Table 4 Ð DIP Switch Con®guration
SETTING | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
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| Time Guard |
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| Expansion | Field | Modulated | Override ON |
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OPEN |
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| IN CONJUNCTION | Gas Heat | Heat Pump | ||||
Ð | Ð | Board | Test | Power | |||||
WITH FIELD TEST Ð | Operation | ||||||||
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| Operation | ON | Exhaust |
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| Set Minimum |
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| Damper Position |
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CLOSED |
| Thermostat | Base Control | Field | CV | Time Guard |
| Air Conditioner | |
CV | Test | Power | Electric Heat | ||||||
Used | Board Only | Override OFF | Operation | ||||||
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| OFF | Exhaust |
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LEGEND
CV Ð Constant Volume
NOTES:
1.The OPEN side of the DIP switch is marked ``OPEN.'' When the rocker switch is on the ``OPEN'' side of the switch, the switch is open.
2.When the unit is being
Table 5 Ð DIP Switch Factory Settings
UNIT | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
580G,H | Closed | Closed | Closed | Closed | Closed | Closed | Open | Closed |
·DIP switch 6 con®gures the Time Guard override and, when used with the ®eld test function, sets the mini- mum damper position
·DIP switch 7 con®gures the unit for gas heat or elec- tric heat
·DIP switch 8 con®gures the unit for heat pump or air conditioner operation
10.Adjust economizer. Check that
IMPORTANT: Unit power must be on for 24 hours prior to
11.The optional
START-UP
I. COOLING SECTION START-UP AND ADJUSTMENTS
CAUTION: Complete the required procedures given in the
Do not jumper any safety devices when operating the unit.
Do not operate the compressor when the outdoor tem- perature is below 40 F (unless accessory low ambient kit is installed).
Do not
A. Checking Cooling Control Operation
Start and check the unit for proper cooling control operation as follows:
Place SYSTEM switch in COOL position and FAN switch in AUTO. position. Set cooling control below room temperature.
Observe that compressor, condenser fan motor, and evapora- tor blower motors start. Observe that cooling cycle shuts down when control setting is satis®ed.
B. Cooling Sequence of Operation
On power up, the control module will activate the initializa- tion software. The initialization software reads DIP switch no. 1 to determine it is in the closed position. Next, DIP switch no. 2 is read to determine it is closed for thermostat opera- tion. The initialization sequence clears all alarms and alerts;
The TSTAT function performs a thermostat based control by monitoring Y1, Y2, W1, W2 and G inputs. These functions control stages: cool1, cool2, heat1, heat2 and the indoor fan, respectively.
The control module will operate economizer and run diagnos- tics to monitor alarms at all times.
If the thermostat energizes the G input, the control module will turn on the indoor fan and open the economizer dampers to minimum position. If thermostats are used to deenergize the G input, the control module will turn off the indoor fan and close the economizer dampers.
When cooling, G must be energized before cooling can oper- ate. The control module determines if outdoor conditions are suitable for economizer cooling. For the economizer to func- tion for outside air cooling: the enthalpy must be below the enthalpy set point; the
When Y1 input is energized, the economizer will be modu- lated to maintain SAT at the set point temperature. The default is 55 F. When SAT is above the set point, the econo- mizer will be 100% open. When SAT is below the set point, the economizer will modulate between minimum and 100% open position. When Y2 is energized, the control module will turn on compressor 1 and continue to modulate the econo- mizer as described above. If the Y2 remains energized and the SAT reading remains above the set point for 15 minutes,
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