Weather-Rite TT Series, Инструкция по установке, эксплуатации и обслуживанию

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TT-S
ERIES
I
NSTALLATION
, O
PERATION AND
S
ERVICE
M
ANUAL
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net w ork.
• All interlocks, control relays and safety limits are
closed. Po w er is s u pplied to terminals #1 and #7
of the flame safeg u ard.
• The Operating Control LED ill u minates.
• The electronic net w ork is no w po w ered u p w hich
ill u minates the Air Flo w LED.
NOTE: The airflo w circ u it of the safeg u ard control is
not u sed and is j u mped. This is w hy the Air Flo w LED
ill u minates w ith the Operating Control LED.
• Follo w ing a time delay period (p u rge cycle) 7
seconds. The electronic net w ork closes a contact
that po w ers u p terminal #3 and terminal #4 in the
safeg u ard control.
• Terminal #3 po w ers u p the eq u ipment's pilot gas
solenoid v al v e w hich opens allo w ing gas to flo w .
• Terminal #4 po w ers u p the ignition mod u le
creating the spark at the bu rner.
• This lasts for 10 seconds. This cycle is called trial
for ignition. D u ring this time period, the PTFI LED
is ill u minated.
• When the flame sensor detects a pilot flame, the
signal is sent b ack to the safeg u ard control. The
electronic net w ork ill u minates the FLAME LED.
• It closes an internal contact, w hich po w ers u p
terminal #5 in the control. This terminal po w ers u p
the main gas v al v es allo w ing the main bu rner to
come on.
• At the same time that the contact in step b closes,
the electronic net w ork opens a contact, w hich
po w ers terminal #4. This sh u ts off the po w er to
the ignition mod u le, w hich stops the spark at the
bu rner. The safeg u ard control at this point
monitors the flame.
NOTE: If a pilot flame is not detected d u ring the 10
second trial for ignition, the pilot gas solenoid v al v e
and the ignition mod u le are t u rned off. A safety
locko u t occ u rs w hich sh u ts do w n the electronic
net w ork. The only LED that w ill b e ill u minated at this
time w ill b e the OPERATING CONTROL. 30 seconds
after the locko u t has acti v ated, the alarm circ u it is
po w ered u p, ill u minating the ALARM LED. Man u al
reset is no w req u ired. Wait 10 seconds b efore
resetting the control to allo w the locko u t s w itch to
cool do w n.
NOTE: If the flame signal is lost w hile the bu rner is
on, the pilot and main gas v al v es w ill b e t u rned off. A
safety locko u t occ u rs w hich sh u ts do w n the
electronic net w ork. The only LED that w ill b e
ill u minated at this time w ill b e the OPERATING
CONTROL. Thirty seconds after the locko u t has
acti v ated, the alarm circ u it is po w ered u p,
ill u minating the ALARM LED. Man u al reset is no w
req u ired. Wait 10 seconds b efore resetting the control
to allo w the locko u t s w itch to cool do w n.
20.4.2 Fireye ® M4RT1 Flame Safe g uard
This control is located in the center of the main
control panel.
To reset this flame relay, power to it
must be shut off and turned back on.
FIGURE 8 2: Fireye M4RT1
This is an exposed circ u it b oard one piece control. It
contains a f u se to protect itself from external shorts
or o v erloads and on its exterior it has fi v e lights w hich
indicate the operating stat u s of the control.
The f u nctions of the indicator lights, w hich are
located on the programmer mod u le, are as follo w s.
They are listed in the order yo u w ill find them on the
flame safeg u ard and is also the order in w hich they
w ill occ u r in the seq u ence. The indicators are
act u ally a red colored light emitting diode or LED, this
is ho w they w ill b e referred to from no w on.
1. Operatin g Control - This indicator is on w hen
po w er is present at terminals #1 and #7 of the
flame safeg u ard.
2. Air Flow - This indicator comes on at the same
time as the one a b o v e. This is b eca u se the
act u al circ u it is not u sed and is j u mped o u t. It
can b e u sed as a tro ub leshooting g u ide, that
po w er is present to terminals #6 and #8 in the
flame safeg u ard.