Trane TTP030-048D, TTP018-024C, TTP060E User Manual

TTP-IN-1D

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It's Hard To Stop A Trane?

INSTALLER'S

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Model:

Library Service Literature
Product Section Unitary
Product Split System Cooling

Model TTP
Literature Type Installer's Guide

Sequence 1D
Date June 2000

File No. SV-UN-S/S-TTP-IN-1D 6/00
Supersedes TTP-IN-1C

18-AC34D1-5

TTP018-024C, TTP030-O48D &TTPO60E Condensing Units

IMPORTANT -- This Document is customer property and is to remain with this unit. Please return to service information pack
upon completion of work.

These instructions do not cover all variations in systems
nor provide for every possible contingency to be met in
connection with installation. All phases of this installa-

tion must comply with NATIONAL, STATE AND LOCAL
CODES. Should further information be desired or should

particular problems arise which are not covered sufficiently fbr
the purchaser's purposes, the matter should be referred to your

installing deal or local distributor.

GENERAL

The following instructions cover TTP018-024C, TTP030-048D &
TTP060E Condensing Units.

NOTICE: These outdoor units may be used with indoor
units equipped with Capillary Tube, Thermostatic Ex-

pansion Valve or the Accutron TM Flow Control Check

Valve (F.C.C.V.) assembly for refrigerant flow control.

Check fbr transportation damage after unit is uncrated. Report
promptly, to the carrier, any damage found to the unit.

To determine the electrical power requirements of the unit, refer
to the nameplate of the unit. The electrical power available nmst
agree with that listed on the nameplate.

B. LOCATION & PREPARATION OF THE UNIT

1. The unit should be set on alevel support pad at least as large
as the unit base pan.

2. The support pad must NOT be in direct contact with any
structure. Unit nmst be positioned a minimmn of 12" from any

wall or su rrou nding shrubbery to insure adequ ate airflow. Clear-

ance must be provided in f_ont of control box (access panels) &
any other side requiring service access to meet National Electri-
cal Code. Also, the unit location must be far enough away fi'om
any structure to prevent excess roofrun-offwater from pouring
directly on the unit.

3. The top discharge area must be unrestricted fbr at least five
(5) feet above the unit.

4. When the outdoor unit is mounted on a roof, be sure the roof

will support the unit's weight. Properly selected isolation is

recommended to prevent transmission to the building structure.

(_ TOP DISCHARGE--- UNRESTRICTED

5. The maximum length of refrigerant lines fi'om outdoor to
indoor unit should NOT exceed sixty (60) feet.

6. If outdoor unit is mounted above the air handler, maximum
lift should not exceed sixty (60) fbet (suction line). If air handler

is mounted above condensing unit, maximum lift should not
exceed sixty (60) feet (liquid line).

NOTE: Refer to R@'igerant Piping Software, Pub. No. 22-3312-01.

7. Locate and install indoor coil or air handler in accordance
with instruction included with that unit.

5 FT. ABOVE UNIT

Since The Trane Company has a policy of continuous
product and product data improvement, it reserves the
right to change design and specifications without notice.

© American Standard Inc 2000 Pub. No. 18-AC34D1-5

I STALLER'S GUIDE

@

ACCUTRON TM
COMPONENTS

BRAZE TYPE iNDOOR END

SEALING CAP

_'_ FLOW CONTROL

CHECK VALVE
(F.C.C.V.) ORIFICE

/

BODY

AS SHIPPED -_

LIQUID LINE
FIELD SUPPLIED

C. ACCUTRON TM FLOW CONTROL VALVE
If the indoor unit Syste In Refi'i_ erant F1ow control is an Accu tron-

orifice and check valve assembly, an orifice size change will be
necessary.

The outdoor model determines the required orifice size. Check
the listed orifice size on nameplate of the selected outdoor model.

If the indoor u nit is factory shipped with a dilIbrent orifice size,
the orifice must be changed to obtain system rated performance.

IMPORTANT: The outdoor u nit is shipped with the proper size
orifice and a stick-on orifice size label in an envelope attached

to the outdoor unit. Outdoor unit nameplate will have correct
orifice size specified as BAYFCCV - - - A fbr rated performance.

D. INSTALLING REFRIGERANT LINES
Condensing units have provisions for braze connections.

Pressure taps are provided on the service valves of outdoor unit
fbr compressor suction and liquid pressures.

The indoor end of the recommended refrigerant line sets may be
straight or with a 90 degree bend, depending upon situation
requirements. This should be thoroughly checked out before
ordering refl'igerant line sets.

The gas line must always be insulated.
The units are factory charged with the system charge required

when using fif_een (15) feet of connecting line. Unit nameplate
charge is the same.

Final refrigerant charge adjustment is necessary. Use the Charg-
ing (?harts in the outdoor unit Service Facts.

1. Determine the most practical way to run the lines.

2. Consider types of bends to be made and space limitations.

NOTE: Large diameter tubing will be very di[f_cult to rebend once

it has been shaped.

3. Determine the best starting point fbr routing the refl_igerant
tubing- -INSIDE OR OUTSIDE THE STRUCTURE.

c_ IM

4. Provide a pull-thru hole of suflicient size to allow both liquid
and gas lines. The location of this hole (if practical) should be just

above the wall plate which is resting on the foundation.

