
:
Voltage not exceeding 1000V AC or 1200V DC.
IS 3231 - 1965
:
Protective relays.
IS 3156 - 1965
:
Voltage transformers.
IS 2705 - 1981
:
Current transformers.
IS 1248 - 1968
:
Elect. indicating instruments.
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Marking arrangement for bus bar/cable.
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4.4
SPECIFICATIONS
Rated System
:
415V. 50Hz. TPN.
Rated insulation level :
660V rms.
HV withstand level :
:
2.5 KV rms for power circuit. (for 1 min).
1.5KV rms for control circuit
Horizontal busbar
:
As indicated in S.O.Q. rating. / Drawings.
:
Upto 50kA rms for 1 sec. 110kA rating of H. Bus &
Rated short time
peak
(36MVA). V. Bus.
Protection of enclosure :
4.5
IP43.
CONSTRUCTION
The standard L.T. Panel shall contain a basic frame assembly reinforced with
formed sheet steel profiles and cross members. Sheet steel partitions shall be
bolted to this frame to form the full structure. Basic structure is made out of
minimum 14 S.W.G (2 mm. thick) sheet steel. The load bearing members are
made out of 14 S.W.G. and non-load member items are out of 16 S.W.G. (1.6
mm.) sheet steel. All sheet steel shall be cold rolled.
The pretreatment process shall involve de-greasing, rinsing, de-scaling, rinsing,
de-rusting, rinsing, phosphating, rinsing & passivation. After this, it shall be spray
finished with a primer, oven dried and spray painted with finish paint, 2 coats wet
on wet. Then it shall be baked in oven to achieve a uniform, smooth and tough
film. The standard shade offered shall be light gray shade 631 semigloss as per
IS: 5. The painting shall be with synthetic enamel stoving grade to a final overall
dry film thickness of 30/40 microns stoving grade to a final overall dry film .
The Panel design shall be of single front cubicle with horizontal busbars mounted
at top, extendable on either side. The breaker, instruments and aux. equipments
shall be accessible from front. The cable terminations shall be accessible either
from front top or from the rear side. The panel may also be of double front
arrangement.
Vertical busbars shall be provided at one side. The width and depth of the
section shall depend upon the current rating of the ACBs and busbars
incorporated.
Each section shall be divided into various compartments, enclosing either Air
Circuit Breakers or On Load Change over Switch fuse Units or Switch Fuse/Fuse
Switch Units or Auxiliary equipments. Max. of 2 tier ACB compartments shall be
provided in one section.
A standard transportable shipping section shall contain max. Three sections with
length not exceeding 3 m and weight not exceeding 2.5 tonnes.
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The incoming terminals of the breakers shall be connected to the busbar by
suitable links. The outgoing terminals shall be extended in the cable chamber for
direct cable connections. These shall be identified by coloured PVC tape/paint,
wherever required link extension to form busduct entry from top shall also be
provided.
Adequate shrouding and caution notice plate shall be provided to prevent the
accidental contact to live terminals.
The ACBs shall be mounted on the channel frame and shall be partitioned at the
top by insulated barrier on the other side by sheet metal barrier with necessary
cutout for power linking for control wiring. The control equipment, fuses, timers,
contactors, etc., shall be laid out in standard fashion on a painted base plate and
fixed with screws to the frame at appropriate location.
Each ACB module compartment shall be provided with front access door made
out of 14SWG (2 mm.) sheet steel. All closing and opening operation of ACB
(mechanically or electrically) of draw out ACB upto test position shall be
performed from the front without opening the door. The breaker can be left in
TEST position with the door fully closed.
Basic instrument such as ammeter, voltmeter with selector switch and lamps
shall be provided on the ACB module door itself. Meters such as KW, Hz, PF
may be provided in a separate module for a single tier ACB or on the vertical bus
door for a 2 tier ACB panel. Protective relays shall be located in the bottom most
compartment or on the vertical bus chambers. Meters/relays shall be identified
with feeder identification name plates when they are located away from feeder
module.
Suitable inscription plates shall be provided to identify the feeders, function of
the doors mounted devices and caution plate shall be provided at appropriate
locations.
Suitable M.S. removable, undrilled gland plates shall be provided. For single core
cables non magnetic gland plates shall be provided.
4.6
SAFETY INTERLOCKS
The following safety interlock shall be provided for each module:
i) ACB is ON door cannot be opened - (Defeat interlock to be provided.)
ii) Padlocking in OFF position (locks to be provided.)
iii) Castle interlocks for feeder co-ordination as per standard requirements.
4.7
AIR CIRUIT BREAKERS
The Air Circuit Breakers shall be draw out type.
The air circuit breakers shall comply with IS - 2516 - 1977.
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The air circuit breakers shall have 100% certified rating when mounted in the
panel. (All de-rating factors shall be clearly indicated by the contractor in his
offer).
The incoming and the outgoing breakers shall be provided either with static trip
release integrally mounted on the breakers/or other suitable relays. These
release/relays should have the following adjustments:
a) Over current pick-up.
b) Inverse tripping time at 6 times the current setting.
c) Short time delay pick-up at various current settings.
d) Short time delay - instantaneous.
e) Earth fault pick-up at various current settings.
f) Earth fault delay - instantaneous.
All Air Circuit Breakers shall be computer compatible.
The incoming breaker shall also have an under-voltage release, the voltage of
which shall be calibrated for pick-up and drop off in accordance with IS 2516 1977.
The air circuit breaker being used as incomer shall have the following
accessories, indications, meters, provided on its housing;
i)
1 No. power factor meter (+) 0.5-1-(-) 0.5 range.
ii)
1 No. 0-500 V range voltmeter with selector switch.
iii)
1 No. ammeter of suitable range and C.T.s as indicated on the drawing/s
with selector switch.
iv)
1 No. Indicating Lamp for the following;
a) Red for ACB ON.
v)
4.8
3 No. Phase indicating Lamps.
MOULDED CASE CIRCUIT BREAKERS (MCCB)
The normal Moulded case circuit breakers shall have all live parts totally
enclosed in a moulded insulated housing. It shall have a quick make and quick
break mechanism. The mechanism shall be trip free so that the contacts cannot
be held closed against a fault. The bi-metallic mechanism shall be provided for
inverse time current trip characteristic, to prevent interruption on normal inrush
currents or temporary overloads. The instantaneous release shall be provided to
protect equipment against very high current or short circuits. There shall be a
common trip bar so that in case of fault on any of the phases, all the three
phases trip together.
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The arcing shall be totally contained within the housing so that the possibility of
any damage to any adjacent equipment or personnel due to accidental
mishandling is avoided. Individual arc chutes shall be provided on each phase to
draw the arc away from the contact tips, thus, quenching it rapidly.
