Catalog Air curtain NAC

Transcription

1 Catalog NAC

2 NAC Model Description, areas of application and benefits Configuration Operation Selection table Installation and dimensions Control system Energy savings and return on investment Specifications Codification content Photo cover : NAC vertical installation Termont, Montréal NAD Klima All rights reserved C NAC

3 Description, areas of application and benefits NAC The NAC air curtain acts as a thermal barrier, considerably reducing energy costs while increasing the comfort level. The NAD Klima NAC air curtain is used primarily in industrial areas, warehouses as well as distribution and transshipment centers. The air curtain is installed either horizontally or vertically depending on the size of the garage door or installation conditions. Installation of the NAC air curtain ensures that hot or cool air is kept in the premises regardless of the frequency or duration of time that the doors are opened. Areas of application - Warehouses - Loading docks - Industrial areas - New or existing buildings - Distribution centers - Refrigerated warehouses - Shipping companies - Exhibition Centers - All buildings with garage doors Benefits - Promotes a more comfortable work environment - Prevents the loss of hot or cold air - Prevents the formation of ice close to the doors - Controls the infiltration of dust and insects - Energy savings - Easy to install and adaptable to all garage door structures - Compact and and lightweight - Low electricity consumption Certification ANSI/UL Std. 507 CAN/CSA Std. C22.2 No. 113 Subject to technical changes. Version 01 / 01 / NAC 1

4 Configuration Its frame is constructed from aluminum which is reinforced with steel panels. The fans are integrated into the steel panels. The noozles and the noozle plate are made of aluminium. Built to the client s needs and to meet the specifications of the occupied area, the air curtain is available for doors from 8 to 24 feet (2.5 to 7.3 m) in size with openings up to 30 feet (10 m) in height. The nozzles are slightly inclined towards the door, to improve the efficiency of the system. Small nozzles are inserted between the large nozzles to prevent the exfiltration of warm air outdoors. Powerful Rosenberg model fans allow the recirculation of hot air which is taken from the upper part of the building and propelled through the large and small nozzles. The air jets form a thermal barrier covering the entire surface of the door. Aluminum case Fan Protective grill Aluminium plate Aluminium nozzles NAC Subject to technical changes. Version 01 / 01 / 2016

5 Operation Operation of the NAC The integrated fans of the NAC air curtain recover interior ambient air from below the ceiling and propel it through the conical nozzles. This process creates a thermal barrier against the exterior air while allowing free movement of people and equipment. The air curtain consumes very little electricity, while still maintaining interior comfort. When using only one curtain (figure 1), the efficiency rating can be as high as 70%. When two curtains are used (ex. refrigerated warehouse) (figure 2), the efficiency rating can increase to as high as 90%. This combination of performances allow the air curtain to surpass all other conventionnal air curtains. Thermal photography of the thermal barrier of the NAC air curtain. - with 4 fans - Door dimensions : 12 feet X 14 feet Figure 1 Figure 2 Provide Preserve Cold air Warm air Heat Smoke Cool Dust Contaminates Cleanliness Insects Subject to technical changes. Version 01 / 01 / NAC 3

6 Table of selection Installation of horizontal air curtain with vertical flow Width of the door - ft. [m] 8 (2.4) 10 (3.05) 12 (3.66) Air flow [cfm] Number of fans [-] Motor voltage [V] Number of phases [~] Power / motor [kw] Current / motor [A] Current total [A] Weight [Kg/Lb] 60 / / / * For the 18 foot door widths (5.5 m) or more, the air curtain will supplied in two modules Height ft. [m] 8 to 9 (2.4 to 2.8) Air flow [cfm] Number of fans [-] Motor voltage [V] Number of phases [~] Power / motor [kw] Current / motor [A] Current total [A] Weight [Kg/Lb] 70 / / / 310 Width of the door - ft. [m] 12 (3.66) 14 (4.3) 16 (4.9) 18 (5.5)* 20 (6.1)* 22 (6.7)* 24 (7.3)* Air flow [cfm] Number of fans [-] Motor voltage [V] Number of phases [~] Power / motor [kw] Current / motor [A] Current total [A] Weight [Kg/Lb] 150 / / / 430 Airflow [cfm] Number of fans [-] Mototr voltage [V] Number of phase s [~] Power / motor [kw] Current / motor [A] Current total [A] Weight [Kg/Lb] 150 / / / / /540 Air flow [cfm] Number of fans [-] Motor voltage [V] Number of phases [~] Power / motor [kw] Current / motor [A] Current total [A] Weight [Kg/Lb] 170 / / / / / / / 690 For the vertical installation of the air curtain with a horizontal flow, the datas will be available upon request. 10 (3.05) Height ft. [m] 12 (3.66) 14 (4.3) 16 (4.9) NAC Subject to technical changes. Version 01 / 01 / 2016

