Kelvin RH015 User manual

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INSTALLATION,
OPERATION AND
MAINTENANCE MANUAL
FOR MODEL RH
REMOTE HORIZONTAL
AIR COOLED
HEAT EXCHANGERS
5050 South National Dr.
Knoxville, TN 37914
Telephone: [phone]

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MODEL RH
REMOTE HORIZONTAL AIR COOLED
HEAT EXCHANGERS
TABLE OF CONTENTS
TOPIC PAGE
Model Nomenclature ..................................................................................... 2
Inspection....................................................................................................... 2
Handling and Moving.................................................................................... 2
Location ......................................................................................................... 3
Assembly of Unit........................................................................................... 3
Electrical Wiring............................................................................................ 5
Piping............................................................................................................. 5
Start-Up and Operation.................................................................................. 5
Freeze Protection ........................................................................................... 5
Maintenance................................................................................................... 6
Replacement Parts.......................................................................................... 7

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MODEL NOMENCLATURE
INSPECTION
Upon receiving the equipment, all items should be checked against the bill of lading to
ensure that everything has been received. The entire unit should then be carefully inspected for
damage. Any visible or concealed damage should be immediately reported to the carrier and a
damage claim filed. Also, the unit nameplate should be checked to make sure the unit
construction and electrical characteristics match the order specifications. Any discrepancy
should be immediately called to the attention of Kelvion.
HANDLING AND MOVING
The exact method of handling and moving a unit depends upon the size of the unit, final
location, available equipment and other variables. To facilitate ease of handling and shipping,
each unit is made and shipped in modules; one module for the RH-035 and RH-045, two
modules for the RH-055, RH-070 and RH-085. And, as a preventative measure to guard against
transportation damage, each module is shipped on its side with the legs removed and crated on
heavy duty skids. It is advisable to move the modules as close as possible to its final location
before uncrating. It is up to the unit riggers and movers as to what method they use to handle a
unit.
RH units are provided with lifting lugs in all four corners of each module. Modules can
also be lifted with properly sized slings. Reference Figures 1a and 1b for suggested lifting
methods. Note: Only individual modules should be lifted, not a completely assembled unit with
both modules of a unit.
Fig. 1a
Lifting an RH module by
the lifting lugs
Motor HP
RH 035 –2B –4P
Nominal Coil Face Area, FT²
Horizontal
Number of Passes
Round Tube
Motor RPM
A - 870
B - 1160
C - 1750
D - 730
E - 970
F - 1450

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Fig. 1b
Lifting an RH module with slings.

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NET DRY WEIGHT –LBS. (Kg.)
Model Number
Module Weight
Total Weight
RH015
RH025
RH035
RH045
RH055
RH070
RH085
RH105
475 (215)
950 (432)
1200 (544)
1475 (669)
950 (431)
1200 (544)
1475 (669)
1200 (544)
475 (215)
950 (432)
1200 (544)
1475 (669)
1900 (862)
2400 (1089)
2950 (1338)
3600 (1636)
LOCATION
The RH Models are designed for outdoor use and if installed indoors precautions
should be taken to ensure a free flow of air to and from the unit and to prevent recirculation of
the heated exhaust air from the unit back into its intake stream. It is also important to locate the
unit no closer than one unit width from a wall, another unit, or any other obstruction which
would restrict air movement.
ASSEMBLY OF UNIT
RH Models are shipped completely assembled, except for the mounting legs. Mounting
legs are furnished with the necessary bolts, nuts and washers. The legs are not adjustable and are
most easily assembled to the unit when the unit is still laying on its side as shipped. Each leg is
fastened to the bottom of the coil plenum by four bolts furnished with the unit, Reference
Figure 2.
The larger RH Models (RH055 and up) are delivered as two separate modules which
must be joined together to make the total unit. After the legs have been attached to each module,
the modules should be moved as close as possible to each other side by side on the mounting
pad; moving the modules in accordance with the instructions given under Handling and Moving.
The modules should then be placed together with the joining channel placed between the inside
legs and bolted in place, Figure 3. The joining channel and necessary bolts, nuts and washers are
supplied with the unit.

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After the legs have been attached and the unit has been moved into place check to make
sure the coil is level to ensure proper coolant drainage. If it is level bolt the unit to its
foundation.
ELECTRICAL WIRING
The electrical installation should be in accordance with National Electrical Code, local
codes and regulations. Proper fuse protection, starters, disconnect switches, etc., for the fan
motors must be provided in the field.
Electrical leads from each motor terminate at the unit junction box. Field connections
must be made from these leads thru a starter, fuse and disconnect in accordance with local, state
and national codes.
Three phase motors must be connected to three-phase power and voltage to agree with
motor nameplate.
PIPING
The design of the RH air-cooled heat exchangers is such that the cooling coil can be
either single or multi-pass. In a single pass unit, the coolant journeys only once through the coil.
Connections are made to the male NPT connectors on one end of the unit and the outlet
connections are made at the other end of the unit. If the unit is multi-pass the inlet connections
should be made to the higher of the two openings supplied per module, the outlet connection is
made with the lower of the openings. This piping arrangement is necessary to insure a cross-
counterflow coolant passage thru the unit for maximum heat transfer.
In most RH applications a surge tank is recommended to maintain a safe coolant level in
the system and allow entrained air to escape from the coolant.
START-UP AND OPERATION
Check all electrical connections to be sure that they are secure and safe. Start fan motors
and check each fan for proper rotation. Proper rotation should be counterclockwise looking from
beneath the unit. The air is discharged vertically through the top of the unit.
Check all fluid connections for leaks after filling and pressurizing the system.
After the above items are checked unit may be started and put into operation.
FREEZE PROTECTION
When installed in areas where freezing temperatures occur, precautions must be taken for
adequate anti-freeze protection of the radiator to prevent damage. Normal protection consists of
a 50% Ethylene Glycol and H2O solution. Water used should be neutral or slightly alkaline with
a PH of eight or more. Water should be treated with a reputable inhibitor to forestall corrosion.
The antifreeze and the inhibitor must be compatible.

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MAINTENANCE
The RH Models are relatively maintenance free. Electric motor bearings are
prelubricated and should be lubricated as shown below.
Relubricate Intervals
The following intervals are suggested as a guide.
Hours of Service Per Year
Suggested Relube Interval
5000
Every 5 years
Continuous
Normal Application
Once a year
Continuous
In high ambient, or dirty or moist location; or
where motor is idle for six months or more,
and applications with high vibration or where
shaft end is hot (pumps –fans).
Every 6 months
Lubricant
Use high grade ball bearing grease. Use consistency of grease suitable for class of
insulation stamped on nameplate, as follows:
Insulation
Class
Consistency
Type
Typical Grease
B or F
#3
Lithium Base
Shell Cyprina #3
Procedure
If motor is equipped with Zerk fitting, clean tip of fitting and apply grease gun. Use one
to two full strokes on motors.
CAUTION
Keep grease clean! Do not mix petroleum grease and silicone grease in motor bearings.
The cooling coils may become clogged with leaves, paper, incineration ash or other
airborne dirt. Normal rainfall will generally clean the coil, but if not, clean with compressed air
or if oil is involved in the fouling use steam.

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REPLACEMENT PARTS
If it becomes necessary to order parts, please mention all identifying numbers, such as
model number or part number as found on the Kelvion nameplate.