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Accurex XBEW, Инструкция по установке, эксплуатации и обслуживанию

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Accurex XBEW Скачать руководство пользователя страница 21

Kitchen Hoods • Type I and Type II

21

Perforated Face Supply or External Supply 
Plenum - Shortridge VelGrid Method

1.  Hood set up.
  Turn on both exhaust and supply air. If the make-up 

air unit has temperature control, it should be used to 
keep the supply air at the desired room discharge air 
temperature.

2.  Measure velocities.
  Take two velocity readings on the first perforated 

panel on the supply plenum. Center the VelGrid 
along the width and 2 in. (50.8 mm) from each end 
of the perforated panel as shown in Fig. 19. Take the 
average of these two values and record.

3.  Measure the length and width of the perforated 

panel.

Total system volume =

(Panel 1 Volume) + (Panel 2 Volume) + (Panel 3 Volume)

(Imperial)

=

370.8

+

373.1

+

369.0

=

1112.9 cfm

(Metric)

=

630.9

+

633.9

+

626.9

= 1891.7 m

3

/hr

Measure length and width of perforated panel.   24 inches (.610 m) long by 12 inches (.305 m) wide

Volume for one panel = Conversion Factor x

Average Velocity

x Length x Width

(Imperial)

=

0.005

x

257.5 ft/min.

x

24

x

12

=

370.8 cfm

(Metric)

=

0.72

x

4709.5 m/hr

x

.610

x

.305

= 630.9 m

3

/hr

Example:  Air supply plenum with three 24 inch (.610 m) by 12 inch (.305 m) perforated panels

Measured velocities in ft/min. for one perforated panel

Average Velocity

=

Sum of Velocity Readings

Number of Readings

(Imperial)

=

256 + 259

2

=

257.5 ft/min.

(Metric)

=

4682 + 4737

2

= 4709.5 m/hr

FIGURE 6.3  VELGRID ASSEMBLY

Edge of outlet/inlet
active face area

Maintain 1½ inch 
(38.1 mm) margin

Maintain 1½ inch 
(38.1 mm) margin

Place standoff spacers against 
face of outlet or inlet grill, 
filter, coil, etc.

Tubing harness

Neckstrap

External read jack

Extension rods

Swivel bracket

Tubing connectors

Pushbutton handle and plug

Handle bracket

Captive knob screws

Pressure input ports

2.0 inches

(50.8 mm)

2.0 inches

(50.8 mm)

Center of 

Perforated

Panel 

(Width)

Length of Perforated Panel

Fig. 19

4.   Calculate the perforated panel volume using the 

following formula:

 CFM 

= avg. velocity x length (in.) x width (in.) x 0.005

m

3

/hr

 = avg. velocity x length (m) x width (m) x 0.72

5.  Calculate the system’s volume by repeating the 

process for the remaining perforated panels and 
adding the individual panel volumes together.

Содержание XBEW

Страница 1: ... engineer before moving forward General Safety Information DANGER Always disconnect power before working on or near any electrical components in the hood Lock and tag the disconnect switch or breaker to prevent accidental power up NOTE Follow all local electrical and safety codes as well as the National Electrical Code NEC and the latest edition of the National Fire Protection Agency Standard for ...

Страница 2: ...mosphere that is sealed from the elements While in storage inspect equipment routinely If any moisture dirt or other accumulations are found on the hood or any of the parts the source should be located and eliminated Removing from Storage As equipment is removed from storage to be installed in their final location it should be protected and maintained as outlined in the Handling section above Tabl...

Страница 3: ... lbs ft 64 lbs 37 lbs ft 51 kg 43 kg m 57 kg 45 kg m 63 kg 46 kg m 68 kg 48 kg m 74 kg 49 kg m 76 kg 51 kg m 82 kg 52 kg m 88 kg 54 kg m 95 kg 55 kg m XGDW 34 lbs 37 lbs ft 38 lbs 38 lbs ft 42 lbs 39 lbs ft 46 lbs 40 lbs ft 50 lbs 41 lbs ft 51 lbs 42 lbs ft 55 lbs 43 lbs ft 59 lbs 44 lbs ft 64 lbs 46 lbs ft 51 kg 55 kg m 57 kg 57 kg m 63 kg 58 kg m 68 kg 60 kg m 74 kg 61 kg m 76 kg 63 kg m 82 kg 6...

