Lochinvar 151 System piping, System water piping methods, General piping information

Page 37

6 System piping

System water piping methods

Observe a minimum of 1 inch clearance around all un-insulated hot water pipes when openings around the pipes are not protected by non-combustible materials.

General piping information

Basic steps are listed below along with illustrations on the following pages (FIG.’s 6-4 thru 6-8), which will guide you through the installation of the Armor water heater.

1.Connect the cold water supply to the inlet side of the water heater.

2.Connect the hot water supply to the outlet side of the water heater.

3.Install a backflow preventer on the cold feed make-up water line.

4.Install the factory supplied pump as shown in FIG.’s 6-4 thru 6-8.

5.Install an expansion tank on the system supply. Consult the tank manufacturer’s instruction for specific information relating to tank installation. Size the expansion tank for the required system volume and capacity.

6.Install a drain valve at the lowest point of the system.

7.This appliance is supplied with a relief valve sized in accordance with ASME Boiler and Pressure Vessel Code, Section IV (“Heating Boilers”). Pipe the discharge of the safety relief valve to a suitable drain to prevent injury in the event of pressure relief. Pipe the discharge to a drain. Provide piping that is the same size as the safety relief valve outlet. Never block the outlet of the safety relief valve.

The relief valve, tee and other necessary ￿ WARNING fittings are shipped in the install kit with the

water heater and are to be field installed. See the *piping illustrations included in this section, FIG.’s 6-4 thru 6-8 for suggested guidelines in piping the Armor water heater.

NOTICE

*Please note that these illustrations are meant

to show system piping concept only, the

 

 

installer is responsible for all equipment and

 

detailing required by local codes.

Flow switch and relief valve installation

Basic steps are listed below to guide you through the installation of the flow switch and relief valve provided with the unit.

1.Install the tee with the 3/4 inch fitting positioned vertically and on the top as shown in FIG. 6-1.

2.Install the relief valve into the 3/4 inch fitting of the tee installed in Step 1 (FIG. 6-1).

3.Install the close nipple on the downstream side of the temperature and pressure relief valve tee (FIG. 6-1).

4.Install the tee with the 1 inch fitting positioned vertically and on the top (FIG. 6-1).

5.Attach the paddle to the flow switch per the manufacturer’s instructions. Reference Table 6A to select the correct paddle for the pipe size used (consult the manufacturer’s instructions for a detailed explanation).

Installation & Operation Manual

For Example: If using a 1 1/4 inch pipe size (Models AWN151 - AWN200) select paddle #1.

6.Install the assembled flow switch into the 1 inch fitting of the tee installed in Step 4 (see FIG. 6-1).

NOTICE

Be sure to install flow switch so that the arrow

on the flow switch is pointing in the direction

 

of the flow (see FIG. 6-2).

Figure 6-1Flow Switch and Relief Valve Installation

RELIEF VALVE

FLOW SWITCH

PADDLE

TEE WITH 1” FITTING ON TOP

CLOSE NIPPLE

TEE WITH 3/4” FITTING ON TOP

Flow switch adjustment

Refer to Table 6A for the proper setting of the sensitivity screw. For reference, the position of the screw prior to setting should be turned clockwise with a Phillips driver until it stops (FIG. 6-2). Proceed to turn the screw counterclockwise the amount of turns listed in Table 6A based on the model.

Consult the manufacturer’s instructions for wiring the flow switch to your system.

Table 6A Paddle Size / Sensitivity Screw Adjustment

MODEL

PADDLE SIZE

SENSITIVITY SCREW

ADJUSTMENT

 

 

Note: Paddles are included with the flow switch.

151

#1

9 turns

200

#1

6 turns

286

#3

8¾ turns

400

#1

8 turns

501

#1

7½ turns

601

#1

7 turns

701

#1

6½ turns

801

#1

5½ turns

NOTICE

Turn the sensitivity screw clockwise to increase

the flow rate required to activate the switch.

 

Turn the sensitivity screw counterclockwise to

 

decrease the flow rate required to activate the

 

switch.

