Pressure Independent
Variable Air Volume (Single Duct)
1
a perfect partner in performance...
Pressure Independent Variable Air Volume ( Single Duct)
Our Product Ranges
1
2
3
4
5
Dampers
Fire Dampers
Fire / Smoke Dampers
Volume Control Dampers
Motorized Control Dampers
Pressure Relief Dampers /Non Return Dampers
6 Pressure Independent VAV
Variable Air Volumes
7 Constant Air Volume VAV
8 By Pass VAV
9
10
11
12
13
Louvers
Sand Trap Louvers
Acoustic Louvers
Stationery Louvers / Architectural Louvers
Storm Louvers
Weather Louvers
14 Rectangular Sound Attenuators
SoundAttenuators
Attenuators
Sound
15 Circular Sound Attenuators
16 Crosstalk Attenuators
17 Flange & Slip 'n' Type
ElectricDuct
Duct Heaters
Heaters
Electric
18 Modulating & On/Off Type
19 Registers & Grilles
20
AirOutlets
Outlets
Air
Diffusers (Linear Diffusers, Sq. & Rect. Ceiling
Diffusers, Round Diffusers, Jetflow Diffusers
21 Swirl Diffusers & Disc Valves
22 Drum Louvers
a perfect partner in performance...
2
Pressure Independent Variable Air Volume ( Single Duct)
INDEX
Page
Introduction...................................................................................................... 05
Key features & benefits of VAV System....................................................06
Standard Construction Details ...................................................................07
Standard Construction Details ...................................................................08
Dimensional Data............................................................................................09
Leakage Characteristics for Single Duct VAV...........................................10
Types of VAV........................................................................................................11
Electric Heater Details ...................................................................................12
Engineering Guidelines .............................................................................13-15
Our OEM Partners .......................................................................................... 16
Material Storage, Operation & Maintenance............................................17
Trouble shooting...............................................................................................18
3
a perfect partner in performance...
Pressure Independent Variable Air Volume ( Single Duct)
Pressure Independent
Variable Air Volume (Single Duct)
a perfect partner in performance...
4
Pressure Independent Variable Air Volume ( Single Duct)
Introduction
Airwellcare Variable Air Volume (VAV)
controller is an electronic device for
digital control of single duct, dual duct, fan
powered, and supply / ex-haust VAV terminal
configurations.
Central VAV systems are considered to
be the most energy efficient method to air
condition buildings. By designing central
systems instead of distributed systems, a
greater efficiency can be obtained.
The VAV System that works..
Airwellcare Pressure Independent VAV
The air passes into each zone from the
ductwork through individual VAV boxes. A
temperature sensor located in each zone
is connected to its VAV box and opens or
closes the VAV box to maintain the defined
temperature set-point.
System controls the exact volume of primary
air which flows to the occupied area by the
help of an airflow measuring device on the
VAV terminal. The VAVs can be widely used
as a standalone controller or connected to
a Network through our Network Control
Module.
As the zone becomes satisfied, the VAV
box modulates to a closed position. As the
zone´s requirements become satisfied, the
pressure in the ductwork begins to rise as
the openings in the ductwork close.
Pressure independent control upsurges
the steadiness of flow control permitting
minimum and maximum flow settings to
become actual airflows rather than physical
positions of the modulation device, as
common as most popular in all VAV Control
Systems.
Variable Air Volume systems, are used to
control both the ventilation and temperature
to satisfy the requirements of a building.
VAV Applications :
5
Residential & Commercial Buildings
Airports
Office space
Hospitals
Hotels
Retail stores
Shopping Malls
Educational facilities
Indoor Games
Stadiums
Theaters
a perfect partner in performance...
Pressure Independent Variable Air Volume ( Single Duct)
Key features & benefits of VAV System
Cost-Effective & Improved
Indoor Air Quality
Airwellcare VAV systems can change the
Quality Assurance &
Performance
supply air volume according to the cooling
and heating load variation to enable the
cooling, heating capacity and fan power to
meet actual load requirement, resulting the
significant reduction of energy consumption.
Airwellcare VAV Systems & Controllers
ensures the product quality, system
compatibility and the perfect system
integration, to meet the current industry
regulations and standards.
