Friedrich SH15, SH20 User Manual

Installation & Operation Manual

Hazardous Duty Room Air Conditioner

230-Volt: SH15 | SH20

920-024-05 (12-04)

Table of Contents

Operation and Care Instructions

General Instructions ............................................................................................................................................................................ 3

Filter Information ................................................................................................................................................................................ 4

Maintenance Checklist ........................................................................................................................................................................ 4

Special Features .................................................................................................................................................................................. 5

Control Panel ..................................................................................................................................................................................... 6

Underwriters Laboratories .................................................................................................................................................................. 6

Installation Instructions

Electrical Requirements ..................................................................................................................................................................... 7

Unpacking the Unit ............................................................................................................................................................................. 9

Chassis Wiring and Preparation ........................................................................................................................................................ 9

Shell Preparation .............................................................................................................................................................................. 10

Shell Installation ................................................................................................................................................................................ 11

Sash Window ............................................................................................................................................................................ 11

Through-the -Wall ........................................................................................................................................................................14

Chassis Installation ............................................................................................................................................................................ 17

WARRANTY ................................................................................................................................................................................... 19

920-024-05 (12-04)

Welcome to years of economical comfort with your new Friedrich Hazardgard Room air conditioner

General Instructions

Your new Friedrich has been carefully engineered and manufactured to give you many years of dependable, efﬁ cient operation, maintaining a comfortable temperature and humidity level. Many extra features have been built into your unit to assure quiet operation, the greatest circulation of cool, dry air, and the most economic operation.

Here are some suggestions to help you use your new Friedrich most efﬁ ciently:

1. Carefully read and follow the installation instructions.

2. Your Friedrich Hazardgard room air conditioner is electrically grounded for your safety. The power supply must also b e grounded and must b e insta lled in acco rdance with NEC Article 501. The branch circuit rating is shown on the nameplate for each model.

3. Make sure the unit is the right capacity for the area to be cooled. Too little capacity makes the unit work too hard, using more electricity than needed and increasing wear. Too muc h capac ity i s als o hard on the u nit a s it w ill c ycle on and off too rapidly, and cannot control humidity as well.

4. When you ﬁ rst turn on your Friedrich, set the thermostat to its coldest position to cool the room. When the desired temperature is reached, turn the thermostat control toward the "warmer" position until you hear a click and the compressor goes off. The thermostat will then cycle the compressor to maintain the selected temperature.

5. Clean the ﬁ lter frequently (See General Maintenance).

6. Do not block the air ﬂ ow to and from the unit. Make sure the louvers are directed to give even distribution of air

throughout the room. Caution: If air is directed into a restricted area such as behind a bed or into a corner, this may cause the unit to cycle on and off rapidly, which could damage your unit.

7. A dirty ﬁ lter or improperly set controls can affect the cooling ability of the unit.

8. If cooling is weak and you have veriﬁ ed that the ﬁ lter is clean and the controls are properly set, the unit may be low on refrigerant, and you should call your Friedrich service provider to check the unit.

9. Keep blinds, shades and drapes closed on the sunny side of the room being cooled.

10. Proper insulation helps your unit maintain the desired inside temperature.

11. Whenever possible, shade west-facing windows with awnings.

12. Keep window coverings away from the unit to provide free air ﬂ ow.

Filter Information

The ﬁ lter in your Friedrich removes dust, pollen and other impurities from the air as they are drawn through the unit. The ﬁ lter is permanent and reusable, and has a germicidal treatment which is not affected by washing.

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A clogged, dirty ﬁ lter reduces the air ﬂ ow through the unit and reduces its efﬁ ciency. You should check the ﬁ lter every seven to ten days, depending on the amount your unit is used. Clean the ﬁ lter regularly.

FILTER RETAINER CLIPS

The ﬁ lter can be removed for cleaning by opening the front of

the unit and releasing the ﬁ lter from its retaining clips.

Maintenance Checklist

Won’t Cool

If the unit operates, but doesn’t cool, check to see that the controls are properly set. Inspect the ﬁ lter and clean it thoroughly, if needed. Check to see if the chassis seal gasket is installed (refer to installation instructions).

