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IX. Standard Warranty

THIS WARRANTY CONSTITUTES THE ENTIRE WARRANTY WITH RESPECT TO THE PRODUCT AND IS IN
LIEU OF ALL OTHERS, EXPRESSED OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY
AND WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE AND IN NO EVENT IS KOOLTRONIC
RESPONSIBLE FOR ANY CONSEQUENTIAL DAMAGES OF ANY NATURE WHATSOEVER.

RETURN AUTHORIZATION (RA) PROCEDURE

KOOLTRONIC products are warranted to be free of defects
in workmanship, materials and components. The following
warranty periods apply from date of shipment:

Air moving devices/components and hermetic system
components: 1 year 

Spare parts, except filters: 90 days

The above warranty applies when the equipment is operated
under the following conditions:

Ambient temperature not in excess of 125°F (52°C) in
normal atmosphere or as stated on product nameplate

Voltage variation no greater than ±  10% from nameplate
rating

Frequency variation no greater than ± 3Hz from nameplate
rating

Maximum cooling load no higher than air conditioner
nameplate rating

Waiting five minutes before restarting air conditioner after
intentional or accidental shutoff

Compliance to all other installation, maintenance and
operating instructions, as supplied

The purchaser assumes the responsibility of grounding
the unit and installing it in accordance with local electrical
and safety codes, as well as the National Electric Code
(NEC) and OSHA

KOOLTRONIC cannot assume responsibility for
mis-application of its products or the erroneous
selection of an inappropriate product by a non-
authorized KOOLTRONIC representative . Our
applications engineers will gladly assist in the
selection of the proper product, provided all
required details of the application are furnished.

All returns require a Return Authorization number whether
the return is for warranty or non-warranty repair, rotation of
stock, damage or any other reason. Returns without an RA
number will be refused.

Customer must call KOOLTRONIC After Sale Kare (ASK),
Pennington, New Jersey (609 • 466 • 3400) to obtain an RA
number, or email [email protected].

The following information is required when an RA is
requested:

- Original customer Purchase Order number and date
- Date product 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 in a suitable container for shipment, preferably the

original packaging if available. All Heat Exchangers must
be returned in an upright position properly secured to a
pallet. 

Improper packaging may void warranty claim.

If

a Heat Exchanger is received laying down or shipped via
UPS or similar small parcel service the warranty will be void.

Mark carton prominently with KOOLTRONIC’s Return
Authorization Number.

Enclose all pertinent documents.

Freight charges on all products returned to KOOLTRONIC
shall be paid by the customer. Unauthorized collect shipments
will be refused.

If a unit is repaired under Warranty, KOOLTRONIC will pay
the freight charges both ways within the Continental USA
at KOOLTRONIC’s negotiated rates. Warranty repaired
units will be returned to customer at KOOLTRONIC expense
only within the Continental USA.

All authorized returns are subject to a restocking fee.

KOOLTRONIC assumes no liability beyond the repair or
replacement of its own product. This Warranty does not
cover:

Labor or reimbursement of labor for evaluation, removal,
installation, repair, or cost of any warranted part, unless
authorized in writing by KOOLTRONIC

Use of equipment for other than its designed purpose or
operating conditions

Operation in harsh, oily, corrosive or other abnormal
environmental conditions, without the proper filtration,
sealing, protective coatings and/or weather protection

Damage to hermetic system resulting from continuous
operation with dirty or clogged air filters or improper or
negligent maintenance

Use of refrigerant other than designated

Customer modification or abuse

Shipping damage or other accident (Claims for shipping
damage are the responsibility of the customer. Timely
claims must be filed by the customer with the freight carrier)

Cracked or broken hermetic tubing, brazed joints or  other
internal damage caused by shipping or mishandling

Damage caused by shipping units attached to an
enclosure

Any and all conditions resulting from noncompliance with
the preceding operating conditions

Returned freight must be paid by customer

This standard warranty does not apply to custom
products. Consult your KOOLTRONIC representative
for limitations

8

Summary of Contents for KNHE28 Series

Page 1: ...AT EXCHANGER IT IS IMPORTANT THAT THIS MANUAL BE READ AND UNDERSTOOD THOROUGHLY KOOLTRONIC INC 30 Pennington Hopewell Road Pennington NJ 08534 609 466 3400 FAX 609 466 1114 www kooltronic com 900 046 15 7 20 CDR 20272 Find additional information on this model at kooltronic com or use the Technical Documents QR code below Technical Documents ...

Page 2: ... Introduction Kooltronic Heat Exchangers are designed to provide a cool environment for your electronic or electrical components There are models to fit virtually all sizes and shapes of electrical or electronic enclosures Our closed loop design also ensures that your components will not be exposed to hot dirty operating conditions This Manual provides you with the necessary general information fo...

Page 3: ...er until you read and thoroughly understand this Manual Before operating this unit all electrical wiring must be checked to assure the proper connections IV Product Identification and Nameplate Each Kooltronic Heat Exchanger includes an identification nameplate This nameplate provides CAUTION Operate this unit only on the proper voltages and frequencies as noted on the nameplate Model Number Seria...

Page 4: ...anger with options Automatic Water Flow Control and Heater is shown on Figure 2 Heated Air Blower Water with Heat Load Cold Water Heat Exchanger Cabinet Cooled Air WATER TO AIR A Water to Air Heat Exchanger works by transferring heat of internal air to circulating water resulting in chilled air which is recirculated throughout the electronics or electrical cabinet The Adjustable Water Control Ther...

Page 5: ...crews nuts washers 6 Attach overflow drain hose supplied to the drain exit at the bottom of the unit This hose must not be elevated above the exit port Improper mounting may impede the flow of condensate and may cause internal malfunctions 7 Attach supply line to 3 8 O D copper tubing Inlet on the side of unit 8 Attach discharge line to 3 8 O D copper tubing Outlet on the side of unit Mounting Pla...

Page 6: ...AT AIR FLOW SWITCH BLOCK TERM TSTAT CONT OPTIONS Wiring Diagram WD 394 NOTE Part Numbers shown are for 60Hz 1Ø For 50Hz consult Kooltronic Technical Data 60 Hz operation For 50 Hz operation consult Kooltronic Model Volts Power Amps Watts Maximum Inlet Water Temp ºF ºC Performance Watts ºF Watts ºC 1 GPM 2 GPM BTU H Watts 95ºF 35ºC Enclosure Air Temp 50ºF 10ºC Inlet Water Temp 1 GPM 2 GPM Approx We...

Page 7: ...ing of Major Component Replacements earlier in this manual VIII Packing Procedure Keep Heat Exchanger in proper upright position Pack Heat Exchanger in an appropriate carton preferably original carton if possible with adequate internal protective packaging making sure carton is marked properly For local controlled transportation strap carton where possible to a secure part of truck to prevent fall...

Page 8: ...s 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 in a suitable container for shipment preferably the original packaging if available All Heat Exchangers must be returned in an upright position properly secured to a pallet Improper packaging may void wa...

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