22
LABEL ALL WIRES
prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation
FAILURE TO MAINTAIN THE BOILER in proper
working condition may lead to fire, explosion,
personal injury or death, and extensive property
damage.
TURN OFF ALL GAS AND ELECTRIC power
supplies to the boiler before servicing. Contact with
or release of dangerous flammable gas, electrical
voltage, moving parts, and very hot water under
pressure may cause serious personal injury,
property damage, or death.
LOCK ELECTRICAL BOXES AND GAS VALVES
CLOSED
to prevent someone from inadvertently
restoring power or gas before the heating system is
safe to operate.
Equipment you will need:
q
Soft bristle brush
q
Bristle flue brush
q
Vacuum with brush attachment
Perform these tasks each year:
1.
Clean low water cutoff probe (if applicable).
2.
Inspect vent for obstruction and signs of
condensation, distortion, overheating or gas
leakage.
3.
Clean vent terminal and air intake screens.
4.
Clean condensate collection and disposal
system.
5.
Inspect boiler flue passages:
(1) Remove vent pipe.
(2) Remove top panel and hood.
(3) Remove canopy.
(4) Examine all flue passageways. Using
bristle flue brush and vacuum,
remove any soot or obstructions.
(5) Use installation procedure to
reassemble and reseal air intake system
and vent pipe.
6
. Remove and clean main burners:
(1)
Remove jacket front panel.
(2) Remove air box door.
(3)
Disconnect pilot tubing at gas valve.
(4)
Disconnect pilot lead wires at gas valve.
(5)
Remove wires from flame roll-out switch.
(6)
Remove burner access panel.
(7)
Mark location of the pilot main burner on
the manifold if the marking on manifold
is missing or obliterated.
(7)
Hold burner at throat. Lift front of burner
to clear orifice (Figure AM-1). The
burner that holds the pilot can only be
removed by first lifting the burner
adjacent to its right.
7.
Perform
Startup Checks and Adjustments
described earlier in this manual.
8.
Check operation of airflow sensing switches.
9.
Check for water leaks on the boiler or water
pooling around boiler.
10.
Manually operate the relief valve. If the
water is grey or black, there is excessive
oxygen in the system. Oxygen is corrosive
to boilers. Eliminate any source of oxygen.
11.
Verify proper operation after servicing.
AM-1
WARNINGS
ANNUAL MAINTENANCE CHECkLIST (continued)
Summary of Contents for ESC
Page 7: ...7 Figure S 1 Minimum Clearances to Combustibles SPECIFICATIONS continued...
Page 20: ...20 Figure 10 d Operating Instructions 10 Perform Startup Checks and Adjustments continued...
Page 37: ...37 Internal Wiring Figure IW 1 Wiring Diagram...
Page 38: ...38 Internal Wiring continued Figure IW 2 Wiring Diagram...
