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Accurex 470400, Installation, Operation And Maintenance Manual, Page: 6 / 36

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6

Ductwork

Electrical Connections

Access for wiring the hood control panel (when applicable) is provided by a junction box located on 
top of the hood when the control panel is mounted in the hood, or by the switch junction box when the 
control panel is mounted in the fire protection cabinet. The box is labeled “Control Voltage Wiring to 
Roof Top Fan Package”. Use minimum 14 AWG copper wire.

Standard light switches for remote mounting are rated for 15 amps and shall not have more than 14 
lights connected to them. Higher amperage switches are available upon special request.

Exhaust

As specified in NFPA 96, Ch. 7.5 (latest edition), exhaust duct systems must be constructed in the 
following manner: 

Materials

. Ducts shall be constructed of and supported by carbon steel not less than 1.37 mm 

(0.054 in.) (No. 16 MSG) in thickness or stainless steel not less than 1.09 mm (0.043 in.) (No. 18 MSG) in 
thickness.

Installation.

 All seams, joints, penetrations, and duct-to-hood collar connections shall have a 

liquid-tight continuous external weld.

Supply

Supply ductwork (where applicable) should be connected to the hood in a manner approved by the 
local code authorities.

Note: For hoods with fire dampers in the exhaust and supply duct collars, an access panel for cleaning 
and inspection shall be provided in the duct. This panel shall be as close to the hood as possible but 
should not exceed 18 in. (45.7 cm).

For proper installation of duct collars when they are shipped unattached, see page 14

External Supply 

Plenum Type

Weight

Width

Height

Length per 

section

Recommended

Supply Rate 

(lbs/ft)

(kg/ft)

(in)

(mm)

(in)

(mm)

(ft)

(m)

Back Supply

35.0

15.878

6

15.4

Variable

Variable

3 to 16

.91 to 

4.88

145 cfm/ft

(46.36 m

3

/hr)

Air CurtainSupply 
  • 14 inch

9.5

4.31

14

355.6

10

54

3 to 16

.91 to 

4.88

110 cfm/ft

(186.89 m

3

/hr)

Air Curtain Supply 
  • 4 inch

1.5

5.67

4

609.6

10

54

3 to 16

.91 to 

4.88

145 cfm/ft

(46.36 m

3

/hr)

Variable Supply

16.0

7.6

1

304.8

18

457.0

3 to 16

.91 to 

4.88

face

80-160 cfm/ft

(135.9 -71.84 m

3

/hr)

Horizontal Supply

14.0

6.35

1

304.8

18

457.0

3 to 16

.91 to 

4.88

150 cfm/ft

(54.85 m

3

/hr)

External Supply Plenum Weights, Dimensions, and Supply Rates

Summary of Contents for 470400

Page 1: ...___________ Model _______________________ Mark __________________ Serial ________________________ Model _______________________ Mark __________________ Serial ________________________ Model _______________________ Mark __________________ PN 470400 Model Proximity Backshelf Kitchen Hood Please read and save these instructions for future reference Read carefully before attempting to assemble install...

Page 2: ...9 Enclosure Panel Installation Instructions 10 12 Backsplash Panel Installation Instructions 13 Duct Collar Installation Instructions 14 Exhaust Air Balancing Baffle EABB 15 Balancing the Kitchen Exhaust 16 Baffle Filters XB Series 16 19 High Velocity Cartridge Filters XK Series 20 21 High Efficiency Filters XX Series 23 Fire Suppression Wiring Diagrams 24 25 Overall Wiring Plan View 26 Wiring for...

Page 3: ...column B in the Hood Weight equation where shown and solve for the total Hood Weight Receiving and Handling Hood Weights IMPERIAL A B Category 1 Hood Width in 23 25 1 3 28 26 28 1 35 30 29 32 1 4 31 5 33 36 1 45 33 5 Category 2 Filter Type Baffle 0 3 0 XX or Cartridge 0 4 0 Grease Grabber 1 0 Category 3 Hood Height in 24 27 0 0 28 33 0 08 5 34 38 0 16 10 39 42 0 24 15 METRIC A B Category 1 Hood Wi...

