Install Instructions

Page 47
NEOTHERM Residential Boilers
HIGH EFFICIENCY RESIDENTIAL BOILERS
®
Table 19. Residential, sizes 80 - 210 Mbtu,
CO
2
Range and Di󰀨erential Pressure
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 re setting
The Gas Valve in the 80 thru 210 is at the front of the unit
and can be reached after the front panel is pulled forward
and then o󰀨.
Always be patient with your combustion analyzer when
making adjustments to the valve at both Hi-Fire and Low-
Fire.
Be sure to put the cap back onto the valve when you are
done making your adjustments at the gas valve.
under
cap
Gas Pressure Tap
Figure 36. - Unit Gas Valve 80 - 210 Mbtu