These single wall heat exchangers comply with National Standard
Plumbing Code provided that:
•
Boiler water (including additives) is practically non-toxic,
having a toxicity rating or class of 1, as listed in Clinical
Toxicology of Commercial Products.
•
Boiler water pressure is limited to max. 15 psig by approved
steam relief valve.
Figure 14
Tankless heater piping
SGO 3-5 tankless
heater control location
SGO 6-9 tankless heater
control location
Flow
regulating valve
Automatic mixing
valve
Mixed
Hot
Cold
Cold water
supply
12" Min.
Connect tankless heater piping
Part number 550-141-829/1211
23
GOLD
SGO
OIL-FIRED NATURAL DRAFT STEAM BOILER — SERIES 3 —
Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.