Koldwave AIRMASTER 2AK1011, 2AK1411M Operation Manual

AIRMASTER

PORT ABLE

AIR-COOLED

AIR CONDITIONER

INSTALLATION &

OPERATION

2AKSM-3

42-9134 Rev. 4

MANUAL

GENERAL DESCRIPTION ..................................... 1

PRODUCT DATA AND SPECIFICATIONS......... 2, 3

UNIT DESCRIPTION

Standard Features ............................................... 4-7

General Air Flow Patterns ....................................... 7

ACCESSORIES ................................................. 8-13

APPLICATIONS ............................................... 14-15

SERVICE

Installation ............................................................. 15

Checkout of Unit.................................................... 16

Troubleshooting Guide..................................... 16-18

Inspection and Repair ...................................... 19-21

Parts Replacement Procedure ......................... 21-23

Preventative Maintenance..................................... 24

DIAGRAMS

Piping Schematic .................................................. 25

Wiring Diagram (Logic and Interconnecting).... 26-27

Unit Drawing.......................................................... 28

PARTS LIST..................................................... 29-30

WARRANTY......................................................... 31

GENERAL DESCRIPTION

The Koldwave Airmaster is a portable air-cooled zone
cooler which directs cool air to specific areas or
objects through four, adjustable, four-way grilles. Many
small computer and telephone rooms, tanning bed
rooms, laboratories, factories, and numerous areas
can be cooled by its indicated cooling capacity. The
Koldwave Airmaster can also be used for back-up
cooling or as an emergency stand-by unit.

The cord-connected Koldwave Airmaster is provided
with heavy-duty casters. The swivel casters provide
handling ease for convenient relocation. This unit is
completely self-contained with the entire refrigeration
system, electrical components, condenser and
evaporator housed in an attractively-designed, painted
metal cabinet.

NOMENCLATURE

2 A K 10 1 1

260 NORTH ELM STREET • WESTFIELD , MA 01085 • Tel No . [phone] • F ax No . [phone]
5211 CREEKBANK ROAD • MISSISSAUGA, ONTARIO L4W 1R3 CANADA • Tel No. [phone] • F ax No . [phone]

Series 1 = 115 Volt
Air Cooled Single Phase
Koldwave Capacity Indicator

KOLDWAVE 2AK (AIRMASTER)

2AK1011 AIRMASTER PRODUCT DATA AND SPECIFICATIONS

COOLING CAPACITY (BTU/HR) & EER

Evaporator Fan Speed

Conditions

67°F DB/57°F WB (54% RH) 9148 6653 9.71 8261 5568 9.31
72°F DB/60°F WB (50% RH) 9627 7113 9.83 8586 5906 9.32
75°F DB/62°F WB (48% RH) 9903 7287 9.86 8867 6103 9.38
80°F DB/67°F WB (52% RH) 10,613 7223 10.13 9749 6051 9.82
95°F DB/75°F WB (40% RH) 11,970 8783 10.00 11,161 7314 9.81
95°F DB/83°F WB (61% RH) 12,985 6021 10.79 11,973 5186 10.42
104°F DB/80°F WB (36% RH)** 12,603 9399 9.67 11,600 7917 9.35

Total Sensible EER* Total Sensible EER*

High Low

ELECTRICAL DATA***

Voltage/Phase/Hertz 115/1/60
Amperage 10.5
Fuse Size (Amps) 15
Watts 1196
Inrush Current (Amps) 69.7

COMPRESSOR (ROTARY)

Horsepower 0.75
Watts 845
RLA 7.4
LRA 44
RPM 3400
Refrigerant R-22

BLOWER (CONDENSER)

Speed

Amps 1.3 0.8
Watts 139 87
RPM 1570 1115
CFM @ 0.0" H2O E.S.P. 440 300

BLOWER (CONDENSER)

Speed

Amps 2.3 1.6
Watts 250 164
RPM 1090 780
CFM @ 0.0 E.S.P. 730 515
CFM @ 0.25 E.S.P. 610 450

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.

