30
Required equipment
Pos.
Designation
1
Heat pump
2
Heat pump control unit
qT
(First) primary pump (fail-safe)
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)
wT
Optional: Second primary pump (fail-safe) for stage 2
Note
■ Contactor relay required.
■ Size first primary pump
qT
for partial load.
wR
Dirt trap
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, 1-stage/2-stage
(cont.)
5772 458 GB