Won’t Run

If the unit does not operate at all, check that the power supply connections are tight. Check for blown fuses or tripped circuit breakers. Replace blown fuses with the proper size time-delay fuse. The nameplate on the unit shows the proper fuse size. After restoring power, wait three minutes before restarting the unit.

Inside Coil Freezes Up

Your Friedrich Hazardgard is designed not to freeze with outdoor temperatures as low as 45°F (7°C). Freezing should only occur when the outside air is damp and below 45°F (7°C). If the indoor

coil should ice over while cooling, set the thermostat to the warmest position until the ice on the coil is gone. Setting the thermostat to a slightly warmer position will probably keep ice from forming on the coil. A dirty ﬁ lter will contribute to icing.

Cleaning

The front grille of your Friedrich, as well as the complete cabinet may be cleaned with warm water and a mild detergent. The coils and base pan should be cleaned periodically for the most efﬁ cient operation. We suggest you call your Friedrich dealer for this service.

Lubrication

Fan motors are factory lubricated and sealed. No lubrication is required.

Hazardgard Special Features

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• Permanent Split-Capacitor, totally enclosed fan motor to assure efﬁ cient operation even under adverse electrical conditions. Motor has a special stainless steel shaft to resist corrosion and a hermetically sealed overload for arc-free operation.

• High capa cit y com presso r wit h int er nal h er meti call y sea led overload.

• Solid-state printed circuit board insulated against corrosion on conductor paths. Contains transient voltage suppressor to protect controls against transient voltage spikes. Provides solid state switches for arc-free operation.

• Hot gas bypass low ambient control to permit operation without freezing at outdoor ambient temperatures as low as 45°F (7°C).

• Environmentally sealed on-off switch and gold plated contacts in thermostat for corrosion resistance.

• Electrodeposited epoxy primer and alkyd enamel, both oven-baked for an attractive, long-lasting ﬁ nish.

Friedrich Air Conditioning quality has been proven by more than 25 years of successful experience from the Gulf of Mexico to the searing sands of the Arabian desert.

• Copper tubing/aluminum ﬁ n coils.

• Galvanized steel cabinet and base pan, all bonderized.

• Slide-out chassis for easy installation in window or through–the–wall.

• Extra insulation inside, including completely insulated plenum chamber for quieter, more efﬁ cient cooling.

• Entire unit test run in environmental chamber before crating.

• Eight–way air ﬂ ow control for uniform air circulation.

• Patented electronic control circuit.

• Condensate drain with exclusive mosquito trap.

• 15 amp circuit with time- delay fuse required. Accommod ates direct wiring.

• Long lasting 3/8" (10 mm) thick air ﬁ lter, germicidally treated, easily removed for cleaning.

Control Panel

Function Control (Power)

This switch is a double pole, single throw toggle switch. ON - Turns everything on. OFF - Turns everything off.

Temperature Control

The knob at the bottom is the thermostat which is a cross ambient type used to maintain the desired comfort level. The thermostat reacts only to a change in temperature at the bulb location - turn the knob clockwise to set cooler, counterclockwise for warmer.

Exclusive

Friedrich leads with the ﬁ rst UL Listed Room Air Conditioners designed to cool living quarters and other enclosures situated in hazardous locations where speciﬁ c volatile ﬂ ammable liquids or gases are handled or used with enclosed containers or systems.

Friedrich Hazardgard room air conditioners are designed to meet the National Electrical Code, Article 500 requirements for Class I, Division 2, Groups A, B, C, D Hazardous locations, and are the only air conditioners UL Listed for this application. THIS UNIT IS LISTED BY UNDERWRITERS LABORATORIES FOR USE IN CLASS I, DIVISION 2, GROUPS A, B, C, D HAZARDOUS LOCATIONS. Operating Temperature Code: T3B.

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Installation Instructions

Models SH15 and SH20

NOTE: THIS MANUAL INCLUDES INSTALLATION INSTRUCTIONS FOR BOTH WINDOW MOUNT AND THROUGH-

THE-WALL INSTALLATIONS

Electrical Requirements

ALL FIELD WIRING MUST MEET THE REQUIREMENTS OF THE NATIONAL ELECTRICAL CODE (ANSI/NFPA 70) ARTICLE 501.

