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regardless of air density. Good quality combustion and high efficiency are assured without special adjustment or changes to the heater.
2J. Electric Wiring
2J-1. Electrical Power
The
14). Grounding must be provided as required by the prevailing electrical code.
Connect wiring inside the junction box , which is on the right side of the heater and is accessible through the door opening. Line voltage connections must be made within this box. A labeled green grounding screw is provided in the junction box for a grounding wire (see Figure 15).
Wiring should include a means to prevent operation of the heater when there is no water flow. This is typically done with a time clock “Fireman’s Switch” as discussed in Section
ATTACH |
GROUNDING |
WIRE TO GREEN |
GROUNDING |
SCREW |
Figure 15. Field Wiring Connections.
Figure 16. Typical Time Clock Wiring.
Figure 17. Terminal Block for Fireman’s Switch or Remote Control Wiring.
2J-2. Bonding
The National Electrical Code and most other codes require that all metallic components of a pool structure, including reinforcing steel, metal fittings and above ground equipment be bonded together with a solid copper conductor not smaller than a number 8 wire. The heater, along with pumps and other such equipment must be connected to this bonding grid. A special labeled bonding lug is provided on the right side of the heater to accommodate this requirement.
2J-3. Auxiliary Time Clock Wiring
If a time clock is provided to control the pool filter pump, it should have a separate
24 VAC control circuit through this switch as shown in Figures 16 and 17. To do this, remove the “jumper” from the terminal block in the heater control compartment. Connect two wires to this terminal block and route them to the Fireman’s switch at the time clock. Provide wiring of at least 18 gauge with insulation at least 3/64" thick and having a temperature rating of at least 90oC.
2J-4. Remote Operation
The
An interrupt
17)and connecting the two wires from the remote to the two terminals on the terminal block. This type of remote control will turn the heater on or off, but will not switch between the two temperature controllers on the