These VAV systems can utilize the outdoor
fresh air as much as possible during
transitional seasons, which not only saves
energy consumption, but also improves
indoor air quality. It is estimated that over
30% of the annual energy consumption can
be saved and 10-30% of total equipment
capacity can be reduced by using VAV system.
Simple Construction &
Installation
Airwellcare VAV boxes are constructed
with high quality Galvanized Steel casing/
Aluminium casing which makes handling &
installation simple and easy.
Compatible to any Building Management
System (BMS)
Airwellcare VAV systems can be integrated
to any BMS (Building Management System)
through Direct Digital Control (DDC)control.
System optimization and monitoring of
the whole system can be achieved by
computerized centralized system.
a perfect partner in performance...
6
Compact Design.
Low Pressure Loss over the Unit.
Single or Double Wall Construction.
Factory assembled controls & calibration.
Multi-leaf low leakage Blades for Heavy
Duty Applications.
Maintenance Free.
Accurate Air Volume Control with Centre
averaging multipoint airflow differential
cross velocity pressure sensor.
Demand based single room application.
Individual room comfort.
Pressure Independent Variable Air Volume ( Single Duct)
Standard Construction Details
Casing Casings are made of high quality Galvanized Sheet Steel of 1.0mm Thick.
Internal Insulation VAV Boxes are Internally Insulated with ½ Inch Or 1 Inch Acoustic
Liner (in compliance with project requirement).
Metal encapsulated edge prevents cut fibers of the insulating plate falling off, and avoids
erosion in the air stream.
VAV Damper Shafts VAV Damper Shafts are made of 12mm Dia Round Solid
Composite Steel shafts, which prevents condensation and breakage.
Damper Gaskets Blade edges are sealed with Rubber Gaskets, preventing air leakage
and for an air tight operation with low leakage characteristics.
VAV Sound Attenuator (optional only) VAVs are provided with Sound Attenuator
as an optional (upon request), where excess noise to be decreased or controlled
maximum.
Flow Grid Differential Flow Grids are located inside the VAV inlet with pre-calibrated
holes with die cast aluminum junction, which measures air volume accurately.
Electric Duct Heater (Optional only) Terminal shall include an integral electric
heater, where indicated on the plans. The heater Control Box shall be constructed of not
less than 20 gauge galvanized steel. Heater shall have a hinged access panel for entry to
the controls.
VAV Controls
VAVs Controls are factory assembled & calibrated based on Customers project
requirements, which will comprise of :
DDC Controls (BACnet & LON Works)
Standalone System
Double wall construction
7
a perfect partner in performance...
Pressure Independent Variable Air Volume ( Single Duct)
Standard Construction Details
Blade Gasket
Blade edges are sealed with
Gaskets, preventing the air leakage and for an
air tight operation
Brass / SS Ball Bearing
Self -lubricating bearing to reduce friction and
air leakage
VAV Damper Shafts are made of
12mm Round Solid Composite Steel
which prevents condensation & breakage
Internal Insulation
Internally insulated with 12.5 (1/2 Inch) 25mm (1 Inch)
Acoustic liner. Metal encapsulated edge prevents
cut fibers of the insulating plate falling off, and avoids
erosion in the air stream.
Double Wall
0.7mm Thick (3mm hole x 5mm pich)
Galvanized perforation prevents cut
fibers of the insulating plate falling off,
and avoids erosion in the air stream.
Slip and drive discharge collar for
quick field installation
a perfect partner in performance...
Control Box (Heater)
Electrical Heater devices
installed within NEMA
1 enclosure, with single
point power connection
8
Control Box (VAV)
Electrical devices installed
with single point power
connection
Pressure Independent Variable Air Volume ( Single Duct)
Dimensional Data
Dimensional Data
Sound Attenuator
Airflow Ranges (CFM)
Airflow Ranges (CFM)
Model & Unit Air Flow (cfm)
Size
Max
Min
Box Dimensions (mm)
W
H
L
A
I
D
L+A
AHS 4
45
250
275
250
400
500
80
175
900
AHS 5
70
350
300
250
400
500
80
175
900
AHS 6
75
475
325
275
400
500
80
175
900
AHS 8
140
950
375
300
500
500
80
200
1000
AHS 10
230
1540
425
350
500
600
80
300
1100
AHS 12
340
2200
450
400
600
600
80
350
1200
AHS 14
480
3100
550
425
600
600
80
350
1200
AHS 16
625
4100
650
450
700
600
80
400
1300
AHS 18
1180
5200
750
450
750
600
80
400
1350
Page | 8
9
a perfect partner in performance...
