1) Before starting work, verify location and sizes of all ductwork and HVAC

equipment/system.
2) For foundation and other related installation details refer HVAC standard
drawings.
3) AHU's condensate outlet shall be connected to floor drain using full size "
P" trap.
4) All AHU's shall be placed on vibration isolators over a concrete pad of
height 100 mm above finish floor level.
5) Location of grills and diffusers (supply/ return) indicated in drawings are for guidance
only. Final location shall be coordinated in reflected ceiling drawing.

6) For foundation and other installation related details, refer HVAC standard drawings.

7) AHU condensate outlet shall be connected to floor drain using full size “p” trap and shall
be sized to overcome fan static pressure.
8) In addition to the central air conditioning system (HVAC) provided in the UPS, LAN
DP and Engineering room of the building an independent split type air conditioning
unit shall also be provided in these rooms to maintain the required temperature, in
the event of failure of central air conditioning system.
EF-1 WORKING
Exhaust Air/Gravity Shutter
type louver 36X20" 2957 CFM 2957 CFM 9) All AHU's shall include following sections.
1575 CFM WORKING STANDBY
EF-3/A EF-3/B
1) Fan section with standby motor & Pulley ready for manual changeover.
2)Two cooling coil each size for 100% capacity.

10"X8"
10"X8"
3)Inspection section.

10"X8"
4)Bag filters section.

EAD 18"X14"
14"X12" 12"X10"
IDU-03 5)Panel filters section.
6)Mixing filter section.

EAD 14"X10"
24"X8"
10"X8"
VCD29
VCD30 VCD31 VCD33
10) All supply and return air ducts running inside the HVAC room will be internally lined
26"X12" 24"X10" 18"X6" with 1" thick acoustic duck lining, for a maximum distance of 3M from the AHU'S discharge
and suction sections respectively.

34"X14"
24"X8"
24"X8"

24"X8"

24"X8"

24"X8"

24"X8"
IDU-04 VCD28 VCD32

10"X8"
VCD17 BDD
VCD23 VCD21 VCD19
11) Insulation is to be applied with a fire resistant adhesive for sealing insulation joints use

14"X8"
VCD25

24"X8"
VCD26 FD-6
4" wide adhesive vapor proffer tape.
32"X10" 36X16" 46"X16" 50"X18" SAD 58"X20" 62"X20" 12) All ducts running thru the switchgear room & exposed to view shall be wrapped with an
8 OZ .canvas jacket pasted in place with Benjamin foster adhesive.
VCD27 VCD24

SAD 38"X14"
VCD22 VCD20 VCD18

24"X8"
24"X8"

24"X8"

24"X8"

24"X8"
13) U-trap shall be provided in suction line near to AHU's. (for all refrigerant circuits)

62"X20"
24"X8" VCD15
DUCT HEATER 3.0KW
DUCT HEATER 6.0KW
FD-4 14) Condensate line shall include P-trap for each AHU's.
FD-5
S.A.D 18"X18"- 8 NOS S.A.D 18"X18"- 4NOS VCD16
VCD14 VCD35
15) Duct access door will be provided for inspection & Maintenance
CFM 955 EACH ( TOTAL CFM 7640) CFM 1009 EACH ( TOTAL CFM 4036) SAD 62"X20" PLENUM BOX SAD 36"X14" 36"X14"
R.A.G 20"X18" 6 NOS R.A.G 20"X18" 4 NOS 36"X12"
16) Motorized fire dampers/Fire dampers shall be installed on all fire rated wall
80"X68"X48"
penetration.

12"X6"
T VCD13
VCD7 17) All dimensions are in "mm" and levels are meters.
MFD-2 FD

24"X10" 30"X10" 32"X12" SAD 50"X16" SAD 54"X20" 52"X20" 18) All HVAC Duct and air devices dimensions are in inches and B.O.D in millimeters.
18"X8" 36"X14" 42"X16" 50"X20" 48"X18" 44"X18"

68"X22"
PRD 19) All room type split units shall be connected to both normal and emergency (Generator)
MFD-6
power supply.
VCD6 VCD5

THERMOSTAT
UP B.O.T 1500
COWL WITH FROM FFL INSULATION DETAILS
S.NO. ITEM
BIRD WIREMESH THICK Inch (mm) DENSITY KG/M 3(LB/FT3)

SAD 68"X26"
3-WAY S.A.D 12"X12"- 6NOS
3-WAY S.A.D 15"X15"- 12NOS CFM 388 EACH ( TOTAL CFM 2328) 1 DUCT EXPOSED TO OUTSIDE 2" (50 mm) 24 (1.5)

42"X18"
CFM 620 EACH ( TOTAL CFM 7440) 3-WAY R.A.D 12"X12"- 6NOS 2 DUCT IN CONDITIONED AREA / RETURN AIR PASSAGE 1" (25 mm) 24 (1.5)
3-WAY R.A.D 15"X15"- 12NOS

14,201 CFM
REFRIGERANT PIPE (SUCTION LINE)

SAD 68"X22"

RAD 60"22"
3 2" (50 mm) 96 (6.0)

4 ACOUSTIC LINING 1" (25 mm) 24 (1.5)

THERMOSTAT 5 DUCT INSIDE AHU/MACHINE ROOM 2" (50 mm) 24 (1.5)

