Vaillant ecoTEC plus VU GB 5-5 Series Installation And Maintenance Instructions Manual page 47

Heating circuit system pressure
Piping at least 1.5 inches (single unit)
Piping at least DN65 (cascade up to 360 kW)
Piping at least DN100 (cascade > 360 kW)
Expansion relief valve
System separation using a plate heat exchanger
Which type?
Number of mixers
Cylinder
–
Buffer cylinder (if yes, which type?)
–
Domestic hot water cylinder (if yes, which type?)
Pumps
–
Secondary circuit (if yes, which type?)
–
Heating circuits (if yes, which type?)
Number of diaphragm expansion vessels
–
Primary circuit
–
Secondary circuit
–
Heating circuits
Plate heat exchanger installed correctly?
System sensor installed correctly?
Heating circuits sufficiently purged?
When installing a pump without a pump assembly
Pressure loss between the pump and the unit < 2 kPa
(20 mbar) at 4 m³/h (required)
Distance between the pump and product is less than
0.5 m (required)
Pump in the return (required)
When using a third-party pump
Pump connected to BMU (signal and voltage) (required)
Pump curve at least in accordance with the instructions
(required)
Domestic hot water supply
Energy source (gas or electricity?)
Via unit circuit
Via heating circuit
Charging pump available?
If yes, which type?
At a cylinder size of < 200 l, the cylinder charging output
is limited to 30 kW (D.070)?
Flue system
Installation type (open-flued/room-sealed)
For open-flued installation: Large supply air opening
Element of the air/flue pipe up to the hearth:
–
Length
–
Diameter
Number of elbows fitted
Hearth
–
Material
–
Height
–
Diameter
Cascade
Hydr. non-return flaps in the flow line?
0020134823_07 ecoTEC plus Installation and maintenance instructions
Yes No Values
Appendix
Unit
MPa (bar)
MPa (bar)
l
l
cm²
m or mm
m or mm
47