7
Piping Diagrams
ONE TEMPERATURE WITH CIRCULATING LOOP
INSERT B
VACUUM RELIEF
VALVE. INSTALL PER
LOCAL CODES.
CAUTION: IF BUILDING COLD WATER SUPPLY HAS A BACK-
FLOW PREVENTER, CHECK VALVE OR WATER METER WITH
CHECK VALVE. PROVISIONS FOR THERMAL EXPANSION OF
WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED.
*PIPE TO OPEN DRAIN
INSTALL IN ACCORDANCE WITH ALL LOCAL CODES.
DANGER
TEMPERATURE SETTING SHOULD NOT EXCEED SAFE
TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE
CONTROL WARNING ON PAGE 6. IF HIGHER PREHEAT
TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE
BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT
WATER SUPPLIED TO FIXTURES.
Summary of Contents for DRE
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