NC series Compact VAV and CAV air volume control terminals
NC series
Compact VAV and CAV air volume control terminals
Description
Type designation
Technical data
- General
- Specification
- Installation instruction
Model overview dimensios
Sound data
Sound data
Sound data
Sound data
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NCOA...
NCOC...
NCOG... / NCON...
NCOJ... / NCOQ...
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Compact VAV and CAV air volume control terminals
Table of contents
Changes w/o notice or obligationRev 100422
1
N - C - O - N - E - O - BPosition 1 : Product group Ordering example :
N = air volume control terminals N C O N E O B 1 6 0 R 1 0 0 0
O Position 3 : ( )Controls manufacturerO without controls
For controls contact our sales staff =
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N Position 4 : Outlet
N
C Position 2 : Function
A single wall circular volume control terminal = , B = double wall circular volume control terminal ,
C = compact type
E Position 5 : Reheat coil
O Position 6: & Controls type function( )
B Positon 7: Sensor
Handingcontrols
Heater
&
Electric heatercapacity (Watt)
Model 100-400
Ordering codes Specials " "
N..1... - 3010 = 4 balancing dampers in Octopus’ outlet
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N..1... - 3006 = ‘Octopus’ with 6 outlets instead of 4
N..1... - 3016 = ‘Octopus’ with 6 outlets incl. balancing dampers
N..1... - FL = Flange connection 30mm for rectangularoutlet
Ordering information :
Standard terminals:
- quantity of terminals- complete 7 digit code- terminal size or model- air volume setting (V , V etc)- control handing (standard right side)- if applicable, electric reheat coil
capacity- supply or return air
max min
Non standard terminals:
- for non standard terminals a fulldescription and / or drawing arerequested
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1 = non standard specify separately ,
rectangular outletcircular outlet4 circular outlets Octopusrectangular outlet and provision for integral hot water reheat coil4 circular outlets and provision for integral hot water reheat coilrectangular outlet and provision for integral electric reheat coil4 circular outlets and provision for integral electric reheat coilnon standard specify separately
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ABCGJNQ1
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without reheat coil1-row hot water reheat2-row hot water reheat4-row hot water reheat1-stage 230VAC/1-phase electric reheat coil2-stage 230VAC/1-phase electric reheat coil3-stage 230VAC/1-phase electric reheat coil1-stage 400VAC/3-phase electric reheat coil2-stage 400VAC/3-phase electric reheat coilnon standard specify separately
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OABDEFGHJ1
==========
O without controlsFor controls, contact our sales staff
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OB
1
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not applicableFlo-cross, 2 x 12 point averaging and signal amplifying air flow sensor (standard)non standard, specify separately
See above
2Changes w/o notice or obligation
Rev 100422
Composition type designation:
Compact VAV and CAV air volume control terminals
Type designationNC.....
Application
Types NC are compact pressureindependent VAV and CAV airvolume control terminals With round inlet and rectangular outlet. The terminals are designed for the accurate measurement and control of air volumes courtesy of the patented airflow sensor.In CAV application, the terminals maintain the required constant airflow independent of the inlet static pressure.In VAV application, the terminals control the air volume to the room, depending on the cooling load required thus saving energy in both cooling and heating applications.The VAV or CAV terminals can be used either for supply or return air applications in new or refurbishment projects. The terminals can be delivered with a distribution plenum and a built-in hot water or electric reheat coil.
Pressure independent controlfunctions
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Flo-Cross
Volume control range 100% to10%Low pressure loss over theterminalFactory fitted distributionplenum with built in hot wateror electric reheat coilOval shaped damper blade forlinear control characteristicsLow leakage damper, less than 1% of Vnom at 750 PaLow noise levelSuitable for all control functions (VAV, CAV, shut-off, etc.) To maximise system energy savings
Features: ●
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Flo-Cross, 2 x 12 points averaging and signal amplifying airflow sensor, better than 2.5% accuracy even with irregular duct approachMaintenance free
The rectangular discharge section is internally insulated
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Technical information
Casing
Insulation
Damper
Flo-Cross
Distribution plenum
Reheat coil
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Air-tight construction made of galvanized sheet steel with low casing leakage rate.
