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GI202
Preventive Maintenance
Air Filter Maintenance –
The Dust Free air filter in your TTHERM GEO is designed for optimum performance
and long life. However, a dirty filter will result in lower efficiency and performance. Periodically, the filter
should be thoroughly pressure washed in the opposite direction of airflow. Under normal operating conditions,
a monthly cleaning should be satisfactory.
Water Coil Maintenance –
In closed loop systems, water coil maintenance is generally not needed. However,
if a dirty installation or deterioration of the piping has caused debris to accumulate in the system, the water coil
should be cleaned using standard cleaning procedures. For open loop systems installed in areas with a high
mineral content, it is best to schedule regular periodic maintenance to inspect and clean the coil if necessary.
Should cleaning become necessary, do so using the following standard cleaning procedure:
Chlorine Cleaning (Bacterial Growth)
1.
Turn thermostat to “Off” position.
2.
Connect a circulating pump to hose bibs on entering water and leaving waterside of heat exchanger.
3.
Using a five-gallon pail of water add chlorine bleach mixture. The chlorine should be strong enough to
kill the bacteria. Suggested initial mixture is 1 part chlorine bleach to 4 parts water.
4.
Close shut off valves upstream and downstream of heat exchanger.
5.
Open hose bibs to allow circulation of bleach solution.
6.
Start pump and circulate solution through heat exchanger for 15 minutes to one hour. Solution should
change color to indicate the chlorine is killing the bacteria and removing it from the heat exchanger.
7.
Flush used solution down the drain by adding fresh water supply. Flush until leaving water is clear.
8.
Repeat procedure until solution runs clear through the chlorine circulation process.
9.
Flush entire heat pump system with water. This procedure can be repeated annually, semiannually, or
as often as it takes to keep bacteria out of the heat exchanger, or when bacteria appears in a visual flow
meter to the point the flow cannot be read.
Muriatic
Acid Cleaning - (Difficult Scaling and Particle Buildup Problems)
Consult installer due to dangerous nature of acids.
“Iron out” solutions and de-scaling products are also useful.
Condensate Drip Pan and Drain –
Inspection and cleaning of the condensate drain system during the cooling
season will help prevent the system from plugging up, potentially causing water damage to your structure and
floor coverings. Inspect the flexible “P-trap” to make certain it remains clear of obstructions. In some areas,
airborne bacteria can cause algae to grow in the drip pan. In these areas, it may be necessary to treat the drain
pan with an algae inhibiting chemical, as this algae together with lint and dust could plug the drain piping.
Blower Motors –
All TTHERM GEO’s are equipped with factory sealed bearing blower motors. These motors
never need additional lubrication for the life of the motor. Oiling is not recommended, as excess oil will attract
lint and dust.
Air Coil –
In order to keep your TTHERM GEO operation at peak efficiency, the air coil should be inspected
and cleaned when necessary. If the coil is excessively dirty, the coil can be cleaned with a household vacuum
cleaner and a soft brush. The aluminum fins are fragile and bend easily, so take great care not to damage the
fins, and remember, these fins are sharp, so take the needed safety precautions.
Summary of Contents for TVA series
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