Specification Sheet

© 2014 Rinnai America Corporation
RUC80i-SP 6/2014
Type of Appliance
Rinnai model number
Operation / Installation
Minimum/Maximum Gas Rate (Input)
Electrical
Electrical Consumption
Amperage
Ignition System
Hot Water Capacity
Temperature
Temperature (without remote)
Approved Gas Types
Energy Factor (EF)
Service Connections
Isolation & Pressure Relief Valves Included
Water Flow Control
Minimum/Maximum Water Supply Pressure
Condensing, Tankless, Temperature controlled, continuous flow,
gas hot water system, Energy Star Qualified
REU-KBD2530FFUD-US
Forced combustion; indoor only; Certified for installation in
Manufactured (Mobile) Homes
15,200 - 152,000 BTU/h (4.5-44.4kWh)
Appliance: AC 120 Volts - 60 Hz
Temperature Controller: DC 12 Volts
Normal: 42 w Standby: 2 w Anti-frost protection: 146 w
Max with pump: 8A Max without pump: 4A Fuse: 10A
Direct electronic ignition
Minimum flow rate: 0.26 GPM (1 l/min)
Minimum activation flow rate: 0.4 GPM 1.5 l/min)
Maximum flow rate: 8.0 GPM (30.3 l/min)
98° - 120° F (37°- 49°C) (factory default) Maximum temperature is
selectable at 120° F (49°C) or at 140° F (60°C); 98° - 185° F
(37°- 49°C) available with the MCC-91-2 controller for commercial
and hydronic applications
120° F (49°C) (factory default) or 140° F (60°C)
Natural or Propane (ensure unit matches gas type)
Natural Gas: 0.96 Propane: 0.96
Gas supply: 3/4 inch (19mm) MNPT
Cold water inlet: 3/4 inch (19mm) MNPT
Hot water outlet: 3/4 inch (19mm) MNPT
Heavy duty forged brass Webstone Isolator valves EXP E2, certified
to NSF/ANSI 61-8 for potable water
Water flow sensor, electronic water control and by-pass control
15 - 150 PSI (104-1035 KPa) (50 PSI (345 KPa) or above is
recommended for maximum flow)
FLOW TABLE
RUC80i (KBD2530FFUD)
Rinnai is continually updating and improving products; therefore, specifications are subject to change without prior
notice. Local, state, provincial and federal codes must be adhered to prior to installation.
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
0 25 50 75 100 125 150
KA2530
Water Flow gpm (l/min)
delta T - Temperature Rise ºF (ºC)
(37.9)
10.0
(34.1)
(11.4)
(7.6)
(3.8)
(26.5)
(30.3)
(19.0)
(22.7)
(15.1)
0.0
9.0
8.0
2.0
1.0
6.0
7.0
4.0
5.0
3.0
(13.9) (27.8) (41.6)
(55.6) (69.4) (83.3)
25 (13.9) 50 (27.8) 75 (41.6) 100 (55.6) 125 (69.4) 150 (83.3)