PEERLESS PUREFIRE PFC-1000, Installation, Operation & Maintenance Manual

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70
MAINTENANCE
C. ANNUALLY (BEFORE THE START OF
HEATING SEASON)
1. Check boiler room floor drains to assure proper
drainage.
2. Check the function of the safety relief valve by
performing the following test:
a. Check the relief valve piping to determine that it
is properly installed:
i. No manual valves are to be between the
relief valve and the boiler.
ii. No manual valves on the outlet side of the
relief valve.
iii. No reduction in pipe size on the outlet side of
the relief valve.
iv. The outlet to the valve should be piped to
within 12 inches of the floor away from
people and pets to prevent personal injury in
the event of valve discharge.
b. Check the boiler operating temperature and
pressure.
c. Lift the try lever on the relief valve to the fully
open position and hold it for at least 5 seconds.
d. Release the try lever and allow the relief valve
to close. If the valve leaks, operate the lever two
or three times to clear the valve seat of foreign
matter. It may take some time to determine if the
valve has closed completely.
e. If the valve continues to leak, it must be replaced
before the boiler is returned to operation.
f. Check that operating pressure and temperature
have returned to their normal condition.
g. Check again to confirm that the valve has closed
completely and is not leaking.
3. Test the low water cutoff (LWCO) as described by
the manufacturer of the device.
4. Test the limit operation as described in Section 9.
5. Remove the left rear jacket panel and open the air
plenum cover by removing (6) sheet metal screws.
Inspect the inside of the plenum for any foreign
debris that may have entered through the air intake
opening. Also, check the screen for blockage.
6. Inspect the burners, by removing (6) hex nuts
on each burner mounting plate and opening the
combustion chambers. Replace the burners if
necessary.
7. With the boiler in operation, check that condensate
is dripping from the condensate tubing. Check for
any blockage or restriction in the condensate drain
lines.
D. CONDENSATE SYSTEM CLEANING
INSTRUCTIONS
1. Removal of Condensate Containers:
a. Close the manual gas shutoff valve at the rear
of the boiler and turn off both burner service
switches.
b. Remove the right rear jacket panel.
c. Remove the wing nuts from both the condensate
collector and condensate neutralizer container.
d. Disconnect both condensate hoses from the top
of the condensate collector.
e. Disconnect the float switch wires from the wiring
harness.
f. Lift the front (condensate collector) container
above the level of the other container to empty
some condensate from the system.
g. Disconnect the condensate drain connection
from the rear of the boiler and remove the
containers from the boiler.
2. Cleaning the Containers:
a. Dump the contents of the containers and flush
them with water.
b. Be sure that there is free movement of liquid
between the containers through the bottom port.
c. Check for leaks at all of the hose clamps.
3. Re-installing the Containers:
a. Place the tanks in position and attach both wing
nuts.
b. Connect the hoses to the top of the condensate
collector.
c. Attach the drain hose to the outlet of the system.
The following annual inspection must be performed
by a qualified service technician.
CAUTION
When servicing or replacing components, be
absolutely sure that the following conditions are met:
• Water, gas and electricity are off.
• The boiler is at room temperature.
• There is no pressure in the boiler.
DANGER
Opening the relief valve will result in the discharge
of hot water and/or steam. Be sure that there is no
one near the outlet of the relief valve piping during
this test. Failure to do so may result in severe
personal injury or death.
WARNING