Lochinvar 151 operation manual Start-up, Check for gas leaks Inspect/fill condensate system

10 Start-up

Installation & Operation Manual

Chlorine concentration less than 200 ppm

1.	Do not fill the water heater or operate with water
	containing chlorine in excess of 200 ppm.
2.	Filling with chlorinated fresh water should be acceptable
	since drinking water chlorine levels are much lower.
3.	Do not use the water heater to directly heat swimming

￿WARNING

Propane water heaters only – Your propane supplier mixes an odorant with the propane to make its presence detectable. In some instances, the odorant can fade, and the gas may no longer have an odor. Before startup (and periodically thereafter), have the propane supplier verify the correct odorant level in the gas.

pool or spa water.

4. At initial fill and during water heater startup and testing,

check system thoroughly for any leaks. Repair all leaks

before proceeding further.

Check for gas leaks

Inspect/fill condensate system

Inspect/check condensate lines and fittings

1.Inspect the condensate drain line, condensate PVC fittings and condensate trap.

￿WARNING

Before starting the water heater, and during initial operation, smell near the floor and around the water heater for gas odorant or any unusual odor. Remove the top access panel and smell the interior of the water heater enclosure. Do not proceed with startup if there is any indication of a gas leak. Use an approved leak detection solution. Repair any leaks at once.

Fill condensate trap with water

1.	Remove the PVC cap retaining screw from the PVC cap
	(FIG. 10-1).
2.	Remove the 2 inch PVC cap with the switch located at the
	top of the trap (FIG. 10-1).
3.	Fill with fresh water until the water begins to pour out of
	the drain.
4.	Replace the cap. Press the cap onto the trap until the cap

￿WARNING

DO NOT adjust or attempt to measure gas valve outlet pressure. The gas valve is factory set for the correct outlet pressure. This setting is suitable for natural gas and propane, requiring no field adjustment. Attempting to alter or measure the gas valve outlet pressure could result in damage to the valve, causing potential severe personal injury, death, or substantial property damage.

makes contact with the drain.

5. Replace the retaining screw.

The condensate trap (FIG. 10-1) must be

￿ WARNING filled with water during all times of water

heater operation to avoid flue gas emission from the condensate drain line. Failure to fill the trap could result in severe personal injury or death.

Figure 10-1Condensate Trap

RETAINING

SCREW

2” PVC CAP WITH

BLOCKED DRAIN SWITCH

PVC TEE ASSEMBLY (FACTORY SUPPLIED)

CONDENSATE FROM

HEAT EXCHANGER TO FLOOR

DRAIN

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