Installation Manual

98 Rinnai I-Series Condensing Boiler Solo Manual
Boost mode allows the boiler to override the target temperature determined by the outdoor reset
control, and will boost the boiler target temperature to the seng of Parameter 01 aer a
connuous run me or an interval as selected in Parameter 02. The boost funcon is acve unl the
call for heat is sased or the boiler cycles o.
For example: In the case of selecng curve 1 on parameter number 01 and 30 minutes on parameter
number 02, outdoor temperature is 51°F, and supply temperature is 140°F. When the boiler
connues operang with ring for 30 minutes, the target supply temperature will rise toward 180°F.
This control connues unl shut down.
80
100
120
140
160
180
200
0 10 20 30 40 50 60 70 80
0°F
(-18°C)
20°F
(-7°C)
40°F
(4°C)
80°F
(27°C)
Outdoor Temperature
Supply Temperature
Example
180°F
(82°C)
140°F
(60°C)
51°F
(11°C)
Curve 1
The maximum outdoor temperature parameter seng (warm weather shutdown) enables the
boiler CH operaon to shut down when the outdoor temperature is higher than 77°F (25°C). This
mode can prevent the boiler from operang under warm condions unexpectedly.
Maximum outdoor temperature is selected by seng parameter number 03 to “77°F (25°C)” or
“No Maximum” (see secon “12.4 Parameter Sengs” for more informaon).
200°F (93°C)
180°F (82°C)
160°F (71°C)
140°F (60°C)
120°F (49°C)
100°F (38°C)