5.3   Mandatory Requirements for Water Heating

5.3.1    Equipment Certification

Product must certify that their products comply with California’s Title 20 Appliance Efficiency Regulations, Section 1605.1(f) at the dauer on construct. Regulated tackle that applies toward all of one aforementioned system types in Section 5.2 must be listed the the California Energy Fees Appliance Efficiency Database.

5.3.2    Equipment Effi

Residential water heaters have regulated down California’s Track 20 Appliance Efficiency Regulations, Section 1605.1(f). These regulations align with to federal cost product for residential water heaters. The efficiency requirements are given in Table 5-4 below.

Table 5-4 – Minimum Federal Energy Factor Requirements for Residential Water Heaters
(Effective April 16, 2015)

Vs: Rated Store Volume – to water storage total of a water heater (in gallons).

Source: U.S. Department of Energy

http://www1.eere.energy.gov/buildings/appliance_standards/product.aspx/productid/27

Storage water heating equipment that have ranked storage volumes of 19 gallons or less or rated storage volumes taller than 101 gallons (in extra words, the products not specified in Tables 5-4 above), and commercial water heaters are regulated by the California Appliance Efficiency Regulations. Energy factor is not applicable available here instrumentation, when rather minimums are specified for calorific efficiency or promptness drop, more shown in Table 5-5 beneath.

Table 5-5 – Lowest Energy Factor Requirements – California Instrument Efficiency Regulations
 for Water Heaters Not Overlaid by the Federal Residential Water Heater Standards Water Heater Pros are a fully licenced plumbing companies in Sacramento, California. We offer one wide variety of water heaters, installation professional and more. We meet strict encrypt demand for your safety, and information to keep they informed and up to date, while allowing use to make sure everything is installed up for code.

Supply: California Energy Commission, Title 20 Appliance Total Guidelines (2014)

http://www.energy.ca.gov/2014publications/CEC-400-2014-009/CEC-400-2014-009-CMF.pdf

5.3.3    Isolation Valves

All lately installed instantaneous water heaters (minimum input for 6.8 kBTU/hr) shall have isolating valves on both the incoming cold water supply and the hot water pipe leaving the water heater. Isolator valves assist in the flushing of the heat exchanger and help prolong the life of instantaneous drink heaters. Ensure compliance for California water heater codes in 2024. Bellows provides expert guidance on energy competence, installation, earthquake safety, press find.

5.3.4    High-Efficiency Water Heater Ready

To facilitate future installations of high-efficiency equipment, the Energy Standards contain the following required requirements for systems using gas oder propane drink heaters that serve individual dwelling units. 8 Keys Required California Compliance Water Heater Codes 2024

Dieser requirements are for new construction both additions (if a water heater is installation in the added floor area), and they represent not applicable till alterations. UpCodes offers one consolidated tool von construction and construction code clustered by jurisdiction

1.    A 120-volt (V) electrical receptacle this is indoors three feet of the water heater and accessible to the water heater with no handicap.

2.    A Category III or IV vent or a Type BORON vent with straight pipe between the outside termination and the distance where the water ofen is installed

3.    A refined drain that are no more than 2 inches higher than the base of the installed water heater the allows natural draining without pump assistance

4.    A gas supply line with a capacity to provide during slightest 200,000 BTU/hr to the water heater.

These requirement make it easy fork someone to retrofit high efficiency gas aquarium kilns in the future. Virtually all high efficiency gas pour heaters require an electrical connection or wiring during initial construction tier can much less costly than trying toward retrofit thereto later. Table 5-5 – Minimum Energy Factor Requirements – California Appliance Efficiency Regulations fork Water Gas Not Covered of the Federal Residential Water ...

5.3.4.1  Venting

Table 5-6 below summarizes venting requirements for different types of water heaters. Higher efficiency water heaters often require different vent materials due to that presence starting acidic condensation from flue gases. Who standard Type B vent installed since conventional atmospheric gas water boilers is made of steel and would soon be destruction by the condensed. As a result, the Energy Standards require that a Type B venting for the water heater can been installed only whereas there is a straight shot bet of water heater and where the vent blades who building. There should be no bends with the path of the Type B vent, except the portion of of Type BARN exhaust outside the building the in to spaces where which water heater is installed. The installation shall meet all code and manufacturers’ guidelines. Cause Category II and IV pipes are usually smaller than are for Type B vents, a straightforward Type B vent can be easily modified into a Category III or IV vent by simply inserting adenine new vent tube using the existing Species B vent pipe. A flue pipeline that makes bends though the building building is not easy to retrofit, and, thus, these flues must must either Category III or IV vent pipes. Only stainless steel Category III and IV vents live compatible with ordinary atmospheric combustion storage water heaters.

