System Bypass, Pump Away Bypass | Smith Cast Iron Boilers GVIOM-5R

Page 10

GV100W BOILER

INSTALLATION & OPERATING INSTRUCTIONS

FIG. NO. 5 Heating System Piping

DISCHARGE PIPE SIZE TO EQUAL VALVE OUTLET. DO NOT RESTRICT FLOW.

SUPPORT DISCHARGE PIPING

SO AS TO AVOID STRAIN ON

THE VALVE BODY.

FOR DISCHARGE

THROUGH ROOF

CONSULT THE

SMITH CO.

1" CLEARANCE MUST BE MAINTAINED BETWEEN HOT WATER PIPING AND COMBUSTIBLE CONSTRUCTION.

DISCHARGE SO AS TO AVOID EXPOSURE OF PERSONS TO HOT LIQUID OR VAPOR. L EAVE OPEN END VI SIBLE FOR PERIODIC INSPECTION FOR SLOW LEAKAGE OR DRIPS.

System Bypass

For systems using a circulator on the return as either a single zone, or multiple zones with zone valves, install a system bypass line between the supply and return on the suction side of the circulator, see FIG. NO. 6. Install a metering valve in this bypass line to regulate the amount of flow that will be diverted to the return. A plug valve offers the best control for this application. Although other valves may be less expensive, a plug valve will be easier to set accurately.

Pump Away Bypass

For systems that use a single circulator to pump away from the boiler, the bypass should be installed on the discharge side of the circulator, see FIG. NO. 7. Full temperature water supplies the baseboard distribution system as before. Half of the circulator’s volume moves through the bypass, blending and heating the cooler return water. Again, the cost of installing the bypass is small and setting it by temperature can be accomplished with a contact thermometer.

In the absence of a flow indicator, set the metering valve using FIG. NO. 7 temperature as a guide. The accompanying diagram suggests

one scenario. This addition requires only two tees, a plug valve, and a small amount of pipe and offers the simplest approach to reliably control condensation. For this system and those that follow, be aware that you are using a percentage of the pump capacity to blend, but the friction loss for the entire pump flow has been reduced. In most cases, the standard pump packaged with the boiler has enough capacity to feed the baseboard distribution system and the bypass line.

FIG. NO. 6

SUPPLY	RETURN
50%		50%
50%		120° F
160° F		120° F
160° F
	50%
100%	160° F	100%
100%		100%
160° F		140° F

	SUPPLY	RETURN
	50%	50%
	50%	120° F
	160° F	120° F
	160° F
		50%
		160° F
	100%	100%
	160° F	140° F

PUMP AWAY

BYPASS

SYSTEM BYPASS

GVIOM-5R specifications

The Smith Cast Iron Boilers GVIOM-5R is a high-efficiency, versatile heating solution designed for both residential and commercial applications. This model is particularly renowned for its robust construction, impressive performance, and energy-saving features. With a focus on durability, the GVIOM-5R is built from high-quality cast iron, which not only ensures longevity but also excellent thermal mass for effective heat retention.

One of the main features of the GVIOM-5R is its fire-tube design, which enhances heat transfer and allows for higher efficiency rates compared to traditional boiler designs. The fire-tube configuration ensures that flue gases travel through a series of tubes submerged in water, maximizing heat exchange and minimizing heat loss. This design contributes to an efficiency rating that often exceeds 85%, helping users to reduce their energy costs while maintaining comfort.

The boiler is equipped with advanced control technology, allowing for precise temperature management. This feature is critical for optimizing performance and ensuring consistent heating throughout the property. Additionally, an integrated diagnostic system enables users to monitor boiler operations and troubleshoot potential issues before they escalate, ensuring reliable performance and reducing downtime.

Another characteristic that sets the GVIOM-5R apart is its flexibility in fuel options. The boiler can operate on various fuels, including natural gas, propane, or oil, making it an adaptable choice for different heating needs. This multi-fuel capability not only provides versatility but also allows property owners to choose the most economical and efficient fuel source based on their specific circumstances.

Maintenance is also simplified with the GVIOM-5R, thanks to its accessible design that allows for easy servicing and parts replacement. The robust construction minimizes the need for frequent repairs, which enhances overall reliability and customer satisfaction.

In summary, the Smith Cast Iron Boilers GVIOM-5R combines durability, efficiency, and versatility. Its innovative fire-tube design, advanced control systems, multi-fuel capabilities, and ease of maintenance make it an outstanding choice for those seeking a reliable heating solution. Whether for a home or a commercial building, the GVIOM-5R stands out as a top-tier option that delivers consistent performance and long-term value.