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6

VI. Principles of Operation

Kooltronic HL Series Air Conditioners are designed for Class I, Division 1 and Division 2 and Class I, Zone 1 and Zone 2
applications. They are used only when installed on pressurized customer enclosures and connected to a pressurized
enclosure Purge/Pressurized Control System.
When Kooltronic HL Series Air Conditioners are installed on Class I customer enclosures, before operating they must
be purged simultaneously with the pressurized customer enclosure according to the purge protocol for that pressurized
enclosure. 
The Purge/Pressurized Control System has to be selected by first taking into account the Kooltronic HL Series Air
Conditioner volume and air leakage (these parameters are specified in the Technical Data on page 15), in addition to the
volume and air leakage of the pressurized customer enclosure. The Kooltronic HL Series Air Conditioner and the
pressurized customer enclosure must be connected to the Purge/Pressurized Control System by gas (air) lines in
parallel.

The Kooltronic HL Series Air Conditioner must be powered from the pressurized customer enclosure power supply, and
the customer enclosure must be controlled by the Purge/Pressurized Control System.
All electrical and electronic components in the Kooltronic HL Series Air Conditioner are located in the pressurized
evaporator enclosure.
Mechanical components, including the condenser blower housing and wheel, are made of aluminum, and are installed
in the condenser compartment, exposed to ambient air. The condenser blower motor shaft extends from the evaporator
compartment to the condenser compartment, and is sealed by a set of PTFE V-rings.
If condensate occurs in the Kooltronic HL Series Air Conditioner it will be removed through a drain line. In order to prevent
pressurized gas (air) loss, the condensate drain system utilizes a floating type gate valve.

K_A6C6HL40LV AIR LEAKAGE

A

I

R

L

E
A

K

A

G

E

C
F
M

0.6

0.5

0.4

0.3

0.2

0.1

0

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

1.1

1.2

 i.w.g.

Summary of Contents for K2A6C6HL40LV

Page 1: ...BE READ AND UNDERSTOOD THOROUGHLY KOOLTRONIC INC 30 Pennington Hopewell Road Pennington NJ 08534 609 466 3400 FAX 609 466 1114 www kooltronic com 900 039 74 1 18 CDR 20053 HAZARDOUS LOCATION SERIES K...

Page 2: ...oting 17 18 XII Warranty 19 NOTE Wiring Schematics are available on the specific model page of the Kooltronic website I Introduction Kooltronic Hazardous Location Air Conditioners HL Series are design...

Page 3: ...nimum of 5 minutes prior to operating in order to allow the compressor oil to drain to the compressor sump area CAUTION 3 Before operating this unit all electrical wiring must be checked to assure the...

Page 4: ...R USE WITH CLASS I DIVISION 1 GROUPS A B C AND D HAZARDOUS LOCATIONS TYPE X PURGE AND CLASS I DIVISION 2 GROUPS A B C AND D TYPE Z PURGE ENCLOSURES WHEN INSTALLED ON AN APPROVED PRESSURIZED ENCLOSURE...

Page 5: ...of combustible materials or unless all devices within have been de energized WARNING HIGH TEMPERATURE INTERNAL PARTS This Air Conditioner must not be opened unless the area atmosphere is known to be b...

Page 6: ...urized customer enclosure must be connected to the Purge Pressurized Control System by gas air lines in parallel The Kooltronic HL Series Air Conditioner must be powered from the pressurized customer...

Page 7: ...ter consists of a heater a heat control thermostat and a heater limiter The heater control thermostat is a bimetal disk with a fixed set point of 60 F When the entering evaporator air temperature rise...

Page 8: ...the new set point value push the SET key again or wait 10 seconds HOW TO CHANGE A PARAMETER VALUE To change a parameter s value operate as follows 1 Enter the Programming mode by pressing the SET plu...

Page 9: ...p code 7 0 65535 rEL Software release 0 rSE Real set point 0 onF on off key enabling ES PbC Kind of probe ntc Adr Serial address 1 1 247 HES Differential for energy saving 0 F 54 54 rrd Regulation res...

Page 10: ...charge ports The cool air discharged should be less than 70 F when the room temperature is between 70 F and 80 F It is normal for the condenser blower to cycle on off during this period 9 Reset the th...

Page 11: ...to the enclosure The contact closure may be used with their control system having a timer function and output signal The output signal would energize a solenoid valve equipped with a fixed orifice or...

Page 12: ...r the bottom of the air conditioner 5 The customer must connect the Purge Pressurized System control line to the Swagelok fitting B400 1 OR 1 4 inch NPT The customer has a choice of two connection fit...

Page 13: ...10 30 261 6 10 30 261 6 1 11 28 1 33 8 5 TYP 1 2 4 70 119 4 68 17 3 23 5 8 23 5 8 23 5 8 4 67 118 5 6 00 152 4 6 00 152 4 6 00 152 4 6 00 152 4 6 00 152 4 4 67 118 5 MOUNTING PLAN Dimensions inches me...

Page 14: ...TEMPERATURE ALARM TERMINAL BLOCK THERMOSTAT ON OFF SWITCH POWER CORD PRESSURE COMPENSATION TERMINAL BLOCK 3 8 OD DRAIN PURGE PRESSURE FITTING 1 4 NPT 3 8 OD DRAIN 1 2 3 3 4 K_A6C6HL40LV Dimensions inc...

Page 15: ...ass I Zone 2 Groups IIA IIB plus hydrogen and IIC Hazardous Locations when used with an approved Type Z Purge System on the electrical enclosure Temperature Classification is T 4 275 F 135 C Maintains...

Page 16: ...ed under warm running water with clean side up If the accumulated dirt is oily washing in a detergent bath is recommended followed by a warm water wash as above After filter removal the exposed conden...

Page 17: ...ent controller or enclosure see below Removing Air Conditioner from Pressurized Enclosure Conform to the applicable provisions of PROCEDURE FOR PROPER PACKING AND SHIPMENT OF KOOLTRONIC AIR CONDITIONE...

Page 18: ...ondensate Eliminate the frequency of door openings draining and loss of A C sensible cooling performance Unit overcooling Failed Thermostat Check Thermostat wire connections Evaporator Blower Condense...

Page 19: ...was received by customer Number of parts to be returned Product description model and serial number Reason for return Action requested Contact name telephone FAX numbers and e mail address Pack unit...

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