Honeywell r7284 Operator's Manual page 21

Start System
1. Make sure burner is powered.
2. Set thermostat to call for heat.
3. Make sure burner lights and operates until call
for heat ends. Note cad cell resistance while
running.
4. Verify that burner turns off when thermostat call
for heat is satisfied.
Fig. 12. R7284 terminals, connectors, LED, reset button
Display
Fig. 13 R7284 Wiring Connections
Home Screens
Pressing the "i" button longer than 2 seconds in
states other than Standby interrupts control opera-
tion.
Once the held key is released the count down be-
gins.
• Holding all 3 buttons longer than 2 seconds in
any state goes to installer Setup (ISU).
• Pressing "i" in any state enters the Diagnostic
screen (if diagnostics are enabled).
• Pressing up or down in any screen enters Error
History (if diagnostics are enabled).
Up Button
Down Button
"i" button
Terminals
Section: Honeywell Electronic Oil Primary
Below is a typical progression of screens through a
normal cycle.
STANDBY
CALL FOR HEAT
IGNITION TRIAL
0:15
RUNNING
255 OHMS
If at any point there is an event generating a lockout,
one of the following screens will be displayed.
Control is in Soft Lockout. Control
SOFT LOCKOUT
will recover when error clears or
15:00
after specified time.
HARD LOCKOUT
Control is in Hard Lockout. Hold
"i" for at least 2 seconds to reset.
HARD LOCKOUT
Hold the "i" button longer than 10
CALL SERVICE
seconds to return to Standby.
View History
From the Diagnostic screen, scroll to the View
History screen and select YES. Scroll through the
performance data by using the up or down buttons.
The CAD Cell screen automati-
CAD CELL
cally scrolls 4 screens.
LAST CYCLE Average CAD cell value during
200 OHMS
last cycle.
LAST 10 CYCLES
CAD cell trend over the last 10
250 OHMS
cycles.
BASELINE
CAD cell trend over the first 500
200 OHMS
cycles.
Pressing "i" during any of the CAD cell screens
moves to the Ignition Time screens below.
The Ignition Time screen au-
IGNITION TIME
tomatically scrolls through 4
screens.
LAST CYCLE
11 SECONDS
Last Ignition Time.
LAST 10 CYCLES Ignition Time trend over the last
11 SECONDS
10 cycles. Ignition.
BASELINE
Time trend over the first 500
8 SECONDS
cycles.
KNA Burner Manual 9.801-300.0 rev. 8/13
21