5. Be sure the tubing is of sufficient length.

6. Uncoil the tubing --- do not kink or dent.

7. Route the tubing maMng all required bends and properly
secure the tubing before making connections.

8. To prevent a noise within the building structure due to
vibration transmission fl_oln the refrigerant lines, the following
precautions should be taken:

a. When the refl'igerant lines have to be fastened to floor

joists or other fl'aming in a structure, use isolation type hangers.

b. Isolation hangers should also be used when refrigerant

lines are run in stud spaces or enclosed ceilings.

c. Where the refrigerant lines ru n through a wall or sill, they

should be insulated and isolated.

d. Isolate the lines fl'om all ductwork.

E. SERVICE VALVE OPERATION
BRASS LIQUID LINE SERVICE VALVE

The Brass Liquid Line Service Valve is factory shipped in the
seated position to hold factory charge. The pressure tap service
port (when depressed) opens only to the field brazing side of the
valve when the valve is in the seated position. The liquid line
valve is not a back seating valve (see WARNING below).

WARNING: Extremecautionshouldbeex-

ercisedso the internal steel stem retaining ring is not

damaged by backing out the valve stem when opening the
valve. If the valve stem is forced out past the retaining
ring, system pressure could force the valve stem out of the
valve body. If the retaining ring is missing, do not attempt
to open the valve. See Figure 3.

BRASS GAS LINE SERVICE VALVE
The Brass Gas Line Service Valve is shipped in the closed

position to hold the factory refl'igerant charge. The pressure tap
service port (when depressed) opens only to the field brazing side

when the valve is in the closed position.

LIQUID LiNE SERVICE VALVE

UNIT SIDE OF

SERVICE VALVE

LIQUID LINE

HEX HEADED

CONNECTION

CAP-----_

RING

PAGE 2 Pub. No. 18-AC34D1-5

©

The Gas Line Service Valve is full open with a 1/4 turn. See
Figure 4.

BRAZING REFRIGERANT LINES

1. Before brazing, remove plugs from external copper stub
tubes. Clean internal and external surfaces of stub tubes prior
to brazing.

2. Cut and fit tubing minimizing the use of sharp 90 ° bends.

3. Insulate the entire gas line and its fittings.

4. Do NOT allow uninsulated liquid line to come in direct
contact with bare gas line.

5. Precautions should be taken to avoid heat damage to
the pressure tap valve core during brazing. It is recom-
mended that the pressure tap port valve core he removed
and a wet rag wrapped around the valve body.

GAS LINE SERVICE VALVE

CAP _ _ 1/4 TURN ONLY

UNIT SIDE
OF VALVE

PRESSURE TAP PORT j

GAS LINE CONNECTION

cAP_

CORE

COUNTERCLOCKWISE

#

/

INSTALLER'S GUIDE

After the brazing operation of refrigerant lines to both the
outdoor and indoor unit is completed, the field brazed connec-
tions must be checked fbr leaks. Pressurize through the service
valve ports, the indoor unit and field refl_igerant lines with dry
nitrogen to 200 psi. Use soap bubbles or other leak-checking
methods to see that all field joints are leak-fl'ee! If not, release
pressure; then repair!

SYSTEM EVACUATION

NOTE: Since the outdoor unit has a refrigerant charge, the gas

and liquid line valves must remain closed.

1. Upon colnpletion ofleak check, evacu ate the refrigerant lines
and indoor coil befbre opening the gas and liquid line valves.

2. Attach appropriate hoses froJn manififld gauge to gas and
liquid line pressure taps.

NOTE: Unnecessary switching of hoses can be avoided and

complete evacuation of'all lines leading to sealed system can be
accomplished with mani[bld center hose and connecting branch

hose to a qylinder of HCFC-22 and vacuum pump.

3. Attach center hose of manifbld gauges to vacuum pump.

4. Evacuate until the micron gauge reads no higher than
350 microns.

5. Close off valve to vacuum pump and observe the micron
gauge. Ifgaugepressurerisesabove 500micronsinone (1) minute,

then evacuation is incomplete or system has a leak.

6. If vacuum gauge does not rise above 500 microns in one (1)
minute, the evacuation should be complete.

7. With vacuum pump and micron gauge blanked off, open valve
on HCFC-22 cylinder and charge rel?igerant lines and indoor
coil with vapor to tank pressure of HCFC-22 supply.

NOTE: DO NOT VENT REFRIGERANT INTO THE
ATMOSPHERE.

8. Close valve on HCFC-22 supply cylinder. Close valves on
manifold gauge set and remove refrigerant charging hoses from
liquid and gas pressure tap ports.

HEAT SHIELD

CAUTION: Use care to make sure that no

moisture enters pressure tap port, while wet rag is being
used.

6. Remove braze shield from clear plastic bag. Soak pad in

water and place over suction and liquid lines to protect unit

finish. See Figure 5. Discard pad when finished with brazing.

7. Use a Dry Nitrogen Purge and Brazing Alloy without flux

when brazing the field line to the copper factory connection. Flow

dry nitrogen into either valve pressure tap port, thru the tubing
and out the other port while brazing.

8. Braze using accepted good brazing techniques.
LEAK CHECK

CAUTION :In scrollcompressorapplications,

dome temperatures may be hot. Do not touch top of com-
pressor, may cause minor to severe burning.

IMPORTANT: Replace pressure tap port valve core be-
fore attaching hoses for evacuation.

Pub. No. 18-AC34D1-5 PAGE 3