Water Plumbing, Pressure Relief Valve

Water Plumbing

Follow local guidelines for the length of the plumbing line in order to ensure that there is enough water pressure for all the fixtures on the line. First, calculate the effective length of the plumbing line by measuring the total length of pipe, and then adding to this 5’ for each elbow or tee in the line. Use the following chart to determine the total number of fixture units on the line, and then compare with the chart at the bottom of this page to find the pipe diameter and water pressure necessary.

Fixture Unit Per Fixture (from UPC)

Plumbing Fixture	Fixture
Description	Unit
Combination Bath / Shower	4
Whirlpool Bath	4
Shower	2
Lavatory	1
Clothes Washer	4
Dishwasher	1.5
Kitchen Sink	1.5

Install with control valves on the inlet and outlet, and use removable unions or connectors to facilitate maintenance or service if necessary.

If the water heater is installed in a closed water system; means shall be provided to control thermal expansion. Contact the water supplier or a local Plumbing Contractor on how to control this situation.

Purge the water line of air, and clean the filter before initial operation.

WARNING: Do not reverse the hot outlet and cold supply line connections to the Flash Water Heater. Make sure the hot and cold lines are connected as in the FOR YOUR SAFETY section at the front of this manual.

Pressure Relief Valve

An approved pressure relief valve must be installed in any installation with this unit. The pressure relief valve must be installed on the hot line out of the unit, with no check valves or control valves between the unit and the relief valve. It is recommended to install the pressure only relief valve 6” inches away from water flow to prolong the life of the Pressure relief valve.

The Pressure only relief valve must be rated for 150 PSI, and have a discharge capacity of 190,000 BTU. Connect the discharge opening of the relief valve to a suitable drain to prevent water damage should discharge occur.

If the pressure relief valve discharges periodically, this may be due to thermal expansion in a closed water supply system. Contact the water supplier or local plumbing contractor on how to correct this situation.

Do not plug the pressure relief valve. The line should have no reduced fittings or other restrictions and should allow for complete drainage of valve and line. The pressure relief valve should be manually operated once a year to check for correct operation.

Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the appliance.

Pipe			Length to the End of Hot Water Line and Recommended Fixture Units
Size	Pressure Range 30 to 45 PSI				Pressure Range 46 to 60 PSI				Pressure Range 60+ PSI
Length	100'	200'	300'	400'	100'	200'	300'	400'	100'	200'	300'	400'
3/4"	3-12	1-6	1-5	0-4	5-17	3-11	2-8	1-6	6-20	4-13	3-10	2-8
1"	12-25	6-17	5-13	4-12	17-36	11-25	8-20	6-18	20-39	13-32	10-26	8-22
1-1/4"	25-48	17-32	13-25	12-21	36-78	25-52	20-39	18-33	39-78	32-74	26-54	22-43

T-K1S specifications

The Whirlpool T-K1S is a cutting-edge tankless water heater designed to provide endless hot water while maximizing energy efficiency. This model is part of Whirlpool's commitment to innovative technology and superior performance, making it a popular choice for both residential and commercial applications.

One of the standout features of the T-K1S is its on-demand heating capability. Unlike traditional water heaters that store hot water in a tank, the T-K1S heats water only when needed. This eliminates the need for a storage tank and reduces the risk of running out of hot water during peak usage times. Homeowners can enjoy continuous hot water, making it ideal for multiple simultaneous uses such as showers, dishwashing, and laundry.

The T-K1S is equipped with advanced technology that optimizes energy use. With its high-efficiency rating, it significantly reduces energy consumption compared to conventional water heaters. The built-in digital scale allows users to set precise temperatures, ensuring comfort while also promoting energy conservation. This feature also helps to minimize the carbon footprint, making the appliance an eco-friendly option.

Safety is a paramount consideration in the design of the T-K1S. It features multiple safety mechanisms, including a robust thermal control system that prevents overheating. The unit also has a built-in safety shut-off mechanism which activates in the event of water flow disruptions, ensuring peace of mind for users.

Another noteworthy characteristic of the T-K1S is its compact design. The space-saving design offers flexibility in installation, allowing it to fit in small or tight spaces, such as utility rooms, basements, or even closets. This feature is especially beneficial for those with limited room for traditional, bulky water heating systems.

Durability is another key aspect of the Whirlpool T-K1S. Constructed with high-quality materials, it is designed to withstand the test of time, minimizing the need for repairs or replacements. Whirlpool also offers excellent warranty options for added security on your investment.

In summary, the Whirlpool T-K1S is an exceptional tankless water heater that combines efficiency, safety, and durability. With its on-demand heating technology, energy-saving features, and compact design, it represents a smart choice for anyone looking to enhance their hot water supply while being environmentally conscious. It embodies Whirlpool's commitment to quality and performance, making it a leading option in the market.