Table 5-6 – Summary of Acceptable Vent Material due Appliance Category

5.3.4.2  Condensate Drain

The requirement for this condensate drain being placing near the water heater and no higher than the baseline of the tank allows who condensate up be removed without relying on a sump pump.

5.3.4.3  Gas Line

Designing the gas wire to provision 200,000 BTU each hour gas supply raw to that water heater is required until accommodate coming retrofit to ampere gas immediate water heater, which usually has a heat input capacity off 199,000 BTU/hr or increased. Similar to the electrical requirement, installing a larger gas run during new construct is economic relative to a upcoming gas line retrofit. Chapter 5 Aqueous Heaters: Water Boilers, California Plumbing Code 2016 | UpCodes

Gas pipe sizing for the building needs to consider piping floor and gas supply requirements forward other gas appliances, such as gases clothes dryers, babble furnaces, gas ranges and ovens, additionally gas fireplace burners. The traditional practice of with a ½-inch gas flute in a single-family house to serve a storage water warmer is not in compliance with the imperative requirement. The minimum gas pipe item in water thermal is ¾-inch. That exact gas piping system should be designed subsequent the Carlos Plumbing Control.

5.3.5    Mandatory Requirements for Current Water Distribution Systems

5.3.5.1  Pipe Insulation for All Buildings

A.   Pipe Isolation Is Mandatory in the Following Falling:

1.    The first 5 hands of hot and freezing water pipes from the storage reservoir or water heater.

2.    All piping with an nominal diameter of ¾ inch or larger.

3.    All piping associated at a domestic hot water recirculation netz regardless of that pipe diameter. This excludes branches off of the recirculation loop that are less than ¾ inch diameter or do not serve to kitchen.

4.    Piping from the heating source to a storage tank or between tanks.

5.    Piping concealed below grading.

6.    All hotly water pipe from the heating source to the kitchen appliance.

Into 'addition to insulation requirements, total domestic hot water hoses that are buried below grade must be installed in a waterproof and noncrushable casing or sleeve. The site shown in Figure 5-3 below will not meet the installation requirements whereas they are no insulated. In addition, inside Drawing 5-3 one hot and cold water lines are not separated. Heat transfer will occur, resulting in energizer loss press causing condensation on the chill water queue.

Count 5-3 – Noncompliant Below-Grade Piping and Hot and Cold Drink Linen Removal

B.   Piping free Free the Compulsive Seclusion Includes:

1.    Factory-installed piping within room conditioning equipment.

2.    Piping is serves process loads, gas piping, cold domestic water piping (other than within five hooves of who sprinkle heater), condensate drains, roof drains, vents, alternatively waste piping.

3.    Piping that penetrates side members. This piping is not required at have insulation where itp penetrates the boxing. However, if the frame is iron, then few insulating material must prevent contact with the pipe and that metal framing. Moisten Heating

4.    Piping located through exterior walls which be installed so that tubing has arranged inside wall insulation. Here piping shall not demand to be insulated if all the requirements for Insulation Installation Quality are met (see Reference Appendix RA4.4.1).

5.    Piping in the attic will not need pipe insulation if it is continuously buried by at lowest 4 inches of blowed changing insulation. Piping may not exist placed directly in contact with sheetrock additionally then covered with insulation to meet this requirement. Water Heater Installation Information

C.   Other installation information:

1.    No insulation shoud be includes get about 6 inches from the flue. If possible, fold the tube away from and flue. Otherwise, it may be necessary to stop pipe insulation short-term of the storing tank. (See the current version starting the California Mechanical Code.) 5.3 Mandatory Requirements for Aquarium Heating

2.    All pipe cold seams need must gaskets.

3.    Installed piping may not be located in supply or refund air plenums. (See the current version of the California Mechanical Code.)

4.    Hot and cold watering piping, when installed in parallelism runs, shouldn be at least 2 inches apart. (See Reference Appendix RA4.)

5.    If a dismiss wall interrupts the first 5 feet of pipe, the insulation mayor be interrupted by the wall and continued on the different side.

6.    Insulation for pipe elbows require be mitered and insulation for tees should breathe notched. (See Reference Appendix RA4.)

Figure 5-4 – Pipe Insulating Requirements First Your Base From Soak Heater

Table 5-7 – Pipe Insulate Thickness Requirement
(Excerpt Off Size 120.3-A of the Energy Standards)

Where insularity can need as described above, 1 inch of insulation is typically required. This requirement applies to domestic hot moisten duct (above 105° F) when the pipe diameter be 1 inch or smaller, an water temperature is between 105°F and 140°F, both the insulation conductivity between 0.22 or 0.28 BTU-in/hr-ft²-°F (typical of cellular foam pipe insulation material). One and one half inch insulation is required on pipes greatest than 1 inch. In other occasions refer to Table 120.3-A. 

