Factory-Installed Refrigeration System Components
1. Thermostatic Expansion Valve (TXV)
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Valve on each refrigerant circuit. The valve controls
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through the coil panel access door.
2. Evaporator Coil
3. Low Limit Pressure Switch
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4. Compressors
5. Condensing Coil
6. Condenser Fans
7. High Limit Pressure Switch
The switch opens when refrigerant pressure
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then requires a manual reset.
8. Head Pressure Cycle Switc
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9. Liquid Line Filter Drier
Evaporator Coil
Reheat Coil
Condenser Coil
M
1
2
3
4
10
8
9
7
11
6
5
Circuit A
Check Valve
12
10. Hot Gas Bypass Valve (optional)
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Valve Adjustment -
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entering air to the evaporator coil. The valve should
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valve.
11. Reheat Valve (optional)
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air discharge temperature of the unit during
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12. Liquid Receiver (optional)
13
Packaged Rooftop Ventilator
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