HAMWORTHY HEATING LTD
MILBORNE 500 SERIES
500001130/A
44
No Desc. Lower
Limit
Family Upper
Limit
Default
Value
Note Specification Pc
Screen
24 T_ch_
Low_
foot
10°C Rb Setpoint_t
_ch_low
(parameter
3)
25 Climatic
curve
regulation
T h i s i s t h e m i n i m u m
compensated setpoint in CH-
mode (at maximum outside
temperature. It limits Parameter
3 Setpoint_T_CH_High
CH_
low
25 Attenuation
_low
0°C Rb 70°C
0 Attenuation
of the
compensat
ed heating
curve after
the 2nd
circuit room
thermostat
opening
The T set-point is decreased with
the attenuation function, only if Low
Temperature Circuit room
thermostat input is open, i.e. no
demand.
0 = The system is turned off after
thermostat opening.
1...n = The set-point is decreased by
1...n
°C
CH_
low
26 CH_low_
Mod_hyst_
on
0°C
Rb
20°C
5
Burner is switched on when
T_flow_low < Setpoint_ch_low –
CH_low_mod_hyst_on
CH_
low
27 CH_low_
Mod_hyst_
off
0°C
Rb
20°C
3
Burner is switched off when
T_flow_low < Setpoint_
CH_low_mod_hyst_off
CH_
low
28 Mixing_
Valve_step
_open
_period
0 sec
Rb
255 sec
5
Time period for mixing_valve to
open from completely closed
position
CH_
low
29 Mixing_
Valve_step
_closed
_period
0 sec
Rb
255 sec
7
Time period for mixing_valve to
close from completely open
position
CH_
low
30 Mixing_
Valve_
interval
period
0 sec
Rb
255 sec
5
Time period that mixing_valve
remains static after moving
CH_
low
31 Mixing_
Valve_
hysteresys
0 sec
Rb
30°C
2
CH_
low
32 Mixing_
Max_
Still_
hys
0 sec
Rb
30°C
2
CH_
low
33 Power_
Control_
mode
0 G
1
1
0
=
min
num of
burners,
cascade
1 = max
num of
burners,
unison
Selected mode for sequencing
power demand power over
individual burners in cascade or
unison style
Power
Dist.
34 3rd_Pump 0
G
1
0 0
=
primary
1 = low
temp
Priority setting for pump 3.
0 setting when used as primary
pump
1 setting when used as low temp
Heating circuit pump
CH_
high