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Vitodens 100-W, B1HE/B1KE Combi Installation/Service
Vitodens 100-W, B1HE 85, 120, 150, 199 with
- DHW storage tank
- one heating circuit
connected directly to the boiler
Legend
PRV Pressure relief valve
TPV Temperature and pressure relief valve
A Vitodens 100-W gas fired condensing boiler
B External boiler controller with room thermostat
connection (field supplied)
C Heating circuit
D Expansion tank
E DHW storage tank
F DHW tank temperature sensor (or DHW temperature
switch)
G Outdoor temperature sensor
Note: Refer to the residual head curves on page 32.
The use of a low-loss header is recommended if
the water flow rate is above or below the operating
range.
The low-loss header is available as accessory part.
Maximum Flow Rates
Ensure that a pressure activated by-pass is installed if
there are system component(s) in C that may isolate the
flow to the pump.
IMPORTANT
System Layout 1
Model B1HE 85 120 150 199
Output MBH 80 113 141 187
t
30ºF (17ºC) rise GPM (L/h) 5.3 (1204)* 7.5 (1703)* 9.4 (2135)* 12.5 (2839)*
35ºF (19.5ºC) rise GPM (L/h) 4.6 (1045) 6.5 (1476)* 8.1 (1840) 10.7 (2430)*
40ºF (22ºC) rise GPM (L/h) 4.0 (908) 5.7 (1295) 7.1 (1613) 9.4 (2135)
* Requires low loss header or closely spaced tees.
Installation
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