Lochinvar 151 - 801 service manual Noisy, No Pump, Relief Valve, Opening

Page 27

Service Manual

3Troubleshooting (continued)

Table 3E Troubleshooting Chart - Noisy System

FAULT

 

 

 

CAUSE

 

 

 

CORRECTIVE ACTION

 

 

 

 

 

 

 

 

- Supply gas problem. Natural gas pressures

 

 

 

 

 

 

should be

between

4

inches

w.c.

and

• Refer to

Section 7 - Gas Connections of the Armor

 

14

inches

w.c.

LP

gas

pressures should

Water Heater Installation and Operation Manual for

 

be

between

8

inches

w.c.

and

detailed information concerning the gas supply.

 

14 inches w.c.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Refer to the Gas Valve Adjustment Procedure on

 

 

 

 

 

 

 

 

 

pages 37-38 of this manual for the proper gas valve

 

- Gas/air mixture problem.

 

 

 

setting.

Verify that the vent/air intake lengths do not

 

 

 

 

exceed the maximum listed in the General Venting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

section of the Armor Water Heater Installation and

 

 

 

 

 

 

 

 

 

Operation Manual.

Noisy

 

 

 

 

 

 

 

 

 

 

 

 

 

Operation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Refer to page 22 in this manual for the burner removal

 

 

 

 

 

 

 

 

 

 

- Dirty/damaged burner.

 

 

 

and inspection procedure. Clean or replace the burner

 

 

 

 

 

 

 

 

 

as necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Refer to Section 6 - System Piping of the Armor Water

 

- Low water flow through the heat exchanger.

Heater Installation and Operation Manual for minimum

 

 

 

 

 

 

 

 

 

flow rates.

 

 

 

 

 

 

 

- Air in the piping system.

 

 

 

• Properly purge all air from the piping system.

 

 

 

 

 

 

- Low system water pressure.

 

 

• Verify system pressure is a minimum of 12 PSI.

 

 

 

 

 

 

 

 

 

 

 

- Blown fuse.

 

 

 

 

 

• Replace fuse F1 on the control board, see page 24 of

 

 

 

 

 

 

this manual.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No Pump

- Faulty pump.

 

 

 

 

 

• Replace pump.

 

 

 

 

 

 

 

 

 

 

 

 

 

Operation

 

 

 

 

 

 

 

 

 

 

 

 

 

- Faulty pump relay.

 

 

 

 

• Replace pump relay.

 

 

 

 

 

 

 

 

 

 

 

- Internal fault on control board.

 

 

• Replace main control board.

 

 

 

Relief Valve

- System pressure exceeds relief valve

• Lower the system pressure below the 150 PSI rating of

Opening

setting.

 

 

 

 

 

 

the supplied relief valve.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

27

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Image 27
Contents Models 151 Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid Troubleshooting What is in this manual?Service MaintenanceArmor water heater display ServiceControl inputs Smart System Control BoardControl outputs Smart System Control BoardSequence of operation Access modesGeneral Operation How the water heater operatesOperation Display Button Screen Operation Display Status Display panel menu accessDisplay panel parameter access General Parameter tableModes Viewable and changeable control parameters Anti-Cycling DHW SettingsData Logging FunctionsControl modes Circulation pumps Minimum On/Off TimeService Notification Maintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Check water heater relief valve Flue vent system and air pipingCheck water system Check expansion tankPerform start-up and checks Check ignition ground wiringCheck all water heater wiring Check control settingsOiled bearing circulators Check flame signalCleaning heat exchanger Review with ownerCheck the following TroubleshootingBefore troubleshooting Check control module fusesUnit Does Not No DisplayNo Burner OperationResistance Temperature Checking temperature sensorsTemperature F Resistance Ω Wire Color R/BK and Y Wire Color G and YOpening NoisyNo Pump Relief ValveFlow Switch Fault Description Corrective ActionFlame Fail Ign Anti-cyclingRunning No FlameHigh Limit Auto ResetManual Reset Flame SequenceFail Fan LowFan Speed Low GV/RelayDelta T High Sensor ShortedLouver Proving Flue Temp HighService Blk Outlet Temp HighRem Ctrl Flt Low 24 VAC Watch Dog ErrorNo Error Stored Fatal ErrorGas Supply Pressure Combustion Analysis ProcedureGas Valve Adjustment Or ObstructionGas valve adjustment procedure Models 151Model Models 601 4Gas Valve Adjustment Model

151 - 801 specifications

Lochinvar 151 - 801 is a high-efficiency commercial water heater designed to meet the demanding needs of various applications in the hospitality, healthcare, and educational sectors. This advanced system provides reliable hot water with enhanced performance while promoting energy conservation and sustainability.

One of the standout features of the Lochinvar 151 - 801 is its powerful heating capability. With a robust heating input of up to 150,000 BTU per hour, it ensures a steady supply of hot water even during peak demand times. The efficient heat exchanger design optimizes thermal performance, allowing for quicker recovery rates, which is essential for facilities requiring substantial hot water usage.

This model integrates cutting-edge technologies to maximize energy efficiency. Utilized in the Lochinvar 151 - 801 is the Smart System control technology, which provides precise temperature management and diagnostics. This feature not only enhances operation efficiency but simplifies service and maintenance by providing real-time data and alerts, leading to reduced downtime.

Additionally, the Lochinvar 151 - 801 employs a stainless-steel tank construction that promotes durability and robustness. The tank is adequately insulated to minimize heat loss, thus keeping energy costs down. Its compact design also allows for easy installation in various spaces, including those with limited footprints.

Moreover, the unit features advanced combustion technology, including a modulating gas valve that adjusts the flame size according to demand, promoting even greater efficiency. This ensures that the water heater operates at optimum performance levels, reducing fuel consumption while ensuring a consistent supply of hot water.

Safety is a primary concern for Lochinvar, and the 151 - 801 model includes several integrated safety features, such as an ignition safety shutoff and a temperature/pressure relief valve. These systems work together to provide peace of mind while ensuring the unit operates safely within its designated parameters.

In conclusion, the Lochinvar 151 - 801 is an exemplary choice for commercial applications, offering powerful performance, efficient technologies, durable construction, and enhanced safety features. With its combination of high output and advanced monitoring capabilities, it stands as a reliable solution for organizations seeking an effective hot water heating solution.