SERVICE PROCEDURE RE-III

Residential Thermostat Testing

Double Element, Non-Simultaneous, Single Phase Operation (continued).

Not Enough Hot Water (continued).

7.Check voltage across terminal L4 of upper thermostat and terminal 1 of lower thermostat (see illustration 11).

A)Rated voltage NOT present,

-check wire connection between thermostats.

B)Rated voltage IS present, okay, go to step 8.

WARNING

High voltage exposure. Use caution to avoid

personal injury during this procedure.

8.Adjust lower thermostat to highest setting. Water temperature in tank must be below the lower thermostat setting for this test.

9.Check voltage across terminal L4 of upper

thermostat and terminal 2 of lower thermostat (see illustration 12).

A) Rated voltage NOT present, replace lower thermostat.

B) Rated voltage IS present, thermostat is ok.

WARNING

 

Be sure thermostats are reset to their original

Illustration 11

temperature settings as found prior to

thermostat testing

 

Water Temperature In Tank Is Above Thermostat Setting.

1.This procedure assumes Line voltage, ECO and elements are in working order.

2. Adjust upper and lower thermostats to the lowest setting.

3. Turn power “ON” to water heater and set multi-meter to “Volts AC”.

4. Check across terminals L4 and T2 of upper thermostat (see illustration 8 on page 17).

A) Rated voltage IS present, replace upper thermostat.

B) Rated voltage NOT present, upper thermostat is okay. Go to step 5 below.

C) Lower than rated voltage IS present, recheck for grounded upper element (see page 15).

5. Check across terminals L4 and 2 of lower thermostat (see illustration 12). A) Rated voltage IS present, replace lower thermostat.

Illustration 12

B)Rated voltage NOT present, lower thermostat is okay.

C)Lower than rated voltage IS present, recheck for grounded lower element (see page 15).

Page 18

18

Page 17 Page 19
Page 18
Image 18
Bradford-White Corp M-2-50T6DS service manual Be sure thermo stats are reset to their original
Page 17 Page 19

M-2-50T6DS specifications

Bradford-White Corp is renowned for its commitment to quality and innovation in water heating solutions, and the M-2-50T6DS model exemplifies this philosophy. Designed to meet the needs of both residential and light commercial applications, this 50-gallon gas water heater is engineered for efficiency, reliability, and ease of use.

One of the standout features of the M-2-50T6DS is its high recovery rate, which is achieved through a powerful atmospheric vent design that allows for quick heating of water. The heater’s 40,000 BTU per hour input ensures that there is always a sufficient supply of hot water available when needed. This makes the unit ideal for households with multiple bathrooms or for commercial settings where high hot water demand is common.

The Bradford-White M-2-50T6DS incorporates a state-of-the-art ignition system known as the Direct Spark Ignition (DSI). This technology provides a reliable start-up with minimal energy consumption, enhancing both safety and efficiency. The DSI system reduces the risk of pilot light outages and simplifies the ignition process, making it user-friendly.

In terms of construction, the M-2-50T6DS is built with a robust design featuring a glass-lined tank for superior corrosion resistance. This durable tank is insulated with CFC-free foam, ensuring optimal heat retention and minimizing energy loss. Coupled with the unit's Energy Factor rating, it reflects Bradford-White's dedication to energy efficiency, offering long-term savings on utility bills.

Another notable characteristic is the heater's integrated thermal expansion tank, which helps manage water pressure and reduces damage to your plumbing system, thereby enhancing the overall longevity of both the heater and your home’s plumbing infrastructure.

Safety is a priority with the M-2-50T6DS as well. The model is equipped with a dual-sensor thermostat that monitors the temperature and adjusts accordingly to prevent overheating. Additionally, it features a temperature and pressure relief valve for added safety, ensuring that the unit operates within safe parameters.

In summary, the Bradford-White M-2-50T6DS water heater epitomizes advanced engineering and high performance. With a focus on efficiency, reliability, and safety, this model is an excellent choice for anyone in need of a dependable source of hot water, demonstrating Bradford-White's unwavering commitment to quality in the water heating industry.
Top Page Image Contents