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19

COMBUSTION AIR INDUCER

Under normal operating conditions, the combustion air inducer should be checked and cleaned prior to the heating season 

with the power supply disconnected. Use a small brush to clean inducer wheel.

ELECTRICAL

1. Check all wiring for loose connections.

2. Check for correct voltage at unit (unit operating).

3. Check amperage draw.

FLUE AND CHIMNEY

Check all vent and vent connector joints for tightness. Ensure that connections are sealed and that there are no blockages.

FAILURE TO OPERATE

If unit fails to operate check the following:

1. Is thermostat calling for heat?

2. Is main disconnect closed?

3. Is there a breaker tripped or a fuse blown?

4. Is gas turned on at meter?

5. Is manual shutoff valve open?

6. Is unit ignition system in lock out? If unit locks out again, call service technician to inspect unit.

7. Is pressure switch closed? Obstructed flue will cause unit to shut off at pressure switch. Check flue passage and outlet.

SAFETY SHUT−OFF VALVE TEST

The safety shut−off valve test procedure is as follows:

1. Turn off the manual gas valve.

2. Set the thermostat to call for heat.

3. System begins normal sequence of operation.

4. After approximately 30 seconds (pre purge period) the LED will fast flash indicating the gas valve is powered.

5. After 10 seconds, the gas valve closes and steps 4 and 5 will repeat two additional times before locking flashes on  

  the LED.

6. To restart the system, de−energize the thermostat call for heat and follow the operating instructions under Unit Start−Up  

  and Operation.

NOTE

: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty.

PARTS UNDER WARRANTY

 

Call Customer Service toll free at (877)886-5989

 

for referral information. 

When calling Customer Service, have ready:

• 

Your name

• 

Your address

• 

Model and serial number of your heater

• 

How heater was malfunctioning

• 

Type of gas used (Propane/LP or Natural gas/NG)

• 

Purchase date

• 

Usually, we will ask you to return the defective part to the factory

PARTS NOT UNDER WARRANTY

 

Call Customer Service toll free at (877)886-5989 for referral information.

When calling Customer Service have ready:

• 

Model number of your heater

• 

The replacement part number

REPLACEMENT PARTS

Содержание GHBVL50

Страница 1: ...tomer service department at 1 877 886 5989 8 00 a m 4 30p m EST Monday Friday or e mail customerservice usaprocom com WARNING IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY A FIRE OR EXPLOS...

Страница 2: ...acement Parts 19 WARNING Read the installation operation instructions before using this appliance IMPORTANT Read instructions and warnings carefully before starting installation Failure to follow thes...

Страница 3: ...rols can be dangerous WARNING Fire burn inhalation and explosion hazard Keep solid combustibles such as building materials paper or cardboard a safe distance away from the heater as recommended by the...

Страница 4: ...hese unit heaters are certified for installation to combustible material as listed in Table 1 Unit Clearances and on unit rating plate Accessibility and service clearances must be observed in addition...

Страница 5: ...ers directing airflow as desired 2 Choose location for mounting brackets 3 Remove and retain three screws along top edge bottom edge when inverted of front of unit 4 Align screw holes on mounting brac...

Страница 6: ...plicable as well as the modifications and imitations listed in figure 3 Seal single wall vent material according to section General Recommendations and Requirements 2 The vent connector shall be 4 102...

Страница 7: ...ing may be troublesome and may cause some staining Avoid windows where steam may cause fogging or ice buildup 5 When horizontally vented minimum clearance for termination from any door window gravity...

Страница 8: ...ll vent material according to the section General Recommendations and Requirements In areas where local authorities having jurisdiction permit a downward slope of maximum 1 4 6mm per foot 305mm is als...

Страница 9: ...rizontal Venting General and Horizontal Venting Residential 2 The vent pipe diameter for horizontal residential installations shall be 4 102mm on 45K Btu hr units and 75K Btu hr units A standard vent...

Страница 10: ...recognized standards lined or relined with suitable materials or replaced with a gas vent or chimney suitable for venting unit heaters The chimney passageway must be checked periodically to ensure tha...

Страница 11: ...11 Electrical Connections...

Страница 12: ...s a precise instrument Please handle it with care Turn off electricity to the appliance before installing or servicing thermostat or any part of the system Do not turn electricity back on until work i...

Страница 13: ...er must supply an external regulator for liquid propane The external regulator is provided by the gas supplier for natural gas The external regulator will reduce incoming gas pressure You must reduce...

Страница 14: ...ment trap in a supply line as shown in Fig 9 Locate sediment trap where it is within reach for cleaning and not likely to freeze Install in the piping system between fuel supply and heater A sediment...

Страница 15: ...Pressure supply piping system by either using compressed air or opening gas supply tank valve 3 Check all joints from gas meter to equipment shutoff valve see Fig 13 Apply mixture of liquid soap and...

Страница 16: ...will snap to OFF See Figure 17 6 Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you then smell gas STOP FOLLOW B in the saftey information above If you do not...

Страница 17: ...on control failure When thermostat is placed in continuous fan mode LED will slowly flash High Altitude Adjustments Units may be fired at full input up to 2000 feet 610m above sea level Above 2000 fee...

Страница 18: ...w of gas Gas Pressure Adjustment 1 Check gas line pressure with unit firing at maximum rate A minimum of 7 178mm w c for natural gas or 10 4 264mm w c for LP propane gas should be maintained for prope...

Страница 19: ...procedure is as follows 1 Turn off the manual gas valve 2 Set the thermostat to call for heat 3 System begins normal sequence of operation 4 After approximately 30 seconds pre purge period the LED wil...

Страница 20: ...15 PRESSURE SWITCH TUBE GHBV48306 GHBV48306 1 16 INDUCED DRAFT MOTOR GHBV48320 GHBV48320 1 17 VENT ADAPTER GHBV78321 GHBV78321 1 18 INDUCED DRAFT MOTOR GASKET GHBV48220 GHBV48220 1 19 BACK BRACKET GHB...

Страница 21: ...21 ILLUSTRATED PARTS GHBVN50 GHBVN80...

Страница 22: ...ginal factory replacement parts voids this warranty The heater MUST be installed by a qualified installer in accordance with all local codes and instructions furnished with the unit WHAT IS NOT COVERE...

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