Dhw Tank Loading Pump Or 3-Way Valve With Spring Return (Only Heating Boiler Zbr; Connecting Mains Power Supply - Bosch ZBR16-3A Series Installation And Service Instructions Manual

▶ Connect black plugs and insert grommet until stop.
Fig. 53 Cable connected (external pump)
▶ Use service function 5.E, to set connection to 01 (DHW recirculation
pump) ( page 62)
-or-
▶ Use service function 5.E to set connection to 02 (external heating
zone pump in an unmixed heating circuit) ( page 62).
-or-
▶ Use service function 5.E to set connection to 03 (external heating
pump) ( page 62).
The DHW recirculation pump is controlled by the Bosch
FW 200.
7.3.3 DHW tank loading pump or 3-way valve with spring return
(only heating boiler ZBR..-3A)
The pump used must have the following connection values: 120 VAC,
max. 2 A.
▶ Route cable from pump or 3-way valve to appliance.
▶ Insert cable into the junction box as shown in Fig. 55.
▶ Connect cable to the red plug according to Fig. 54.
Fig. 54 Attach plug (external DHW tank loading pump or 3-way valve)
[1] L (120 VAC, 60 Hz)
[2] PE (GND, Ground)
[3] N (Neutral)
[4] Red plug (in the junction box upon delivery)
Greenstar
6 720 641 933-40.1O
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6 720 641 933-37.2O
Making the electrical connections | 49
▶ Connect red plugs and insert grommet until stop.
Fig. 55 Cable connected (external DHW tank loading pump or 3-way
valve)
▶ Mount the 3-way valve for space heating operation when de-
energized, and DHW tank loading when energized.
▶ Use service function 1.F to set pump mode. ( page 59).
7.3.4

Connecting mains power supply

▶ Route the power cable (AC 120 V, 60 Hz) from the emergency shutoff
switch to the boiler.
▶ Insert cable into the junction box as shown in Fig. 57.
▶ Connect cable to the white plug according to Fig. 56.
Fig. 56 Attach plug (mains power supply)
[1] L (120 VAC, 60 Hz)
[2] PE (GND, Ground)
[3] N (Neutral)
[4] White plug (in the junction box upon delivery)
6 720 641 933-38.1O
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6 720 641 933-36.2O
6 720 806 992 (2015/03)