Check-Run Switch; Figure 28. Check Run Swithch - Fireye BurnerLogiX YB110 Manual

CHECK-RUN SWITCH

FIGURE 28.
CHECK RUN SWITHCH
The Check-Run switch is located on the underside of the YB
Chassis Module (note drawing Fig. 28) and can be used to stop
the control in its firing sequence at any time in the burner
sequence. It is designed to aid in set-up, start-up and check-out of
the burner and its associated interlocks.
These are the modes of operation:
1.
When power is applied to the control terminals (Ll-L2) and
the operating control circuit is closed (L1-3), the purge period begins and the firing rate motor is
sent to the Hi Fire Purge position. If the Check-Run Switch is moved to the Check position
before the open damper 30 second purge period ends, the control displays:
The control holds in this position indefinitely. This allows the operator to make interlock switch and
linkage adjustments. To continue the cycle, move the Check-Run switch to Run to allow the control
to advance the burner cycle.
2.
If the Check-Run switch is moved to the Check position after the open damper purge period, but
before low fire start period ends, the control displays:
The control holds in this position indefinitely. This allows the operator to make interlock switch and
linkage adjustments. To continue the burner cycle, move the Check-Run Switch to Run. This allows
the control to advance.
3.
During the PTFI period, switching to the Check position stops the program in the PTFI period,
allowing pilot and/or scanner alignment adjustments. The control displays:
It holds in this position indefinitely as long as the flame signal strength is above the threshold of 10.
If it drops below 10 for thirty (30) consecutive seconds, lockout occurs and the message on the dis-
play reads Flame Fail PTFI.
4.
During the MTFI period, switching to the Check position stops the Burnerlogix in the MTFI
period. To inspect the position of the main flame at the burner head. Depending on where the
switch is placed in check and depending on the selection of PTFI*MTFI TIMING, terminals 5, 6
and 7 can be energized simultaneously. The control displays:
If the unit is left in Check for longer than 2 minutes, the control automatically advances to
AUTO.
5.
Switching from run to check during the burner on period drives the modulator circuit to low fire
(10-12 Closes). This allows for low fire fuel-air adjustments, holding the burner at low fire.
Consult your boiler/burner instructions for low fire hold firing recommendations. The control
displays:
CHECK 00:24
HIGH FIRE PURGE
CHECK 00:24
LOW FIRE PURGE
CHECK 35
FLAME SIGNAL
CHECK 35
FLAME SIGNAL
CHECK 35
LOW FIRE SIGNAL
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