AIRMASTER PORTABLE AIR-COOLED AIR CONDITIONER INSTALLATION & OPERATION MANUAL

Transcription

1 3AKSM Rev. 4 AIRMASTER PORTABLE AIR-COOLED AIR CONDITIONER INSTALLATION & OPERATION MANUAL GENERAL DESCRIPTION... 1 PRODUCT DATA AND SPECIFICATIONS... 2, 3 UNIT DESCRIPTION Standard Features Condensate Removal... 7 Refrigeration System Components... 8 Safety Controls... 8 General Airflow Patterns... 8 ACCESSORIES APPLICATIONS... 17, 18 SERVICE Installation Checkout of Operation Troubleshooting Guide Inspection and Repair Preventative Maintenance DIAGRAMS Piping Schematic Wiring Diagram (Interconnecting and Logic)... 29, 30 Unit Drawing PARTS LIST... 23, 33 WARRANTY GENERAL DESCRIPTION The Koldwave Airmaster is a portable, air-cooled air conditioner/zone cooler suitable for indoor/outdoor use. The Koldwave Airmaster can cool an entire area by discharging air through its 16" x 12.5" grille. This selfcontained unit is also designed to direct cool air to specific areas or objects through (optional) dual 6" diameter snozzles, or a single 10" diameter flexible duct. This provides precision cooling for heat-sensitive equipment, production processes and personnel. The cord-connected Koldwave Airmaster is provided with heavy-duty casters. The swivel-locking front casters prevent sliding and stationary rear casters provide handling ease for conventional relocation. This unit is completely self-contained with the entire refrigeration system, electrical components, condenser and evaporator housed in one attractively-designed, two-tone enamel finish metal cabinet. NOMENCLATURE 3 A K Series Air Cooled Koldwave 50 Hz 208/230 Volts Single Phase/60 HZ Capcity Indicator (24 or 30 available) 260 NORTH ELM STREET WESTFIELD, MA Tel No. (413) Fax No. (413)

2 3AK2412 AIRMASTER PRODUCT DATA AND SPECIFICATIONS COOLING CAPACITY (BTU/HR) & EER Evaporator Fan Speed High Medium Low Conditions Total Sensible EER* Total Sensible EER* Total Sensible EER* 67 F DB/57 F WB (54% RH) 17,050 12, ,750 11, ,300 11, F DB/60 F WB (50% RH) 17,600 12, ,450 12, ,850 11, F DB/62 F WB (48% RH) 18,100 13, ,950 12, ,300 11, F DB/67 F WB (52% RH) 18,800 12, ,700 11, ,150 11, F DB/71 F WB (30% RH) 20,350 16, ,150 16, ,500 15, F DB/75 F WB (40% RH) 21,350 14, ,100 13, ,200 12, F DB/83 F WB (61% RH) 21,900 8, ,700 8, ,850 8, F DB/80 F WB (36% RH) 21,650 13, ,400 13, ,650 13, F DB/96 F WB (50% RH)** 24,500 8, ,300 8, ,500 8, ELECTRICAL DATA*** Voltage/Phase/Hertz**** /1/60 Amperage 10.5 Fuse Size (Amps) 15 Watts 2083 Inrush Current (Amps) COMPRESSOR Horsepower 1.5 Watts 1700 RLA 7.9 LRA 50.0 RPM 3450 Refrigerant - 22 (oz.) 73 BLOWER (EVAPORATOR) Speed High Medium Low Amps Watts RPM " H2O E.S.P. with Grille " H2O E.S.P. with Snozzles " H2O E.S.P. with Snozzles " H2O E.S.P. with 10" Diameter Duct " H2O E.S.P. with 10" Diameter duct Time delay fuses and circuit breakers are recommended. **** EER determined with condenser discharge air ducted into another area on high fan speed. **** Maximum operating condition. **** Electrical ratings per U.L Standard 484 at 95 F DB/75 WB on high speed. **** 220/50/1 available - consult factory BLOWER (CONDENSER) Speed High Low Amps Watts RPM E.S.P E.S.P CONDENSATE PUMP (OPTIONAL) Motor HP Lift (Ft. of H 2O) 11.0 Amps 0.26 Watts 50 EVAPORATOR Number of Rows 3 Coil Face Area (Ft. 2 ) 2.36 CONDENSER Number of Rows 3 Coil Face Area (Ft. 2 ) 5.25 EVAPORATOR AIR FILTER SIZE (INCHES) Width 16.5 Height Thickness 0.5 CONDENSER AIR FILTER SIZE (INCHES) 2/UNIT Width Height 20.0 Thickness 0.5 UNIT DIMENSIONS (INCHES) (A) Height with Casters (B) Height without Casters 48.5 (C) Width (D) Depth NET UNIT WEIGHT (LBS.) 298 SHIPPING WEIGHT (LBS.) 361 D C A B 2

3 3AK3012 AIRMASTER PRODUCT DATA AND SPECIFICATIONS COOLING CAPACITY (BTU/HR) & EER Evaporator Fan Speed High Medium Low Conditions Total Sensible EER* Total Sensible EER* Total Sensible EER* 67 F DB/57 F WB (54% RH) 21,450 15, ,800 14, ,300 13, F DB/60 F WB (50% RH) 22,450 16, ,750 15, ,150 14, F DB/62 F WB (48% RH) 23,000 17, ,200 15, ,500 14, F DB/67 F WB (52% RH) 24,300 15, ,550 15, ,600 14, F DB/71 F WB (30% RH) 25,950 21, ,100 20, ,250 18, F DB/75 F WB (40% RH) 26,550 17, ,800 17, ,050 16, F DB/83 F WB (61% RH) 27,150 11, ,500 11, ,750 10, F DB/80 F WB (36% RH) 26,900 17, ,100 16, ,400 16, F DB/96 F WB (50% RH)** 29,950 11, ,350 10, ,700 10, ELECTRICAL DATA*** Voltage/Phase/Hertz**** /1/60 Amperage 13.0 Fuse Size (Amps) 20.0 Watts 2603 Inrush Current (Amps) COMPRESSOR Horsepower 2.0 Watts 2090 RLA 9.6 LRA 62.5 RPM 3450 Refrigerant - 22 (oz.) 68 BLOWER (EVAPORATOR) Speed High Medium Low Amps Watts RPM " H2O E.S.P. with Grille " H2O E.S.P. with Snozzles " H2O E.S.P. with Snozzles " H2O E.S.P. with 10" Diameter Duct " H2O E.S.P. with 10" Diameter duct Time delay fuses and circuit breakers are recommended. **** EER determined with condenser discharge air ducted into another area on high fan speed. **** Maximum operating condition. **** Electrical ratings per U.L Standard 484 at 95 F DB/75 WB on high speed. **** 220/50/1 available - consult factory BLOWER (CONDENSER) Speed High Low Amps Watts RPM E.S.P E.S.P CONDENSATE PUMP (OPTIONAL) Motor HP Lift (Ft. of H 2O) 11.0 Amps 0.26 Watts 50 EVAPORATOR Number of Rows 3 Coil Face Area (Ft. 2 ) 2.36 CONDENSER Number of Rows 3 Coil Face Area (Ft. 2 ) 5.25 EVAPORATOR AIR FILTER SIZE (INCHES) Width 16.5 Height Thickness 0.5 CONDENSER AIR FILTER SIZE (INCHES) 2/UNIT Width Height 20.0 Thickness 0.5 UNIT DIMENSIONS (INCHES) (A) Height with Casters (B) Height without Casters 48.5 (C) Width (D) Depth NET UNIT WEIGHT (LBS.) 303 SHIPPING WEIGHT (LBS.) 365 D C A B 3