Damper blade made of steelsandwich construction with twinblades and a neoprene gasket withlow leakageDamper shaft aluminium,Φ12mm with self lubricating nylon bearings.
Extruded aluminium construction with nylon core and feet
Made of galvanised sheet steel with 13 mm internal isolation. Plenum with standard rectangular or multiple (4 x circular) outlet construction. Optional 1,2,3 or 6 circular outlets are possibleOutlet spigots are made ofgalvanised steel and optionally can be provided with volume control dampers
Choice of 1, 2 or 4-row hot water reheat coil or electric reheat coil (230VAC/1-phase or 400VAC/3-phase).
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Controls:Suitable for use with pneumatic, analogue electronic or DDC controllers. Controls can be factory fitted, wired and calibratedControls enclosure galvanisedsheet steel can be providedoptionally
The VAV or CAV terminal will be supplied as a single mounting assembly.
Controls location and hot water or electric connections are as standard fitted on the right hand side of the terminal when looking in the direction of the airflow
On request, the terminal can be delivered with connections on the left hand side.
When terminals are orderedwith controls, these will befactory fitted, wired andcalibrated upon request
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Delivery format:
Delivery format:●
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Optional ordered distribution plenum, reheat coil and/or controls are factory fitted, wired and calibrated. The terminal can be directly installed and commissioned when delivered to site.
Changes w/o notice or obligation3
Rev 100422
Technical dataType (NC.....)
Compact VAV and CAV air volume control terminals
Specify as:
Example:Supply and install, variable air volume terminals with distribution plenum and 4 circular outlets, constructed from galvanized sheet steel. The casing leakage rate shall be classified according to class II, VDI3803/DIN24194. The VAV terminals shall have oval shaped damper blade with neoprene gasket and an aluminium damper shaft with self lubricating nylon bearings.
A centre averaging airflow sensor with at least 2 x 12 test points and amplified signal, type Flo-Cross shall control the airflow with an accuracy better than 2.5%. The terminals shall be supplied with 1-row hot water reheat coil.
Max. radiated sound index < NC30 (@250Pa Δp)
Ordering example type - model -handing= NCOJAOB - 200R
Manufacturer: HC Barcol-Air
The controller shall be I A Series, DDC controller LonMark compatible, type MNL-V2RVx orBACnet, type MNB-V2.
Controls must be factory fitted, wired and calibrated according to the following requirements:
Miximum air volume 250 l/sMinimum air volume 60 l/sMinimum air volume 120 l/s (in case of reheat)Terminal size 200 mmMax. pressure loss 38 PaMax. discharge sound index < NC30 (@250Pa Δp)
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Installation Instructions :
The HC Barcol-Air VAV terminalsshall be installed using at leasttwo support channels, with anti-vibration rubber under theterminal as shown in the drawing below). Each of these channelsshall be fixed with two threadedrods to the ceiling slababove Alternatively 4 duct fixinghooks can be privided forsuspending the units
The installation method1 Shall prevent the body of the
VAV terminal from highmechanical tension, which could damage the constructionand performance of the terminal
2 Shall prevent torsion on the VAVterminals, which could causemalfunction of the damperblades
3 Provides some flexibility to thefinal location of the VAVterminals
4 Use at least one diameterstraight duct length before theVAV inlet
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5 Additional manual volume control dampers VCD s before the unit inlet should not be used.
6 All connections shall bethermally isolated
7 Pressure sensing tubes ofFloCross airflow sensor shallnot be kinked or otherwiseobstructed by the externalduct insulation
See drawing below.
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" "
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“slip & Drive connections”
suspension bracket for duct (with anti-vibrotion rubber against vibration and to avoid thermal bridge)
STANDARD MOUNTING OPTIONAL MOUNTING
anti-vibration rubber inlaymounting rail M8ring M8
hexagonal nut M8theroded end M8
optional: 4 x duct fixing hook contact HC Barcol-Air for futther details
Changes w/o notice or obligation4
Rev 100422
Technical dataType (NC.....)
