Smith Cast Iron Boilers GVIOM-5R manual GV100W BOILER INSTALLATION & OPERATING, Gas Supply Piping

Page 12

GV100W BOILER

INSTALLATION & OPERATING

Circulators

The TACO 007 circulator supplied with the boiler is sized for use in a closed heating system with a 30 psi, 207 kPa maximum operating pressure. If the 007 circulator does not have the required capacity for the system in which it is to be installed, an extra zone circulator or a higher capacity circulator will be needed. FIG. NO. 11 depicts the performance curve for the TACO 007 circulator.

FIG. NO. 12 depicts the proper way to connect the boiler to the gas supply piping. The manual shut-off valve MUST be installed in the supply piping. It should be approximately 5 ft,

1.5m, above the floor. Provide a sediment trap/ drip leg at the bottom of the vertical section of the gas supply pipe. A ground joint union should be installed between the boiler gas controls and the supply piping. Each of these items are needed to ensure long life and ease of servicing. Always use a pipe sealant that is suitable for use with LP gas.

FIG. NO. 11 TACO 007 Performance Curve

10

CAUTION: Always use a wrench on the gas valve body when making gas connections to it. Never over-tighten the piping entering the gas valve body. Failure to comply with this caution may result in gas valve failure!

WATEROF FEET-	8
	6
	4
HEAD
		TACO 007 CIRCULATOR
	2	PERFORMANCE CURVE

FIG. NO. 12 Gas Supply Piping

GAS INLET

INSTALL MANUAL SHUT-OFF VALVE 5 FT. ABOVE FLOOR

WHERE REQUIRED BY LOCAL CODES

SEDIMENT TRAP

OR

DRIP LEG

(TO EXTEND TO FLOOR)

GAS SUPPLY

PIPING

GROUND JOINT

UNION

TO

BOILER

0
0	5	10	15	20	25

FLOW - GPM

GAS SUPPLY PIPING

WARNING: All gas piping must be installed by a qualified technician in accordance with the provisions set forth in the latest edition of ANSI Z223.1/NFPA 54 and all applicable local building codes and regulations. A licensed propane installer must make all LP gas connections. Improper gas connections could result in a fire or an explosion!

The GV100W hot water boiler comes from the factory ready to be piped to the gas supply.

WARNING: Check the boiler rating plate and make sure that the boiler is for the type of gas that will be used. If it isn’t Do not connect the boiler to the gas supply or a fire or an explosion may occur!

If for any reason the boiler is not for the type of gas available at the installation site, call the nearest Smith Cast Iron Boiler distributor to resolve the problem.

FLOOR LEVEL

Table 3 should be used to ensure that the gas supply piping is sized properly. If more than one appliance is supplied by the same supply pipe, the piping must be sized based on the maximum possible demand. Do not neglect the pressure drop due to pipe fittings. Table 4 should be used in conjunction with Table 3 to ensure that the gas supply piping is sized properly.

Safe lighting and other performance criteria were met with the gas manifold and control assembly provided on the boiler when the boiler underwent tests specified in ANSI Z21.13/CAN 4.9. All gas connections must be leak tested before putting the boiler into operation.

WARNING: Never use an open flame to test for gas leaks. Always use an approved leak detection method. Failure to comply with this warning could result in an explosion!

Whenever the gas supply piping is pressure tested the boiler gas controls must be protected. If the test pressure is equal to, or less than 1/2 psig, 3.5 kPa, isolate the boiler by closing it’s manual shut off valve, see FIG. NO. 8. If the test pressure is greater than 1/2 psig 3.5 kPa, disconnect the boiler and it’s individual shut-off valve from the gas supply piping.