4 STANDARD FEATURES/UNIT CONSTRUCTION FEATURES Optional flexible duct kit extends up to 10 feet to vent condenser air. Four way adjustable grilles control air discharge for even, comfortable cooling. Convenient control panel houses on-off switch, thermostat and indicator lights. Hinged panel allows easy access to 5-gallon condensate holding tank. Large, heavy-duty casters allow you to move the Koldwave Airmaster to virtually any location. SERVICEABILITY The Koldwave Airmaster has removable panels to provide full service accessibility. The interior is divided into three accessible sections: upper front, lower front and rear section. Right Side 1. Control Panel 2. Evaporator Coil 3. Evaporator Blower Assembly 4. Condenser Tank Water Level Detection System Rear Section 5. Electrical Control Box 6. Compressor 7. Condenser Coil 8. Accumulator 9. Condenser blower Assembly Left Side Lower Front High Pressure Reset Button 11. Discharge Access Valve 12. Suction Access Valve 13. Condensate Holding Tank 14. Hinged Access Door 4

5 CABINET The Koldwave Airmaster cabinet is constructed of 22-gauge galvanized steel with two-tone enamel finish for corrosion protection. It is lined with thermal and sound absorbent insulation material in the discharge area and vibration dampening on all panels. Top and bottom hinged access doors are secured by magnetic strips. The unique combination of light gray, dark gray, and black color cabinet panels makes Koldwave Airmaster an attractive addition to any location. CONDENSER DISCHARGE FLEXIBILITY The Koldwave Airmaster is designed to allow easy conversion of condenser discharge from top (standard) to rear discharge. The Koldwave Airmaster is designed to allow the condenser to be rotated from the top of the back of the unit. The unique arrangement can be accomplished simply by removing both right-and lefthand side panels, and interchanging the top panel with the upper back panel. Fan Speed Rotary Switch The three-position rotary fan speed selector switch, located below the rocker switch, provides high, medium and low evaporator blower fan speeds as marked on the face of the control panel. Thermostat The self-contained unit maintains the desired amount of cooling, which can be selected by adjusting the thermostat to the preferred temperature. The thermostat sensing bulb is in the return air stream behind the slotted return air intake door and return air filter. The range of the thermostat is F with a differential of ± 3 F. Indicator Lights The green-colored Power-On light indicates power to the control panel when the mode selector switch is in either the fan or cooling mode. The blue-colored Cool light indicates the unit is calling for cooling mode operation, with the compressor, condenser and evaporator blowers all running. The red Tank Full warning light indicates that the condensate tank is full and needs to be emptied. Rear Discharge Top Discharge CONTROL PANEL Electrical control is concentrated in an enclosed area behind the control panel. The control panel contains the mode selector rocker switch, the fan speed rotary switch, the thermostat and power, cool and tank full indicators lights. Mode Selector Rocker Switch The three mode selector rocker switch, located on the control panel, has three functions: 1. To provide fan mode only operation when depressed to the left. 2. To turn the unit off when set in the center position. 3. To activate the cooling mode when depressed to the right Mode Selector Rocker Switch 2. Fan Speed Rotary Switch 3. Thermostat 4. Power-On Indicator (green) 5. Cooling Mode Indicator (blue) 6. Tank Full Indicator (red) 5

6 DISCHARGE AIR GRILL The Koldwave Airmaster is equipped with one 16 x 12.5 plastic grille, located in the upper front panel, to provide a cool and quiet air flow. AIR FILTERS The Koldwave Airmaster employs three, 1/2" thick, washable, aluminum mesh (black) air filters, located behind the slotted front (evaporator) air intake door and beneath the left side (condenser) panel. The evaporator filter can easily be removed and cleaned; just pull the front slotted panel down and remove the filter. The condenser filters are removed by lifting the filters up and pulling toward you and down. 1. Discharge Grille 2. Control Panel 3. Thermostat Sensing Bulb 4. Evaporator Coil Evaporator Filter 6. Hinged Evaporator Intake Door 7. Condenser Filter ELECTRICAL COMPONENT LOCATION Electrical interconnection is achieved via cables/ wires terminated in an elecrical box located in the lower back section of the unit. The electrical box encases the compressor s run capacitor, a transformer, the compressor contactor, a freeze control, a condenser fan speed selector and two terminal strips. The manual reset high pressure switch and the condensate holding tank s water level detection system are mounted on opposite sides of the bulkhead. Electrical Box Electrical Box Closeup 1. Freeze Control 2. Low Voltage Terminal Block 3. Compressor Capacitor 4. Condenser Fan Speed Control 5. Contactor 6. Transformer SERVICE CORD The six-foot service cord employed in these units fits in a 20A-230 volt Nema 6-20 receptacle. SERVICE CORD WITH NEMA 6-20 PLUG PLUG END TERMINATION RECEPTACLE 20A - 230V NEMA 6-20R JACKET 6

7 CONDENSATE REMOVAL The Koldwave Airmaster incorporates a 5.0 gallon capacity, polyethylene, condensate drain tank, located in the lower front section of the unit. A high water level cut-out switch, installed on the bulkhead behind the compressor as shown in the photo, is used to stop the entire unit s operation automatically when the tank is full of water. An adjustment screw is provided to set the desired water tank level when the unit cuts out. Turn screw clockwise to lower water level and thus decrease the tank s weight for emptying. To prevent spillage when carrying filled tank, a cap is chained to the tank top. WATER DETECTION SYSTEM An adjusting screw sets the desired water level in the tank anywhere from 1 gallon minimum to 4 gallon maximum. Once the desired water level in the tank has been reached the unit will shut down and not restart until the condensate tank is emptied and replaced. To reduce water level in tank from factory setting, turn adjusting screw clockwise 2-1/2 Turns = 3.5 gallons 4-3/4 Turns = 2.5 gallons 6-3/4 Turns = 1.5 gallons CAUTION: Turn unit off before emptying tank when tank light is illuminated. There are three methods in which to remove condensate water from unit: 1. With condensate tank and water level detection system, which comes standard on unit. See detailed drawing and discussion below. 2. With optional condensate pump kit shown on page By gravity draining out bottom of unit. This is accomplished by connecting a hose to bottom of evaporator drain pan and routing through a 3/4" hole in base pan located just to the left of the condensate tank tray. A snap-in plug has to be removed from hole to permit this Condensate Tank 2. Water Level Detection Control 7