THE FIELD-PROVIDED CIRCUIT PROTECTION DEVICE (HACR CIRCUIT BREAKER OR TIME DELAY FUSE) MUST NOT EXCEED THE AMPACITY INDICATED ON THE PRODUCT NAMEPLATE.

IMPORTANT: Before you begin the actual installation of your air conditioner, check local electrical codes and the information below.

Your air conditioner must be connected to a power supply with the same A.C. voltage and frequency (hertz) as marked on the data plate located on the chassis. Only alternating current (A.C.), no direct current (D.C.), can be used.

An overloaded circuit will invariably cause malfunction or failure of the air conditioner; therefore, it is extremely important that the electrical power is adequate. Consult your dealer or power company if in doubt.

The following instructions are for HAZARDGARD models and cabinet sizes listed below.

GROUPS CABINET SIZE (H x W x D)

SMALL CHASSIS SH15

MEDIUM CHASSIS SH20

Model Number Plug Type

SH15 Junction Box 250V-15 Amp

15 15/16" x 25 15/16" x 27 3/8"

(405 mm x 660 mm x 695 mm)

17 15/16" x 25 15/16" x 27 3/8"

(455 mm x 660 mm x 695 mm)

Circuit Rating

Time Delay Fuse

SH20 Junction Box 250V-15 Amp

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Hazardgard Window Mount Installation Hardware

ITEM DESCRIPTION QTY. No.

SHELL MOUNTING PARTS

1 SUPPORT BRACKET 2

2 SCREW, 10 - 24 x 1" HEX HEAD 4 3 10 - 24 FLAT WELDNUT 4 4 SCREW, SHEET METAL #12A x 2" 7

WINGBOARD ANGLE MOUNTING 5 WINGBOARD ANGLE, TOP 1 6 WINGBOARD ANGLE, SIDE 2 7 SCREW, SHEET METAL #8A x 3/8" 2

WINGBOARD MOUNTING PARTS 8 WINGBOARD (MASONITE) - (NOT SHOWN) 1 9 "J" TYPE SPEED NUT 4 10 WINGBOARD CLIP (SPRING STEEL) 4 11 SCREW. #8A x 1/2" PHILLIPS TRUSS HD. 4

WINDOW SEALING 12 SEALING GASKET (VINYL) 1 13 WINDOW SEAL GASKET (DARK FOAM) 1 14 CHASSIS SEAL GASKET (LIGHT FOAM) 1

ITEM # 2

ITEM # 4

ITEM # 3

ITEM # 7

ITEM # 9

ACCESSORY DETAIL

ITEM # 14

ITEM # 1

ITEM # 11

ITEM #10

ITEM # 13

ITEM # 12

ITEM # 6

ITEM # 5

NOT TO SCALE

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Unpacking The Unit

STEP 1 Remove decorative plastic return air grille to a safe area away from the unit.

STEP 2 Remove the installation hardware, wingboard and two (one light colored and one dark colored) gaskets from beneath the

unit, and place them in a safe area away from the unit.

STEP 3 Remove the chassis retainer by removing the far right screw in the basepan (see Figure A); save this screw to reattach the

chassis retainer after installation (Step 15). Also, remove and discard the two retainer screws and plastic bushings located at the rear of the unit.

STEP 4 While an assistant holds the cabinet stationary, use the hand pull at the front of the base pan (see Figure A) to pull the

chassis out of the cabinet. Remove white foam blocks used to restrain the compressor during shipment. Inspect basepan for dislodged white blocks, and remove. Do not remove any other foam.

Figure A

HAND PULL

FAR RIGHT SCREW

CABINET

STEP 3

HAND PULL

CHASSIS RETAINER

Chassis Wiring and Preparation

STEP 1 Remove the junction box, cover and screw (above items) from the shipping position underneath the fan motor. Install one

junction box mounting leg in the upper left position facing the rear of the junction box.

STEP 2 Remove and discard the plastic bushing from the conduit connector on the side panel of the control compartment. Strip the

black wires only, approximately 1/2 inch (13 mm).

