![Fig. 40 — Condenser Fan Adjustment, 580F180, 210, 300](/images/new-backgrounds/54218/5421873x1.webp)
NOTE: Dimensions are in inches.
Fig. 40 — Condenser Fan Adjustment, 580F180, 210, 300
NOTE: Dimensions are in inches.
Fig. 41 — Condenser Fan Adjustment, 580F240
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| BOTH CIRCUITS |
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| ALL OUTDOOR FANS MUST BE OPERATING |
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(DEG F) | 140 |
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VALVE | 120 |
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| ADD | CHARGE |
| IF ABOVE CURVE |
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LIQUIDAT | 100 |
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TEMPERATURELIQUID |
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80 |
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| 60 |
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| REDUCE CHARGE IF BELOW CURVE |
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| 40 |
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| 100 | 150 | 200 | 250 |
| 300 |
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| 350 |
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| 400 | |||||||||||||||||||||||
| 50 |
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LIQUID PRESSURE AT LIQUID VALVE (PSIG)
Fig. 42 — Cooling Charging Chart
C. To Use the Cooling Charging Chart
Use the above temperature and pressure readings, and find the intersection point on the cooling charging chart. If inter- section point on chart is above line, add refrigerant. If inter- section point on chart is below line, carefully recover some of the charge. Recheck suction pressure as charge is adjusted.
NOTE:
The TXV (thermostatic expansion valve) is set to maintain between 15 and 20 degrees of superheat at the compressors. The valves are factory set and should not require
D. Perfect Humidity™ System Charging
The system charge for units with the Perfect Humidity option is greater than that of the standard unit alone. The charge for units with this option is indicated on the unit nameplate drawing. To charge systems using the Perfect Humidity dehumidification package, fully evacuate, recover, and
IX. GAS VALVE ADJUSTMENT
A. Natural Gas
The gas valve opens and closes in response to the thermostat or limit control.
When power is supplied to valve terminals D1 and C2, the main valve opens to its preset position.
The regular factory setting is stamped on the valve body (3.3 in. wg).
To adjust regulator:
1.Set thermostat at setting for no call for heat.
2.Turn main gas valve to OFF position.
3.Remove
4.Set main gas valve to ON position.
5.Set thermostat at setting to call for heat.
6.Remove screw cap covering regulator adjustment screw (see Fig. 43).
7.Turn adjustment screw clockwise to increase pres- sure or counterclockwise to decrease pressure.
8.Once desired pressure is established, set thermostat setting for no call for heat, turn off main gas valve, remove
X.MAIN BURNERS
For all applications, main burners are factory set and should require no adjustment.
A.Main Burner Removal
1.Shut off
2.Shut off power to unit.
3.Remove unit control box access panel, burner section access panel, and center post (Fig.
4.Disconnect gas piping from gas valve inlet.
5.Remove wires from gas valve.
6.Remove wires from rollout switch.
7.Remove sensor wire and ignitor cable from IGC board.
8.Remove 2 screws securing manifold bracket to basepan.
9.Remove 2 screws that hold the burner support plate flange to the vestibule plate.
10.Lift burner assembly out of unit.