The minimum breaking capacity of Moulded Case Circuit Breakers at 415 V AC
and 0.8 PF shall be 35 KA. Each Moulded Case Circuit Breakers shall have the
following accessories:
a)
Auxiliary switch.
b)
Remote trip facility.
It shall also have the following indications and metering;
a)
CT operated ammeter of suitable rating as indicated on the drawing/s
complete with CT and selector switch.
b)
1 Nos. indicating lamps for the followings:
i)
4.9
Red for MCCB ON
CONSTRUCTION OF MCCB
4.9.1 The unit housing shall be of robust construction designed to withstand the
hardest conditions met in industry. It should have double breaks per phase to
ensure complete isolation of the fuse links when the unit is in the `off' (isolation)
position. The `on' and `off' positions of the handle shall be clearly indicated and
the action of the switch should be positive. The contacts of all units should be
silver-plated.
Interlocks must be provided to ensure that the enclosure cannot be opened until
the switch is in the `off' position. It should, however, be possible for a competent
examiner to operate the switch with the enclosure open by releasing a suitable
interlock.
The switch should have an external earthing terminal to enable the enclosure to
be earthed. The arrangement and disposition of the parts in the unit should
provide for straight through connections thereby avoiding looping in of cables.
The unit should be fitted with top and bottom detachable end cover and provision
should be made for fixing cable boxes to the flanges of the unit in place of end
covers.
The unit should be capable of breaking the stalled current of the largest induction
motor with which it is likely to be associated. If necessary, the contractor should
be prepared to produce type test certificates set out in the appropriate Indian
standards with which the unit complies.
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4.10
BUSBAR SYSTEM
4.10.1 HORIZONTAL BUSBAR
The horizontal busbars shall be located at the top/ bottom/ center busbar
compartment. The busbars shall be of electrical grade, high conductivity,
aluminium sections of required ratings.
4.10.2 VERTICAL BUSBAR
The vertical busbar shall also be made from high conductivity electrical grade
Aluminum sections, the rating and size shall depend upon the total rating of all
feeders in the column considering the diversity factors O.9. The busbars shall be
provided with black heat shrinkable PVC sleeving/PVC taping with R.Y.B phase
identification at regular intervals.
4.10.3 NEUTRAL BUS
It shall run parallel to horizontal and vertical busbars. Standard neutral busbar
size is half the size of main busbar.
4.10.4 CONTROL BUSBAR
Control bus of 60A and 415V shall be provided at top in the front portion. These
shall be supported with insulator at required interval.
4.10.5 EARTH BUS
50 x 6.3 mm. Cu earth bus shall be provided in the bottom most compartments
along the entire length of the board for connection to project earth at either end.
4.10.6 BUS JOINTS
Joining between busbars shall be by using rigid or flexible bus links.
4.10.7 BUS BAR SUPPORTS
Both horizontal and vertical busbars shall be supported at uniform intervals on
high impact, anti-tracking, non-hygroscopic, arc resistant, flame retardant, self
extinguishing GRP (Glass reinforced plastics), insulators. These insulators shall
be type tested for short circuit withstands capacity.
4.11
MODULES
4.11.1 INCOMER
Two number ACBs in single tier or in 2 tier shall be provided as incomer. Cable
entry from bottom shall be provided for each incomer breaker.
4.11.2 OUTGOING FEEDERS
The outgoing feeders shall be as indicated in Drawing. Irrespective of the panel
depths, the panels shall be coupled front flush. Each outgoing feeder shall have
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the provision for Cable/bus duct connection from the bottom/top as per site
requirement.
4.12
CONTROL WIRING
All control wiring shall be done as a standard, using 1.5 sq.mm. multi-strand
FRLS insulated copper wires. These shall be black in colour for AC and grey in
colour for DC. The C.T. connections shall be done using 2.5 sq.mm. multi-strand
PVC insulated copper wires of red colour.
The outgoing control wires shall be terminated from the equipment terminals to
control terminal block in cable chamber. Whenever required PVC channels shall
be used for wire routing. On either ends of these wires self locking yellow
ferrules with black letters shall be provided. Multistrand wire termination shall be
provided with crimping type lugs.
4.13
INTER-MODULE WIRING
The control wiring between modules located in the same vertical section shall be
connected at the respective terminal blocks/terminals. These shall be routed
through the cable duct in PVC wire channels. Inter connections between adjacent
cubicle in the same shipping sections shall be done in a similar way.
4.14
CURRENT TRANSFORMERS
Current transformer meant for metering & protection shall be mounted on the bus
links either on the incoming side or outgoing side as the case may be. They shall
be wired and terminated suitably for external connection.
4.15
FUSES
All fuses shall be of the HRC cartridge type, conforming to IS:2208 mounted on
plug-in type of fuse bases having a prospective current rating of not less than 46
KA. Fuses shall be provided with visible operation indicators to show that they
have operated. Insulated fuse pulling handle shall be supplied with each control
panel.
4.16
INDICATING INSTRUMENTS & METERS
Electrical indicating instruments shall be flush mounted analogue type having
min. 96 mm square dial. Wherever possible, amp. meters measuring upto 10
amps. shall be directly connected, while those measuring above 10 amps. shall
be connected through suitable CTs.
4.17
CONTROL AND SELECTOR SWITCHES
Control and instrument switches shall be of the rotary type and shall be provided
with properly designated plate. Control switches shall have momentary contacts
spring return to center with pistol grip handle. Instrument and selector switches
shall have stay put contacts. The number of contacts and operation of each
switch shall be as per the requirements of the connected circuit enclosed data
sheet/enclosed drawing.
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4.18
PUSH BUTTONS
All push buttons shall be of push to actuate type have 2 `NO' and 2 `NC' self
reset contacts. They shall be provided with designation plates, engraved with
their functions. push button contacts shall be rated for 10 amps at 415V A.C.
and 0.6 Amp. inductive breaking at 220V D.C.
4.19
INDICATING LAMPS
Indicating lamps shall be of the filament type having double contact bayonet caps
and low watt consumption. Lamps shall preferably be provided with series
resistors to prevent short circuiting of control supply of filament fusing. Colour of
lens shall be as per enclosed drawing/data sheet. Lamp grip shall be supplied
along with the panel so that replacement of the bulb
can easily be done from
the front of the panel.
4.20
DRAWINGS
The contractor shall provide the following drawings for approval to the
department before commencement of supply/ fabrication.
i)
ii)
iii)
5.
General layout-Plan, section, elevations
Foundation
Wiring-Power & Control
ROTARY SWITCHES
Switches upto 60amps shall be rotary type with compact and robust construction,
build up from one or more stacks with contacts and a positioning mechanism with
stop as required. The terminals shall be shrouded with insulation to prevent
accidental contact with live parts. Rotary switches shall be backed up with
moulded type HRC fuse fittings of appropriate rating.
