NOTE: Minimum 18 AWG, 105°C, stranded wire must be used for all low voltage (less than 30 volts) external connections to the unit. Solid conductors should not be used because they can cause excessive tension on contact points. Install conduit as appropriate. All high voltage wires must be the same size (105°C, stranded wire) as the ones on the unit or larger.

BLACK CIRCUIT

BREAKER

WHITE

GREEN

GROUND

A B C

Fig. 18: Wiring Connections

Check the power source:

AC = 108 VAC Minimum, 132 VAC MAX AB = 108 VAC Minimum, 132 VAC MAX BC = <1 VAC Maximum

prior to working with any electrical connections or components.

3.Observe proper wire colors while making electri- cal connections. Many electronic controls are polarity sensitive. Components damaged by improper electrical installation are not covered by warranty.

4.Provide overload protection and a disconnect means for equipment serviceability as required by local and state code.

5.Install heater controls, thermostats, or building management systems in accordance with the applicable manufacturers’ instructions.

6.Conduit should not be used as the earth ground.

NOTE: A grounding electrode conductor shall be used to connect the equipment grounding conductors, the equipment enclosures, and the grounded service conductor to the grounding electrode.

Field Wiring Connection

Fig. 19: Multi-meter

If the heater does not have a factory-wired stage con- troller, it is factory-wired in an on-off configuration with other stage terminals jumpered.

To field-connect a stage controller, remove factory- installed jumpers and wire stage controller as shown in Fig. 21-24.

Making the Electrical Connections

Refer to Fig. 18-26.

1.Verify that circuit breaker is properly sized by referring to heater rating plate. A dedicated circuit breaker should be provided.

2.Turn off all power to the heater. Verify that power has been turned off by testing with a multi-meter

Fig. 20: Wiring Location

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause im- proper and dangerous operation. Verify proper operation after servicing.

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Raypak 992B manual Field Wiring Connection, Making the Electrical Connections
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992B specifications

The Raypak 992B is a highly regarded commercial boiler known for its efficiency and reliability in heating applications. Designed for a range of installations, it is particularly favored in schools, hotels, and various commercial settings where dependable heating is crucial. One of the standout features of the Raypak 992B is its impressive thermal efficiency rating, often exceeding 90%. This efficiency translates into lower energy costs and reduced environmental impact, making it a smart choice for eco-conscious businesses.

The Raypak 992B comes equipped with advanced technologies that enhance performance and ease of use. Among these technologies is the high-precision digital control system, which allows for accurate temperature regulation and monitoring. This feature ensures optimal performance and minimizes energy waste, further contributing to the unit's cost-effectiveness. The boiler also utilizes a modulating burner system, enabling it to adjust flame size based on real-time heating demands. This adaptability not only enhances efficiency but also improves overall comfort within a facility.

Another significant characteristic of the Raypak 992B is its robust construction. Built with durable materials designed to withstand demanding operating conditions, this boiler is engineered for long-lasting performance. Its compact design is an added benefit, facilitating installation in areas with limited space. The unit is also equipped with a stainless steel heat exchanger, which provides superior resistance to corrosion and enhances heat transfer efficiency.

Safety features are also paramount in the design of the Raypak 992B. The boiler includes multiple safety controls and alarms to prevent overheating and maintain safe operating conditions. This diligence in safety ensures peace of mind for operators and reduces the risk of unexpected downtime.

In summary, the Raypak 992B stands out as a top choice for commercial heating solutions, combining high efficiency, advanced technology, and rugged construction. Its features cater to a wide range of heating needs while prioritizing safety and economy. With its impressive performance capabilities, the Raypak 992B continues to be a reliable partner for facilities seeking optimal heating solutions.
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