Pressure Independent Variable Air Volume ( Single Duct)
Leakage Characteristics for Single Duct VAV
The
above data for Single Duct VAV units.
Damper leakage tested at 1.0” Differential Pressure.
Casing has been leakage tested at 0.5” Differential Pressure.
The
Leakage ratings as per ASHRAE 90.1 & AHRI Standards for VAVs.
Each Pressure input
signal is routed to the
centre averaging
chamber with equally
made concentric circular
areas (3, 4 & 5
Concentric holes based
on inlet size.
Damper
Inlet
a perfect partner in performance...
10
Pressure Independent Variable Air Volume ( Single Duct)
Types & Selections
Airwellcare Variable Air Volume models are designed & manufactured
to achieve the optimum performance by carefully selecting the inlet size of
a variable air volume (VAV) terminal box considering the important factors
such as :
Pressure drop across the box ability of the VAV box controller to measure & control
the desired minimum and maximum air flow set points.
Its installation
Noise generation
Rectangular Type
Rectangular Pressure Independent Variable Air Volume Box.
Stand Alone System with Standard Controllers
Comprising weather proof Control Box
Double Wall Construction
Optional with DDC Controls (BACnet Or Lon Marks)
With Suitable Thermostats
Circular Type
Circular Pressure Independent Variable Air Volume Box
Stand Alone System with Standard Controllers
Comprising weather proof Control Box
Double Wall Construction
Optional with DDC Controls (BACnet Or Lon Marks)
With Suitable Thermostats
With Electrical Duct Heater
Pressure Independent Variable Air Volume Box with Electric Duct Heater
Stand Alone System
Double Wall Construction
Comprising weather proof Control Box
Optional with DDC Controls (BACnet Or Lon Marks)
Comprising all Electrical Heater Components
Modulating Or On/Off Heater Control selections
Single Phase Or 3 Phase Selections
With Suitable Thermostats
11
a perfect partner in performance...
Pressure Independent Variable Air Volume ( Single Duct)
Electric Heater Details
Electrical Heater Components
Electric heaters shall be factory mounted
to the terminal with the heating elements
located upstream of the air-flow control
damper to ensure uniform velocity profile
over the elements.
A power disconnect shall be furnished to
render the heater non-operational. Heater
shall be furnished with all controls necessary
for safe operation and full compliance
with UL 1996 and National Electric Code
requirements.
Heater shall have a single point electrical
connection. It shall include a primary disc
type automatic reset high temperature limit,
secondary high limit(s), airflow switch,
Ni-Chrome elements, and fusing per UL
and NEC. Heater shall have complete
wiring diagram with label indicating power
requirement and kw output.
a perfect partner in performance...
12
Stainless
Elements
Steel
Finned
Tubular
Hinged Weather proof Control Panel
Airflow Switch
Control Transformer (optional)
Magnetic Contactors
Fuse
SCR Power Controllers / On-Off
Controller
Miniature Circuit Breaker (MCB)
Bimetal Linear Manual Resettable
Thermal Cut out
Automatic Thermal cut out.
Pressure Independent Variable Air Volume ( Single Duct)
Engineering Guidelines
Radiated Sound Power Data
Sound Levels are based on dB re: 1x 10-12 Watts.
The above data is obtained outside the Certification Programme.
13
a perfect partner in performance...
