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Page 10

506488-01

Issue 1008

START-UP

Pre-Start Check List

Complete the following checks before starting the unit:

1. Check the type of gas being supplied. Be sure it is the

same as listed on the unit nameplate.

2. Make sure that the vent hood has been properly installed.

To Light Burners:

1. Turn off electrical power to unit.

2. Turn the thermostat to lowest setting.

3. Turn the gas control knob, or slide the gas control switch,

to the “ON” position (see Figure 9).

4. Turn on electrical power to the unit.

5. Set the room thermostat to the desired temperature.

(If the thermostat “set” temperature is above room
temperature, the burners will light after the pre-purge
time expires.)

To Shut Down Burners:

1. Turn off electrical power to unit.

2. Turn the gas control knob, or slide the gas control switch,

to the “OFF” position (see Figure 9).

Post-Start Check List

After the entire control circuit has been energized and the
heating section is operating, make the following checks:

1. Check for gas leaks, using soapy solution, in the unit

piping as well as the supply piping.

2. Check for correct manifold gas pressures (see following

Checking and Adjusting Gas Input section).

3. Check the supply gas pressure.  It must be within the

limits shown on the rating plate.  Supply pressure should
be checked with all gas appliances in the building at full
fire. At no time should the supply pressure during standby
exceed 13" w.c., nor should it be less than 5" w.c. for

For Your Safety Read Before Lighting

natural gas or 11" W.C. for propane gas with the burners
in operation.  If gas pressure is outside these limits,
contact the gas supplier for corrective action.

4. Adjust temperature rise to be within the range specified

on the rating plate.

Checking and Adjusting Gas Input

For purpose of input adjustment, the minimum
permissible gas supply pressure is 5" w.c. for natural gas
and 11" w.c. for propane.

Gas input must never exceed the input capacity shown on
the rating plate. 

 The furnace is equipped for natural gas

rated inputs with manifold pressure of 3.5" w.c.

The manifold pressure can be measured by shutting off the
gas, removing the pipe plug in the downstream side of the gas
valve, and connecting a water manometer or gauge.  To adjust
the regulator, turn the adjusting screw on the regulator
clockwise to increase pressure and input or counterclockwise
to decrease pressure and input.  

The final manifold pressure

should not vary more than 0.3" w.c. from the above
specified pressure. 

 See Figure 9 to assist in locating the

regulator on the gas valve.

Furnace is equipped with a direct ignition control. Do not
attempt to manually light the burners.

 CAUTION

Figure 9

Gas Valves

Regulator

Adjustment

Cap

Gas

Control

Knob

Inlet Pressure Tap

1/8" NPT

Outlet Pressure Tap

(Manifold Pressure)

1/8" NPT

Gas Control Switch

Inlet Pressure Tap

1/8" NPT

Outlet Pressure Tap

(Manifold Pressure)

1/8" NPT

Regulator

Adjustment

Cap

Summary of Contents for 4PGE

Page 1: ...it WARNING INSTALLATION AND MAINTENANCE INSTRUCTIONS 4PGE SG 13 15 Series Gas Heating Electric Cooling Package Unit Save these instructions for future reference The installation of the furnace wiring...

Page 2: ...er charge and airflow may reduce energy efficiency and shorten equipment life Inspection As soon as the unit is received it should be inspected for possible damage during transit If damage is evident...

Page 3: ...pers that will provide continuous heating is not allowed The return air duct must be provided and sealed to the unit Return air temperature must be maintained between 60 F 16 C and 80 F 27 C Air filte...

Page 4: ...above any door window or gravity air inlet into the building The vent system shall terminate at least 3 above any forced air inlet located within 10 The unit shall be installed in a manner such that s...

Page 5: ...nnected to the venting system being placed into operation while all other appliances connected to the common venting system are not in operation 1 Seal any unused openings in the common venting system...

Page 6: ...pening Filters Air filters are to be used with this heating cooling unit Filters are not factory supplied in the unit However a filter frame accessory is available from the manufacturer that allows fi...

Page 7: ...trap drip leg shall be installed as close as practical to the gas supply inlet of the unit LPG Propane Units Tanks and Piping Units are shipped equipped for natural gas but can be converted to LPG pro...

Page 8: ...wiring must be sized to carry minimum circuit ampacity marked on the unit Use copper conductors only Each unit must be wired with a separate branch circuit and be properly fused Thermostat The room t...

Page 9: ...Used WITHOUT ECONOMIZER L2 L1 POWER WIRING 208 230 1 60 75 C MIN WIRE POWER WIRING 24V CONTROL WIRING NEC CLASS 2 GROUND SCREW SINGLE PHASE L1 L2 L3 GROUND SCREW POWER WIRING 200 230 3 60 460 575 3 6...

Page 10: ...hould the supply pressure during standby exceed 13 w c nor should it be less than 5 w c for For Your Safety Read Before Lighting natural gas or 11 W C for propane gas with the burners in operation If...

Page 11: ...contained factory optimized refrigerant system and should require no adjustments when properly installed If however unit performance is questioned perform the following checks OPERATION The heating v...

Page 12: ...t work for air leaks as well as restrictions and blower speed settings If unit performance remains questionable remove charge evacuate to 500 Microns and weigh in refrigerant to name plate charge It i...

Page 13: ...loperateswhenahightemperature condition caused by inadequate airflow occurs This causes the ignition control to close the gas valve The circulation air blower continues to operate in this situation Pr...

Page 14: ...low tipping of the natural gas burner flame or long yellow tips on propane may be caused by lint accumulation or dirt inside the burner or burner ports at the air inlet between the burner and manifold...

Page 15: ...506488 01 Page 15 Issue 1008 Figure 11 Connection Diagram Single Phase PSC Motor...

Page 16: ...N 75 C WIRE WARNING ELECTRIC SHOCK HAZARD UNIT MUST BE GROUNDED IN ACCORDANCE WITH NATIONAL AND LOCAL CODES HEAT ANTICIPATION SETTING 0 70 AMP LINE VOLTAGE FIELD INSTALLED SEE BLOWER SPEED CHART BLK S...

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