6.
SELECTOR SWITCH
When called for, selector switches of rated capacity shall be provided in control
panel, to give the choice of operating equipment in selective mode.
7.
STARTERS
Each motor shall be provided with a starter of suitable rating. Starters shall be in
accordance with IS:1822-1967.
Direct on line starters shall be provided for motors upto 10 HP. Star Delta type
starters shall be provided for motors of 12.5 HP and above HP capacity.
Starters contactors shall have 3 main and 3 auxiliary contacts and shall be air
break type suitable for making and breaking contact at minimum power factor of
0.38. `For design consideration of contactors, the starting current of connected
motor shall be assumed to be 6 times the full load current of the motor in case of
direct-on-line starters, and 3 times the full load current of the motor in case of
star delta/Reduced Voltage Starters.
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Main and auxiliary contacts shall be silver or silver alloy. The insulation for
contactor coils shall be of class "B". Operating coils of contactors shall be
suitable for 220/415 ± 10% volts AC, 50 cycles supply system. The contactors
shall drop out when voltage drops to 80% of the rated voltage. The housing of
the contactors shall be heat resistant and having high impact strength. Each
starter shall have thermal overload protection on all three phases and also single
phasing preventing relay.
8.
OVER LOAD RELAYS
Contactors shall be provided with a three element, positive acting ambient
temperature compensated time lagged hand reset type thermal over load relay
with adjustable setting. Hand-reset button shall be flush with the front door for
resetting with starter compartment door closed; Relays shall be directly
connected for motors upto 150 HP capacity. C.T. operated relays shall be
provided for motors above 150 HP capacity. Heater circuit contactors shall also
be provided with overload relays.
9.
SINGLE PHASE PREVENTERS
Single phase preventers shall be provided on all the three phase motor starters
and shall be in conformity with relevant ISI standards. Single phase preventers
shall act when the supply voltage drops down to 90% of the rated voltage or on
failure of one or more phases.
10.
TIME DELAY RELAYS
Time delay relays shall be adjustable type with time delay adjustment from 0-180
seconds and shall have one set of auxiliary contacts for indicating lamp
connection.
11.
TOGGLE SWITCH
Toggle switches, where called for, shall be in conformity with IS 3854-1969 and
shall be of 5 amps rating.
12.
PUSH BUTTON STATIONS
Push button stations shall be provided for manual starting and stopping of
motors/equipment as called for, `RED' and `GREEN' colour push buttons shall be
provided for `starting' and `stopping' operations. `Start' or stop indicating flaps
shall be provided for push buttons. Push buttons shall be suitable for panel
mounting and accessible from front without opening door, dock lever shall be
provided for `Stop' push button. One set of normally open and one set of
normally closed contacts shall be provided in push button stations. The push
buttons contacts shall be suitable for 15 amps current capacity.
13.
CONDUITS
Conduit work shall be done for wiring as per CPWD specifications part - I as
amended upto date.
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14.
CABLES
14.1
M.V. cables shall be PVC insulated aluminum conductor and armoured cables
conforming to IS: 1554 (part-I) -1988. M.V. cables shall be armoured and suitable
for laying in trenches, duct and on cable trays as required. M.V. cables shall be
termite resistant. Control cables, and indicating panel cables shall be multi core
PVC insulated copper conductor and armoured cables. Digging and back filling of
trenches, sand & bricks, saddles clamps etc. shall be included in the package
and nothing extra shall be paid to the contractor on this account.
14.2
WIRES
650/1100 volts grade FR insulated aluminum conductor wires in conduit shall be
used.
14.3
CABLE LAYING
Cable shall be laid generally in accordance with Indian standard code of practice.
Cables shall be laid on 14 gauge perforated M.S. sheet cable trays as approved
by the Supervisor. Easy access to all cables shall be provided to allow cable
withdrawal/replacement in the future. Where more than one cable is running,
proper spacing shall be provided to minimize the loss in current carrying
capacity.
Cables shall be suitably supported with wooden cleats when run on wall/floor
ducts. When buried, they shall be covered with a layer of soft sifted sand and
protected with cement concrete tiles. Special care shall be taken to ensure that
the cable are not damaged at bends. The radius of bend of the cables when
installed shall not be less than 12 times the diameter of cable.
14.4
CABLE SIZES
Power Wiring shall be of the following sizes of cables or of sizes indicated on
Electrical single line diagram (whichever is higher);
a)
Upto 5 HP motors/2KW heaters. 3 x6 sq.mm Aluminum conductor cables.
b)
For 9 KW Heaters – 4 x10 sq.mm Aluminum conductor cables.
c)
From 12.5 HP to 15 HP motors 2 Nos. 3x6 sq.mm Aluminum conductor
armoured cables.
d)
From 20 HP to 25 HP motors 2 Nos.3x10 sq.mm Aluminum conductor
armoured cables
e)
From 30 HP to 35 HP motors 2 Nos. 3x25 sq.mm Aluminum
conductorarmoured cables
f)
From 40 HP to 50 HP motors 2 Nos. 3x35 sq.mm Aluminum conductor
armoured cables.
g)
From 60 HP to 75 HP motors 2 No. 3x50 sq.mm Aluminum conductor
armoured cables.
SOL – Delhi University
Page 63
15.
h)
100 HP motor 2 No. 3x70 sq.mm Aluminum conductor armoured cables
i)
150 HP motor 2 No. 3x120 sq.mm Aluminum conductor armoured cables
j)
200 HP motor 2 No. 3x150 sq.mm Aluminum conductor armoured cables.
All the switches, contactors, push button stations, indicating lamps shall be
distinctly marked with a small description of the service installed. Circuit wiring
diagram of control panel shall be fixed to the cover of control panel for
verification. The following capacity contactors and overload relays shall be
provided for different capacity motors:
Motor rating
Type of
Starter
Contactor current
rating
Overload relay
range
a.
5.0 HP motors
DOL
16 amps
6-12 amps
b.
7.5 HP motors
DOL
16 amps
6-12 amps
c.
10.0 HP motors
Star Delta
16 amps
6-12 amps
d.
12.5 HP motors
Star Delta
32 amps
6-12 amps
e.
15.0 HP motors
Star Delta
32 amps
10-16 amps
f.
20 HP motors
Star Delta
63 amps
14-20 amps
g.
25 HP motors
Star Delta
63 amps
18-24 amps
h.
30 HP motors
Star Delta
63 amps
17-25 amps
i.
35 HP motors
Star Delta
63 amps
22-32 amps
j.