8 REFRIGERATION SYSTEM COMPONENTS COMPRESSOR The scroll compressor employed in the Koldwave Airmaster is the most efficient and durable on the market. Its simple design makes a major contribution to its outstanding efficiency, reliability, and quiet performance. The Bristol Inertia compressor, the most advanced compressor in the industry today is also used in Koldwave Airmaster. COILS The condenser and evaporator have enhanced coil surfaces employing rifled tubes and louvered fins for maximum performance. BLOWER MOTORS The Koldwave Airmaster is equipped with a threespeed PSC condenser motor and a four-speed PSC evaporator motor for design efficient flexibility over a wide range of air flows. Both motors are of a high quality totally-enclosed design with sleeve bearings. BLOWERS The Koldwave Airmaster uses two blowers instead of one to enable flexibility in duct design, lowest possible sound level and serviceability ease on both the condenser and evaporator. EXPANSION DEVICE The refrigeration system is controlled by capillary tubes, maintaining precise control of the expansion process over the unit s wide ( F room ambient) operating range. SAFETY CONTROLS COMPRESSOR OVERLOAD & THERMOSTAT The scroll compressor is equipped with a current/ thermal internal overload and a discharge thermostat to guarantee positive compressor protection. The thermostat is located on top of the compressor shell. It is designed to sense dangerous high-discharge temperature levels and remove power from the compressor until temperature levels are safe again. The approximate thermostat cut-out/cut-in are 290/140 F. HIGH PRESSURE CUT-OUT The Koldwave Airmaster incorporates, within the refrigeration system, a manual reset high pressure switch for maximum protection of the compressor. The cut-out pressure setting is 375 ±10 psig. In the event that the high pressure switch setting is exceeded, the compressor and condenser fan can be restarted by depressing the reset button located in the lower front section of the unit. The high pressure control s capillary line screws onto an access valve on the refrigeration hot gas line to make it possible to remove or replace a defective control without disturbing the refrigeration system. FREEZE CONTROL The unit employs an automatic reset freeze control, located in the electrical box, to turn the entire unit off at low ambients and defrost the evaporator coil for approximately five minutes. CONDENSER FAN SPEED CONTROL An automatic fan speed control encased in the electrical box is used to change the condenser fan speed from high to low at low ambients. A SPDT toggle switch may be used instead of the automatic fan speed control switch. GENERAL AIRFLOW PATTERNS Condenser intake air is drawn in through the upper and lower sections of the unit s left-hand side panel and passes through the condenser coil, extracting heat from the refrigeration system. The hot air is discharged out the exhaust air opening located on top of the unit. Evaporator air is taken in through the middle, front slotted evaporator intake door and is cooled by the evaporator coil. The cool air is then discharged out of the unit through a plastic grille. Both condenser and evaporator inlets are provided with filters. 8

9 ACCESSORIES 9

10 CEILING PANEL/DUCT KIT ASSEMBLY SA 040-D-0035 (OPTIONAL) A 12" diameter, flexible duct kit assembly extends up to 10 feet, to vent condenser air or to draw condenser return air from the ceiling when a condenser return air plenum is used. A 2' x 2' lay-in ceiling/panel collar assembly is provided for venting into the false ceiling, plus a duct collar to attach duct to the unit. Installation of the flexible duct can be achieved in the following manner: 1. Slip one end of the duct over the lay-in ceiling panel/collar assembly and the other end over the unit duct collar. 2. Clamp the duct to lay-in ceiling panel/panel collar assembly and the unit duct collar (see page 12 for details). 3. Place the 2' x 2' lay-in ceiling panel in the false ceiling directly above the unit. 4. Screw the duct collar to the unit with six screws provided. 10

11 CONDENSER RETURN AIR PLENUM SA076-D-2411 Plenum Construction A 48" x 16 1/2" x 21 3/8" condenser return air plenum constructed of 22 gauge galvanized steel with twotone enamel finish can be furnished. The entire inside of the plenum is lined with vibration dampening 1/8" thick armaflex insulation. This plenum is designed for use with a flexible duct kit assembly. A hinged filter access door is provided to remove or replace the condenser filters. The access door is secured by a magnetic strip. Plenum Application Koldwave Airmaster can be employed as a room air conditioner to cool the entire enclosed space in which it is placed. In this application, hot exhaust air venting and condenser air intake ducting are definitely needed. This can be accomplished by using the flexible duct kit assembly (optional) and the condenser return air plenum (optional). See figure on next page for orientation of flexible ducts. The condenser coil is cooled by the air drawn from the false ceiling. The air passes through the hot condenser coil, gets heated up, then discharges to an area outside the room being cooled (outdoors). Installation Procedure 1. Remove seventeen x 1/2" long phillips head screws securing left hand side panel to unit. The loose panels stay somewhat in place, but are not sturdy. Retain these screws to secure plenum to unit. 2. Assemble plenum front, top, bottom and back together with 12 light grey screws provided separately in plenum carton. 3. Mount plenum to unit with care to prevent panels from shifting, using the seventeen screws removed from the unit. 4. Attach side panel to plenum with 17 dark grey screws provided separately in plenum carton. 5. To remove or replace the condenser filters, open the filter access door, lift the filters up and pull out. 6. To install the flexible duct, slip one end of the duct over the lay-in ceiling panel/collar assembly and the other end over the plenum duct collar. 7. Clamp the duct to lay-in ceiling panel/collar assembly and the plenum duct collar. 8. Place the 2' x 2' lay-in ceiling panel in the false ceiling directly above the unit. 9. Secure the duct collar to the plenum with six screws provided. 10. The 3AK S condenser hot air exhaust duct can be secured to the unit by slipping and clamping one end of the duct over the collar assembly. The other end is routed to outdoors. Condenser Room Air Intake Condenser Hot Air Exhaust Condenser Return Air Plenum SA076-D-2411 Plenum installed with additional (optional) accessory kits on plenum inlet and unit discharge 11

12 12

13 DISCHARGE AIR SNOZZLE KIT ASSEMBLY (OPTIONAL) SA 040-D-0034 Koldwave Airmaster is designed to direct cool air to specific areas without cooling an entire space when only certain objects within the area require cooling, thus providing precision cooling for heat-sensitive equipment, production processes and personnel. This can be accomplished by (optional) dual 6" diameter snozzles, (23" long compressed and 31" long extended) flexible air duct. The snozzles are secured to a painted 16-gauge galvanneal mounted plate. The snozzle assembly fits over the evaporator air discharge opening and is secured by sheet metal screws. The use of snozzles will derate the capacity by approximately 2.5% Snozzle End Protector 2. Snozzle Duct 3. Snozzle Mounting Plate Assembly 13

