Operating instructions

15
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 Congurations
Single Boiler
Two Pipe Zoned System
With Zone Valves gure 5-5
With Zone Pumps gure 5-6
Primary/Secondary Pumping
Closed External Primary Loop
gure 5-7A
Open External Primary Loop gure 5-7B
Multiple Boilers
Two Pipe Zoned System
With Zone Valves gure 5-8A
With Zone Pumps Not Shown
Primary/Secondary Pumping
Closed External Primary Loop gure 5-8B
Open External Primary Loop
gure 5-8C
5 - HYDRONIC PIPING