Application 2 - Bosch Heatronic 4000 Applications Manual

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Installation & operating instructions manual (60 pages)

Table Of Contents

Table of Contents

1 2 | Bosch Heatronic 4000 Controls

3.4 Application 2

Description:

Single temperature system with two modulating condensing boilers

operated to provide heat for space heating and indirect DHW

loads. The boiler target temperature for the space heating load is

determined from outdoor temperature reset. Piping schematic is

reverse / return with bypass.

Essential Source (#) Settings:

ENABLE (1) = AUTO

BOSC BOILER (1) = YES

BOSC MODL (1) = "SB-Series"

ENABLE (2) = AUTO

Essential System Settings:

APP MODE = RSET

PUMP 1 = AUTO

PUMP 2 = OFF

IDHW MODE = ON

Application 2 Piping:

LEGEND:

S1 = Outdoor Sensor

S2 = Primary Supply Sensor

S3 = Primary Return Sensor

S4 = DHW Sensor

SB Series

DISCLAIMER: Application drawings in this manual are conceptual only and do not purport to address all design, installation, code, or safety considerations. The diagrams in this manual are for reference use by code officials, designers and

licensed installers. It is expected that installers have adequate knowledge of national and local codes, as well as accepted industry practices, and are trained on equipment, procedures, and applications involved. Drawings are not to scale.

Refer to the boiler, control and module installer manuals for additional detailed information!

Data subject to change

BOSC BOILER (2) = YES

BOSC MODL (2) = "SB-Series"

ENABLE (3) = OFF

ENABLE (4) = OFF

IDHW LOCATION = PRIM

IDHW SENSOR = ON

IDHW PRIM PUMP = OFF

S5 =

Boiler Inlet Sensor

S6, S7 = Boiler Outlet Sensors