Potable Water and Space Heating

CAUTION: When this heater is used for both potable water and space heating, observe the follow- ing to ensure proper operation.

1.All piping materials and components connected to the water heater for the space heating application shall be suitable for use with potable water.

2.Toxic chemicals, such as used for boiler treatment, shall not be introduced into the potable water used for space heating.

3.If the heater will be used to supply potable water, it shall not be connected to any heating system or components previously used with a non-potable water heating appliance.

4.When the system requires water for space heating at temperatures higher than 140°F, a means such as a mixing valve shall be installed to temper the water in order to reduce scald hazard potential.

Fig. 13: Single Domestic Hot Water Heater and Storage

Tank

Pool Heating

CAUTION: Power to the heater should be inter- locked with the main system pump to make sure the heater does not fire without the main system pump in operation. Improper flow control can damage the heater. Uncontrolled flow (too high) or restricted flow (too low) can seriously damage the heater. Follow these instructions to make sure your heater is prop- erly installed.

The Hi Delta pool heater is equipped with an external pump and bypass arrangement as standard equip- ment. This arrangement blends outlet water with the inlet water to increase the inlet water temperature, thereby reducing the likelihood of condensation form- ing on the heat exchanger. The pump also serves to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

Soft (0-4 grains per gallon)

Medium (5-15 grains per gallon)

Hard* (16+ grains per gallon)

 

 

No.

T

gpm

P

MTS

SHL

T

gpm

P

MTS

SHL

T

gpm

P

MTS

SHL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

302A

13

40

2.0

2

4.3

10

52

3.3

2

7.1

6

90

9.8

2

20.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

402A

17

40

2.0

2

4.4

13

52

3.4

2

7.2

8

90

10.0

2

20.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

502A

21

40

2.1

2

4.5

16

52

3.5

2

7.4

9

90

10.4

2

20.9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

652A

28

40

2.2

2

4.6

20

55

4.1

2

8.4

12

90

10.8

2

21.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

752A

30

42

2.6

2

5.2

20

63

5.7

2

11.1

14

90

11.3

2

21.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

902A

30

51

3.9

2

7.6

20

76

8.4

2

16.1

17

90

11.7

2

22.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ΔT = Temperature rise, °F

ΔP = Pressure drop through heat exchanger, ft

SHL = System head loss, ft (based on heater and tank placed no more than 5 ft apart and equivalent length pipe/fittings of 2” tube = 25 ft) gpm = Gallons per minute, flow rate

MTS = Minimum tubing size

*Must use optional cupro-nickel tubes. If over 25 grains per gallon, a water softening system must also be used

Table I: Domestic Water Heater Flow Rate Requirements

18

Page 17 Page 19
Page 18
Image 18
Raypak 302A-902A manual Potable Water and Space Heating, Pool Heating
Page 17 Page 19

302A-902A specifications

The Raypak 302A-902A is a highly regarded pool and spa heater, known for its efficiency and reliability in delivering warmth to residential and commercial aquatic applications. This heater stands out due to its robust design, advanced technology, and user-friendly features.

One of the key characteristics of the Raypak 302A-902A is its dual fuel capability, which means it can run on either natural gas or propane. This flexibility allows users to choose their preferred fuel type, contributing to operational efficiency and cost-effectiveness. With a BTU output ranging from 302,000 to 902,000, the Raypak heater is capable of quickly heating large volumes of water, making it ideal for pools, spas, and hot tubs.

The heater incorporates advanced technology such as a stainless steel heat exchanger, which not only ensures excellent thermal conductivity but also promotes durability against corrosion. This is especially advantageous in harsh environments, where exposure to chemicals can significantly impact the lifespan of traditional copper heat exchangers. The Raypak 302A-902A's heat exchanger is designed to withstand the rigors of constant use while maintaining high performance levels.

Another prominent feature of the Raypak 302A-902A is its digital display control system, which simplifies the operation and monitoring of the heater. Users can easily set and adjust temperatures, as well as access diagnostic information, all through an intuitive interface. This digital control not only enhances user experience but also aids in the timely maintenance of the unit.

Energy efficiency is another major selling point of the Raypak 302A-902A. The heater is designed with environmentally friendly practices in mind, utilizing a low NOx burner that minimizes harmful emissions. This not only meets environmental regulations but also makes it a greener alternative for heating needs.

In terms of installation, the compact design of the Raypak 302A-902A allows for versatile placement options, whether in a residential backyard or a commercial environment. Its user-friendly installation process ensures that homeowners and businesses alike can enjoy the benefits of heated water with minimal hassle.

Overall, the Raypak 302A-902A is an exemplary choice for anyone seeking a high-quality, efficient, and flexible pool and spa heating solution. Its combination of robust engineering, advanced technology, and user-focused features solidifies its position as a leader in the market, promising effective heating for years to come. Whether for personal enjoyment or commercial use, this heater delivers exceptional performance that meets diverse heating needs.
Top Page Image Contents