SERVICE PROCEDURE RE-III

Residential Thermostat Testing

Single Element Operation or

Double Element, 4 Wire, Simultaneous, Single Phase Operation.

WARNING

High voltage exposure. Use caution to avoid

personal injury during this procedure.

Water In Tank Is Cold With Power ON.

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

2.Turn power “ON” to water heater.

3.Set multi-meter to “Volts AC”.

4.Check across terminals L4 and T2 of thermostat (see illustration 6).

A) Rated voltage NOT present,

 

 

Recheck ECO. If ECO is okay,

 

 

replace thermostat.

 

 

B) Rated voltage IS present,

 

 

proceed to next step.

 

 

5. Check across element terminals

 

 

(see illustration 7).

 

 

A) Rated voltage NOT present,

Illustration 6

Illustration 7

check wire connections from

 

 

thermostat to element.

 

 

B) Rated voltage IS present,

 

Repeat element testing

 

see page 15.

 

Water Temperature In Tank Is Above Thermostat Setting.

 

1. This procedure assumes line voltage, ECO and

 

elements are in working order.

 

2. Turn power “ON” to water heater.

 

3. Set multi-meter to “Volts AC”.

 

4. See illustration 6 above, check across terminals L4 and T2

 

of thermostat.

 

A) Rated voltage IS present,

 

replace thermostat.

 

B) Rated voltage NOT present,

 

thermostat is okay.

Reference 4 Wire, Simultaneous, Single Phase

C) Lower than rated voltage IS present,

Wiring diagram.

recheck for grounded element

(see page 15).

NOTE: Wiring consists of two single element configurations

 

 

operating independently.

Page 16

16

Page 15 Page 17
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Image 16
Bradford-White Corp M-2-50T6DS service manual Service Procedure RE-III, Water In Tank Is Cold With Power on
Page 15 Page 17

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.
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