Trane RAUC-IOM-15, Инструкция по установке и обслуживанию

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System Start-up (Continued)
Table 5-8 (Continued)
120 Ton Pressure Curve for each Circuit
COOLING CYCLE PRESSURE CURVE
(Based on Indoor Airflow of 400 CFM / Ton)
FULL LOAD
180
200
220
240
260
280
300
320
340
360
380
400
55 60 65 70 75 80 85 90 95 100 105
SUCTION PRESSURE, PSIG
DISCHARG
E PRESSURE, PSIG
105 F OD Ambient
95 F OD Ambient
85 F OD Ambient
75 F OD Ambient
65 F OD Ambient
To Check Operating Pressures
1. Start the unit and allow the pressures to stabilize.
2. Measure the outdoor air dry bulb temperature (F)
entering the condenser coil.
3. Measure the discharge and suction pressure (psig)
next to the compressor.
4. Plot the outdoor dry bulb temperature and the
operating suction pressure (psig) onto the chart.
5. At the point of intersection, read to the left for the
discharge pressure. The measured discharge
pressure should be within ± 7 psig of the graph.
115 F OD Ambient
Final System Setup
After completing the Pre-start and Start-up procedures out-
lined in the previous sections, perform these final checks
before leaving the unit:
[ ] Turn the 115 volt control circuit switch 1S2 “Off”.
[ ] Program the Night Setback (NSB) panel (if applicable) for
proper unoccupied operation. Refer to the programming
instructions for the specific panel.
[ ] Verify that the “System” selection switch and the “Fan
Mode” selection switch at the Remote panel is set cor-
rectly.
[ ] 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 Table 5-9 for the recom-
mended control setpoints for the appropriate control op-
tion.
[ ] Turn the 115 volt control circuit switch 1S2 “On”. The sys-
tem 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.