Bosch PROTANKLESS GWH 345/450 ESR - Manual (Page 8)

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Appliance details
2.6 Applications
Introduction
The application designs provided in this manual are general guides to be used when installing this recirculating water
heater.
Pump Sizing
Required PS pumps are Taco 007 Bronze or Grundfos 15-42B. PZ pumps should be sized by a professional plumb-
ing contractor based on the specific application.
Instantaneous water heater (direct tank load design)
Fig. 6
Fig. 7 Service position to access water and electric
connections
Caution: the water heater which will be
used to supply potable water shall not
be connected to any heating system or
component(s) previously used with a
nonpotable water heating appliance.
Caution: Do not overpump the heater.
Maximum 5 gpm water flow permitted
through the heater.
Note: maximum amp draw:
1,5A. Do not connect
additional pump to the
appliance but use a relay panel
if powering multiple pumps.
Front cover
Control panel
Low voltage
access cover