2 | Contents
Copyright (optional information)6 720 643 068 (2011/06)
Contents
1 Guideline to symbols and safety instructions . . . . 4
1.1 Guideline to symbols . . . . . . . . . . . . . . . . . 4
1.2 Safety instructions . . . . . . . . . . . . . . . . . . . 4
2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 ZBR - Boiler for space heating and
loading of indirect fired DHW tanks . . . . . .6
2.2 ZWB - Combi boiler for space heating and
DHW generation . . . . . . . . . . . . . . . . . . . . .7
3 Information about the appliance . . . . . . . . . . . . . . 8
3.1 Proper use . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Overview of boiler types . . . . . . . . . . . . . . 8
3.3 Rating plate . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Appliance description . . . . . . . . . . . . . . . . 9
3.5 Accessories . . . . . . . . . . . . . . . . . . . . . . . 10
3.6 Product dimensions and minimum
clearances . . . . . . . . . . . . . . . . . . . . . . . . .11
3.7 Appliance layout heating boiler ZBR..-3A . 12
3.8 Appliance layout combi boiler ZWB..-3A . 14
3.9 Electrical wiring heating boiler ZBR..-3A . 16
3.10 Electrical wiring combi boiler ZWB..-3A . 18
3.11 Technical data heating boiler ZBR16-3A... 20
3.12 Technical data heating boiler ZBR28-3A... 22
3.13 Technical data heating boiler ZBR35-3A... 24
3.14 Technical data heating boiler ZBR42-3A... 26
3.15 Technical data combi boiler ZWB28-3A... 28
3.16 Technical data combi boiler ZWB42-3A... 30
3.17 Condensate composition . . . . . . . . . . . . . 32
4 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.1 Compliance with standards and
regulations . . . . . . . . . . . . . . . . . . . . . . . .33
4.2 Operating limits of the boiler . . . . . . . . . 33
4.3 Additional regulations for installation in
Massachusetts . . . . . . . . . . . . . . . . . . . . .34
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.1 Notes on installation and operation . . . . 35
5.1.1 Notes on installation and operation . . . . 35
5.1.2 Other important information . . . . . . . . . . 36
5.2 Comparing the size of the integrated
expansion vessel . . . . . . . . . . . . . . . . . . . 37
5.3 ZBR..-3A appliances (heating boilers):
Selecting an expansion vessel . . . . . . . . . 38
5.4 Selecting the installation location . . . . . . 38
5.5 Pre-installing pipes . . . . . . . . . . . . . . . . . 39
5.6 Mounting the appliance . . . . . . . . . . . . . 41
5.7 Installing a low water cut off (LWCO) . . 42
5.8 Connecting flue gas accessories . . . . . . . 43
5.8.1 Installation of the exhaust and air
intake system . . . . . . . . . . . . . . . . . . . . . . 44
5.8.2 Approved examples of horizontal and
vertical venting installation . . . . . . . . . . . 47
5.8.3 Vent and combustion air pipe lengths . . 50
5.9 Testing gas and water connections
for leaks . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6 Making the electrical connections . . . . . . . . . . . 52
6.1 General notes . . . . . . . . . . . . . . . . . . . . . 52
6.2 Low voltage electrical connections in the
Heatronic boiler control . . . . . . . . . . . . . . 52
6.2.1 Open the Heatronic boiler control . . . . . 52
6.2.2 Connecting the outdoor temperature
sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6.2.3 Connecting the DHW tank temperature
sensor (only heating boiler ZBR..-3A) . . . 53
6.2.4 Connecting additional accessories . . . . . 54
6.3 Electrical connections in the junction box
(120 VAC) . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.3.1 Mounting rails for junction box . . . . . . . . 55
6.3.2 Connecting an external heating zone
pump or DHW recirculation pump . . . . . . 55
6.3.3 DHW tank loading pump or 3-way valve
with spring return (only heating boiler
ZBR..-3A) . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.3.4 Connecting mains power supply . . . . . . . 56
6.4 Connecting the LWCO device . . . . . . . . . 57
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