Dhw Heating Via An External Heat Exchanger; 2-Way Motorised Ball Valve (Dn 32); Cylinder Primary Pump; Design Information - Viessmann VITOCAL 300-G Technical Manual

Installation accessories

2.4 DHW heating via an external heat exchanger

2-way motorised ball valve (DN 32)

Part no. 7180 573
■ With electric drive (230 V~)
■ Connection R 1¼"

Cylinder primary pump

For DHW heating via a plate heat exchanger (on-site).
■ Grundfos UPS 25-60 B
Part no. 7820 403
■ Grundfos UPS 32-80 B
Part no. 7820 404
Curves
6.0
3
3
5.0
2
4.0
3.0
1
2.0
1.0
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Pump rate in m³/h
Type UPS 25-60 B, 230 V~

Design information

3.1 Power supply and tariffs
According to current Federal tariffs [Germany], the electrical demand
for heat pumps is considered domestic usage. Where heat pumps are
used to heat buildings, the local power supply company must first give
permission [check with your local power supply company].
Check the connection conditions specified by your local power supply
utility for the stated equipment details. It is crucial to establish whether
a mono-mode and/or mono-energetic heat pump operation is feasible
in the supply area.

Application procedure

The following details are required to assess the effect of the heat pump
operation on the grid of your local power supply utility:
■ User address
■ Location where the heat pump is to be used
■ Type of demand in accordance with general tariffs
(domestic, agricultural, commercial, professional and other use)

3.2 Positioning requirements

■ The installation room must be dry and safe from the risk of frost.
■ Never install the appliance in living spaces or directly next to, below
or above quiet rooms/bedrooms.
■ Maintain the minimum clearances and minimum room volume (see
the following chapter).
VIESMANN
22
(cont.)
UPS 25-60B
9
8
7
6
5
4
3
2
1
0
0 1 2 3 4 5 6
Pump rate in m³/h
Type UPS 32-80 B, 230 V~
It is also important to obtain information about standing charges and
energy tariffs, about the options for utilising off-peak electricity during
the night and about any power-off periods.
Address any questions relating to these issues to your customer's local
power supply utility.
■ Intended heat pump operating mode
■ Heat pump manufacturer
■ Type of heat pump
■ Connected load in kW (from rated voltage and rated current)
■ Max. starting current in A
■ Max. heat load of the building in kW
■ Sound insulation measures:
– Heat pump installation on anti-vibration platforms or plinths (see
next chapter).
– Reduction of reverberative surfaces, particularly on walls and ceil-
ings. Rough structural renders absorb more sound than tiles.
– If quietness is a particularly important consideration, apply sound-
absorbing material to the walls and ceilings (commercially availa-
ble).
■ Hydraulic connections:
UPS 32-80 B
7 8 9 10 11
VITOCAL 300-G