Appendix I - Venting Size Data - Riello Array AR 2000 Installation And Operation Manual

APPENDIX

APPENDIX I - VENTING SIZE DATA

While there is a positive flue pressure during operation, the combined pressure drop of vent and combustion air systems must not
exceed the following equivalent length:
MODEL
AR 1000
AR 1500
AR 2000
Fittings as well as pipe lengths must be calculated as part of the equivalent length, according to the following table:
MODEL
AR 1000
AR 1500
MODEL
AR 2000
Data for Venting size
ARRAY AR 1000
CO
2
Exhaust gas mass (weight)
Flue temperature
Max. pressure at boiler exit @ high fire
condition
ARRAY AR 1500
CO
2
Exhaust gas mass (weight)
Flue temperature
Max. pressure at boiler exit @ high fire condition 0.70 in H
ARRAY AR 2000
CO
2
Exhaust gas mass (weight)
Flue temperature
Max. pressure at boiler exit @ high fire condition
Cascade Venting of Multiple Boiler Installations
When multiple boilers of the same model size are installed within a common room it is permissible to cascade the venting connecting all
boilers to a single exhaust system. No more than eight (8) boilers should be cascade vented together.
The boiler/ vent installation must be in compliance with ANSI Z223.1/ NFPA 54 and all local, state, and federal regulations for building code.
Venting system shall be designed to maintain suitable vent pressure at the boiler exhaust collar.
For a list of suitable venting materials consult the installation manual section: "4.15 Venting" page 26
Adapters are available for various brands of venting materials. Consult the factory for a list of available adapters.
Venting components from different manufacturers shall not be mixed.
Adequate combustion air must be supplied to the boiler to ensure safe operation. A properly sized direct connected common combustion
air duct may be used for sealed combustion air to the boiler cascade.
For additional information regarding combustion air supply consult the installation manual section: "4.16 Combustion Air"
Prior to installing a permanent vent system refer to the Installation Manual, ANSI Z223.1/ NFPA 54, and all local, state, and federal regulations
for building code to ensure compliance with the requirements of these articles.
PIPE SIZE - 6"
MAX equiv. mt MAX equiv. ft
30
30
-
45° ELBOW - 6"
MAX equiv. mt MAX equiv. ft
1.5
1.5
45° ELBOW - 8"
MAX equiv. mt MAX equiv. ft
2.1
T supply / return (F°) - 176 / 140
Maximum Input Minimum Input
9%
0.26 lb/s 0.02 lb/s
161.6 °F 143.6 °F
0.81 in H O 202 Pa 0.08 in H
2
T supply / return (F°) - 176 / 140
Maximum Input Minimum Input
9%
0.4 lb/s 0.02 lb/s
161.6 °F 143.6 °F
O 174 Pa 0.08 in H
2
T supply / return (F°) - 176 / 140
Maximum Input Minimum Input
9%
0.52 lb/s 0.02 lb/s
161.6 °F 143.6 °F
0.75 in H O 187 Pa 0.1 in H
2
61 61
PIPE SIZE – 8"
MAX equiv. mt
100 -
100 -
- 30
90° ELBOW - 6"
MAX equiv. mt
5 1.8
5 1.8
90° ELBOW - 8"
MAX equiv. mt
7 2.75
T supply / return (F°) - 104 / 86
Maximum Input
9% 9%
0.26 lb/s
107.6 °F
O 19 Pa 0.90 in H O 224 Pa
2 2
T supply / return (F°) - 104 / 86
Maximum Input
9% 9%
0.4 lb/s
107.6 °F
O 19 Pa 0.79 in H O 197 Pa
2 2
T supply / return (F°) - 104 / 86
Maximum Input
9% 9%
0.52 lb/s
107.6 °F
O 25 Pa 0.84 in H O 209 Pa 0.18 in H
2 2
SHUTDOWN APPENDIX
MAX equiv. ft
-
-
100
MAX equiv. ft
6
6
MAX equiv. ft
9
Minimum Input
9%
0.02 lb/s
89.6 °F
0.16 in H O 40 Pa
2
Minimum Input
9%
0.02 lb/s
89.6 °F
0.16 in H O 40 Pa
2
Minimum Input
9%
0.02 lb/s
89.6 °F
O 45 Pa
2