Figure 11: Schematic Tankless Heater Piping
Table 1: Tankless Heater Ratings
Boiler Model
RSA(H)85 & 110
RSA110(H)125 & 135
RSA125 & 135
Boiler Model
RSA170
RSA195, 240, & 285
S350
GPM
PSID
3
12
3¼
16
3½
19
STD. #7524
GPM
PSID
3¾
25½
4
29
17
S375
GPM
PSID
3½
15
3¾
25
OPT. #7530
GPM
PSID
4
26½
4¼
31