23
Equipment required
Pos.
Designation
1
Heat pump I
2
Heat pump control unit with LON communication module (accessory)
9
Heat pump II
qT
Primary pump, heat pump I (fail-safe)
Note
For two-stage Vitocal 300-G Pro, a primary pump can be used for each of the first and second
stages. Observe minimum flow rate.
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 two-stage Vitocal 300-G Pro, a primary pump can be used for each of the first and second
stages.
wZ
Well pump (suction pump for groundwater, fail-safe; connect via on-site contactor with fuse protec-
tion)
wU
Delivery well
wI
Return well
Note
If 2 primary pumps are used, at least 75 % of the nomi-
nal flow rate must be produced during partial load.
Preparing for installation
Water/water cascade, 1-stage/2-stage
(cont.)
5549 984 GB
Installation
Summary of Contents for KWT BW 301.B090
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