Rinnai RXP199i, RXP160i Condensing Tankless Water Heater

Product Overview

SUPER-HIGH-EFFICIENCY (CONDENSING) TANKLESS WATER HEATER

Installation Type: Internal (Indoor) Residential Applications, External (Outdoor) Residential Applications with Outdoor Vent Cap

Model Numbers: RXP199i (REU-NBP3237FF-US), RXP160i (REU-NBP2530FF-US)

Approved Gas Types: Natural and Propane

Efficiency: UEF: 0.98 (RXP199i), 0.97 (RXP160i)

High Altitude Approved: Up to 10,200 ft (3,109 m)

Water Flow Control: Water Flow Sensor, Electronic Water Control and Bypass Control

Controller: Standard: Integrated Controller; Optional: MC-195T-US, MC-601-BK/W

Certifications: AHRI, ANSI Z21.10.3, CSA 4.3, and ENERGY STAR®

Flexible Venting Options

✔️ Concentric or Schedule 40 PVC/CPVC
✔️ Direct Vent (Concentric and Twin Pipe)
✔️ Non-Direct Vent (Room Air)
✔️ Common Vent (Direct Vent and Room Air)

Maximum Equivalent Vent Lengths:

Twin Pipe (PVC/CPVC and PP):

Vent Sizes: 2 in. (51 mm) | 3 in. (76 mm)
Vent Lengths: 75 ft (23 m) | 150 ft (46 m)

Concentric:

Vent Sizes: 2 in. X 4 in. | 3 in. X 5 in.
Vent Lengths: 75 ft (23 m) | 150 ft (46 m)

Ease of Installation and Serviceability

✔️ Smart-Sense™: Adaptive gas valve technology - No gas conversion kit required.
✔️ Versa-Vent™: Outdoor vent cap adapts to any SENSEITM RX Series model for outdoor installation.
✔️ Smart Connect™: Allows connection of phone or tablet to SENSEITM RX Series via Bluetooth® using Rinnai Central™ app.
✔️ Quick-Flush™: Provides an efficient flushing procedure for periodic preventive maintenance.

Warranty

✔️ Heat Exchanger: 15 years or 12,000 operation hours, whichever occurs first
✔️ All Other Parts and Components: 5 years
✔️ Reasonable Labor: 5 years* (*Requires product to be registered within 90 days of installation or labor warranty defaults to 1 year)

Safety Devices

✔️ Flame Failure - Flame Rod, Boiling Protection, Combustion Fan RPM Check, Over Current - Glass Fuse, Remaining Flame (OHS) and Automatic Frost Protection

Included with Purchase

✔️ Tankless Water Heater
✔️ Wall Mounting Bracket
✔️ Vent Screens (x2)
✔️ Screws (x2)
✔️ Self-Tapping Screws (x4)
✔️ Thermal Bypass Valve

Optional Accessories

Description	Part Number	Description	Part Number	Description	Part Number
Isolation Valves and PRV	MIVK-T-LW	Pipe Cover*	PCD11-SHS	Controllers	MC-601-BK/W, MC-195T-US
Outdoor Vent Cap*	RXOVC	Recess Box for SENSEITM RX Series*	RGBCTWHRX	Condensate Neutralizer	804000074
Dedicated Return with Isolation Valves and PRV*	107000639	Bottom Plate for Pipe Cover*	109001364	Scale Cutter	103000038
Retrofit Door for RX in RGB-CTWH-4*	104000335	Wireless Module*	RWM200	Scale Cutter Refill	103000039
Retrofit Door for RX in RGB-CTWH-3, 2, 1*	104000336	Recirculation Push Button*	RPB200	OPU Switch	REU-OPU3
Gas Conversion Kit (Labels Only)*	104000330	EZConnect Cable*	REU-EZC-3	Leak Detection Kit*	RXLeakKit

