The work of a system with an active electrical source can result in serious injuries or even fatalities. Be sure the electricity has been turned off with the aid of a voltmeter prior to disconnecting any water pipes.
Utilize flexible connectors and compression fittings to connect pipes. Soldering is not necessary. Install a temperature/pressure relief valve and discharge line per the instructions of the manufacturer and the local code.
Electricity
Electrical work is risky and requires great care and experience. Most electrical work must be completed through an electrician. Heating installations also involve work with high voltages, which can cause serious injury in the event of a mishap.
Installers will need a diverse selection of supplies and equipment for installing a heater. The thermostat and the heater are the primary components, but additional items like drywall screws, a circular saw and a blade for drywall, electrical tape and pliers are additionally required. Professional installers are expected to finish the whole process in about 4 to 8 hours.
Nichrome wire comes with its resistance rated at an exact number in inches per foot. Divide the circumference of each strand by the number, adding the gauge of the Nichrome for the smallest wire length that is able to be cut. The wire's minimum length permits enough flow of current to warm the wire without it overheating.
Terminals are used to connect the nickelrome and copper wires. Most electrical ring terminals can be adequate, and the connections are made by twisting two wires before putting them into the terminal. Wire insulation is able to be melted by solder and therefore it's not recommended.
Heat shrink tubing should then be applied to the copper connectors, preventing the electrical contact. The tubing is to be installed with the application tool provided by the manufacturer of the heater. To ensure safety for the system the most important thing to do is safeguard the factory splice that connects the probe to the lead wire. Placing this splice inside an unprotected conduit or in an exterior wall may cause interference between the wires, which could impact the accuracy of the temperature.
Ventilation
Ventilation install heater is one of the most important element of heating installation as water heaters that are powered by gas require a natural draft to draw carbon monoxide to the flue. The fumes could be dangerous because they are contaminated with carbon monoxide, can leak into your home if you do not have a proper draft.
Venting for the garage heater should be designed according to local plumbing codes and manufacturers' instructions, and other specifications. It is not possible to, for instance use the same venting system as another device that's powered by electricity. You should not also install an electric-vent water heating system within an attic.
A properly installed venting system should have a minimum of the length of two feet in straight pipes between the vent flange of your garage heater, and the vent cap on top of your roof. If you're unsure of the right size or procedure for your specific situation ask a certified installer. Venting systems must have a minimum of 12 inches of vertical rise prior to when the 90-degree turn and must be fitted with a metal chimney flashing. This water heater powered by natural gas has not been properly vented. There is no vertical rise and chimney height is required to allow for a suitable draft.
Controls
Power control circuits are part of the controls used for heating installations. They regulate the flow of power to the heater component. The circuit is connected to the heater with wires that transport current from the fuse box or fuse panel to the sequencer, and finally onto the relays and switches to control the heating elements. Before disconnecting any of these circuits, use a multi-tester using the ohms settings to make sure that there is no flow of current over the wires. It should read zero OHMs. Loosen the screws and take the wires off.
The silicon-controlled rectifier (SCR) comprises two diodes that can switch all currents in the load. The first diode permits the transmission of positive AC sine waves, while it blocks negative sine waves. The timing relays within the sequencer could be set to energize the elements for several cycles in between or several complete or partial cycles.
Alternately, the SCRs may be programmed for the elements to conduct for all or only half of each cycle, according to the necessity to deal with issues like inadequate power quality or decreased time to run. This approach is referred to as Phase-angle firing.