21
Type WW 301.B125 to WW 302.B300
Hydraulic installation scheme
2
1
--211.1--
--230V--
--LP1 X3.8;3.9--
--F2--
--F3--
--KM BUS--
qT
--2/211.1--
--224.2--
--LP1 X3.3;3.4--
wP
P
wQ
P--2/LP1 X3.8;3.9--
wI
wU
wZ
wR
wW
wE
qO
--2/LP1 X3.8;3.9--
--2/LP1 X3.3;3.4--
--2/211.1--
----------
Fig.16
Required equipment
Pos.
Designation
1
Heat pump
2
Heat pump control unit
qT
(1st) 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)
wR
Dirt trap
wT
Optional: Primary pump 2 (fail-safe) for stage 2. Observe minimum flow rate.
Note
■
Contactor relay required.
■
Size primary pump 1
qT
for partial load.
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
Primary circuit: water/water, 1-stage/2-stage
5549 984 GB
Installation
Summary of Contents for KWT BW 301.B090
Page 99: ...99 5549 984 GB...
