14.3.3
Observation of operation
Many specifications require the HVAC contractor to certify in writing
that the HVAC systems and controls are operating as designed and
specified. This should not be sufficient to satisfy a competent, profes-
sional designer. There is no substitute for personal observation of sys-
tem operation, not for just a few hours but for several times under
varying load and climatic conditions. Among other things, this will
expose any need to adjust controller gains and set points as system
gains change with the load (see Chap. 8).
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