Primary Pump - Viessmann VITOCAL 300-G Technical Manual

Installation accessories
E
F
2
H
K
L
A Primary circuit flow (heat pump brine inlet)
B Ball valve
C Drain & fill valve
D Pressure switch connection
E Air separator
F Primary circuit flow (brine inlet, brine accessory pack)
Assembly and installation information
■ Fit the brine accessory pack horizontally to ensure the correct func-
tion of the air separator.
■ Fit the air blow-off connector above the brine accessory pack.
■ Check the circulation pump for an adequate residual head (see
curves).
Position the pump cable entry so that it points downwards or to the
l.h. or r.h. side, or turn the pump head if required.
■ If the brine circuit pressure switch is not connected, the brine acces-
sory pack can also be installed in the external interconnecting duct
(waterproof).

Primary pump

For installation in the primary circuit return (brine return)
Components:
■ Circulation pump 400 V~
■ Thermal insulation (vapour diffusion-proof)
■ Contactor relay
Heat pump type BW 121
Circulation pump part no.
Wilo standard cir-
culation pump,
type TOP S 30/7,
400 V~
Wilo standard cir-
culation pump,
type TOP S 30/10,
400 V~
VIESMANN
12
(cont.)
670
D
C B N
360
G B
M
C
BW 129 BW 145
Z007 441 — on-site
— Z007 442
86
A
B
G Pressure gauge
H Safety valve (3 bar)
K Primary circuit return (brine outlet, brine accessory pack)
L Expansion vessel connection
M Primary circuit return (heat pump brine outlet)
N Primary pump
Note
For operation with water/Tyfocor, the pump output supplements
should be taken into account (see page 43).
VITOCAL 300-G