Trane UHMB060ACV3VA Installer's Manual page 47

I
CORRECT METHOD OF CHECKING DIRECT VENT MANIFOLD PRESSURE
Manifold
Pressure
Measurement
Fitting
TABLE 21
FINAL NG MANIFOLD PRESSURE SETTINGS (inches w.c.)
Furnace Input rate
(KBTU/hr)
40%
60 0.7 + 0.2 / - 0.0
80 0.7 + 0.2 / - 0.0
100 0.7 + 0.2 / - 0.0
Downflow 120 0.7 + 0.2 / - 0.0
Upflow 120 0.9 + 0.2 / - 0.0
For upflow 120KBTU/hr model, 1st stage is 45%
Manifold pressures apply for Natural Gas applications ONLY
FINAL LP MANIFOLD PRESSURE SETTINGS (inches w.c.)
Furnace Input rate
(KBTU/hr)
40%
60 2.1 ± 0.5
80 2.1 ± 0.5
100 2.1 ± 0.5
Downflow 120 2.1 ± 0.5
Upflow 120 2.9 ± 0.5
For upflow 120KBTU/hr model, 1st stage is 45%
Manifold pressures apply for Propane applications ONLY
18-CD30D1-9
WITH BURNER BOX REFERENCED
A Field Supplied barb fitting must be used
on the gas valve to attach the hose
65% 100%
Not Adjustable 3.5 ± 0.2
Not Adjustable 3.5 ± 0.2
Not Adjustable 3.5 ± 0.2
Not Adjustable 3.5 ± 0.2
Not Adjustable 3.5 ± 0.2
65% 100%
Not Adjustable 10.0 ± 0.5
Not Adjustable 10.0 ± 0.5
Not Adjustable 10.0 ± 0.5
Not Adjustable 10.0 ± 0.5
Not Adjustable 10.0 ± 0.5
Installer's Guide
Slope
Gauge
Connects to
Burner Box
Pressure Hose
Field Supplied
O
Negative Control
Pressure Post
Gas Valve
On/ Off
Toggle
Switch
Inlet Pressure
Measurement Fitting
▲
WARNING
!
EXPLOSION HAZARD
REPLACE AND/OR TIGHTEN
ALL PLUGS REMOVED OR
LOOSENED WHEN
ADJUSTING GAS PRESSURE.
LEAK CHECK THE FITTINGS
BEFORE PLACING INTO
REGULAR SERVICE. FAILURE
TO FOLLOW THIS WARNING
COULD RESULT IN SERIOUS
PERSONAL INJURY,
PROPERTY DAMAGE, OR
DEATH
Low Heat Manifold
Pressure
(Adjustment under
cover)
Positive Control
Pressure Post
High Heat
Manifold
Pressure
(Adjustment
under cover)
Flow
Manifold
Pressure
Measurement
Fitting
47