3
Fig. 1 — Heat Section Details
See Fig. 1 for location of gas valve(s). Refer to Fig. 2 while
proceeding with the following steps.
1. Turn off the unit demand for cooling or heating by using
the scrolling marquee. The scrolling marquee is located in
the control box at the compressor end of the unit.
a. Push the
key until a blank display screen is
shown.
b. Push the
▼
key until the SERVICE TEST LED is lit.
c. Push the
key. The display will show STOP.
d. Push the
key again. The NO/YES display
will flash.
e. 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.
NOTE: If this is the first installation of the unit, the gas flue hoods
must be installed before operating unit. These must be installed for
the unit to run properly.
6. Move the switch on the gas valves to the ON position.
7. Close the burner section hinged access door.
8. Turn on the electrical supply to the units.
9. Open the field-installed manual gas valve.
LIMIT
S
WITCH
NO. 1
S
ECTION 1
S
ECTION 2
LIMIT
S
WITCH
NO. 2
GA
S
VALVE
GA
S
VALVE
FLUE
OUTLET
FLUE
OUTLET
NOTE: High heat consists of sections 1 and 2. Low heat consists
of section 1 only.
030-050 SIZES
GA
S
VALVE
FLUE
OUTLET
LIMIT
S
WITCH
NO. 1
S
ECTION 1
S
ECTION 2
LIMIT
S
WITCH
NO. 2
FLUE
OUTLET
GA
S
VALVE
GA
S
VALVE
FLUE
OUTLET
LIMIT
S
WITCH
NO. 1
S
ECTION 1
LIMIT
S
WITCH
NO. 2
S
ECTION 2
FLUE
OUTLET
GA
S
VALVE
S
ECTION
3
FLUE
OUTLET
GA
S
VALVE
NOTE: High heat consists of sections 1-3. Low heat consists of
sections 1 and 2 only.
055-100 SIZES HIGH HEAT
NOTE: High heat consists of sections 1-3. Low heat consists of
sections 1 and 2 only.
055-100 SIZES LOW HEAT
ESCAPE
ENTER
ENTER
ENTER
