520 Indoor / 520 Outdoor Service Manual
Ver. 1.00
81
CONFIDENTIAL
5. Press and hold down the “MIN” button on the computer board. While holding down the “MIN”
button, press either the “Increase” or “Decrease” button to increase or decrease the manifold gas
pressure, respectively (Figure 3). Refer to the manometer to verify that pressure has been set to
desired value.
6. After gas pressure has been set, deactivate the
520 Indoor or 520 Outdoor
, remove the manometer
tube, and replace the port screw.
Figure 2
To Manometer
Tube
520 models Computer board
Figure 3
MAX button
MIN button
Increase button
Decrease button
Figure 1
Manifold port
