There are numerous bolt patterns used on our chillers. Illustrated above are three common configurations. If the unit that you are working on does not match one of these use the written instructions below.

1. Start at a top bolt or 12 o’clock, torque bolt.
2. Move 180 degrees to a bottom bolt or 6 o’clock, torque bolt.
3. Move 90 degrees to a bolt at 9 o’clock, torque bolt.
4. Move 180 degrees to a bolt at 3 o’clock, torque bolt.
5. Go back to the top and move clockwise one bolt and start the sequence over. Continue using the steps outlined above, using the torque steps listed in the chart at the right.

*    All torque values are expressed in foot pounds.
**    Units designed for low temperature operation (-20 degrees Fahrenheit and lower) will use B7 or B7M bolts. These bolts may have larger heads as follows: 1/2” bolt = 7/8” hex, 5/8” = 1-1/16” and 3/4” = 1-1/4”.