Marra Forni Rotator 110, Руководство пользователя

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1. Check status of electronic burner control diagnostic
indicator LED.
A. LED On = electronic burner control fault.
B. 1 flash = air flow fault.
C. 2 flashes = flame with no call for heat.
D. 3 flashes = ignition lockout.
2. Confirm that both main manual shut off valve and man-
ual gas knob on combination gas valve are in the ON posi-
tion. Make sure that the thermostat, operating controls and
safety controls are calling for heat. Check associated wir-
ing and connectors before replacing a component. When-
ever the burner fails to light during the 7 second ignition
trial, or if the flame is lost during the burner run cycle and
not re-established within 37 seconds (30 sec. pre-purge),
the electronic burner control will shut OFF the combination
gas valve and lock out the burner. To reset, set the operat-
ing control to OFF or set the thermostat below set point for
at least 30 seconds.
3. Confirm that:
A. Burner is properly grounded (Green wire
to ground).
B. Line voltage is present between wires
L1(Black) and L2(White). If not, check line
power source.
C. Line voltage is present between L1
(Black) and Ground (Green).
D. There is no voltage present between L2
(White) and Ground (Green).
4. Confirm that 24V are present at:
A. Transformer, 24V secondary side (Yellow
wires). If not present, replace transformer.
B. R terminal on burner control and Ground.
C. First Blue wire in electrical box labeled
“T”(thermostat) and Ground, 2nd Blue wire
in electrical box labeled “T” (thermostat) and
Ground. If power is only present at one Blue
wire, check thermostat and wiring.
D. TH terminal on electronic burner control
and Ground. If no power is present at TH
terminal, check thermostat and wiring.
5. Blower motor should now be ON. If ON, proceed to step
7. If not ON:
A. Confirm that line power is present at IND
wires at the electronic burner control.
NOTE: IND wires exit the back side of the electronic burner
control and one IND wire goes to the lin e power outside of
the blower motor (White and Blue wires for 115V, White and
Black for 230V).
B. Confirm that line power neutral (L2,
White) is connected to motor neutral wires
(Orange and Black wires for 115V, Orange
and Blue wires for 230V). If line power is
being delivered to the blower motor and it is
not running, replace the motor.
6. With blower motor running, confirm that 24V power is
present at PSW terminal on the electronic burner control
and Ground. If power is not present, check wires and wire
connections of the internal motor interlock switch (2 red
wires exiting motor). If the blower motor is running and the
internal blower motor interlock switch is open, replace the
blower motor.
7. After 30 second blower motor pre-purge, confirm 24V
power at V1 terminal on electronic burner control and
Ground. If power is not present, replace electronic burner
control. NOTE: After the pre-purge period, the controller
will simultaneously energize the gas valve and send power
to the spark rod, causing an ignition spark at the end of
the rod. CAUTION: Spark generating circuit is HIGH VOLT-
AGE! If an ignition spark is not present at the tip of the rod,
turn the power supply OFF. Inspect ignition wire/connec-
tors, spark rod & positioning, spark rod gap and spark rod
ceramic insulator. Adjust, repair or replace as necessary. If
an ignition spark is still not present, perform a spark test on
the electronic burner control per the manufacturer’s instruc-
tions. If it fails, replace electronic burner control.
8. Once ignition spark is present, main flame should be
present. If not present:
A. Confirm that there is no air in gas line. If
so, purge air from gas line.
B. Confirm that 24V power is being deliv-
ered to the gas valve (V1 and V2 on elec-
tronic burner control).
C. Check for adequate flame current signal
strength with an electrical meter (Refer to the
electronic burner control manufacturers specification sheet
that is supplied with the burner as noted in Section VIII, sub-
section 6).
9. Once main flame is established and flame current signal
strength is good, proceed to “Part 2 Service, Section VIII
Burner set-up/ adjustment” to finalize the burner set-up.
Note: Electrical and Flame Checks Must Be Made In The Order Listed
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