40 HP motors
Star Delta
63 amps
22-32 amps
k.
45 HP motors
Star Delta
125 amps
25-40 amps
l.
50 HP motors
Star Delta
125 amps
25-40 amps
m.
60 HP motors
Star Delta
125 amps
38-63 amps
n.
65 HP motors
- do -
125 amps
38-63 amps
o.
70 HP motors
- do -
125 amps
38-63 amps
p.
75 HP motors
- do -
125 amps
38-63 amps
q.
100 HP motors
- do -
160 amps
50-90 amps
r.
125 HP motors
- do -
200 amps
70-110 amps
s.
150 HP motors
- do -
200 amps
70-110 amps
SOL – Delhi University
Page 64
t.
16.
200 HP motors
-do-
300 amps
C.T. operated relay
DRAWINGS
Shop drawings for control panels and wiring of equipment showing the route of
conduit/cable shall be submitted by the contractor for approval of purchasers
before starting the fabrication of panel and starting the work. On completion, four
sets of completion/"As-installed" drawings incorporating all details like, conduit
routes, number of wires in conduit, location of panels, switches, junction/pull and
cable route etc. shall be furnished by the Contractor.
17.
PAINTING
All sheet steel work shall undergo a process of degressing, thorough cleaning,
and painting with a high corrosion resistant primer. All panels shall then be
backed in an oven. The finishing treatment shall be by application of synthetic
enamel paint of approved shade.
18.
TESTING
Before commissioning of the equipment, the entire electrical installation shall be
tested in accordance with code of Practice IS: 732-1963 (Revised) and test
report furnished by a qualified and authorized person.
All tests shall be carried out in the presence of Engineer-in- Charge.
19.
MISCELLANEOUS
19.1
The final connections to the equipment shall be through flexible connections in
case of conduit wiring and also where the equipment is likely to be moved back
and forth, such as on slide rails.
19.2
An isolator switch shall be provided at any motor which is separated from the
main switch panel by a wall or partition or other barrier or is more than 15 meters
away from the main panel.
19.3
Two separate and distinct earthing conductors shall be connected from the
equipment upto the main switch board panel.
19.4
The branch lines from the main panel to each equipment shall be separated and
should not cross other lines.
19.5
The entire installation shall be tested as per electricity rules and IS:732-1963 with
amendments 1,2 & 3 prior to the commissioning of the plant and a suitable test
report furnished by a competent and authorized person. The test report will be
obtained by contractor himself at his own expenses.
19.6
All exposed switch board panels, conduits, hangers etc. shall be given 2 coats of
suitable paint of approved colour, when all work has been completed.
SOL – Delhi University
Page 65
SECTION – VII
MODE OF MEASUREMENTS
1.
UNIT PRICES IN THE SCHEDULE OF QUANTITIES
1.1
The item description in the schedule of quantities is in the form of a condensed
resume. The unit price shall be held to include everything necessary to complete
the work covered by this item in accordance with the specifications and drawings.
The sum total of all the individual item prices shall represent the total price of the
installation ready to be handed over.
1.2
The unit price of the various items shall include the following:
1.2.1 All equipment, machinery, apparatus and materials required as well as the cost
of any tests which EIC may request in addition to the tests generally required to
prove quality and performance of equipment.
1.2.2 All the labour required to supply and install the complete installation in
accordance with the specifications/drawings.
1.2.3 Use of any tools, equipment, machinery, lifting tackle, scaffolding, ladders etc.
required by the contractor to carry out his work.
1.2.4 All the necessary measures to prevent the transmission of vibration.
1.2.5 The necessary material to isolate equipment foundations from the building
structure, wherever necessary.
1.2.6 Storage and insurance of all equipment apparatus and materials.
1.3
The contractor's unit price shall include all equipment, apparatus, material and
labour indicated in the drawings and/or specifications in conjunction with the item
in question, as well as all additional equipment, apparatus, material and labour
usual and necessary to make in question on its own (and within the system as a
whole) complete even though not specifically shown, described or otherwise
referred to.
1.3.1 The contractor's unit price shall also include all taxes, duties, octrois, works
contract tax etc as applicable.
3.
MEASUREMENTS OF PIPING, FITTINGS, VALVES, FABRICATED ITEMS
3.1
PIPE
3.1.1 All pipes shall be measured in linear meter (to the nearest cm) along the axis of
the pipes and rates shall be inclusive of all fittings e.g. tees, bends, reducers,
elbows etc. Deduction shall be made for valves in the line.
3.1.2 The rate quoted shall be inclusive of cutting holes, exposing reinforcement in wall
and ceiling and floors and making good the same and inclusive of all items as
specified in specification and schedule of quantities.
SOL – Delhi University
Page 66
3.1.3 Rates quoted shall be inclusive of providing and fixing pads wherever specified
or required by the Engineer in charge.
3.1.4 Flexible connections, wherever required or specified shall be measured as part of
straight length of same diameter, with no additional allowance being made for
providing the same.
3.1.5 The length of the pipe for the purpose of payment will be taken through the
centerline of the pipe and all fittings (e.g. tees, bends, reducers, elbows, etc.) as
through the fittings are also resumed to be pipe lengths. Nothing extra
whatsoever will be paid for over and above for the fittings.
3.3
STRUCTURAL SUPPORTS
Structural supports including supports fabricated from pipe lengths for pipes shall
be measured as part of pipe line and hence no separate payment will be made.
Rates shall be inclusive of hoisting, cutting, jointing, welding, cutting of holes and
chases in walls, slabs or floors, painting supports and other items as described in
specifications, drawings and schedule of quantities or as required at site by
Engineer in Charge.
4.
INSULATION
4.1
The measurement for piping, and ducts shall be made over the bare uninsulated
surface area of the metal.
4.2
PIPES
4.2.1 PIPES
The measurements for insulation of piping shall be made in linear metres through
all valves, flanges, and fittings. Pipes/bends shall be measured along the
centerline radius between tangent points. If the outer radius is R1 and the inner
radius is R2. The center line radius shall be measure as (R1+R2)/2.
Measurement of all fittings shall be measure with the running metre of pipe line
as if they are also pipe lengths. Nothing extra over the above shall be payable for
insulation over fittings in pipe line/routings. Fittings that connect two or more
different sizes of pipe shall be measured as part of the larger size.
4.3
ACCESSORIES INSULATION
4.3.2 In case of curved or irregular surfaces, measurements shall be taken along the
curves.
4.3.3 The unit insulation price shall include all necessary adhesives, vapour proofing
and finishing materials as well as additional labour and material required for
fixing the insulation.
SOL – Delhi University
Page 67
APPENDIX – I
LIST OF APPROVED MAKES OF MATERIALS
S.
