Honeywell EN2H-0221GE51 R0808 Heating System User Manual


 
SDC / DHC Hydraulic Components
EN2H-0221GE51 R0808 139
7.1.14 Modulation of start power
The start power parameter determines a percentage setting for
part of the modulation runtime during the start-up phase. With a
setting of 0% the actuator valve remains always closed. As soon
as the set start time has expired, the modulation switches to its
normal control characteristics defined by the modulation
parameters.
100%
42 s 60s 90s
t (s)
70%
t (s)
x
a
b
c
d
g
f
e
a Modulation e Base load
b Upward/downward modulation
depending on the control deviation
f On
c Adjustment operation g Start
d Start-up phase x Starting load (%)