Pressure Independent Variable Air Volume ( Single Duct)
Engineering Guidelines
Discharge Sound Power Data
0.5" rPs
Unit
Size
1.0" rPs
1.5" rPs
3.0" rPs
OCTAVE BAND
CFM
125 250 500 1K 2K 4K 125 250 500 1K 2K 4K 125 250 500 1K 2K 4K 125 250 500 1K 2K 4K
4
5
6
8
10
12
14
16
u
u
100
57
55
46
42
36
35
61
59
50
46
43
43
61
60
52
48
45
44
62
60
55
53
51
52
150
61
60
50
46
41
36
66
64
54
50
46
45
69
65
55
51
47
45
68
67
60
57
56
55
200
65
63
53
49
44
42
71
67
57
53
48
48
72
69
59
550
50
50
73
72
64
60
57
55
250
68
65
55
53
46
45
72
70
59
55
51
49
73
71
61
58
53
52
76
76
65
62
59
58
100
55
53
44
40
35
33
58
57
48
43
42
43
59
58
50
46
44
45
59
59
54
50
50
51
200
62
60
51
46
41
38
66
64
54
50
45
44
67
66
57
52
47
66
66
61
57
55
55
56
250
65
62
53
48
43
41
69
67
56
52
47
45
70
68
59
55
51
50
69
69
63
59
56
56
300
68
64
54
50
45
43
71
68
54
49
47
70
70
60
56
51
50
70
70
70
63
60
58
58
350
68
65
55
51
47
45
73
70
59
55
50
49
74
71
62
57
53
51
73
72
66
62
60
57
200
54
51
48
44
38
36
59
56
52
48
44
42
60
59
55
51
47
45
65
65
2
57
54
53
250
59
53
49
46
40
37
63
58
53
49
45
43
64
61
56
52
48
47
66
67
63
59
56
55
300
61
55
51
47
41
39
64
60
54
51
46
44
65
63
57
54
50
48
68
68
64
60
57
55
350
62
57
52
48
42
40
65
63
55
52
47
46
66
64
58
55
51
50
70
70
65
62
58
57
400
63
58
53
50
43
41
66
64
57
53
48
48
69
65
61
57
56
53
71
71
66
63
59
58
450
64
59
54
51
44
42
68
65
58
54
49
48
70
68
60
57
52
52
73
72
67
64
59
60
550
67
62
55
53
46
45
70
68
61
56
50
50
72
70
63
59
54
53
76
74
69
66
61
63
300
55
50
47
44
41
37
58
55
52
47
47
45
60
58
55
50
50
48
65
65
65
60
60
68
400
58
53
49
46
43
39
61
58
53
50
48
56
63
61
56
53
51
49
67
67
66
59
59
58
500
60
55
51
48
44
41
64
60
54
52
49
47
65
63
57
55
53
50
69
69
67
61
61
60
600
62
57
52
50
46
42
66
61
56
53
50
48
67
65
59
56
54
52
71
70
68
63
61
62
700
64
58
54
51
47
43
68
63
57
55
52
49
69
69
63
59
56
56
73
72
68
64
62
60
61
800
66
60
55
52
48
44
69
64
59
56
53
50
71
67
63
60
57
55
74
73
68
65
63
1000
70
63
57
54
50
46
72
67
62
58
55
52
74
71
64
67
58
56
78
75
70
67
65
61
600
57
53
49
46
44
40
63
59
56
50
49
46
64
62
59
53
51
50
69
70
68
63
59
57
800
60
55
52
49
46
42
64
61
57
52
51
48
67
63
60
55
54
52
71
71
69
64
61
59
1000
63
58
54
51
48
44
67
63
59
54
52
50
69
65
61
57
56
53
74
72
69
64
63
60
1100
64
58
55
52
48
45
68
64
59
55
53
50
70
68
60
57
52
52
74
73
69
65
64
61
1200
65
59
55
53
49
45
69
65
60
56
54
51
71
67
63
61
57
55
75
74
70
66
64
62
1400
67
61
57
54
50
47
70
67
62
58
55
52
73
69
64
61
58
56
77
75
71
67
65
63
1600
69
63
59
56
51
48
74
69
65
60
56
53
76
71
67
62
60
57
80
76
73
69
67
64
59
800
57
52
49
45
43
40
61
59
58
54
52
50
63
61
61
56
54
52
68
68
68
63
60
1100
61
55
52
48
46
42