STEP 3 Insert all wires (2 black, 1 green) into the box and thread the box onto the conduit connector until tight. Back off counter

clockwise until the junction box is vertical with the mounting leg at the upper–right position facing the box opening. Be sure that the shell can ﬁ t between this box and the chassis.

PROVIDED HARDWARE

1 JUNCTION BOX FRIEDRICH PN: 613-893-00 2 MOUNTING LEGS RACO INC. PN: 5324-0 2 LEG SCREWS 2 HOLE COVERS 1 GROUND SCREW BOX COVER FRIEDRICH PN: 613-892-00 GASKET RACO INC. PN: 5173-0 2 SCREWS 1 SHEET METAL SCREW

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Shell (Cabinet) Preparation

It will be necessary to relocate the sill plate of the cabinet 2" back from its shipping position, and the shell guides 4" forward, to the forward-most hole in the shell rail. Discard the chassis retainer wire disconnected in Section II, Step 3. The junction box mounting leg from Section VI, Step 1, and the ﬁ eld-installed conduit will retain the chassis in the shell.

IF THIS INSTALLATION IS FOR A SASH WINDOW – With the wide ﬂ ange and pilot holes of the sill plate forward, put the screws/nuts in the rear holes of the sill plate and third shell hole from the front (the center of three square holes). Anchor the side angles (Item #6) by engaging the tabs at each end of the sill plate with the bottom loops of the side angle. Engage the tabs at

each end of the top angle (Item #5) with the top loops of the side angle. Install two (2) screws (Item #7) to secure the top angle tabs and the side angle to the rear-most holes in the side of the cabinet (See Figure B, below).

IF THIS INSTALLATION IS THROUGH A WALL – Turn the sill plate end to end so that the wide ﬂ ange with pilot holes will be over the wall header (towards the rear) and two inches from the front of the cabinet. Bend the tabs into the channel of the sill plate, put the screws/nuts in the front holes of the sill plate and into the second shell hole from the front. Use one bolt on each side to secure the sill plate to the cabinet. (See Figure C, below.)

Figure B

Figure C

CABINET

BEFORE

TOP ANGLE (ITEM #5)

SCREW (2 REQUIRED)

SIDE ANGLE (ITEM #6) 2 REQUIRED

SILL PLATE TAB

AFTER

8A X 3/8" LONG SCREW (ITEM #7) 2 REQUIRED

LOOP

Detail B-1

Detail B-2

TAB

LOOP

SILL PLATE

TURN SILL PLATE END TO END

RETAINER, CHASSIS

(THIS SIDE ONLY)

DETAIL 2

BEND TABS DOWN

NOTE: HOLES MOVED TO BACK SIDE

NUT (2 REQUIRED)

DETAIL 1

Position the sill plate into the cabinet with the sill plate holes to the back. Align the plate 2 inches from the front of the cabinet and secure it with a nut and bolt in each end.

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Shell Installation: Sash Window Installations

Shell (Cabinet) Installation – Standard Sash Windows

STEP 1 Check the window sill and frame to be sure they are in good condition and ﬁ rmly anchored to the wall. Repair if

necessary.

STEP 2 CABINET MOUNTING: Raise the lower window sash 1/4" more than the height of the cabinet. Carefully slide the cabinet

through the open window until the sill plate channel rests behind the window sill and the top support angle rests against the window (See Figure D). Center the cabinet side to side and drill three (3) 5/32" dia. pilot holes into the window sill using the holes in the cabinet sill plate as a guide. Install three (3) #12A x 2" long screws (Item #4) (See Figure D).

Figure D

TOP SUPPORT ANGLE

CENTER CABINET SIDE TO SIDE IN WINDOW

PULL WINDOW SASH DOWN BEHIND THE TOP SUPPORT ANGLE

DRILL 3 5/32" PILOT HOLES AND INSTALL 3

#12A X 2" LONG SCREWS (ITEM #4)

SIDE SUPPORT ANGLE

WINDOW SILL

LOCATE THE SILL PLATE GUIDE CHANNEL

JUST BACK OF THE WINDOW SILL.

3/8" (10 MM)

Figure E

A 1" X 4" OR 2" X 4" SPACER SHOULD BE USED BE-

TWEEN THE WALL AND BRACKET WHEN INSTALLED

ON ALUMINUM, ASBESTOS OR VINYL SIDING.