Figure 6-2Flow Switch Adjustment

NORMALLY

OPEN

SENSITIVITY

ADJUSTMENT

GROUND

NORMALLY

COMMON37

CLOSED

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Contents What to do if YOU Smell GAS Installation&OperationManual Models 151Contents Please read before proceeding When servicing the water heaterStainless steel heat exchanger Armor Water Heater How it worksModels 151 Models 601 Models 400CSA RatingsCloset and alcove installations Installation must comply withDetermine water heater location Before locating the water heater, check1Closet Installation Minimum Required Clearances Provide air openings to room Residential garage installationVent and air piping Flooring and foundationAreas likely to have contaminants Products to avoidDetermine water heater location Gas conversions Prepare water heaterRemove water heater from wood pallet Models 151Model 3Installing Propane Orifice ModelLeveling the water heater Models 601Direct venting options Sidewall Vent General ventingDirect venting options Vertical Vent, Sidewall Air Direct venting options Vertical VentRequirements for installation in Canada Install vent and combustion air pipingInstalling vent or air piping PVC/CPVC Vent piping materialsVent Pipe, and Fittings PVC/CPVC Air intake/vent connectionsStainless steel vent Air inlet pipe materialsFlue Stainlesssteelairintake/ventconnectionsFlue Intake Air Adapter Termination Model Kit NumberModel Air Intake Vent Removing from existing ventVent and air system Vent, air piping and termination Optional room airModel Kit Number Description Air contaminationSidewall direct venting If using the alternate sidewall terminationVent/air termination sidewall Determine location3AClearance to Gravity Air Inlets Seal all wall cavities Prepare wall penetrationsMultiple vent/air terminations Prepare wall penetrations Alternate Field Supplied OptionTermination and fittings Sidewall termination optional concentric vent Models 151 Sidewall termination installationDescription and usage 11 Concentric Multiventing sidewall terminations 13Concentric Vent Sidewall AttachmentVent/air termination vertical Vertical direct ventingMultiple vent/air terminations Prepare roof penetrationsVertical termination optional concentric vent Models 151 Vertical termination installationMinimum Combustion AIR Typical Multiventing vertical terminationsConcentric Venting Arrangement Alternate vertical concentric venting10Existing Vent as a Chase Existing vent as a chaseFlow switch adjustment Flow switch and relief valve installationSystem piping System water piping methodsPiping components ScaldingWater chemistry 4Single Heater Single Tank 2 Temperature Cold Water Supply Cold Water Supply Number of Units Model 8Double Heater Double Tank Gas connections Connecting gas supply pipingPropane gas Natural gasCheck inlet gas supply Single Unit Natural Gas Pipe Capacity ChartLength of Pipe in Straight Feet for 1/2 PSI Gas pressure Gas valve replacementInstallation must comply with Field wiringLine voltage connections Low voltage connectionsLouver proving switch Tank thermostat Low gas pressure switchHigh gas pressure switch Flow switchWiring of the cascade Alarm contactsRuntime contacts 3Low Voltage Field Wiring Connections Condensate drain Condensate disposalCheck for gas leaks Inspect/fill condensate system Start-upChlorine concentration less than 200 ppm Inspect/check condensate lines and fittingsStart the water heater Final checks before starting the water heaterIf water heater does not start correctly Check system and water heaterFor Your Safety Read Before Operating 3Operating Instructions Models 400 Verify WHR circulator mode Set tank set point temperatureSet water heater operation Natural Gas PropaneSet clock Configuration of the cascadeGeneral Operating informationWater heater temperature regulation Cascade InstallerSequence of the cascade UserOperation Display Sequence of operation1Control Panel Armor water heater control moduleWater heater Information Dial Function Service technician Maintenance Maintenance and annual startupOwner maintenance Maintenance Check all water heater wiring Check ignition ground wiringCheck control settings Check water systemCleaning heat exchanger Check flame signalPerform start-up and checks Check burner flameOiled bearing circulators Check Delta TModel Kit Part Component Number Description PC Interface Diagrams2Wiring Diagram Page Page AWII-I-O Rev C
Related manuals
Manual 16 pages 16.89 Kb

151 specifications

Lochinvar 151,286 is a notable model in the realm of commercial water heating solutions, designed primarily for large-scale applications. This model incorporates advanced technologies and features that set it apart in terms of efficiency, usability, and reliability.

One of the hallmark features of Lochinvar 151,286 is its high-efficiency system that leverages condensing technology. This technology enables the unit to extract additional heat from exhaust gases, allowing it to operate at an impressive annual fuel utilization efficiency (AFUE) rating. This not only reduces energy consumption, but it also significantly lowers operational costs.

The Lochinvar 151,286 is equipped with a robust stainless steel heat exchanger, which provides both durability and enhanced thermal efficiency. This design withstands the rigors of high-demand environments, making it ideal for restaurants, schools, hospitals, or any facility requiring consistent hot water supply. Its compact footprint allows it to be installed in tight spaces without sacrificing performance.

Another standout characteristic is its intelligent control system. The built-in touchscreen interface offers users an intuitive way to manage settings, monitor performance, and troubleshoot issues. This smart technology aids in simplifying maintenance and improves overall system reliability. The unit also features advanced safety protocols, including multiple sensors that monitor operation and provide alerts in case of irregular performance.

In terms of capacity, the Lochinvar 151,286 can deliver an impressive output, accommodating varying demands with ease. Its innovative modulation capabilities allow the unit to adjust its heating output based on real-time hot water needs, ensuring unmatched comfort and efficiency.

Supporting the model’s performance are versatile connectivity options. Lochinvar 151,286 can integrate seamlessly with building management systems, allowing facility managers to monitor and control heating processes remotely. This level of connectivity not only enhances control but also supports energy-saving strategies across the facility.

In conclusion, Lochinvar 151,286 stands out as a premium choice for commercial water heating needs. With its high-efficiency ratings, durable construction, intelligent control system, impressive capacity, and versatile connectivity, it ensures that hot water is delivered reliably and efficiently, meeting the demands of modern businesses while reducing energy costs. This combination of technology and design makes it an essential component for any large-scale facility focused on performance and sustainability.
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