Jandy Legacy LRZM, Installation And Operation Manual

Page 30

Legacy

™

 Model LRZM Pool/Spa Heater Installation and Operation Manual

held beneath the burners. The 

fl

 ame should be

a. 

Blue in color.

b. 

1 to 4 inches (25mm to 102mm) above 

burner surface (see Figure 23).

7. 

Inspect the gas and electronic controls, including 

the following:

a. 

High temperature limit switch

b. 

Water pressure switch

c. 

Automatic gas valve

 d. 

Fusible 

Link

 e. 

Temperature 

control

8. 

Perform a temperature rise test in accordance 

with Section 7.6.

9. 

If the heater is equipped with a pressure relief 

valve, check for corrosion in and around the 

valve. With the 

fi

 lter pump on, lift the release 

lever on the top of the valve to make sure that 

water runs freely through it. If corrosion is found, 

replace the pressure relief valve. When replacing 

the valve, be sure that the pump is off. Install the 

valve so that the discharge is directed away from 

any area that may be damaged by water.

10.  Inspect the external surfaces of the heat exchang-

er tubes for black carbon soot buildup by placing 

a mirror between and under the burners when the 

heater is 

fi

 ring. Remove any soot that has collect-

ed on the tubes, and correct the cause.

NOTE

  After installation and 

fi

 rst start-up, check the 

heat exchanger for black carbon soot buildup 
after the following periods of operation: 24 
hours, 7 days, 30 days, 90 days, and once 
every 6 months thereafter.

WARNING

Do not use this heater if any part has been under 
water. Immediately call a quali

fi

 ed service techni-

cian to inspect the heater and replace any part of 
the control system and any gas control which has 
been under water.

 AVERTISSEMENT

N'utilisez pas cet appareil s'il a été plongé dans 
l'eau, même partiellement. Faites inspecter 
l'appareil par un technicien quali

fi

 é et remplacez 

toute partie du système de contrôle et toute com-
mande qui ont été plongés dans l'eau.

3. 

If the heater is equipped with a pressure relief 

valve, check for corrosion in and around the 

valve. Twice a year, with the 

fi

 lter pump on, lift 

the release lever on the top of the valve to make 

sure that water runs freely through it. If corrosion 

is found, replace the pressure relief valve. When 

replacing the valve, be sure that the pump is off. 

Install the valve so that the discharge is directed 

away from any area that may be damaged by 

water. 

4. 

Be sure all combustion air and ventilation 

openings are not blocked. Check for spider webs 

and other debris inside the heater, in the vents on 

all sides of the heater jacket and in the exhaust 

outlet– especially after a long period of nonuse.

8.3.2 Professional 

Inspection

Inspections performed at least once a year by 

a quali

fi

 ed technician are required to maintain your 

heater's safe and ef

fi

 cient operation. The following 

basic safety checks must be performed.

1. 

Inspect the venting system for blockage, leakage, 

and corrosion.

2. 

Inspect burners and verify that they are clean. 

Clean with a wire brush if necessary to remove 

debris.

3. 

Check for spider webs and other debris in the 

pilot and main burner ori

fi

 ces - especially at 

spring start-up.

4. 

Check for loose or broken wires and terminal 

connections.

5. 

Make sure that the pressure switch operates 

properly by shutting the 

fi

 lter pump off and on 

a few times. The burner should go off immedi-

ately after the pump stops. An ignition sequence 

should start shortly after the pump is turned back 

on.

6. 

Make a visual check of the main burner 

fl

 ame. 

The 

fl

 ame can be seen in a mirror arrangement 

Figure 23.  Main Burner Flame