9
PN 240013666 REV. A [06/30/2022]
Figure 4 - Three (3) Unit Confirguration Parallel Reverse Piping Room Sizing
Note:
• Access
*
is minimum 24” service clearance�
• Vent position, relief valve location, supply and return piping will vary depending on type of units�
LEGEND - PIPE SIZING
(S), (R)
- 1¼ NPT BOILER SUPPLY AND RETURN
(B)
- HEADER - REFER TO TABLE 3
Typical Layouts for Hot Water Heating Systems
10"MIN.*
ACCESS*
FRONT
(B)
(S)
(R)
(B)
ACCESS*
RETURN
(R)
(S)
(R)
(S)
SUPPLY
ACCESS*
(Supply & Return at Opposite Walls of Boiler Room)
