Issue:
RTAC Evaporator Heaters
Resolution:
All RTAC evaporators have 2 heat tapes installed, that are 420W/120V each (X13140853020).
See attached for drawings.
All evaporators also have 2 submersible heaters installed in the waterboxes.
For MAC (RTAC 140-250T), these are 400W/120V each (X13140891050)
For LAC (RTAC 275-500T) these are 600W/120V each (X13140891060).
Total wattage of the 4 heaters is 1640W for MAC.
Total wattage of the 4 heaters is 2040W for LAC.
Notes:
- The evaporator shell is insulated from ambient air and protected from freezing temperatures by a thermostatically controlled heat tape.
- Whenever the ambient temperature drops to approximately 37F, the thermostat energizes the heat tape. The heat tape will protect the evaporator from ambient temperatures down to -20F.
- The installation must provide an independent power source (115V 20Amp.) with a fuse disconnect.
- The heat tape is factory wired to the unit control panel, refer to the unit wiring schematics for specific terminal numbers.
Changes:
Other Question/Problem/Cause Statements:
- What is the total wattage of the evaporator heaters?
- What is the power draw of the evaporator heat tape and immersion heaters/
- What is the power draw of the heaters?
Facts:
- Air-Cooled Chiller (Pueblo) (RTAC)
Original HUB Document: DOC-108786 and DOC-83884
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.