Three-Way Valves

Three-way valves intended to regulate system water temperatures by reducing flow in the boiler should not be used. Raypak heaters are high-recovery, low-mass heaters which are not subject to thermal shock. See Fig. 16 and instructions on page 17 for adjusting the manual bypass.

Domestic Hot Water

When designing the water piping system for domestic hot water applications, water hardness should be con- sidered. Table G indicates the suggested flow rates for soft, medium and hard water. Water hardness is ex- pressed in grains per gallon.

SYSTEM

SUPPLY

SYSTEM

RETURN

Fig. 14: Single Domestic Hot Water Heater and Storage

Tank

NOTE: If local codes require a vacuum relief valve, acquire one locally and install per valve manufacturer’s instructions.

Potable Water and Space Heating

CAUTION: When this heater is used for both potable water and space heating, observe the following 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 (60°C), a means such as a mixing valve shall be installed to temper the water in order to reduce scald hazard potential.

Pool Heating

When a boiler or water heater is used in a pool heat- ing application, ensure that all the following installation requirements are met.

 

Model

Soft (0-4 grains per gallon)

Medium (5-15 grains per gallon)

Hard* (16-25 grains per gallon)

 

 

No.

T

 

gpm

 

P

MTS

SHL

T

gpm

P

MTS

SHL

T

gpm

P

MTS

SHL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

503

17

 

50

 

3.6

2

5.9

17

50

3.6

2

5.9

9

95

10.4

2

18.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

753

26

 

50

 

4.0

2

6.3

20

65

6.4

2

10.2

13

100

13.8

2

22.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1003

30

 

58

 

6.0

2-1/2

7.2

20

87

12.0

2-1/2

14.4

15

113

18.7

2-1/2

22.6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1253

30

 

73

 

10.4

2-1/2

12.1

20

109

21.0

2-1/2

24.6

19

113

22.3

2-1/2

26.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1503

30

 

87

 

16.0

2-1/2

18.5

23

113

25.7

2-1/2

29.6

23

113

25.7

2-1/2

29.6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1753

30

 

102

 

22.7

2-1/2

26.0

27

113

27.4

2-1/2

31.3

27

113

27.4

2-1/2

31.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2003

30

 

116

 

32.0

2-1/2

36.1

30

116

32.0

2-1/2

36.1

30

116

32.0

2-1/2

36.1

 

 

∆T = Temperature

 

rise,

 

°F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

∆P = 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 of 50 eq. ft. of tubing)

 

gpm = Gallons per minute, flow rate

 

 

 

 

 

 

 

 

 

 

 

 

 

MTS = Minimum tubing size

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Must utilize optional cupro-nickel tubes. If over 25 grains per gallon, a water softener/treatment system must be utilized.

 

 

 

Caution: For scale free operation with "Hard Water" (16-25 grains per gallon of total hardness), the operating control must NOT be set

 

higher than 130 F. For higher than 130 F operation, a water softener/treatment system must be utilized.

 

 

 

 

 

 

 

 

 

 

 

Table G: Domestic Water Heater Flow Rate Requirements

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16

 

 

 

 

 

 

 

 

Page 15 Page 17
Page 16
Image 16
Raypak 503-2003 manual Three-Way Valves, Domestic Hot Water, Potable Water and Space Heating, Pool Heating
Page 15 Page 17

503-2003 specifications

The Raypak 503-2003 is a notable entry in the world of water heating solutions, renowned for its efficiency and reliability in both residential and commercial settings. This model is designed to provide exceptional performance while maintaining ease of use and minimization of environmental impact.

One of the standout features of the Raypak 503-2003 is its advanced heating technology. The unit utilizes a durable, copper heat exchanger which ensures quick and efficient heating of water. This heat exchanger is known for its ability to transfer heat effectively, leading to reduced energy consumption and lower utility bills. The design also allows for a seamless operation, ensuring that the system heats water swiftly without sacrificing performance.

In addition to its efficient heating capabilities, the Raypak 503-2003 is equipped with innovative controls. The digital control panel allows users to easily set and adjust the desired water temperature. This feature provides a level of convenience that simplifies operation while enhancing user experience. Furthermore, the smart technology employed in the unit ensures that it operates within optimal parameters, avoiding unnecessary energy expenditure.

Durability is another hallmark of the Raypak 503-2003. Built with heavy-duty components, this water heating solution is designed to withstand the rigors of continuous use. The rugged construction ensures longevity, making it a cost-effective investment for homeowners and businesses alike. Moreover, the unit is designed to be resistant to corrosion and wear, further extending its lifespan and reliability.

The energy efficiency of the Raypak 503-2003 is a crucial characteristic that sets it apart from competitors. Rated with a high efficiency score, this model contributes to lower emissions and is environmentally friendly. It adheres to various energy standards, making it a suitable choice for those looking to reduce their carbon footprint while enjoying reliable water heating.

Noise reduction is another important feature of the Raypak 503-2003. Designed with quiet operation in mind, the unit operates with minimal noise pollution, allowing for a pleasant environment in both residential and commercial spaces.

In summary, the Raypak 503-2003 combines advanced heating technology, user-friendly controls, durability, and energy efficiency into a robust water heating system. This makes it an excellent choice for those in need of dependable and sustainable heating solutions. Whether for daily home use or for larger commercial applications, the Raypak 503-2003 stands out as a leader in its class.
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