Страница 4: ...3 28 13 62 13 95 Hood Model Base Weight and Weight per Length based on Hood Depth 23 to 25 in 584 to 635 m 26 to 28 in 660 to 711 m 29 to 32 in 737 to 813 m 33 to 36 in 838 to 914 m XB XX XGEP Base Weight 28 lbs 12 70 kg 30 lbs 13 61 kg 31 5 lbs 14 29 kg 33 5 lbs 15 20 kg Weight Per Length 20 4 lbs ft 30 36 kg m 21 lbs ft 31 25 kg m 21 6 lbs ft 32 14 kg m 22 2 lbs ft 33 04 kg m Hood weight calcula...

Страница 5: ...all them now See page 7 Filler Panel Installation Filler panels may be integral to the hood which requires no additional installation 2 If the hood is equipped with Clearance Reduction Methods refer to pages 7 and 8 for special considerations with hanging the hood 3 If the hood is provided with hood duct sensors or thermostats install them now See the Installation and Operations guide provided wit...

Страница 6: ...stallation the certified fire system installer should be contacted at this time to complete the final hookups testing and system certification based upon manufacturer s specification and local fire codes If the hood is not provided with either pre piping only or no fire suppression system it is the responsibility of a certified fire system installer to install test and certify the system based upo...

Страница 7: ...in 7 62 cm clearance to limited combustible materials per NFPA 96 if constructed in one of the following methods 3 in 7 62 cm rear uninsulated stand off 3 in 7 62 cm top enclosure panel system 3 in 7 62 cm end uninsulated stand off Top Clearance Reduction Options One inch 2 54 cm layer of insulation installed on top of the hood optional meets zero inch requirements for clearance to combustible sur...

Страница 8: ...e weld with a non ferrous filler wire such as silicon bronze or stainless steel filler wire Protect all stainless steel areas from weld splatter Back and Front Clearance Reduction Options One inch 2 54 cm layer of insulation in 3 in 7 62 cm back stand off meets zero inch requirements for clearance to combustible surfaces as outlined under the clearance reduction methods Three inches 7 62 cm uninsu...

Страница 9: ...es provided for support during shipping on the open end panels Install and level both hoods 2 After leveling secure the hoods together by tack welding and or bolting the angles that are located at the top of the hoods along its width Fig 5 3 Next fasten the hoods together at its inside plenum profile using u clips and bolts Fig 6 Caulk this joint with NSF Approved silicone caulk GE SCS1009 or its ...

Страница 10: ...ening fastening with tack welds at 1 to 2 in 2 54 to 5 08 cm intervals or sheet metal screws at 3 to 6 in 7 62 to 15 24 cm intervals It is suggested that the duct collar be attached to the supply plenum before installing the supply plenum 2 The external supply plenum should be resting lightly against the hood The hood is only used to position the plenum it is not intended to support the plenum All...

Страница 11: ...hen panel height is 66 inches 1676 4 mm or 80 inches 2032 mm NOTE Panels up to 45 in 1143 mm wide ship in one piece over 45 in 1143 mm in multiple pieces 1 After hood is hung into position slide the flat flange of the backsplash panel behind the back of the hood If the hood is provided with flat backsplash panels divider bars will be provided Install divider bars between panels as shown in the fla...

Страница 12: ...iring should not come in contact with the surface of the hood 115VAC HOT 115VAC NEUTRAL GROUND BLACK WHITE GREEN BLACK WHITE GREEN FIRST HOOD LIGHT LIGHT QTY BASED ON CONFIGURATION ALL WIRING CONNECTIONS MUST BE MADE WITH WIRE NUTS OR WIRE LEVERS INSIDE LIGHT J BOX OR LIGHT FIXTURE SECOND HOOD LIGHT LAST HOOD LIGHT Hood Light Fan and or Thermal Tempering Switches If the hood is provided with hood ...

Страница 13: ... provided in the hardware package 4 Tack weld or clamp the front enclosure panel s to the hood If clamps are used they must be positioned 4 in 10 16 cm from the ends and in the center of the front enclosure panel If hood is provided with supply plenums the front enclosure panel should be tack welded or use self tapping screws on the inside of the front panel to secure the panel in place to the ASP...

