34
FILTERS
Inspect and clean all oil filters. Change paper
elements for new.
BURNER
Turn off the oil cock and disconnect the flexible
oil hose from the oil cock.
Remove burner and clean thoroughly, the burner
draught tube, the electrodes and generally the
head assembly. CHANGE the nozzle for one with
the specified make, oil rate, spray pattern and
angle.
Inspect the ignition electrodes for crazing in the
porcelain. Replace if there are signs of deterio-
ration.
A dirty fan impeller can impair the performance
of burner, inspect and clean if necessary.
Inspect photocell, if badly discoloured, change
it.
Inspect the flexible oil hose for leaks or discolora-
tion. Use only replacement flexible oil hoses that
are detailed in the spare parts section of this
manual.
HEATER
All models are serviced from the front.
Remove flueway inspection cover/s, and baffles,
and clean all heat transfer surfaces and baffles.
Replace any damaged or unserviceable parts with
manufacturers proprietary parts.
Inspect flue and air ducts for deterioration of seals,
and repair if necessary.
Refit parts and inspect seals etc. which should
be replaced if required.
COMBUSTION TESTS
Fit combined air bleed manifold and 0-300 psi (0-
20 bar) pressure gauge to the appropriate oil
pump connection, and replace burner.
Switch on the electric supply to the Heater.
When the burner motor starts, on one pipe sys-
tems, it may be necessary to temporarily open
the air bleed screw on the test manifold.
Once the burner is firing check and if necessary
adjust the oil pressure.
Carry out combustion checks by inserting probes
into sampling points provided or at the flue outlet.
See illustrations of balanced flue kits. On CF
Heaters drill a small hole in the flue pipe, but af-
ter measurement, plug the hole.
Check the Smoke No., if clean wait 10 minutes
and measure C0
2
.
Adjust the air shutter if necessary, open to re-
duce C0
2
, close to increase C0
2
.
If the air shutter is adjusted, re-check the Smoke
No.
Check the flue gas temperature.
The figures should agree with data in Heater Com-
missioning Data,
Section 3:6.
FINAL CHECKS
Check lockout function, either remove photocell
and cover it, or remove solenoid coil, to simulate
flame failure. Re-instate components and press
lockout reset button.
Check that the control thermostat is operating
when the set temperature is reached.
Complete a maintenance report and give the cus-
tomer a copy, retaining a copy for your records.
9-04-02
Summary of Contents for COH110
Page 60: ...14 Fig 4 9b Reillo bypass adjustment 9 04 02 Fig 4 9a Reillo bypass adjustment ...
Page 63: ...17 9 04 02 ...
Page 82: ...36 9 04 02 ...
Page 83: ...37 Model 220 only Fig 8 3c Model 280 only Fig 8 3d Top Top Top 9 04 02 ...
Page 86: ...40 9 3 BURNER PARTS 9 04 02 Model 110 443T58 ...
Page 87: ...41 29 01 08 Model 180 459T55 3007708 ...
