AERCO KC1000 Heater w/Mod-Box Controller - Manual (Page 39)

MAINTENANCE
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Figure 6.11
Grounding Terminal Location
9. Loosen the hose clamp at the air/fuel valve
outlet and slide the clamp back towards the
burner, (see Fig. 6.12).
10. Using a 1/2” socket wrench remove six 5/16-
18 hex nuts supporting the burner, (see Fig.
6.12).
Figure 6.12
Burner Disassembly Diagram
11. Lower the burner while sliding the air hose
off the air/fuel valve. Remove the burner
through the rear of the unit.
12. Disconnect the exhaust temperature sensor
by unscrewing it from the exhaust manifold,
(See Fig. 6.13).
Figure 6.13
Exhaust Sensor Connector Location
13. Disconnect the air/fuel valve wire harness,
the 12 pin connector, from the control panel.
14. Disconnect wires #24 and #17 from the
blower proof switch (See Fig. 6.14).
Figure 6.14
Blower Proof Switch Wire Locations
15. Loosen the hose clamp on the air/fuel valve
inlet and slide the clamp back towards the
blower, (See Fig. 6.15).