Jandy Legacy LRZM, Installation And Operation Manual

Page 21

Legacy

™

 Model LRZM Pool/Spa Heater Installation and Operation Manual

Section 6.  Electrical

 CAUTION

Label all wires prior to disconnection when servic-
ing controls. Wiring errors can cause improper and 
dangerous operation.  Verify proper operation after 
servicing.

 ATTENTION

Au moment de l'entretien des commandes, 
étiquetez tous les 

fi

 ls avant de les débrancher. Des 

erreurs de câblage peuvent entraîner un fonc-
tionnement inadéquat et dangereux.

6.1 Main 

Power

The Legacy heater does not require an external 

source of electrical power to operate. The power for 

the gas valve and safety circuit are generated by a 

thermopile. The thermopile generates a millivolt signal 

when heated by the pilot 

fl

 ame. Figure 16 shows the 

internal electrical wiring diagram and schematic of the 

heater.

6.2 Bonding

CAUTION

To prevent premature failure of the appliance result-
ing from stray voltages and voltage differentials, the 
heater must be bonded to other equipment which is 
part of the pool plumbing system with a solid copper 
wire not smaller in diameter than 8 AWG, 6 AWG in 
Canada.

 ATTENTION

Pour éviter le bris prématuré de l'appareil dû à 
des tensions vagabondes et à des différences 
de tension, le chauffe-piscine doit être scellé à 
l'équipement faisant partie de la plomberie de la 
piscine à l'aide d'un 

fi

 l de cuivre massif dont le 

diamètre n'est pas inférieur à un calibre 8, et un 
calibre 6 pour le Canada.

Zodiac Pool Systems, Inc. requires that the appli-

ance be connected to a "bonding loop" that includes all 

electrical equipment in the system and on the equip-

ment pad.  Bonding lugs must be connected with a 

solid copper wire not smaller than 8 AWG (6 AWG in 

Canada).  Failure to do so will void warranty. 

Additionally, in the United States the National 

Electrical Code and in Canada the Canadian Electri-

cal Code, require that all metallic components of 

a pool structure, including reinforcing steel, metal 

fi

 ttings and above ground components be bonded 

together (forming a “bonding grid”) with a solid 

copper conductor not smaller than a 8 AWG (6 AWG 

in Canada). 

The NEC and the CEC also require that the 

equipment and/or appliances associated with the pool 

water circulating system, including, but not limited to, 

pump motors and heaters be bonded together as part 

of the equipotential bonding grid. Zodiac provides a 

special labeled bonding lug on the right side of the 

heater to accommodate this requirement.

6.3 

Auxiliary Time Clock Wiring

If you install a time clock to control the 

fi

 lter 

pump operation, it is recommended that the time clock 

have its own low voltage (Fireman’s) switch to turn 

off the heater before turning off the pump. The switch 

should shut off the heater about 15 minutes before 

the 

fi

 lter pump shuts off. This will allow for a more 

ef

fi

 cient operation by removing any residual heat 

contained in the heat exchanger back to the pool.

To install a time clock auxiliary switch into the 

heater wires (see Figure 15):

1. 

Remove heater door.

2. 

Remove the factory installed wire between termi-

nals 1 and 2 on the terminal strip (see Figure 15).

3. 

Connect the wires from the time clock auxiliary 

switch to the two terminals. Use American Wire 

Gauge (AWG) No. 14 gauge stranded copper 

wire with a temperature rating of 221°F (105°C) 

or greater.
The length of the wire between  the heater and 

the time clock should not exceed 10-15 feet (4.57 m). 

The contact points of the time clock switch should be 

silver, or a low resistance alloy.

OR CONTROL

BLACK

BLACK

Figure 15.  Fireman's Switch or Control Connection