Connect the hot lead of the power supply to the black wire, the neutral lead to the white wire, and the ground wire to the green wire (See Figure 23).
A time clock controlling the filter pump should have a low- voltage Fireman’s Switch that switches off the heater at least 15 minutes before shutting off the pump.
| White to White | |
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| Green (Ground) |
| Black to | to |
| Green (Ground) | |
| Black | |
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| Cutout for |
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| Conduit from |
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| Fireman's Switch |
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| Bonding |
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| Wire |
Bonding Lug |
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Bonding Wire |
| Wiring Harness |
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| to Control Box |
View From Below |
| View From Above |
(Exterior) | Wire into bottom | (Interior) |
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| |
of
in Flexible Conduit
FIGURE 23: Field Wiring
FIREMAN’S SWITCH CONNECTION
NOTICE: If, while there is 120VAC connected to the heater, you touch either 120VAC terminal with any 24VAC wire that is connected to the control board (including the Fireman’s Switch jumper), you will immediately destroy the control board and void the warranty.
NOTICE: When using a timer and Fireman’s Switch, the heater’s power supply should come from the load side of the timer. The Fireman’s Switch completes the circuit for the low voltage safety switches. It DOES NOT get any power from the 115 volt power supply.
Connect the Fireman’s switch to the heater as follows:
1.Turn off power to heater at main circuit breaker panel.
2.Unbolt and remove the upper jacket halves (see Figure 3, Page 5).
3.Open control box cover (see Figure 24).
4.Remove the
5.Connect the wires between the Fireman’s Switch termi- nals on the heater and those on the time clock using
18 gauge wire with a minimum 3/64” thick insulation rated for a temperature rise of at least 105°C. Route the wires out through the knockout on the bottom of the Control Box. Use a 90° conduit el and conduit run out through the cutout on the Lower Enclosure, next to the Junction Box (see Figure 23).
BK
TRANS
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| Y | 24VAC | SEC | PRIM | 120VAC |
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| Y | ||||
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| VAL TH IND GND 24VAC | 24VAC | FS | THERMISTOR | FUSE | FUSE |
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OPERATING CONTROL |
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| TRANS | |||
BK |
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| MEMBRANE PAD |
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JMP3 |
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| CONNECTION |
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| ENABLE TOGGLE |
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1 | DISABLE TOGGLE | VERSION 1 PAD |
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| CONTROL CENTER | SPA CONTROL |
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| W | ||
TRANS |
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| Y | Y |
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VENT
PRES | S |
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T |
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PILOT |
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TRANS
L1
F1
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| TERMINAL BOARD |
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| TRANS | W | TRANS |
F |
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S |
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I |
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R | W |
| W |
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E | I | L2 |
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M FL | T |
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A | C |
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N | H | BM | W |
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S |
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NEUTRAL
Time Clock or Remote
BK | W |
| G |
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GND
(Purchase Separately –
Supplies Power to
Circulator Pump)
FIGURE 24: Open Control Box Cover
JUNCTION BOX
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| Fireman's Switch |
(HOT) | (NEU) | (GND) |
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| Completes the heater |
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| Board Circuit. | |||
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| 24 Volt AC Control |
120VAC | NEUTRAL | GROUND |
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| DO NOT connect this |
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| circuit to 115 Volt AC! | |||
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| 24VAC | ||
FIGURE 25: Fireman’s Switch Connections
21