Bosch UT-L 1 Technical Manual page 3

9.3.1 Boiler circuit pump in the bypass as shunt
pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
9.3.2 Boiler circuit pump as primary circuit pump .
55
9.3.3 Hydraulic balancing line . . . . . . . . . . . . . 56
9.4 1-boiler system with UNIMAT UT-L boiler:
boiler and heating circuit control unit . . . 57
9.5 1-boiler system with UNIMAT UT-Lboiler:
boiler and heating circuit control unit
with hydraulic separation . . . . . . . . . . . . . 58
9.6 1-boiler system with UNIMAT UT-L boiler:
boiler circuit control unit . . . . . . . . . . . . . 59
9.7 1-boiler system with UNIMAT UT-L boiler:
boiler circuit control unit with hydraulic
separation . . . . . . . . . . . . . . . . . . . . . . . . 60
9.8 2-boiler system with two UNIMAT UT-L
boilers: boiler circuit control unit with
hydraulic separation . . . . . . . . . . . . . . . . . 61
9.9 1-boiler system with UNIMAT UT-L boiler
with flue gas heat exchanger: boiler circuit
control unit . . . . . . . . . . . . . . . . . . . . . . . . 62
9.10 1-boiler system with UNIMAT UT-L boiler
with condensing heat exchanger: boiler
circuit control unit with hydraulic
separation . . . . . . . . . . . . . . . . . . . . . . . . 63
9.11 2-boiler system with UNIMAT UT-L boiler
without flue gas heat exchanger and UT-L
boiler with condensing heat exchanger:
boiler circuit control unit with hydraulic
separation . . . . . . . . . . . . . . . . . . . . . . . . 64
9.12 UNIMAT UT-L boiler with flue gas heat
exchanger or condensing heat exchanger:
return temperature raising . . . . . . . . . . . . 65
10 Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
10.1 Transport and handling . . . . . . . . . . . . . . 66
10.1.1 Delivery method and transport options . . 66
10.1.2 Handling dimensions . . . . . . . . . . . . . . . . 66
10.2 Design of installation rooms and
combustion air supply
10.2.1 Installation location . . . . . . . . . . . . . . . . . 67
10.2.2 Combustion air supply . . . . . . . . . . . . . . 67
10.3 Installation dimensions . . . . . . . . . . . . . . 69
10.3.1 Installation room dimensions for the
UNIMAT UT-L boilers
10.3.2 Installation room dimensions for the
UNIMAT UT-L boilers with flue gas heat
exchanger . . . . . . . . . . . . . . . . . . . . . . . . . 70
10.4 Additional safety equipment to
DIN-EN 12828 . . . . . . . . . . . . . . . . . . . . . . 71
10.4.1 Safety equipment . . . . . . . . . . . . . . . . . . 71
10.4.2 Boiler safety equipment assembly to
DIN-EN 12828 . . . . . . . . . . . . . . . . . . . . . . 71
10.4.3 Intermediate return piece . . . . . . . . . . . . 72
10.4.4 Safety valve . . . . . . . . . . . . . . . . . . . . . . . 73
10.4.5 Flash trap to DIN-EN 12828 . . . . . . . . . . . 75
10.4.6 Return flow temperature safeguard
set (maintaining version) . . . . . . . . . . . . . 76
UNIMAT
. . . . . . . . . . . . . . . 67
. . . . . . . . . . . . . . . . 69
10.5 Additional devices for sound insulation . . 77
10.5.1 Requirements . . . . . . . . . . . . . . . . . . . . . . 77
10.5.2 Flue gas silencer . . . . . . . . . . . . . . . . . . . 77
10.5.3 Burner silencer hoods . . . . . . . . . . . . . . . 77
10.5.4 Boiler mounts to attenuate structure-
borne noise . . . . . . . . . . . . . . . . . . . . . . . 77
10.5.5 Boiler foundation . . . . . . . . . . . . . . . . . . . 78
10.6 Further accessories . . . . . . . . . . . . . . . . . 79
10.6.1 Drain connection and blow-down valve
assembly . . . . . . . . . . . . . . . . . . . . . . . . . 79
10.6.2 Walk-on boiler cover . . . . . . . . . . . . . . . . 79
11 Flue system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
11.1 Requirements . . . . . . . . . . . . . . . . . . . . . . 81
11.1.1 General notes . . . . . . . . . . . . . . . . . . . . . . 81
11.1.2 Special information for flue systems of
boilers with condensing flue gas heat
exchangers . . . . . . . . . . . . . . . . . . . . . . . 81
11.1.3 Material requirements for flue systems of
boilers with condensing heat exchangers 81
12 Condensate drain . . . . . . . . . . . . . . . . . . . . . . . 82
12.1 Condensate . . . . . . . . . . . . . . . . . . . . . . . 82
12.1.1 Creation . . . . . . . . . . . . . . . . . . . . . . . . . . 82
12.1.2 Condensate disposal . . . . . . . . . . . . . . . . 82
12.2 Neutralising system NE 2.0 . . . . . . . . . . . 82
12.2.1 Installation . . . . . . . . . . . . . . . . . . . . . . . . 82
12.2.2 Equipment level . . . . . . . . . . . . . . . . . . . . 82
12.2.3 Neutralising agent . . . . . . . . . . . . . . . . . . 82
12.2.4 Pump output graph . . . . . . . . . . . . . . . . . 82
Keyword index . . . . . . . . . . . . . . . . . . . . . . . . . . 84
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6 720 807 794 (2013/04)