No.
Items
1
Air cooled VRV/VRF
2
Dx split Units with Inverter
Technology
Approved Make
Mitsubishi Electric / Daikin / Toshiba /
O’ General
Mitsubishi Electric / Daikin / Toshiba /
O’ General
Kruger/ Nictora/ System Air/
Flaktwood/ Airflow
3
Axial Flow Fan
4
Glass wool
5
Closed-cell polyethylene Insulation/
Nitrile rubber
Paramount / Armacell / Supreme
6
Electrical Panel
Neptune / Adavnce (NOIDA) / Vidhyut
Control / KEPL
7
Copper Piping
8
Electrical Cables
Bonton / Lapp cable/RR Kable/ KEI/
HPL/ Havells
9
MCCB
L&T / Siemens / Legrand/ ABB/ HPL/
Havells
10
Contactor
Note:
UP Twiga / Owns Conning
Mandev Tubes / Shree Shyam / Rajco
L & T/ Siemens / BCH/ ABB
For any item not covered in the above list, the contractor shall get the samples
approved from the authorized representative of Engineer-in-Charge /
CONSULTANTS before the supply is made.
SOL – Delhi University
Page 68
APPENDIX – II
TECHNICAL DATA TO BE FURNISHED BY THE TENDERER FOR THE
VRF/ VRV SYSTEM
Tenderers are required to separately fill the Data for each rating of the equipment
offered.
1.0
OUTDOOR UNITS (ODU)
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
1.11
1.12
1.13
1.14
1.15
1.16
1.17
1.18
1.19
1.20
1.21
1.22
1.23
1.24
1.25
1.26
1.27
1.28
1.29
Make and model number of the compressor:
Applicable codes and standards for manufacture of ODU
Normal rating of the Outdoor unit
Actual rating of the ODU
Number of compressors in each outdoor unit
Type of compressor
Type of modulation
Capacity of each compressor
Power consumption per TR at rated capacity of the ODU
Total power consumption of rated capacity of the ODU
Total Power consumption at actual capacity
Motor rating of each compressor
AC or DC motor
Type of starter for the compressor motor
Whether the motor starters are integral to the ODU
Type of refrigerant
Quantity of refrigerant in the circuit
Noise level of the ODU at one meter from the ODU
Energy Efficiency Ratio of the offered ODU
Type of oil recovery system
Range Capacity
Number of inverters where applicable for the ODU
External static pressure
Construction of the ODU
Modular/ fabricated
Casing material
Frame work material
Painting/ coating
Method of vibration isolation
2.0
INDOOR UNITS(IDU)
2.1
2.2
2.3
2.4
2.5
2.6
Make and model number of the IDU
Material of construction
Type of indoor unit
Type of mounting of the indoor unit
Power consumption of each indoor unit at full load
Air flow through the indoor unit
SOL – Delhi University
Page 69
SPLIT AIR COOLED AIR-CONDITIONING UNIT WITH INVERTER TECHNOLOGY
1.
GENERAL
i)
ii)
iii)
iv)
v)
vi)
vii)
Make
Country of Origin
Type (Open/hermetic)
Model No.
Refrigerant
Overall dimension, mm
Operating Weight (Kg.)
2.
i)
PERFORMANCE (Tender design conditions)
Maximum full load Input power (IKW/TR)
ii)
IPLV (IKW/TR)
3.
COMPRESSOR
3.1
3.9
Suction temperature degree
C/pressure Kg./Sq.cm.
Condensing temperature
Degree C/pressure Kg./Sq.cm
Operating speed RPM
Capacity of chilling Unit
At above conditions – Kcal/hr.
Total power consumed at
Above conditions – KW
Degree of sub-cooling on
Which above capacities are
Based – degree C.
Maximum capacity of Unit
Suction temperature degree C/
Pressure Kg./Sq.cm.
Condensing temperature degree C/
Pressure Kg./Sq.cm.
Number of stages.
4.
CAPACITY CONTROL
3.2
3.3
3.4
3.5
3.6
3.7
3.8
4.1
4.2
5.
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
Type
Range
DRIVE
Make
Type
Rating – KW
Protection
Insulation class
Moment of inertia of rotating
Ratio of startingTorque to rated torque.
Load Vs torque curves
SOL – Delhi University
Page 70
5.9
Speed RPM
5.10 Efficiency %
6.
MOTOR STARTER
6.1
6.2
6.3
6.4
6.5
6.6
6.7
Make
Type
Model
Current limit (%)
Control voltage
Ambient temp.
Indicate safety provided
7.
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
7.15
7.16
7.17
7.18
7.19
Evaporator Coil & Condenser Coil
(Separate sheet to be attached for each size of AHU)
Manufacturer
Model No.
Total heat transfer area (Sq.mt.)
Air Quantity (CMH/CFM)
No. of Tubes
Static pressure (INCH WG/mm WG)
Tube dia and thickness.
Tube material
Fin material
Bonding of fins
No. of fins per Cm.
No. of rows of coil
Coil face velocity
Coil face area
Type of filters
Air inlet temperature DB/WB
Air outlet temperature DB/WB
Air side pressure drop mm WC.
Refrigerant side pressure drop mm WC.
8.
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
ELECTRIC MOTOR FOR EVAPORATOR & CONDENSER FAN
Manufacturer
Country of Origin
Type of motor
Motor Horse Power
Method of Starting
Range of working voltage
Rate speed (RPM)
Class of Insulation
9.
9.1
9.2
9.3
9.4
9.5
9.6
9.7
CENTRIFUGAL FANS FOR EVAPORATOR & CONDENSER
Manufacturer
Model No./type of fan
Overall dimension (mm)
Air quantity CMH
Static pressure (mm wc)
Drive (Direct/V-belt)
Speed RPM
SOL – Delhi University
Page 71
9.8
9.9
9.10
9.11
9.12
9.13
9.14
9.15
9.16
9.17
9.18
9.19
9.20
9.21
Fan shaft (KW)
Limit load (KW)
Motor rating KW-P
Impeller diameter (mm)
Balancing (static/dynamic)
Material
a. Casing
b. Shaft
c. Hub
d. Impeller
Noise level
Smaller Pulley (Wherever required)
(Diameter x No. of grooves x section)
Bigger Pulley (Wherever required)
(Diameter x No. of grooves x section)
Weight (kg)
Outlet velocity MPM
Fan efficiency (%)
a) Manufacturer
b) Static pressure (mm wc)
c) Speed RPM
Motor Horse Power
Method of Starting
a)
Class of insulation
SOL – Delhi University
Page 72
APPENDIX – III
AIR-COOLED CONDENSER DETAILS:
Description
Number of circuit’s
CONDENSER COIL:
Make
Type
Face area
Air Volume
Rows deep
Fins per Inch
Tube Material / Size / Thick
Fin Material / Size / Thick
Unit
--
--m2
Cfm
Nos.