Page 4: ... Top Hood Back Backshelf Bottom Filler Panel 5 16 x 3 4 in 8 x 19 mm Bolts with Washers and Nuts Hood Front Hood Front If a Back Supply Plenum is provided install first Before raising hood insert 1 2 in 12 7 mm diameter threaded rod by others into hanger brackets on hood top Check the engineering drawings or UL label located on the inside of the hood for proper hood height above finished floor Ins...

Page 5: ...l Installation Instructions End Filler Panels Fig 3 The hood hanging height is critical hanging the hood at the incorrect height may significantly reduce the ability for the hood to function properly and may be in violation of codes The hood hanging height is given on the UL label located on the inside of the hood on the end panel The distance given is from the front lip of the hood shown in Fig 4...

Page 6: ...ctions shall have a liquid tight continuous external weld Supply Supply ductwork where applicable should be connected to the hood in a manner approved by the local code authorities Note For hoods with fire dampers in the exhaust and supply duct collars an access panel for cleaning and inspection shall be provided in the duct This panel shall be as close to the hood as possible but should not excee...

Page 7: ...d bolt to enclosures through back of plenum Fig 8 This will draw plenum tight to the enclosures Fasteners are not intended to support the plenum for alignment purposes only 4 Caulk mating joints with NSF Approved silicone caulk GE SCS1009 or its equivalent The caulk is not provided The purpose of the external supply plenum is to provide make up air to an exhaust hood to maintain the air balance in...

Page 8: ... The Back Supply Plenum needs to be mounted 31 25 in 79 375 cm above the finished floor This is measured from the lowest rear edge of the Back Supply Plenum to the finished floor 6 Fasten the Back Supply to the wall going through the lower Back Supply wall Fig 12 Installing the Supply Duct Collar 1 Find the center of the Back Supply Plenum 2 If the Back Supply Plenum is less than 9 ft 10 in 299 72...

Page 9: ...l the hood Hood Mounting Instructions Hanging the Hood with Back Supply Plenum Before hanging the hood according to the hood installation instructions please check the following 1 Make sure the back supply unit is properly secured as described in steps 5 and 6 page 8 2 Any filler panels should be attached to the hood before the hood installation To hang the hood 1 Lift the hood and position it so ...

Page 10: ...l s on the hood and bolt to the end enclosure panels with the 5 16 in bolts provided 4 Tack weld or clamp the front enclosure panel s to the standing seam If clamps are used they must be positioned 4 in 100 mm from the ends and in the center of the front enclosure panel 5 To allow for ease of cleaning caulk the external seams with NSF Approved silicone caulk GE SCS1009 or its equivalent The caulk ...

Page 11: ...vided 3 Position the front enclosure panel s on the hood and bolt to the end enclosure panels with the 5 16 in bolts provided 4 Tack weld or clamp the front enclosure panel s to the hood If clamps are used they must be positioned 4 in 100 mm from the ends and in the center of the front enclosure panel 5 To allow for ease of cleaning caulk the external seams with NSF Approved silicone caulk GE SCS1...

Page 12: ...Bolt front and end enclosure panels together with the 5 16 in bolts provided in the hardware package 4 Place enclosure assembly on hood top tack weld shelf to hood in rear corners 5 Attach the end enclosure panels to mounting channels fasteners provided 6 To allow for ease of cleaning caulk the external seams with NSF Approved silicone caulk GE SCS1009 or its equivalent The caulk is not provided 7...

Page 13: ...sitioned drill holes in the panel and fasten to the wall fasteners provided by others 4 Caulk the joints between the hood and the backsplash panel with NSF Approved silicone caulk GE SCS1009 or its equivalent The caulk is not provided When multiple panels are required caulk the joint between the backsplash panels with NSF approved silicone caulk GE SCS1009 or its equivalent The caulk is not provid...

Page 14: ...duct connection is to be a continuous liquid tight weld Supply Ducts Proximity hoods do not have integral supply plenums Reference External Supply Plenums Page 7 FRONT OF HOOD HANGER BRACKET EXHAUST PLENUM DUCT CUT OUT AREA x y The final fire system hook up must be completed at this time Unobstructed access is required for the fire system installer to make plumbing connections to various locations...

