75
Cylinder drain & fill valve positions
A
B
C
A
Cylinder drain & fill valve closed
B
Cylinder drain & fill valve open to
drain the internal DHW line
C
Cylinder drain & fill valve open to
drain or fill the cylinder
Draining the heat pump on the secondary side
1.
Close the on-site drain & fill valve.
2.
Drain heat pump at secondary flow
drain valve (see page 73).
Checking sensors
For sensor connections to the controller
and sensor PCB, see page 41.
For the position of the sensors in the heat
pump, see figure on page 73.
Troubleshooting
Repairs
(cont.)
5601 574 GB
Service
Summary of Contents for BWT 221.A06
Page 20: ...20 aCH 10 9 Installation sequence Siting the heat pump cont 5601 574 GB ...
Page 22: ...22 4x 18 21 4x 6x 20 2x 19 Installation sequence Siting the heat pump cont 5601 574 GB ...
Page 23: ...23 25 2x 24 4x 22 23 Installation sequence Siting the heat pump cont 5601 574 GB Installation ...
Page 28: ...28 4 1 3 2 Installation sequence Siting the heat pump cont 5601 574 GB ...
Page 71: ...71 Opening programming unit 2 2x 1 3 Troubleshooting Repairs cont 5601 574 GB Service ...
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