32
Equipment required
Pos.
Designation
1
Heat pump I
2
Heat pump control unit with LON communication module (accessories)
9
Heat pump II
qT
Primary pump, heat pump I (fail-safe)
Note
For 2-stage Vitocal 300-G Pro, a primary pump can be used for stages 1
and 2 respectively.
qO
Frost stat, primary circuit (accessories)
wP
Brine safety assembly
wQ
Pressure switch, primary circuit
wW
Separating heat exchanger, primary circuit
wE
Flow switch, well circuit (remove jumper when connecting)
wR
Dirt trap
wT
Primary pump, heat pump II (fail-safe)
Note
For 2-stage Vitocal 300-G Pro, a primary pump can be used for stages 1
and 2 respectively.
wZ
Well pump (suction pump for groundwater, fail-safe; connect via on-site
contactor with fuse protection)
wU
Delivery well
wI
Return well
Electrical installation scheme
For a summary of electrical connections,
see from page 50 and separate "con-
nection and wiring diagram".
Type WW 1125 to WW 2300
Hydraulic installation scheme
"Vitocal 300-W Pro installation
and service instructions, supple-
ments".
Preparing for installation
Primary circuit: water/water, cascade
(cont.)
5772 458 GB