DOWN SLOPE

#12A X 2" SCREW (ITEM #4)

SUPPORT BRACKET

SUPPORT BRACKET (ITEM #1)

10 - 24 FLAT WELDNUT (ITEM #3)

10 - 24 X 1" HEX HEAD SCREW (ITEM #2)

STEP 3 OUTSIDE SUPPORT MOUNTING: Assemble the support brackets (Item #1) to the bottom rails of the cabinet with four

(4) 10-24 1" long screws (Item #2) and four (4) 10–24 ﬂ at nuts (Item #3). Adjust the support brackets to bring the bottom pads in contact with the wall surface. (See Figure E.)

A 1" x 4" or 2" x 4" SPACER SHOULD BE USED BETWEEN THE WALL AND THE SUPPORT BRACKETS WHEN INSTALLED ON ALUMINUM OR VINYL SIDING). Drill 5/32" (4 mm) dia. pilot holes, and secure the brackets to the wall with two (2) #12A x 2" long screws (Item #4). Adjust the support brackets to provide an approximate 3/8" (10 mm) down slope towards the outside for drainage. Tighten all screws. (See Figure E).

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The illustrations below show a standard frame construction installation as well as some suggested ways of adapting the support bracket to thick walls and large stone ledges.

Typical Installation Sill Plate

Figure 1

Figure 3

10 - 24 SCREW 10 - 24 FLAT NUT

3/8" (10 MM) SLOPE DOWN

#12A X 2" SHEET METAL SCREW

1" X 2" OR 2" X 4" SPACER BETWEEN WALL AND BRACKET SHOULD BE USED ON ALUMINUM, ASBESTOS OR VINYL SIDING

STONE LEDGE

3/8" (10 MM) SLOPE DOWN

#12A X 2" SHEET METAL SCREW

2" X 4" SPACER

Figure 2

SHADED AREA

Figure 4

CUT HERE

DISCARD

STONE LEDGE

3/8" (10 MM) SLOPE DOWN

STONE LEDGE OUTSIDE WALL

CUT TO FIT DIMENSION "A" AND BEND DOWN TO FOR A VERTICAL LEG

3/8" (10 MM) SLOPE DOWN

STRAIGHTEN TAB TO LAY FLAT ALONG THE BOTTOM RAIL OF THE SHELL.

SECURE THE LONGEST SIDE OF THE BRACKET TO THE SHELL.

ADJUST IN OR OUT TO REST ON THE LEDGE

STEP 4 CUT WINGBOARD PANELS: Measure and cut the wingboard panels from the supplied masonite (Item #8) to ﬁ t the

spaces between the side window channels and the sides of the cabinet (See Figure F).

NOTE: AFTER CUTTING PANELS, MAKE A TRIAL TEST TO SEE IF THEY FIT THE SPACE WITH ABOUT

1/8" CLEARANCE BEFORE GOING TO STEP 5.

Figure F

MEASURE DISTANCE "B" TO THE INSIDE OF THE CHANNEL ON EACH SIDE

CUT HERE AND DISCARD THE CENTER WASTE MATERIAL

WINGBOARD

SUBTRACT 1/8" (3 MM) FROM DIMENSION "B" AND MEASURE FROM THE EDGE OF THE WINGBOARD (ITEM # 8), MARK AND CUT WITH A SAW.

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"J" TYPE SPEED NUT (ITEM #9)

Figure G

CUT WINGBOARD PANEL

CENTER THE HOLE IN THE SPEED NUT OVER

THE SLOT IN THE WINGBOARD PANEL

TEP 5 ASSEMBLE CLIPS TO WINGBOARD PANELS: Assemble "J" type speed nuts (Item #9) and spring steel clips (Item

2 REQUIRED

SPRING STEEL CLIP (ITEM #10) 2 REQUIRED

CUT EDGE

SLIDE CLIP OVER CUT EDGE OF WINGBOARD PANEL

#10) to the edges of the cut wingboard panels (See Figure G).

Figure H

TOP OF CABINET

PLACE WINGBOARD PANEL IN WINDOW JAM TO COMPRESS THE SPRINGS INSIDE THE RUNNERS, AND SWING THE PANEL INTO PLACE INDICATED BY THE DOTTED LINE.