7 Dimensions and installation Dimensions of horizontal air curtain with vertical jet of air Width of the door (C) Ft (m) Width of the curtain (W) Ft (m) (2,4) (3) (3.7) (4.3) (5) (5.5) H (6) (553 mm) (6.7) (7.3) / (2.62) (3.23) (3.84) (4.45) (5.05) (5.66) E (6.27) (253 mm) (6.88) (7.5) W E H H 3 1/2 (90mm) 12 (305 mm) C 3 1/2 (90 mm) Horizontal Installation The NAC air curtain is installed below the rails of the door, as shown in figures A and B. Its installation does not interfere with the opening or closing of the door. Ideally, the air curtain should be installed so the nozzles are level with the opening of the door (figure A and B). In the case where the clearence necessary is insufficient, the air curtain should be installed at the height lower than the opening. The door will have to be adjusted so it does a not open higher than the nozzles (figure C). An evaluation of feasibility will have to be done. The NAC air curtain is suspended at the four corners by threaded rods (not supplied) to the outside of the door frame. Threaded inserts (3/8 of an inch 9.5mm) are provided for this purpose located in the frame of the air curtain. Figure A - Installation under the rails Release of the door Figure B Figure C Vertical installation In the case of vertical installation of the air curtain, a floor mounting bracket is provided. Threaded inserts are provided on the air curtain for attachment to the bracket. Rod cover (optionnal) Threaded rod 3/8 (not supplied) Threaded inserts Subject to technical changes. Version 01 / 01 / NAC 5

8 M2 EN MARCHE M2 EN MARCHE MAN AUTO OFF ON M1 EN MARCHE M2 EN MARCHE M3 EN MARCHE M1 EN MARCHE M2 EN MARCHE MAN AUTO M3 EN MARCHE OFF ON NAD Klima Control system Selector The NAC air curtain is operated by a control panel. The panel is supplied by NAD Klima and has a selector switch with the options, MAN 0FF AUTO. When it is set to Manual mode, the air curtain will start and will only shut down when set to OFF. When set to AUTO mode, the air curtain starts automatically when the opening of the door is detected. Signal lights, one for each motor, identify which motors are operating. MAN - 0FF - AUTO OFF ON Wiring diagram with the MAN - OFF - AUTO selector on the control panel with the MAN - OFF - AUTO selector separated from the control panel (optional). Power supply Control pannel Power supply Installation au sol Automatic switch Control pannel Max. 3 Max. 3 Automatic switch Automatic control System The switch is compatible to most types of doors, for vertually universal installation. It is composed of two parts, one is the switch and the trigger magnet. Select the most appropriate location - Ensure there are no objects which could interfere with the operation of the system. - Place the magnet in an area where it cannot be used as a handle for opening or closing the door. Automatic switch Trigger magnet Install the switch A) Install the switch on the wall above the door or on the floor. It is important to select an area where the switch will not impede proper operation of the door. Install the trigger magnet B) Install the magnet a maximum of 3 inches (75mm) from the switch. Fix solidly to the door with the two screws supplied. The magnet can be fixed in different ways to the door. C) Connect the wires to the switch from the control panel and verify that the switch functions correctly. The control panel and the magnetized switch are supplied by the manufacturer. The electrical cable to the control panel, switch and the air curtain are supplied by the electrician NAC Subject to technical changes. Version 01 / 01 / 2016