14 10" DIAMETER EVAPORATOR DISCHARGE KIT ASSEMBLY SA 040-D-0037 (OPTIONAL) A single 10" diameter, 10' long wire-reinforced flexible air duct (part #040-C-0025) can be used with this kit for remote spot cooling. The duct is secured to a 16-gauge light grey painted galvanneal mounting plate by a clamp (part #SA019-A-0067). The duct assembly fits over the evaporator air discharge opening and is secured by sheet metal screws. The use of the duct will derate the capacity by approximately 1.0%. 14

15 DUCT DESIGN Condenser Duct Should a longer, 12" diameter duct be needed on the condenser discharge, 10 foot flexible ducts may be coupled together up to a maximum equivalent length of 100 feet. (Allow 6 feet for every 90 bend.) The external static pressure (E.S.P.) at the condenser discharge cannot exceed 0.25" of water. When employing more than 50 feet of duct, the noise baffle, located at the condenser discharge, should be removed (see page 26 for removal procedure.) This will prevent the unit from tripping on its high pressure switch at high ambients. Extended Evaporator Snozzles Should 6" diameter snozzle extensions be needed on the evaporator discharge, 9.75 foot long wirereinforced flexible duct lengths may be coupled together up to a maximum of 60 equivalent feet. (Allow 3 feet for every 90 bend.) The external static pressure (E.S.P.) at the evaporator discharge cannot exceed 0.5" of water. Exceeding this will restrict airflow and trip unit out on its freeze control. Single 10" Diameter Evaporator Discharge Duct On application where one large cold air supply duct is desired, a mounting plate with a single 10" diameter mounting flange is available, which mounts just as the snozzle plate. A 10 foot length of 10" diameter wirereinforced flexible duct can be clamped to it. Should a longer duct be desired, 10 foot duct lengths can be coupled together up to a maximum of 100 equivalent feet. (Allow 6 feet for every 90 bend.) The external static pressure at the evaporator discharge cannot exceed 0.5" of water. Duct Clamps 6", 10" and 12" diameter twin wire duct clamps are used to secure the various flexible ducts to the unit ceiling panel, evaporator discharge panel, snozzles, and to duct couplers. These unique clamps provide a secure, leak-free seal of the wire-reinforced duct to the various sheet metal accessory items. To use, position the duct over the accessory item and slip the clamp around the duct. Then slide the hooked end of the wire clamp between the two ends attached to the screw assembly plate, slipping it behind the retaining washer. Tighten the screw with a phillips screwdriver to complete the installation. See illustration below for further details. 15

16 CONDENSATE PUMP KIT SA 057-D-0048 (OPTIONAL) A condensate pump, capable of pumping against an 11 foot head, can be installed for positive removal of evaporator condensate. This kit is a convenience for those who do not wish to empty the five gallon condensate tank periodically, especially for units with permanent installation. At the condensate pump, a check valve is inserted in the hose and secured by two plastic clamps. Installation of the pump kit into the unit can be accomplished by the simple steps below. PROCEDURE TO INSTALL CONDENSATE PUMP KIT ASSEMBLY 1. Disconnect unit power source. 2. Open front lower hinged door. 3. Pull out plastic drain hose form inside of tank and remove tank from hinged tray. (Do not drain hose from evaporator drain pan). 4. Mount pump kit assembly in hinged tray using the two holes provided in left side of tray. Use the two machine screw and hex nuts to secure the pump kit. 5. Route clear plastic hose from pump through a hole in the base pan. Hole is plugged by a knockout button which should be removed. 6. Route pump wire leads through bulkhead wall (through Heyco star-shaped bushing). 7. Route pump wire leads through plastic bushing in electrical box and connect to terminal strip positions 2 and Insert plastic drain hose from evaporator pan into the drain tube clamp provided on the pump kit assembly. 16

17 APPLICATIONS ZONE COOLER Koldwave Airmaster is designed for maximum versatility to withstand high ambient temperatures on both indoor and outdoor installations whether used for primary, emergency back-up, or supplemental cooling. It can be employed in an open environment as a zone cooler with the evaporator grille or the optional snozzles directing or focusing the powerful stream of refrigerated air on a specific object. In this application, the hot air exhaust duct is not required, especially if it is used outdoors. With the addition of the flexible ducts to direct the cold air and other accessories, Koldwave Airmaster can be placed almost anywhere floor space is a premium, thus giving it multiple applications. Some examples of the Koldwave Airmaster s convenient and efficient zone cooling are their use by athletic teams to cool dugouts and sidelines, and cooling a tent, as illustrated below. Zone cooling provides convenient, economical, and energy-efficient air conditioning in areas where cooling the entire environment is impractical. The cool air is directed only where it is aimed or needed without wasting it elsewhere. Note that even though the object is cooled with a concentrated air supply, the surrounding area will be slightly heated up by the condenser s hot exhaust air. 17

18 AREA COOLER In a similar application where a specific area needs to be cooled, a condenser hot air exhaust duct may be employed as shown in the figure below. Refer to (optional) Ceiling Panel/Duct Kit Assembly on page 10 for more details. Evaporator discharge grille or optional snozzles may be used. While evaporator discharge air cools the air directly in front of the unit, warm room air will be drawn into the side of the unit to cool the condenser and then discharge into the false ceiling or out a window. The net effect will be a cooler area all around the unit. Cooling vehicle maintenance areas, temporary work stations, loading docks, and packing areas are just a few examples. INSTALLATION INSTRUCTIONS Before installing: Check the air conditioner/spot cooler for any shipping damage. Air conditioners are throughly inspected at the factory and carefully packed. If any damage is evident, file a claim with the delivering carrier immediately. Electrical Requirements: Check the nameplate on the back of the unit to make certain that the proper power is available. Refer to the Specifications section for voltage, fuse requirements and proper NEMA receptacles. Check for proper wall outlets as described in Standard Features. Operating the unit with improper voltages will void the warranty. CAUTION: An extension cord can be used provided it is rated at least volts with grounding-type attachment plug and grounding-type connector (load fitting). Koldwave Airmaster portable/spot cooler requires minimal installation. It merly plugs into a NEMA 6-20R receptacle and is immediately ready to operate. The entire system is built into one compact unit that can be moved and installed easily. 18

