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7/29/2019 01 Specifications of Fans_Axial & Propeller - For Merge
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Page 1 of 10
SPECIFICATION NO: 10070-40-PPR-PR-ER-507
TITLE: SPECIFICATION FOR AXIAL/PROPELLER FLOW FANS
PROJECT REFERENCE:
Project No: 44PS48XX
Project Location: MUMBAI, MAHARASHTRA
Project Title: AG3 - Centre
Client: INFOTEL BROADBAND SERVICES LTD
(WHERE APPLICABLE)
Project Manager Authorisation: N/A Date: -
Client Authorisation: N/A Date: -
APPROVALS
Rev.No.
IssueDate
Revision Description By Check Approve
A Issued for Enquiry MD AKV RB/ARe
EntireSpecification
SPECIFICATION ISSUED FOR:
Issued thisRevision
In-house Review Purchase
Revised PagesOnly
Client Approval Construction
Issued thisRevision
Enquiry
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PROJECT NO. 44PS48XX
TITLE: SPECIFICATION FOR PRECISION AIR
CONDITIONER
SPECIFICATION NO.:10070-40-PPR-PR-ER-507
REV.NO./ISSUE DATE: A /
PAGE 2 OF 10
TABLE OF CONTENTS
1.0 PURPOSE ........................................................................................................................................... ........ .......4
2.0 SCOPE .................................................................................................................................................................4
3.0 COST COMPETITIVE ENGINEERING AND DESIGN ............................................................................. .4
4.0 REFERENCE CODE / STANDARD ...............................................................................................................4
5.0 TERMS AND DEFINITIONS ...........................................................................................................................5
6.0 ABBREVIATIONS ............................................................................................................................................5
7.0 TECHNICAL REQUIREMENTS ....................................................................................................................5
PROPELLER FAN ...................................................................................................................................................5
THE PROPELLER FAN BLADES SHALL BE PRESSED STEEL OF AEROFOIL DESIGN FOR HIGH
FAN EFFICIENCY AND STATIC PRESSURE. THE BLADES SHALL BE RIVETED TO A CENTRAL
STEEL HUB. THE MOTOR AND BLADES ASSEMBLY SHALL BE MOUNTED IN A CAST IRON /SHEET STEEL FRAME WITH STEEL BRACKETS. RUBBER MOUNTS SHALL BE PROVIDED
BETWEEN THE MOUNTING FRAMES AND BRACKETS. THE FAN MOTOR SHALL BE TOTALLY
ENCLOSED TYPE................................................................................................................................................... 5
A TERMINAL BOX ON STARTER PANEL SUITABLE FOR CONNECTING EXTERNAL 3 PHASE, 4
WIRE CABLE SHALL BE PROVIDED................................................................................................................7
THE UNIT SHALL BE PROVIDED WITH SINGLE PHASE PREVENTERS FOR ALL MOTORS........7
STARTER PANEL SHALL BE PROVIDED SEPARATELY FOR EACH UNIT..........................................7
THE STARTER PANELS SHALL BE COMPLETE WITH STARTERS FOR ALL MOTORS.................7
8.0 TEST / INSPECTION ........................................................................................................................................9
9.0 DOCUMENTATION .........................................................................................................................................9
10.0 ATTACHMENTS ............................................................................................................................................10
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PROJECT NO. 44PS48XX
TITLE: SPECIFICATION FOR PRECISION AIR
CONDITIONER
SPECIFICATION NO.:10070-40-PPR-PR-ER-507
REV.NO./ISSUE DATE: A /
PAGE 3 OF 10
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PROJECT NO. 44PS48XX
TITLE: SPECIFICATION FOR PRECISION AIR
CONDITIONER
SPECIFICATION NO.:10070-40-PPR-PR-ER-507
REV.NO./ISSUE DATE: A /
PAGE 4 OF 10
1.0 PURPOSE
This specification defines the minimum requirements for the design, material selection,
manufacturing, inspection, testing, delivery, installation and painting and performance testing
of Axial / Propeller Flow Fans.
2.0 SCOPE
2.1 The Seller’s scope of supply shall include and not be limited to all the items/facilities required
for Axial flow fans designed to meet the requirements specified in the data sheets and this
specification.
2.2 The scope of supply and services shall include design, engineering, manufacture with
materials, assembly, testing, supply, delivery, packing, transportation to site, inspection,
testing, erection and commissioning, performance guarantee and handing over of the
complete Axial flow fans including all mechanical, electrical, instrumentation works and
piping excluding civil design, complete in all respects.
