General Piping Requirements - RBI LCD Series Installation & Operation Manual

e) After it has been determined that each appliance
remaining connected to the common venting system
properly vents when tested as outlined above, return
doors, windows, exhaust fans, fireplace dampers
and any other gas-burning appliance to their
previous condition of use.
Une fois qu'il a été d éterminé, selon la métode
indiquée ci-dessus, que chaque appareil raccordé
au système d'évacuation est mis à l'air libre de façor
adéquate. Remettre les portes et les fenêtres, les
ventilateurs, les registres de cheminées et les
appareils au gaz à leur position originale.
f) Any improper operation of the common venting
system should be corrected so the installation
conforms with the National Fuel Gas Code, ANSI
Z223.1/NFPA 54. When resizing any portion of the
common venting system, the common venting
system should be resized to approach the minimum
size as determined using the appropriate tables in
Appendix F in the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 and or CSA B149 Installation
Codes.
Tout mauvais fonctionnement du systéme d'évacu-
tion commun devrait étré corrigé de façor que
l'installation soit conforme au National Fue Gas
Code, ANSI Z223.1/NFPA 54 et (ou) aux codes
d'installation CAN/CGA-B149. Si la grosseur d'une
section du système d' évacuation doit étré modifiée,
le système devrait étré modifié pour respecter les
valeurs minimales des tableaux pertinents de
l'appendice F du National Fuel Gas Code, ANSI
Z223.1/ NFPA 54 et (ou) des codes d'installation
CSA-B149.

GENERAL PIPING REQUIREMENTS

CAUTION: Improper piping of this boiler/water heater
will void the manufacturer's warranty and can cause
boiler failure resulting in flooding and extensive
property damage! Excessive water hardness causing
scaling in the copper heat exchanger tubes is NOT
covered under the manufacturer's warranty.
Excessive pitting and erosion of the internal surface
of the copper heat exchanger tubes is NOT covered
under the manufacturer's warranty if the result of
high water flow rates, see Table 6. Return water
temperatures below 125°F, 52°C will result in heat
exchanger damage from excessive condensation
voiding the manufacturer's warranty, see Primary/
Secondary Piping Figure 11.
NOTE: Shut off valves and unions should be
installed at the inlet and outlet connections of the
boiler/water heater to provide for isolation of the unit
should servicing be necessary.
LCD INSTALLATION AND OPERATION INSTRUCTIONS
Table 6 - Temperature Rise Table
∆T = 15 °F
Model Flow Rate Pres. Drop
Number GPM
225 24.6
300 32.8
400 43.7
600 65.6
750 82.0
900 98.4 *
∆T = 20 °F
Model Flow Rate Pres. Drop
Number GPM
300 24.6
400 32.8
600 49.2
750 61.5
900 73.8
1050 86.1
1200 98.4*
1480 121.4*
∆T = 25 °F
Model Flow Rate Pres. Drop
Number GPM
400 26.2
600 39.4
750 49.2
900 59.0
1050 68.9
1200 78.7
1480 97.1
1650 108.2
∆T = 30 °F
Model Flow Rate Pres. Drop
Number GPM
600 32.8
750 41.0
900 49.2
1050 57.4
1200 65.6
1480 80.9
1650 90.2
1970 107.7
2300 125.7*
∆T = 35 °F
Model Flow Rate Pres. Drop
Number GPM
600 28.1
750 35.1
900 42.2
1050 49.2
1200 56.2
1480 69.3
1650 77.3
1970 92.3
2300 107.8
*Flow exceeds recommended maximum use a greater temperature
rise or consult manufacturer. Cupro-Nickel exchanger should be
considered.
∆ T = 8.3 °C
Flow Rate Pres. Drop
Ft L/s kPa
0.18 1.6 0.5
0.31 2.1 0.9
0.70 2.8 2.1
1.84 4.1 5.4
3.32 5.2 9.8
5.42 6.2 16.0
∆ T = 11.1 °C
Flow Rate Pres. Drop
Ft L/s kPa
0.18 1.6 0.5
0.41 2.1 1.2
1.08 3.1 3.2
1.95 3.9 5.7
3.18 4.7 9.4
5.16 5.4 15.2
8.14 6.2 24.0
7.7 23.4
7.94
∆ T = 13.9 °C
Flow Rate Pres. Drop
Ft L/s kPa
1.7 0.8
0.27
0.71 2.5 2.1
3.1 3.8
1.29
2.10 3.7 6.2
4.3 10.1
3.41
5.38 5.0 15.9
6.1 15.5
5.25
7.02 6.8 20.7
∆ T = 16.7 °C
Flow Rate Pres. Drop
L/s kPa
Ft
0.51 2.1 1.5
2.6 2.7
0.92
1.50 3.1 4.4
3.6 7.2
2.44
3.84 4.1 11.3
3.75 5.1 11.0
5.01 5.7 14.8
8.75 6.8 25.8
12.45 7.9 36.7
∆ T = 19.4 °C
Flow Rate Pres. Drop
Ft L/s kPa
0.38 1.8 1.1
0.69 2.2 2.0
1.13 2.7 3.3
1.83 3.1 5.4
2.89 3.5 8.5
2.89 4.4 8.3
3.79 4.9 11.1
6.58 5.8 19.4
9.36 6.8 27.6
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