John Wood Takagi - 320H-520H - Manual (Page 17)

17
WARNING
The condensate drain is at atmospheric
pressure (non-pressurized) and there-
fore must be allowed to drain freely with
gravity only. Please ensure that there
are no blockages along the condensate
drain tube. All portions of the conden-
sate drain (neutralizer and drain tube)
must be at a lower elevation than the
520H to prevent condensate water from
building up inside the heat exchanger.
Condensate cannot be effectively neu-
tralized if the neutralizer elements inside
the Neutralizer accessory have been
completely consumed. If this happens,
Condensate will remain acidic and can
possibly cause damage to items such as
pipes, concrete, etc., if drained improp-
erly.
The Neutralizer cartridge is designed
to last for 3 years before replacement.
However, the actual life of the neutralizer
may vary, depending on the applica-
tion and usage. Please ensure that the
cartridge is properly replaced before the
neutralizer elements have been com-
pletely consumed.
All preventative measures and safety
practices must be adhered to when
draining condensate. The manufacturer
will not be responsible for any damage
caused by condensate.
A drain pan, or other means of protection
against water damage, is required to be
installed under the water heater in case
of leaks. •
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Electrical Connections
WARNING
Follow the electrical code requirements of
the local authority having jurisdiction. In
the absence of such requirements, follow
the latest edition of CSA C22.1 Canadian
Electrical Code, Part 1.
CAUTION
When servicing or replacing parts within the
520H, label all wires prior to disconnection
to facilitate an easy and error-free recon-
nection. Wiring errors can cause improper
and dangerous operation. Verify proper
operation after servicing.
1. The 520H must be electrically grounded. Do not attach
the ground wire to either the gas or the water piping.
2. The 520H requires 120 VAC / 60 Hz electrical power sup-
ply that is properly grounded.
A proper disconnect (i.e. on/off switch, power plug,
etc.) controlling the main power to the water heater
must be provided for service reasons. (Must comply
with local codes).
Connect the power supply to the water heater exact-
ly as shown in the wiring diagram;
3. A green screw is provided in the junction box to ground
the connection.
4. Can be hardwired or wired to a plug-in.
5. The use of a surge protector is recommended in order to
protect the unit from power surges.
Ground
Connect Power supply
120 VAC / 60 Hz
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