Install Instructions
50
Figure 27: Silicone Tubing Assembly
Figure 28: Blower Vent Connector Assembly
9. Inspect heating surface in combustion chamber.
Clean with straight handle wire brush.
10. Install Flue Gas Bafes.
11. Replace Canopy Assembly and seal.
12. Connect Silicone Tubing between Pressure Fittings
on Canopy Assembly and Pressure Switch. Route
through bushings in Vestibule Panel . See Figure
27.
13. Install Jacket Top Rear Panel.
14. Connect vent system. See Figure 28.
15. Connect Blower Motor Wiring Harness
E. Main Burners and Firebox.
1. Vacuum rebox. Exercise care - do not damage base
insulation.
2. Clean main burners. Brush top of burners with soft
bristle brush. See Figure 29. Vacuum to remove any
dirt and lint.
3. Vacuum tip of pilot burner.
4. Check gas orices for lint and dirt. Clean as
necessary.
5. Install main burners by reversing procedure to
remove burners.
a. Pilot burner must be installed in original
location. See Table 16.
b. Main burners must be properly secured in burner
tray slot at rear of rebox and over gas orice.
See Figure 29.
c. Pilot gas supply and pilot lead wires must be
reconnected.
d. Burner access panel must be securely in place.
e. Reconnect Flame Roll-out wires.
F. Check operation. Follow steps F through N from
Section VIII: System Start-up.
G. Procedure for measuring differential pressure (See
Figure 30).
1. With boiler off, remove Gray and Black Hoses at
differential pressure switch.
2. With tees and ¼ inch aluminum stubs, connect water
manometer as shown with additional tubing.
3. Start boiler and read Pressure on Manometer
when boiler water temperature reaches operating
temperature. Refer to Table 17 for minimum
readings.
NOTE: If switch drops-out before boiler reaches
temperature or if pressure differential readings are
below minimums shown in Table 17, check for
cracks in hose or contact your nearest New Yorker
representative.
4. Stop boiler, remove manometer and reconnect hoses
to differential pressure switch. See Figures 27 and
30.
XI. SERVICE (continued)