Страница 14: ... Proximity Backshelf Hoods Double Island Canopy Style Hoods NOTE Before hanging the hoods please verify the hood marks to ensure the correct hood is hung on the correct side A double island hood is created by installing two wall style hoods back to back Use the installation procedure described for single island canopy hoods install and level both hoods After leveling secure the hoods together by t...

Страница 15: ...n wg NOTE The airflow rates were established under controlled laboratory conditions NOTE Greater exhaust and or lesser supply air may be required for complete vapor and smoke control in specific installations To determine the proper dining room air balance 1 Refer to engineering drawings to determine total exhaust CFM from dining areas exhaust fans heating and air conditioning units rest rooms etc...

Страница 16: ... m h 250 4572 m h Measure and record the velocity of each location A digital 2 75 in 69 85 mm rotating vane anemometer or equivalent is suggested The center of the anemometer should be held 2 in 50 8 mm from the face of the filters It is helpful to make a bracket to keep Calculate the average velocity for the filter 3 Determine the filter s conversion factor from the table 4 Calculate the filter s...

Страница 17: ... average velocity by the conversion factor to obtain the volumetric flow rate for each filter 4 Calculate the hood s total volumetric flow rate by summing the volumetric flow rate of each individual filter in the hood as calculated in Step 3 NOTE For best accuracy multiply the velocity of each filter by its conversion factor and sum the flow rates Averaging the velocity measured for all filters ma...

Страница 18: ... m2 20 x 20 500 x 500 1 65 ft2 153 m2 Rotating Vane Anemometer 1 2 Width 1 4 Width 1 4 Width 1 2 Height Fig 14 Filter 1 225 201 187 210 238 197 Filter 2 228 222 226 237 240 220 Filter 3 230 245 240 250 223 219 Filter 4 225 265 219 245 221 200 Average slot velocity for Filter 1 Sum of Velocity Readings Number of Readings 1258 6 209 7 ft min repeat for each filter For a nominal filter size of 20 x 2...

Страница 19: ... and 17 Average the two measurements For 16 in 400 mm high filters position the grid as shown in Fig 18 For 20 in 500 mm wide filters position the grid over the left and right side of the filter Average the two measurements Take velocity readings for each filter 3 Calculate each filter s volumetric flow rate as follows Calculate each filter s average velocity by summing the velocity readings and d...

Страница 20: ... 260 Filter Readings m hr 4755 4572 4663 4755 4572 4663 4846 4938 5029 4938 5121 4846 4846 4938 5304 5212 5121 5121 5029 5304 5395 5212 5029 5121 4755 4938 4846 4755 Total system volume Panel 1 Volume Panel 2 Volume Panel 3 Volume Imperial 606 4 614 3 593 8 1814 5 cfm Metric 1029 1044 1009 3082 m3 hr Measure length and height 28 inches 711 m long perforated panel by 16 inches 406 m high Volume for...

Страница 21: ... 5 ft min x 24 x 12 370 8 cfm Metric 0 72 x 4709 5 m hr x 610 x 305 630 9 m3 hr Example Air supply plenum with three 24 inch 610 m by 12 inch 305 m perforated panels Measured velocities in ft min for one perforated panel Average Velocity Sum of Velocity Readings Number of Readings Imperial 256 259 2 257 5 ft min Metric 4682 4737 2 4709 5 m hr FIGURE 6 3 VELGRID ASSEMBLY Edge of outlet inlet active...

Страница 22: ...od 2 has the lower Ps at 1800 ft min the maximum increase in Ps is 1 17 The range for Hood 2 is 0 44 to 1 61 Hood 1 is less than 1 61 so these hoods can be balanced Example 2 Hood 3 Ps 2 00 in wg Duct Velocity 2000 ft min Hood 4 Ps 0 44 in wg Duct Velocity 1500 ft min Hood 4 has the lower Ps at 1500 ft min the maximum increase in Ps is 81 The range for Hood 4 is 0 44 to 1 25 Hood 3 is higher than ...

Страница 23: ... ON MICROSWITCH IN NORMAL INSTALLATION THE YELLOW WIRE IS TO BE USED ONLY FOR EXTINGUISHER ALARM LIGHTS CIRCUITS ETC L1 L2 PUSHBUTTON SWITCH 115V 60HZ K1 Ka K1b CURRENT DRAW MAX 8A RESISTIVE 8A INDUCTIVE 115VAC NOTES 1 DENOTES FIELD INSTALLATION 2 DENOTES FACTORY INSTALLATION 3 GAS VALVE UL LISTED ELECTRICALLY OPERATED SAFETY VALVE FOR NATURAL OR LP GAS AS NEEDED OF APPROPRIATE PRESSURE AND TEMPER...

