Trane IntelliPak 2 - Critical Control Parameters and Dry Bulb Changeover Map

RT-SVX073A-EN
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Table 65. Startup checklist for S*HN, 90–150 units (continued)
Complete
33
Compressor oil levels (½ -¾ high in glass) proper
34
Verify power wires are connected in the high voltage power box
35
Verify field installed control wiring landed on correct terminals
36
All fan belts tensioned and bearings greased
37
Heat wheel rotates freely by hand
38
Reenergize power. Phase sequence (A-B-C) proper for compressor rotation
39
Incoming voltage balanced
40
All panels/doors secured prior to startup
Start unit
41
Service test guide used to operate unit components
42
Fan amperages within nameplate specs
43
Verify system airflow
44
Dampers open and close properly
45
Adjust outside air damper travel
46
Compressor operation normal and within amperage rating
47
Electric, hot water and steam heating operation checked
48
Gas heating startup sequence of operation per IOM has been followed
49
Gas heat operation has been verified with combustion analyzer
50
Incoming gas pressure does not drop below 7" water column when burner is on high fire
51
Operating log completed
Critical Control Parameters and Dry Bulb Changeover Map
Table 66. Critical control parameters
Description
Suggested
Parameter
Economizer Settings
Region 1 Region 2 Region 3 Region 4 Region 5 Region 6 Region 7
Supply Air Temperature Control Setpoint
55°F
Supply Air Temperature Deadband
8°F
Supply Air Pressure Setpoint
1.8" w.c.
Supply Air Pressure Deadband
0.1" w.c.
Building Static Pressure Setpoint
0.03" w.c.
Building Static Pressure Deadband
0.04" w.c.
Standby Freeze Avoidance
20%
Relief Enable Setpoint
10%
Economizer Minimum Position Setpoint
10%
Fixed Dry Bulb Economizer C/O Type a (Moist)*
TOA > 65°
F
TOA > 65°
F
TOA > 65°
F
TOA > 65°
F
TOA > 70°
F
TOA > 70°
F
TOA > 70°
F
Fixed Dry Bulb Economizer C/O Type b (Dry)*
TOA > 75°F
Fixed Dry Bulb Economizer C/O Type c (Marine)*
TOA > 75°
F
TOA > 75°
F
TOA > 75°
F
Fixed Reference (Enthalpy Changeover)
HOA > 28 Btu
Differential Comparative (Enthalpy Changeover)
HOA > HRA
Notes:
1. See map in next figure for dry bulb changeover.
Examples:
- Minneapolis, Minnesota is in “Region 6" and resides in “Moist” subregion, thus designation is 6b. Economizer changeover setting should be 75°F.
- Charleston, South Carolina is in “Region 3" and resides in “Moist” subregion, thus the designation is 3c. Economizer changeover setting should be 65°F.
2. Go to SETUP menu and input setting for parameters listed in the table above.
3. Use the Dry bulb changeover map to determine region of country based on unit site location.
4. Fixed speed compressor units 8°F deadband.
5. eFlex™ compressor units 4°F deadband.
Trane Startup Checklist