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Figure 11: Schematic Tankless Heater Piping
Table 1: Tankless Heater Ratings
Boiler Model
STD. #7524 OPT. #7530
GPM PSID GPM PSID
RSA170 3¾ 25½ 4 26½
RSA195, 240, & 285 4 29 4¼ 31
Boiler Model
S350 S375
GPM PSID GPM PSID
RSA(H)85 & 110 3 12 3½ 15
RSA110(H)125 & 135 3¼ 16
3¾ 25
RSA125 & 135 3½ 19