Страница 24: ... NC Electric gas valve If reset relay is used see option A or B at right Mechanical gas shut off valve does not require electrical connection NO NC NO Input NC Voltage Free Contacts for Building Alarm s NO NC 115 VAC N Input Power to fan s Fan Starter Manual Switch If prohibited by local codes do not shut down exhaust fans with this method of wiring Note 1 Denotes field installation 2 Denotes fact...

Страница 25: ...IT BREAKER FOR EXHAUST AND MUA FANS FROM 115VAC 15A CIRCUIT BREAKER FOR CONTROLS LIGHTS TYPICAL EXHAUST FAN M3 24VAC MUA CONTROL WIRE Fan power feeds to be field wired to respective exhaust starters located in MUA control center FIELD WIRING FACTORY WIRING UDS M KC Motor Kitchen Controls LABEL DESCRIPTION Utility Distribution System TO APPLIANCE SHUNT TRIP BREAKER OPTIONAL TO ELECTRIC GAS VALVE RE...

Страница 26: ...TEM CONTROL M3 M2 Typical Light and Fan Switch Locations Typical Light and Fan Switch Locations A FCC B Utility Cabinet C Wall Shipped Loose D UDS E Hood A FCC B Utility Cabinet C Wall Shipped Loose D UDS E Hood CONTROL WIRE respective exhaust starters located in MUA control center FIELD WIRING FACTORY WIRING UDS FCC Motor Auto Fan Control Center LABEL DESCRIPTION Utility Distribution System FIELD...

Страница 27: ...tainless steel polish to preserve the original luster Note Never use abrasive cleaners or chemicals on hood surfaces Never use chlorine based cleaners or iron wool pads to clean the hood They may scratch or mar the material Always rub with the grain of the stainless 3 To maintain optimum performance of your hood and fan duct cleaning should be performed as often as the application and code require...

Страница 28: ...filter up 2A Pull bottom of filter towards yourself 2B Pull filter down 2C 1A 1B 1C Grease Grabber filters second row of filters 3A 3B Whirlpool sink method Dishwasher method Grease X Tractor filters first row of filters 2 Lifting the lower edge of the filter past the grease trough continue to push the top of the filter into the channel 3 When the filter is even with the bottom rear filter channel...

Страница 29: ... 3 days 15 minutes Daily 5 minutes Fryer Weekly 15 minutes Twice a week 5 minutes Charbroiler Daily 25 minutes Daily 10 minutes Wok Daily 25 minutes Daily 10 minutes 5 Pot Sink with Heater Rinse with sprayer after soaking 180º F Griddle Pot Pan Detergent and or Degreaser Every 2 days 1 hour Daily Soak 10 minutes then scrub with scour pad and bottle brush Fryer Every 2 days 1 hour Daily Soak 5 minu...

Страница 30: ... Does the current cooking equipment match the original design Adjust or replace fan to match the cooking equipment load Are there multiple hoods on one fan One hood may be over exhausting and the other hood not drawing enough Restrict second hood to help problem hood Are there closed dampers in the duct Open dampers Is the ductwork complex or too small Change to a higher static fan modify the duct...

Страница 31: ...tchen increase exhaust air through hood Problem Grease is running off the hood Is there grease on top of the hood Exhaust duct is not correctly welded Is the caulk missing or damaged Clean problem area and recaulk Is the grease cup inserted properly Put grease cup back in place Problem Hood is noisy Is the fan running in the correct direction See exhaust fan troubleshooting section Are the filters...

Страница 32: ...Filter REGISTERS Part Number Description 452700 24 x 8 Aluminum Single Deflection H OB 452701 36 x 8 Aluminum Single Deflection H OB 452702 36 x 8 Aluminum Single Deflection H OB 452703 44 x 8 Aluminum Single Deflection H OB 453796 24 x 12 Aluminum Single Deflection H OB 453797 36 x 12 Aluminum Single Deflection H OB 453798 38 x 12 Aluminum Single Deflection H OB 453799 44 x 12 Aluminum Single Def...

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