Rinnai's V75iN tankless water heater delivers up to 7.5 GPM (gallons per minute) of hot water efficiently, making it perfect for houses that have two to three bathrooms. This ultra-compact, easy-to-install unit lets you enjoy all of the benefits that come with Rinnai's tankless water heating. You will experience reliable, clean hot water at a consistent temperature you pre-set, while saving precious floor space and energy in your home.
Features
• ENERGY STAR Qualified
• Certified for installation in mobile homes
• Propane and natural gas models available
• Compatible with a full range of Rinnai digital controllers
• Enhanced scale detection lessens the possibility of serious, long-term damage
• Temperature lock function prevents unauthorized or accidental changes to water temperature
• Complies with South Coast Air Quality Management District 14 ng/J or 20 ppm NOx emission levels
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Value Series Warranty
Warranty (some restrictions apply)
Heat exchanger: 10 years for residential and/or space heating use; 12 years for residential use if installed with an isolation valve kit
All other parts: 5 years
Labor: 1 year residential
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Click here for more information about the warranty.
Temperature rise (or delta T) in ºF at various flow rates
Feature Table
|
Model*
|
Capacity |
Input BTUs
in thousands
|
Hot Water Capacity
in gallons per minute
(GPM)
|
Energy
Factor
|
Energy Use
|
Temperature Settings
|
|
Normal,
Standby,
Anti-Frost
|
Min
|
Max
|
Activation |
Min |
Max |
Indoor
model |
Outdoor
model
|
Residential
|
Commercial**
|
|
Value Series - Value and comfort for small to medium homes |
V53eN
V53eP
|
  |
19
(N)
20.2
(P) |
120 |
0.6 |
0.6 |
5.3 |
0.82
|
55 Watts,
2 Watts,
184 Watts
|
33 Watts,
2 Watts,
74 watts
|
120°F - 140°F |
Residential only |
V65iN
V65iP
V65eN
V65eP
|
|
10.3 |
150 |
0.4 |
0.26 |
6.6 |
0.82 |
76 Watts,
2 Watts,
120 Watts
|
57 Watts,
2 Watts,
104 Watts
|
98°F - 140°F |
98°F - 160°F
(indoor)
98°F - 185°F
(outdoor) |
V75iN
V75iP
V75eN
V75eP
|
|
10.3 |
180 |
0.4 |
0.26 |
7.5 |
0.82 |
76 Watts,
2 Watts,
120 Watts
|
57 Watts,
2 Watts,
104 Watts
|
98°F - 140°F |
98°F - 160°F |
|
Luxury Series - High output for larger homes |
RL75iN
RL75iP
RL75eN
RL75eP
|
|
10.3 |
180 |
0.4 |
0.26 |
7.5 |
0.82 |
76 Watts,
2 Watts,
104 Watts
|
57 Watts,
2 Watts,
104 Watts
|
98°F - 140°F |
98°F - 160°F |
RL94iN
RL94iP
RL94eN
RL94eP
|
|
10.3 |
199 |
0.4 |
0.26 |
9.8 |
0.82 |
97 Watts,
2 Watts,
184 Watts
|
65 Watts,
2 Watts,
104 Watts
|
98°F - 140°F |
98°F - 185°F |
Ultra Series - Ultimate efficiency, largest capacity
|
RU80iN
RU80iP
RU80eN
RU80eP
|
|
15.2 |
152 |
0.4 |
0.26 |
8 |
0.96 |
42 Watts,
2 Watts,
146 Watts
|
41 Watts,
2 Watts,
168 Watts
|
98°F - 140°F |
98°F - 185°F |
RU98iN
RU98iP
RU98eN
RU98eP
|
|
15.2 |
199 |
0.4 |
0.26 |
9.8 |
0.95 |
64 Watts,
2 Watts,
146 Watts
|
63 Watts,
2 Watts,
168 Watts
|
98°F - 140°F |
98°F - 185°F |
* e = Exterior/Outdoor; i = Interior/Indoor; N = Natural Gas; P = Liquid Propane
** Commercial controller must be purchased separately
Technical Specifications:
→Type of Appliance:Temperature controlled, continuous flow, gas hot water system, installation in manufactured (mobile) homes, Forced combustion/Direct vent, Energy Star qualified
→Rinnai Model Number: REU-VC2528FFU-US
→Minimum/Maximum Gas Rate (Input): 10,300 - 180,000 BTU/h
→Electrical: Appliance: AC 120 Volts - 60 Hz, Controller: DC 12 Volts
→Electrical Consumption: Normal: 76 w Standby: 2 w Anti-frost protection: 120 w
→Ignition System: Direct electronic ignition
→Hot Water Capacity: Minimum flow rate: 0.26 GPM, Minimum activation flow rate: 0.4 GPM, Maximum flow rate: 7.5 GPM
→Temperature: 98° - 120° F (factory default) Maximum temperature is selectable at 120° F or at 140° F; 98° - 160° F available with the MCC-91-2 controller for hydronic applications
→Temperature (without remote): 120° F (factory default) or 140° F
→Installation: Indoor only
→Energy Factor: Natural Gas: 0.82 Propane: 0.82
→Service Connections: Gas supply: 3/4 inch MNPT Cold water inlet: 3/4 inch MNPT, Hot water outlet: 3/4 inch MNPT
→Water Flow Control: Water flow sensor, electronic water control device and fixed by-pass
→Minimum/Maximum Water Supply Pressure: 20 - 150 PSI (recommended 30-80 PSI for maximum performance)
→Water Temperature Control: Simulation feed forward and feedback
→Controller: MC-91-2US (included), Deluxe controller: MC-100V-1US (optional), Bathroom controller: BC-100V-1US (optional), MCC-91-2US (optional; for hyrdonic applications)
→Controller Cable: Non-polarized two-core cable, minimum 22 AWG
→Safety Devices: Flame failure - Flame Rod, Boiling protection, Combustion fan rpm check, Over current - glass fuse, Remaining flame (OHS), Thermal fuse, Automatic frost protection.
