Carlin 702GAS Скачать руководство пользователя страница 23

MN702GE  060320

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Motor maintenance

•  Refer to motor manufacturer’s instructions for oiling the motor as needed.

Checking ignitor

 

Never test an ignitor by placing a screwdriver (or other metallic 

object) across the high voltage clips. This could cause ignitor 

damage or severe personal injury.

1.  Turn off the power to the burner/appliance. 
2.   Shut off gas supply to the burner. 
3.   Remove ignitor from back of panel. 
4.  Attach the spark plug clamp to the unpainted area of the ignitor plate 

using the screw from step 3. This grounds the spark plug. 

5.   Connect the ignitor lead to the spark plug. 
6.   Reapply power to the burner and, after the pre-purge timing, observe the 

spark. 

7.   If there is a spark, verify that the ignitor electrode is in the correct posi¬tion 

and not grounded to the diffuser plate. Remove the spark tester and 

replace the screw and ignitor lead. 

8.   If there is no spark, verify that there is 120 volts being supplied to the 

ignitor. If there is not 120 volts supplied, then replace the ignitor.

Thermal fuse

1. 

When the burner is in a high-overfire draft condition, and not properly 

adjusted, it is possible that the flame could flash back inside the air tube. 

If this occurs, the thermal fuse will open in less than two seconds. The 

fuse must be replaced. (The burner is supplied with spare fuses.)

8.  Maintenance and service procedures

When servicing the burner . . .

• 

DISCONNECT ELECTRICAL SUPPLY and all other electrical connec-

tions to burner before attempting to service to avoid electrical shock or 

possible injury from moving parts.

• 

CLOSE all manual gas valves before disconnecting any portion of fuel 

lines and before cleaning or removing any parts from the burner or 

related equipment.

• 

Burner and appliance components can be extremely hot. Allow all parts 

to cool before attempting to handle or service to avoid potential of severe 

burns.

 

Turn off power to appliance when servicing burner. After servicing, 

always operate burner/appliance to verify all components are 

functioning correctly and that the burner is properly adjusted. 

Failure to comply could result in severe personal injury, death 

or substantial property damage.

General maintenance

Cleaning blower wheel

1.  The blower wheel accumulates dust and debris from normal operation. 

You will need to clean the wheel blades periodically to prevent reduction 

in airflow. Inspect the blower wheel regularly by opening the housing 

cover.

2.  To clean blades, when necessary, remove the bolts securing the motor 

to the blower housing.
a.  Slide the motor out and rotate to remove and access blower wheel.

b.  Use a brush and vacuum to clean each blade and the blower housing 

interior.

c.  Install motor/wheel in blower housing and secure with the two bolts.

d.  Push wire slack back into junction box.

Replacing blower motor or wheel

1. 

If either the blower wheel or motor must be replaced, remove the bolts 

securing the motor to housing.

2.  Disconnect the motor wires in the burner panel.
3.  Loosen the Allen screw securing the blower to the motor shaft and remove 

the wheel.

4.  When assembling the replacement assembly, slide the wheel onto the 

motor shaft and use feeler gauges to set space between the blower wheel 

and the motor face. This space must be 3/16 inch.

5.  Install the motor/wheel assembly in the housing, wire the motor leads 

and secure the motor with the two bolts.

Содержание 702GAS

Страница 1: ...maintenance on back page for information regarding operation of this burner The burner Instruction Manual is intended only for your service technician The burner and heat exchanger must be inspected a...

Страница 2: ...heguidelinesbelowtoavoidpotentialsevere personal injury death or substantial property dam age Installer service technician Read all instructions before proceeding Perform all procedures and in the ord...

Страница 3: ...mply with the latest editions of Installation of Domestic Gas Conversion Burners ANSI Z21 8 National Fuel Gas Code ANSI Z223 1 NFPA 54 National Electrical Code ANSI NFPA 70 All additional applicable n...

Страница 4: ...into the burner through a manifold around the air tube The gas then circulates through a set of four orifice spuds into the air stream upstream of the retention ring The spin of the air flow at the re...

Страница 5: ...0 Btuh of all appliances in the space Do not install or operate the burner if any component is dam aged or if burner does not comply with other guidelines of this manual and the appliance manual Inspe...

Страница 6: ...u facturer s instructions Wire the switch into the appliance limit circuit to shut off the appliance burner if sustained downdraft should occur Refer to the appliance manufacturer s instruction manual...

Страница 7: ...2 Metal louvers or grilles free area area times 0 60 3 Screens when used must be no smaller than inch mesh Motorized vent dampers Wire the vent damper end switch to prevent operation of the burner un...

