Important Points To Check; Table Of Factory Settings; Technical Information; Table Of Selected Output In Display 5.2 - IVT GreenlineC Manual To Installation, Commissioning And Maintenance

Important points to check

During the first period after commissioning you should pay special attention to the pressure levels in
the heating system and heat transfer circuit. It might need filling up.
The factory setting of the motor cutout is based on a value under the hot water pressure and stable
voltage. Because of the various voltages in the electric network the recommended settings are not
always suitable and can therefore need adjusting from time to time. This is best achieved using a clip-
on ammeter during hot water operation.
For the heat pump to perform at its best, it is important to check the flow on the hot and cold side of
the heat pump. Usually, the heat transfer fluid pumps each have a speed selector switch. These must be
set correctly for the pressure drop in the systems. A recommended temperature difference over the heat
pump on the cold side is between 2-3°C and on the hot side between 7-10°C. The nominal flows
specified in Technical Specifications give a difference of 3°C to 7°C at operating mode 0/45°C. You
can check this with the help of the sensor temperatures in line three of the control panel.
It is also important that the flow in the radiator system exceeds the flow across the heat pump. If this is
not the case, the heat pump flow goes back via the bypass to the heat pump return, which may case the
heat pump to trip for high return temperature. The flow through the radiator system must be high
enough to ensure that the entiresurface of the radiators is kept hot. This maximises the heat-radiating
surface and so keeps down the flow temperature from the heat pump.
After testing, vent the system again and top up with cold water if necessary.

Table of factory settings

The table shows the factory settings of all the settings that can be changed by the installer.
Position Setting
P1.1 Temp incr/decr
P1.2 Temp fine-tune
P1.3 Heat curve adjust
P1.4 Heat curve hysteresis.
P1.5 Mix. valve incr/decr
P1.6 Mix. valve fine-tune
P1.7 Mix. valve curve adjusting
P1.8 Mix. valve curve neutral zone
P1.9 Mixing curve max temp.
P1.10 Room temperature
P1.11 Room sensor influence
P1.12 Holiday function
P1.13 Remote control heating
P1.14 Summer disconnection
P1.16 Return thermostat setting
P1.17 Return thermostat hysteresis
P2.1 Additional hot water
P2.2 Interval for DHW peak

Technical information

Table of selected output in display 5.2

The table shows the output available for various selections in display P5.2. If e.g. have chosen 2/3 the
output is in two steps. The first step is 3.0kW and the second is 6.0kW.
Model
C4/E5-C11/E11
Factory
setting
4
0°
0°
5°
4
0°
0°
3°
60°
20°
5
0 days
not active
18°
48°
5°
0 hours
not active
Max output at 1/3
3.0 kW
Position Setting
P2.3 Setting of DHW temp.
P2.4 Setting of DHW hysteresis
P4.1 Clock setting HP
P4.1.1 Setting level HP
P4.2 Clock sett. add. heat
P4.3 Clock setting DHW
P5.1 Select operating case
P5.2 Conn. cap. electric add. heat.
P5.4 Only add. heat
P5.5 add. heat yes/no 5.5
P5.7 External controls
P5.10 Operating option, P2
P5.11 Operating option, P3
P8.1 Add. heat timer
P8.3.1 Time delay SV1
P8.3.2 Time delay for stop boiler
P8.3.6 Delay time interval SV1
Max output at 2/3
6.0kW
62
Factory
setting
45°
5°
not active
0°
not active
not active
A
2/3
Off
yes
0
On
Off
60 minutes
30 minutes
60 minutes
1 minute
Max output at 3/3
9.0 kW