78
Call 1-
800-347-9575
for Technical Support
5.
Plug the burner in. Unplug the preheater. Turn the preheater ball valve off. Verify
power by testing for 120VAC across the preheater receptacle (see figure).
a.
Verify power across the preheater
receptacle Standby Heater pins.
b. Note: This should only be performed
with the burner fully attached to the
boiler vessel. Next, jump across the TT
and FF terminals on the Primary
Control. Verify power across the
preheater receptacle Run Heater pins.
c.
Remove the jumpers from the TT and
FF terminals, return the plug to the
receptacle and open the ball valve
when finished.
6. If the tests in step 4 and 5 are successful, plug the preheater into the receptacle and
allow the preheater to heat up. After 30 minutes, the standby PTC should have heated
the oil to the point where the preheater thermostat should have closed. Note: If the room
temperature is below 50°F, allow additional time.
a. Using the temperature probe (or
TPI combustion analyzer with a
type K thermocouple attached),
touch the thermocouple probe to
the surface of the top preheater
cap (under the insulation). It
should register above 120°F.
b. Unplug the preheater and check
for continuity across the
thermostat pins of the preheater plug (refer to figure). If the preheater is hot, but
there is no continuity across the thermostat pins, the preheater will need to be
replaced.
7. If the burner does not light off well, there may be a problem with the Nozzle Block
Standby PTC. To check the Nozzle Block Standby PTC: Remove the screws and flip
back the transformer on top of the burner to expose the nozzle block.
a. Using the temperature probe (or TPI combustion analyzer with a type K
thermocouple attached), touch the thermocouple probe to the surface of the
nozzle extrusion, it should register above 120°F
b. Unplug the burner and check the physical connection and pins of the white PTC
electrical plug.
c. Return the transformer to its operational position. Plug the burner in.
8. If the burner starts okay, but then trips after a few minutes, then restarts again
repeatedly, then the run pills may not be providing enough heat or the incoming oil is
cold. If the incoming oil to the preheater is above 50°F and the preheater cannot
maintain temperature, the preheater will need to be cleaned or replaced.
Preheater Receptacle
Keyway
Run
Heaters
Neutral
Run
Heaters
115vac
T-Stat
T-Stat
Standby
Heaters
115vac
Standby
Heaters
Neutral
Wide Key at Top
Standby Heater - Neutral
Standby Heater
– 115V
Preheater Thermostat
Run Heaters
– 115V
Run Heaters - Neutral
Preheater Plug
(Center Pin Not Used on 200B.
Used for Solenoid Valve on
375B and 500B.)