3.0 COST COMPETITIVE ENGINEERING AND DESIGN
The equipment / system selection should be done based on life cycle cost. This should be
done without compromising any specification and design requirements.
4.0 REFERENCE CODE / STANDARD
The latest edition of the following codes and standards shall be complied:
ASHRAE 52-76 Methods of testing air cleaning devices used in general
ventilation for removing particulate matter
IS 3103 – 1975 Code of practice for Industrial Ventilation.
(Reaffirmed 1999)
BS-848 Methods of performance test for fans
ARI 410 Forced circulation air cooling and air heating coils
IS 659 Safety Code for air conditioning
BS-2831 Methods of test for air filters used in air conditioning and general
ventilation.
IS-3588 Specification for electrical axial flow fans.
IS-2312 Propeller type A/C ventilating fansDesign, Testing IS 2312, IS: 3577, AMCA 203, AMCA 210, AMCA 300
And Inspection
4.1 Order of Precedence
Any conflict between any requirements specified in this document and the requirements of
any other relevant referenced document shall be resolved in the following order of
preference:
• Statutory Regulations.
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PROJECT NO. 44PS48XX
TITLE: SPECIFICATION FOR PRECISION AIR
CONDITIONER
SPECIFICATION NO.:10070-40-PPR-PR-ER-507
REV.NO./ISSUE DATE: A /
PAGE 5 OF 10
• Data sheet.
• Technical Requisition.
• Job/Project Specification.
• This Specification.
• Other referenced specifications.
• Referred codes and standards.
5.0 TERMS AND DEFINITIONS
Seller: It means the material & services seller Buyer: It means the engineering consultant or the owner
Axial flow fans: these Axial flow fans are designed to run continually / partially as required for
ventilation systems. Axial flow fans systems are designed for Ventilation of Electrical Room or
some other areas.
6.0 ABBREVIATIONS
BMS: Building Management System
QAP: Quality Assurance Plan
ISO: International Organisation for Standardization
HSE: Health Safety and Environment
MPCB: Motor Protective Circuit Breaker RTU: Remote Terminal Unit
7.0 TECHNICAL REQUIREMENTS
7.1 General
Propeller Fan
The Propeller Fan blades shall be pressed steel of aerofoil design for high fan efficiency and
static pressure. The blades shall be riveted to a central steel hub. The motor and blades
assembly shall be mounted in a cast iron / sheet steel frame with steel brackets. Rubber
mounts shall be provided between the mounting frames and brackets. The fan motor shall be
totally enclosed type.
Axial Fan:-
The Axial flow fans exhaust air blower shall be Tube Axial Flow fans connected to the duct &
shall be of floor / ceiling / wall mounted type as specified in the data sheet.
The system shall contain following components:
• Casing
• Impeller • Drive Motor
• Noise and Vibration
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PROJECT NO. 44PS48XX
TITLE: SPECIFICATION FOR PRECISION AIR
CONDITIONER
SPECIFICATION NO.:10070-40-PPR-PR-ER-507
REV.NO./ISSUE DATE: A /
PAGE 6 OF 10
7.2 Casing
The cylindrical casing should be made from welded carbon steel sheet. The inlet & outlet of the casing shall be fitted with flanges for ductwork connection & other accessories asrequired. The surface f inish shall be epoxy coated.
7.3 Impeller
The impeller shall have blades of an airfoil design. Blades shall be mounted on streamlined
hub. The impeller shall be statically and dynamically balanced. Adjustable pitch blades shall
be provided if specified in data sheet.
The blade of axial flow fan shall be made of die cast aluminium alloy. The blade angle shall
be set at manufacturing place & shall also have facility to modify latter.
The impeller assembly shall be fixed on the shaft by means of a double cone type expansionbush. The design shall facilitate the alteration of blade angle without disconnecting the hub
from the motor shaft.
7.4 Drive Motor
The fan shall be directly driven by TEFC sq. cage induction motor. The fan motors shall be
energy efficient (EFF-1) 415±10% volts 50HZ ± 5%, 3 phase TEFC SQ.Cage induction
motor. The motor shall be specially designed for quiet operation & motor RPM shall be as
given in data sheet.