High Low

High Low

CONDENSATE PUMP (OPTIONAL)

Motor HP .0125
Lift (Ft. of H2O) 11.0
Amps .48
Watts 50

EVAPORATOR

Number of Rows 2
Coil Face Area (Ft.2) 1.5

CONDENSER

Number of Rows 3
Coil Face Area (Ft.2) 2.44

EVAPORATOR AIR FILTER SIZE (INCHES)

Width 15.125
Height 18
Thickness 0.5

CONDENSER AIR FILTER SIZE (INCHES)

Width 19.25
Height 16.5
Thickness 0.5

UNIT DIMENSIONS (INCHES)

(A) Height with Casters 34.25
(B) Height without Casters 31.125
(C) Length 25
(D) Depth 24

NET UNIT WEIGHT (LBS.) 182
SHIPPING WEIGHT (LBS.) 207

2

KOLDWAVE 2AK (AIRMASTER)

2AK1411M AIRMASTER PRODUCT DATA AND SPECIFICATIONS

COOLING CAPACITY (BTU/HR) & EER

Evaporator Fan Speed

Conditions

67°F DB/57°F WB (54% RH) 10,714 7736 9.44 9409 6216 8.86
72°F DB/60°F WB (50% RH) 11,200 8328 9.47 9933 6586 8.92
75°F DB/62°F WB (48% RH) 11,534 8538 9.49 10,238 6795 8.93
80°F DB/67°F WB (52% RH) 12,606 8375 9.92 11,262 6757 9.32
95°F DB/75°F WB (40% RH) 14,054 10,248 9.63 12,783 8069 9.20
95°F DB/83°F WB (61% RH) 14,917 6986 10.07 14,054 5902 9.88
104°F DB/80°F WB (36% RH)** 14,668 11,203 9.21 13,626 8725 8.95

Total Sensible EER* Total Sensible EER*

High Low

ELECTRICAL DATA***

Voltage/Phase/Hertz 115/1/60
Amperage 13.8
Fuse Size (Amps) 20
Watts 1563
Inrush Current (Amps) 79.7

COMPRESSOR (ROTARY)

Horsepower 1.0
Watts 1080
RLA 9.7
LRA 54
RPM 3400
Refrigerant R-22

BLOWER (CONDENSER)

Speed

Amps 1.4 0.8
Watts 134 89
RPM 1595 1053
CFM @ 0.0" H2O E.S.P. 400 265

BLOWER (CONDENSER)

Speed

Amps 2.3 1.6
Watts 250 164
RPM 1090 780
CFM @ 0.0 E.S.P. 730 515
CFM @ 0.25 E.S.P. 610 450

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.

High Low

High Low

CONDENSATE PUMP (OPTIONAL)

Motor HP .0125
Lift (Ft. of H2O) 11.0
Amps .48
Watts 50

EVAPORATOR

Number of Rows 3
Coil Face Area (Ft.2) 1.5

CONDENSER

Number of Rows 3
Coil Face Area (Ft.2) 2.44

EVAPORATOR AIR FILTER SIZE (INCHES)

Width 15.875
Height 18
Thickness 0.5

CONDENSER AIR FILTER SIZE (INCHES)

Width 19.25
Height 16.5
Thickness 0.5

UNIT DIMENSIONS (INCHES)

(A) Height with Casters 34.25
(B) Height without Casters 31.125
(C) Length 25
(D) Depth 24

NET UNIT WEIGHT (LBS.) 185
SHIPPING WEIGHT (LBS.) 210

3

KOLDWAVE 2AK (AIRMASTER)

STANDARD FEATURES/UNIT CONSTRUCTION

FEATURES

• Optional 10' flexible duct extends
up to 10 feet to vent condenser
air.

• Convenient control panel houses
on-off switch, thermostat and
indicator lights.

• Large, heavy-duty casters allow
you to move the Koldwave

®

Airmaster to virtually any location.

• Four way adjustable grilles
control air discharge for even,
comfortable cooling.

• Hinged panel allows easy access
to 5-gallon condensate holding
tank.

