19
FIGURE 5-8B Multiple Boilers Using Primary/Secondary Pumping with Closed External Primary Loop
5 - HYDRONIC PIPING
P/N# 240008888, Rev. O [07/15/2015]
Heating Load
Heating Load
Heating Load
Existing closely spaced tees
in primary system loop
12"/305mm
Maximum
Separation
Up to 16
boilers
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
Summary of Contents for Dunkirk Helix DKVLT-050
Page 48: ...48 13 TROUBLE SHOOTING P N 240008888 Rev O 07 15 2015...
Page 52: ...52 13 TROUBLE SHOOTING P N 240008888 Rev O 07 15 2015...
Page 54: ...54 13 TROUBLE SHOOTING P N 240008888 Rev O 07 15 2015...
Page 67: ...67 14 WIRING DIAGRAM 14 3 Connection Diagram 150 200 299 MBH P N 240008888 Rev O 07 15 2015...
