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TI-200 tankless water heater woes
We occupied our newly built house three and half years ago. We have an indoor pool. The highly recommended HVAC engineer/contractor recommended a tankless water heater system that heats the pool, heats ( via a coil to an air handler) upstairs bedrooms, and provides hot water to the faucets. He located the unit in the equipment room that houses all the filtration plumbing for the pool. All the copper pipes in this room have corroded due to the chemicals in high concentration in the air in this room. The Trinity TI-200 heater has failed three times in three and half years (two controller- circuit boards; one blower; one draft inducer) incurring repair costs of about $2,000. Here are my questions:
1) Is this failure rate normal or excessive?
2) Is the location of the unit in the pool's equipment room rather than in the boiler room some 30 feet away improper and contributing to the unit's failures?
3) What remedies are avalable ( relocation; replacement with a different product; dehumidification in the current location; other?)
4) Is there a standard in the industry regarding such an installation?