Lochinvar 5 operation manual Protection features

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10 Operating information

Gradient limiting

If during operation of the boiler the outlet water temperature is rising too quickly, the control will reduce the firing rate to its lowest setting.

Outdoor air reset

If an outdoor air sensor is connected, the control module will calculate the set point based on the programmed reset curve. The installer can change the slope of the reset curve by several adjustable parameters. The user can limit the maximum set point for the system using the space heating set point.

Boost function

If outdoor air reset is active, and a space heating demand has been active continuously for a set period of time (time adjustable by installer) and there has been no HW demands, the control will increase the set point by a fixed number of degrees (adjustable by installer). This process will continue until the space heating demand ends, the set point reaches the programmed set point or a maximum of 20 increases has occurred. Once the system heat demand is satisfied, the set point will revert to the value determined by the reset curve.

Night setback

The controller may be programmed to reduce the space heating set point during a certain time each day. A start and stop time can be programmed for each day of the week.

Flame current support

To prevent nuisance shutdowns when the boiler is firing at minimum rates, the control will increase the firing rate when the flame signal drops too low.

Installation & Operation Manual

Protection features

Outlet temperature, flue temperature, and temperature rise limiting

The outlet temperature is monitored by the boiler outlet temperature sensor. When the outlet temperature exceeds 185°F (85°C), the unit will reduce the fan speed. If the outlet water temperature exceeds 195°F (90°C) the control will shut the unit down until it cools off.

The control module monitors the flue temperature by a sensor located in the flue exhaust. If the flue temperature exceeds 215°F (102°C) the control will reduce the maximum fan speed. If the flue temperature exceeds 240°F (115°C) the control will shut the unit down. The unit will restart automatically once the flue temperature drops 25°F (14°C) and the minimum off time has expired.

The control monitors the temperature difference between the inlet and the outlet sensor. If this difference exceeds 55°F (31°C) the control will reduce the fan speed. If the temperature difference exceeds 60°F (33°C) the control will shut the unit down. The unit will restart automatically once the temperature difference has dropped below 55°F (31°C) and the minimum off time has expired.

Freeze protection

DO NOT install the boiler in a room likely to freeze.

The following integral feature of the SMART TOUCH control module provides some protection for the boiler only -- not for the system.

•The SMART TOUCH control module provides freeze-up protection as follows when the boiler water temperature drops below 45°F (7°C):

•Below 45°F (7°C), the boiler and system pumps operate constantly.

•Below 37°F (3°C), the boiler turns on.

•Boiler and pumps turn off if boiler water temperature rises above 45°F (7°C).

￿ CAUTION

This feature of the SMART TOUCH control

module does not eliminate the possibility

 

 

of freezing. The installation must still

 

use recognized design, installation and

 

maintenance practice to prevent freeze

 

potential for the boiler and system.

