Trane IntelliPak 1 with Symbio 800 Installation, Operation And Maintenance Manual page 122

Unit Start-up
Table 59. Recommended manifold pressures and O2 levels for furnace operation — LP (continued)
Burner size
1000 MBH 2-stg
1000 MBH Mod
Note: If the manifold pressure is not within the range shown on the chart, then the combustion fan speeds (P0, P1, and/or P2) need adjustment. Typically, in
increments of 20-40 RPM
(a) For Horizontal MBH, refer to gas heat rating plate for actual capacity.
Figure 102. Flue gas carbon dioxide and oxygen
measurements
122
Low Fire (1%)
Manifold
O2 (%)
(in. w.c)
5.7 - 5.8 0.3 - 0.31
11.4 - 11.6 0.014
High Fire (100%)
O2 (%)
3.5 - 3.7
3.4 - 3.6
Figure 103. Ratio regulator - two-stage and
modulating
Adjustment screw (under
cap) for manifold pressure
adjustment (during Low Fire
O2 adjustment only)
Figure 104. Manifold pressure tap location - 2-stage
and modulating
Manifold
(in. w.c)
1.19 - 1.23
1.20 - 1.24
Connection for
combustion
blower tubing
Tap location for load line
pressure
Connection for
combustion air
switch tubing
Tap location for manifold pressure
RT-SVX072D-EN