Lochinvar SNR150-100, SNA500-125 Start-up, Check for gas leaks Inspect/fill condensate system

TM

Installation & Service Manual

10 Start-up

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
	pool or spa water.

￿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.

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
	makes contact with the drain.

￿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 (when configured for LP), 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.

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.

Final checks before starting the water heater

Figure 10-1Condensate Trap

2" PVC CAP WITH

BLOCKED DRAIN SWITCH

RETAINING SCREW	CONDENSATE FROM
	HEAT EXCHANGER

CONDENSATE DRAIN

REMOVABLE CAP

TO CLEAN OUT TRAP

￿Read this manual to familiarize yourself with electronic control module operation. Read pages 45 and 46 for proper steps to start the water heater.

￿Verify the water heater and system are full of water and all system components are correctly set for operation.

￿Verify the preparation procedures of Section 10, pages 43 and 44 have been completed.

￿Fill the vent condensate trap with water (removing the retaining screw in order to remove the 2 inch PVC cap with the switch located at the top of the trap). Replace the cap. Press the cap onto the trap until the cap makes contact with the drain. Replace the retaining screw.

￿Verify electrical connections are correct and securely attached.

￿Inspect vent piping and air piping for signs of deterioration from corrosion, physical damage or sagging. Verify air piping and vent piping are intact and correctly installed per

this manual. 43