VII Venting

Refer to installation manual. Vent sizing for the 32-380ECS should always be done in accordance with the National Fuel Gas Code.

A vent damper can be installed on any 32-380ECS or 32-475ECS equipped with a 24 volt control system except for those with tankless heaters. If a vent damper is installed, the following components are required:

•Effikal Model GVD-12 Vent Damper: Crown PN 96-038

•Damper Harness (Steam Boilers): Crown PN 9601300

•Damper Harness (Water Boilers): Crown PN 9601550

To install the damper:

1)Open vent damper carton and remove installation instructions. Read the instructions thoroughly before proceeding. Verify that vent damper is same size as draft diverter outlet (12”). Unpack vent damper carefully. Do not force closed damper blade. Forcing vent damper closed may result in damaged gear train.

2)Vent damper is factory shipped having approximately ¾” diameter hole in the vent damper blade, which must be left open even though this boiler is equipped with an intermittent ignition system.

3)Mount the vent damper on the flue collar without modification to either and secure with sheet metal screws. Make

sure screws do not interfere with damper blade operation. Vent damper blade position indicator must be visible to users. Maintain at least 6 inches between the vent damper device and combustible construction. Also make sure that there is adequate access to the vent damper for servicing. Figures D and F in the Wiring section show typical damper orientation.

4)Install vent connector pipe and vent fittings from vent damper outlet to chimney or gas vent. Secure with sheet metal screws and support as required.

WARNING

Install the vent damper directly on top of the boiler so that it is servicing only the boiler.

5) See the Wiring section of this supplement for instructions on making damper electrical connections.

VIII Steam Boiler Piping and Trim Installation

Refer to installation manual. The #67 low water cut-off (LWCO) cannot be used as the primary (operating) LWCO on the 380ECS or 475ECS. Instead, a Hydrolevel CG400 is installed in tapping “G” (Figure 22). A #67 LWCO can be used as a redundant LWCO (with or without manual reset) in tappings “E” along with the level glass. The CG400 supplied with this boiler uses the same flangeless probe, and is mounted on the boiler in the same manner, as the CG450 described in the installation manual at the top of page 28. Install the 32-380ECS near boiler piping in accordance with that shown for the 32-475 in Figure 27a in the installation manual.

IX Water Boiler Piping

Refer to installation manual. Boilers covered by this supplement which are not equipped with a tankless heater are supplied with a Honeywell L8148E limit control installed in Tapping “C” (Figure 29) using the 1/2” well and 1/2 x 1-1/2” bushing supplied. Boilers equipped with a tankless heater are supplied with a Honeywell L8124E, which is installed using a 3/4” well in the tankless heater. The L4006A shown in the installation manual is not used.

X Gas Piping - Refer to installation manual

32-380ECS, 32-475ECS specifications

Crown Boiler is renowned for its innovative and reliable heating solutions, and its models 32-475ECS and 32-380ECS are prime examples of the company’s commitment to performance and efficiency. These residential and light commercial steam boilers are designed to deliver warmth and comfort while minimizing energy consumption, all within a robust and durable framework.

One of the standout features of the Crown Boiler 32-475ECS and 32-380ECS is their adaptability to various heating applications. These boilers are sized appropriately for numerous residential settings, providing heating solutions for homes of different dimensions and layouts. Their large heating capacities, rated at 475,000 BTUs/hour for the 32-475ECS and 380,000 BTUs/hour for the 32-380ECS, are suitable for larger spaces or buildings requiring significant heat output.

Both models utilize a fire-tube design, which promotes efficient heat transfer and helps conserve fuel. This design leads to improved thermal efficiency compared to traditional designs, making them an environmentally-friendly choice for homeowners concerned about carbon footprints. Additionally, the units feature advanced natural gas burners that enhance combustion efficiency, ensuring that less fuel is consumed to achieve the desired heating level.

The Crown Boiler models also come equipped with various safety features, including a pressure relief valve and low water cutoff, which help to ensure safe and reliable operation during the boiler's lifecycle. The combination of these safety mechanisms with robust construction materials ensures long-lasting performance even under demanding conditions.

Furthermore, the 32-475ECS and 32-380ECS are designed for ease of installation and maintenance. They feature a user-friendly control system, allowing homeowners and technicians to monitor performance and make necessary adjustments easily. The serviceability of these units is enhanced by their compact design, which can save space in mechanical rooms and facilitate troubleshooting.

In summary, the Crown Boiler 32-475ECS and 32-380ECS represent an exceptional choice for those seeking efficient, reliable, and safe heating solutions. With their powerful heating capacities, advanced technology, and thoughtful design, these models exemplify Crown Boiler's dedication to quality and innovation in the heating industry. Whether for residential or light commercial use, these boilers provide the performance and efficiency that modern buildings demand.