ACV CC105s, Installation & Maintenance Manual

Page: 18 / 64

13
5. Boiler Piping
Max. 12"
Boiler
Supply
System
Return
System
[30.5 cm]
Cold
Water Fill
Boiler
Supply Return
7
10
1
2
3
5
4
6
6
6
11
Fig. 5: Near Boiler Piping - Diaphragm Expansion Tank
7
1
10
9
8
4
3
6
6
6
Cold
Water Fill
Boiler
Supply
Minimum
3/4" Piping
Boiler
Return
Return
System
Supply
System
11
Max.
12"
[30.5 cm]
Fig. 6: Near Boiler Piping - Closed Type Expansion Tank
System Circulator 1.
Automatic Air Vent 2.
Air Separator 3.
Automatic Fill Valve 4.
Diaphragm Expansion Tank 5.
Isolation Valve 6.
Drain/Purge Valve 7.
Tank Fitting 8.
Closed Type Expansion Tank 9.
Primary/Secondary Connection 10.
CH Circulator with Flow Check 11.
Refer to the installation manual provided with the SMART/COMFORT
for additional installation details.
See Setting the Appliance Parameters, Section 11.9, for parameter,
wiring and operational details using the SMART/COMFORT with a
CHALLENGER boiler. 5.14 System Piping - Special Application
If the boiler is used in conjunction with a chilled water/medium
system, the boiler and chiller must be piped in parallel. Install
flow/check valves to prevent the chilled medium from entering the
boiler.
If the boiler is used to supply hot water to the heating coils of an air
handler where they may be exposed to chilled air circulation, install
flow/check valves or other automatic devices to prevent gravity
circulation of the boiler water during cooling cycles.