Takagi T-H3M-IN/OS - Manual (Page 25)

25
Page
Installation
Installation Manual
Follow the electrical code requirements of the local authority having jurisdiction
In the absence of such requirements, follow the latest edition of the National
Electrical Code ANSI/NFPA 70 in the US or the latest edition of CSA C221
Canadian Electrical Code Part 1 in Canada WARNING
When servicing or replacing parts within the water heater, label all wires prior to
disconnection to facilitate an easy and error-free reconnection Wiring errors can
cause improper and dangerous operation Verify proper operation after servicing
CAUTION
• The condensate drain is at atmospheric pressure (non-pressurized) and
therefore 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
condensate drain (neutralizer and drain tube) must be at a lower elevation
than the water heater to prevent condensate water from building up inside
the heat exchanger.
• Condensate cannot be effectively neutralized 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 improperly
• The Neutralizer cartridge is designed to last for 3 years before replacement
However, the actual life of the neutralizer may vary, depending on the
application and usage Please ensure that the cartridge is properly replaced
before the neutralizer elements have been completely 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
WARNING
Outdoor model
Bottom view of water heater View of electrical
connections of water heater
Indoor model Connect
Power supply
120VAC, 60Hz
Ground
Green screw
ELECTRICAL CONNECTIONS
All Indoor models come with a power plug instead of a junction box. The following procedure is for
the outdoor model only.
1. The water heater must be electrically grounded Do not attach the ground wire to either the gas or
the water piping
2. The water heater requires 120 VAC, 60 Hz electrical power supply that is properly grounded
• A proper disconnect (ie 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 exactly 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 water heater from power surges