EN - 45
AQUACIAT
POWER
2) Water flow control based on constant water delta pressure
(the control continuously acts on the pump speed to ensure
a constant delta pressure).
3) Water flow control based on constant delta T on the water
exchanger.
Fixed speed pumps can be either low or high pressure, whereas
variable speed pumps are always high pressure pumps.
8.4.2 Configuring pumps
The CONNECT TOUCH can control fixed speed and variable
speed pumps as well as customer pumps. Note that variable
speed pumps can be configured as fixed speed pumps.
Basic pump configuration can be performed via the Configuration
menu (PUMPCONF – Pump Configuration). Remember that
only logged-in users may access the menu. The unit must be
stopped.
IMPORTANT: Please note that the speed of the pump can
be configured only by service technicians.
To set pumps sequence
1. Navigate to the Configuration menu (logged-in users only).
2. Select
Pump Configuration
(PUMPCONF).
3. Set Pumps Sequence [pump_seq].
Pumps Sequence [pump_seq]
0
No pump
1
One pump only
2
Two pumps auto
3
Pump#1 Manual
4
Pump#2 Manual
8.4.3 Setting pumps automatically
If there are two pumps in the system controlled by the CONNECT
TOUCH control, then the "pump reversing" functionality can be
used. When the pump reversing option is selected, then the
control balances the pump run time to match the configured
pump changeover delay. In case the delay has elapsed, the
pump reversing function is activated.
To set pumps automatic rotation delay
1. Navigate to the Configuration menu (logged-in users only).
2. Select
Pump Configuration
(PUMPCONF).
3. Set Pump Auto Rotation Delay [pump_del].
Pump Auto Rotation Delay [pump_del]
24 to 3000h
48h
8.4.4 Setting customer pumps
Units with customer pumps are fitted with the flow switch,
allowing for the water flow control.
Customer pumps have the following configurations possible:
Pump(s) available
[pump_seq]
Description
No pump
0
No pump
One single speed pump
1
One pump only
Two single speed pumps
2
Two pumps automatic
3
Pump #1 manual
4
Pump #2 manual
8.4.5 Setting pump protections
To mitigate the risk of freezing the water exchanger when the
outside air temperature is low, the CONNECT TOUCH control
provides a means to automatically start the pump each day at
14:00 for 2 seconds when the unit is "Off" (especially useful
when the unit is stopped for a long time, e.g. during the winter
season).
For units fitted with two pumps, the first pump is started
on even days and the second pump is started on odd days.
Starting the pump periodically for a few seconds extends the
lifetime of the pump bearings and the tightness of the pump
seal. This periodical pump quick start can be selected via the
Configuration menu.
To set periodical pump quick start
1. Navigate to the Configuration menu (logged-in users only).
2. Select
Pump Configuration
(PUMPCONF).
3. Set Pump Sticking Protection [pump_per].
Pump Sticking Protection [pump_per]
No/Yes
Yes
8.4.6 Setting ECO pump mode
When the unit is in Standby mode (heating or cooling demand
is satisfied), the CONNECT TOUCH control may be configured
to stop the pump periodically in order to save energy.
This option can be configured only by service technicians.
To verify the Eco Pump configuration
1. Navigate to the Main menu.
2. Select
Miscellaneous Status
(MSC_STAT).
3. Verify Eco Pump Mode Active [m_ecopmp].
Eco Pump Mode Active [m_ecopmp]
No/Yes
8.5
Hydronic kit option
The hydronic kit option allows for continuous monitoring of the
water flow rate.
The hydronic kit provides the option to measure the following
parameters:
Inlet and Outlet water pressure.
Water exchanger flow rate.
How is the water flow rate measured?
The water flow rate measurement is based on the calculation
that takes into account the pressure difference between the
Inlet water pressure and the Outlet water pressure as well as
the pressure drop curves.
Hydronic kit variable speed pumps
In the case of units fitted with variable speed pumps,
the CONNECT TOUCH control adjusts the pump speed
automatically in order to make sure that the water flow rate is
maintained at the correct level.
Depending on the selected configuration, the water flow control
can be based on compressor usage, constant delta pressure or
constant temperature difference.
8 - STANDARD CONTROL OPERATIONS AND OPTIONS
