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De Dietrich Gas 310/610 ECO
1 ½
Cross
TEE
1 ½ In x ?? reducing bushing (if
required) for relief valve as required
Relief valve must be piped vertical
1 ½ In x 1/8 reducing
bushing for Air vent
1 ½ in x 2 In.
nipple
Gas310/610 Supply manifold pipe
1 ½ In x ¾ In
reducing
bushing for LWCO
Bell & Gossett
#97 Air vent
Apollo/Conbraco
10-604 or 605 series
relief valves
Hydrolevel OEM 550
SafGard LWCO
Miljilco P/T
gauge
Honeywell
L4006E 1067
Safety Hi Limit
Installer/Installation note:
The LWCO can be mounted anywhere
on the boiler supply piping instead of
mounting on supplied cross tee, must be
within 48 inches be above the boiler.
BoilerSystem
7.6 Typical water system layout
The piping diagram illustrates the minimum boiler
system controls needed, the by-pass system is not
necessary, but can be used in multiple heating
temperature circuits.
Consult all national, local and building codes having
jurisdiction for other requirements regarding the boiler
system.
It is strongly suggested a decoupling devise is used
when the system flow is unknown. For multiple
boilers, consult the factory.
Check local codes regarding condensate discharge
into the common drain.
Water must be analyzed to ensure acceptable quality.
If make water consumption is unknown, the system
should be checked at regular intervals consult
water specialists for assistance. See section 7.4.3.
When the boiler is connected to a refrigeration
system, it must be installed so the chilled medium is
piped in parallel with the boiler with appropriate valve
to present the chilled medium from entering the
boiler.
The boiler piping
system of a hot
water boiler
connected to
heating coils
located in air
handling units
where they may be
exposed to
refrigeration air
circulation must be
equipped with flow
controls valves or
other automatic
means to prevent
gravity circulation of
the boiler water
during cooling
operations.
All water piping and reliefs shall be piped to avoid any ingest of water near the boiler controls. The piping diagram
shown below does not reflect all systems consult local and national codes having jurisdictions regarding other water
system controls required.
Primary-Secondary
Loop Decoulping
Heating Circuits
B
C
D
I
N
J
L
H
G
FE D
D
M
K
Legend
Boiler Return
Boiler Supply
Valve
Non-Return Valve
Automatic Fill Valve
Expansion Tank
Pressure-Temp Gauge
Safety Relief Valve
Feed Water Main
M
A
B
C
D
E
F
G
H
I
J
K
L
M
N
Modulating Sensor
Automatic Air Vent
3-Way Valve
Pump
Drain
Boiler Water Connections [Minimum]
A
28


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