18
CTC EcoPart 400
General information
5.1 Connection of the heat medium side
Primary and return lines of at least Ø22 mm copper pipe are to be connected
to the heat pump for CTC EcoPart 406-412, for CTC EcoPart 414-417, at
least Ø28 mm must be used. Route the pipes so that no other highest point is
present where air can collect and obstruct circulation. If however this cannot be
done, provide this highest point with an automatic bleeder.
5.1.1 Charge pump
The choice of charge pump depends on the type of system. To ensure proper
operation the flow in the heat medium circuit should not be less than the value in
the table under Technical data. Ensure that the circulation pump is large enough,
so that there is sufficient flow through the heat pump. If the flow is too low, there
is a risk the high pressure switch will trigger.
The charge pump can either be connected to the CTC EcoPart 400 (provided it
is installed internally) or connected to the product which is used to control it. For
internal installation one of the following is normally selected:
CTC EcoPart 406 - 408 Stratos Tec 25/6
Item no.: 58 50 32 301
CTC EcoPart 410 - 412 Stratos Tec 25/7
Item no.: 58 50 33 301
CTC EcoPart 414 - 417 Grundfos UPM GEO 25-85 Item no.: 58 59 99 301
5.1.2 Control/power supply
CTC EcoLogic Pro
Up to 10 heat pumps can be connected to a CTC EcoLogic Pro. In such a
case, the charge pumps in heat pumps 1 and 2 can be connected to the CTC
EcoLogic Pro. A charge pump for heat pumps 3-10 must be installed and
connected to the CTC EcoPart 400.
CTC EcoLogic v3
The charge pump (not speed-controlled) must be connected to the
CTC Ecologic v3.
CTC EcoZenith v3
Use a 0-10 V pump from CTC or a non speed-controlled pump connected to
the CTC EcoZenith.
CTC EcoEl v3
The charge pump (not speed-controlled) must be connected to the
CTC EcoEl v3.
Stand alone operation
The charge pump is connected to the CTC EcoPart 400 and controlled using
the CTC Basic Display
5.1.3 Pump curve
Grundfos UPM GEO 25-85
(CTC EcoPart 414-417 2xLEP only)
English (
GB)
4
3. Applications
UPM2
This circulator pump is designed to be integrated in boilers and
other heating appliances with remote control of the speed,
corresponding to low-voltage PWM signal input.
UPM GEO
This circulator pump is particularly suitable for cold-water
applications.
The pump is designed to be integrated in geothermal heat pumps
as well as in heating and air-conditioning systems with remote
control of the speed, corresponding to low-voltage PWM signal
input.
UPM2K
This circulator pump is particularly suitable for cold-water
applications with lower performance requirements than for the
UPM GEO.
The pump is designed to be integrated in geothermal heat pumps
as well as in heating and air-conditioning systems with remote
control of the speed, corresponding to low-voltage PWM signal
input.
Speed control can reduce the power consumption considerably.
In addition, speed control is required to control the performance
of a system.
3.1 Pumped liquids
• Thin, clean, non-aggressive and non-explosive liquids, not
containing solid particles, fibres or mineral oil.
• In heating systems, the water should meet the requirements of
accepted standards on water quality in heating systems, for
example the German standard VDI 2035.
• In domestic hot-water systems, the pump should be used only
for water with a degree of hardness lower than approx. 14 °dH.
•
UPM GEO and UPM2K:
Mixtures of water with antifreeze
media such as glycol or ethanol down to -10 °C.
3.1.1 Glycol or other antifreeze media
UPM GEO and UPM2K pumps can be used in circuits filled with
antifreeze media containing for example glycol. Depending on the
type of glycol, mixture and liquid temperature, the viscosity will
increase, compared to water as medium. The viscosity increase
will affect the pressure loss in the system as well as the
efficiency, performance and load of the pump. This may result in
a lower maximum curve due to the pump being controlled by a
power-limiting function which protects against overload.
Example
If the water/propylene-glycol mixture is 50 %, and the liquid
temperature is +2 °C, the viscosity will be 15 cSt. Compared to
100 % water at 60 °C (at the same flow), the maximum head will
decrease by 1.0 to 1.5 metres.
4. Operating conditions
4.1 Liquid temperature
UPM2: +2 °C to +95 °C.
UPM GEO and UPM2K: -10 °C to +95 °C.
To avoid condensation in the control box and stator, the liquid
temperature must always be higher than the ambient
temperature.
4.2 System pressure
Maximum 1.0 MPa (10 bar).
4.3 Inlet pressure
The following minimum pressure must be available at the pump
inlet during operation:
5. Performance curves
Fig. 2
UPM2 and UPM GEO performance range
Fig. 3
UPM2K performance range
Warning
Do not use the pump for flammable liquids, such
as diesel oil and petrol.
Liquid temperature
95 °C
Inlet pressure
0.05 MPa (0.5 bar)
TM
05
20
45
43
11
TM
05
20
45
43
11
0.0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
4.0
4.4
Q [m³/h]
0
1
2
3
4
5
6
7
8
9
[m]
H
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
[ft]
H
0
2
4
6
8
10
12
14
16
18
Q [US GPM]
UPM2 / UPM Geo
UPM Geo 25-85
XX-75
XX-70
XX-60
XX-50
XX-40
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
Q [m³/h]
0
1
2
3
4
5
6
7
8
[m]
H
0
2
4
6
8
10
12
14
16
18
20
22
24
26
[ft]
H
0
1
2
3
4
5
6
7
8
9
10
11
Q [US GPM]
UPM2K
25-40 180
25-50 180
25-60 180
25-70 180
