CleaverBrooks Master Panel 8, Руководство по эксплуатации

Страница: 21 / 60

Master Panel 8 Section 2 — Operation
Part No. 750-375 2-11
Warm-up Blr Off (hot water only) — This timer is activated when the
main fuel valves for the specific boiler are de-energized. Upon
expiration of this timer, the boiler enters the warm-up sequence.
Warm-up Blr On (hot water only) — This timer is activated when the
main fuel valves for the specific boiler are energized. Upon expiration
of this timer, the warm-up sequence stops.
Warm-Up On/Off — Enables and disables the warm-up feature.
6. Firing Rate Screen
Water temperature (steam pressure) bar graph with display —
Displays outlet water temperature (steam pressure) in a common
header. Water temperature (steam pressure) is displayed digitally to
the left of the bar graph.
Set point temperature (pressure) bar graph with display — Displays
water temperature (steam pressure) set point. Set point is displayed
on the right side of the bar graph. Lead boiler’s “On” and “Off” points
are displayed above set point.
Control Output — bar graph displays control output (0 – 100%).
Select Set Point — selects Local or Remote set point control.
Mode — There are two modes for controlling firing rate, Manual
(Man) and Automatic (Auto).
Manual mode should be used for set up purposes only. Increase
and decrease output using the + and – buttons.
Automatic mode is used for normal operation. In this mode
water temperature (steam pressure) in the common header is
compared with the set point and control is achieved by
executing PID (Proportional Integral Derivative) control
algorithm.
Figure 2-9 Firing Rate Screen