65
61
60
55
53
52
67
63
62
58
56
54
71
69
68
65
63
61
1400
63
57
54
51
48
44
67
63
61
56
54
52
70
65
63
59
56
54
74
71
71
67
64
62
1600
65
58
56
52
49
45
69
64
62
57
55
52
71
66
62
59
57
56
75
72
72
68
65
63
1700
66
59
56
53
49
46
69
64
62
58
55
52
72
67
65
61
59
57
76
73
72
69
66
64
2000
68
61
58
54
51
47
71
65
64
60
57
53
74
68
66
62
60
57
78
75
73
70
67
66
2300
69
63
61
56
52
49
73
67
65
61
58
55
75
70
67
63
60
58
80
76
75
70
68
67
1100
58
51
49
46
43
40
63
58
54
53
52
52
64
61
57
56
54
54
69
68
67
64
62
62
1500
61
54
52
48
46
42
65
59
56
54
53
52
67
62
59
57
56
55
72
70
68
65
63
63
1900
64
57
55
51
47
44
68
62
58
55
54
53
70
64
61
58
56
56
74
71
69
66
64
63
2100
65
58
56
52
48
45
69
63
59
56
54
54
71
66
62
59
57
56
76
72
69
67
65
64
2300
66
59
57
53
49
46
70
63
60
56
55
54
73
67
65
60
58
57
77
73
70
68
66
64
2700
68
60
59
54
50
47
72
65
62
58
56
55
74
68
65
61
59
51
79
74
72
69
67
65
3100
70
62
61
56
52
48
74
66
64
60
57
56
76
69
67
62
60
59
80
75
74
70
68
67
1600
60
52
51
46
43
41
63
57
54
54
52
51
66
59
57
56
54
53
70
65
64
62
62
60
2100
63
55
54
49
46
43
67
60
57
55
54
51
69
63
60
58
56
54
73
70
67
65
64
62
2600
65
57
56
51
47
45
69
63
59
56
54
53
71
66
62
59
57
56
76
74
69
67
67
65
2800
66
58
57
52
48
45
70
64
60
56
54
53
74
68
65
61
59
58
76
74
70
68
64
65
3100
67
59
58
53
49
46
71
65
61
57
55
54
75
69
65
60
58
57
78
75
71
69
67
66
3600
69
61
9
54
50
47
73
67
63
58
56
54
75
69
66
61
59
57
80
77
73
70
68
67
4100
71
63
62
56
51
49
75
68
67
60
57
55
77
71
69
62
60
58
81
79
74
70
68
68
Sound levels are based on dB re: 1 x 10-12 Watts
The above data is obtained outside the certification programme.
a perfect partner in performance...
14
Pressure Independent Variable Air Volume ( Single Duct)
Engineering Guidelines
Sound Data
Noise Levels & Static Presure Drop
Discharge Noise
Unit
CFM rPa
Size
4
5
6
8
10
12
14
16
100
150
200
250
100
200
300
350
200
250
300
350
450
550
300
400
500
600
800
1000
600
800
1000
1200
1400
1600
800
1100
1400
1700
2000
2300
1100
1500
1900
2300
2700
3100
1600
2100
2600
3100
3600
4100
0.011
0.011
0.011
0.011
0.011
0.011
0.011
0.011
0.022
0.031
0.042
0.063
0.12
0.16
0.02
0.02
0.02
0.02
0.02
0.05
0.015
0.015
0.03
0.03
0.03
0.05
0.014
0.014
0.03
0.03
0.05
0.06
0.017
0.04
0.05
0.06
0.08
0.15
0.12
0.03
0.05
0.05
0.07
0.08
Radiated Noise
NC
NC
(Min. Inlet Static Pressure)
0.5"
1.0"
3.0"
(Min.Inlet Static Pressure)
0.5"
1.0"
3.0"
12
14
22
25
13
14
23
24
12
14
15
17
18
20
10
11
13
15
17
21
12
14
16
16
17
20
12
14
15
17
18
20
11
12
16
18
19
21
15
17
18
20
21
23
15
18
23
26
16
18
20
22
16
18
18
19
21
24
19
19
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a perfect partner in performance...
