DQ (DESIGN QUALIFICATION) DOCUMENT FOR AHU

DQ (DESIGN QUALIFICATION) DOCUMENT FOR AHU- 4000 CFM / 150 mm wg – SP

To prepare detailed specifications (Design data) for HVAC System and its major components, to Ensure that the User Requirement Specifications, as described in RDS are achieved.

To design the system in conjunction with the design data in order to provide basis for the Vendor & manufacturers to design and fabricate the system (equipment & component) to meet Design intent.

TABLE OF CONTENTS

• Objective
• Scope
• Responsibilities
• Equipment/System Description
• Post Construction Review (For any kind of deviation, if any) & Discussion
• Design Qualification Summary and Conclusion
• Abbreviations
• Design Qualification Protocol Post Approval 

DESIGN QUALIFICATION PRE-APPROVAL

OBJECTIVE: To prepare detailed specifications (Design data) for HVAC System and its major components, to Ensure that the User Requirement Specifications, as described in RDS are achieved.

To design the system in conjunction with the design data in order to provide basis for the Vendor & manufacturers to design and fabricate the system (equipment & component) to meet Design intent.

SCOPE: Applicable to the HVAC System, Data sheet for the subjected equipment and its major components is defined by the consultation, which is finalized and mutually discussed with the system supplier. The design qualification is a basic document for the subsequent Validation activity.

RESPOSIBILITIES: 

• Preparation of the DQ Protocol
• Collection of Date & preparation of final design
• Execution of the protocol and preparation of DQ Summary Report
• Checking the protocol for accuracy and adequacy prior to the approval
• Review and approval of the protocol
• Review and approval of the design qualification report.

EQUIPMENT / SYSTEM DESCRIPTION:

The subjected HVAC System is designed; AHU is of re circulated type and made from double skin panels filled with PUF insulation density of 40 ± 2 kg/m³ and assembled as a closed box with Aluminum profiles. Profiles are fitted with thermal barrier to avoid condensation over it. AHU is provided with a stainless-steel drain tray for collection of condensates.

AHU is sized to accommodate different sections like mixing chamber, cooling coil, fan motor assembly, First stage (EU-4) Fine filter, and Second stage (EU-5) fine filter.

All the filters are provided with specific distant from Motor Blower assembly and thus the operator is protected during maintenance. Blower assembly is provided with anti vibrator isolators to minimize the vibration to AHU.

Access doors are provided for each section and door locks are provided with gasket, to avoid leakages from the doors.

AHU is provided with manual type volume control dampers at supply air outlet, return air inlet and fresh air inlet & Bleed air outlet.

The total volume of air is supplied to the process areas with the help of supply duct, which is made up of GI sheet and the air returns to the mixing chamber through the return duct which is made up of GI sheet.

AREA COVERD BY AHU- AHU – 4000 CFM: Corridor filling view, Corridor filling entry side, Filling entry A/L-1, Entry A/L, Air lock-01.

MATERIAL, EQUIPMENT & DOCUMENTS

AHU DESCRIPTION

Overall Dimensions (L x W x H) : 2400 x 1450 x 1650 mm (100 mm GI Base extra)

Type of unit: Double skin floor mounted –Double Decker type

Frame structure: Extruded profile Aluminum anodized with thermal break

Panels : 43 + 2 mm thick PUF

Inner skin:0.6 mm thick G.I.

Outer skin:0.6 mm thick G.I. Pre coated (PPGI)

Insulation: Polyurethane, Density 40 ± 2 kg/m³

SUPPLY AIR FAN / BLOWER:

Fan Type: Plug Fan

Fan Make: Nicotra

Fan Capacity: 4000 CFM

Static Pressure: 150 MMWG

Fan Model: RLO-E1-3540

MOTOR:

Make: Bharat Bijilee

Motor Power (KW/HP) :5.5 KW / 7.5 HP

Motor Pole: 2 POLE

Type: 3 Ph /415 V / 50 Hz. Sq. Cg.

CHILLED WATER COIL:

Make: COOL TECH ENGINEERS

Type: CHW

Rows: 06

Face Velocity:500 FPM

Coil Size (L x H): 1200 mm x 700 mm x 200 mm (Flange to Flange)

Coil Tubes: ½” O.D. 22 Gauge Copper

Coil Connection: R.H.S

Header Material: MS

MAGNEHELIC GAUGES:

Make: Galaxy

Type: Analog

M.O.C.: Die cast aluminum case and bezel with acrylic cover.

