Instruction manual

B. Installation: Plumbing
Pipe the heater as shown in Figure 2 to the inlet and
outlet openings on the right side. Connect the heater
in line between the filter discharge and pool. The
water line coming from the filter should be connected
to the heater inlet, and the discharge line to the pool
should be connected to the outlet. The pool will not
heat properly unless it is plumbed correctly. If plastic
pipe is used, it should be suitable for at least 122°F
(50 °C).
A plumbing bypass around the pool heater is not
necessary unless flow rates though the heater exceed
80 GPM (5 L/sec). A minimum flow rate of 20 GPM
(1.26 L/sec) is required. Lack of sufficient flow will not
allow the flow switch to activate the heater.
It may be necessary, in larger Olympic-sized or public
pools, to use two or more heaters to obtain sufficient
KW capacity. If so, the heaters must be placed in
parallel, so that each heater takes equal flow.
3.0 ELECTRICAL INSTALLATION
First: 1. Check nameplate rating to insure the
heater matches your electrical supply.
2. CHECK ELECTRICAL CONNECTIONS
TO ALL COMPONENTS within the heater
for tightness. These can become loose
during shipment and handling.
3. Check components for any moisture, rust,
or dust which may have accumulated
during shipping, and clean or dry where
necessary.
All pool heaters covered in this manual have integral
thermostats, transformers, contactors and sequencers
where required.
All other internal connections are completed and
tested at the factory.
Wiring diagrams on pages 6 through 14 show internal
wiring and required field connections for various
models. Consult your local electrical code for proper
wire and conduit sizes, and other local requirements.
Do not connect the pool heater to, or operate at, a
voltage other than the voltage rated on the nameplate.
Bring wires of adequate size from a fused disconnect
switch or circuit breaker with an ampere rating of
125% of the ampere rating shown on heater
nameplate. Refer to Table 1 for wire sizes. Connect
the power conductors to bus assembly on inside of the
heater.
Ground wires must be insulated copper conductor and
the same size as supply wiring, but not less than #12
AWG (4 mm
2
).
Table 1
WIRE SIZE: AWG(mm
2
)
KW
220V/3Ø 380V/3Ø 415V/3Ø
12 8(10) 10(6) 10(6)
15 8(10) 10(6) 10(6)
18 6(16) 8(10) 8(10)
24 4(25) 8(10) 8(10)
30 3(35) 6(16) 6(16)
36 2(35) 6(16) 6(16)
45 1(50) 4(25) 4(25)
54 3/0(95) 3(35) 3(35)
57 3/0(95) 3(35) 3(35)
60 3/0(95) 2(35) 3(35)
72 4/0(120) 1(50) 2(35)
Suggested size for insulated copper conductor
wires. Based on 125% correction factor for wire
with 90°C insulation.
A. To Connect Pool Heater to Power Supply
These pool heaters have branch supplemental fusing
already installed in the element circuitry; see wiring
diagrams. To connect to the power supply, one needs
only to protect the main supply lines, either with a circuit
breaker or fused disconnect switch (Figure 1).
Suggested wire sizes are shown in Table 1.
Ground
Line 1
Line 2
Ground Line 1
Line 2
or
Ground
Ground
or
ØA
ØB
ØC
ØA
ØB
ØC
Wiring Diagram: Single-Phase Models
Wiring Diagram: Three-Phase Models
Figure 1
3