Friedrich HAZARDGARD SH20 User Manual

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Installation & Operation Manual

Hazardous Duty Room Air Conditioner

230-Volt:SH15 | SH20

920-024-05(12-04)

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

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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, efficient 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 efficiently:

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 be grounded and must be installed in accordance 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 much capacity is also hard on the unit as it will cycle on and off too rapidly, and cannot control humidity as well.

4.When you first 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 filter frequently (See General Maintenance).

6.Do not block the air flow 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 filter or improperly set controls can affect the cooling ability of the unit.

8.If cooling is weak and you have verified that the filter 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-facingwindows with awnings.

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

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Filter Information

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

A clogged, dirty filter reduces the air flow through the unit and reduces its efficiency. You should check the filter every seven to ten days, depending on the amount your unit is used. Clean the filter 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 filter and clean it thoroughly, if needed. Check to see if the chassis seal gasket is installed (refer to installation instructions).

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 filter will contribute to icing.

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-delayfuse. 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

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 efficient operation. We suggest you call your Friedrich dealer for this service.

Lubrication

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

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Hazardgard Special Features

Permanent Split-Capacitor,totally enclosed fan motor to assure efficient operation even under adverse electrical conditions. Motor has a special stainless steel shaft to resist corrosion and a hermetically sealed overload forarc-freeoperation.

High capacity compressor with internal hermetically sealed overload.

Solid-stateprinted circuit board insulated against corrosion on conductor paths. Contains transient voltage suppressor to protect controls against transient voltage spikes. Provides solid state switches forarc-freeoperation.

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-offswitch and gold plated contacts in thermostat for corrosion resistance.

Electrodeposited epoxy primer and alkyd enamel, both oven-bakedfor an attractive,long-lastingfinish.

Copper tubing/aluminum fin coils.

Galvanized steel cabinet and base pan, all bonderized.

Slide-outchassis for easy installation in window orthrough–the–wall.

Extra insulation inside, including completely insulated plenum chamber for quieter, more efficient cooling.

Entire unit test run in environmental chamber before crating.

Eight–wayair flow control for uniform air circulation.

Patented electronic control circuit.

Condensate drain with exclusive mosquito trap.

15ampcircuitwithtime-delayfuserequired.Accommodates direct wiring.

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

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.

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 first UL Listed Room Air Conditioners

 

designed to cool living quarters and other enclosures situated in

 

hazardous locations where specific volatile flammable 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 LABORA-

 

TORIES 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-WALLINSTALLATIONS

Electrical Requirements

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

THE FIELD-PROVIDEDCIRCUIT 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

15 15/16" x 2515/16" x 273/8"

(405 mm x 660 mm x 695 mm)

 

 

 

 

 

MEDIUM CHASSIS SH20

17 15/16" x 2515/16" x 273/8"

(455 mm x 660 mm x 695 mm)

 

 

 

 

 

Model Number

Plug Type

Circuit Rating

Time Delay Fuse

 

 

SH15

Junction Box

250V-15Amp

 

 

 

SH20

Junction Box

250V-15Amp

 

 

 

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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 # 7

ITEM # 9

ACCESSORY DETAIL

ITEM # 14

ITEM # 1

ITEM # 2

ITEM # 3

ITEM # 4

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

CABINET

STEP 3

HAND PULL

HAND PULL

FAR RIGHT SCREW

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 theupper–rightposition facing the box opening. Be sure that the shell can fit 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-mosthole 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 thefield-installedconduit will retain the chassis in the shell.

IF THIS INSTALLATION IS FOR A SASH WINDOW – With the wide flange 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-mostholes 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 flange 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

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

2 REQUIRED

CABINET

TOP ANGLE (ITEM #5)

 

 

 

 

 

LOOP

 

SIDE ANGLE

 

 

 

(ITEM #6) 2

Detail B-1

 

 

REQUIRED

TAB

 

 

 

 

 

 

LOOP

 

SILL PLATE

 

 

 

TAB

 

 

Detail B-2

Figure C

BEFORE

AFTER

 

CABINET

 

SCREW

 

 

 

 

(2 REQUIRED)

SILL PLATE

 

NOTE: HOLES

 

MOVED TO

 

 

 

 

 

 

BACK SIDE

 

 

 

NUT

 

 

RETAINER, CHASSIS

(2 REQUIRED)

TURN SILL PLATE

(THIS SIDE ONLY)

 

DETAIL 1

END TO END

DETAIL 2

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.

BEND TABS DOWN

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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 firmly 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.

Figure E

3/8" (10 MM)

 

 

 

DOWN SLOPE

 

 

 

 

SUPPORT

 

 

 

 

 

SUPPORT BRACKET (ITEM #1)

 

BRACKET

10 - 24 FLAT WELDNUT (ITEM #3)

 

 

 

#12A X 2"

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

 

 

 

 

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

SCREW

 

 

 

(ITEM #4)

 

 

 

TWEEN THE WALL AND BRACKET WHEN INSTALLED

 

 

 

 

 

 

 

ON ALUMINUM, ASBESTOS OR VINYL SIDING.

 

 

 

 

 

 

 

 

 

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

(4) 10-241" long screws (Item #2) and four (4)10–24flat 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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