Raypak B6000 - Manual (Page 34)

Page 34
*Pconst
Proportional ratio which causes the boiler to step up or down, faster or slower.
*WAIT
Wait as time controller hesitates before acting on a temperature change.
*Dconst
Derivative ratio speeds or slows boiler response compensating for overshoot and undershoot.
*Pconst is the proportional ratio
which causes the boiler to step up
or down, faster or slower (over-
shoot or undershoot) and finally
end up offset from desired tem-
perature. Default is 1/3. *Dconst is the derivative ratio
which tells the system how first to
react to differing changes in water
temperature. Default is 3/1. *Wait is the time controller waits
until it acts on a temperature
change. Default value is 5 sec-
onds.
Proportional Integral
Derivative Operator
Manual Action (PIDOMA)
B.Proportional Integral Derivative
Operator Manual Action
B P c o n s t W a i t D c o n s t
X / X X X / X
ALL BOILERS ON/OFF
Range 1 to 99. Default valve 20° F.
This Display Indicates:
The temperature above or below target at which the control will turn off or on all the boilers.
TARGET MIN/MAX AND HI LIM
Min Default 105, range 0 to 220°F Hi Lim shows the maximum obtainable water
Max Default 180, range 0 to 220°F temperature.
Hi Lim Default 200, range 0 to 220°F Hi Lim can not be lower than the target XXX/
Max.
Note: All of the values interact and are
depedent upon each other.
A l l B o i l e r s o n / o f f
X X a b o v e / X X b e l o w
T a r g e t M i n / M a x : H i L i m
X X X / X X X X X X