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KNHE48 Water-to-Air
Panel-Mounted Heat Exchangers
Download
Product
Information
TECHNICAL DATA
Click to
Request
Quote
Model
Volts
Power
Maximum
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.)
Amps
Watts
1GPM
2GPM
3GPM
4GPM
1GPM
2GPM
3GPM
4GPM
KNHE48
115
2.2
255
85 (29)
90
135
150
165
13,819 (4,050)
20,729 (6,075)
23,032 (6,750)
25,335 (7,425)
89
K2NHE48
230
1.1
255
85 (29)
90
135
150
165
13,819 (4,050)
20,729 (6,075)
23,032 (6,750)
25,335 (7,425)
89
60 Hz. operation. For 50 Hz. operation, consult Kooltronic.
Click on image for larger view
NEMA
TYPE 4/4X
MAINTAINED
TECHNICAL DATA
Click to
Request
Quote:
Model
Number:
KNHE48
K2NHE48
Volts:
115
230
Power, Amps:
2.2
1.1
Power, Watts:
255
255
Max Inlet Water
Temp. °F(°C):
85 (29)
85 (29)
Perforamce, Watts/°F
(Air in), 1GPM:
90
90
Perforamce, Watts/°F
(Air in), 2GPM:
135
135
Perforamce, Watts/°F
(Air in), 3GPM:
150
150
Perforamce, Watts/°F
(Air in), 4GPM:
165
165
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.):
89
89
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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PERFORMANCE
GENERAL ARRANGEMENT
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GENERAL ARRANGEMENT
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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
Model
Guideline
Dimensions
(H x W x D)*
Watts/°F
KNHE20
20.00 x 10.14 x 4.31
20
KNHE24
24.00 x 10.50 x 7.56
33
KNHE28
28.75 x 11.62 x 11.63
42
KNHE30
30.00 x 12.50 x 10.95
58
KNHE32
32.00 x 15.50 x 11.04
80
KNHE60
61.87 x 20.26 x 9.37
100
*See model specifics for drawings, dimensions, mounting or cutout plans.
DOCUMENTS
Data Sheet
KLLC100-480 Lead-Lag Controller Product Data Sheet
KNHE48 Data Sheet
GA Drawing
KNHE48 General Arrangement Drawing
Installation Instructions
KNHE48 Installation Instructions (2 pages)
Literature
Condensate Evaporator Kits
Increasing the Lifespan and Reliability of Electrical Components
KLLC100 Lead-Lag Controller (1 page)
Kooltronic Design Guide/Catalog (215 pages)
Kooltronic Standard Warranty
NEMA Enclosure Ratings
Short-Form Catalog (16 pages)
Airflow Switch Data Sheet
Heat Exchanger Quick-Sheet
Operator's Manual
KLLC100 Lead-Lag Controller
KLLC480 Lead-Lag Controller
KNHE48 Operator's Manual
