Lochinvar Epic 100 Series Installation & Service Manual page 48

6B
Domestic water piping (Combi Only)
Figure 6-12 DHW Recirculation w/Dedicated Return
Note: Aquastat for DHW
recirculation pump or thermostatic
shut off valve must be used to
stop recirculation water fl ow once
the desired temperature has been
reached.
For best performance, Pre-Heat
Mode should be enabled when
using DHW recirculation.
PRESSURE
RELIEF VALVE
(REQUIRED,
FIELD SUPPLIED)
HOT WATER
FIXTURES
AQUASTAT
Hydronic piping omitted for clarity.
NOTICE
To prevent scalding from DHW recirculation temperature creep, a suitable method to stop recirculation
⚠WARNING
flow once water in the loop has reached the desired temperature must be used. Failure to stop water
flow once the desired DHW temperature has been reached can result in serious injury or death due to
scalding.
Please note that these illustrations are meant to show system piping concept only, the installer is
NOTICE
responsible for all equipment and detailing required by local codes.
An ASSE 1070 anti-scald mixing valve is REQUIRED. Failure to comply could result in property
⚠WARNING
damage, severe injury, or death.
48
BOILER
UNION
(TYPICAL)
ASSE 1070
ANTI-SCALD
MIXING VALVE
(REQUIRED)
TEMPERATURE /
PRESSURE GAUGE
FLOW
CONTROL
VALVE
RECIRCULATION
PUMP
Installation & Service Manual
™
F I R E T U B E
EXPANSION
TANK
H C
M
DIR #2000534677 00
FLOW
CHECK
COLD
WATER
SUPPLY