Reversible Water Connections - Hayward H150 Installation, Operation And Service Manual

Reversible water connections:

The H-Series heater is designed so that it can be installed with
the water connections located on either the left or right side of the
heater. Heaters are shipped from the factory with the water con-
nections on the right side. To bring the water connections to the
left side, follow the step-by-step instructions below and refer to the
illustration in Figure 8. A trained service technician should perform
these procedures before the heater is installed.
1. Lift up and remove heater integral vent.
2. Remove screws from left and right side access panels and re-
move the panels.
3. Remove screws from rear heat shield and remove heat shield.
4. Remove screws from top rain guard and remove rain guard.
5. Disconnect high limit wires from the main harness and/or terminal
block. Pull the high limit wires through oval slot in the intermediate
panel. Disconnect wires from the pressure switch. Reroute the
disconnected main harness wires to opposite side of heater.
6. Remove the pressure switch tube and pull through oval slot in the
intermediate panel.
7. Millivolt Heaters Only - Remove the thermostat bulb from the
front header and reroute to opposite side of heater.
!
NOTE: Using needle nose pliers to pull out copper strip makes
bulb removal easier. Pull thermostat capillary tube and bulb through
oval slots in the intermediate panel.
!
CAUTION: Be careful not to crimp capillary tube as they could
break from mishandling.
8. Electronic Heaters Only - Disconnect thermistor leads from
control panel and pull through intermediate panel.
9. Remove the drain valve and brass plug from the front header and
save for reinstallation.
10. Remove the four screws from the flue collector and remove flue
collector from heater.
11. Remove 12 nuts retaining front header and carefully remove
header. CAUTION: By-pass and thermal governor may become
dislodged when removing front heater. They must be reinstalled
properly prior to reinstallation of front header. CAUTION: Header
O-rings may be reused if not permanently deformed. If installing
new O-rings, Jack's 327 Lube may be liberally applied to O-rings
to keep them in place during header installation.
12. Lift out heat exchanger and rotate it 180 degrees horizontally.
CAUTION: DO NOT FLIP IT OVER. THE HEAT EXCHANGER
WILL BE DAMAGED IF INSTALLED INCORRECTLY. CAU-
TION: Care must be taken not to damage top corners of com-
bustion chamber panels.
13. Reinstall front header on heat exchanger (TOP marking on
header should now be on the bottom).
14. Torque nuts from 5 to 7 ft.-lbs. in the sequence shown in
Figure 8. Install drain previously removed into the bottom
header, and install brass plug into the top. Use new sealant on
the threads of these parts before reinstalling. Do over tighten.
15. Move the pressure switch tube over to the left side of the heater
and route through hole in the intermediate panel. Insert tube in
fitting and tighten the ferrule down with the nut.
SECTION 3. INSTALLATION
16. Replace the flue collector and secure with the four screws. Make
sure insulation strips on flue collector remain in place.
17. Millivolt Heaters Only - Carefully route the thermostat capillary
tube and bulb to the heater left side and route bulb through the
oval slot in the intermediate panel. Place thermostat bulb back in
the bulbwell using the copper strip to hold the bulbs all the way
into the bulb-well.
18. Electronic Heaters Only - Route thermistor leads through inter-
mediate panel and plug into control panel.
19. Pull high limit wires through oval slot in the intermediate panel.
Reattach the main harness wires to the limit switches wires.
Reattach wires to pressure switch.
20. Replace the heater front door.
21. Replace the top rain guard and secure with screws removed in
step 4.
22. Replace the rear heat shield and secure with screws
removed in step 3.
23. Place access covers on the opposite sides and secure with
screws removed in step 2.
24. Replace heater top.
25. Check for any possible leaks after initial filtration system
start-up.
Heater
Top
Rain
Guard
Flue
Collector
Heat
Exchanger
Left Access
Panel
5 7
1
3 9
Figure 8
Hi-Limit
Wire Harness
Pressure
Switch Tube
Right Access
Panels
Thermostat
Bulbs
12 10 4
2
11 8 6
7