Jandy Legacy LRZM Installation And Operation Manual page 18

Page 18
Legacy
5. Tag and disconnect the white wire on the
pressure switch (PS) and the white wire on the
Fireman's switch terminal which leads to the high
limit switch.
6. Remove the water temperature sensor nut from
the inlet/outlet header and remove the sensor.
7. Tag and disconnect the black and white wires
from the water pressure switch.
CAUTION
In order to prevent property damage or injury, en-
sure that the wiring is handled and routed carefully
so as not to cause any damage to it. Additionally, be
careful not to create any kinks in the water pressure
switch copper tubing when handling the header.
ATTENTION
Afi n d'empêcher des dégâts matériels ou des bles-
sures, assurez-vous que le câblage est manipulé
et installé soigneusement de manière à ne pas
l'endommager. De plus, vous devez faire attention
à ne créer aucune imperfection dans la conduite en
cuivre de l'interrupteur de pression d'eau en ma-
nipulant la tête.
8. For an existing installation, remove the coupling
nuts from the header and disconnect the water
supply from the heater.
9. Remove the ten (10) bolts and washers from the
inlet/outlet header and remove the header from
the tube assembly.
10. Remove the ten (10) bolts and washers from the
return header and remove the header from the
tube assembly.
11. For an existing installation, remove the tube
gaskets and clean the header's mating surface of
any corrosion or debris. Replace the tube gaskets
with new ones. Do not use any metal tools on the
header surface. Scratches may compromise the
seal integrity.
12. Place the inlet/outlet header over the bolts and
gasketed tubes on the left side of the tube assem-
bly. Align the bolt and tube holes in the header
with the bolts and tubes in the header bar and
slide the assembly together. Refer to Figure 9.
NOTE Do not reverse the position of the bypass.
13. Thread on the ten (10) bolts and washers and
hand tighten.
14. Place the return header over the bolts and gasket-
ed tubes on the right side of the tube assembly.
Align the bolt and tube holes in the header with
the bolts and tubes in the header bar and slide the
assembly together.
Model LRZM Pool/Spa Heater Installation and Operation Manual
™
15. Thread on the ten (10) bolts and washers and
hand tighten.
16. Use a torque wrench to tighten the bolts on each
header to four (4) foot-pounds. The bolts must be
tightened in the sequence indicated in Figure 11.
CAUTION
Failure to tighten the header as indicated in step 16
may cause the header to leak or become perma-
nently damaged from warping.
ATTENTION
Si le tuyau collecteur n'est pas serré conformément
aux directives des l'étape 16, il risque d'avoir des
fuites ou de s'endommager de façon permanente.
17. Remove the 3/4 inch button plug located in the
left side panel below the inlet/outlet header and
replace with the 3/4 inch wire grommet from
the right side panel below the return header.
The high limit leads were routed through this
grommet prior to removal in step 5. Install the
3/4 inch plug in the opening where the 3/4 inch
wire grommet was removed.
18. Install the longer syphon loop tube (part number
R0483601) to the pressure switch and locate
the the pressure switch in the front area of the
cabinet.
19. Reconnect the white wire on the pressure switch
(PS) and the white wire on the Fireman's switch
terminal.
20. Reinstall the temperature sensor in the inlet/
outlet header and tighten the nut.
21. Reconnect the black and white wires to the water
pressure switch.
22. Use plastic wire ties to refasten the temperature
sensor, high limit switch and water pressure
switch wires to each other. Bundle the wires near
the control panel and fasten them with a wire tie.
7
3
2
8
6
4
10
1
5
9
Figure 11. Header Bolt Tightening Sequence