Recommended Tools And Equipment - Atwood AFS Series Training Manual

Disclaimer: The data presented in this publication is obtained from the most reliable sources, and is
believed to be authentic as of the date of publication. Responsibility for typographical errors or omission
of data cannot be assumed by the publishers.

Recommended Tools and Equipment

U-Tube Manometer – 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.
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.
Circuit Board Tester – 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 – This hand held device will let you determine air flow out of a heat register. It will
help you isolate restricted ducting.
Incline Manometer – 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 wheels and combustion wheels from old models.
Common Hand Tools – ¼" nut driver, open end wrenches, flat blade and Phillips screw drivers.
4