Nos.
-- / mm /
mm
-- / mm /
mm
CONDENSER FAN:
Make
Type of Fan
---
Fan Material
--
Type of Drive
No of Fan / Condenser
Impeller Diameter
Power supply
Motor Rated KW
Full Load Amps (FLA)
Motor rpm
Motor class of insulation
Motor protection
Tech .Details
-Nos.
Mm
V / Ph / Hz
KW
amps.
Rpm
---
DIMENSION AND
WEIGHT:
Casing Material
Width
Depth
Height
Weight
SOL – Delhi University
-Mm
Mm
Mm
Kg
Page 73
2.
AXIAL FAN
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
Manufacturer
Model No.
Type of fan
Overall dimension (mm)
Air quantity CFM
Static pressure (mm wc)
Speed RPM
Motor Horse Power
Method of Starting
Class of insulation
SOL – Delhi University
Page 74
FINANCIAL SECTION-I
SCHEDULE OF QUANTITIES FOR AIR CONDITIONING SYSTEM FOR SCHOOL OF OPEN
LEARNING AT DELHI UNIVERSITY, NEW DELHI
All the rates quoted by the contractor shall be complete finished work including cost of all labour, material, scaffolding,
finishing as required with tools, plants, lead, lift, taxes, tollage, octroi, royalties etc. except those specially excluded in
the description of the individual items. All works shall be executed as per drawings, specification and instructions of Site
incharge and shall include the supply and installation at site of all the equipment, ancillary materials as specified and
all such items what-so-ever which may be required to fulfill the intent and purpose as laid down in the specification
and/or the drawings. All materials shall be as per ISI specification and with IS certification marked wherever applicable.
The material shall be duly approved by Site incharge before incorporation in the actual work.
S. No.
Description
Unit
Qty.
Configuration / Module of ODU to be as per Annexure - A to this
SOQ.
1.1.1 Main Building
HP
300
1.1.2 Library & Admin Block
HP
270
1.1.3 General Store Building-2
HP
34
1.1.4 South Campus Building-1
HP
22
HP
HP
18
644
1.2.1 0.65TR
Nos.
10
1.2.2 1.05 TR
Nos.
2
1.2.3 1.33 TR
Nos.
46
1.2.4 1.65 TR
Nos.
106
Rate
(Rs.)
Amount
(Rs.)
SUB-HEAD 'A' - MACHINERY
1
1.1
VRV/VRF UNITS
Outdoor Unit
Supply, Installation, testing & commissioning of Imported Variable
refrigerant volume / flow modular type air-conditioning system
suitable to operate from 400 ± 10% volt, 50 Hz,3 phase AC power
supply for cooling/heating by using inverter driven capacity control
compressors (Hermetically sealed scroll / DC Twin rotary type)
complete with individual controller and fittings with necessary
wiring, connection & termination & M.S. frame duly painted to
locate Outdoor Unit etc. as per quantity given below including full
charging of R-410A refrigerant gas complete as per specifications.
Outdoor Unit should be all inverter compressor with minimum
C.O.P. of 4.6 at 50% load.
1.1.5 South Campus Building-2
Total
1.2
Indoor VRV Units (Nominal Capacity)
Supply, Installation, testing & commissioning of Wall Mounted
Type Unit of following Nominal capacity suitable to operate from
230+10% volt, 50 HZ, 1 phase power supply with cordless remote
control complete with fittings, required cable connect indoor unit to
socket etc. complete as required.
SOL - Delhi University
Page 75
S. No.
Description
Unit
Qty.
Nos.
140
Set
292
Nos.
6
No.
1
Nos.
10
2.3.1 4.0 KVA
No.
1
2.3.2 5.0 KVA
Nos.
10
1.2.5 2.1 TR
1.3
1.4
2
2.1
2.2
2.3
Supply,Installation,testing,and commissioning of necessary fittings,
Y-joints and headers etc.
Supplying, fixing, testing and commissioning ofMain centralized
controller Push Button Type suitable for groups of indoor units to
be installed for control.
Rate
(Rs.)
Amount
(Rs.)
SPLIT UNITS
Supplying, fixing, testing and commissioning of 1.5 TR Hi Wall type
split air-conditioning with inverter type cooling techonology, unit
suitable to operate from 230±10% volt, 50 Hz, 1 phase power
supply, with air-cooled evaporator with coil, fan, and fan motor, aircooled condenser with hermetically sealed rotery / scroll
compressor condenser coil, propeller fans controls, control panel,
Including control wiring, necessary power cable, M.S. frame duly
painted to locate Outdoor Unit etc. The Refrigerant pipe size and
gas quantity should suit to the copper pipe lengthas per actual
requirement.
Supplying, fixing, testing and commissioning of 2.0 TR Hi Wall type
split air-conditioning with inverter type cooling techonology, unit
suitable to operate from 230±10% volt, 50 Hz, 1 phase power
supply, with air-cooled evaporator with coil, fan, and fan motor, aircooled condenser with hermetically sealed rotery / scroll
compressor condenser coil, propeller fans controls, control panel,
Including control wiring, necessary power cable, M.S. frame duly
painted to locate Outdoor Unit etc. The Refrigerant pipe size and
gas quantity should suit to the copper pipe length per actual
requirement.
VOLTAGE STABLIZER
Providing, fixing,Installation, testing & commissioning of automatic
voltage stabilizer with inbuilt time delay relley suitable to operate on
230+/-10% Volt, 50 Hz, three phase power supply with digital
display of voltage & Ampere for input & output power complete as
required.(Fixing of Plug tops are in scope of Contractor)
SOL - Delhi University
Page 76
S. No.
Description
3
Refrigerant Piping
Supply & Installation of interconnecting following sizes of one end
expanded refrigerant copper pipe work of following outer diameter,
insulated with 19/13 mm thick closed cell electrometric EPDM/nitrile
rubber tubular insulation between each set of indoor & outdoor units
with outer mechanical protection of alluminum cladding for all
exposed pipes as per specification. All piping inside the room shall
be propelrly fixed/supported with suitable size of clamp/ M.S.
hanger and all external piping shall run in M.S. painted cable
tray(Price Extra) etc. as reqd.
Unit
Qty.
3.1
41.3 mm dia with 19mm thick EPDM/nitrile rubber insulation
Mtrs.
305
3.2
38.0 mm dia with 19mm thick EPDM/nitrile rubber insulation
Mtrs.
R.O
3.3
34.9 mm dia with 19mm thick EPDM/nitrile rubber insulation
Mtrs.
