Installation, Operation and Maintenance Manual
VertiCool Classic
15
Subject to change without notice.
20.10-IM (0617)
evaporator� The jack stands, if required, will be placed inside
the air side economizer section� The mounting hardware will
be attached to the jack stand flange.
The enthalpy sensors for the return air and the outside air
are shipped loose for field mounting. Follow the instructions
with each sensor for the proper location and mounting�
Field supplied low voltage wiring must be installed between
the two sensors and the terminal blocks located in the unit
control panel� Make sure to use the correct type and wire
gauge size�
When ducting to the air side economizer, flexible duct collars
should be utilized to avoid any transmission of vibration into
the duct work�
Split Systems
Systems can be field modified as a split system option.
Evaporator Mounting
In some situations it is necessary to install the system split�
The evaporator section may be supplied with the lower
section for floor mounting. The evaporator can also be
supplied as a standalone section�
When being used as a standalone evaporator section, care
must be taken to properly support the section if suspended�
It is advisable to provide a full perimeter frame to assure that
the sheet metal does not buckle�
Provide field supplied and installed vibration isolation as
required�
Care must be taken when mounting the evaporator to assure
that adequate service clearance is provided for access to
the components� Make sure that the access panels can be
removed�
The evaporator section will have a control panel� Dependent
upon the system components this control panel may be
located internal to the evaporator or externally� Wire high
and low voltage to this section as required following National
Electrical Codes or Local Codes�
INFORMATION
Make sure to use the appropriate gauge
of low voltage wire based on the total wire
length so that no more than a 1�2 volt drop
is experienced�
On larger units having a high amount of electric heat, a
second power supply may be required� Run the second
power supply to the connections located with the heater�
Follow all National Electrical Codes and Local Codes as
required� Make sure to run a ground wire to the supplied lug�
Interconnecting Refrigerant Tubing
After the two system sections have been installed, the field
supplied interconnecting tubing can be run�
(a) Units 10-ton and smaller are provided as standard without
the resealable fittings. In this situation the sections may
be provided with stubbed copper tubing� Follow industry
accepted practices for brazing the field supplied tubing to the
unit copper tube stubs�
(b) For units supplied with the resealable refrigerant fittings follow
instructions below�
Units are provided with unique self-sealing fittings (Optional
on 10-ton and smaller, standard on 12-ton and larger) on
the refrigerant lines between the sections. These fittings or
couplings allow the two section unit to be separated and
reconnected without loosing the refrigerant charge�
When installed as a split system, an optional interconnect kit
is required for each refrigerant circuit or hot gas bypass line�
If the unit was defined as a split system when ordered, the
fittings will be male on both sections. The interconnect kit will
then consist of the matching female fittings. An interconnect
kit is required for the installer to connect refrigerant lines
between both sections� Refrigerant piping between the
sections is field supplied.
Systems not ordered from the factory to be installed as a
split system, and that contain resealable fittings, will include
Female Fittings on the evaporator section and Male Fittings
on the condensing section� An optional Interconnect kit(s)
must be ordered indicating that a Male / Female Kit is
required�
The interconnect kit also contains four (4) Schrader fittings.
The installer can place at least one in each refrigerant line or
at one end of the refrigerant line� These enable the refrigerant
line to be evacuated and charged as needed, based on the
size and length�
In some situations, the desired refrigerant line size may
differ from the self-sealing fitting size provided. The line size
should be reduced or enlarged at the self-sealing fittings as
necessary�
INFORMATION
On units with more than one refrigerant
circuit, be careful not to intermix liquid,
suction and/or hot gas lines of the various
circuits�
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