Oil And Refrigerant Removal - Trane RTHD Installation Instructions Manual

Important: Although it is possible to download all of the
products and all of their versions, this is not
advisable due to the size of the resulting
download.
Note: In general, the latest versions of the various products
will already be embedded and present in recent Tracer
TU releases. This method is only required to obtain
very recent releases for specific product firmware.
4. The product firmware required for the AFDR is RTHD: 3.03
(full software build part number: 6200 0624-3.xx) or later.
Version 3.03 is the first version of the RTHD firmware that
®
supports Modbus client communications between the
UC800 and the TR200 AFD. Check the box for RTHD: 3.03
and click Next.
Figure 24.
5. Accept the default destination folder for proper installation
into Tracer TU, and click Install. The selected code will
now be placed into Tracer TU and can be downloaded into
the UC800 controller of the RTHD AFDR when convenient.

Oil and Refrigerant Removal

WARNING
Refrigerant under High Pressure!
Failure to follow instructions below could result in an
explosion which could result in death or serious injury
or equipment damage.
System contains refrigerant under high pressure.
Recover refrigerant to relieve pressure before opening
the system. See unit nameplate for refrigerant type. Do
not use non-approved refrigerants, refrigerant
substitutes, or refrigerant additives.
RTHD units with an AFD require a lower viscosity oil to operate.
With an AFD installed on an RTHD chiller, a minimum
nominal oil viscosity of 110 cSt must be attained. The
existing oil (OIL00048) must be removed from the RTHD unit
and replaced with the new oil (OIL00315/317) (not included)
before operating with an AFD.
SO-SVN048A-EN
To attain the minimum nominal viscosity, at least
90 percent of the existing oil must be removed from the
chiller; refer to chiller nameplate for original chiller oil
charge. Both the oil filter (FLR01683) and cold filter
(FLR01682) must be replaced and are not included with this
upgrade. It is acceptable to change the oil to the new oil and
still run the RTHD unit without the AFD installed, if it is more
convenient to change to the new oil and operate the RTHD unit
for a period of time before the AFD can be installed.
See Figure 26, p. 30 in the following steps to reference valves
locations by number.
Notes:
• Follow all manufacturer's recommendations for recovery
equipment usage.
• Keep all oil removed to measure the total amount of oil
removed from the unit.
• The replacement oil (OIL00315/317) and oil filters are NOT
supplied with this upgrade and must be purchased
separately.
1. Connect hoses from recovery unit to chiller, configured to
recover liquid refrigerant (Push-Pull/Mechanical Pump).
Use 5/8-inch access value on the evaporator or condenser
(number 25 or number 19).
2. Open valves on chiller and start recovery machine.
Complete the transfer of the liquid from the unit to the
cylinder(s).
3. Once all of the liquid has been recovered, reconfigure the
recovery unit for vapor by moving hose from liquid port to
a vapor port to separate the refrigerant from the Solest 68
(OIL00048).
4. Recover vapor down to 0 psi.
5. Weigh and record the total amount of refrigerant removed
from chiller.
6. Pressurize the evaporator to 2 psi nitrogen at the valve
(number 30).
7. Pressurize the condenser to 2 psi nitrogen at the valve
(number 13).
8. Drain the oil at the oil sump valve (number 7).
9. Energize the oil solenoid valve (number 40).
10. Pull the plugs under the gear housing on the compressor
(three plugs total) and drain the oil.
Pre-Installation
27