NTI Trinity Ti 100, Installation And Operation Instructions Manual

Page: 11 / 38

11
Normal Range of Combustion Products
(At maximum fan speed, 240 for Ti100-200, and 195 for Ti400)
Natural Propane
Carbon Dioxide CO
2
% 8-9.5* 9-10.5*
Carbon Monoxide CO ppm 25-175* 25-175*
NO
X
ppm 10-50 10-50
*Note: On colder days CO
2
should be closer to the lower number, on
warmer days it should be closer to the higher number. CO should be
highest at the maximum firing rate.
Setting Combustion
Using a calibrated gas analyzer, check the combustion
and compare it with the acceptable requirements. The
test should be performe d at maximum fan speed (“Gas
Input Value”).
Adjusting Combustion - Use the input screw to adjust the
amount of gas available for combustion. Increasing gas
increases CO and CO
2
. Reducing gas decreases CO and
CO
2
.
CO – At maximum fan speed , the CO reading is the most critical to the safe operation of the boiler. The CO should be no higher than
175 PPM at any condition. If the CO is over 140 PPM, the input should be reduced until the CO is less than 140 PPM or the CO
2
is
reduced to 8% (9% for LP Gas). If the CO is over 140 PPM and the CO
2
is less than 8% (9% for LP Gas), contact NTI for assistance.
CO – At minimum fan speed , should be checked, and the CO should be less than the reading recorded at high fan speed. The CO
2
at low
fan speed must be at least as high as the CO
2
recorded at high fan speed, but not more than 9.5% (10.5% for LP Gas).
Ti Input Screw Adjustment
Decrease gas
Turn Clockwise
Increase gas
Turn counterclockwise
Manifold
o ut
Gas IN
Air In
Line Pressure
Input Screw
Ti100-200 Models
Ti400 Model
Input Screw
Manifold Pressure
Ti100-200 Input Screw – Is a
multiple turn needle valve. Fully
open to close is approximately 17
turns. Typical adjustment for Natural
Gas is 0-1 full turns in or out.
Typical adjustment for LP Gas is 0-3
full turns in or out.
Ti400 Input Screw – Is a geared ball
valve with a 4 to 1 ratio. Adjusting input
screw 4 complete turns will returned the
valve to the original location, 2 turns
from fully open will completely close the
valve. Typical adjustment required is 0-
1/4 turns in or out.
Line Pressure