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4
4. Remove the front access panel.
5. Movetheselectorswitch ontheinternalgasvalvetotheOFF
position.
6. Replace the front access panel
7. Restore electrical power to theunit and setsystem switch to
COOL.
8. Set the temperature selector on UI slightly below the room
temperature t o s tart unit.
To shut off unit electric cooling:
Refer to Fig. 6 while proceeding with the f ollowing steps.
1. SetthetemperatureselectoronUItohighesttemperatureset-
ting and set system SWITCH to OFF.
2. Close the external manual shutoff valve.
3. Turn off the electrical power supply to the unit.
55
STEP 1 STEP 2
C
L
O
S
E
STEP 3
OFF
ON
MAIN
STEP 4
STEP 7
OFF
ON
MAIN
STEP 8
STEP 5
72
STEP 10
STEP 6
STEP 9
O
P
E
N
A09133
Fig. 4 -- To Start Unit Gas Heat