Honeywell r7284 User manual

TECHNICIAN’S QUICK REFERENCE GUIDE
69-2500-01
R7284 Series
Electronic Oil Primary
The following service procedures will help you become familiar
with the R7284 electronic oil primary controls. For control
operation, please refer to the basic control functions described on
the back. For further information, wiring instructions and
troubleshooting, please refer to the R7284 Installation Instructions,
form number 69-2467.
Pump Priming Cycle
To facilitate purging air from the oil lines and filters, the R7284 can
be placed in a purge routine by pressing and releasing the up
arrow button during the Trial For Ignition.
In the advanced interface “PUMP PRIME” is displayed on the
display along with the time left on the Trial for Ignition (TFI).
Pressing the up arrow button adds a minute to the TFI time for a
maximum of 10 additional minutes (press the up arrow button 10
times). Pressing the down arrow button subtracts a minute from
the TFI time.
There is no visual indication for the basic interface control and the
purge timing is limited to five minutes.
Home Screens (Advanced Interface)
Pressing the “i” button longer than 2 seconds in states other than
Standby Interrupts control operation.
Once the held key is released a 3 second count down begins to
restart the cycle if the call for heat is still present.
• Holding all 3 buttons longer than 2 seconds in any state puts
the display in the Installer Setup (ISU) mode.
• Pressing “i” in any state enters the Diagnostic screen if
diagnostics are enabled outside of the Installer Setup mode.
• Pressing up or down in any screen enters Error History if
diagnostics are enabled outside of the Installer Setup mode.

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Below is a typical progression of screens through a normal cycle.
Pressing up or down during the Ignition Trial
enters pump prime.
Each press of the up button adds a minute,
each press of the down button subtracts a
minute from the pump prime time.
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 will
recover when error clears or after specified
time.
Control is in Hard Lockout. Hold “i” for at
least 2 seconds to reset.
Hold the “i” button longer than 10 seconds
to return to Standby.
Installer Setup (Advanced Interface)
Installer setup is entered by pushing all three buttons
simultaneously for 2 seconds.
If QUIT is selected, an “i” button press
displays the Re-baseline option.
If CONT is selected, an “i” button press
goes to “Installer Setup”.
NOTE: Not all parameters are adjustable in all models. Parame-
ters not available for adjustment will display “Locked”
when an attempt is made to modify them.

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R7284 SERIES
Select between English, French, or Spanish
by using the up or down buttons and the “i”
button to select
Adjustment of the Valve On Delay in five
second increments.
Ignition (lockout) Time adjustment.
NOTE: The Ignition Time is only available for adjustment during
the first 100 cycles of operation. After 100 cycles the
Ignition Time is locked in and can no longer be adjusted.
Adjustment of the Burner Off Delay. Burner
Off Delay can be adjusted in 15 second
increments from 0 to 8 minutes.
Configuration of the TT terminals vs. an
“internal jumper.” This option allows you to
jumper the TT terminals electronically so no
physical jumper is needed.
Controls sparking during On Delay period.
Controls sparking during Run mode
(Interrupted vs. Intermittent ignition).
Number of resets allowed before Restricted
Lockout
Appliance configuration (boiler, furnace,
water heater) for EnviraCOM™.
Enable advanced diagnostics mode and
error history. Selecting NO allows access to
error history and diagnostics only by
entering Installer Setup.
Exit installer setup
If “QUIT” is selected, the user is prompted
with a screen asking if it is desired to re-
baseline the control.
Error History Screens (Advanced Interface)
For all Error History screens, pressing “i” returns to the Normal
Screen.

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R7284 SERIES
From the home screen, press the up button to display most recent
error.
Press the up button again to proceed to the next most recent error
or the down button to return to the previous error screen.
These three screens transition every 3 sec.
If no more errors are logged, the display shows “Error History
End.”
BASIC USER INTERFACE
The basic user interface consists of 3 buttons and an LED. Simple
diagnostic information can be obtained through the interaction of
the buttons and LED.
R7284 Status (Basic Interface)
Table 1. LED Codes.
Description LED Code
Standby Pulse (1/4 sec. ON, 4 sec OFF)
Call for Heat Heartbeat (1/2 sec bright, 1/2 sec dim) *
Flame proven On solid
Recycle 2 second ON, 2 second OFF flashing
Lockout 1/2 second on, 1/2 second OFF flashing
Interrupt OFF
“i” button Flame Strength Indication
Up button Most recent error
Down button Next most recent error

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R7284 SERIES
R7284 Flame Strength (Basic Interface)
During normal operation and when the R7284 is in the Running
state, the LED will show CAD cell resistance. See Table 2.
Error History (Basic Interface)
The last two errors are available for display on the LED:
• Pressing the up arrow button displays the most recent error.
• Pressing the down arrow button displays the next most recent
error.
Once the up or down arrow is pushed, the LED will display the
most recent or next most recent alarm by blinking the error code.
See Table 3.
R7284 Error Codes (Basic Interface)
Table 2. Flame Strength Indication.
Flame Strength Indication Number of 1/2 sec flashes
Cad Cell less than 400Ω1
400Ω< Cad Cell < 800Ω2
800Ω< Cad Cell < 1600Ω3
1600Ω< Cad Cell < 6100Ω4
Cad Cell > 6100ΩNone
Table 3. Error Codes.
Error Codes
Number of 1/4
sec flashes
No ignition / Late ignition 1
Max flame losses / Cad Cell high while running 2
Flame out of sequence 3
Low Voltage / EnviraCOM™ error 4
Internal Error 5

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R7284 SERIES

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R7284 SERIES

Automation and Control Solutions
Honeywell International Inc.
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Golden Valley, MN 55422
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© 2010 Honeywell International Inc.
69-2500—01 M.S. 09-10
Printed in U.S.A.