Trane Voyager Commercial - Unit Startup and Voltage Checks; Voltage Supply and Imbalance Requirements; Starting the Unit Procedures; Test Modes for Component Verification

RT-SVX34C-EN 67
Startup
Power Exhaust Control (Tracking)
The power exhaust dampers proportionally track or follow the fresh air (economizer) damper
position. The offset between the fresh air and the exhaust damper(s) is adjustable, see figures
beginning with “(Downflow) Tracking Exhaust Damper Adjustment” on page 93. Refer to Power
Exhaust Fan Performance" tables beginning with Table 42, p. 92
Lead/Lag Control
Lead/Lag is a selectable input located on the RTRM. The RTRM is configured from the factory with
the Lead/Lag control disabled. To activate the Lead/Lag function, simply remove the jumper
connection J3-8 at the RTRM Lead/Lag input. When it is activated, each time the designated lead
compressor(s) is shut off due to the load being satisfied, the lead compressor or refrigeration circuit
switches. When the RTRM is powered up, i.e. after a power failure, the control will default to the
number one compressor.
Figure 41. Transducer Voltage Output vs. Pressure Input for Supply, Return and
Building Pressure
Table 24. Capacity Steps with Lead/Lag Enabled
Unit Size Step 1 Step 2 Step 3
TC*330
LEAD 48% 100%
LAG 52% 100%
TC*360
LEAD 50% 100%
LAG 50% 100%
TC*420
LEAD 47% 100%
LAG 53% 100%
TC*480
LEAD 40% 60%
100%
LAG 60% 100%
TC*600
LEAD 32% 68%
100%
LAG 68% 100%
-0.75 to 9.0 Iwc Pressure Transducer Voltage Output vs. Pressure Input
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
-0.
75
-0.
25
0.
2
5
0.
7
5
1.
2
5
1.
7
5
2.
2
5
2.
7
5
3.
2
5
3.
7
5
4.
2
5
4.
7
5
5.
2
5
5.
7
5
6.
2
5
6.
7
5
7.
2
5
7.
7
5
8.
2
5
8.
7
5
Pressure (inches w.c.)
Volts