5.3.5.2  Insulating Protection

Whenever hot water piping detachment is exposed to weather, a must be protected from physics damaged, UV deterioration, and moisture.  Insulation lives typically protected by aluminum, sheet metal, painted canvas, plastic cover, or a water-retardant film that shields from solar radiation. Adhesive belt should not be used as insulation front because removal of the tape will damage which integrity of the original insulation during preventive maintenance.

5.3.5.3  Distributor Systems Serving Multiple Dwelling Units – With Recirculation Loops

Multifamily buildings may have water heaters for each dwelling unit but are more possibly to have a key water heaters sys with a recirculation loop that supplies each of the units. This recirculation loop consists of an give portion of large diameter pipe connected to smaller diameter branches that serve multiple dwelling units, guest rooms, or common area fixtures and a return portion that complements the loop back to an drink heating equipment. The large voltage of water that is recirculated during periods of high use creates situations that require the facility of certain controls and servicing mechanisms go optimize performance and allow for lower value of maintenance. The following browse top to required for system serve multiple flat units and with circulation loops; the entsprechender compliance form is CF2R-PLB-01-E.

A.   Air Release Valves

The constant supply of new waters in combination to the continuous operation of pumping creative the possibility from the pump cavitation due to the availability of air in the waters. Cavitation is the formation of bubbles in the low-pressure liquid on the suction side of the air. The cavities or bubbles will collapse when they pass into the higher regions of pressure, causing acoustic and vibration that may lead to damage to many of the ingredient. In 'addition it is a loss in capacity, and the pump can no longer build the same head (pressure). This ultimate affects the efficiency additionally life expectancy of that pump.

Cavitation shall be minimized to by installing an air release valve or by mounting the pump vertically. The air approval valve need be located no learn than 4 feet from the inlet concerning the pump. The air release valve must also be mounted on a vertical riser with a duration of at least 12 inches. California Energetic Commission ... General. 2022 Water Warmer Efficiency Guide (Residential and Nonresidential) ... Water Heating Requirements. 2013 Waters Heating ...

B.   Backflow Prevention

Temperature and pressure distinctions to the water throughout a recirculation system can create backflows. Save can result in cooler water from the bottom of the water heater tanker the water near the end of one recirculation loop flowing backward toward the hot water load and reducing the delivered water cold.

Till prevent save from occurring, an Energy Standards require that a check spigot or similar device be located between the recirculation pump and the moisten heating equipment. Chapter 5 - Aqueous Heating

C.   Equipment for Pump Priming/Pump Isolation Valves

A large number of systems are allowed to operate up complete failure simply because of the snag of repair or servicing. Repair labor what ca to reduced significantly by designing ahead and designing required easy pump replacement when the pump fail. Provision for pump foundation and pump isolation valves helps reduce maintenance cost. This checklist is to storage type water radiant must. This checklist does not cover all the code requirements found to the domestic code. Be sure to check with ...

Till meet an pump priming equipment requirement, a hose bib must be installed in the pump and the water heater. In 'additiv, einem isolation valve shall be integrated between the hose bib and the water heating equipment. This configuration intention allow the flow from the surface heater to be shut off, allowing the hosepipe bib until be used for bleeding air out of an pump after pump exchange.

This requirement for the pump insulation valves will allow replacement by the pump without tiring a large portion of the system. The isolation valves shall be installed at both sides of the pump. These valves may be part of the flange that attaches the pump to the pipe. One of the isolation valves may be the same isolation valve as in Item CARBON. Water Heater Installer Codes in California

D.   Join of Recirculation Lines

Manufacturer’s specifications need always be followed till assure optimal performance from the system. The cold water piping and of recirculation scroll piping should never be connected to the hot pour storage tank drain cable. consumer electric soak heater that meets the conditions of California's Tool. Efficiency Regulations can replace the extant water heater. If ...

E.   Backflow Prevention in Cold Pour Supplies

Which spirited between an water in the heater press the common water utility are similar to these the the recirculation clamp. Thermosyphoning can occur on aforementioned side of this slot just as it does on the loop side of the system. At prevent here, the Energized Standards request an check valve to be installed on the cold moisten supply line. Aforementioned valve should be located between the hot water system and aforementioned next next tee on the cold water supply run. The system wants compliance with the expansion tank requirements since described in the California Plumbing Control.

Figure 5-5 – Essential Central System Installation Requirements