Reznor YDSA Unit Installation Manual - Manual (Page 42)

Form I-Y, P/N 273646R6, Page 42
Step 4 - Low Fire Manifold Pressure Adjustment Heat Section 1
Remove the cap from the low fire adjustment screw on the two stage valve. Adjust the
pressure setting by turning the regulator screw IN (clockwise) to increase pressure.
Turn the regulator screw OUT (counterclockwise) to decrease pressure. Replace the
cap. Cycle the burner by turning the value of the Stg 1 field OFF and ON to actuate
the valve.
Recheck the manifold pressure and repeat Step 4 if required. If the pressure reading
is correct, proceed to Step 5.
Step 5 - High Fire Manifold Pressure Reading Heat Section 2
Set the value for Stg 1, 2, 3, and 4 to OFF. Close the manual valve. Remove the
manometer from Heat Section 1 and connect it to the 1/8” pressure tap on the manifold
in Heat Section 2. Open the manual valve.
Set the value for Stg 1, 2, 3, and 4 to ON.
Using the manometer, measure the pressure on high fire for heat section 2.
Check the
pressure with the chart on page 49. Normally adjustments to the factory settings
should not be necessary.
If no adjustment is required, proceed to Step 7.
If an adjustment is required, proceed to Step 6.
Step 6 - High Fire Manifold Pressure Adjustment Heat Section 2
Remove the cap from the high fire adjustment screw on the two stage valve. Adjust the
pressure setting by turning the regulator screw IN (clockwise) to increase pressure.
Turn the regulator screw OUT (counterclockwise) to decrease pressure. Replace the
cap. Cycle the burner by turning the value of the Stg 4 field OFF and ON to actuate
the valve.
Recheck the manifold pressure and repeat Step 6 if required. If the pressure reading
is correct, proceed to Step 7.
Step 7 - Low Fire Manifold Pressure Reading Heat Section 2
Set the value for Stg 4 to OFF. Heating Stg 1, Stg 2, and Stg 3 will need to remain
commanded ON for the low fire pressure measurement on Heat Section 2. Using the
manometer, measure the pressure on low fire for heat section 2. Check the pressure
with the chart on page 49. Normally adjustments to the factory settings should
not be necessary.
If no adjustment is required, proceed to Step 9.
If an adjustment is required, proceed to Step 8.
Step 8 - Low Fire Manifold Pressure Adjustment Heat Section 2
Remove the cap from the low fire adjustment screw on the two stage valve. Adjust the
pressure setting by turning the regulator screw IN (clockwise) to increase pressure.
Turn the regulator screw OUT (counterclockwise) to decrease pressure. Replace the
cap. Cycle the burner by turning the value of the Stg 2 field OFF and ON to actuate
the valve.
Recheck the manifold pressure and repeat Step 8 if required. If the pressure reading
is correct, proceed to Step 9.
Step 9 - Close the manual valve. Remove the manometer. Check for a leak at pressure
taps using a leak-detecting solution.
If further unit component testing is required, proceed with the instructions in paragraph
10.3 for the remaining test mode menu screens.
If further unit testing is not required, press the enter key in succession until the cursor
is flashing in the uppermost left hand corner of screen E.a.5 and use the up arrow key
to navigate to Test Mode screen E.a.1. Press the enter key to select the Enable: field.
Press the down arrow key to set the value to OFF.
9.2.2 Checking Gas Pressure (cont’d)
9.2 Gas Heat Section (cont’d)
9.0 Optional Equipment including Heat Sections (cont’d)