Страница 8: ...ications Whenfiringwithpositive overfire pressure do not exceed the pressure specified in the appliance manual Positive overfire pressure reduces maximum burner capacity See Page 3 for estimated reduc...

Страница 9: ...e a floor liner when possible The floor liner will improve firing in most applications Extend floor liner 3 to 4 inches up the side walls 4 Target wall liners Extend target wall liners at least 3 to 4...

Страница 10: ...ance opening so the end of the air tube is flush with or slightly short of the inside surface of the combustion chamber 4 Place gasket onto boiler front plate 5 Slide the end of the air tube into the...

Страница 11: ...enough ventilation to prevent overheating of the appliance burner and controls If there is risk of overheating you must install ventilation air openings sized large enough to provide air for cooling t...

Страница 12: ...e terminal strip inside the gas train J box b See the label in the burner junction box included Gas valve vent opening The V48 diaphragm gas valve is NOT fitted with a vent limiting orifice in the ven...

Страница 13: ...be more than the gas pressure at the burner gas train en trance minus 3 4 w c pressure required at entrance to butterfly valve See Figure 6 for gas train pressure drop information The standard gas tra...

Страница 14: ...990 810 690 620 2 2 750 1 900 1 520 1 300 1 150 2 4 350 3 000 2 400 2 050 1 850 Note 1 For natural gas with specific gravity other than 0 60 consult National Fuel Gas Code for correction factor PROPAN...

Страница 15: ...rmation for burner equipped with a primary control not covered in this manual see Figure 7A for a legend to callouts Turn off power to appliance when servicing burner Failure to comply could result in...

Страница 16: ...steam boiler activated Read the appliance manual for the location of the high fire control when used 3 See Figures 7 and 8 to connect the high fire control to the burner firing rate circuit 4 The burn...

Страница 17: ...nuals and wiring diagrams Gas manifold spud orifices sealed with pipe dope and tight Gas lines in good condition sized and designed correctly Gas line connections and fittings tight Burner appliance a...

Страница 18: ...et air damper linkage Table 5 Initial burner settings see the pages 18 through 22 for final adjustments using test instruments 6 Set burner initial head and damper positions continued 3 4 Determining...

Страница 19: ...e the maximum burner firing rate is reduced The firing rate is also reduced for altitudes higher than 2000 feet above sea level See page 3 for rating information 3 Adjust the burner fuel and air setti...

Страница 20: ...personal injury death or substantial property damage 3 Check the flame signal after the pilot has shut down to ensure the signal is still strong with main flame on 4 Move the burner fuel selector swi...

Страница 21: ...ly valve indicator until it is at 90 Disengage actuator motor Rotate linkage to high fire Tighten the two hex head screws while still holding the motor linkage arm in high fire Rotate linkage to low f...

Страница 22: ...ion with exhaust fans or other conditions operating 7 Adjust the burner using test instruments continued Combustion ventilation air Verify combustion ventilation air openings are not and will not be o...

Страница 23: ...s valves before disconnecting any portion of fuel lines and before cleaning or removing any parts from the burner or related equipment Burner and appliance components can be extremely hot Allow all pa...

Страница 24: ...season and to verify user is aware of proper operation and care of the burner appliance Review proper operation of the appliance burner unit with the user Turn off power to appliance Remove combustion...

Страница 25: ...Btuh Manifold gas pressure IWC High fire Low fire Inlet gas pressure IWC CO2 Gas Low Fire ______ Gas High Fire ______ Gas Low Fire ______ Gas High Fire ______ O2 Were limit controls tested Comments ab...

Страница 26: ...4 Combustion Head Assembly for 702GAS 7 4180002FS Gas Ignitor 8 35824S Motor Contactor 20 AMP R4242B1005 not shown ITEM PART NO DESCRIPTION 9 35311S C7027A1023 UV Scanner 97656S Q7800B1003 Sub Base 99...

Страница 27: ...appliance burner unit NEW PHOTO TO COME ITEM PART NO DESCRIPTION 16 35824S Motor Contactor 20 AMP R4242B1005 19 EMX51UVS EMX51UV KIT includes all of the below 35311S C7027A1023 UV Scanner 97656S Q780...

Страница 28: ...MN702GE 060320 28 10 Dimensions Figure 14 Dimensional data...

Страница 29: ...MN702GE 060320 29 10 Dimensions continued Figure 14A Dimensional data angled gas train...

Страница 30: ...and liquids Do not obstruct the flow of combustion and ventilating air Most motors currently used on residential type burners use permanently lubricated bearings and do not require field lubri cation...

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