19 CHECKOUT OF UNIT OPERATION Koldwave Airmaster portable spot cooler provides fan-only circulation and cooling modes. This is accomplished by setting the controls to operate in any of the following positions: FAN ONLY Plug unit in, Depress the upper mode selector rocker switch to the left for fan operation. Rotate the lower fan speed selector switch to the right for low fan speed, to the middle for medium speed and to the left for high speed. COOLING CYCLE The green-colored pilot light will illuminate when mode selector rocker switch is depressed to the left or right, indicating there is power to the control panel. The blue-colored light, indicating the cooling mode of operation, will illuminate when the upper mode selector switch is depressed to the right and the thermostat calls for cooling. When the blue light is on, the compressor, and the condenser and evaporator blowers will be running. Allow the unit to run with fan speed set on high for twenty minutes and then turn the thermostat to the desired set point. Note the temperature of the air entering the filter and the temperature of the air leaving the discharge grille. In a room of 85 F dry bulb 50% relative humidity, the air temperature coming from the grille should be approximately 15 F cooler than the air returning to the filter. The red-colored light located below the blue-colored light will illuminate when the condensate tank is full. Refer to the condensate reservoir tank on page 7. TROUBLESHOOTING GUIDE SERVICE PROCEDURES Before troubleshooting this system, read this manual to determine electrical power and installation requirements to allow the spot cooler to perform at its maximum efficiency. Refer to general description, wiring diagrams and photographs to get an understanding of how the unit functions. Service other than routine maintenance should be performed only by a qualified refrigeration service person. In service/troubleshooting, there is no substitute for a good understanding of the Koldwave Airmaster modes of operation, control systems, components and safety systems (see service performance chart). SYSTEM PERFORMANCE CHART The chart below shows suction and discharge pressures (PSIG), plus total amp draw with evaporator fan on high speed, with condenser motor on high speed and with condenser blower baffle. The condenser discharge air is ducted into another area with a 12" diameter, 10' long flexible duct. Model 3AK2412 3AK3012 Ambient Temperatures Versus Suction and Discharge Pressures Room Conditions 115 F DB/96 F WB 104 F DB/80 F WB 95 F DB/83 F WB 95 F DB/75 F WB 95 F DB/71 F WB 80 F DB/67 F WB 75 F DB/62 F WB 72 F DB/60 F WB 67 F DB/57 F WB 115 F DB/96 F WB 104 F DB/80 F WB 95 F DB/83 F WB 95 F DB/75 F WB 95 F DB/71 F WB 80 F DB/67 F WB 75 F DB/62 F WB 72 F DB/60 F WB 67 F DB/57 F WB Discharge Pressure Suction Pressure Total Amps Use the above chart for reference when suction and discharge pressure and total amps are a determining factor in analyzing the problem. Refer to troubleshooting guide when above data can be useful in determining overcharge or undercharge of unit. 19

20 TROUBLE SHOOTING GUIDE continued PROBLEM SYMPTOM POSSIBLE CAUSE REMEDY Unit does not operate. Entire unit does not operate. Unit starts, but stops immediately. Unit operates, but stops after a few minutes. 1. Power interruption. Green power light should be off. 2. Defective tank full unit cutout switch. 3. Tank full unit cut-out switch miswired. 4. Condensate tank could be full, but red light might be defective. 1. Defective compressor thermal overload. 2. Defective compressor motor. 3. Defective run capacitor. 1. Defective compressor motor. 2. Defective thermal overload. 3. Defective high pressure switch. 4. Loose connection in electrical circuit. 5. Manual reset button out on HPC. 6. Unit overcharged. 7. Dirty condenser coil and filter. 8. Condensate tank right at trip point. 9. Condenser fan running at too high an external static pressure, reducing flow. 10. Cutting out on freeze control. 11. Defective freeze control. 12. Defective condenser fan motor or fan motor capacitor. 1. Check external power supply. 2. Check and replace. 3. Review wiring diagram and revise wiring. 4. Check tank and replace red light if defective. 1. Replace after checking current. 2. Remove and replace. 3. Check and replace. 1. Check and replace. 2. Replace after checking current. 3. Check cut-out setting and replace if defective. 4. Trace loose wire(s) and firm up connection. 5. After diagnosing and correcting cause for unit trip out, begin unit operation by depressing the red button located inside the lower hinged door. 6. Purge some refrigerant. 7. Clean filter and condenser coil. 8. Empty tank. 9. Reduce duct length. 10. Look for cause of low suction line temperature. 11. Check and replace. 12. Check and replace. Insufficient cooling. Improper size of unit. Insufficient air flow through evaporator. Evaporator discharge air not cool. 1. Improper size of unit. 1. Dirty evaporator air filter in unit. 2. Dirty evaporator coil 3. Ice on evaporator coil. 4. Obstructed intake. 5. Wrong speed on evaporator fan motor. 6. Evaporator fan motor miswired. 1. Refrigerant leak. 2. Plugged cap. tubes or strainer. 1. Check if the unit is undersized for the load, Add supplemental unit(s). 1. Clean air filter. 2. Unusual condition requires cleaning. 3. Defrost. Use fan only by depressing the upper rocker switch to right. 4. Remove obstuction. 5. Select higher speed on 3-speed fan selector switch. 6. Consulting wiring diagram and revise wiring. 1. Locate leak and repair. Evacuate and recharge. 2. Replace cap. tube strainer assembly. 20

21 PROBLEM SYMPTOM POSSIBLE CAUSE REMEDY Insufficient cooling. continued Compressor motor not running. 1. Defective compressor motor. 2. Defective compressor capacitor. 3. Defective thermal overload. 4. Defective thermostat. 5. Defective wiring connection. 6. Defective mode switch. 7. Defective contactor. 8. Defective transformer. 9. Defective high pressure switch. 10. Defective freeze control. 1. Check and replace. 2. Check and replace. 3. Check and replace. 4. Check and replace. 5. Check and repair. 6. Check and replace. 7. Check and replace. 8. Check and replace. 9. Check and replace. 10. Check and replace. No cooled air discharge. Evaporator blower motor not running. 1. Defective fan motor. 2. Defective fan motor capacitor. 3. Defective wiring connection. 4. Defective fan speed switch. 1. Check and replace. 2. Check and replace. 3. Check and repair. 4. Check and replace. Evaporator blower not running up to full speed. 1. Low voltage to unit. 2. Defective motor capacitor. 3. Blower wheel rubbing against housing. 1. Determine reason and correct. 2. Replace capacitor. 3. Inspect wheel alignment and correct. Evaporator fan runs, but compressor does not start. Room air temperature discharged through grilles. 1. Low voltage to unit. 2. Thermostat. 3. Loose or defective wires at compressor, capacitor, high pressure switch, freeze controls, transformer and contactor. 4. Stuck compressor. 5. Compressor shorted, open or burned. 6. Shorted or open run capacitor. 7. HPC holding unit off. 8. Unit tripped on freeze control due to: a) Low refrigerant charge. b) Room ambient very low. c) Evaporator motor inoperative. 1. Check power supply for proper voltage at unit; ± 10% of rated nameplate voltage. 2. Setting may be too high; check unit and reset. Thermostat may be out of calibration or otherwise defective; replace. Also check for loose connections. 3. Tug on wires to see if they will separate from connections. Replace terminals if necessary. 4. Try a start capacitor across the run capacitor momentarily (three seconds). 5. Check for shorts, opens and grounds. Remove and replace compressor. Check resistance see page Remove and replace. 7. Check if condenser fan is functioning. Clean condenser coil. 8. a) Add some charge. b) Unit will start when ambient rises. c) Check cause and replace if defective. 21

