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KNHE48 Water-to-Air
Panel-Mounted Heat Exchangers

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Product
Information
TECHNICAL DATA

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Quote
ModelVoltsPowerMaximum
Inlet
Water
Temp. °F
Performance
Watts/°F
(Air In)
BTU/H (Watts) @
95°F(35°C) Enclosure Air Temp.
50°F(10°C) Inlet Water Temp.
Approx
Weight
lbs.
(kg.)
AmpsWatts1GPM2GPM3GPM4GPM1GPM2GPM3GPM4GPM
KNHE481152.225585 (29)9013515016513,819 (4,050)20,729 (6,075)23,032 (6,750)25,335 (7,425)89
K2NHE482301.125585 (29)9013515016513,819 (4,050)20,729 (6,075)23,032 (6,750)25,335 (7,425)89
60 Hz. operation. For 50 Hz. operation, consult Kooltronic.

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KNHE48 Heat Exchanger photo
NEMA TYPE 4/4X
MAINTAINED

TECHNICAL DATA

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Request
Quote:
Model
Number:
KNHE48K2NHE48
Volts:115230
Power, Amps:2.21.1
Power, Watts:255255
Max Inlet Water
Temp. °F(°C):
85 (29)85 (29)
Perforamce, Watts/°F
(Air in), 1GPM:
9090
Perforamce, Watts/°F
(Air in), 2GPM:
135135
Perforamce, Watts/°F
(Air in), 3GPM:
150150
Perforamce, Watts/°F
(Air in), 4GPM:
165165
BTU/H (Watts) @
95°F(35°C) Enclosure Air Temp.
50°F(10°C) Inlet Water Temp, 1GPM:
13,819 (4,050)13,819 (4,050)
BTU/H (Watts) @
95°F(35°C) Enclosure Air Temp.
50°F(10°C) Inlet Water Temp, 2GPM:
20,729 (6,075)20,729 (6,075)
BTU/H (Watts) @
95°F(35°C) Enclosure Air Temp.
50°F(10°C) Inlet Water Temp, 3GPM:
23,032 (6,750)23,032 (6,750)
BTU/H (Watts) @
95°F(35°C) Enclosure Air Temp.
50°F(10°C) Inlet Water Temp, 4GPM:
23,032 (6,750)23,032 (6,750)
Approx. Weight lbs.(kg.):8989
60 Hz. operation. For 50 Hz. operation, consult Kooltronic.

STANDARD FEATURES

  • Closed-Loop Cooling
    • The enclosure interior airflow system is isolated from the ambient airflow or waterflow system. No ambient air can invade the cool, dehumidified sensitive component compartment.
  • Epoxy-Coated Heat Exchanger Coils
    • Heat Exchanger Coils are epoxy-coated. This coating will withstand 1000 hours of salt spray per the ASTM B 117 test method. Also see Stainless Steel Cabinet or Integrity NEMA 4/4X Air Conditioners. NOTE: Severe operational environments such as waste water treatment and salt spray are likely to cause corrosion failure over a period of time regardless of coating. Warranty: Corrosive conditions may affect the warranty coverage. Consult factory for warranty limitations in corrosive environments. NOTE: For additional corrosion protection options, contact factory.
  • NEMA 4/4X Rating Maintained (UL50)
    • All units are fully gasketed for tight, leakproof installation, in compliance with the NEMA 4 and 4X Enclosure Ratings.
  • Stainless Steel Shell
    • For applications in corrosive or other hostile environments such as those requiring Internal Corrosion Resistant Coatings, especially where chemical/moisture combinations are present.
  • UL/CUL Listed

