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10 Cards in this Set
- Front
- Back
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What precautions are required when mounting any gas furnace on a wood platform in an attic:
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NONE |
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The gas control valve may be damaged if exposed to an inlet pressure above. |
14 IN W.C. |
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How many elbows and joints should a vent connector have:
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As few as possible to reduce resistance. |
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The technician is installing a vent system for a condensing gas furnace. The furnace is several feet from a gas water heater. What conditions, if any may the technician route the exhaust of the furnace into the exhaust vent of the water heater: |
Under no conditions may you use the water heater exhaust vent.
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How may a technician terminate the intake and exhaust for proper operation of a high efficiency gas furnace when using scheduled 40 PVC pipe:
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By using the specific manufacturers termination kit or make one to meet their requirements.
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When suspended with metal strap and no saddle, flexible duct should be: |
Supported with a minimum strap width of 1/2" |
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A technician is installing a gas furnace and the customer has decided not to install an air conditioner. Making this decision, the affect it will have on the installation of the supply ductwork is: |
Adequate space should be allowed for addition of a coil in the future when feasible |
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Leveling a Mercury bulb is: |
Critical |
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Spray-type atomizing humidifiers are installed to:
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Discharge moisture into the supply duct.
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Electronic air cleaners (EAC) installed in a gas furnace system should be wired so they:
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Only operate any time the EAC On-Off switch is turned to ON.
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