Rinnai Tankless RX supply connection sizes
Rinnai Tankless RX supply connection sizes: reference table for the tankless water heater (SENSEI RX/CX series): a quick-reference table with notes.
Rinnai Tankless RX supply connection sizes table
| Connection | Size |
|---|---|
| Gas | 3/4 in. MNPT |
| Cold inlet | 3/4 in. MNPT |
| Hot outlet | 3/4 in. MNPT |
| Condensate drain | 1/2 in. MNPT |
How to use the Rinnai Tankless RX supply connection sizes table
Find your exact model in the first column and read across the row. Values in the Rinnai Tankless RX supply connection sizes table are a summary for quick reference; the rating plate on the unit and the manufacturer's manual for your model always decide. If your model is not listed, or a value looks different from what you see on the unit, check the manual before changing anything.
Notes
- Vent connection: 2 in. nominal PVC/CPVC/PP or 3 in./5 in. concentric.
- Full specs (input, flow, weight) are only on each model's spec sheet, not in this manual.
- Supplied power cord is 6.5 ft (2.0 m), outdoor rated; 120 VAC 60 Hz grounded.
Applies to: RX199i, RX180i, RX160i, RX130i, RXP199i, RXP160i (indoor)
Rinnai models this applies to
RX130iRX160iRX180iRX199iRXP160iRXP199i
Rinnai Tankless Water Heater error codes →
Source: Rinnai SENSEI RX Residential Installation and Operation Manual (100000839(03)), Table 2 Supply Connections, p.8; power p.45. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.