In this lesson, we will use examples from real mechanical plans and discuss how to read and interpret them. Here is an example of the Variable Air Volume Box mechanical plans and schedule. The schedule is used to confirm components against the mechanical plans. The schedule is also used to confirm the material count taken from the mechanical floor plan.
It's important to review any notes, highlight any notes that apply to Siemens, and review the quantity of mechanical equipment on the job. I would like to mention that this is important because both sales and design engineers need to cross-reference the schedule against the mechanical plans. Any discrepancies between the two requires an RFI.
This example shows the rooftop air handling unit mechanical plans, schedule, and symbols. The process is the same as in the previous example. Review the schedule and mechanical plans carefully and compare the information. Any discrepancies should be clarified through an RFI.
Additionally, highlight any information that pertains to Siemens. Keep in mind, the equipment schedules may be long enough that the table is broken into two sections as shown in this example. Now let's look at summary tables commonly referred to as a points list which are found in some form or another on all plans that include building automation.
A points list simply specifies the input and output points that are required for a project. Specifying points is a great method for getting what is needed on a direct digital controller DDC project. Direct digital controllers are used to automate the HVAC and other building automation components. You will need to compare the points list with the detailed drawing and the sequence of operation to make sure that all points are accounted for.
We will address the sequence of operation in detail later in this training. As a reminder, although the sequence of operation is included as part of the plans for this job, they are normally included in the specification. If there are any discrepancies, an RFI should be submitted.
Oh, we've completed this lesson.