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HRS Hevac Ltd AquaModule AMB
Installation, Operating & Instruction Manual
7.6
Safety Function
This function activates the four pumps' power relays at the same time without considering
ipsothermic contacts' inputs.
NOTE:
This function can be enabled from base access level.
Parameter
Factory Setting
Optional Setting
SAFETY_Speed
75%
Not used
SAFETY FCT
Off
Off/On
In case of high temperature alarm on S1, the primary pumps are stopped, even if the
function is activated.
7.7
Eco-Booster Function
One or both functions can be activated at the same time.
x
ECO
: When control valve is sufficiently closed (Valve Hysteresis) during a sufficient long time
(ECO delay), primary pump switches off and primary mixing valve close down.
The system is switch ON when S1 temperature has gone down more than the set value of
”Eco Hysteresis”.
If secondary pumps are connected (SS
DS
PRGHOV
) they are still in operation during the Eco
function.
x
Booster
: If DHW temperature is dropping down faster than "Booster Gradient", the second
primary pump (if existing) is energized, to increase the primary flow rate. Function stops when
DHW temperature is back to the setpoint value and after "Booster Delay" parameter.
Parameter
Factory
Setting
Optional setting
Description
0:-
1:E
2:B
3:E+B
0
0/1/2/3
0 = No function
1 = Eco Function only
2 = Booster function only
3 = Accumulated two functions
Fct_Selection
Normal
Normal/Eco/Boost/
EcoBoost
Playback function selected in
1:Eco 2:Booster 3:ECoBoost
Eco Delay
5 min
1-30 min
Scan time before activating function
if possible
Eco Hysteresis
5°C
1-20°C
Temperature range in which the
function is applicable
Valve
Hysteresis.
10%
0-80%
Maximum opening of the valve
before switching function
Booster Delay
2 sec
2-200 sec
Time delay between the Booster
functions stops and the second pump
stops
Booster
Gradient
2°K/s
1 to 20°K/sec
Minimum temperature fall speed at
which the function operates