Dunkirk Helix VLT Vertical Laser Tube, Wall Hung Modulating Condensing Boiler - Manual (Page 18)

18
FIGURE 5-8A Multiple Boiler Two Pipe Zoned System With Zone Valves - (See Multiple Boiler Guide)
5 - HYDRONIC PIPING
Up to 16
boilers
DHW
Pump
(See Multiple Boiler Guide)
CH/System
Pump 12"/305mm Maximum Separation
System
Temperature
Sensor
Size common piping
per maximum heat
capacity of entire
system
All internal
primary loop
ball valves
closed
Limit
length to
5' (1.6m)
3/8"/10mm Open
End Wrench may
be required to
turn valve