HAMWORTHY HEATING LTD
MILBORNE 500 SERIES
500001130/A
43
No Desc. Lower
Limit
Family Upper
Limit
Default
Value
Note Specification Pc
Screen
15 P_ch_
max
1
Rh
255
230
Setting the max fan speed for
CH-Mode
CH_
high
16 CH_
pririty
0
Rh
2
0
0 = Shared priority
1 = High temperature circuit
priority.
2 = Low temperature circuit
priority
CH_
high
17 T_ch-high_
limit
10°C Rh T_CH_
High_Max
-10°C
(parameter
44)
80 Limitation
on the
setting for
Setpoint_T
_ch_high
Upper limit for high temperature
circuit set-point as set in
parameter 1. Also see parameter
44 T_CH_High_max
CH_
high
18 T_ch-high_
foot
10°C Rh Setpoint
T_CH_
High
(parameter
1)
50 Climatic
curve
regulation
This is the minimum
compensated set-point in CH-
mode (at maximum outside
temperature). It limits Parameter
1 Setpoint_T_CH_High
CH_
high
19 CH_high
_mod_
Hyst_on
0°C
Rh
20°C
7
Burner is switched on when
T_flow_high <
Setpoint_CH_High –
CH_high_mod_hyst_on.
Ex.: 80°C-7°C = 73°C
CH_
high
20 CH_high
_mod_
Hyst_off
0°C
Rh
20°C
3
Burner is switched off when
T_flow_high >
Setpoint_C
CH_high_mod_hyst_off
Ex.: 80°C+1°C = 81°C
CH_
high
21 Attenuation
_high
0°C Rh 70°C
0
Attenuation
of the
compensat
ed heating
curve after
the 1
st
circuit
room
thermostat
opening
The T set-point is decreased with
the attenuation function, only if High
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_
high
22 CH_type
_low
0
Rb
3
1
0 = Fixed flow temperature
1 = Compensated flow
temperature.
2 = BMS 0-10V load based.
3 = BMS 0-10V temperature
based
CH_
low
23 T_ch_low_
limit
10°C Rb T_CH_
High_Max
-10°C
(parameter
53)
50 Limitation
on the
setting for
Setpoint_T
_ch_low
Upper limit for low temperature
circuit set-point as set in
parameter 3. Also see parameter
53 T_CH_low_max
CH_
low