Service Procedure RE-III

Residential Thermostat Testing

Double Element, Non-Simultaneous,

Three Phase Operation (continued).

Tank Does Not Deliver Enough Hot Water (continued)

WARNING

High voltage exposure. Use caution to avoid

personal injury during this procedure.

7.Check voltage across terminal L1 & L3 of lower thermostat (see illustration 16).

A)Rated voltage NOT present, check wire connection between thermostats.

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

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 & T2 of lower thermostat (see illustration 17).

A)Rated voltage NOT present, recheck ECO (see page 14). If ECO okay, replace lower thermostat.

B) Rated voltage IS present, thermostat is ok. Check wire connection to lower element. If connection okay, recheck lower element (see page 15).

WARNING

Be sure thermostats are reset to their original

temperature settings as found prior to

thermostat testing

Illustration 16

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 13 on page 19).

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 T2 of lower thermostat (see illustration 17). A) Rated voltage IS present, replace lower thermostat.

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

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

Illustration 17

Page 20

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.

Bradford-White Corp M-2-50T6DS service manual Service Procedure RE-III

Models: M-2-50T6DS