WINDOW JAM

SECURE THE SIDE WINGBOARD PANELS TO THE SIDE ANGLES WITH FOUR (4) #8 X 1/2" LONG SCREWS (ITEM #11), TWO ON EACH SIDE.

SECTION A - A

STEP 6 INSTALL SIDE WINGBOARD PANELS: Be sure that the cabinet has been secured to the window sill and the outside

support brackets have been installed as shown in Figures D and E on Page 11. Raise the window sash and install the right and left side wingboard panels (See Figure H).

STEP 7 INSTALL WINDOW SEALING GASKETS: Measure and cut the vinyl window seal gasket (grey color, Item #12) to ﬁ t

the width of the window and install as shown in Figure I. Pull the window sash down behind the gasket. Measure and cut the dark foam window seal gasket (Item #13) and install it between the upper glass panel and the top part of the lower sash (See Figure I).

Figure I

VINYL WINDOW SEAL GASKET ITEM #12)

FOAM WINDOW SEAL GASKET (ITEM # 13)

LOWER WINDOW SASH

VINYL WINDOW SEAL GASKET TOP WINGBOARD ANGLE

SECTION B - B

NOTE: FOR REASONS OF SECURITY AND SAFETY, THE CUSTOMER MUST PROVIDE A MEANS OF PREVENTING

THE WINDOW FROM OPENING.

STEP 8 When possible, caulk the outside of the installation with industrial type caulking to prevent air and water leaks.

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Shell Installation: Through-the-wall Installations

Wall Preparation

The maximum wall thickness permissible without special construction is determined by the model size to be installed. THE OUTSIDE CABINET CONDENSER AIR INTAKE LOUVERS MUST NOT BE BLOCKED BY EXTENDING INSIDE THE WALL AREA. Observe the maximum wall thickness shown as dimension "A" in Figure J.

Special Instructions For Extra Thick Walls

For installation in walls exceeding the maximum thickness shown as dimension A, the following suggested construction may apply. (See Figure J).

Figure J

15 1/8 " (384 MM) MAXIMUM WALL THICKNESS

CONDENSER AIR INTAKE LOUVERS

TOP VIEW SHOWING BEVELED SIDES FOR AIR INTAKE. WALL BELOW UNIT MUST ALSO BE BEVELED TO ASSURE PROPER TILT ANGLE.

EXTRA THICK WALL CONSTRUCTION

2" (51 MM) MINIMUM BOTH SIDES

CONDENSER AIR INTAKE LOUVERS

STEP 1 CHECKING WIRING AND PLUMBING: Check all wiring and plumbing inside and outside the wall to be sure none

will be broken where the hole is to be cut.

STEP 2 HOLE CONSTRUCTION: Depending on the size of the unit to be installed, layout the hole dimensions in accordance

with the chart below (See Figure K). Cut and frame in the hole to the ﬁ nished dimensions. Use

2" x 4" material for framing and follow the suggested typical installations in Figure L, M or N on Page 15.

NOTE: IF THE WALL CONSTRUCTION IS TYPICAL FRAME OR 2 X 4 STUDDING WITH BRICK OR STONE VENEERS, LOCATE THE HOLE NEXT TO ONE OF THE STUDS. FOR MASONRY, CONCRETE OR CINDER BLOCK WALLS, LOCATE THE HOLE FOR CONVENIENCE.

Figure K

FINISHED SMALL MEDIUM DIMENSION CHASSIS CHASSIS

A 16-3/16" 18-3/16"

B 26-3/16" 26-3/16"

HOLE SIZE REQUIREMENTS

NOTE: THESE DIMENSIONS ARE FOR FINISHED HOLE SIZE

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Figure L

Figure M

CAULK ALL SIDES

WEATHER CABINET

CAULK ALL SIDES

FRAME WALL CONSTRUCTION

SHIM THE VOID SPACE AT THE TOP AND SIDES WITH WOOD AS REQUIRED

BRICK VENEER CONSTRUCTION

Figure N

SHIM VOID SPACES AT TOP AND SIDES WITH WOOD AS REQUIRED

SOLID MASONRY CONSTRUCTION

CAULK ALL SIDES

CABINET

MORTAR

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STEP 3 Slide the cabinet into the hole far enough to allow the guide-channel of the sill plate to contact the inside wall surface (See

Figure O).