22 PROBLEM SYMPTOM POSSIBLE CAUSE REMEDY Abnormal noise and vibration. Water leaking from unit 1. Compressor running backwards (scroll compressor only). 2. Loose compressor mounting nuts. 3. Defective, improper or worn rubber grommets on the compressor mounting bolts. 4. Copper tube vibrating. 5. Loose cabinet or internal component 6. Loose blower wheel. 7. Blower wheel hitting shroud. 8. Blower bearing defective. 1. Leaking evaporator or condensate pan. 2. Dirty (optional) condensate pump or excessive lift on pump. 3. Defective drain hose (clogged or loose connection). 4. Defective microswitch causing condensate tank to overflow. 5. Hole or crack in condensate tank. 1. Shut unit off. Wait until compressor comes to a full stop. Then restart. 2. Tighten. 3. Replace. 4. Adjust by bending slightly to firm position. Separate tubes touching cabinet or each other. 5. Check and tighten loose screws. 6. Tighten screws on blower wheel to shaft. 7. Adjust wheel position on motor shaft. 8. Replace blower motor. 1. Locate leak and repair pan. 2. Check to see if the elevation is over 11 ft. (if it is over 11 ft., a larger condensate pump is required). Otherwise, replace pump if defective. Pump will operate properly against 11 ft. of water total head pressure on pump. If combination of vertical height and horizontal drain line exceeds 11 ft. of water pressure drop, problems may arise. 3. Repair or replace. 4. Remove and replace. 5. Remove and replace. 22

23 INSPECTION AND REPAIR OF ELECTRICAL SYSTEM Thermostat Turn the thermostat down (clockwise) all the way. Check for continuity across terminals 1 and 2 of the thermostat. At room temperature (72 F) there is continuity across those two terminals. If continuity is broken across the terminals, replace the thermostat. Fan/Off/Cool Switch At each of the fan/off/cool switch, there should be continuity across the following terminals. Switch Position Off Fan Cool Conducting Terminals None Center and Left Center and Right If there is no switch continuity in the fan and cool, position, replace the switch. Fan Speed Switch L1 3AK3012 Motor Lead (Color) To Switch Terminal L1 to #1 Black L1 to #4 Blue L1 to #3 Orange L1 to #2 Red Switch Conducting Position Terminals High Speed L1 to #1 Medium Speed L1 to #4 Low Speed L1 to #3 3AK2412 Motor Lead (Color) To Switch Terminal L1 to #1 Blue L1 to #4 Orange L1 to #3 Red L1 to #2 Black There should be continuity across the above terminals, except L1 to #2. If none, replace the switch. L2 is a dummy terminal used for the extra wire from the 4-speed motor. Tank Full Unit Cut-Out Switch Depress the microswitch to check for continuity. If there is not continuity between common and normally open terminals, replace the switch. High Pressure Switch Check for continuity across terminals 1 and 2 of the high pressure switch. At normal pressure when the unit is not operating, there is continuity across the two terminals. If continuity is interrupted across the terminals, replace the high pressure switch. Cut-out pressure psig Cut-in (restart) pressure psig Compressor Motor Measure resistance across the terminals of the compressor motor. Resistance between C-R at 70 F approximately 0.98 OHMS ± 7% (3AK3012) Resistance between C-S at 70 F approximately 3.03 OHMS ± 7% Resistance between C-R at 70 F approximately 1.35 OHMS ± 7% (3AK2412) Replace compressor when the resistance is not at these stated values. Compressor Thermal Overload Check for continuity across overload s two terminals. At normal room temperatures, there is continuity across the two terminals. If no continuity exists, replace the overload. Compressor and Fan Motor Capacitors Before and after the test, always short across two terminals to discharge electrostatic charges. Set the ohmmeter to 100 OHMS range and place its two probes against the zero OHMS, then the meter reading should gradually approach infinity. If the ohmmeter shows infinity from the outset or the meter reading does not move from zero OHMS, replace the capacitor. 23

24 Condenser Fan Motor Measure resistance across the terminals to the fan motor. Resistance across black and white 13.5 OHMS ± 10% at 25 C Resistance across black and brown 49.2 OHMS ± 10% at 25 C Condensate Pump Motor (optional) Measure resistance across the terminals of the pump motor OHMS ± 8% at 25 C. When the resistance is not within these stated values, replace the pump motor. Tank Full, Power and Cooling Mode Pilot Lights Make a test circuit as shown in the figure below. If the light fails to illuminate, replace it. Resistance across black and blue 18.1 OHMS ± 10% at 25 C Resistance across black and orange 23.0 OHMS ± 10% at 25 C Resistance across black and red 30.4 OHMS ± 10% at 25 C When resistance is not between these values, replace the fan motor. 24

25 INSPECTION AND REPAIR OF REFRIGERANT Attentively check all connections and every part for leaks whenever the refrigerant system is repaired. Use a leak detector or the halide torch to inspect the system. When repairing a refrigerant leak, the brazing flame will cause oxidation to occur inside the copper tubing being repaired. It is therefore desirable to use a slightly reduced flame and to flow dry nitrogen gas through the refrigerant piping while brazing to prevent this oxidation from taking place. Once the repair is completed, thoroughly evacuate the refrigerant system with a vacuum pump before recharging the system. PARTS REPLACEMENT PROCEDURE Make sure the power cord is unplugged from the wall outlet before doing any service on the unit. To gain access to components in control panel, remove four black phillips head screws on plastic panel face, then swing panel out. Fan/Off/Cool Rocker Switch Disconnect wires from rocker switch, press down four positive-locking legs of switch used for snap-in mounting and pull-out. Replace switch and reverse above procedure. Fan Speed Rotary Switch Disconnect wires from rotary switch. Pull switch knob off and unscrew hex nut securing switch to panel. Replace switch and reverse above procedure. Thermostat Disconnect wires from thermostat. Pull thermostat knob off and remove two screws securing thermostat. Pull down evaporator intake hinged door and remove thermostat sensor bulb from clip secured on a bracket in evaporator coil. Replace thermostat and reverse above procedure. Indicator Lights To replace indicator lights, disconnect wires from controls, bend Tinnerman clip securing light and pull out. Install new light(s) reversing the above procedure. Condenser Fan Motor To gain access to condenser fan motor, remove righthand side panel, upper back and lower back panels, plus electrical box cover. Disconnect fan motor wires from capacitor, fan speed control and terminal strip. Loosen set screws in blower wheel. Unfasten clamp around motor housing and replace motor, reversing procedure. Condenser Blower Housing To replace the condenser blower housing, first remove the right-hand and left-hand side panels, plus upper back panel. Next, remove the condenser blower panel assembly. Then remove six sheet metal screws securing the housing to the blower panel. Next remove the condenser fan motor as described in Condenser Fan Motor. Replace and install a new housing by reversing the above procedure. Evaporator Fan Motor Assembly Pull condenser filters out. Remove right and left-hand side panels. Disconnect fan motor wires from capacitor and fan speed switches. Loosen set screw in blower wheel. Unfasten clamp around motor housing and install new motor reversing above procedure. To replace blower housing, remove nuts and screw securing housing to evaporator panel. Tank and Microswitch Access the condensate holding tank located in the bottom front section by pulling down the hinged bottom front door. The holding tank s water level detection system can be reached by removing the right-hand side panel. Compressor To service the compressor and its running capacitor, remove right-hand side panel. High Pressure Control To gain access to high pressure control, pull down the hinged bottom front door and unscrew two sheet metal screws retaining the control. Remove lower back panel and loosen 3/8" flare nut securing control capillary tube to schrader fitting in compressor discharge line. Replace high pressure control, reversing above procedure. 25

