Trane *UH2B060A9V3VA Installer's Manual page 33

5. Adjust 1st stage gas heat by removing the low (LO)
adjustment regulator cover screw.
a. To increase outlet pressure, turn the regulator adjust
screw clockwise.
b. To decrease outlet pressure, turn the regulator adjust
screw counterclockwise.
c. Adjust regulator until pressure shown on manometer
matches the pressure specified in Table 17.
1. The input of no more than nameplate rating and no
less than 93% of the nameplate rating, unless the unit
is derated for high altitude.
d. Replace and tighten the regulator cover screw securely.
6. Adjust 2nd stage gas heat by removing the high (HI)
adjustment regulator cover screw.
a. To increase outlet pressure, turn the regulator adjust
screw clockwise.
b. To decrease outlet pressure, turn the regulator adjust
screw counterclockwise.
c. Adjust regulator until pressure shown on manometer
matches the pressure specified in Table 17.
1. The input of no more than nameplate rating and no
less than 93% of the nameplate rating, unless the unit
is derated for high altitude.
d. Replace and tighten the regulator cover screw securely.
7. Cycle the valve several times to verify regulator setting.
a. Repeat steps 5-7 if needed.
8. Turn off all electrical power to the system.
9. Remove the manometer and flexible tubing and tighten
the pressure tap screw.
10. Using a leak detection solution or soap suds, check for
leaks at the pressure outlet boss and pressure tap test
screw.
11. Turn on system power and check operation of the unit.
2nd Stage (HI) Manifold
Pressure Adjustment
Outlet
Pressure
Boss
Inlet Pressure
Boss
White-Rodgers 36J
Figure 57A.
18-CD26D1-10
1st Stage (LO)
Manifold Pressure
Adjustment
Gas Valve On / Off
Toggle Switch
Installer's Guide
2nd Stage (HI) Manifold
Pressure Adjustment
Gas Valve On / Off
Toggle Switch
White-Rodgers 36G
Figure 57B.
Table 17
FINAL MANIFOLD PRESSURE SETTINGS (inches w.c.)
FUEL 2nd Stage Max.
NATURAL GAS 3.5" W.C.
LP GAS 10.5" W.C.
INSERT THE TOP FLANGE
OF THE FRONT COVER
UNDER THE LIP INSIDE
THE BOX
ROTATE THE FRONT
COVER INWARD MAKING
SURE THAT ALL SIDE
FLANGES ARE OUTSIDE
OF THE BOX.
Figure 58
1st Stage (LO)
Manifold Pressure
Adjustment
1st Stage Max.
1.7" W.C.
6.0" W.C.
ROTATE THE FRONT
COVER AS SHOWN
ALL SIDE FLANGES MUST
BE OUTSIDE OF THE BOX
33