Dhw Tank Loading Pump Or 3-Way Valve; Zbr; Connecting Mains Power Supply - Bosch ZBR16-3A Installation And Service Instructions Manual

56 | Making the electrical connections
6.3.3 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.
B Route cable from pump or 3-way valve to appliance.
B Insert cable into the junction box as shown in Fig. 48.
B Connect cable to the red plug according to Fig. 47.
Fig. 47 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)
B Connect red plugs and insert grommet until stop.
Fig. 48 Cable connected (external DHW tank loading pump
or 3-way valve)
B Mount the 3-way valve for space heating operation
when de-energized, and DHW tank loading when
energized.
B Use service function 1.F to set pump mode.
( page 67).
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6.3.4

Connecting mains power supply

B Route the power cable (AC 120 V, 60 Hz) from the
emergency shutoff switch to the boiler.
B Insert cable into the junction box as shown in Fig. 50.
B Connect cable to the white plug according to Fig. 49.
Fig. 49 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)
B Connect white plugs and insert grommet until stop.
Fig. 50 Cable connected (mains power supply)
B Mount junction box on the rail.
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