60
RT-SVX063G-EN
If adjustment is needed, adjust the regulator on the
valve. Refer to
for two stage valve on 250 & 350
MBh two stage, and
for one stage
valve on all other multi-stage and modulating burners,
for the adjustment screw location. Turn the screw
clockwise to increase the gas pressure or
counterclockwise to decrease the gas pressure.
Combustion Air Analysis
1. Using a flue analyzer make note of the oxygen, carbon
dioxide, and the Air Free CO levels. Take several
samples to assure an accurate reading.
Important:
The flue reading should be taken from
center of flue and at least 4 inches down
from the outlet.
2. Compare the measured oxygen level to the combustion
curve in
. The oxygen content of the
flue gas should be 4% to 5%. If the oxygen level is
outside this range, contact the Technical Support for
assistance.
Low-Fire Adjustment (250 and 350 MBH
Two Staged only)
1. Use the TEST initiation procedures outlined in the
previous section to operate the furnace in the low-fire
state (1st Stage).
2. Check the manifold gas pressure of the valve by using
the pressure port on the manifold section downstream
of the valve. The manifold pressure for Low Fire First
Stage should be set to 1.2" w.c. (3.0" w.c. for propane).
If adjustment is needed, adjust the LO regulator on the
two stage valve. Refer to
for the adjustment
screw location. Turn the screw clockwise to increase
the gas pressure or counterclockwise to decrease the
gas pressure.
3. Check the oxygen, carbon dioxide, and the Air Free CO
levels after each adjustment.
4. Tap the STOP button on the User Interface to stop the
system operation.
Figure 34.
Natural gas combustion curve (ratio of oxygen to carbon dioxide in percent)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21
Perc
ent
Carbon Diox
ide
Percent Oxygen
A =
A
Curve
Fuel
1,000 BTU per cu ft.
of Natural Gas
Содержание IntelliPak with Symbio 800
Страница 16: ...16 RT SVX063G EN Figure 1 20 to 30 ton front view inches 40 28 90 63 27 31 FRONT VIEW 20 30T Dimensional Data ...
Страница 18: ...18 RT SVX063G EN Figure 3 40 to 55 ton front view inches 27 31 40 28 90 63 FRONT VIEW 40 55T Dimensional Data ...
Страница 64: ...64 RT SVX063G EN Figure 37 Dry bulb changeover map Startup the Unit ...
Страница 137: ...RT SVX063G EN 137 Notes ...
Страница 138: ...138 RT SVX063G EN Notes ...
Страница 139: ...RT SVX063G EN 139 Notes ...
