Lochinvar SDT/SET065 - 119 1General Information, Operating Restrictions, A Component Materials

SDT/SET Installation & Operation Manual

1General Information

The Lochinvar SDT/SET series indirect water heater (FIG. 1-1) is designed to generate domestic hot water in conjunction with a solar panel using forced circulation with a backup heat source. This indirect water heater consists of a 316L Stainless Steel tank in which a smooth 304L stainless steel coil is located (Table 1A). Solar heating fluid is pumped through the coil and heats the water in the tank. If the solar panel cannot produce enough heat, the backup source should supply hot water. This tank is not intended for use in pool heating applications or for heating any fluid other than water. It is also not intended for use in gravity hot water heating systems.

Operating Restrictions:

•Maximum domestic hot water temperature is 194°F.

•Maximum boiler water temperature is 210°F.

•Maximum working pressure for the vessel tank is 150 psig.

Single-Wall Heat Exchanger

Uniform Plumbing Code

Single-wall heat exchangers are permitted if they satisfy all of the following requirements --

1.The heat transfer medium is potable water or contains only substances which are recognized as safe by the U.S. Food and Drug Administration.

2.The pressure of the heat transfer medium is maintained less than the normal minimum operating pressure of the potable water system.

3.The equipment is permanently labeled to indicate that only additives recognized as safe by the FDA shall be used in the heat transfer medium.

Other heat exchanger designs may be permitted where approved by the Administrative Authority.

Table 1A

Component Materials

Component	Material
Tank	316L Steel Stainless Steel
Coil	304L Stainless Steel
Insulation	Polyurethane
Jacket	Polypropylene / ABS

Figure 1-1Lochinvar SDT and SET Series Indirect Water Heaters

1. RELIEF VALVE CONNECTION	PART NO.	“A”	“B”	“C”	“D”	“E”	“F”	“G”	“H”	“I”	WEIGHT
2. HOT WATER OUTLET		(in.)	(in.)	(in.)	(in.)	(in.)	(in.)	(in.)	(in.)	(in.)	FULL OF WATER
											(LBS)
3. BOILER WATER IN	SDT065	3 5/16	9 1/8	27 15/16	33 5/8	47 3/16	52 5/16	59 7/8	N/A	24	820
4. BOILER WATER OUT	SDT080	3 5/16	9 1/8	27 15/16	40 3/16	53 3/4	61 13/16	69 3/8	N/A	24	921
5. DRAIN / COLD WATER INLET	SDT119	3 5/16	9 3/8	31 11/16	37 7/16	54 1/2	60 1/8	68 3/16	N/A	28	1268
6. SOLAR WATER IN	SET065	3 5/16	9 1/8	27 15/16	N/A	N/A	52 5/16	59 7/8	59 7/8	24	820
7. SOLAR WATER OUT	SET090	3 5/16	9 1/8	27 15/16	N/A	N/A	61 13/16	69 3/8	59 7/8	24	921
8. ELEMENT	SET119	3 5/16	9 3/8	31 11/16	N/A	N/A	60 1/8	68 3/16	59 7/8	28	1268
“I”										“I”

SOLAR DUAL

COIL

“G”

“F”

“E”

“D”

“C”

“B”

“A”

4

				SOLAR ELECTRIC
o
.5	o
22		1 - 1/2” FPT	2
	45
		3/4” FPT	1
		AQUASTAT WELL
		1” MPT	3
		1” MPT	8
		1” MPT	6
					“G”
		SOLAR SENSOR			“F”
					“H”
		1” MPT	7		“C”
		1 - 1/2” MPT		5

“B”

“A”

o 22.5

o

45

1 - 1/2” FPT 2

3/4” FPT 1

1” MPSF 8

1” MPT 6

SOLAR SENSOR

1” MPT 7

1 - 1/2” MPT 5