17
Figure 11: Schematic Tankless Heater Piping
Table 1: Tankless Heater Ratings
Boiler Model STD. #7524 OPT. #7530
GPM PSI D GPM PSI D
RSA170 3¾ 25½ 4 26½
RSA195, 240, & 285 4 29 31
Boiler Model S350 S375
GPM PSID GPM PSID
RSA(H) 85 & 110 3 12 15
RSA110(H)125 & 135 16 3¾ 25
RSA125 & 135 1 9