Rinnai REU-KA2530FFUD-US User Manual
RC80HPi (KA2530FFUD)
Type of Appliance
Rinnai model number
Operation / Installation
Minimum/Maximum Gas Rate (Input)
Electrical
Electrical Consumption
Ignition System
Hot Water Capacity
Temperature
Temperature (without remote)
Approved Gas Types
Thermal Efficiency
Energy Factor (EF)
Condensing, Tankless, Temperature controlled, continuous flow,
gas hot water system, Energy Star Qualified
REU-KA2530FFUD-US
Forced combustion; indoor only
9,500 (Natural Gas), 10,300 (Propane) - 157,000 BTU/h
Appliance: AC 120 Volts - 60 Hz
Temperature Controller: DC 12 Volts
Normal 63 watts
Standby 2 watts
Anti-frost protection 220 watts
Direct electronic ignition
0.4 to 6.0 GPM (50° F rise) 0.4 to 8.0 GPM (35° F rise)
98° - 120° F (factory default) Maximum temperature is selectable at
120° F or at 140° F; 98° - 185° F available with the MCC-91
controller for commercial and hydronic applications
120° F (factory default)
Natural or Propane (ensure unit matches gas type)
Natural Gas: 97% Propane: 97%
Natural Gas: 0.96 Propane: 0.96
Service Connections
Water Flow Control
Minimum/Maximum Water Supply Pressure
FLOW TABLE
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
Water Flow (gpm)
2.0
1.0
0.0
0 25 50 75 100 125 150
Gas supply: 3/4 inch MNPT
Cold water inlet: 3/4 inch MNPT
Hot water outlet: 3/4 inch MNPT
Water flow sensor, electronic water control and by-pass control
15 - 150 PSI (50 PSI or above is recommended for maximum flow)
© 2010 Rinnai Corporation
delta T - Temperature Rise (ºF)
RC80HPi-SP 8/2010
RC80HPi (KA2530FFUD)
Controller
Controller Cable
Safety Devices
Clearances from Combustibles
* 24 inches required for serviceability
Clearances from Non-combustibles
* 24 inches required for serviceability
Min. / Max. Gas Supply Pressure
Manifold Gas Pressure (inches W.C.)
NOx
Warranty
MC-91-1US (included)
Deluxe controller: MC-100V-1US (optional)
Bathroom controller: BC-100V-1US (optional)
MCC-91-1US (for commercial applications)
Non-polarized two-core cable, minimum 22 AWG
• Flame failure - Flame Rod
• Boiling protection
• Combustion fan rpm check
• Over current - glass fuse (3 amp)
• Top of heater - 6 inches
• Front of heater - 6 inches *
• Sides of heater - 2 inches
• Top of heater - 2 inches
• Front of heater - 6 inches *
• Sides of heater - 1/2 inches
• Remaining flame (OHS)
• Thermal fuse
• Automatic frost protection
• Back of heater - 0 inches
• Bottom of heater - 12 inches
• From vent pipe - 0 inches
• Back of heater - 0 inches
• Bottom of heater - 12 inches
• From vent pipe - 0 inches
Natural Gas: min 5” W.C. max 10.5” W.C.
Propane Gas: min 8” W.C. max 13.5” W.C.
Natural Gas: high fire 2.9” W.C. low fire 0.70” W.C.
Propane Gas: high fire 3.7” W.C. low fire 1.06” W.C.
Meets California and Texas NOx Emission Rules
Heat exchanger: 12 years* for residential and 5 years* for commercial and
hydronic applications; (10 years* if used with the Rinnai Hydronic Air
Handler); all other parts 5 years*; labor 1 year; (* 3 years if used as a
circulating water heater within a circulation loop, when the water heater is
in series with a circulation system, all circulating water flows through the
water heater and without an on-demand recirculation system). Refer to
the manual for complete warranty information.
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.
DIMENSIONS
Rinnai Corporation • 103 International Drive • Peachtree City, GA 30269 • Toll-Free: 1-800-621-9419 • Fax: 678-364-8643 • www.rinnai.us
WEIGHT: 63.9 lb (29 kg)
E
L
* This is the minimum
dimension from the wall.
The wall bracket is
adjustable to allow an
additional 1.57 inches (40
mm).
H
F
J
M
DIM DESCRIPTION in (mm)
A Width 18.5 (470)
B Depth 10.5 (266.9) *
C Height - Unit 26.4 (670)
D Height - with brackets 28.5 (723.2)
E Hot Water Outlet - from wall 4.3 (110) *
F Hot Water Outlet - from center 3.9 (100)
G Cold Water Inlet - from wall 2.9 (74.6) *
G
I
H Cold Water Inlet - from center 1.1 (27.7)
I Gas Connection - from wall 3.9 (99) *
J Gas Connection - from center 4.1 (103.2)
From base to gas connection 1.6 (40.2)
From base to cold connection 2.0 (50.2)
K
From base to hot connection 1.6 (41.2)
L Condensate Dain - from wall 5.2 (132.6) *
M
Condensate Drain - from center 7.7 (195)
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