Design Dynamics VF-18N-MHD Gas Heater User Manual


 
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116986-01H 17
OPERATION
Continued

To save battery power, press to turn main
gas to pilot gas. Press the OFF button to
shut off the device including pilot ame. The
device can be shut off with ON/OFF switch,
thus disabling remote hand set.

Press and hold OFF and
until display
changes from °F (and 12 hour clock) to °C
(and 24 hour clock) or vice versa.

After connecting battery or by simultane-
ously pressing
and the display will
start to ash. You are in the set mode.
From SET mode press
to set the hour
and
to set the minute.
Wait or press OFF to return to manual
mode.

Remote handset battery needs to be changed
when LED is dim. Battery life expectancy is
2 to 3 years. Replacement is recommended
at the beginning of heating season. Battery
needs to be changed when acoustic error
message appears during ignition (see Identify-
ing Error Signals from Receiver, page 24).

Press the SET button quickly to change the
mode of operation in the following order:
MAN,
TEMP, TEMP, TIMER.
Manual ame height adjustment (MAN ap-
pears on display): Press
to turn on the
re (main burner) or to increase ame height.
Press to decrease ame or to go down
to pilot only. The receiver acknowledges the
transmission with an acoustic signal.
The day time temperature mode (
TEMP
appears on display): The sensor in the
transmitter measures room temperature.
The controller compares the room tem-
perature with set temperature and sends
a signal to the receiver to turn gas valve
motor up or down, to adjust ame height
accordingly.
The nighttime setback temperature (
TEMP appears on display): The sensor in
the transmitter measures the temperature
and adjusts it according to the nighttime
setback temperature. There is a bigger
temperature differential during this cycle.
Timer: The timer mode (TIMER) operates
much like the temperature mode above.
The timer setting allows you to set specic
times for on and off. (There are 2 burner
on and 2 burner off cycles every 24 hours.)
If the reading for the nighttime temp. is
"– – –", the motor will turn off the valve to
standby pilot position and wait for the next
burner on cycle. This display shows the
setting temperature every 30 seconds.

Select the desired mode of operation
(day or night) by pressing the SET button
briey.
Hold SET button until display ashes.
Set temperature with the
or (40°F is
the minimum temperature).
Wait or press OFF to go to temperature
control mode.
If temperature control in moon times
should be off (lower battery consumption),
decrease night temperature until "– – –"
appears on display.
Set Timer
Switch to timer mode by pressing the SET
button briey.
Press the SET button until P1
ashes.
Set hours with
and minutes with .
Press SET briey for the next burner cycle
time.
If all 4 times are set, pressing the OFF but-
ton or waiting will complete programming.

Press OFF button on remote control to switch
off main gas and pilot gas.

Press to decrease the ame height and
shut off main burner.
SET
OFF
STAND
BY
Figure 18 - Control Panel for Hand-Held
Remote