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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

Summary of Contents for 48P 030

Page 1: ...diatement Appeler imm diatement le fournisseur de gaz en utilisant le t l phone d un voisin Suivre les instructions du fournisseur de gaz Si le fournisseur de gaz n est pas accessible appeler le servi...

Page 2: ...gas valve to the unit before shutting off the electrical supply AVERTISSEMENT En cas de temp rature excessive ou s il est impossible de couper l alimentation en gaz fermer le robinet manuel d ali ment...

Page 3: ...ection 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 oper...

Page 4: ...t units with a conven tional thermostat are set to heating control temperature On VAV variable air volume and constant volume units with a space temperature sensor make sure that the set points are at...

Page 5: ...ecause 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 scrolling marquee to Run...

Page 6: ...rication is not recommended Bearings will not require lu brication for at least 5 years of normal operation After 5 years motor life can be extended by having the motors serviced at an authorized moto...

Page 7: ...in the burners firing out of normal time sequence This delayed ignition is characterized by an especially loud sound See Fig 1 and 4 and proceed as follows to inspect the combus tion area and power ve...

Page 8: ...tions Repair or adjustment should be made at this time 14 Your servicing dealer may offer an economical service contract that covers seasonal inspections Ask for further details Complete Service Instr...

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