Page 15: ...elocity 2 After the range for each hood is calculated it should be compared to the hood with the highest static pressure If the highest hood falls inside of the range then the hoods can be balanced with the EABB If it is higher than the range the hoods cannot be balanced Example 1 Hood 1 Ps 0 58 in wg Duct Velocity 1900 FPM Hood 2 Ps 0 44 in wg Duct Velocity 1800 FPM Hood 2 has the lower Ps at 180...

Page 16: ... could be drawn from the kitchen to the dining area Therefore exhaust or supply air should be adjusted to provide a slight positive pressure in the dining area B To determine proper kitchen air balance 1 Refer to engineering drawings to determine total exhaust from the kitchen area Exhaust hoods dishwasher hoods etc 2 Determine total CFM of make up air supplied to kitchen area Make up air hoods he...

Page 17: ...mes x x x x x 2 in H 4 H 2 H 4 H Airflow Rotating Vane Anemometer Fig 22 255 4663 44 m h 248 4535 42 m h 256 4681 73 m h 240 4389 12 m h 250 4572 m h Nominal Filter Size H x L Imperial Conversion Factor Metric Conversion Factor Inches Millimeters 16 x 16 400 x 400 1 63 157 16 x 20 500 x 400 2 13 198 20 x 16 400 x 500 1 90 177 20 x 20 500 x 500 2 48 230 Total hood volume Filter 1 Volume Filter 2 Vo...

Page 18: ...g Velocity Length m Height m 0 72 5 Calculate the system s volume by repeating the process for the remaining panels and adding the individual panel volumes together Total system volume Panel 1 Volume Panel 2 Volume Panel 3 Volume 606 4 614 3 593 8 1814 5 cfm 1029 1044 1009 3082 m3 hr Example Face Supply Hood with three 28 in 711 m Perforated Panels Measured velocities in FPM for one perforated pan...

Page 19: ...e hood 4 Calculate the total hood s volumetric flow rate by summing the flow rate of each individual filter in the hood 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 may cause error Fig 23 Example Measured velocities for 20 x 20 filter 185 and 189 fpm Average Velocity Sum of Velocity Readi...

Page 20: ...d in the following table 5 Calculate the hood s exhaust volume by multiplying the CFM per linear foot by the length of hood 1 4 Width 1 4 Width 1 2 Width 1 2 Inle Fig 28 Cartridge Filter Size Imperial Conversion Factor Metric Conversion Factor 16 in 400 mm high with 4 in 100 mm high inlet 1 63 1 ft3 5 35 1 m3 20 in 500 mm high with 4 in 100 mm high inlet 2 15 1 ft3 7 05 1 m3 16 in 400 mm high with...

Page 21: ...nings The conversion factor takes this into account Position the grid over each filter as shown Take velocity readings for each filter 3 Calculate each filter s volumetric flow rate by summing the flow rate of each individual filter in the hood 4 Calculate the total hood s volumetric flow rate by summing the flow rate of each individual filter in the hood Note For best accuracy multiply the veloci...

Page 22: ... Rotat Anem 1 2 Width 1 4 Width 1 4 Width 1 2 Height Fig 31 22 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 fpm repeat for each filter For a nominal filter size of 20 x 20 the conversion factor is 1 65 Volume for Filter 1...

Page 23: ... 35 Average the two measurements For 16 in 400 mm high filters position the grid as shown in Fig 36 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 by summing the flow rate of each individual filter in the hood 4 Calculate the total hood s vo...

Page 24: ...TCH IN NORMAL INSTALLATION THE YELLOW WIRE IS TO BE USED ONLY FOR EXTINGUISHER ALARM LIGHTS CIRCUITS ETC L1 L2 PUSHBUTTON SWITCH 120V 60HZ K1 Ka K1b CURRENT DRAW MAX 8A RESISTIVE 8A INDUCTIVE 120VAC 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 TEMPERATURE RATING...

Page 25: ...n Four typical examples shown Power to cooking equipment Shunt Trip Breaker 120 VAC N Input NO 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 Power to Fan s Fan Starter Terminal strip in Waterwash Control Panel NO NC 3 4 5 6 NO NC 120 VAC N Inpu...

