Lennox GWM-050IE, Installation Instructions Manual

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14
Piping Legend
FIGURE 5-4 System Piping
NOTICE
Illustrations are meant to show system piping
concept only. Installer responsible for all
equipment and detailing required by authority
having jurisdiction.
System
Return
System
Supply
Safety Relief Valve
WALL
MOUNTED
ONLY
Pipe to
condensate
drain
Table 3 - System Piping Configurations
Single Boiler
Two Pipe Zoned System
With Zone Valves figure 5-5
With Zone Pumps figure 5-6
Primary/Secondary Pumping
Closed External Primary Loop figure 5-7A
Open External Primary Loop figure 5-7B
Multiple Boilers
Two Pipe Zoned System
With Zone Valves figure 5-8A
With Zone Pumps Not Shown
Primary/Secondary Pumping
Closed External Primary Loop figure 5-8B
Open External Primary Loop
figure 5-8C
5 - HYDRONIC PIPING