Lochinvar SNA285-125, SNA500-125, SNR200-100 Vertical termination optional concentric vent

Page 27

TM

Installation & Service Manual

4Vertical direct venting (continued)

Vertical termination – optional concentric vent

Description and usage

Lochinvar offers an optional concentric combustion air and vent pipe termination kit. Both combustion air and vent pipes must attach to the termination kit. The termination kit must terminate outside the structure and must be installed as shown in FIG. 4-4.

Field supplied pipe and fittings are required to complete the installation.

The required combustion air and vent pipe fittings are listed in Table 2A, on page 15 of this manual.

Vertical termination installation

1.Determine the best location for the termination kit (see FIG. 4-4).

2.The total length of piping for vent or air must not exceed the limits given in the General Venting section on page 17 of this manual.

Figure 4-4Concentric Vertical Termination

3.Cut one (1) hole (5 inch diameter for #CVK3003 installations or 7 inch diameter for #CVK3007 installations) into the structure to install the termination kit.

4.Partially assemble the concentric vent termination kit. Clean and cement following the cleaning procedures in these instructions.

a.Cement the Y concentric fitting to the larger diameter kit pipe (see FIG.’s 3-7 and 3-8, page 22).

b.Cement rain cap to the smaller diameter kit pipe (see FIG.’s 3-7 and 3-8, page 22).

c.Do not attach a U-Bent to the rain cap. Doing so could cause recirculation (see FIG. 4-5).

NOTICE

Instead of cementing the smaller pipe to the

rain cap, a field supplied stainless steel screw

 

 

may be used to secure the two (2)

 

components together when field disassembly

 

is desired for cleaning (see FIG. 3-11,

 

page 23).

￿WARNING

When using the alternate screw assembly method, drill a clearance hole in the rain cap and a pilot hole in the vent pipe for the screw size being used. Failure to drill adequate holes may cause cracking of PVC components, allowing combustion products to be recirculated. Failure to follow this warning could result in personal injury or death.

Figure 4-5Do Not Install U-Bent to Rain Cap

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Contents What to do if YOU Smell GAS Installation & Service ManualContents Hazard definitions Please read before proceedingBlower Shield How it worksModels SNR150-100 -- SNA285-125 Model SNA500-125 Model SNA400-125CSA RatingsBefore locating the water heater, check Installation must comply withCloset and alcove installations Determine water heater location1Closet Installation Minimum Required Clearances Flooring and foundation Remove water heater from wood palletPrevent combustion air contamination Do not install the Shield water heater into 3Combustion Air Direct from Outside Minimum Recommended Combustion AIR Supply to Equipment Room Direct venting options General ventingVenting and combustion air CanadaVent pipe and fittings Air inlet pipe materials Air intake/vent connectionsVent Length Removing from existing ventVent and air piping Vent Size If using the alternate sidewall terminationSidewall direct venting Vent/air termination sidewall2Clearance to Gravity Air Inlets Prepare wall penetrations Prepare wall penetrations Alternate Field Supplied OptionTermination and fittings 5AMultiple Vent Terminations must also comply with -1A Multiple vent/air terminationsSidewall termination installation Sidewall termination optional concentric ventDescription and usage 9Concentric Vent Dimensional Drawing Multiventing sidewall terminations 12Concentric Vent Sidewall AttachmentVent/air termination vertical Vertical direct venting2Vertical Terminations with Multiple Water Heaters Prepare roof penetrationsVertical termination optional concentric vent Vertical termination installationMultiventing vertical terminations 6Concentric Vent Roof Installation1Vertical Direct Venting w/Room Air Conventional and sidewall ventingGeneral piping information System pipingSystem water piping methods ScaldingPiping components Water chemistryDelta T Single Unit 3Multiple Units Water Tank Supply Gas connections Connecting gas supply pipingPropane gas Natural gasNatural Gas Pipe Capacity Chart Check inlet gas supplyLength of Pipe in Straight Feet for 1/2 PSI Gas pressure Gas valve replacementField wiring 3Low Voltage Field Wiring Connections Inputs Condensate drain Condensate disposalStart-up Check for gas leaks Inspect/fill condensate systemFinal checks before starting the water heater Check flame and combustion Start the water heaterIf water heater does not start correctly Check system and water heater2Operating Instructions Models SNR150-100 -- SNA285-125 3Operating Instructions Models SNA400-125 -- SNA500-125 General Temperature controlProtection features Operating informationWater heater temperature regulation Adjustable control parametersSaving parameters HTR Ignition Sequence of operation1Control Panel Shield control moduleStatus Display Screens Status display screensStatus Display Screens cont’d Maintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Check water heater relief valve Flue vent system and air pipingCheck water system Check expansion tankCheck flame signal Check ignition ground wiring Check burner flameCheck all water heater wiring Check control settingsNiosh stated First Aid Cleaning heat exchangerHandling ceramic fiber materials Oiled bearing circulatorsCheck the following TroubleshootingBefore troubleshooting Check control module fusesAbove 50% No DisplayNo Burner Operation Unit Does Not ModulateTemperature F Resistance Ω Checking temperature sensorsTroubleshooting Flame SequenceNo Flame Ign Fail No FlameRunning GV/RelayFan Speed Low Manual ResetHigh Limit Fan LowSensor Open SwitchFan High Fan Speed HighProgr ParametersWrite EEProm Service BlkWatch Dog Error Low 24 VACGas Supply Pressure Combustion Analysis ProcedureGas Valve Adjustment Or ObstructionModel SNA500-125 Gas valve adjustment procedureModels SNR150-100 -- SNA285-125 Model SNA400-125120 VAC DiagramsLOW Voltage