Compact VAV and CAV air volume control terminals
Type NCOAOOB Type NCOG.OB Type NCON.OB
Type NCOP.OBType NCOH.OBType NCOCOOB
Type NCOJ.OB Type NCOQ.OB
Other dimensions are avaliable upon request .
Dimensions NC terminals
Changes w/o notice or obligation5
Rev 100422
Kv values
Technical dataType (NC.....)
:
1.
Sound data is determined in a reverberationroom at an independent sound laboratory, according to ISO3741 and ISO 5135 standards.
2. Lw in dB/Oct.(re 1pW) are sound power levels for discharge sound and case radiated sound. Figures less than 17 dB are indicated by “-”.
3. The discharge sound pressure levels are determined with the assumptions as mentioned in table 1 for downstream ductwork including a diffuser with insulated plenum box.
4. The radiated sound pressure levels are determined
with the assumptions as mentioned in table 1 for ceiling plenum and suspended ceiling absorption.
5. Lp values are including a room absorption of 10 dB/Oct.
6. DB(A), NC and NR index figures are sound pressure levels. Figures less than 20 are indicated by “- -”.
7. Δps is static pressure drop across VAV airvolume control terminal with damper fully open.
8. For non standard applications and/or selections, please contatct our technical staff.
HzDischarge dBRadiated dB
( )
( )
12552
250105
5002010
1K3015
2K3015
4K2520
Sound data p = 125 Pa Δ
Compact VAV and CAV air volume control terminals
Type NCOAOOB
Table 1 : Assumptions for additional attenuation
Changes w/o notice or obligation6
Rev 100422
data refering toinlet spigot
air volume
minPs
. Δ
discharge sound
Lp values
Δp = 125 Paradiated sound
Lp values
1.
Sound data is determined in a reverberationroom at an independent sound laboratory, according to ISO3741 and ISO 5135 standards.
2. Lw in dB/Oct.(re 1pW) are sound power levels for discharge sound and case radiated sound. Figures less than 17 dB are indicated by “-”.
3. The discharge sound pressure levels are determined with the assumptions as mentioned in table 1 for downstream ductwork including a diffuser with insulated plenum box.
4. The radiated sound pressure levels are determined
with the assumptions as mentioned in table 1 for ceiling plenum and suspended ceiling absorption.
5. Lp values are including a room absorption of 10 dB/Oct.
6. DB(A), NC and NR index figures are sound pressure levels. Figures less than 20 are indicated by “- -”.
7. Δps is static pressure drop across VAV airvolume control terminal with damper fully open.
8. For non standard applications and/or selections, please contatct our technical staff.
HzDischarge dBRadiated dB
( )
( )
12552
250105
5002010
1K3015
2K3015
4K2520
Table 1 : Assumptions for additional attenuation
Changes w/o notice or obligation7
Rev 100422
Sound data p = 250 Pa Δ
Compact VAV and CAV air volume control terminals
Type NCOAOOB
data refering toinlet spigot
air volume
minPs
. Δ
discharge sound
Lp values
radiated sound Lp values
Sound data p = 125 Pa Δ
Compact VAV and CAV air volume control terminals
Type NCOCOOB
1.
Sound data is determined in a reverberationroom at an independent sound laboratory, according to ISO3741 and ISO 5135 standards.
2. Lw in dB/Oct.(re 1pW) are sound power levels for discharge sound and case radiated sound. Figures less than 17 dB are indicated by “-”.
3. The discharge sound pressure levels are determined with the assumptions as mentioned in table 1 for downstream ductwork including a diffuser with insulated plenum box.
4. The radiated sound pressure levels are determined with the assumptions as mentioned in table 1 for ceiling plenum and suspended ceiling absorption.
5. Lp values are including a room absorption of 10 dB/Oct.
6. DB(A), NC and NR index figures are sound pressure levels. Figures less than 20 are indicated by “- -”.
7. Δps is static pressure drop across VAV airvolume control terminal with damper fully open.
