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RT-SVX36G-EN
Unit Start Up
4. Check the carbon dioxide levels after each adjustment.
5. Press the STOP key at the Human Interface Module in the unit control panel to stop the system
operation.
Table 52. Recommended manifold pressures and CO
2
levels during furnace operation (see notes)
Manifold
Furnace Stage
MBH
Firing Rate
%CO
2
Pressure
High-Fire
235
100%
8.5 - 9.5
3.0 - 3.5
Low-Fire
117
50%
6.0 - 7.0
0.9
High-Fire
350
100%
8.5- 9.5
3.0 - 3.5
Low-Fire
175
50%
6.0 - 7.0
0.9
High-Fire
500
100%
8.5 - 9.5
3.0 - 3.5
Low-Fire
250
50%
6.0 - 7.0
1.25
High-Fire
850
100%
8.5 - 9.5
3.0 - 3.5
Low-Fire
500
50%
6.0 - 7.0
1.25
High-Fire
1000
100%
8.5 - 9.5
3.0 - 3.5
Low-Fire
500
50%
6.0 - 7.0
1.25
Note:
1.
Manifold pressures are given in inches w.c.
2.
High fire manifold pressure is adjustable on all heaters.
3.
Low fire manifold pressure is non-adjustable on 235 MBH and 350 MBH heaters.
Figure 83. Flue gas carbon dioxide and oxygen measurements
