Troubleshooting Guide

Start Up Conditions

Thermal Expansion

NOTE: Expansion tanks are pre-charged with a 40 psi air charge. If the inlet water pressure is higher than 40 psi, the expansion tank’s air pressure must be adjusted to match that pressure, but must not be higher than 80 psi.

Water supply system may, because of such events as high line pressure, frequent cut-offs, and the effects of water hammer have installed devices such as pressure reducing valves, check valves, back flow preventers, etc., to control these types of problems. When these devices are not equipped with an internal by-pass, and no other measures are taken, the devices cause the water system to be closed. As water is heated, it expands (thermal expansion) and closed systems do not allow for the expansion of heated water.

The water within the water heater tank expands as it is heated and increases the pressure of the water system. If the relieving point of water heater’s temperature-pressure relief valve is reached, the valve will relief the excess pressure. The temperature-pressure relief valve is not intended for the constant relief of thermal expansion. This is an unacceptable condition and must be corrected.

It is recommended that any devices installed which could create a closed system have a by-pass and/or the system have an expansion tank or device to relieve the pressure built by thermal expansion. Thermal expansion tanks are available from Sears stores and through the Sears Service Centers. Contact the local plumbing inspector, water supplier and/or the Sears Service Center for assistance in controlling these situations, see Figure 26.

Thermal Expansion Tank Specifications

	Tank	Dimensions		Pipe
Model	Capacity	in Inches		Fitting
Number	In Gallons	Diameter	Length	On Tank
153.331020	2	8 (203 mm)	12-3/4 (323 mm)	3/4” Male
153.331050	5	11 (279 mm)	14-3/4 (375 mm)	3/4” Male

Expansion Tank Sizing Chart

	Inlet*		Water Heater Capacity (Gallons)
	Water
Expansion	Pressure		30	40	50	66	80
Expansion	40psi	2		2	2	5	5
Tank	50psi	2		2	2	5	5
Capacity	60psi	2		2	5	5	5
Needed	70psi	2		2	5	5	5
	80psi	2		5	5	5	5

*Highest recorded inlet water pressure in a 24 hour period or regulated water pressure.

FIGURE26.

Strange Sounds

Possible noises due to expansion and contraction of some metal parts during periods of heat-up and cool-down do not represent harmful or dangerous conditions.

Condensation causes sizzling and popping within the burner area during heating and cooling periods and should be considered normal. See Condensation section.

Draft Hood Operation

Check draft hood operation by performing a worst case depressurization of the building. With all doors and windows closed, and with all air handling equipment and exhaust fans operating such as furnaces, clothes dryers, range hoods and bathroom fans, a match flame should still be drawn into the draft hood of the water heater with its burner firing. If the flame

153.336466 40 GALLON, 153.336162, 153.336262 40 GALLON SHORT, 153.336762 30 GALLON PROPANE (L.P.), 153.336362 30 GALLON specifications

Sears offers a range of propane storage tanks designed to meet various domestic and commercial heating needs. Among the popular models are the 40-gallon propane tank (L.P.) with the model numbers 153.336862 and 153.336466, as well as the 50-gallon tank identified by 153.336566, and the 30-gallon propane tank represented by 153.336762. Each of these tanks incorporates modern technologies and features tailored for efficiency, safety, and convenience.

The 40-gallon propane tank is an excellent choice for homeowners looking to efficiently store fuel for heating applications, cooking, or outdoor entertainment. Its compact design allows for easy installation in smaller spaces while ensuring sufficient fuel capacity for moderate consumption needs. The tank is constructed from high-quality steel, providing durability and resistance against environmental factors, ensuring long-lasting service.

Sears also provides the 50-gallon propane tank for users with higher fuel demand. This model is essential for households with larger heating requirements or for businesses utilizing propane for cooking or heating. The larger capacity reduces the frequency of refills and enhances convenience for users.

On the other hand, the 30-gallon propane tank serves as a reliable option for customers with minimal fuel needs. Whether for heating specific areas or powering smaller outdoor appliances, this model offers ample capacity while remaining manageable in size.

Safety features are paramount in all Sears propane tanks. Each tank is equipped with safety valves that prevent over-pressurization, along with a robust design that minimizes the risk of leaks. These tanks also meet stringent safety standards, ensuring users confidence in their performance.

Additionally, all models feature external brackets for easy installation and securing to a solid foundation, reducing the risk of accidents during use or adverse weather conditions. The tanks are compatible with various propane appliances, ensuring versatility across applications.

In conclusion, Sears provides a selection of propane tanks that combine practicality with advanced safety features. Whether users opt for the 30-gallon, 40-gallon, or 50-gallon models, they can trust in the quality and reliability of Sears propane tanks to efficiently meet their fuel storage needs while maintaining safety as a top priority.