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6167 818 - 10
Vitodens 100-W, B1HE/B1KE Combi Installation/Service
Installation
Piping Connections
(continued)
Scald protection
DHW temperatures of over 140°F (60°C) can occur
with gas condensing combi boilers. As a result, scald
protection should be installed on site in the DHW pipe.
Heating water connections
1. Thoroughly flush heating system (particularly before
connecting the boiler to an existing system).
2. Connect boiler to the heating system.
Note:
Use an approved pipe sealant or teflon tape
when connecting the installation fittings.
Use a two-hand wrench method when tightening
fittings or piping onto the boiler connectors. Use
one wrench to prevent the boiler pipes from twisting
and the second wrench to tighten the fitting or
piping. Failure to support the boiler connection could
damage the boiler and its internal piping.
SUPPORT ALL PIPING USING HANGERS. DO NOT support
piping by the boiler or its components.
Use isolation valves to isolate system components.
The B1HE DHW tank heating supply and return ports
must be capped if the DHW tank is not used.
All plumbing must meet or exceed all local state and
national plumbing codes.
IMPORTANT
Max. allowable working pressure (MAWP):
B1HE/KE 85/120 .....................45 psig (3 bar)
B1HE/KE 150/199 ...................60 psig (4 bar)
WARNING
Exposing the boiler to pressures and temperatures in
excess of those listed will result in damages, and will
render warranty null and void.
General
A distance of 2 in. (50 mm) from uninsulated hot water
pipes to combustible components must be maintained.
If the pipes are provided with a suitable pipe insulation
of sufficient thickness and insulation, the distance
mentioned above is not necessary (see also local gas
regulations).
Legend
A
Tank heating supply
B
Heating system return
C
DHW (B1KE only)
D
Gas connection
E
150 psi DHW pressure relief valve (B1KE only)
F
Filling valve
G
Tank heating return
H
Connection cold water (B1KE only)
K
Heating system supply
L
Drain valve
*1
Field supplied components