8. For non standard applications and/or selections, please contatct our technical staff.
HzDischarge dBRadiated dB
( )
( )
12552
250105
5002010
1K3015
2K3015
4K2520
Table 1 : Assumptions for additional attenuation
Changes w/o notice or obligation8
Rev 100422
Model100125160200250315355400
12598887777
250109988888
50011101099999
1K1312121111111111
2K1514141313131313
4K1514141313131313
HzdBdBdBdBdBdBdBdB
Table 2 Insertion Loss :
data refering toinlet spigot
air volume
minPs
. Δ
discharge sound
Lp values
radiated sound Lp values
1.
Sound data is determined in a reverberationroom at an independent sound laboratory, according to ISO3741 and ISO 5135 standards.
2. Lw in dB/Oct.(re 1pW) are sound power levels for discharge sound and case radiated sound. Figures less than 17 dB are indicated by “-”.
3. The discharge sound pressure levels are determined with the assumptions as mentioned in table 1 for downstream ductwork including a diffuser with insulated plenum box.
4. The radiated sound pressure levels are determined with the assumptions as mentioned in table 1 for ceiling plenum and suspended ceiling absorption.
5. Lp values are including a room absorption of 10 dB/Oct.
6. DB(A), NC and NR index figures are sound pressure levels. Figures less than 20 are indicated by “- -”.
7. Δps is static pressure drop across VAV airvolume control terminal with damper fully open.
8. For non standard applications and/or selections, please contatct our technical staff.
HzDischarge dBRadiated dB
( )
( )
12552
250105
5002010
1K3015
2K3015
4K2520
Table 1 : Assumptions for additional attenuation
Changes w/o notice or obligation9
Rev 100422
Model100125160200250315355400
12598887777
250109988888
50011101099999
1K1312121111111111
2K1514141313131313
4K1514141313131313
HzdBdBdBdBdBdBdBdB
Table 2 Insertion Loss :
Sound data p = 250 Pa Δ
Compact VAV and CAV air volume control terminals
Type NCOCOOB
data refering toinlet spigot
air volume
minPs
. Δ
discharge sound
Lp values
radiated sound Lp values
Sound data p = 125 Pa Δ
Compact VAV and CAV air volume control terminals
Type NCOG. OB NCON. OB
1.
Sound data is determined in a reverberationroom at an independent sound laboratory, according to ISO3741 and ISO 5135 standards.
2. Lw in dB/Oct.(re 1pW) are sound power levels for discharge sound and case radiated sound. Figures less than 17 dB are indicated by “-”.
3. The discharge sound pressure levels are determined with the assumptions as mentioned in table 1 for downstream ductwork including a diffuser with insulated plenum box.
4. The radiated sound pressure levels are determined with the assumptions as mentioned in table 1 for ceiling plenum and suspended ceiling absorption.
5. Lp values are including a room absorption of 10 dB/Oct.
6. DB(A), NC and NR index figures are sound pressure levels. Figures less than 20 are indicated by “- -”.
7. Δps is static pressure drop across VAV airvolume control terminal with damper fully open.
8. For non standard applications and/or selections, please contatct our technical staff.
HzDischarge dBRadiated dB
( )
( )
12552
250105
5002010
1K3015
2K3015
4K2520
Table 1 : Assumptions for additional attenuation
Changes w/o notice or obligation10
Rev 100422
Model100125160200250315355400
12598887777
250109988888
50011101099999
1K1312121111111111
2K1514141313131313
4K1514141313131313
HzdBdBdBdBdBdBdBdB
Table 2 Insertion Loss :
data refering toinlet spigot
air volume
minPs
. Δ
discharge sound
Lp values
radiated sound Lp values
Model100125160200250315355400
12533222111
25044655443
50066
101010998
1K1111101011101010
2K1010101010101010
4K1212111110101010
HzdBdBdBdBdBdBdBdB
1.
Sound data is determined in a reverberationroom at an independent sound laboratory, according to ISO3741 and ISO 5135 standards.
2. Lw in dB/Oct.(re 1pW) are sound power levels for discharge sound and case radiated sound. Figures less than 17 dB are indicated by “-”.
3. The discharge sound pressure levels are determined with the assumptions as mentioned in table 1 for downstream ductwork including a diffuser with insulated plenum box.
4. The radiated sound pressure levels are determined with the assumptions as mentioned in table 1 for ceiling plenum and suspended ceiling absorption.