ACCESSORIES AND OPTIONS

  • Automatic Water Flow Control
    • This control consists of a temperature control thermostat and a solenoid valve. When the temperature within the enclosure drops below the thermostat set point due to decreased load or decreasing water temperature, the thermostat closes the solenoid valve. When the temperature increases to the set point (plus a differential) the thermostat opens the solenoid valve and the supply water cools the enclosure. In most models the Automatic Water Flow Control also includes a bypass flow meter which allows a small amount of water (0.25 gpm) to pass through the heat exchanger at all times.
  • High Water Level Detector
    • Closes water-supply valve to prevent flooding if excess water accumulates in the drain pan. Signal circuit activates a user-supplied warning device. The low voltage power for the signal circuit is supplied by the user.
  • Internal Corrosion Protection
    • This protection increases reliability in hostile environments. This protection for the refrigeration system consists of an air cured coating applied to the brazed joints on the condenser side, providing a degree of protection from corrosive environments. This coating will withstand 1000 hours of salt spray per the ASTM B 117 test method. Also see Stainless Steel Cabinet or GuardianX Air Conditioners. NOTE: Severe operational environments such as waste water treatment and salt spray are likely to cause corrosion failure over a period of time regardless of coating. Warranty: Corrosive conditions may affect the warranty coverage. Consult factory for warranty limitations in corrosive environments. NOTE: For additional corrosion protection options, contact factory.
  • Low Airflow Detector
    • Similar to the Airflow Switch shown in the Blower Accessories Section, the switch is installed in a suitable location in the air conditioner to detect loss of airflow, and sends a signal to a terminal block, through which user-installed wiring and warning devices are activated.
  • Other voltages and frequencies
  • Special materials or finishes
  • Special motors, line cords or connectors
  • Temperature Alarm
    • A thermostat is mounted inside the cabinet and attached to a sensor in the warm air return. When the air temperature increases to the set point, a signal is sent to a terminal block. User-installed wiring from the terminal block to local and/or remote warning devices (light, bell, siren, etc.) can be for normally open or closed operation.

AIRFLOW
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KNHE48 Heat Exchanger isometric illustration

PERFORMANCE

KNHE48 Heat Exchanger performance chart

GENERAL ARRANGEMENT
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KNHE48 Heat Exchanger general arrangement drawing
GENERAL ARRANGEMENT
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KNHE48 Heat Exchanger general arrangement drawing

Many popular units are available as 3D solid models for customer system integration. Contact Kooltronic for details.
HOW TO ORDER
Specify model number. For 230 VAC operation, add a 2 after the K. Example: K2NHE48.

SIMILAR MODELS

ModelGuideline
Dimensions
(H x W x D)*
Watts/°F
KNHE2020.00 x 10.14 x 4.3120
KNHE2424.00 x 10.50 x 7.5633
KNHE2828.75 x 11.62 x 11.6342
KNHE3030.00 x 12.50 x 10.9558
KNHE3232.00 x 15.50 x 11.0480
KNHE6061.87 x 20.26 x 9.37100
*See model specifics for drawings, dimensions, mounting or cutout plans.

DOCUMENTS

  • Data Sheet
    KLLC100-480 Lead-Lag Controller Product Data Sheet [58Kb]
    KNHE48 Data Sheet [368Kb]
  • GA Drawing
    KNHE48 General Arrangement Drawing [74Kb]
  • Installation Instructions
    KNHE48 Installation Instructions (2 pages) [163Kb]
  • Literature
    Condensate Evaporator Kits [241Kb]
    Increasing the Lifespan and Reliability of Electrical Components [212Kb]
    KLLC100 Lead-Lag Controller (1 page) [58Kb]
    Kooltronic Custom Capabilities Flyer [2194Kb]
    Kooltronic Design Guide/Catalog (215 pages) [24440Kb]
    Kooltronic Refrigeration System Manufacturing [55Kb]
    Kooltronic Standard Warranty [55Kb]
    NEMA Enclosure Ratings [91Kb]
    Short-Form Catalog (16 pages) [897Kb]
    Airflow Switch Data Sheet [159Kb]
    Heat Exchanger Quick-Sheet [90Kb]
    Laboratory Environmental Testing Services [157Kb]
    Powder Paint Application Facilities Flyer [165Kb]
  • Operator's Manual
    KLLC100 Lead-Lag Controller [38Kb]
    KLLC480 Lead-Lag Controller [79Kb]
    KNHE48 Operator's Manual [295Kb]
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30 Pennington-Hopewell Road
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