→Clearances from Combustibles: Top of heater - 6 inches, Front (Panel) - 6 inches, Sides of heater - 2 inches, Back of heater - 0 inches, Ground / bottom - 12 inches, From vent pipe - 0 inches
→Clearances from Non-combustibles: Top of heater - 2 inches, Front of heater - 6 inches, Sides of heater - 1/2 inches, Back of heater - 0 inches, Ground / bottom - 12 inches, From vent pipe - 0 inches
→Min. / Max. Gas Supply Pressure: Natural Gas: min 5” W.C. max 10.5” W.C., Propane Gas: min 8” W.C. max 13.5” W.C.
→Manifold Gas Pressure (inches W.C.): Natural Gas: high fire 2.5” W.C. low fire 0.61” W.C., Propane Gas: high fire 3.9” W.C. low fire 0.87” W.C
→Front cover material: Powder coated galvanized steel
Dimensions
Measurement in inches (millimeters)
How to Vent this Tankless Hot Water Heater
Here is what you need to vent this tankless heater to the roof.
You only need to buy one of the appropriate length items from among the selection in Group A and Group B below. Consider any optional roofing accessories from Group C below.
Group A
Are you in a cold climate with possibly significant snow accumulation? If so, buy our Rinnai/Ubbink Roof Discharge Termination 38" (Cold Climate), pn 184119. If not, buy our Rinnai/Ubbink Roof Discharge Termination 18", pn 184118-S.
Group B
Choose the additional pipe length you need from the top of the Rinnai heater to the pipe in Group A.
• Rinnai/Ubbink 2" to 12" Telescoping Vent Pipe Extension, pn 224054
• Rinnai/Ubbink 10" Vent Pipe Extension, pn 224051
• Rinnai/Ubbink 19.5" Vent Pipe Extension, pn 224052
• Rinnai/Ubbink 39" Vent Pipe Extension, pn 224053
Group C
• Rinnai/Ubbink Roof Flashing, Roof Pitch 1/12 to 6/12, pn 189950
• Rinnai/Ubbink Roof Flashing, Roof Pitch 6/12 to 12/12, pn 189951
• Rinnai/Ubbink Roof Flashing, Roof Pitch 8/12 to 16/12, pn 189952
• Rinnai/Ubbink Flat Roof Flashing, pn 146141
• Rinnai/Ubbink Metal Roof Flashing, pn 242141
Here is what you need to vent this tankless heater sideways to the wall.
You only need to buy one of the appropriate length items from among the selection in Group A and Group B below. Consider any optional accessories from Group C below.
Group A
Are you in a cold climate and expect a lot of condensate flowing through this termination pipe? If so, buy one of these two lengths:
• Rinnai/Ubbink 12" All Weather Wall Termination Kit, pn STDKITVA-A
• Rinnai/Ubbink 21" All Weather Wall Termination Kit, pn STDKITVA-A21
If not, buy one of these two lengths:
• Rinnai/Ubbink 11.5" Universal Non-Condensing Wall Termination Kit, pn 223181
• Rinnai/Ubbink 21" Universal Non-Condensing Wall Termination Kit, pn 223182
Group B
Choose the additional pipe length you need to extend the distance, between the elbow part and the termination part in the kit above, to the wall.
• Rinnai/Ubbink 2" to 12" Telescoping Vent Pipe Extension, pn 224054
• Rinnai/Ubbink 10" Vent Pipe Extension, pn 224051
• Rinnai/Ubbink 19.5" Vent Pipe Extension, pn 224052
• Rinnai/Ubbink 39" Vent Pipe Extension, pn 224053
Group C
• Rinnai/Ubbink Wall Thimble, fits 2x4 or 2x6 wall construction, pn 224045
• Rinnai/Ubbink Metal Pass Through Plate, pn 224097
Installation Help and Recommendations
We recommend that you have a professional tankless water heater installer review the above recommendations. Need an installer? Get 4 FREE Tankless Water Heater Installation Estimates Now. It's Quick and Easy!
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Contractors: Apply for Wholesale Pricing from GadgetsGo.com.
Documents
• Installation and Operation Manual
• Energy Guide: V75i_VC2528FFU-US
• Detailed Specifications
• Hot Water Design Manual
Frequently Asked Question
Q1: Can this heater be used with 1/2" pipe?
A1: The normal connection for both gas and water supply is 3/4" MNPT. For gas, you can use other pipe sizes as long as you maintain between 8 and 13.5" of water column. For water, you can use other pipe sizes; but since that will affect your flow rate, your output water temperature will be different from the calculations shown with 3/4" MNPT.
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