SERVICEABILITY

The Koldwave Airmaster has removable panels to
provide full service accessibility. The interior is divided
into three sections. The upper front face encloses the
evaporator coil and blower assembly. The lower front
section contains the electrical controls, which are
secured to the removable front panel, and the
condensate holding tank an its level detection system.
The rear section encases the compressor, condenser
coil and blower assembly.

Front Left

Side

1

4

3

Back

Right
Side

1. Evaporator Coil

5

2. Terminal Block Enclosure

3. Condensate
Holding Tank

4. Condenser Fan Motor

5. Fan Motor Capacitor

6. Condenser Coil

7. Compressor (Rotary)

9

8. Compressor Capacitor

9. Evaporator Blower

10. Casters

2

6

7

8

10

4

KOLDWAVE 2AK (AIRMASTER)

CABINET

The Koldwave Airmaster cabinet is constructed of 20
gauge, cold rolled steel with painted steel finish for
corrosion protection. It is lined with thermal and sound
absorbent insulation material in the discharge area
and vibration dampening on all panels.

SAFETY ENGINEERED

In addition to the rotary compressor’s overload
protection, Koldwave Airmaster incorporated, within
the refrigeration system a manual reset high pressure
switch for maximum safety of the compressor. The cut­out pressure setting is 375 ± 10 psig. In the event that
the high pressure switch setting is exceeded, the
compressor and condenser fan operation will cease.
The compressor and condenser fan can be restarted
by depressing the “reset” button located on the back
panel of the unit. The high pressure switch capillary
line screws onto an access valve on the refrigeration
discharge line to make it possible to remove or replace
a defective control without disturbing the refrigeration
system. The unit also employs an automatic reset
freeze control, located on top of condenser coil, to turn
the entire unit off at low ambients and defrost the
evaporator coil for approximately five minutes.

NOTE: Wait two minutes before restarting unit after
tripping by one of the safety features.

Back

RELIABLE CONTROLS

The self-contained unit maintains the desired amount
of cooling, which can be selected by adjusting the
thermostat to warmer or cooler. The thermostat
sensing bulb is in the return air stream behind the
louvered return air grille and return air filter. The range
of the thermostat is from 65-100° with a differential of
± 3°F.

Rear of

Front Panel

Thermostat
Bulb

The three-position, mode selector rocker switch,
located in the front panel, has three functions:

1. To provide fan only operation when depressed to
the right.

2. To turn the unit off when set in the center position.

3. To activate the cooling mode when depressed to
the left.

1. Nameplate

2. H.P.C. Reset Button

3. Condenser Filter

4. Service Cord

1

2

3

The blue colored light above the thermostat indicates
the thermostat is calling for cooling mode operation.
Compressor may or may not be on, depending on the
thermostat setting. The red, “tank full” warning light
indicates condensate tank is full and needs to be
emptied. The two-position, fan-speed rocker switch,
located below the mode selector switch, provides high
fan speed when depressed to the right and low speed
when depressed to the left.

Mode
Selector
Switch

Cooling Mode
Indicator (Blue)

Tank Full
Indicator (Red)

4

Thermostat

Fan
Speed
Switch

Convenient Control Panel

5

KOLDWAVE 2AK (AIRMASTER)

CONDENSATE RESERVOIR TANK

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 cut­out switch 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
condensate level where the unit cuts out. Turn screw
clockwise to lower water level and thus decrease the
tank’s weight for emptying. To prevent spillage, the
tank is equipped with a cap, which is chained to the
top of the tank, and a vent for easy drainage.

CAUTION: Turn unit off before emptying tank when
tank light is illuminated.

DISCHARGE AIR GRILLES

The Koldwave Airmaster is equipped with (4) 5" x 5",
four-way adjustable, plastic grilles, located in the upper
front panel, enabling a variety of air flow possibilities.
Pull out each black grille (approximately 3/4") and
rotate to the desired position. Release the grille and
allow it to return to the set position within the cabinet.
By this means, air flow can be positioned in any four
directions.

