Hubbell Electric Heater JHX Installation Manual

INSTALLATION, OPERATION, AND

MAINTENANCE MANUAL FOR

THE HUBBELL MODEL JTX / JHX

TANKLESS BOOSTER HEATER

ELECTRIC HEATER COMPANY

* The Hubbell Model JTX is designed for use with conveyor and flight type dish
machines. This product is not intended for use with door style dish machines.

Edition 2012A

HUBBELL

ELECTRIC HEATER COMPANY

P.O. BOX 288

STRATFORD, CT 06615-0288

PHONE: [phone]
FAX: [phone]

INTERNET: http://www.hubbellheaters.com

Important Safety Information

1. You must read and follow all instructions. Serious bodily injury or death could occur
if you ignore this warning.

2. All circuit breakers and/or disconnect switches servicing the heater must be turned off
when installing, uninstalling, or repairing this booster heater.

3. The Hubbell Tankless Booster Heater must be grounded.

4. The unit must be installed by a licensed electrician and plumber.

5. The unit must be wired in accordance with the current version of the National
Electrical Code (US) or Canadian Electric Code (Canada).

6. This installation must comply with all national, state, and local plumbing and
electrical codes.

7. When the heater is not within sight of the electrical circuit breakers, an additional
local means of disconnection of all ungrounded conductors must be provided that is
within sight of the appliance or a circuit breaker lockout must be used. (Ref. NEC

422.31)

8. Water Quality Requirements – Recommended water hardness is 4 to 6 grains of
hardness per gallon (GPG). Water hardness above 6 GPG should be treated by a
water conditioner (water softener or in-line treatment). Water hardness below 4 GPG
also requires treatment to reduce potential corrosion. Excessive GPG will result in
higher operating and maintenance costs and will reduce product longevity. Chlorides
must not exceed 50 parts per million (ppm). Excessive chlorides will result in
metallic corrosion and will reduce product longevity. Water treatment has been
shown to reduce costs associated with de-liming the booster as well as reducing
metallic corrosion. Product failure caused by these conditions is not covered under
warranty. See warranty for complete details.

9. The booster heater is factory set at 185°F for booster water heating applications. This
results in the possibility of a scalding water injury. A full thickness skin burn can
occur in less than one second of exposure to water at this temperature.

10. *Disclaimer: The Hubbell Model JTX is designed for use with conveyor and flight

type dish machines. This product is not intended for use with door style dish
machines.

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