STEP 4 Drill three (3) 5/32" dia. pilot holes through holes in sill-plate into the framing and install three (3) #12 x 2" long screws

(Item #4) (See Figure O).

Figure O

TRIM MOULDING

SCREW #12A X 2" LONG

SILL PLATE GUIDE CHANNEL

INSIDE WALL SURFACE

USE 3

CAULK ALL SIDES AIR TIGHT

NOTE: SUPPORT BRACKETS MAY BE OMITTED FROM THROUGH-THE-WALL INSTALLATIONS IF THE CABINET IS SECURED AS FOLLOWS. DRILL 2 HOLES IN EACH SIDE AND INSTALL 4 FASTENERS (2 EACH SIDE).

USE #12A X 2" (51 MM) SCREWS, TOGGLE BOLTS OR EXPANSION ANCHOR BOLTS AS SHOWN IN STEP 5.

SUPPORT BRACKETS (ITEM 1) (SEE NOTE ABOVE)

SCREW #12 X 2" LONG, USE ONE IN EACH BRACKET. DRILL 5/23 (4 MM) DIA. PILOT HOLES.

TYPICAL INSTALLATION

3/8" (10 MM) SLOPE DOWN

NOTE: ALTERNATE FASTENERS WHICH MAY BE USED FOR SECURING THE SILL PLATE IN THE WALL, AND THE

SUPPORT BRACKETS TO THE OUTSIDE WALL ARE NOT FURNISHED, BUT ARE AVAILABLE AT A LOCAL HARDWARE STORE.

MOLLY OR TOGGLE BOLT EXPANSION ANCHOR BOLT

STEP 5 Drill two (2) 5/32" (4 mm) dia. pilot holes in each side at the locations shown (Figure O) and install four (4) #12 x 2" screws

(Item #4). If the hole construction in Step 2 provides a sturdy mount with solid vertical studs, no support brackets are required. The installation must support the weight of the unit plus an additional weight of 400 pounds (185 kg) on the rear of the cabinet. The support brackets may be used for through-the-wall installations as shown in Figure O, for additional support.

STEP 6 If desired, trim around the cabinet on the room side with a suitable frame molding furnished by the installer (See Figure O).

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Chassis Installation

STEP 1 Slide the chassis into the cabinet stopping approximately 3" from full insertion. Stuff the chassis seal gasket (Item #14) one

inch deep between the chassis and the cabinet (See Figure P). Begin at either bottom corner and go up the side, across the top, and down the opposite side. Make sure that the gasket is behind the conduit connector (furthest from you). Push the

chassis into the shell the remaining distance so that the plastic front shrouds the front edge of the shell. Fasten the junction box mounting foot to the shell with the sheet metal screw.

If chassis seal gasket is not installed, the operation of the unit will be negatively affected. Also, the operation noise and

outside noise will be ampliﬁ ed.

NOTE: Field wiring must be provided to this junction box in accordance with NATIONAL ELECTRIC CODE ARTICLE 501.

Field and equipment grounds are to be terminated at the post in the junction box with the green screw provided. Equipment power leads are to be connected with the ﬁ eld supply by means of wire nuts (not provided). Install the gasket and cover plate onto the junction box.

Figure P

CHASSIS SEAL GASKET

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STEP 2 Be sure that the ﬁ lter is in place then install the return air grille (See Figure Q). The top of the return air grille can be butted

against the bottom of the discharge plenum. Snap the grille into place by pushing the grille up and onto the unit's latches at the bottom.

Figure Q

Discharge Air Plenum

DETAIL 2

Slot

Tab

Slot

Tab

Return Air Grille

DETAIL 1

DETAIL 3

Return air grille

Latches

Latch

DETAIL 4

Side view

(Cutaway)

STEP 3 You have completed your installation. Conduct a review of your installation to insure that the unit is safely and securely

installed. Refer to the "OPERATING GUIDE" section of this manual to test the operation of your unit.

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