Installation Guide

3
110VAC
Power
Supply
See Manufacturers Wiring Diagram on Motor
Grounding Conductor
(Pressure Wire Connector)
GFCI
Motor
Green/Ground
White/Neutral
Black/Hot
Always protect tub from construction damage by using a protective cover. Damage, including
chips and scratches, incurred at the jobsite is excluded from warranty, but may be repaired by
qualied technician at the owner’s expense. Do not stand in the tub or store materials in the tub
during construction. Do not store tub in temperatures below 32 degrees Fahrenheit. Proper waste
and overow installation is the responsibility of the installer. MTI does not warrant leaks associated with
improper waste and overow installation.
There are many possible ways to install your new MTI tub, and some may require different framing than
the following instructions. Keep in mind that the framing should always provide a level surface for the rim of
the tub and sufcient space below the tub for bedding compound. Access must be provided to each pump,
air blower and / or electrical component on your tub. The access panels must have a minimum size
of 16" x 14" for installation and future servicing of the equipment. MTI will not authorize any service
unless clear access is available. The installer is responsible for providing access for any future
servicing. The bolts/screws through the mounting feet on the pump or blower may be loosened or
removed once the tub is in place if necessary for future servicing.
Each MTI tub may be ordered with a wide array of options. If your tub has more than two power cords, the
power cords will be gathered together with a bright yellow hang tag to indicate the number of power cords to
be plugged in for proper operation. See electrical specications on page 4.
Additional access to plumbing xtures is strongly recommended. It is the responsibility of the installer to comply with
local plumbing codes regarding pump and plumbing access. Note: Do not allow any material such as insulation
within 8" of pump. Pump and blower must have sufcient air space surrounding them for circulation.
ELECTRICAL INSTALLATION INSTRUCTIONS
Warning - When installing or using electrical products, basic precautions should always
be followed, including:
1. All MTI whirlpools, air baths and soaking tubs equipped with an inline heater require dedicated
110V circuits for the electrical components. Please see Electrical Specifications on page 4. Many
options may be combined on a 20 amp circuit, as long as total amps of combined options are
considered. If your tub has more than two power cords, the power cords will be gathered together
with a hang tag indicating how many items must be plugged in for proper operation. This circuit
must be connected to a supply that is protected by a ground fault circuit interrupter (GFCI).
Such a GFCI should be provided by the installer and tested on a routine basis. To test the GFCI,
push the test button. The GFCI should interrupt power. Push the reset button. Power should be
restored. If the GFCI fails to operate in this manner, there is a ground current flowing, indicating
the possibility of electric shock. Do not use this unit. Disconnect the unit and have the problem
corrected by a qualified service representative before using.
2. Every MTI whirlpool pump, heater or air blower is supplied with a 29" grounded plug to be plugged
into a separate GFCI outlet. Under no circumstance should you alter the provided supply cord.
Products do not require hardwiring or separate, wall-mounted switch.
3. A pressure wire connector is supplied on the exterior of the pump to permit connection of a
No.8AWG (8.4mm) solid copper bonding conductor* between this unit and all other electrical
equipment and exposed metal in the vicinity as needed to comply with local requirements.
*NOTE: Air blowers do not require a bonding conductor.
WARNING: Unauthorized modification may cause unsafe operation and poor performance of the
product. Do not relocate the whirlpool pump, or make other modifications to the whirlpool system,
as this could adversely affect the performance and safe operation of the whirlpool. MTI shall not be
liable under its warranty or otherwise for personal injury or damage caused by any such unauthorized
modification.