9 Air Curtain Energy savings and return on investment 1. Data Province Québec Town Sherbrooke Exterior temperature in winter -4 F Interior temperature in winter 72 F Dimensions of the door Width 12 ft. Height 14 ft. Motor data Voltage 575 Volts Motor power 1,5 Hp number or necessary motors 4 - Total power of the motors 6 Hp Cost of the air curtain $ Energy cost 0,085 $/kwh Condition of use Hours per day 2 hours Days per week 5 days Weeks per year 24 weeks Total hours of use / year 240 hours / year 2. Power exchanged - without the air curtain Air infiltration due to the difference of temperature: Interior temperature close to the door 13,5 F Temperature difference interior/exterior 17,5 F Flow of incoming air cfm * Exchanged power Qo Btu/hr 3. Power exchanged - With the air curtain Interior temperature close to the door 55 F Temperature difference interior/exterior 59 F Reduction in exchange of heat 70 % Exchanged power QAC Btu/hr 4. Annual heating costs 4.1 Costs without Air Curtain $ Qo $ / year 4.2 Costs with Air Curtain $ QAC $ / year 5. Annual savings 5,1 Annual Savings ($Qo - QAC) $ / year 5,2 Return on investment (Payback) 2,3 year * 2009 ASHRAE Handbook Fundamentals - Chapter 16 Sanitech, Québec Subject to technical changes. Version 01 / 01 / NAC 7

10 Specifications 1. Description and physical characteristics 1.1 The air curtain shall be made of aluminium and steel. 1.2 The nozzles shall be slightly slanted towards the door. The incline and the configuration of the nozzles shall have to be adapted to the dimensions of the door. 1.3 The fans shall be offered in 115 volts or 230 volt single-phase current, and 230 or 575 volt three-phase current. 1.4 The air curtain shall be painted with a TGIC free polyester powder coat. It shall have a smooth surface for easy cleaning. The colour shall be chosen by the architect or the customer. 1.5 The air curtain shall be available vertical or horizontal installation. 2. Performances 3. Control 3.1 The air curtain shall be equiped with a magnetized switch (automatic opening/closing of the door) supplied by the manufacturer. 3.2 The control panel shall be equiped with a selection switch for manual, automatic or stop mode. 3.3 Optionnally, the air curtain shall be available with a variable speed drive. 4. Accreditation 4.1 The air curtain shall be approved accordind to the CSA C22.2 No113 Fans and Ventilators or ANSI/UL according to UL 507 Standard for Safety Electric Fans. 5. Quality required: NAD Klima, air curtain NAC 2.1 The air curtain shall provide a thermal wall allowing for energy savings of up to 70%. 2.2 The air jets shall reach the floor over the entire width of the air curtain with velocities superior to 500 ft / min. 2.3 The fans shall have a factor of protection (norm IP) against foreign object intrusion (minimum 5) and (minimum 4) IP54 water resistance. 2.4 The air curtain shall have an indicator light to confirm the operation of each of the fans. 2.5 Each fan shall be equiped with internal thermal protection, as well as protection against surcharges with a manual reinitialization NAC Subject to technical changes. Version 01 / 01 / 2018

11 Codification NAC H = Horizontal air curtain with vertical air discharge V = Vertical air curtain with horizontal air discharge 08(2.4m), 09(2.75m), 10(3m), 12(3.66m), 14(4.3m), 16(5m), 18*(5.5m), 20*(6m), 22*(6,7), 24*(7,3) * supplied in two modules Product Installation Width of the door : ft (m) 08(2.4m), 09( 2.75m), 10(3m), 12(3.66m), 14(4.3m), 16(5m), 18*(5.5m), 20*(6m), 22*(6.7m), 24*(7.3m), 26*(7.9m), 28*(8.5m), 30*(9.1m) * supplied in two modules or more on vertical installation 1151 = 115/120 1~ 2301 = 208/230 1~ 2303 = 208/230 3~ 6003 = 575/600 3~ D = With fan drive and rheostat X = Without fan drive 9003 = White Standard = RAL color * (indiquate the number of RAL color) X = Without support S = With support (for a vertical installation of the air curtain) Height of the door : ft (m) Voltage of motors Fan drive Color Vertical installation NAC - H X X Annotation : Example Horizontal installation Sanitech, Québec Subject to technical changes. Version 01 / 01 / NAC 9

12 NAD Klima 144, rue Léger, Sherbrooke (Québec), Canada J1L 1L9 T : F : info@nadklima.com NAD Klima Ontario 2840, Argentia Road, Unit 6, Mississauga (Ontario), Canada L5N 8G4 T : ontario@nadklima.com