BULLETIN 35

NOT ENOUGH HOT WATER - GAS

CAUSES

Complaints regarding an insufficient supply of hot water are typically the result of a water heater that cannot meet the demands of the residence (both people and appliances). The demand for sufficient hot water may also be exceeded if additional people and/or appliances are added to the residence. Another factor that may reduce the hot water output is mineral build-up. Reference Bulletin 13 to determine if mineral build-up may be effecting your hot water output. The following test will help determine if a water heater is supplying the intended amount of hot water.

TEST

Please read all the steps of the test prior to beginning. NOTE: This test is based on

 

140° F storage temperature and these amounts are approximate.

 

 

STEP 1

Do not use any hot water for two hours to ensure the accuracy of this test. Turn on the

 

cold water at full flow using a double handle faucet and time how long it takes to fill a

 

one-gallon jug. Calculate the Gallons Per Minute (GPM) flow rate as follows.

 

One-gallon Jug filled in:

 

 

 

 

 

 

 

 

 

 

5 seconds = 12 gallons per minute

 

 

 

 

 

 

 

10 seconds = 6 gallons per minute

 

 

 

 

 

 

 

15 seconds = 4 gallons per minute

 

 

 

 

 

 

 

20 seconds = 3 gallons per minute

 

 

 

 

 

 

 

30 seconds = 2 gallons per minute

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STEP 2

Using a thermometer, turn on the hot water and time how long it takes for the water

 

temperature to drop 30 degrees.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gallons Per Minute (GPM) Flow Rate

 

 

 

 

 

 

1.5

2

2.5

3

3.5

4

5

6

 

 

 

30 Gallon Tank

14 min.

10 min.

8 min.

7 min.

6 min.

5 min.

4 min.

3 min.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40 Gallon Tank

18 min.

14 min.

11 min.

9 min.

8 min.

7 min.

5 min.

4 min.

 

 

 

50 Gallon Tank

23 min.

17 min.

14 min.

12 min.

10 min.

9 min.

8 min.

6 min.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

65 Gallon Tank

30 min.

22 min.

18 min.

15 min.

13 min.

11 min.

9 min.

8 min.

 

 

 

75 Gallon Tank

35 min.

26 min.

21 min.

17 min.

15 min.

13 min.

10 min.

8 min.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100 Gallon Tank

47 min.

35 min.

28 min.

23 min.

20 min.

17 min.

14 min.

11 min.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

119 Gallon Tank

56 min.

42 min.

33 min.

28 min.

24 min.

21 min.

17 min.

14 min.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Minutes to drop 30° F

 

 

 

 

Example: 10 seconds to fill the one-gallon jug equals 6 gallons per minute flow rate. If the temperature drops 30 degrees in 6 minutes that equals 36 gallons of hot water. This is normal for a 50 gallon water heater. The amount will be about 70% of the capacity of the heater.

RESULTS

If the test performed above results in a 70% (+ /- 10 %) capacity, then the heater is performing per specifications and a larger water heater should be considered in order to meet the demand.

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State Industries GS6, GSX, GPX manual Not Enough HOT Water GAS, Test, Results
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GPX, GS6, GSX specifications

State Industries offers a range of high-quality residential and commercial water heaters that cater to diverse customer needs. Among their prominent models are the GSX, GS6, and GPX, each equipped with unique features, advanced technologies, and distinct characteristics that enhance their performance and efficiency.

The GSX series is well-known for its energy efficiency and reliability. It utilizes a high-efficiency gas burner to provide fast recovery rates, making it suitable for households with high hot water demand. The GSX water heaters are designed with a Foam Insulation System that minimizes heat loss and maximizes energy conservation. Additionally, their innovative design includes a durable glass-lined tank to prevent corrosion, ensuring long-term performance and extended lifespan.

Moving on to the GS6 model, this water heater is characterized by its user-friendly control features, including an adjustable thermostat that allows for precise temperature settings. The GS6 is built with a robust gas control valve that enhances efficiency and helps maintain consistent water temperature. The model is also designed with an anode rod that minimizes corrosion, prolonging the life of the tank. Its standing pilot light system provides reliable ignition, while its compact design makes it suitable for various installation locations, even in tight spaces.

The GPX series stands out in the market with its advanced technological features and sleek design. It integrates smart technologies designed to monitor and optimize performance. The built-in diagnostics programmable control allows users to track system performance and troubleshoot any potential issues easily. The GPX models also come equipped with a high-efficiency condensing gas burner that maximizes energy use, contributing to reduced utility bills. Furthermore, their stainless steel construction adds to their durability and resistance against rust and corrosion.

In summary, State Industries' GSX, GS6, and GPX models represent innovation in the water heating industry. They incorporate energy-efficient technologies, durable materials, and user-friendly controls, making them reliable choices for both residential and commercial applications. With custom features tailored to meet varied needs, these water heaters uphold State Industries' commitment to quality and customer satisfaction, ensuring that users enjoy consistent hot water while being conscious of energy consumption.
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