INSTALLING, OPERATING AND MAINTAINING THE SYSTEM
ALTERNATOR/REGULATOR
Most trucks have a standard
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output alternator with an external regulator. The regulator acts |
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as a |
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| 6 or less |
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| 185 amps |
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batteries through numerous discharge cycles.These guidelines |
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| 7 to 9 |
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| 270 amps |
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apply when sizing the alternator: |
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| 10 or more |
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| 320 amps |
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INVERTER |
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| TYPICAL CHARGING CURVE FOR |
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The inverter takes the 12 Volt DC output from | 17 |
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| Advanced alternator |
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16 |
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| Standard alternator |
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the batteries and changes it to 115 Volt AC | 15 |
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current, which is fed to the air conditioner and | 14 |
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other |
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evaluated dozens of different inverters, and we | 11 |
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have selected a 2,000 Watt unit with a modified | 10 |
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9 |
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115 Volt | 8 |
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7 |
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charger to permit you to run the air conditioner |
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6 |
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and recharge the batteries from shorepower |
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when available. It is also offered as an inverter- |
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only model without the charger.We developed this inverter in conjunction with a company with wide experience in this technology, and we have confidence in its ability to start and run our air conditioning systems. Remember, whenever the air conditioning system cycles on there is a momentary heavy load that the inverter must accept and hold until the compressor gets past its starting requirement. It’s only a few milliseconds, but it’s very important.
We do not recommend running our air conditioning systems with any inverter not previously tested and approved by Dometic engineering.
SHOREPOWER
Although there are relatively few shorepower hookups available at truck stops, rest stops and terminals, these will become more readily available in the future.
TMC recommends a minimum of one
12 gauge cord | Up to 25 ft. |
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10 gauge cord | Up to 50 ft. |
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INSTALLATION
Dometic will provide detailed installation instructions with your system. You should make sure you understand these instructions and follow them completely.
CONTROLS
The Dometic auxiliary air system comes with a standard digital thermostat/display unit. Operation is intuitive and easy, with up and down arrows to adjust the setpoint and fan speed.
OPTIMIZING PERFORMANCE
To improve the air conditioner’s performance on a hot day, you can reduce the heat load by parking in a shaded area, covering the windows with reflective shades to block out direct sunlight and pulling the curtain between the sleeper and cab. Make sure windows and doors are tightly closed, and turn off any other
OPERATION AND MAINTENANCE
Make sure you inspect the batteries frequently. Check for solid electrical connections. Be sure the cable connec- tions are good with no corrosion showing. Check for chafing and moisture.
You should inspect and clean the air filter regularly to ensure good airflow across the evaporator coils. You will find the filter in the return air path, either directly behind the grill or in front of the evaporator coil.
Make sure you do not block the airflow between the return air grill and evaporator coil with pillows, blankets, papers or other objects.
Check the condensate drain often to make sure water is draining properly. Make sure the drain fittings do not get clogged.
If you have a split system with external condensing unit, make sure you inspect and clean any debris from the con- denser coil to ensure good air flow.
Dometic’s auxiliary air systems, both
Occasionally check for chafe on outside wires and refrigerant lines (split systems).