Adjustable
Air Grilles

SERVICE CORD

The six foot service cord employed in Model
2AK1411M will not fit in the standard household
receptacle. Required is a 20A-125 volt NEMA 5-20
receptacle. Model 2AK1011 uses a standard 15 amp
plug.

PLUG END TERMINATION

JACKET

RECEPTACLE
20A - 125V
NEMA 5-20R

6

KOLDWAVE 2AK (AIRMASTER)

AIR FILTERS

The Koldwave Air master employs two, 1/2" thick,
washable aluminum mesh air filters, located behind
the louvered front (evaporator) panel and beneath the
back (condenser) panel. The evaporator filter can be
easily removed and cleaned; just pull the filter end cap
at the bottom of filter and slide out. The condenser
filter is removed by lifting the tab at bottom of filter,
then pulling toward you and down.

ELECTRICAL

Electrical control is concentrated in an enclosed area
behind the control panel. Electrical interconnection is
achieved via a multi-position terminal strip located in a
junction box fastened to the bulkhead wall.

1

2

3

4

GENERAL AIRFLOW PATTERNS

Condenser air is drawn in through the lower rear
section of the unit and passes through the condenser
coil and extracts heat. The hot air is blown out the
upper exhaust air opening. Evaporator air is taken
through the lower, front, louvered panel and is cooled
by the evaporator coil. It’s then blown in through four,
adjustable, four-way grilles, enabling a variety of
airflow possibilities. Both condenser and evaporative
air inlets are provided with filters.

1. Evaporator Fan Motor

2. Control Enclosure

3. Terminal Block Enclosure

4. Condensate Pump Assembly (Optional)

7

KOLDWAVE 2AK (AIRMASTER)

ACCESSORIES

8

KOLDWAVE 2AK (AIRMASTER)

CEILING PANEL/DUCT KIT ASSEMBLY
(OPTIONAL)

A 10" diameter, flexible duct kit assembly extends up
to 10 feet, to vent condenser air or to draw condenser
return air from the ceiling when condenser return air
plenum is used. It comes with 2' x 2' lay-in ceiling
panel/collar assembly, for venting into the plenum area
above the false ceiling, plus a duct collar to attach duct
to 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 other end over the unit
duct collar.

2. Clamp duct to lay-in ceiling panel/collar assembly
and unit duct collar (see “Duct Design” for details.

3. Place the 2' x 2' lay-in ceiling panel in the false
ceiling directly above the unit.

4. Screw duct collar to unit with four screws provided.

9

KOLDWAVE 2AK (AIRMASTER)

DUCT DESIGN
Condenser Duct

Should a longer 10" diameter duct be needed on the
condenser discharge, 10 foot flexible ducts may be
coupled together up to a maximum equivalent length
of 60 feet (allow 6 feet for every 90° bend).

10" Diameter Duct Clamp SA019-A-067

Duct Clamps

Two 10" diameter wire duct clamps are used to secure
the condenser air exhaust duct to the lay-in ceiling
panel/collar assembly and the Koldwave Airmaster
exhaust duct collar.

DISCHARGE AIR SNOZZLE® KIT ASSEMBLY
(OPTIONAL) SA040-D-028

A 20 gauge painted steel air discharge snozzle
mounting plate assembly can be furnished as an
optional item. Its purpose is to accommodate various
spot cooling applications, where air can be aimed and
concentrated on the object to be cooled. The plate is
designed with two 4" diameter, 16" compressed and
22" long extended flexible air duct snozzles®. The use
of the snozzles® will derate the capacity by
approximately 13%. The snozzle® plate is mounted
over the evaporator air discharge opening by 1/4 turn
Pawl Latch fasteners for each removal. It is secured in
place by tightening the four fasteners provided with the
plate assembly. It can be removed easily by tur ning
the fastener on quarter turn counter-clockwise.

3

5

®

4

2

1. 1/4 Turn Pawl
Latch Fasteners

2. Mounting Plate

3. Snozzle Caps

4. Insulation

5. Snozzle Duct

1

10