85
3.4
28.6 mm dia with 19mm thick EPDM/nitrile rubber insulation
Mtrs.
450
3.5
22.2 mm dia with 19mm thick EPDM/nitrile rubber insulation
Mtrs.
110
3.6
19.1 mm dia with 13mm thick EPDM/nitrile rubber insulation
Mtrs.
500
3.7
15.9 mm dia with 13mm thick EPDM/nitrile rubber insulation
Mtrs.
1190
3.8
12.7 mm dia with 13mm thick EPDM/ nitrile rubber insulation
Mtrs.
750
3.9
9.5 mm dia with 13mm thick EPDM/nitrile rubber insulation
Mtrs.
1200
3.10
4
490
4.1
6.4 mm dia with 13mm thick EPDM/nitrile rubber insulation
Mtrs.
Drain Piping
Providing & fixing of rigid PVC Pipe complete with fittings, supports
as per specifications and duly insulated with 6mm thickness of
closed cell nitrile rubber as per direction of Engineer-in-charge &
specifications enclosed as reqd.
50 mm dia
Mtrs.
4.2
40 mm dia
Mtrs.
215
4.3
32 mm dia
Mtrs.
245
4.4
25 mm dia
Mtrs.
825
4.5
20 mm dia
Mtrs.
1060
Rate
(Rs.)
Amount
(Rs.)
130
TOTAL
SOL - Delhi University
Page 77
S. No.
Description
Unit
Qty.
No.
1
Sqm
10
Rate
(Rs.)
Amount
(Rs.)
SUB-HEAD 'B' - VENTILATION
1
1.1
2
Pressurization Air Axial Fan unit
Supplying, installation, testing and commissioning of Floor
Mounted Axial flow fan suitable for outdoor application of
following capacity with GSS casing and aluminium alloy impellers
with high efficiency aero-foil sections, blades, the impeller directly
driven by TEFC induction motor, Class-F, motor should be of high
efficiency (Eff-1) suitable for 3 Phase 50 Hz 415 V ± 10 %, 1400
RPM complete as required and as per specifications (20 mm Static
Pressure WC) (For Pressurization of lift well in case of fire).
Suitable TP isolator within MS enclosure should be Provided.
3500 CFM (Liftwell)
Supply, installation, testing and commissioning of Powder coated
MS louvers with bird screen , frame etc. for fresh air intake as
per specifications and approved drawings.
TOTAL
All the machines indoor / outdoor should be imported.
The C.O.P. of the outdoor should be not less than 4.6 at 50% load
The compressure should be inverter only. No digital compressure will be allowed.
Only Y-joint will be used for branching and indoor connections.
SOL - Delhi University
Page 78
S. No.
Description
Unit
Qty.
Set
1
Rate
(Rs.)
Amount
(Rs.)
SUB HEAD 'C' - ELECTRICAL WORKS
1
VRV OUTDOOR UNIT PANEL (ADMIN. BLOCK)
Supplying, assembling, erecting, connecting, testing and
commissioning of dust, damp and vermin proof free floor standing
factory built sheet steel enclosed non-drawout modular type VRV
Panel fabricated out of 2.0 mm thick CRCA sheet hinged doors of
1.6mm thick CRCA sheet, duly painted complete with earth bus,
aluminium bus bar, numbering & sign writing, interconnection &
including the cost of connection through bus bar / copper conductor
flexible connection with necessary interlocking with existing panel
as shown in drawing as per specification and mounted with the
followings.
Incoming:
250Amp FP, 35 kA MCCB - 1No.
3 Nos. Phase indication LED lamps with 2 Amps back up MCB,
breaker ' ON/OFF' indicating light with 2A MCB
1 No. Intelligent multi-function digital panel meters of class 0.5
accuracy with communication interface port R 485 for recording V
(Between Phases and between each phase and neutral, A (In each
phase and neutral), KWHr with suitable rating CTs, CT shorting
links, R,Y, B LED indicating lamp and 2 A control SP MCB's.
Bus Bar
300 Amp. 35 kA, FP Al. Bus Bar
Outgoings:
125Amp 4P, MCCB - 3 Nos.
100Amp 4P, MCCB - 2 No.
2
VRV OUTDOOR UNIT PANEL (LIB. BLOCK)
Supplying, assembling, erecting, connecting, testing and
commissioning of dust, damp and vermin proof free floor standing
factory built sheet steel enclosed non-drawout modular type VRV
Panel fabricated out of 2.0 mm thick CRCA sheet hinged doors of
1.6mm thick CRCA sheet, duly painted complete with earth bus,
aluminium bus bar, numbering & sign writing, interconnection &
including the cost of connection through bus bar / copper conductor
flexible connection with necessary interlocking with existing panel
as shown in drawing as per specification and mounted with the
followings.
Incoming:
400Amp FP, 35 kA MCCB - 1No.
3 Nos. Phase indication LED lamps with 2 Amps back up MCB,
breaker ' ON/OFF' indicating light with 2A MCB
SOL - Delhi University
Page 79
S. No.
Description
Unit
Qty.
Set
1
Set
1
Set
1
Rate
(Rs.)
Amount
(Rs.)
1 No. Intelligent multi-function digital panel meters of class 0.5
accuracy with communication interface port R 485 for recording V
(Between Phases and between each phase and neutral, A (In each
phase and neutral), KWHr with suitable rating CTs, CT shorting
links, R,Y, B LED indicating lamp and 2 A control SP MCB's.
Bus Bar
500 Amp. 35 kA, FP Al. Bus Bar
Outgoings:
125Amp 4P, 35 kA, MCCB - 3 Nos.
100Amp 4P, 35 kA, MCCB - 2 No.
32Amp , TP, MCB - 1No.
3
VRV OUTDOOR UNIT PANEL (MAIN BUILDING)
Supplying, assembling, erecting, connecting, testing and
commissioning of dust, damp and vermin proof free floor standing
factory built sheet steel enclosed non-drawout modular type VRV
Panel fabricated out of 2.0 mm thick CRCA sheet hinged doors of
1.6mm thick CRCA sheet, duly painted complete with earth bus,
aluminium bus bar, numbering & sign writing, interconnection &
including the cost of connection through bus bar / copper conductor
flexible connection with necessary interlocking with existing panel
as shown in drawing as per specification and mounted with the
followings.
Incoming:
630Amp FP, 35 kA MCCB - 1No.
3 Nos. Phase indication LED lamps with 2 Amps back up MCB,
breaker ' ON/OFF' indicating light with 2A MCB
1 No. Intelligent multi-function digital panel meters of class 0.5
accuracy with communication interface port R 485 for recording V
(Between Phases and between each phase and neutral, A (In each
phase and neutral), KWHr with suitable rating CTs, CT shorting
links, R,Y, B LED indicating lamp and 2 A control SP MCB's.
