Owner`s manual

Hydro-Hot Hydronic Heating System Shop Manual 07/03

Section 8: Diesel-Burner Service, Maintenance, and Repair Information

Page 62

through the Bearing Kit assembly until the threaded portion appears

on Side-A of the Blower Casing, reference Figure 23. Place the new

thick flat Washer and steel Drive Gear on the threaded end of the

Combustion Air Blower's shaft. Thread the new Retaining Nut on the

Combustion Air Blower's shaft until it is finger tight (DO NOT

TIGHTEN).

11. Place a feeler gauge between the Combustion Air Blower and the

flat surface of the Blower Casing. Slowly tighten (or loosen) the

Retaining Nut, holding the Combustion Air Blower, until a .003 - .005

gap is achieved.

. Spin the Combustion Air Blower to ensure a friction free rotation.

NOTE:

If the Combustion Air Blower is rubbing, loosen the Retaining

Nut slightly and lightly tap on the Combustion Air Blower's shaft (oppo-

site side {i.e. Side-B}), then readjust the gap (repeat Steps 11 and 12).

. Reattach the Blower Housing to the Blower Casing using the four

Blower Housing Screws. Reinstall a Clutch Half on both the Motor's

shaft and the Combustion Air Blower's shaft. Attach the Motor and

flange assembly, with the recessed edge of the Motor Flange in-line

with the wiring access slot of the Blower Casing, to the Blower

Housing with the three Hex Head Screws, reference Figure 14.

Reconnect the Black (+) and Brown (-) wires of the Motor to the C-

Plug Harness' Black (+) and Brown (-) wires, reference Figure 13.

Feed the C-Plug Harness' Yellow and Brown wires back through the

wiring access hole in the Protection Cap, reference Figure 14.

. Reinstall the Protection Cap. Reconnect the Black (+) and Brown (-)

wires of the Ignition Coil to the C-Plug Harness' Yellow (+) and

Brown (-) wires, reference Figure 24. Reinstall the Ignition Coil and

secure to the Protection Cap with the four Ignition Coil Screws,

reference Figure 13. Reconnect the Ignition Cables to the Ignition

Electrodes, reference Figure 16.

. Fit the Nozzle Stand Plate inside the cast-aluminum Blower Casing

and secure in place with the four Nozzle Stand Plate Screws.

Reattach the Fuel Supply and Return Lines to the Diesel-Burner

Head.

. Reconnect the Blue (+) and Brown (-) wires to the Fuel Solenoid's

(+) and (-) Electrical Terminals, reference Figure 18. Also, recon-

nect the Flame Sensor's Green wire to the Green C-Plug Harness

wire and the Blue wire to the C-Plug Harness' Violet wire, reference

Figure 15.

Bearings,

continue