Hydraulic Connections - Viessmann VITOCAL 200-S AWS Technical Manual

Design information

4.3 Hydraulic connections

A B C D
Symbol
A
B
C
4
D
+
E
F
G
■ Route hydraulic lines with at least DN 25 in the secondary circuit.
■ Subject to the heating system version, safeguard the minimum flow
rate by implementing the following measures:
– Install the overflow valve at the place in the heating circuit that is
the furthest removed from the heat pump.
– Install a heating water buffer cylinder to separate the heating cir-
cuits.
– Install a low loss header.
– Install direct heating circuits without thermostatic valves (system
user permission required).
■ If the appliance is used for cooling, the heating water flow and heat-
ing water return must be thermally insulated with vapour diffusion-
proof material.
VIESMANN
46
(cont.)
G
F
E
Explanation
Hot gas line
Liquid gas line
DHW cylinder flow (heating water side)
Heating water return and DHW cylinder return
Heating water flow
Safety valve
Drain & fill valve
Connection
– 4 kW: 7 12 mm
– 7 kW: 7 16 mm
–10 kW: 7 16 mm
–13 kW: 7 16 mm
– 4 kW: 7 6 mm
– 7 kW: 7 10 mm
–10 kW: 7 10 mm
–13 kW: 7 10 mm
VITOCAL 200-S
G 1¼
G 1¼
G 1¼
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