26 Removal of Condenser Baffle To gain access to condenser baffle, remove both righthand and left-hand side panels, plus top back and condenser blower panels from the unit. Unscrew six sheet metal screws securing the condenser blower housing to the blower panel. The baffle is located between the condenser blower protective screen and the blower housing discharge opening (see figure below). 26

27 PREVENTATIVE MAINTENANCE Koldwave Airmaster portable spot cooler has been designed to give maximum performance and reliability with minimum maintenance. Maintenance of the system is concentrated in three areas covered in the following paragraphs. BLOWER MOTORS The only required maintenance to the condenser and evaporator blower motors is to oil them annually. This can be accomplished by following these simple steps: 1. Remove right-hand side panel to gain access to condenser and evaporator blower motors. 2. Remove yellow oil plugs from oil ports. 3. Add 30 drops (1/5 teaspoon) SAE 20 non-detergent oil into the ports. 4. Replace yellow oil plugs. FILTERS The life of a filter depends entirely on its environment and use. It is recommended that air filters be inspected on a regular basis every four to six weeks. A clogged filter will cause the unit to operate at greatly reduced efficiency. This unit employs one 1/2" thick, washable aluminum mesh air filter located behind the louvered front (evaporator) panel and two on the left side (condenser) panel. The evaporator filter can easily be removed and cleaned; just pull down the evaporator intake hinged door and pull the filter out. The condenser filters can be removed by lifting filters and pulling toward you and down. The filters must be washed periodically when needed. This may be done as follows: 1. Soak filter in solution of warm water and detergent for 15 minutes. 2. Rinse in clean, hot water and shake excess moisture from filter. 3. Spray one side of filter with light film of oil. 4. Reinstall with oiled surface facing out from unit. CONDENSATE PUMP (optional) The condensate pump is located in the lower front section of the unit. To gain access to condensate pump, open lower front access door. The pump motor requires oiling every six months with SAE 20 nondetergent oil. The pan beneath the condensate pump should be cleaned when mineral deposits are visible. A clean pan will prolong the life of the pump and its operation. 27

28 GENERAL If the necessary maintenance steps are carried out regularly, the unit will provide long and reliable service, which you should expect from a quality Koldwave product. The refrigeration and electrical circuits of the system should only be serviced by a qualified service technician. If you experience any problems or have comments about your Koldwave product, we are always pleased to hear from you. This is the essential way in which we can improve our equipment and assist you in meeting your requirements. 28

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32 KOLDWAVE AIRMASTER 3AK SERVICE AND REPLACEMENT PARTS LIST PART # DESCRIPTION 3AK24 3AK30 STRAINERS 010-A-0050 STRAINER # X X ASSEMBLIES, STRAINERS AND CAP TUBES SA010-A-0100 STRAINER CAP TUBE ASSEMBLY X SA021-A-0101 STRAINER CAP TUBE ASSEMBLY X ACCUMULATORS 010-A-0096 ACCUMULATOR # X X BLOWERS AND BLOWER ACCESSORIES 013-A-0116 BLOWER ASSEMBLY 90-9T EVAPORATOR X X 013-B-0162 BLOWER ASSEMBLY 100-9T CONDENSER X X COMPRESSORS 020-A-0290 COMPRESSOR H25B17QABCA X 020-A-0291 COMPRESSOR H26B22QCBCA X 020-A-0221 COMPRESSOR ZR23K1 (SCROLL) X ELECTRICAL COMPONENTS SA025-A-0618B MICROSWITCH BA-2RV-A2 X X 025-A-0008 COMPRESSOR CAPACITOR 2 AMP 2 POLE X X 025-A-0241 TRANSFORMER 230/24V. X X 025-A-0470 SERVICE CORD 14/3 20 AMP 230V. X X 025-A-0635 ROTARY SWITCH X X 025-A-0636 RED INDICATOR LIGHT 1030G98 230V. X X 025-A-0637 GREEN INDICATOR LIGHT 1030G99GR 230V. X X 025-A-0638 BLUE INDICATOR LIGHT 1030G99BLU 230V. X X 025-A-0640 ROCKER SWITCH TIGMU721 COOL /FAN/OFF X X 025-A-0641 RESISTOR 100K OHM 1031QD1 X X FILTERS/AIR 030-A-0060 EVAPORATOR FILTER 16-1/2 X 17-1/4 (BLACK) X X 030-A-0059 CONDENSER FILTER 17-3/8 X 20 (BLACK) X X EVAPORATORS 031-C-0212 EVAPORATOR COIL #C32536 X X CONDENSERS 031-A-0213 CONDENSER COIL #C32537 X X MOTORS/BLOWERS 050-A-0153 EVAPORATOR X X 050-A-0152 CONDENSER X X CONTROL PANEL 061-C-0096 PLASTIC FACEPLATE WITH SILKSCREEN X X CAPACITORS/MOTORS 017-A-0010 RUN CAPACITOR V. X 017-A-0099 RUN CAPACITOR 5 370V. X X 017-A-0086 RUN CAPACITOR V. X CASTERS 021-A-0041 CASTER 121-3SB #25095 (SWIVEL) X X 021-A-0042 CASTER #25752 (STATIONARY) X X CONTROLS 066-A-0104 DEFROST CONTROLA X X 066-A-0098 THERMOSTAT C X X 066-A-0106 HIGH PRESSURE SWITCH MG X X 068-A-0105 CONDENSER FAN SPEED CONTROL A OHE X X CAPILLARY TUBES 067-A-0275 CAPILLARY TUBE.055 X 40" A-0289 CAPILLARY TUBE.059 X 30" 3 DISCHARGE GRILLES SA038-D-0045 DISCHARGE GRILLE X X 063-B-0011 GRILLE SPRING X X 32

