Final System Setup - Trane RAUJ-C20 Installation, Operation And Maintenance Manual

S S t t a a r r t t - - U U p p
Figure 82. 100 Ton cooling cycle pressure curve
100T Cooling Cycle Pressure Curve
All compressors and condenser fans running
550
500
450
400
350
300
250
95 105
Suction pressure, PSIG
Figure 83. 120 Ton cooling cycle pressure curve
120T Cooling Cycle Pressure Curve
All compressors and condenser fans running
550
500
450
400
350
300
250
95 105 115
Suction pressure, PSIG
Table 38. Recommended operating setpoints, 20 to 120 ton units
Control
Discharge Air Controller
(VAV units only)
Chiller Control
(EVP units only)
Freezestat
Freezestat
Zone Thermostat
(CV units only)
Note: For "No Controls" Units, see System Engineer
116
105°F OD
95°F OD
85°F OD
75°F OD
65°F OD
115 125 135 145
105°F OD
95°F OD
85°F OD
75°F OD
65°F OD
125 135 145
Control Setting
Supply Air Setpoint
Reset Setpoint
Control Band
Leaving Fluid Setpoint
Reset Setpoint
Control Band
Low Limit Solution
Temperature
Zone Setpoint

Final System Setup

H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e ! !
F F a a i i l l u u r r e e t t o o d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g c c o o u u l l d d
r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y . .
D D i i s s c c o o n n n n e e c c t t a a l l l l e e l l e e c c t t r r i i c c p p o o w w e e r r , , i i n n c c l l u u d d i i n n g g r r e e m m o o t t e e
d d i i s s c c o o n n n n e e c c t t s s b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g . . F F o o l l l l o o w w p p r r o o p p e e r r
l l o o c c k k o o u u t t / / t t a a g g o o u u t t p p r r o o c c e e d d u u r r e e s s t t o o e e n n s s u u r r e e t t h h e e p p o o w w e e r r
c c a a n n n n o o t t b b e e i i n n a a d d v v e e r r t t e e n n t t l l y y e e n n e e r r g g i i z z e e d d . . V V e e r r i i f f y y t t h h a a t t n n o o
p p o o w w e e r r i i s s p p r r e e s s e e n n t t w w i i t t h h a a v v o o l l t t m m e e t t e e r r . .
After completing the Pre-start and Start-up procedures
outlined in the previous sections, perform these final
checks before leaving the unit:
• Turn the 115 volt control circuit switch 1S2 "Off"
and program the Night Setback (NSB) panel (if
applicable) for proper unoccupied operation. Refer
to the programming instructions for the specific
panel.
• Verify "System" selection switch and the "Fan
Mode" selection switch at the Remote panel is set
correctly.
• Verify that the "System" control switch for the
supply fan is "On".
• Verify that the "System" control switch for the
supply fan or the chilled water pump is "On."
• Set the correct "Operating Temperature" for the
system at the system controller. Refer to Minimum
Starting Ambient Temperature table for the
recommended control set points for the appropriate
control option.
• Turn the 115 volt control circuit switch 1S2 "On".
The system will start automatically once a request
for cooling has been given.
• Verify that all exterior panels and the control panel
doors are secured in place.
Recommended Setting
Set at design discharge (supply) air temperature; minimum setting = 55° F
Set at maximum amount of allowable reset for supply air setpoint.
Set at 6°F Minimum Setpoint
Set at design leaving chilled water temperature (typically) 44° F
Set at maximum amount of allowable reset for leaving fluid setpoint.
Set at 6° F Minimum Setpoint (minimum control temperature cannot be
lower than freezestat setting)
Set at 5° F Minimum above the Chilled Solution Freeze Temperature
Set at desired space temperature.
W W A A R R N N I I N N G G
SS-SVX11K-EN