32
CAUJ-SVX01E-EN
indicates that shims are required to level the unit.
See Leveling the Unit section earlier in this chapter.
5. Make minor clearance adjustments by turning the
isolator leveling bolt clockwise to increase the
clearance and counterclockwise to decrease the
clearance. If proper isolator clearance cannot be
obtained by turning the leveling bolt, level the
isolators themselves. A 1/4 inch variance in
elevation is acceptable.
6. Secure the isolator to the mounting surface using
the base holes in the isolator.
7.
After unit is level, tighten isolator base mounting
bolts to secure them to the mounting surface.
Installation
General Unit Requirements
The checklist listed below is a summary of the steps
required to successfully install a commercial air cooled
condenser. This checklist is intended to acquaint the
installing personnel with what is required in the
installation process. It does not replace the detailed
instruction called out in the applicable sections of this
manual.
•
Verify that the power supply complies with the unit
nameplate specifications.
•
Check the unit for shipping damage and material
shortage. If damage or shortage is found, file a
freight claim and notify Trane office.
•
Verify installation location of the unit will provide
the required clearance for proper operation.
•
Install appropriate isolators, if required.
Refrigerant Piping Requirements
N
No
otte
e:: See Refrigerant Piping Component and
Refrigerant Piping sections and for
recommended line components and guidelines.
•
Install properly sized liquid line(s) between the
liquid line connections on the unit and the
evaporator.
•
Install refrigerant rated shutoff valves in the liquid
line(s) to isolate the filter drier(s) for service.
•
Install a properly sized filter drier in each liquid line.
•
Install properly sized discharge (hot gas) line(s)
between the discharge line connections on the unit
and the compressor unit.
•
Leak test the system per Leak Testing Procedure
section.
Refrigerant Piping Components
For recommended components, see the latest edition
of the Applications Guide SS-APG012-EN.
Liquid Line Components
Filter driers and valves (expansion valves, charging
valves, etc.) should be provided in the liquid lines just
before the evaporator. Minimize the use of valves,
reducers and tube bends as much as possible to avoid
excessive pressure drop before the expansion valve.
Liquid Line Filter/Filter Drier (Field Supplied)
Install the filter drier in the liquid line as close as
possible to the expansion valve. Locate them upstream
of the moisture indicator and solenoid valve (if
applicable).
Liquid Line Moisture Indicator
To aid in troubleshooting, charging and servicing the
system, install moisture indicators in the liquid lines
near the evaporator, down stream of the liquid line
drier between the solenoid valve (if applicable) and the
expansion valve.
Liquid Line Solenoid Valves
N
NO
OT
TIIC
CE
E
E
Eq
qu
uiip
pm
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en
ntt D
Da
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ma
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e!!
D
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ott u
usse
e sso
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en
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oiid
d v
va
allv
ve
e a
ass a
a p
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um
mp
pd
do
ow
wn
n d
de
ev
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e
a
ass iitt c
co
ou
ulld
d rre
es
su
ulltt iin
n e
eq
qu
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pm
me
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ntt d
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am
ma
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e..
Liquid line solenoid valves are not recommended on
units when they are connected to DX coils. Liquid line
solenoid valves are recommended for refrigerant
migration control when they are connected to an EVP
chiller and should be connected as described in the
Installation Electrical chapter.
Thermostatic Expansion Valve (TXV)
Trane recommends a balance-ported externally
equalized valve in order to maintain satisfactory
superheat control down to lower valve loading
conditions and to compensate for pressure drops
between the expansion valve and superheat control
point (evaporator refrigerant outlet). For fin and tube
evaporator applications, a 30% bleed port TXV is
required for 20 to 60 ton units and a 15% bleed port is
required for 80 to 120 ton units.
In order to get proper refrigerant distribution into the
coil, an expansion valve is required for each coil
distributor. See tables below for valve selection.
IIn
ns
stta
alllla
attiio
on
n M
Me
ecch
ha
an
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all
