Removing The Firepot; Replacing The Firepot; Drawer Assembly; Oil Filter - ICP OLR105A12D Installation Instructions Manual

Removing the firepot

The firepot is seldom replaced, but when it must be replaced
one must simply:
1. Remove the burner;
2. Remove the burner Limit Control;
3. Remove the breech plate;
4. Remove the front panel;
5. Remove the brass nuts on the stainless steel heat
exchanger studs;
6. Pry the bottom half of the heat exchanger apart by using
the designated prying tabs;
7. Remove the bottom half of the heat exchanger through
the front of the furnace;
8. Pull the firepot up and out of the bottom half of the heat
exchanger;
9. Remove the old sealing gasket from the flange of the
upper half of the heat exchanger;
10. Scrape any residual gasket material off the matching
flanges of the heat exchanger.

Replacing the firepot

1. Align the slot at the front part of the firepot with the burner
tube sleeve and gently lower the firepot into the bottom
half of the heat exchanger;
2. Holding the firepot near the perimeter, gently push the
firepot all the way into the bottom half of the heat
exchanger until it is properly seated;
3. Thoroughly wet the gasket with water using a spray pump
bottle, position the tabs over the studs, and push the
gasket upward against the sealing flange of the upper half
of the heat exchanger;
4. Install the brass nuts on the studs by engaging only 2 or 3
threads;
5. Position the bottom half of the heat exchanger under the
upper half and align the bottom half so that the slots in the
bolting tabs engage the stainless steel studs. There is no
further need to hold onto the bottom half as it will now be
suspended on the stud nuts;
6. Push upward on the housing and thread the nuts finger-
tight as far as possible;
7. Intermittently tighten the brass nuts with a wrench in a
sequence that will pull the heat exchanger halves
together evenly. Tighten all nuts to 90 inch-lbs torque
once and then alternately re-tighten all nuts again to 100
inch-lb. THE RE-TIGHTENING
ABSOLUTELY NECESSARY TO ENSURE A TIGHT
JOINT;
8. Re-assemble the front panel, breech plate, Limit Control
and burner in reverse sequence to their removal;
9. Follow the instructions for starting the burner for the first
time to cure the firepot and perform combustion checks.
3.1.3)

Drawer assembly

Remove the drawer assembly. Clean all foreign matter from
the retention head and electrodes. If a Beckett AFG burner
has been installed, the burner will have to be removed to
check the retention head.
3.1.4) Nozzle
Replace the nozzle with the one specified in Tables 4.1 to 4.3.
SEQUENCE IS
3.1.5)

Oil filter

Tank filter
The tank filter should be replaced as required.
Secondary filter
The 10 micron (or less) filter cartridges should be replaced
annually.
3.1.6) Air filters
Air filters are the disposable type. They should be replaced at
least once a year. Dusty conditions, presence of animal hair
etc. may require more frequent filter changes. Dirty filters will
impact furnace efficiency and increase oil consumption.
3.1.7) Motor lubrication
Do NOT lubricate the oil burner motor or the direct drive
blower motor as it is permanently lubricated.
3.1.8) CAS-2B combustion air kit
(chimney venting)
If used, check the CAS-2B combustion air kit for proper
operation. Check to see that the inlet screen is not plugged.
Block the air inlet completely and ensure that a zero smoke
reading results. If a zero smoke reading is not obtained, set up
the burner as indicated in Tables 4.1, 4.2 or 4.3.
Gradually block off the intake. The CO
maximum of 0.5 percentage points at the fully blocked
condition. If not, check that the VRV gate is pivoting freely and
that the pivot rod is in a horizontal position. Also, check that
the counterweight has been properly adjusted in accordance
with CAS-2B installation instructions.
3.1.9) BLOCKED VENT SHUT-OFF DEVICE (BVSO)
CLEANING
For continued safe operation, the Blocked Vent Shut-Off
System (BVSO) is required to be inspected and maintained
annually by a qualified technician.
1. Disconnect the power to the appliance;
2. Remove the two screws holding the BVSO assembly
cover in place;
3. Remove the cover;
4. Remove the two screws holding the control box to the
heat transfer tube assembly. Sliding the control box in the
appropriate direction will unlock it form the heat transfer
tube assembly;
5. Carefully remove any build-up from the thermal switch
surface;
CAUTION
Do not dent or scratch the surface of the thermal switch.
If the thermal switch is damaged, replacement is
required.
Clear and remove any build-up or obstruction inside the
6.
heat transfer tube;
7. Re-mount, lock and fasten the control box with the 2
screws removed in step 4;
8. Re-attach the assembly cover with the screws removed in
step 2;
9. Re-establish power to the appliance.
should increase to a
2
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