Page 26: ...ION BOX ON HOOD FOR HOOD LIGHTS JUNCTION BOX ON TOP OF HOOD FOR FIELD CONNECTION OF SUPPLY POWER TWO 2 CONTROL WIRES FROM ANSUL SNAP ACTION SWITCH TO MOTOR CONTROLS AREA ELECTRICAL CONTRACTOR TO PROVIDE HANDIBOX ON SIDE OF AUTOMAN ANSUL AUTOMAN IS NOT AN ELECTRICAL RATED BOX NO CONNECTIONS INSIDE FIVE 5 CONTROL WIRES FROM SWITCH JUNCTION BOX ON HOOD TO MAKE UP AIR CONTROL CENTER CONTROL CENTER MAK...

Page 27: ...FAN SUP STR CONTROL 115VOLT N H STR FAN EXH CTRL SUP HTR SUP FAN OPTIONAL OL FSC1 LIGHT SWITCH EXHAUST SUPPLY SWITCH HEATER SWITCH LIGHT SWITCH EXHAUST SWITCH SUPPLY SWITCH HEATER SWITCH HOOD SWITCH PANEL DETAIL THE DIAGRAMS BELOW SHOW A TYPICAL HOOD SWITCH PANEL REMOTE MOUNTED FOR HOOD MOUNTED SWITCHES REFER TO THE WIRING CONNECTION DECAL ON THE COVER OF THE JUNCTION BOX ON THE HOOD TOP Wiring fo...

Page 28: ... may require more frequent cleaning 2 Before replacing filters clean the interior plenum surfaces of any residual grease accumulations Periodic Maintenance Stainless steel hood exterior surfaces should be cleaned with a mild detergent and then polished with a good grade stainless steel polish to preserve the original luster Note Never use abrasive cleaners or chemicals on hood surfaces Never use c...

Page 29: ...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 set the filter into the channel Fig 42 4 Slide the filter to one end of the hood and repeat until all the filters are installed Make sure the filters are placed tightly together with no visible gaps 5 Latch filters together by connecting hooks to handle on next fi...

Page 30: ...ash 3 to 4 filters each day cycling all of the filters in three days Note The beads will discolor Standard cooking will turn the beads yellow in color Open flame cooking will cause the beads to blacken Neither affects the performance of the filters Periodic Inspection Each filter may be soaked in hot soapy water for two hours once a month prior to washing if grease build up is found Inspect the fi...

Page 31: ... 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 min then scrub with scour pad and bottle brush Fryer Every 2 days 1 Hour Daily Soak 5 min then scrub with scour pad and ...

Page 32: ...ck to see if there is a strong draft through an open door Check make up air unit increase make up air make up air should be evenly distributed throughout the kitchen 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 ...

Page 33: ... air curtain heat the supply air Is the make up air part of the hood or an attached plenum Try turning off or reducing the amount of make up air heat the supply air Problem The kitchen gets hot Is the hood capturing Hood is not drawing enough air see sections above on fan performance and hood capture Is this an air curtain hood Turn off or reduce the amount of air supplied to the air curtain Is th...

Page 34: ...6 SS Baffle Filters 457629 16x20 SS Baffle Filters 851656 16x16 High Velocity Cartridge Filters 851657 16x20 High Velocity Cartridge Filters 851709 16x16 Grease X Tractor Filters 851710 16x20 Grease X Tractor Filters 852388 16x16 Grease Grabber Filters 852389 16x20 Grease Grabber Filters 850551 Lights Only 851776 Fans Only 851777 Lights and Fan 2 switches 851778 Fan and Heat 2 switches 851779 Exha...

Page 35: ...__________ _________________________________________________ _________________________________________________ Date___________________ Time______________ AM PM Notes ___________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ ________________________________________...

Page 36: ... to our factory transportation prepaid Motors are warranted by the motor manufacturer for a period of one year Should motors furnished by Accurex prove defective during this period they should be returned to the nearest authorized motor service station Accurex will not be responsible for any removal or installation costs As a result of our commitment to continuous improvement Accurex reserves the ...

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