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Contents Save this manual for future reference Contents When servicing boiler Please read before proceedingSync How it works BlowersModels 1.0 1.3 Ratings SyncDetermine boiler location Installation must comply withCloset and alcove installations Before locating the boiler, check1Closet Installation Minimum Required Clearances Flooring and foundation Provide air openings to roomPrevent combustion air contamination Areas likely to have contaminants When using an existing vent system to install a new boilerProducts to avoid When removing a boiler from existing common vent system Remove boiler from wood pallet5Combustion Air Through Ducts Minimum Recommended Combustion AIR Supply to Equipment Room Direct venting options Vertical Vent General ventingDirect venting options Sidewall Vent Install vent and combustion air piping Air intake/vent connectionsRequirements for installation in Canada SizingMaterials Air inlet pipe materialsOptional room air Vent fittings Material StandardVent pipe PrimerPolypropylene Centrotherm InnoFlue SW Duravent PolyproStainless steel vent Supplied with the vent systemDetermine location Sidewall direct ventingVent/air termination sidewall 2B Alternate Clearance to Gravity Air Inlets Prepare wall penetrations Found in this manualPrepare wall penetrations Alternate Field Supplied Options Multiple vent/air terminationsPrepare roof penetrations Vertical direct ventingVent/air termination vertical 3Vertical Terminations with Multiple Boilers Hydronic piping Near boiler piping connections Circulator sizingHot Water Generator pump sizing ExampleNear boiler piping components 5Single Boiler Primary/Secondary Piping Model Number of Units Manifold Pipe Sizes in Inches mm Connecting gas supply piping Gas connectionsNatural gas Propane GasGAS Piping Size Chart Check inlet gas supplyGas valve replacement Gas PressureLine voltage connections Field wiringInstallation must comply with Louver proving switch EnableOutdoor temperature sensor Flow switch field suppliedBoiler management system System supply sensor Wiring of the cascadeAlarm contacts Runtime contacts3Low Voltage Field Wiring Connections Condensate disposal Condensate drainCheck/control water chemistry Freeze protection when usedStart-up Fill and test water systemInspect/fill condensate system Check for gas leaksCheck thermostat circuits Inspect/check condensate lines and fittingsIf boiler does not start correctly Final checks before starting the boilerStart the boiler Check system and boilerFor Your Safety Read Before Operating Set space heating operation Natural Gas PropaneConfiguration of the cascade Set Hot Water Generator HW operationOperating information GeneralProtection features Cascade Boiler temperature regulationOutdoor reset operation, if used Night Setback operation with cascade Sequence of the cascadeHW operation with cascade Sequence of operation Sync control module 1Status ScreenOperating information 2Main Menu Screen Owner maintenance Maintenance Maintenance and annual startupService technician See the Sync User’s Information Manual for InstructionsMaintenance Check expansion tank Flue vent system and air pipingCheck water system Check boiler relief valveCheck control settings Check ignition ground wiringCheck all boiler wiring Check flame signalCleaning boiler heat exchanger Model Kit Part Component Number DescriptionHandling ceramic fiber materials Niosh stated First AidDiagrams LOW Voltage 120 VAC High Voltage2Ladder DiagramPart 3Wiring Diagram Page
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5 specifications

Lochinvar 5 is a cutting-edge residential boiler designed to meet the heating needs of modern homes while ensuring high efficiency and user convenience. As one of the latest offerings from Lochinvar, a trusted name in the heating industry, the Lochinvar 5 combines advanced technology with robust features that make it a top choice for homeowners and contractors alike.

One of the standout characteristics of the Lochinvar 5 is its impressive energy efficiency. It boasts an AFUE (Annual Fuel Utilization Efficiency) rating of up to 95%, which significantly reduces fuel consumption compared to traditional heating systems. This not only translates to lower energy bills for homeowners but also minimizes the environmental impact, aligning with the growing demand for sustainable energy solutions.

The Lochinvar 5 employs a highly efficient modulating burner technology that optimizes fuel usage based on real-time heating demand. This ensures that the boiler operates at peak efficiency, providing consistent warmth without unnecessary energy waste. The inclusion of advanced controls further enhances its performance, allowing users to adjust settings easily and monitor usage through a user-friendly digital display.

Durability and reliability are also paramount in the design of the Lochinvar 5. Constructed with high-quality materials, this boiler is built to withstand the rigors of daily use and provide long-lasting performance. Its compact design allows for flexible installation options, making it suitable for various residential settings, even where space is limited.

In addition to its impressive performance metrics, Lochinvar 5 is equipped with smart technology features that cater to the needs of modern consumers. Wi-Fi connectivity enables remote monitoring and control via a mobile app, giving homeowners the ability to adjust settings on the go. This feature not only enhances user convenience but also allows for proactive maintenance and alerts, helping to prevent potential issues before they arise.

Safety is a key consideration in the design of Lochinvar 5. It includes multiple safety features, such as a sealed combustion system that minimizes the risk of carbon monoxide leaks and an advanced monitoring system that ensures optimal operating conditions at all times.

In conclusion, the Lochinvar 5 stands out as an exceptional choice for those seeking a reliable, efficient, and smart residential heating solution. Its combination of advanced technologies, user-friendly features, and robust construction make it a leading option in the boiler market, ready to meet the demands of today’s homeowners. With an eye on energy efficiency and ease of use, Lochinvar 5 is well-equipped to provide comfortable, cost-effective heating for years to come.
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