Range: 0-25 mm OF WC (Across pre filter)

Range: 0-50 mm OF WC (Across fine filter)

SAFETY PROVISION: Marine Light & Limit Switch

FILTER DETAILS:

Location: At AHU

Make: Thermadyne

Type: Flange type

Filter frame M.O.C.: AL

Size: 610 x 610 x 50 mm – 02 Nos.

Efficiency: 90 % down to 10µ

Grade: EU 4

FINE FILTER: Location: At AHU

Make: Thermadyne

Type: Flange type

Filter frame M.O.C.: AL

Size: 610 x 610 x 300 mm – 02 Nos.

Efficiency: 99% down to 3µ

Grade: EU 7

FRESH AIR FILTER: Location: At AHU

Make: Thermadyne

Type: Flange type

Filter frame-M.O.C.: AL

Size: 270 x 260 x 50 mm – 01 Nos.

Efficiency: 90 % down to 10µ

Grade: EU 4

BLEED OFF FILTER

Location: At AHU

Make: Thermadyne

Type: Flange type

Filter frame- M.O.C: Aluminum

Size: 270 x 260 x 50 mm – 01 Nos.

Efficiency: 99.97% down to 0.3µ

Grade: EU-13

SUPPLY HEPA FILTERS, Location: At Terminal

Make: Mackmark

Type: GEL SEAL (Box type)

Filter frame-M.O.C.: AL

Size (Qty.): 305 x 305 x 105 mm – 01 Nos.

Size (Qty.): 450 x 450 x 105 mm – 10 Nos.

Efficiency: 99.997 % down to 0.3µ

Grade: EU 13

RETURN RISER FILTERS, Location: At Wall panel

Make: True Air

Type: Box type

Filter frame-M.O.C.: AL

Size (Qty.): 390 x 290 x 25 mm – 09 Nos.

Size (Qty.): 290 x 290 x 25 mm – 01 Nos.

Efficiency: 90 % down to 10µ

Grade: EU 4

Top Return Housing with pre filter: 450 x 450 x 50 mm – 01 nos.

VOLUME CONTROL DAMPERS:

Material of Construction: Aluminum

Type: Manual Operation

Supply Air Damper: 410 x 620 x 125 mm

Return Air Damper: 410 x 650 x 125 mm

Fresh Air Damper :210 x 200 x 125 mm

Bleed Off Air Damper: 210 x 200 x 125 mm

FIRE DAMPER WITH FUSIBLE LINK FOR RETURN: Return Air Damper (Size): 410 x 650 x 100 – mm

DUCTING: Description: Factory / Site Fabricated GI ducting as per IS Standard with RTV sealant & 3 mm thick Rubber gasket strips complete with supporting hangers, reavets, nut- bolts, threaded rod, fasteners etc. Fabrication of ducts shall be through Lock forming machines.

Zinc Coating thickness: Zinc coating of 120g/Sq.mtr on both sides.

Thickness of Galvanized sheet: 22/24 SWG.

Thermal Insulation of Ducts:

Make : AEROFOAM

Service: Thermal Insulation of Air Ducts

Density: 25±3 kg/m³

Average Temperature: 40 deg. C

Thermal Conductivity (20⁰C): 0.035W/Mk

Water Vapor Permeability: Less than 2.48 x 10^-14 kg/ms.Pa

MOC: Cross Linked Polyethylene

Thickness: Supply Air Duct – 19 mm thick, Return Air Duct – 12 mm thick, Duct Joint – 06 mm thick

Supply Air HEPA Filter Terminal Boxes: Material of Construction: Terminal mounted Gel type HEPA box With Filter in 16 G Aluminum construction epoxy painted and complete with volume control damper in 16 G Aluminum. HEPA box should complete with all accessories PAO port etc. (Duct Connection SIDE/TOP). Volume control damper to be operated from service/working area. Thickness: 16 G AL.

Electrical Panel Details:

MCB (for motor & Heater)

Overload relay

ON/OFF push button

Emergency push button

Indicator

Selector switch

RH & TEMP. Controller

RH & TEMP. Sensor

VFD 

CHW Manifold:

• Butterfly valve
• 3 Way valve
• Balancing valve
• Y Strainer screwed end
• Pressure gauge
• Temperature gauge
• Coke Vale
• Seffner pipe
• Auto air vent valve
• MS Socket
• MS Pipe
• MS Flange
• MS Bend
• Glow valve
• Hex nipple
• MS Socket

 POST CONTRUCTION REVIEW (for any kind of deviation, if any) & DISCUSSIONS

DESIGN QUALIFICATION SUMMARY AND CONCLUSION

On completion of DQ activity it is found that the manufactured system and its component do not have any deviation with design specification. The system can be taken for installation and further qualification.

DESIGN QUALIFICATION POST APPROVAL DQ COMPLETE