18,733 CFM
B.O.T 1500 DUCT ABOVE FALSE CEILING OR IN ATTIC SPACE
6 24 (1.5)
VCD3
FROM FFL WHERE NO RETURN AIR PASSAGE IS EXPECT
2" (50 mm)
MFD-7
VCD4
DOWN 7 DUCT IN UNCONDITIONAL AREA 2" (50 mm) 24 (1.5)

RAD 44"X16" RAD 50"X18" 48"X18" 44"X18" 42"X16"

40"X14" 44"X14" 40"X16" 38"X14"
28"X10" 34"X12"
18"X6" 22"X10"
VCD8
T

SAD 72"X26"
RCP-1 RCP-2

15,584 CFM

21,084 CFM
MFD-5
MFD-4 MFD-3 FD-2 FD-1
MFD-1
B ISSUED FOR APPROVAL ZA 11.07.2019
VCD1 28"X12"

42"X18"
12,695 CFM
A ISSUED FOR REVIEW & APPROVAL ZA 15.06.2019
VCD9 VCD10

64"X22"
HVAC DB-2
SAD PLENUM BOX REV DRAWN CHECKED CHECKED APPROVED
AMENDMENTS (SAHARA) (LTHE) (AI-O&G) (KOC) DATE
52"x28"X96"
24"X8" 24"X8"
52"x28"X96" SAD PLENUM BOX 60"x30"X104" VCD2 CONTRACTOR REVISION
60"x30"X96"
AHU-01 IDU-05/B
VCD34

28"X14"
21,084 CFM KOC APPROVALS
28"X10"

RAD 64"X24"
AHU-02

15,555 CFM
HVAC DB-1

15,584 CFM DESIGNATION - GROUP / TEAM NAME SIGNATURE DATE

FD-3

RAD PLENUM BOX

22"X14"
VCD11 VCD12
52"x28"X168"

RAD PLENUM BOX

52"x24"X168" 24"X8" 24"X8"
VCD
VCD IDU-05/A

42"X20"
24"X20"

VCD-2 M
MVCD-1
FRESH AIR EF-2/B 966 CFM EF-2/A 966 CFM
2889 CFM FRESH AIR
5529 CFM WORKING WORKING
WITH GRAVITY SHUTTER (28X16")
And Accessories /installation as per
Manufacturer recommendation/
company requirements.
WITH GRAVITY SHUTTER (28X16")
And Accessories /installation as per
Manufacturer recommendation/
company requirements.
Alghanim International
AHU-02 General Trading & Contracting Co. Ltd.
GENERAL NOTES CONTRACTOR REMARKS SEC AHU-01
1 Contractor shall be responsible for dimensions of all proposed HVAC units. COMPLY SEC
2 COMPLY S.NO. GENERAL NOTES CONTRACTOR REMARKS L&T HYDROCARBON ENGINEERING
Revised dust size to maintain the pressure limit as per ASHRAE.
11 Provide and install auto change over switch for battery room exhaust fans. NOTED/COMPLY
3 Provide / show / install volume control damper (VCD) before each branch / air outlet. COMPLY ENGINEERING SERVICES
(Provided VCD in all Branches) 12 Select/calculate all duct & air inlet / outlet as per the ASHRAE standard to maintain velocity & noise. NOTED
4 Total air flow shall match the approved calculation. COMPLY
13 Provide and show the gas cylinder exhaust fans. COMPLY
5 Refer the flow marked and update duct/airinlet/airoutlet accordingly. COMPLY
14 Provide / show foundations details of all AHU's / HVAC equipments units. NOTED SAHARA AIR-CONDITIONING & REFR.CONT. CO. W.L.L
(Provided Foundation Drawing)
6 Indicate the location of DB & DDC. COMPLY P.O.BOX No - 7565, FAHAHEEL - 64006
15
Provide / show door/transfer grill for all toilets & pantry as per note no. # 21 of tender drawing No. # 10-5-524. COMPLY
The location of thermostat, shown on drawing shall be considered as information only. The contractor shall coordinate COMPLY TEL : 23981915, FAX : 23981916
7 Contractor shall be only responsible to coordinate other trades as per the actual site condition to avoid the duct running
at site to install as per site condition get prior approval from concerned site engineer. NOTED 16 NOTED
passing and air outlets just above / top of any electric/electronic panels / switches etc. DRAWN ZAHEER CHECKED DATE 11.07.2019 AS SHOWN
ENG.RIZWAN SCALE
COMPLY
8 Indicate / show the tag for all room type mini split units and provide as per the approved calculation. 17 Contractor shall be responsible to coordinate with fire suppression Vendor/Contractor to provide pressure regulating
NOTED
damper (PRD) of approved size/dimention as per Cl # 5.12.9 of TS part VII-HVAC works (whether given/shown here or not. NOTED
9 The HVAC arrangement in UPS room is acceptable,subject to without any contractor impact. NOTED
18 All duct elbow shall have smooth radius type with turning vanes. COMPLY
10
Contractor shall be responsible to coordinate with reflected / false ceiling drawing for exact location of air inlet/outlets NOTED

PROJ. No.
CLIENT DRG. No. REV. VENDOR DRG. No. REV.

EF / 1971 AI-KOC-17051670-HVAC-DW-012-SC53 GCS-07-SAC-6030-000039

B
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