Bosch ZWB35-3A Series - Information About the Appliance

Information about the appliance | 7
6 720 806 992 (2015/03)Greenstar
3 Information about the appliance
ZBR appliances are residential boilers for central heating and loading of
an indirect fired DHW tank.
ZWB appliances are residential combi boilers for central heating and on
demand DHW heating.
The appliances comply with South Coast Air Quality Management
District (SCAQMD) 2012 requirements: (Type-1) 14 Ng/J NO
x
(and/or
20 ppm at 3% O
2
).
3.1 Proper use
The Greenstar boiler is not for use in CSD-1 commercial installation.
The appliance may only be installed in closed loop hot water central
heating systems.
Any other purpose is considered improper use. Any resulting damage is
excluded from the manufacturer's warranty.
The commercial and industrial use of the appliance for generating
process heat is not permitted.
3.2 Overview of boiler types
Table 2 describes the meaning of the model number:
Z Central heating appliance
W DHW heating
B Condensing technology
R Constant temperature control
16 Output up to 54,600 BTU/hr (16 kW)
21 Output and DHW output up to 71,600 BTU/hr (21 kW)
28 Output and DHW output up to 95,500 BTU/hr (28 kW)
35 Output and DHW output up to 119,400 BTU/hr (35 kW)
42 Output and DHW output up to 143,300 BTU/hr (42 kW)
-3 Version
A Fan-supported appliance
23 Natural gas (NG)
3.3 Rating plate
The rating plate is located at the right side of the appliance.
Fig. 3 Position of the rating plate
The rating plate contains the appliance output, model number, approval
data and serial number.
3.4 Appliance description
• Appliance for wall installation, regardless of chimney and room size
• Outdoor reset control FW 200
• Intelligent boiler pump control
• Heatronic boiler control with 2-wire BUS
• Three-speed boiler circulator
• Automatic air vent (combi boiler ZWB..-3A only)
• Display
• Automatic ignition
• Continuously-controlled output
• Full protection via the Heatronic with flame rod and solenoid valves
• No minimum circulating water flow rate required
• Suitable for radiant floor heating
• Flue adapter for flue gas and combustion air with test ports
• Variable speed fan
• Gas premix burner
• Temperature sensor and temperature control for space heating
• Supply temperature sensor
• Temperature limiter
• Safety relief valve, pressure gauge
• Expansion vessel (combi boiler ZWB..-3A only)
• Connection possibility for DHW tank temperature sensor (NTC)
(heating boiler ZBR..-3A only)
• Flue gas temperature limiter
• DHW priority (combi boiler ZWB..-3A only)
• Motorized 3-way valve (combi boiler ZWB..-3A only)
• Hydraulics connection plate
ZBR16-3 A 23
ZBR21-3 A 23
ZBR28-3 A 23
ZBR35-3 A 23
ZBR42-3 A 23
ZWB28-3 A 23
ZWB35-3 A 23
ZWB42-3 A 23
Table 2 Appliance types
6 720 641 933-84.2O