*New for SENSEITM RX/CX Series Water Heaters

SENSEITM RXP Technical Specifications

SPECIFICATION	RXP199i	RXP160i
Dimensions - w, h, d	18.5 in. x 25.8 in. x 11.4 in. (470 mm x 654 mm x 290 mm)	18.5 in. x 25.8 in. x 11.4 in. (470 mm x 654 mm x 290 mm)
Minimum Gas Consumption Btu/h	15,000	15,000
Maximum Gas Consumption Btu/h	199,000	160,000
Flow Rate¹ (Min - Max)	0.13 - 11.0 GPM (0.5 - 42 L/min)	0.13 - 9.0 GPM (0.5 - 34 L/min)
Weight	58 lb (26 kg)	57 lb (26 kg)
Sound Level	49 dB	48 dB
Electrical - Normal	98 W	73 W
Electrical - Normal with Pump Operation	170 W	149 W
Electrical - Standby	1.3 W	1.3 W
Electrical - Freeze Protection	174 W	174 W
Max Current	4 Amps	4 Amps
Fuse	10 Amps	10 Amps
Temperature	Minimum: 98° F (37° C) Default (Crossover Mode: 120°F (49°C)) Maximum: 120° F (49° C) Default 140° F (60° C) With Parameter Adjustment	Minimum: 98° F (37° C) Default (Crossover Mode: 120°F (49°C)) Maximum: 120° F (49° C) Default 140° F (60° C) With Parameter Adjustment
By-Pass Flow Control	Electronic	Electronic
Gas Supply Pressure²	Natural: 3.5 in. w.c. - 10.5 in. w.c. Propane: 8.0 in. w.c. - 13.5 in. w.c.	Natural: 3.5 in. w.c. - 10.5 in. w.c. Propane: 8.0 in. w.c. - 13.5 in. w.c.
Ignition System	Direct Electronic Ignition	Direct Electronic Ignition
Electronic Connections	Appliance: AC 120 Volts, 60Hz. Temperature Controller: DC 12 Volts (Digital)	Appliance: AC 120 Volts, 60Hz. Temperature Controller: DC 12 Volts (Digital)
Water Supply Pressure	Minimum: 15 PSI (Recommended 50 PSI for max performance) Maximum: 150 PSI	Minimum: 15 PSI (Recommended 50 PSI for max performance) Maximum: 150 PSI
Service Connections	Gas Supply: 3/4 in. (19 mm) NPT Cold Water Inlet: 3/4 in. (19 mm) NPT Hot Water Outlet: 3/4 in. (19 mm) NPT Condensate Drain: 1/2 in. (13 mm) NPT	Gas Supply: 3/4 in. (19 mm) NPT Cold Water Inlet: 3/4 in. (19 mm) NPT Hot Water Outlet: 3/4 in. (19 mm) NPT Condensate Drain: 1/2 in. (13 mm) NPT
Clearances	Top: 2 in. (51 mm)* Bottom/Ground: 12 in. (305 mm) Front: 0 in. Back: 0 in. Sides: 2 in. (51 mm)* Vent: 0 in.	Top: 2 in. (51 mm)* Bottom/Ground: 12 in. (305 mm) Front: 0 in. Back: 0 in. Sides: 2 in. (51 mm)* Vent: 0 in.

* 0 in. from vent components.
** Clearance for servicing is 24 in. (610 mm) in front of water heater.
*** Add 0.25 in. (6.35 mm) for recess box.

¹ Activation flow rate may vary slightly depending on the temperature setting and the inlet water temperature.
² The maximum gas supply pressure must not exceed the value specified by the manufacturer.
Rinnai products are continually being updated and improved; therefore, specifications are subject to change without prior notice.

SENSEITM RXP Water Flow Curve

A graph illustrating water flow rates (GPM) versus temperature rise (Delta T in °F and °C). The curves show the performance for RXP199i and RXP160i models at various temperature increases. Note: Maximum flow rates can be influenced by set temperature, Delta T, and altitude. These flow curves are applicable for incoming water temperatures of 70° F (21° C) or less. For incoming water temperatures exceeding 70° F (21° C), please contact Rinnai.

SENSEITM RXP Dimensions

Diagrams showing the physical dimensions of the unit.

FRONT VIEW: Width 18.5 in. (470 mm), Height 25.75 in. (654 mm), Depth 11.41 in. (290 mm).

SIDE VIEW: Width 6.08 in. (154 mm).

BOTTOM VIEW: Shows connection ports:

Vent Connection: 2 in. (51 mm) nominal PVC/CPVC/PP or 3 in./5 in. Concentric.
Connection Ports: COLD (A: 0.37 in., B: 3.60 in., C: 5.10 in.), HOT (D: 6.20 in., E: 5.60 in.), GAS (F: 2.83 in.), DRAIN (G: 7.13 in., H: 5.32 in.). Dimensions are in inches (mm).

SENSEITM RXP Pump Performance and Pump + Tankless Performance Curve

A graph displaying Total Head (ft) against Water Flow (GPM), with lines representing different pump settings: MAX, HIGH, MEDIUM, and LOW. This illustrates the pump's performance characteristics.

Recirculation Pump Control

✔️ Smart-Circ.™: Learns user hot water patterns to activate recirculation.
✔️ Manual schedule selection is available with Accessory controllers (MC-195T or Wi-Fi module).

Internal Multi-Speed DC Pump

The integrated pump facilitates recirculation via a dedicated return line or through a crossover with the thermal bypass valve.

Maximum Recirculation Pipe Lengths

✔️ 400 equivalent feet for 3/4 in. pipe diameter
✔️ 100 equivalent feet for 1/2 in. pipe diameter

Note: Equivalent elbow lengths should be considered when calculating pipe length. For dedicated return lines, the total length includes both the hot water supply and the dedicated return lines. For cross-over mode, the total length includes both the hot water supply and the cold water piping length from the tankless water heater to the thermal bypass valve. Cross-over mode requires the use of a thermal bypass valve (included).

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