5
TO SHUT UNIT OFF
Refer to Fig. 1 for location of gas valve(s). See Fig. 3 while
proceeding with the following steps.
1. Turn off the unit demand for cooling or heating by using
the Navigator device. The Navigator device is located in
the control box.
a. Push the
key until “Select a Menu Item” is
shown.
b. Push the
key until the SERVICE TEST LED is
lit.
c. Push the
key.
d. Push the
key to move the flashing cursor to
STOP.
e. Push the
key again. The NO/YES display
will flash.
f. Push the
or
key to toggle the display to YES
and then push
. The unit will be locked off
from heating, cooling or any operation. The controls
will still function and the display will still operate.
2. Close the field-installed manual gas shutoff valve.
3. Turn off the electrical power to the unit using the optional
disconnect or the field-installed disconnect and lock off
using proper lockout and tag-out procedures.
4. Open the burner section hinged access door.
5. Move the switch on the gas valves to the OFF position and
wait 5 minutes before doing any service in the section or
on the piping.
6. Close the burner section hinged access door.
7. If unit is being shut down because of a malfunction, call
your dealer as soon as possible.
If unit is being shut down because the heating season has ended,
restore electrical power to the unit and reset the Navigator device
to RUN mode to ensure operation of the cooling system during the
cooling season. Refer to the unit Controls, Start-Up, Operation,
Service and Troubleshooting literature for more information.
Do not use this unit if any part has been under water. Immedi-
ately call a qualified service technician to inspect the unit and
to replace any part of the control system and gas control that
has been under water.
Fig. 3 — To Shut Unit Off
WARNING
1. Do not turn off the electrical power to unit without first
turning off the gas supply.
2. Never attempt to manually light the main burners on
unit with a match, lighter, or any other flame. If the
electric sparking device fails to light the main burners,
refer to the following shutdown procedures. Call your
dealer as soon as possible.
Failure to follow these procedures can result in serious fire
or personal injury.
ESCAPE
ENTER
ENTER
ENTER
CAUTION
Ensure clearances are in accordance with local installation
codes, the requirements of the gas supplier and the manu-
facturer's installation instructions.
ATTENTION
Assurez-vous que les dégagements sont conformes aux
codes d'installation locaux, aux exigences du fournisseur de
gaz et aux instructions d'installation du fabricant.
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
STEP 7
LOCK-OUT
TAG
ON
OFF
MAIN
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ervice
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Inp
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Config
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Time Clo
ck
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ting M
ode
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Al
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Al
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TIME
EWT
LWT
S
ETP
1 2 . 5
8
5 4 . 6
F
4 4 . 1
F
4 4 . 0
F
N A V
I G A
T O R
Co m
f o r t
Li n k
