Smith Cast Iron Boilers 19A SERIES Water Piping, Tankless Heaters, Smoke Hood

PAGE 6

19A SERIES BOILER

INSTALLATION INSTRUCTIONS

TABLE 5

NUMBER	EVAPOR.	WATER 1"	MIN. FEED	CONDENSATE
OF	RATE	BELOW WATER WATER PUMP		RECEIVER
SECTIONS	GPM	LEVEL GAL.	RATE-GPM	CAP.-GAL.
3	.61	1.4	1.22	12
4	.85	1.9	1.70	16
5	1.19	2.4	2.37	22
6	1.52	2.9	3.04	29

SYSTEM SUPPLY	CHECK VALVE
CONNECTIONS
	CIRCULATOR
GATE VALVE
	EXPANSION
RELIEF VALVE	TANK
	AIR REMOVAL
SUPPORT RELIEF VALVE	PIPING
DISCHARGE PIPE	GATE
	VALVE

7	1.86	3.3	3.71	35
8	2.19	3.8	4.38	41
9	2.53	4.3	5.05	47
10	2.86	4.8	5.72	54
11	3.20	5.2	6.39	60
12	3.53	5.7	7.06	66

Feed water makeup requirements.

NOTE

These recommendations are considered normal for compact buildings on the basis of 80% receiver use. Where buildings are spread out, additional receiver capacity may be necessary because of the extended

TERMINATE DISCHARGE PIPE SO AS TO AVOID DISCHARGE ON PERSONS

SYSTEM RETURN

CONNECTION

GATE VALVE

BLOWDOWN VALVE TO DRAIN

C.W. MAKEUP

CONNECTION

PRESSURE

REGULATING

VALVE

TYPICAL WATER PIPING DIAGRAM

time required for condensation to return to the receiver.

9.WATER PIPING

See FIGURE 5 for acceptable water piping diagram. TABLE 6 gives pumping rate and supply & return sizing for standard installations.

TABLE 6

BOILER SIZE	GPM	RETURN CONN.	SUPPLY CONN.
3	30	2"	2"
4	41	2"	2"
5	58	2-1/2"	2-1/2"
6	74	3"	3"
7	90	3"	3"
8	106	3"	3"
9	123	3"	3"
10	139	3"	3"
11	155	3"	4"
12	171	3"	4"

Based on 20° F system temperature drop.

NOTE

Boiler supplied with 4" water supply tapping and 3" return tapping.

FIGURE 5

10. TANKLESS HEATERS

Heater openings are provided for below-the-water-line tankless heater coils in all special intermediate sections when ordered. See TABLE 2 for the conr•ct placement of these heater sections. Install the low limit temperature control in the 3/4" tap located in the center of the coil.

If the heater sections are installed in an order other than in TABLE 2 the jacket panels will not match.

11. SMOKE HOOD

Install smoke hood with the correct size smoke pipe connecting collar using the 5/16" x 1-1/2" studs and hex nuts furnished in screw seats in the back section. Apply self- adhesive insulating tape (Items 21 and 22 in Parts detail drawing on Page 2) to smoke hood flange and damper angle Item 23. Fasten the slide damper in the open position for starting the burner adjustment process.

See FIGURE 6 for recommended “L” coil piping and FIGURE 7 for SM9-18 single and/or dual piping arrangements.