External Lights

Light

Color

Indication

 

 

 

Power

Blue

Main power is on

 

 

 

Call For Heat

Yellow

Thermostat is closed

 

 

 

Safety

Red

One or more safeties is inopera-

tive

 

 

 

 

 

Ignition

Red

Ignition module is inoperative

 

 

 

Flow

Green

Flow is present

 

 

 

Blower 1

Green

Blower 1 is on

 

 

 

Blower 2

Green

Blower 2 is on

 

 

 

Blower 3

Green

Blower 3 is on

 

 

 

Stage 1

Green

Stage 1 is on

 

 

 

Stage 2

Green

Stage 2 is on

 

 

 

Stage 3

Green

Stage 3 is on

 

 

 

Stage 4

Green

Stage 4 is on

 

 

 

Table M: Status LED Indicators

24.Power is also sent from pin 2 of the stage 1 con- nection to pin P1-3 of the universal diagnostic board.

25.Power is now sent to terminal TP4 of the Economaster II to energize the relay and close the contacts.

26.Power is waiting at the common terminal of the flow switch waiting for closure and sufficient water flow.

27.The heater pump is energized upon relay closure of the Economaster II.

28.Upon sufficient flow from the heater pump, the flow switch contacts will close.

29.If there is insufficient flow and the flow switch does not close, a 24 VAC signal is sent to the Universal Diagnostics Board to indicate the fault.

30.The flow light is energized; located on the front status panel.

31.A 24 VAC signal is also sent to the “TH” terminal located on the ignition module.

32.Once the 24 VAC “TH” signal is received at the ignition module, the internal contacts between F1 and F2 close sending a 120 VAC signal to the 120 VAC pilot duty terminals, located at J14 on the cir- cuit board.

33.The 120 VAC signal continues to the coil of the blower relay K-3 (N.O.).

34.The 120 VAC signal continues to the 120 VAC safety terminals located at J13 on the circuit board.

35.When the coil on relay K-3 is powered, the N.O. relay contacts close and energize the blowers from the J8 connections on the CPW board.

36.After proper air pressure is received in the air plenum, the air pressure switches will close.

37.If there is insufficient air pressure and the air pres- sure switches do not close, a 24 VAC signal is sent to the Universal Diagnostics Board to indicate the fault.

38.A 24 VAC signal is now sent to the blower LED on the status board.

39.Power is applied to the optional equipment inter- lock connection (normally jumpered).

40.The 24 VAC signal is then sent to the 24 VAC safe- ty connector.

41.24 VAC is now sent to the pressure switch (P.S.) terminal on the ignition module.

42.Once the pressure switch signal is received at the ignition module, the heater performs a 15-second pre-purge, and then the hot surface igniter is ener-

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Raypak 992B manual External Lights Color Indication
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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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