Lochinvar SNA285-125 Manual Do Utilizador

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.

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

check system thoroughly for any leaks.  Repair all leaks 
before proceeding further.

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.

2" PVC CAP WITH

BLOCKED DRAIN SWITCH

CONDENSATE DRAIN

RETAINING SCREW

CONDENSATE FROM

HEAT EXCHANGER

REMOVABLE CAP

TO CLEAN OUT TRAP

 WARNING

 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.

1.  Inspect the condensate drain line, condensate PVC fittings 

and condensate trap.

1.  Remove the PVC cap retaining screw from the PVC cap 

(FIG. 9-1).

2.  Remove the 2 inch PVC cap with the switch located at the 

top of the trap (FIG. 9-1).

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.

5.  Replace the retaining screw.

 WARNING

The condensate trap (FIG. 9-1) must be 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.

 WARNING

  Read this manual to familiarize yourself with electronic 

control module operation. Read pages 49 and 50 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 9, pages 47 

and 48 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.

       

Installation & Service Manual

TM

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.