IBC IBGFSW1-0110

Closely-spaced tees: Install tees with straight piping (min. pipe diameter lengths as per
Table 9 ), with tees maximum 4 pipe diameters apart with no restrictions between fittings.
Figure 34 Primary-secondary piping details with closely-spaced tees
Figure 35 Primary-secondary piping with simultaneous heating calls
47
3.11.2 System piping