Recommended Tools & Equipment - Atwood 79 Series Service Manual

Recommended Tools and Equipment
U-Tube Manometer - P/N 34706 - This is the most accurate device for measuring gas pressure. If you use a
dial-type manometer, it should be calibrated periodically with this type of manometer.
Slack Tube Manometer - P/N 34880 - A more portable U-Tube Manometer.
Multi-meter - This is the most effective meter capable of reading voltage, amperage and continuity. A test light
cannot give you specific enough information to trouble-shoot a furnace properly.
U-TUBE MANOMETER
with 1/8" pipe nipple
Fill here
Circuit Board Tester - P/N 32779 - This is a table top device that will test all furnace circuit boards. It will
specifically test the following board functions: power, spark, lamp, sense and valve. It will test Fenwal and
Channel circuit boards.
Air Speed Indicator - P/N 34207 - This hand held device will let you determine air flow out of a heat register. It
will help you isolate restricted ducting.
Incline Manometer - P/N 34208 - This meter measures the static pressure of the furnace cavity. It provides an
x-ray of the total heating system. It will indicate if all of the heat being produced by the furnace is being
sufficiently distributed out to the heat registers.
Long-handled Allen Wrenches (9/64˝ and 1/8˝) - These two wrenches are necessary to remove the blower
wheel and the combustion wheel.
Common Hand Tools - 1/4˝ nut drivers, open end wrenches, flat blade and Phillips screw drivers.
Leak Test Solution - A solution that bubbles when applied to gas fittings or connections showing where a gas
leak is present.
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Manometer
connection
CIRCUIT BOARD TESTER
VOLT OHM-AMP METER
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