Piping Diagrams - heat-timer VSP Installation & Operating Instructions Manual

Injection System Components
BOILER
Horizontal Piping Detail
Primary Loop
Max
4D
Vertical Piping Detail
Primary Loop
Secondary Loop
CAUTION: The Injection pump and pipe sizing should be performed by a qualified engineer or contractor.
Injection Pum p
Primary Loop
Boiler Return Sensor
Injection Piping
1
2
Min 18 "
Max 4D
2 1
Min 18"
Max 4D
Secondary Loop Pum p
1
2
Globe Valve
Secondary Loop
Max
4D
Injection Piping
3
Secondary Loop Sensor
Secondary
Loop
Max 4D
Maximum length of pipe
between tees should not
exceed 4 times the pipe
diameter
Min 18"
Minimum v ertical drop of 18
inches on heat trap or
between the Primary and
Secondary loops
Pipe Sizing
The Injection piping diameter
must be at least one pipe
size smaller than the smaller
of the Primary or Secondary
loop piping. See Sizing
Charts on pages 4 and 5.
Primary and Secondary pipe
diameters may dif f er
Injection Pum p
Pump motor ty pe must be
f ractional horse power
permanent split capacitor
2
Globe Valve
Balances the heating sy stem
1