INSTALLATION AND OPERATION INSTRUCTIONS
1-32
SFC COMBI BOILERS SFC-99, SFC-125
Figure 31: Tankless DHW Piping Options – concept drawing. This drawing is only a simple
schematic guide.
DOMESTIC HOT WATER
DELIVERY
@ 67°F / 37.2°C temperature
rise
SFC-99 2.4 GPM
SFC-125 3.2 GPM
CAUTION
The eld supplied
thermostatic mixing valve
may be installed on the direct
domestic hot water piping
connections at the unit or
at the outlet of a domestic
hot water storage tank if
using the domestic hot water
function. Failure to install the
thermostatic mixing valve
may result in a hazardous
situation which can cause
serious injury or death. See
section 1.7.2.
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