X Control System Wiring

WARNING

All wiring and grounding must be done in accordance with the authority having jurisdiction or, in the absence of such requirements, with the National Electrical Code (ANSI/NFPA 70).

1)Provide the boiler with a dedicated branch circuit with a fused disconnect. The minimum rating of this circuit must be 15A.

2)Locate the supplied wire harnesses and wire the boiler following the appropriate wiring diagram in Figures 21 or 22. Use 14 gauge wire for all 120 volt wiring to circulators, low water cut-offs and auxiliary manual reset hi limits switches supplied by others. The junction box located on the inside right side jacket panel is to become the hub for all limit and low water cut-off wiring. All 120 volt boiler wiring must be enclosed in conduit.

3)Make sure that all single pole switches and safety controls supplied by others are in the “hot” (ungrounded) side of the circuit.

4)If a LWCO and or manual reset limit are used, wire them so that they break the 120 volt “Hot” connection to the boiler. Do not install these devices in the 24 volt factory wiring.

5)When wiring the optional vent damper attach the quick connect end of the supplied wire harness to the mounting bracket on the vent and plug the quick connect into the receptacle on the vent damper. Attach the BX cable connector located on the other end of the harness to one of the knockouts on the jacket top panel. Remove the factory installed jumper plug from the vent damper receptacle located in the vestibule and insert the plug from the vent damper harness into the vent damper receptacle. Cut the jumper wire on the jumper plug and discard it.

DANGER

Do not attempt to reuse the jumper plug on boilers installed with vent dampers. Flue gas spillage can occur resulting in severe injury or death.

6)The 24 volt “thermostat / operating control” shown in Figures 21 and 22 is not supplied. It is the control that turns the boiler on in response to a call for heat. Follow the thermostat / operating control instructions for placement and wiring. Provide Class II circuit between the thermostat / operating control and the boiler. Wire the thermostat or operating control across terminals ‘G’ and ‘R’ on the Honeywell 8285D Control Center as shown in Figures 21 and 22. Set the heat anticipator on the thermostat to match the setting listed on the ignition control.

7)Attach the line voltage or “hot” side of the circulator motor supplied by others to the yellow wire from terminal

3 on the R8222U relay located on the Honeywell R8285D Control Center. Attach the neutral side of the circulator tothe common leads in the junction box and ground as required by the circulator manufacturer. See Figures 21 and 22 for details.

Sequence of Operation – Vent Damper (If Used)

1)The vent damper is continuously powered at terminal 1.

2)On a call for heat, the damper relay coil is energized through terminal 2 if all the limits ahead of the damper are satisfied.

3)The relay coil closes contacts which energize the damper motor, causing the damper to open.

4)When the damper blade reaches the fully open position, power is sent back to the ignition circuit through terminal 3 and the damper motor is de-energized.

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Crown Boiler 16-325 500506 manual Control System Wiring, Sequence of Operation Vent Damper If Used, 2826
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16-325 500506 specifications

The Crown Boiler 16-325 500506 is a highly reliable heating solution designed for residential and light commercial applications. Known for its robust construction and advanced technologies, this boiler is engineered to deliver efficient heating while ensuring longevity and minimal maintenance.

One of the standout features of the Crown Boiler 16-325 is its durable steel construction, which is essential for handling the high temperatures and pressures involved in heating systems. The boiler is typically equipped with a cast iron heat exchanger, known for its excellent heat retention and distribution capabilities. This ensures that the system heats up quickly and maintains consistent temperatures throughout the space.

The boiler's capacity to produce 325,000 BTUs makes it suitable for larger homes or commercial buildings with significant heating demands. Its high input capacity allows for effective operation in areas where traditional systems may struggle to keep up with heating requirements. The Crown Boiler 16-325 employs a forced hot water system, which circulates water through pipes and radiators, providing uniform heat and comfort in indoor spaces.

A significant technological advancement in this model is its integrated control system. The advanced control module automates burner operation, ensuring optimal performance while minimizing energy consumption. This technology not only enhances efficiency but also helps in reducing operational costs, making it a cost-effective choice for users.

Moreover, the Crown Boiler 16-325 is designed with ease of installation and maintenance in mind. It features convenient access panels that simplify the maintenance process, allowing technicians to perform service checks and repairs without extensive downtime. This attribute is particularly beneficial for property managers or homeowners looking for a hassle-free heating solution.

In terms of safety features, the boiler is equipped with a pressure relief valve and a low-water cutoff switch, ensuring safe operation while protecting against potential hazards associated with overheating or lack of water.

Overall, the Crown Boiler 16-325 500506 is a powerful and efficient heating solution that excels in durability and performance. With its advanced technologies, substantial heating capacity, and user-friendly design, it represents an excellent choice for those seeking a reliable heating system that combines efficiency with long-term operational savings.
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