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LENNOX HEARTH PRODUCTS • MERIT PLUS
Transmission
Thermostat
Off/On/Smart
Set Point
Temp./Level/State
Flame On
Figure 4
Flame Level 5
Figure 5
Blue LCD Display
ON/OFF Key
ROOM
TEMPERATURE
Key
UP/DOWN
Arrow Key
MODE Key
Figure 7
Install the 3 AAA type batteries in the Trans-
mitter battery bay, located on the base of the
Transmitter. With the batteries already installed
in the Transmitter, push the ON button. The
Receiver will "beep" four times to indicate the
Transmitter's command is accepted and sets
to the particular code of that Transmitter. The
system is now initialized.
DIRECT VENT GAS FIREPLACES (MPDP35/40) • CARE AND OPERATION INSTRUCTIONS
®
Child Safety Lock-Out
Low Battery Alarm
Room Temperature
Fan Control
Maximum Level Indicatiors
Indicator Icons
Flame Level Maximum
Figure 6
Low Battery Power Detection
The life span of the Receiver batteries depends
on various factors: quality of the batteries used,
the number of ignitions of the appliance, the
number of changes to the room thermostat
set point, etc.
When the Receiver batteries are low, two
"beeps" will be emitted from the Receiver
when it receives and ON/OFF command from
the Transmitter.
This is an alert for a low battery condition for
the Receiver. When the batteries are replaced
the "beep" will be emitted from the Receiver
when the ON/OFF key is pressed (See Initial-
izing The System).
When the transmitter batteries are low, a bat-
tery icon will appear on the LCD display of the
transmitter before all battery power is lost.
When the batteries are replaced this icon will
disappear.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
WARNING
Fire hazard. Can cause severe
injury or death. The receiver
causes ignition of the appli-
ance. The appliance can turn on
suddenly. Keep away from the
appliance burner when operating
the remote system or activating
manual bypass of the remote
system.
CAUTION
Property damage hazard. Exces-
sive heat can cause property
damage. The appliance can stay
lit for many hours. Turn off the
appliance if it is not going to be
attended for any length of time.
Always place the Transmitter
where children can not reach it.
Temperature Indicator Display
With the system in the "OFF" position, press the
Thermostat Key and the Mode Key at the same
time (see Figure 7). Look at the LCD screen on
the Transmitter to verify that a C or F is visible
to the right of the Room Temperature display
(see Figure 4).
Turn On The Appliance
Press the ON/OFF Key on the Transmitter. The
Transmitter display will show all active Icons
on the screen. At the same time, the Receiver
connects the thermopile to the gas valve millivolt
coil and the appliance main burner turns on.
A single "beep" from the Receiver will confirm
reception of the command.
Turn Off The Appliance
Press the ON/OFF Key on the Transmitter. The
Transmitter LCD display will only show the room
temperature and Icon. At the same time, the
Receiver disconnects the thermopile from the
gas valve millivolt coil and the appliance burner
turns off. A single "beep" from the Receiver
confirms reception of the command.
Remote Flame Control
The system has six (6) flame levels. See
Figure 5 for an example. With the system
on, and the flame level at the maximum in
the appliance, pressing the Down Arrow Key
once will reduce the flame height by one step
until the flame is turned off.
9
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