Rheem RTX3-04 Series Comfort MR Water Heater Instruction Manual
- May 15, 2024
- Rheem
Table of Contents
Rheem RTX3-04 Series Comfort MR Water Heater
Specifications
Model| Resistances| Voltage| Max kW| kW per Resistance| Amperage| Breakers|
Wire Gauge
---|---|---|---|---|---|---|---
RTX3-04| 1| 120 V| 3.2 kW| 3.2 kW| 27 AMPS| 1×30 AMP| 1×10 AWG
RTX3-08| 1| 240 V| 7 kW| 7 kW| 29 AMPS| 1×40 AMP| 1×8 AWG
RTX3-13| 2| 240 V| 13 kW| 6.5 kW| 54 AMPS| 1×60 AMP| 1×6 AWG
RTX3-18| 2| 240 V| 17 kW| 8.5 kW| 71 AMPS| 2×40 AMP| 1×6 AWG
RTX3-27| 3| 240 V| 27 kW| 9 kW| 112 AMPS| 3×40 AMP| 1×8 AWG
Product Usage Instructions
Installation:
- Ensure there is a clearance of 30.5 cm above and below the water heater and 15.25 cm in front and on the sides.
- Leave at least 30 cm (12 inches) of space above and below the unit for servicing. Set the water temperature knob to your desired temperature.
- Use a flow restrictor for proper operation.
Water Connections:
- To eliminate air from the system: – Model RTX3-18: Connect four gauge 8 AWG STW cables to inputs L1 and L2 for each 40A breaker of the heater, and one gauge 8 AWG STW cable for ground.
- Model RTX3-27: Connect six gauge 8 AWG STW cables to inputs L1 and L2 for each 40A breaker of the heater, and one gauge 8 AWG STW cable for ground.
- All models: – Follow the wiring instructions provided by a qualified professional to avoid risks.
Maintenance:
Regular maintenance and routine preventive maintenance are essential to
ensure proper functionality and safety. Always consult a qualified technician
for maintenance tasks.
Frequently Asked Questions (FAQ)
Issue:
No hot water or insufficient water.
Possible Causes:
- Hot water taps are open or leaking.
- Incorrect wiring.
References
Read User Manual Online (PDF format)
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