33 KOLDWAVE AIRMASTER 3AK SERVICE AND REPLACEMENT PARTS LIST PART # DESCRIPTION 3AK24 3AK30 KNOBS AND HANDLES 041-A-0017 BLACK KNOB WITH CAP 28MM X X ASSEMBLIES/CABINET 076-C-2358 UPPER LEFT SIDE PANEL X X 076-D-2323 FRONT LEFT SIDE PANEL X X 076-D-2322 RIGHT SIDE PANEL X X 076-D-2325 EVAPORATOR INTAKE DOOR (LOUVERED) X X 076-C-2319 CONDENSER BLOWER PANEL (HOLE) X X 076-C-2328 TOP BACK PANEL (SOLID) X X 076-C-2320 LOWER BACK PANEL X X 076-C-2318 ACCESS DOOR (TANK) X X 076-B-2380 CONDENSER BLOWER BAFFLE X X MISCELLANOUS 023-A-0043 CONDENSATE TANK 5 GALLON WITHOUT AIR BLEED X X PART # DESCRIPTION USAGE OPTIONAL ACCESSORIES FOR 3AK24/30 SA019-C " DIAMETER DUCT CLAMP SECURE CEILING PANEL TO FLEXIBLE DUCT AND EXHUAST FLANGE SA040-D " DIAMETER CEILING PANEL/DUCT ASSEMBLY KIT EXHAUSTING CONDENSER DISCHARGE AIR INTO DROP-IN CEILING SA040-D " DIAMETER SNOZZLE KIT ASSEMBLY DIRECTIONAL COOLING 040-S " DIAMETER WHITE FLEX DUCT ABILITY TO EXPAND SNOZZLE LENGTH WITH FLEXIBILITY 076-B " DIAMETER DUCT COUPLER ABILITY TO EXPAND SNOZZLE LENGTH WITH FLEXIBILITY SA019-C " DIAMETER DUCT CLAMP ABILITY TO EXPAND SNOZZLE LENGTH WITH FLEXIBILITY SA040-D " DIAMETER EVAPORATOR DISCHARGE PANEL SINGLE 10" DIAMETER FLEXIBLE COOLING DUCT CAPABILITY 040-C " DIAMETER WHITE FLEX DUCT SINGLE 10" DIAMETER FLEXIBLE COOLING COIL CAPABILITY 076-B " DIAMETER DUCT COUPLER JOIN FLEX DUCT FOR LONGER THROW APPLICATIONS SECURE FLEX DUCT TO EVAPORATOR DISCHARGE SA019-A " DIAMETER DUCT CLAMP PANEL. JOIN FLEX DUCT FOR LONGER THROW APPLICATIONS. SA076-C " DUCT FLANE FLANGE TO ATTACH EXHAUST DUCT TO CONDENSER DISCHARGE PANEL SA057-D-0048 CONDENSATE PUMP KIT 230V. REMOVAL OF CONDENSATE SA057-D-0055 HI-LIFT CONDESATE PUMP CAPABLE OF CONDENSATE REMOVAL UP TO 24' LIFT SA076-C " DIAMETER CEILING PANEL ASSEMBLY 2' X 2' LAY-IN PANEL FOR DUCTING CONDENSER DISCHARGE AIR 040-A " DIAMETER WHITE FLEX DUCT WHEN ADDITIONAL LENGTH IS NEEDED FOR CONDENSER DISCHARGE AIR 076-B " DIAMETER DUCT COUPLER TO JOIN ADDITONAL LENGTHS OF CONDENSER DISCHARGE FLEXIBLE AIR DUCT SA076-D-2411 CONDENSER RETURN AIR PLENUM ELIMINATES USING CONDITIONED/ RE-CIRCULATED AIR FOR RETURN 33

34 LIMITED WARRANTY The Manufacturer warrants to the original owner that the Product will be free from defects in material or workmanship for a period not to exceed one (1) year from startup or eighteen months from date of shipment from the factory, whichever occurs first. If upon examination by the Manufacturer the Product is shown to have a defect in material or workmanship during the warranty period, the Manufacturer will repair or replace, at its option, that part of the Product which is shown to be defective. The Manufacturer further warrants that the sealed refrigeration system (the product s compressor-motor condenser and evaporator) will be free from defects in materials and workmanship for five (5) years from date of start-up or sixty-six (66) months from date of shipment from the factory, whichever occurs first. If upon examination by the Manufacturer the Product is shown to have a defect in material or workmanship during the warranty period, the Manufacturer will repair or replace, at its option, that part of the Product which is shown to be defective. Electrical parts (such as relays, overloads, capacitors, etc ) are included in the one year limited warranty but not with the five year limited warranty of the sealed refrigeration system. This limited warranty does not apply: (a) if the Product has been subjected to misuse or neglect, has been accidentally or intentionally damaged, has not been installed, maintained or operated in accordance with the furnished written instructions, or has been altered or modified in any way. (b) to any expenses, including labor or material, incurred during removal or reinstallation of the Product. (c) to any workmanship of the installer of the Product. This limited warranty is conditional upon: (a) shipment, to the Manufacturer, of that part of the Product thought to be defective. Goods can only be returned with prior written approval from the Manufacturer. All returns must be freight prepaid. (b) determination, in the reasonable opinion of the Manufacturer that there exists a defect in material or workmanship. Repair or replacement of any part under this Limited Warranty shall not extend the duration of the warranty with respect to such repaired or replaced part beyond the stated warranty period. THIS LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EITHER EXPRESS OR IMPLIED, AND ALL SUCH OTHER WARRANTIES, INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE HEREBY DISCLAIMED AND EXCLUDED FROM THIS LIMITED WARRANTY. IN NO EVENT SHALL THE MANUFACTURER BE LIABLE IN ANY WAY FOR ANY CONSEQUENTIAL, SPECIAL, OR INCIDENTAL DAMAGES OF ANY NATURE WHATSOEVER, OR FOR ANY AMOUNTS IN EXCESS OF THE SELLING PRICE OF THE PRODUCT OR ANY PARTS THEREOF FOUND TO BE DEFECTIVE. THIS LIMITED WARRANTY GIVES THE ORIGINAL OWNER OF THE PRODUCT SPECIFIC LEGAL RIGHTS. YOU MAY ALSO HAVE OTHER RIGHTS WHICH MAY VARY BY EACH JURISDICTION. 34

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36 260 NORTH ELM STREET WESTFIELD, MA Tel No. (413) Fax No. (413)