Lochinvar ER202, ER152, ER302 1Maintenance schedule continued, Test low water cutoff if installed

Models: ER252 ER402 ER202 ER302 ER152

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1Maintenance schedule (continued)

User’s Information Manual

1Maintenance schedule (continued)

Test low water cutoff (if installed)

1.If the system is equipped with a low water cutoff, test the low water cutoff periodically during the heating season, following the low water cutoff manufacturer’s instructions.

Operate relief valve (if applicable)

1.Before proceeding, verify that the relief valve outlet has been piped to a safe place of discharge, avoiding any possibility of scalding from hot water.

Reset button (low water cutoff)

1.Testing the low water cutoff shuts the unit off. Press the RESET button on the low water cutoff to turn the unit back on.

Check pool heater piping (gas and water)

1. Remove the pool heater front access door and perform

a gas leak inspection per steps 1 through 6 of the

Operating Instructions on page 8. If gas odor

￿WARNING

To avoid water damage or scalding due to valve operation, a metal discharge line must be connected to the relief valve outlet and run to a safe place of disposal. This discharge line must be installed by a qualified heating installer or service technician in accordance with the instructions in the EnergyRite Installation and Operation Manual. The discharge line must be terminated so as to eliminate possibility of severe burns or property damage should the valve discharge.

or leak is detected, immediately shut down the pool

heater following the procedures on page 8.

Call a qualified service technician.

2. Visually inspect for leaks around water piping.

Also inspect the circulators, relief valve, and fittings.

Immediately call a qualified service technician to

repair any leaks.

￿ WARNING

Have leaks fixed at once by a qualified

 

service technician. Failure to comply

 

could result in severe personal injury,

 

death, or substantial property damage.

3.Replace the front access door.

2.Read the pool heater pressure/temperature gauge to make sure the system is pressurized. Lift the relief valve top lever slightly, allowing water to relieve through the valve and discharge piping.

3.If water flows freely, release the lever and allow the valve to seat. Watch the end of the relief valve discharge pipe to ensure that the valve does not weep after the line has had time to drain. If the valve weeps, lift the seat again to attempt to clean the valve seat. If the valve continues to weep afterwards, contact your qualified service technician to inspect the valve and system.

4.If water does not flow from the valve when you lift the lever completely, the valve or discharge line may be blocked. Immediately shut down the pool heater, following the operating instructions on page 8 of this manual. Call your qualified service technician to inspect the pool heater and system.

Shut pool heater down

1.Follow “To Turn Off Gas to Appliance” on page 8 of this manual.

2.Do not drain the system unless exposure to freezing temperatures will occur.

3.Do not drain the system if it is filled with an antifreeze solution.

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Lochinvar ER202 1Maintenance schedule continued, Test low water cutoff if installed, Operate relief valve if applicable