Start Up; Economizer Start-Up; Compressor Start-Up - Trane Voyager YS 150–300 Installation, Operation And Maintenance Manual

Start Up

Economizer Start-Up

Using the Service Test Guide in
momentarily jump across the Test 1 and Test 2 terminals
on LTB1 one-time to start the Minimum Ventilation Test.
1. Set the minimum position setpoint for the economizer
to the required percentage of minimum ventilation
using the setpoint potentiometer located on the
Economizer Control (ECA).
The economizer will drive to its minimum position
setpoint, exhaust fans (if applicable) may start at
random, and the supply fan will start when the
SERVICE TEST is initiated.
The Exhaust Fan will start anytime the economizer
damper position is equal to or greater than the exhaust
fan setpoint.
2. Verify that the dampers stroked to the minimum
position.
3. Momentarily jump across the Test 1 and Test 2
terminals on LTB one additional time if continuing
from previous component start-up or until the desired
start-up component Test is started.
4. Verify that the dampers stroked to the full open
position.
5. To stop the SERVICE TEST, turn the main power
disconnect switch to the "Off" position or proceed to
the next component start-up procedure. Remove
electro mechanical test mode connections (if
applicable).

Compressor Start-Up

1. Attach a set of service gauges onto the suction and
discharge gauge ports for each circuit. Refer to the
refrigerant circuit illustration in the Service Facts.
Using the Service Test Guide in
continue the Service Test start-up procedure for each
compressor circuit.
Momentarily jump across the Test 1 and Test 2
terminals on LTB1 one additional time if continuing
from previous component start-up or until the desired
startup component Test is started.
Scroll Compressors
a. Once each compressor has started, verify that the
rotation is correct. If wired correctly the suction
pressure should drop and the discharge pressure
should rise. If a scroll compressor is rotating
backwards, it will not pump and a loud rattling
sound can be observed.
b. If the electrical phasing is correct, before
condemning a compressor, interchange any two
leads (at the compressor Terminal block) to check
the internal phasing. Refer to the following
RT-SVX26K-EN
Table 12, p. 36,
Table 12, p. 36,
illustration for the compressor terminal/phase
identification. Do not allow the compressor to
operate backwards for more than 5 seconds.
Operation for a period of time longer than this will
result in compressor damage. Copeland (Alliance)
will experience failure also. If the compressor runs
backward for an extended period, the motor
winding can overheat and cause the motor winding
thermostat to open.
Figure 29. Compressor terminal box
Note: The Copeland, SSA and SPA scroll compressors for
R-410A units use Trane OIL00094. The correct Oil
for Trane CSHD is Trane OIL00079 or OIL00080.
Compressor types are listed in
appropriate oil charge is listed in
Table 13. Compressor types
Tonnage C1
YS*150 SSA067
YH*150 SSA076
YH*150 Reheat SSA067
YS*180/155 CSHD105
YH*180 CSHD089
YH*180 Reheat SSA083
YS*210/175 CSHD120
YH*210 CSHD105
YH*210 Reheat CSHD089
YS*240/200 CSHD142
YH*240 CSHD142
YH*240 Reheat CSHD120
YS*300/250 CSHD120
YH*300 CSHD155
Table 13, p. 37. The
Table 14, p. 38.
C2
SSA054
SXA044
SSA067
SPA050 (SPA054 on 380V/60Hz/3Ph
units only)
SSA057
SSA083
SXA044 (SPA054 on 380V/60Hz/3Ph
units only)
SSA057
SSA083
SSA083
SSA083
CSHD120
CSHD120
SSA083
37