Lochinvar CLN 120080 User Manual (English)

Questions and Answers:

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Mark WalkerAug 8, 2025
Why is my Lochinvar Water Heater not producing enough hot water?
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  Brandon GarciaAug 8, 2025
  Several factors can cause insufficient hot water. The thermostat might be set too low; try setting the thermostat dial to a higher temperature. The upper or lower temperature probe might be out of calibration, requiring a qualified service agency to check continuity and resistance, and replace the probes if needed. The main manual gas shutoff valve could be partially closed; ensure it's fully open. The heater might be too small for the demand; try spacing out water usage to allow the heater time to restore water temperature. Finally, the heater recovery may be slow, requiring a qualified service agency to check the gas input and look for inlet air or flue gas exhaust blockages.
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Desiree RamirezAug 12, 2025
What to do if my Lochinvar CLN 120080 is not hot enough?
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  Patrick MendezAug 12, 2025
  If your water is not hot enough, the thermostat may be set too low. Try setting the thermostat dial to a higher temperature. Alternatively, the upper or lower temperature probe may be out of calibration, in which case you should call a qualified service agency to check the continuity and resistance of the probes, and replace them if they are out of specification.
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Leah RamseyAug 17, 2025
What to do if my Lochinvar CLN 120080 Water Heater smells like gas?
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  brandyhansenAug 17, 2025
  If you notice gas odors, it could indicate possible gas leaks. Immediately shut off the gas supply to the heater and call the gas company.
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Paul LeeAug 21, 2025
How to fix water leaks in my Lochinvar CLN 120080 Water Heater?
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  Marie EdwardsAug 21, 2025
  If you have water leaks, first check if the drain valve is not closed tightly. If it is loose, try to close it tightly. If the drain valve cannot be closed tightly, replace it. If you cannot identify or correct the source of the leak, shut off the gas supply to the heater and close the cold water inlet valve to the heater, then call a qualified service agency.
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Brandon BuckAug 25, 2025
Why is my Lochinvar Water Heater's water temperature too hot?
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  allison66Aug 26, 2025
  If the water temperature is too hot, the thermostat may be set too high. Try setting the thermostat to a lower setting.
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Steven ScottAug 29, 2025
Why does my Lochinvar CLN 120080 Water Heater make a rumbling noise?
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  Rachel WilliamsAug 29, 2025
  Rumbling noises are often caused by sediment accumulation on the bottom of the tank. Try draining a quantity of water through the drain valve. If the rumbling persists, call a qualified service agency.
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mirandamichelleSep 3, 2025
What causes pounding or water hammer in my Lochinvar CLN 120080 Water Heater?
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  craiggallegosSep 3, 2025
  Pounding or water hammer can occur if air chambers in the piping have become waterlogged, or if the thermal expansion tank is damaged, improperly charged, or improperly sized. To resolve this, drain the piping system and refill it, ensuring the heater is off during this process. Also, check the thermal expansion tank charge pressure when the water system pressure is zero.

Lochinvar CLN 120080 Specifications

General

Model	CLN 120080
Category	Water Heater
Capacity	80 Gallons
Type	Commercial
Input	120, 000 BTU/hr
Recovery Rate	125 GPH at 100°F rise
Efficiency	96%
Recovery Efficiency	80%
Water Connections	2" NPT
Vent Size	6 inches