A.O. Smith 2100, 200, 201, 2500, 1850, 1300, 1500, 1000 Single boiler with vertical tank

ONE GENESIS (MODEL GW) HOT WATER SUPPLY BOILER WITH VERTICAL TANK

PRESSURE RELIEF VALVE RATING SHOULD NOT EXCEED PRESSURE CAPACITY OF ANY COMPONENT IN THE SYSTEM. PIPING SHOULD CONFORM TO LOCAL CODES.

BALL VALVES ARE SHOWN FOR SERVICING BOILER. HOWEVER, LOCAL CODES SHALL GOVERN THEIR USAGE.

IMPORTANT

SAFETY FLOW SWITCH PROTECTS THE BOILER IN CASE OF WATER SERVICE INTERRUPTION OR CIRCULATOR FAILURE.

•PIPE TO OPEN DRAIN

XFACTORY INSTALLED ON UNIT  SUPPLIED WITH UNIT

 FIELD-INSTALLED

DANGER

TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE

TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE

CONTROL WARNING ON PAGE 23. IF HIGHER PREHEAT TEM-

PERATURES ARE NECESSARY TO OBTAIN ADEQUATE

BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT

WATER SUPPLIED TO FIXTURES.

INSTALL THERMAL EXPANSION TANK ON COLD WATER SUPPLY LINE, IF CHECK VALVE OR PRESSURE REDUCING VALVE IS USED IN SUPPLY.

	MINIMUM
MODELS	PIPE SIZE
	INCHES
GW-1000
THRU	2 1/2"
2500	NPT

FACTORY PUMP SIZING BASED

ON 50 EQUIVALENT FEET

(15.2 m) OF PIPE.

TWO TEMPERATURE WATER MIXING VALVE APPLICATION

Figure 13. Single boiler with vertical tank.

CIRCULATING RETURN

LINE CONNECTIONS

•TEMPERED WATER LOOP, IF USED, CONNECT TO POINT R.

•STORED TEMPERATURE WATER LOOP, IF USED, CONNECT TO ANY OPENING NEAR BOTTOM OF TANK.

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