Drive motor shall be rated at least 15 % higher than the power requirement at duty point or
10 % higher than the maximum power requirement at selected speed, whichever is higher.
Starting torque requirements of fan shall also be considered while selecting the motor.
7.5 Nose & Vibration
The compressor shall be of high efficiency Scroll design, equivalent with an EER of not less
Noise level produced by any rotating equipment individually or collectively shall not exceed
85 dB(A) measured at a distance of 1.5 metres from the source in any direction. The overall
vibration level shall be as per zones A and B of ISO 10816-1. Balance quality requirement
shall be G 6.3 conforming to ISO 1940/1.
7.6 BMS Controls
The Axial fans panel shall have provisions to be integrated with the BMS system so that
remote operations can be performed on fans. Axial fans shall be controlled and monitoredthrough BMS. The unit shall be capable of communicating through MODBUS RTU to an RS-
485 communications port to link all the units for monitoring and control purposes. Necessary
hardware and software for the same shall be included in the unit by supplier.
7.7 Switch Board
Switchboard shall be situated in a compartment separated from the air flow and made in
compliance with the directive 73/23/EEC and related standards. The features like low-
voltage secondary circuit with isolation transformer, plastic insulating screen for protection
from live components, general isolator with mechanical interlock, thermo magnetic circuit-
breakers for protection, terminal board for no-voltage signal and control contacts shall be
provided. All the units must undergo a safety test cycle to check the continuity of theprotection circuit and the insulation resistance, and a voltage (dielectric strength) test.
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PROJECT NO. 44PS48XX
TITLE: SPECIFICATION FOR PRECISION AIR
CONDITIONER
SPECIFICATION NO.:10070-40-PPR-PR-ER-507
REV.NO./ISSUE DATE: A /
PAGE 7 OF 10
7.8 Electricity
A terminal box on starter panel suitable for connecting external 3 phase, 4 wire cable shall be
provided.
• The unit shall be provided with single phase preventers for all motors.
• Starter panel shall be provided separately for each unit.
• The starter panels shall be complete with starters for all motors.
7.9 Service Area
The unit shall be serviceable with a service space front of the unit. Rear access shall be
required for servicing. Vendor to furnish the service space along with offer.
7.10 Control System (Microprocessor)
The microprocessor controller shall be capable to manage the unit operations autonomously.
Units shall be designed and developed to interact with all the most widely used Building
Management Systems, exchanging data via the most common communication protocols
through serial connections. Vendor shall give details of the settings for the same.
The user terminal shall be with a backlit LCD display and keys to move between and change
parameters. It can be situated on board the machine or, on request, with a kit for wall
mounting for the remote control of the unit. By means of the user terminal, user can set the
air-conditioner's operating parameters, monitor the trend of the main working parameters and
read any alarm messages.
7.10.1 Following minimum information shall be available on the display on the units:
• Modes of operation
• Status of the control devices.
7.10.2 Alarm
• Visual system alarm indication (along with mutable audio alarm as well).
• Alarm display menu for all the alarms (incorporating various system alarms like
temperature high / low, humidity high / low, clogged filters, etc).
• The unit should show the settings & operating parameters of the other units
• Programmable services interval indication display / alarm.
• Displays the units are switched off by supervision system, through timer, by inversion
cycle, switched off by fire/smoke, switched off by flooding.
7.10.3 Safety Protections
The unit shall also incorporate the following protections:
• Single phasing preventers.
• Reverse phasing
• Overload tripping (MPCB) of all components
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PROJECT NO. 44PS48XX
TITLE: SPECIFICATION FOR PRECISION AIR
CONDITIONER
SPECIFICATION NO.:10070-40-PPR-PR-ER-507
REV.NO./ISSUE DATE: A /
PAGE 8 OF 10
7.10.4 Safety Interlock
Operation of heaters & humidifiers (if provided) shall be possible only when blower fan is in
operation.
7.10.5 Microprocessor Controls
Following information shall be available on the display on the units:
• Axial run status
• Air temperature
•
7.10.6 The Microprocessor shall be able to perform following functions:
• Testing of the working of display system.
