Part Number 550-110-641/0605
8
PFG SerieS 7 GaS-Fired Water Boiler — Boiler Manual
Bypass piping
Bypass piping is not normally required on
any baseboard system.
Bypass piping should be used for the following instal-
lations. (Bypass, supply, and return piping should be
same size.)
1. Use the piping shown in Figure 3 to protect:
• radiant panels, plaster, etc. from high temperature
water supplied from boiler, or
• boiler from condensation caused by low temperature
water returned from system.
2. Use the piping shown in Figure 4 to protect boiler from
condensation formed by low water temperature returned
from large water content converted gravity systems, etc.
Figure 4
Figure 3
