Outdoor Reset Curves - Rinnai I Series Installation And Operation Manual

The boiler has four outdoor reset heating curves, which are different target temperature lines
dependent on the outdoor temperature. The selected curve should be based off of the type of heat
emitter and the target temperature desired. The heating curves are described below.
Curve Heat Emitter
Number
1 Standard baseboard, high-
(Default) efficiency air handler, cast
iron or panel radiators
2 Staple up radiant
3 High temperature air
handler or undersized
baseboard
4 Custom curve based on
customer input (see graph
on next page)
190°F
(88°C)
180°F
(82°C)
180°F
(82°C)
170°F
(77°C)
160°F
(71°C)
150°F
(66°C)
140°F
(60°C)
140°F
(60°C)
130°F
(54°C)
120°F
(49°C)
110°F
(43°C)
100°F
-20°F -10°F
(38°C)
(-29°C) (-23°C)
Rinnai I-Series Condensing Boiler Combi Manual
Maximum Supply Temperature at
14°F (-10°C) Outdoor Temperature
Setting temperature on the
14°F
(-10°C)
0°F 10°F 20°F
(-18°C) (-12°C) (-7°C)
180°F (82°C)
140°F (60°C)
180°F (82°C)
controller
30°F 40°F
(-1°C) (4°C)
Minimum Supply Temperature
at 68°F (20°C) Outdoor Temperature
122°F (50°C)
104°F (40°C)
140°F (60°C)
Setting temperature on the
controller - 36°F (20°C)
(20°C)
50°F 60°F
(10°C) (16°C)
91
68°F
140°F
(60°C)
122°F
(50°C)
104°F
(40°C)
70°F
(21°C)