Table 1
Models
Minimum Gas
Consumption
Maximum Gas
Consumption
Gas Supply
Natural Gas:
Pressure
•
Minimum: 3.5 in. W.C. (0.87 kPa)
•
Maximum: 10.5 in. W.C. (2.61 kPa)
Propane Gas:
•
Minimum: 8.0 in. W.C. (1.99 kPa)
•
Maximum: 13.5 in. W.C. (3.36 kPa)
Input Rate
The input rate can be verified by following the procedure in the National Fuel Gas Code (NFPA54/
ANSI Z223.1, 2006 or latest edition).
Table 2
Models
Gas Type
RCB301AN
NG
RCB301AN
PROPANE
RCB399AN
NG
RCB399AN
PROPANE
Figure 1
4
RCB301AN
30,100 BTU/HR
301,000 BTU/HR
Kit Number
803000053
803000048
803000054
803000049
Venturi
Information
Venturi Diameter
34 MM
5.6 MM / 5.6 MM
30 MM
4.0 MM / 4.0 MM
38 MM
6.4 MM / 6.4 MM
34 MM
5.0 MM / 5.0 MM
Rinnai Commercial Boiler Conversion Manual
RCB399AN
39,900
BTU/HR
399,000
BTU/HR
Injectors Size
Label Color
White
Black
White
Black