SNA400-125, SNR150-100, SNA285-125, SNR200-100, SNA500-125 specifications

Lochinvar has established itself as a leader in the realm of high-efficiency heating solutions, and its line of condensing boilers, including the SNA500-125, SNR200-100, SNA400-125, SNA285-125, and SNR150-100, exemplifies the brand’s commitment to innovation, efficiency, and reliability.

The SNA500-125 model stands out with its impressive heating capacity, designed for larger commercial applications. Featuring advanced modulating burners, it can precisely adjust its output based on real-time demand, significantly enhancing energy efficiency. The stainless steel heat exchanger ensures robust durability and improved thermal performance, while the integrated controls offer advanced diagnostic capabilities and user-friendly operation.

Next in the lineup, the SNR200-100 serves as a versatile option for mid-sized applications. Its compact design allows for flexible installation, making it a valuable choice for facilities with limited space. The boiler incorporates a high-efficiency combustion system that maximizes fuel utilization, while its low NOx emissions technology aligns with environmental standards, reducing the carbon footprint of users.

The SNA400-125 delivers a robust solution for diverse heating needs, equipped with state-of-the-art modulation technology that not only optimizes efficiency but also offers quiet operation – a crucial feature for facilities where noise reduction is paramount. This model also includes built-in redundancy options, enhancing reliability during peak operational periods.

The SNA285-125 provides a balance of performance and efficiency for smaller commercial settings. Its innovative control system offers precise temperature management and easy integration with existing systems. Energy Star certified, this model is not only cost-effective but supports sustainability efforts in various industries.

Lastly, the SNR150-100 is ideally suited for light commercial applications, featuring a compact footprint and excellent heat transfer capabilities. The user-friendly interface and robust safety features make it an excellent choice for operators prioritizing both ease of use and reliability.

All these models incorporate Lochinvar's commitment to superior design and advanced technologies, setting a benchmark in the high-efficiency heating market. With a focus on long-term performance and compliance with modern environmental standards, Lochinvar continues to deliver top-tier solutions tailored to meet diverse customer needs. Whether for large-scale operations or smaller settings, these boilers represent a significant advancement in commercial heating technology.
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