A.O. Smith Conservationist Large Volume COF and COBT Technical Documents

APPLICATION TYPE DIAGRAM

SEE INSTALLATION MANUAL

FOR COMPLETE INSTRUCTIONS

INSTALL IN ACCORDANCE WITH LOCAL CODES.

ONE OR TWO TEMPERATURE

TWO HEATERS

WITH OR W/O MIXING VALVE

TWO PREHEATERS WITH BOOSTER

HEATER WITH OR W/O BUILDING

RECIRCULATTION

OIL FIRED TANK TYPE

COF-199 THRU 700

MUST BE IDENTICAL HEATERS

TWO HEATERS WITH OR WITHOUT MIXING VALVE

OUTLET

(BOOSTED

TEMPERATURE)

CAUTION:

IF BUILDING COLD WATER SUPPLY HAS A BACKFLOW

PREVENTER, CHECK VALVE OR WATER METER WITH

CHECK VALVE, PROVISIONS FOR THERMAL EXPAN-

SION OF WATER IN THE HOT WATER SYSTEM MUST BE

PROVIDED.

* PIPE RELIEF VALVE TO OPEN DRAIN.

** 120°F SHOULD BE MINIMUM AND 140°F TO 150°F

SHOULD BE MAXIMUM TEMPERATURE OF WATER

STORED IN PRE-HEATER.

SEE PAGE A305.0 FOR MANIFOLD KITS.

MUST BE IDENTICAL HEATERS

TWO PRE-HEATERS WITH BOOSTER HEATER

Revised March 1996 A 309.0

MEDIUM TEMPERATURE

ONE HEATER WITH

AUXILIARY STORAGE TANK

FORCED CIRCULATION WITH

OR W/O BUILDING RECIRCULATION

OIL FIRED TANK TYPE

COF-199 THRU 700

APPLICATION TYPE DIAGRAM

SEE INSTALLATION MANUAL

FOR COMPLETE INSTRUCTIONS

INSTALL IN ACCORDANCE WITH LOCAL CODES.

VERTICAL STOTRAGE TANK

CAUTION:

IF BUILDING COLD WATER SUPPLY HAS A BACKFLOW

PREVENTER, CHECK VALVE OR WATER METER WITH

CHECK VALVE, PROVISIONS FOR THERMAL EXPAN-

SION OF WATER IN THE HOT WATER SYSTEM MUST BE

PROVIDED.

* PIPE RELIEF VALVE TO OPEN DRAIN.

HEATER THERMOSTATS SHOULD BE SET AT LEAST 5°

HIGHER THAN TANK TEMPERATURE CONTROL.

A 310.0

© A. O. Smith Corp., 1996

HORIZANTAL STORAGE TANK

Printed in U.S.A.