Page 58
LAARS Heating Systems
500
399
GAS TYPE
HIGH FIRE, CO
2
LOW FIRE, CO
2
DIFFRNTL PRESSURE
(
inches wc
)
Natural
8.8 to 9.8%
0.5% lower than
3.6” to 3.9”
Propane
9.8 to 10.2%
high fire setting
Table 17. (Residential, sizes 150 - 285 Mbtu)
CO
2
Range and Differential Pressure
GAS TYPE
HIGH FIRE, CO
2
LOW FIRE, CO
2
MANIFOLD
PRESSURE
Natural
8.8 to 9.0%
0.5% lower than
-.005” to
Propane
9.8 to 10.0%
high fire setting
-.015” wc
150–285
Figure 46.
NeoTherm Gas Valves (ALL)
Outlet Gas
Pressure
(manifold
pressure)
8.10.2 – Adjusting CO
2
See Section 8.10
Table 18. (Commercial, sizes 399 - 850 Mbtu)
CO
2
Range and Manifold Pressure
Summary of Contents for NTH
Page 4: ...LAARS Heating Systems...
Page 13: ...Page 9 NEOTHERM Boilers and Water Heaters 38 1 2 98 8 3 4 22 7 1 2 19 64...
Page 30: ...Page 26 LAARS Heating Systems Figure 21 Hydronic Piping Single Boiler Zoning with Circulators...
Page 86: ...Page 82 LAARS Heating Systems Parts Illustration 1 Jacket Components...
Page 88: ...Page 84 LAARS Heating Systems Parts Illustration 4 Internal Components Sizes 750 850...
Page 90: ...Page 86 LAARS Heating Systems Parts Illustration 6 Gas Train Components Sizes 600 850...
Page 93: ...Page 89 NEOTHERM Boilers and Water Heaters Notes...
Page 94: ...Page 90 LAARS Heating Systems Notes...
Page 95: ...Page 91 NEOTHERM Boilers and Water Heaters Notes...