Bus Bar
800 Amp.35 kA, FP Al. Bus Bar
Outgoings:
125Amp 35 kA 4P, MCCB - 9 Nos.
4
4.1
ISOLATOR PANEL BOXES
Suppplying, assembling, erecting, testing and commissioning of
wall/ floor mounted Isolator box with IP-55 encloser and required
rating of 100 AMP, 4P MCCB, having proper arrengement for
incoming & outgoing cable termination.(For General Store)
SOL - Delhi University
Page 80
S. No.
Description
Unit
Qty.
4.2
Suppplying, assembling, erecting, testing and commissioning of
wall/ floor mounted Isolator box with IP-55 encloser and required
rating of 100 AMP, 4P MCCB, having proper arrengement for
incoming & outgoing cable termination.(For South Campus,
Buidling 1 & 3)
Sets
2
5.1
Supply, laying testing and commissioning of following sizes of XLPE
insulated PVC sheathed armoured aluminium conductor cable of
1.1 KV grade on existing cable tray / surface including clamps, ties
etc. as required.
4 Core 25 Sqmm.
Mtrs.
100
5.2
3.5 Core 35 Sqmm.
Mtrs.
325
5
6
4 Core 25 Sqmm.
Set
8
6.2
3.5 Core 35 Sqmm.
Set
26
Mtrs.
50
Set
6
Providing and fixing 6 SWG dia. GI wire on surface or in recess for
loop earthing along with the existing surface / recessed conduits /
submain wiring / cable as required.
Mtrs.
150
Providing and fixing 25 x 5 mm G.I. Strip on surface or in recess for
connections etc. as required.
Mtrs.
50
Mtrs.
20
7.1
8
9
10
11
Amount
(Rs.)
Supplying and making end termination with brass compression
glands and Al. lugs for following size of PVC insulated and PVC
sheathed / XLPE Al. conductor cable of 1.1 KV grade as required.
6.1
7
Rate
(Rs.)
Supplying and installing following size of perforated pre-painted
M.S. cable trays with perforation not more than 17.5%, in
convenient sections, joined with connectors, suspended from the
ceiling with M.S. suspenders including bolts & nuts, painting
suspenders etc as required
300 mm. Width x 50mm. Depth x 1.6mm. Thickness.
Earthing with GI earth plate 600 mm x 600 mm x 6 mm thick
including accessories, and providing masonary enclosure with
cover plate having locking arrangement and watering pipe of 2.7
metre long etc. with charcoal / coke and salt as required.
Providing and fixing 25 x 5 mm G.I. Strip in 40 mm dia. G.I. pipe
from earth electrode including connection with G.I. nut, bolt, spring,
washer excavation and re-filling etc. as required.
TOTAL
SOL - Delhi University
Page 81
S. No.
Description
Unit
Qty.
Job
1
Job
1
Job
1
Job
1
Job
1
Job
1
Rate
(Rs.)
Amount
(Rs.)
SUB HEAD 'D' - OPERATION AND MAINTENANCE
1
2
3
4
5
6
Providing all labour and material for smooth yearly operation (from
8:30 AM to 6 PM) of the complete HVAC and associated electrical
installation system (As detailed in section A to C of the tender) on
all working days throughout the year, during the defect liability
period / guarantee period of first year after taking over of the plant.
(Cost to be quoted for complete one year)
Providing all labour and material for smooth yearly operation (from
8:30 AM to 6 PM) of the complete HVAC and associated electrical
installation system (As detailed in section A to C of the tender) on
all working day throughout the year and maintenance including all
comsumable after defect liability / Guarantee period after first year
of taking over of the plant.
Providing all labour and material for smooth yearly operation (from
8:30 AM to 6 PM) of the complete HVAC and associated electrical
installation system (As detailed in section A to C of the tender) on
all working day throughout the year and maintenance including all
comsumable after defect liability / Guarantee period after second
year of taking over of the plant.
Providing all labour and material for smooth yearly operation (from
8:30 AM to 6 PM) of the complete HVAC and associated electrical
installation system (As detailed in section A to C of the tender) on
all working day throughout the year and maintenance including all
comsumable after defect liability / Guarantee period after third year
of taking over of the plant.
Providing all labour and material for smooth yearly operation (from
8:30 AM to 6 PM) of the complete HVAC and associated electrical
installation system (As detailed in section A to C of the tender) on
all working day throughout the year and maintenance including all
comsumable after defect liability / Guarantee period after fourth
year of taking over of the plant.
Providing all labour and material for smooth yearly operation (from
8:30 AM to 6 PM) of the complete HVAC and associated electrical
installation system (As detailed in section A to C of the tender) on
all working day throughout the year and maintenance including all
comsumable after defect liability / Guarantee period after fifth year
of taking over of the plant.
TOTAL
SOL - Delhi University
Page 82
S. No.
Description
Unit
Qty.
Rate
(Rs.)
Amount
(Rs.)
Rate
(Rs.)
Amount
(Rs.)
Annexure - A
Detail of ODU required for each individual building
S. No.
Description
Unit
Qty.
1
DETAILS OF VRV/VRF OUTDOOR UNITS FOR VARIOUS
BUILDINGS
Configuration / Module of ODU shall be as indicated below for
various buildings.
Outdoor Unit
1.1.1 Main Building
(Equipment Required are 48 H.P.- 2Nos., 42 H.P.- 2Nos., 40 HP - 3
Nos.) Total HP-300
1.1.2 Library & Admin Block
(Equipment Required are 52 H.P.- 2Nos., 44 H.P.- 3Nos., 34 HP - 1
No.) Total HP-270
HP
300
HP
270
1.1.3 General Store Building-2
(Equipment Required are 34 H.P.- 1 No)
Total HP-34
HP
34
1.1.4 South Campus Building-1
(Equipment Required are 22 H.P.- 1 No)
Total HP-22
HP
22
1.1.5 South Campus Building-2
(Equipment Required are 18 H.P.- 1 No)
Total HP-18
HP
18
1.1
SOL - Delhi University
Page 83
SUMMARY FOR AIR-CONDITIONING WORK FOR SCHOOL OF OPEN LEARNING AT
DELHI UNIVERSITY, NEW DELHI
S. No.
DESCRIPTION
1
SUB-HEAD 'A' - MACHINERY
2
SUB-HEAD 'B' - VENTILATION
3
SUB HEAD 'C' - ELECTRICAL WORKS
4
SUB HEAD 'D' - OPERATION AND MAINTENANCE
AMOUNT
(Rs.)
TOTAL
SOL - Delhi University
Page 84
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