Pressure Independent Variable Air Volume ( Single Duct)
Our OEM Partners
Our OEM Partners
Note : The above OEM Controller’s images are indicative only. The actual models and
the image displayed above may vary in compatible with the selection of VAV and its applications.
a perfect partner in performance...
Page | 15
16
Pressure Independent Variable Air Volume ( Single Duct)
Material Storage, Operation & Maintenance
Receiving, Handling & Storage
If the lubrication is desired for components
such as axle bearings, Shaft bearings etc.
do not use oil based lubricants or any other
lubricant that attract contamination or any
other lubricants that attack contaminants
such as dust.
The Variable Air Volume needs to be
handled carefully while loading or
offloading, as per the upright arrow marks
given on the unit in the right position. Care
should be taken in lifting the product in all
4 corners and placing them on a raised
floor level. Don’t pull or push the product
on the floor level.
Once the installation is finished, the
contractor should note / record complete
operation of the VAV’s. Also, on the VAV
performance the contractor / Building
owner should record the readings at every
month intervals, the complete operations
of the VAV from V-min. to V-max. positions,
date, time and maintenance engineer’s
name and signature.
Store the product always dry in
environment. Do not expose this product
into the dust or humid environment.
Never expose this product to temperature
exceeding 140ºF (60ºC). After receiving the
VAVs, check for both obvious and hidden
damages. If damage is found, record all
necessary information and file a claim
with the final carrier.
VAV and their actuator must be maintained,
cycled and tested in accordance with:
• The standards of ARI 880 (ETL intertek),
NFPA90A and SMACNA.
Indoor storage and protection from dirt,
dust and weather is highly recommended.
For safety and protection, follow all
instructions and adhere to applicable
building and electrical codes.
• Actuator manufacturer recommendations.
• VAV manufacturer recommendations.
Warranty
AIRWELLCARE warrants this equipment
to be free from defects in material and
workmanship for a period of one year from
the purchase date. Any units or parts which
prove to be defective during the warranty
period will be required or replaced at our
option. AIRWELLCARE shall not be liable
for damages resulting from misapplication
or misuse of its products. AIRWELLCARE
shall not be responsible for any installation
or removal costs. AIRWELLCARE shall not
be responsible for any services work done
by a third party or back charges from the
direct party.
Safety Warning
Improper
installation,
adjustment,
alteration, service or maintenance can
cause property damage, Injury or death.
Read the installation, operating and
maintenance instructions thoroughly
before installing or servicing of this
equipment.
Maintenance
VAV’s does not typically require
maintenance as long as it is kept dry and
clean. If cleaning is required, use mild
detergents or solvents.
17
a perfect partner in performance...
Pressure Independent Variable Air Volume ( Single Duct)
Trouble Shooting
Trouble shooting
The following is a possible cause and correction list for common concerns with the
Variable Air Volumes.
Symptom
Possible Cause
Correction
Frame is racked causing blades to Adjust frame such that it is square and
bind on frames
plumb
Close damper, disconnect power, adjust
and tightening linkage
Actuator linkage loose
VAV does not closing
Loose in wire connection
and / or opening
Close damper, disconnect power, adjust
and tightening linkage
Defective motor
Replace the motor (Actuator)
Foreign screw in VAV linkage
Check VAV Linkages
Contaminants on VAV
Cleanwith a non-oil based solvent
Defective Thermostat
Replace the Thermostat
Improper Thermostat
response
Loose Wire Connection
Disconnect the power connection and
check the wiring connections
VAV does not work
No power supplied to the Actuator Add power supply to the device
Reheating coil does
not work (optional
fittings)
TRD Heated
Reset Manually
Loose Wire Connection
Disconnect the power and check the
wiring connections
a perfect partner in performance...
Page | 17
18
Pressure Independent Variable Air Volume ( Single Duct)
19
a perfect partner in performance...
P.O Box 42707
Factory at LV-16 A, Logistic Village, Phase 2, Hamriyah Free Zone
Sharjah, United Arab Emirates
Tel. +971 (6) 526 4061 / Fax. + 971 (6) 526 4062
Email : [email protected]
Web : www.airwellcare.com
The contents of the catalogue is subject to change without notice / All rights reserved — Airwellcare
a perfect partner in performance...
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