Filter
Top Products
23
remains open if flame is sensed, or closes if
flame is not sensed.
e. If flame is not sensed, the entire sequence is
repeated four more times before “lockout”
occurs. To reset, wait 30 seconds and then
interrupt the 24 VAC power by turning the
room thermostat below room temperature,
then returning it to the original set point.
f. If flame is not established on the fifth trial for
ignition (initial try + 4 re-tries), the control de-
energizes the gas valve, flashes “4” on the
Status LED, and lockouts out heat operation
for 1 hour.
g. If a flame is present, the control energizes the
main blower on heat speed 30 seconds after
the gas valve opens.
h. When call for heat is satisfied the thermostat
contacts open, the gas valve shuts off gas
flow and the combustion blower remains on
for a 30 second post-purge period.
i. The main blower is de-energized after a 120
second blower off delay.
!
WARNING:
FOR YOUR SAFETY; WHAT TO DO IF
YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do
not use any phone in your building.
• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
• If you cannot reach your gas sup-
plier, call the fire department. Should
overheating occur or the gas supply
fail to shut off, disconnect the power
at the main circuit breaker and then
see “To Turn Off Gas To Appliance.”
OPERATING INSTRUCTIONS FOR
OIL AND GAS GUN FURNACE:
Oil Gun Model
M1 oil gun furnaces may be converted to gas
gun in the field by using the proper conversion
kit listed in the RPL.
If your furnace model number begins with M1S*,
the furnace is equipped with an ignition device
which automatically lights the burner.
Do not try to light this furnace manually
.
a. Open all valves in the oil line.
b. Be sure the fire door is closed.
c. Set the On-Off switch to “ON”.
d. Set the thermostat to the desired setting.
SEQUENCE OF OPERATION FOR
OIL GUN MODELS
Oil Furnace - Honeywell R7184 Control
1. When a call for heat is initiated, there is a 2-
6 second delay while the control performs a
safe start check.
2. The ignition and motor are turned on and a
flame should be established within the 15-
second lockout time. NOTE: Burner will
prepurge for 15 seconds if equipped with
R7184B Control.
3. If flame is not sensed within the 15-second
lockout time, the control shuts down on
safety lockout and must be manually reset.
If control locks over three times in a row, the
control enters restricted lockout. To reset,
hold down the reset button for 30 seconds
until the LED flashes twice.
4. Once flame is established, the ignition re-
mains on 10 seconds to ensure flame stabil-
ity. It then turns off.
5. The circulating air blower will energize after
the temperature fan switch closes.
6. The furnace runs until the call for heat is
satisfied.
7. The circulating air blower will de-energize
when the temperature fan switch opens.
!
WARNING:
If furnace still does not light, turn the
furnace off (described above) and call
your technician. In the event of any
flashback or explosion, immediately
shut off furnace and call your service
technician.
Gas Gun Models
M1 gas gun furnaces may be converted to oil
gun in the field by using the proper conversion
kit listed in the RPL.
If your furnace model number begins with M1B*,
the furnace does not have a pilot. Ignition is