5. Lp values are including a room absorption of 10 dB/Oct.
6. DB(A), NC and NR index figures are sound pressure levels. Figures less than 20 are indicated by “- -”.
7. Δps is static pressure drop across VAV airvolume control terminal with damper fully open.
8. For non standard applications and/or selections, please contatct our technical staff.
HzDischarge dBRadiated dB
( )
( )
12552
250105
5002010
1K3015
2K3015
4K2520
Table 1 : Assumptions for additional attenuation
Changes w/o notice or obligation11
Rev 100422
Table 2 Insertion Loss :
Sound data p = 250 Pa Δ
Compact VAV and CAV air volume control terminals
Type NCOG OB NCON OB. .
data refering toinlet spigot
air volume
minPs
. Δ
discharge sound
Lp values
radiated sound Lp values
Model100125160200250315355400
1251312121111888
2501715151515111111
5002322222121212121
1K2625252424242424
2K2827272626262626
4K3029292828262626
HzdBdBdBdBdBdBdBdB
data refering toinlet spigot
air volume
minPs
. Δ
discharge sound
Lp values
radiated sound Lp values
Sound data p = 125 Pa Δ
Compact VAV and CAV air volume control terminals
Type NCOJ OB NCOQ OB. .
1.
Sound data is determined in a reverberationroom at an independent sound laboratory, according to ISO3741 and ISO 5135 standards.
2. Lw in dB/Oct.(re 1pW) are sound power levels for discharge sound and case radiated sound. Figures less than 17 dB are indicated by “-”.
3. The discharge sound pressure levels are determined with the assumptions as mentioned in table 1 for downstream ductwork including a diffuser with insulated plenum box.
4. The radiated sound pressure levels are determined with the assumptions as mentioned in table 1 for ceiling plenum and suspended ceiling absorption.
5. Lp values are including a room absorption of 10 dB/Oct.
6. DB(A), NC and NR index figures are sound pressure levels. Figures less than 20 are indicated by “- -”.
7. Δps is static pressure drop across VAV airvolume control terminal with damper fully open.
8. For non standard applications and/or selections, please contatct our technical staff.
HzDischarge dBRadiated dB
( )
( )
12552
250105
5002010
1K3015
2K3015
4K2520
Table 1 : Assumptions for additional attenuation
Changes w/o notice or obligation12
Rev 100422
Table 2 Insertion Loss :
Model100125160200250315355400
1251312121111888
2501715151515111111
5002322222121212121
1K2625252424242424
2K2827272626262626
4K3029292828262626
HzdBdBdBdBdBdBdBdB
1.
Sound data is determined in a reverberationroom at an independent sound laboratory, according to ISO3741 and ISO 5135 standards.
2. Lw in dB/Oct.(re 1pW) are sound power levels for discharge sound and case radiated sound. Figures less than 17 dB are indicated by “-”.
3. The discharge sound pressure levels are determined with the assumptions as mentioned in table 1 for downstream ductwork including a diffuser with insulated plenum box.
4. The radiated sound pressure levels are determined with the assumptions as mentioned in table 1 for ceiling plenum and suspended ceiling absorption.
5. Lp values are including a room absorption of 10 dB/Oct.
6. DB(A), NC and NR index figures are sound pressure levels. Figures less than 20 are indicated by “- -”.
7. Δps is static pressure drop across VAV airvolume control terminal with damper fully open.
8. For non standard applications and/or selections, please contatct our technical staff.
HzDischarge dBRadiated dB
( )
( )
12552
250105
5002010
1K3015
2K3015
4K2520
Table 1 : Assumptions for additional attenuation
Changes w/o notice or obligation13
Rev 100422
Table 2 Insertion Loss :
data refering toinlet spigot
air volume
minPs
. Δ
discharge sound
Lp values
radiated sound Lp values
Sound data p = 250 Pa Δ
Compact VAV and CAV air volume control terminals
Type NCOJ OB NCOQ OB. .
HC Barcol-Air
No 16 Changhong Road Fengxiang Industrial AreaDaliang Shunde Foshan Guangdong China P S 528300Tel 0757 22382867Fax 0757 22382857www.barcolair.netwww.barcolair.cn
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