• Password for unit calibration values modification
• Automatic reset of program
• Cooling capacity control
• Date & time of last intervened alarm
• Wrong password alarm
• Start / Stop status storage
• DSA start / stop command
• DSA Inv Speed display / filter diff pressure status
7.10.7 Sequencing
The unit’s microprocessor should have sequencing as an inbuilt feature. The units shall be
designed to work for equal number of run hours also incase of fault the stand by unit should
start with out any human intervention. The units should have programmer which enables the
user to feed his operating hours, non operating hours in advance up to one year during any
time. Motorised air damper shall be provided by vendor as a part of unit and its operation
shall be interlocked with DSA- fan operation. Motorised air damper shall have no leakages.
7.10.8 The microprocessor control system shall be supplied with the cards/ hard wares for following
purposes:
• RS485 serial adapter/ any other compatible and approved by client - for data transfer
to a central supervisor system with MODBUS RTU protocol;
• Water leak detector comprising a control module installed on the electric switchboard
and an external sensor.
Axial fan Vendor shall do Daisy chaining between all fans units. Fan vendor to do sequencing
of multiple units by providing master controller. Control such as Auto restart after power
resumption shall be inbuilt within the each unit. Unit shall be capable of tripping and
simultaneously closing motorized damper upon providing digital input signal fire zone wise.
Unit base frame/ stand, flexible fire proof connection, guard for moving parts shall be
provided.
7.11 Deviation by Vendor
Vendor shall strictly adhere to the scope of supply. However deviations if any shall be
specifically and separately listed in the offer. In absence of this deviation list shall be
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PROJECT NO. 44PS48XX
TITLE: SPECIFICATION FOR PRECISION AIR
CONDITIONER
SPECIFICATION NO.:10070-40-PPR-PR-ER-507
REV.NO./ISSUE DATE: A /
PAGE 9 OF 10
presumed that the vendor’s offer is in full conformity with Buyer’s requirement and there is no
deviation.
7.12 General
7.12.1 Vendor shall guarantee the Fans smooth optimum operation for 3 years after handover. Any
failure in guarantee period shall be attended by Vendor within 24 hours. Vendor shall provide
matrix of resolution time for various breakdowns along with offer.
7.12.2 Spares, consumables, any other material/ labor and any special tools and tackles required for
rectification of Fans for satisfactory operation during guarantee period shall be in vendor's
scope.
7.12.3 Vendor shall provide list of spares along with price to be maintained by client after the
guarantee period is over.
7.12.4 This specification is a general guideline. However, vendor shall have the full responsibility to
provide suitable instrument for measurement and control of the parameters for an optimum
continuous operation. Any abnormal condition in the unit shall be indicated by an audible and
visible means and the unit shall be brought to safety position automatically. Any kind of work/
supply/service necessary for completing optimum performance and functional requirement of
FAN shall be provided by vendor as per client’s requirement. Vendor shall provide all
measuring and controlling instruments and panel at local location as required for proper start-
up, normal operation and planned / emergency shut down of his package. Vendor shall
provide all instruments / controls for all the parameters and I/Os mentioned in this
specification.
8.0 TEST / INSPECTION
8.1 Inspection and testing shall be as per vendor’s standard QAP as commented and approved
Client.
8.1 Factory Performance Test
Unit manufacturer shall provide a client- witnessed single point performance test per the
latest version of applicable code.
Performance test at site will consist of an uninterrupted running of the system for min 72
hours at design conditions. Any refrigerant loss or loss in compressor oil / any consumable
shall be made good by supplier at his own cost All measuring instrument and anyrequirements shall be arranged by Vendor.
9.0 DOCUMENTATION
9.1 Following documents shall be submitted along with the bid:
• Filled in data sheets as per format given with Material Requisition
• General arrangements drawing showing approximate area.
• Electrical wiring diagram.
• Any non-compliance with material requisition and attached specifications
• Quality assurance / ISO related documents
• Fan performance curves showing duty point.• HSE policy documents
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PROJECT NO. 44PS48XX
TITLE: SPECIFICATION FOR PRECISION AIR
CONDITIONER
SPECIFICATION NO.:10070-40-PPR-PR-ER-507
REV.NO./ISSUE DATE: A /
PAGE 10 OF 10
All documents specified as per Material requisition attachments shall be submitted after
award.
Following documents shall be submitted as minimum:
G.A. drawing, Performance curves, QAP, Completed datasheets, Foundation requirement
drawing, List of special tools, Catalogues, Electrical connection / wiring diagrams, Control
logic and logic diagrams, Installation , operation and maintenance manual, Individual
characteristic curve of all components, any information and format as and when demanded.
10.0 ATTACHMENTS
Nil