HotZone HZS, HZS15, HZS30, HZS50 Installation & Operation Instructions
Schaefer HotZone™
HZS Series Electric Spot Heater
800-779-3267
sales@schaeferfan.com • www.schaeferfan.com
©2008 Schaefer Ventilation Equipment
High Output Infrared Heater
INSTALLATION & OPERATION INSTRUCTIONS
41344
®
Contents
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1.0 ABOUT YOUR HotZone™ HEATER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
2.0 IMPORTANT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
3.0 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3.1 Mounting Variations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3.2 Mounting the Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
4.0 ELECTRICAL CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
4.1 Heater Element CerlR™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
4.2 Electrical Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
5.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
6.0 SERVICE AND TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
6.1 Element Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
6.2 Lens Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
7.0 CHANGING THE ELEMENT ON YOUR HEATER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
8.0 CONVERTING HEATER TO A DIFFERENT VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
8.1 New Elements with Same Number of Wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
8.2 New Elements with Different Numbers of Wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
8.3 Dual-Use Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
9.0 HZS SERIES PARTS AND DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
9.1 Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
9.2 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Appendix A. OPTIONS, ACCESSORIES, AND CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Appendix B. REPLACEMENT HEATER ELEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Appendix C. QUICK INSTALLATION SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
1. About Your HotZone™ Heater
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Congratulations on purchasing a Schaefer HotZone™ Electric Infrared Heater. Your heater should give you
many years of maintenance-free comfort.
Unlike forced air heaters, HotZone™ heaters have no moving parts and warm people and objects, but not the
air, with infrared radiation.
HotZone™ heaters are the highest intensity gas and electric infrared heaters on the market today and have a
patented, lobster eye inspired, compound reflective lens that focuses and directs the infrared energy into a beam
(or a spot). These lenses are lightweight aluminum grids that look like a four-walled honeycomb structure and
are capable of magnifying without overheating.
Because HotZone™ heaters focus and direct the infrared energy into a beam:
• HotZone™ heaters can be installed out of the way of people and equipment
• The radiant intensity is much less sensitive to distance from the heater (your head doesn't cook while
your feet freeze)
• They deliver between three and five times as much infrared energy to the spot, compared to a similar
powered, unfocused high intensity infrared heater
• They will raise the surface temperature of a 25 square foot area by 20° with a single 3000 watt heater
mounted 10 feet above the target
Plan your installation "with the result in mind" by identifying the area you want heated and how much
temperature increase you need. Imagine the heater as a kind of floodlight and place it so as to cover your target
area with enough heat.
Thermal comfort solutions using Schaefer's HotZone™ heaters and appropriate heater controls:
• Can reduce the energy cost for the same thermal comfort level (apparent temperature) by 30% to 50%
• Help to earn points towards your building's LEED Certification
• Are easy and cost effective to implement in new or existing facilities
• Can compensate for the thermal comfort deficiencies of the central heating system when no other
heating technology can
Electric HotZone™ heaters come in 1500, 3000 and 5000 watt capacities, and have many voltage options in
order to accommodate installation sites with existing wiring and to minimize the expense of new installations.
The different voltage options allow for a variety of heater controls including on/off, staging and others.
All HotZone™ heaters have a variety of options and accessories summarized in the Options, Accessories and
Control chart. Options have to be ordered with the heater, as they are part of the heater while accessories are
additional items that are individually ordered.
HotZone™ electric heaters are listed with ETL and ETLc (for Canada) by ITS and are approved for use in dry
and wet locations throughout the US and Canada.
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2. Important Instructions
When using or working on electric heaters, basic precautions should always be followed to reduce the risk of
fire, electric shock, and injury to persons, including the following:
1. Read all instructions before using heater.
2. To avoid surface burns, do not let bare-skin touch hot surfaces. Keep combustible materials, such as
furniture, pillows, bedding, papers, clothes, and curtains at least 5-1/2 feet from the front of the heater
and avoid contact with the sides, back and top.
3. Extreme caution is necessary when any heater is used by or near children or invalids and whenever the
heater is left operating and unattended. Do not operate any heater after it malfunctions or has been
dropped or damaged in any matter.
4. Burned-out elements cannot be safely repaired and must be replaced.
5. Use heater only as described in this manual. Any other use not recommended by the manufacturer may
cause fire, electric shock, or personal injury.
6. Heater must be installed according to NEC and all local electric codes.
7. Use supply wires suitable for 90º C.
8. Do not insert or allow foreign objects to enter the heater or block any ventilation opening as this may
cause an electric shock or fire, or damage the heater.
9. To prevent a possible fire and to increase the life of the heater, install heater with the junction box on
the low side.
10. A heater has hot and arcing or sparking parts inside. Do not use it in areas where gasoline, paint, or
flammable liquids are used or stored.
11. Do not install closer than the Minimum Clearances to any surface.
12. Do not install less than the Minimum Mounting Height from the floor.
13. Servicing should be done only while the heater is disconnected from the supply circuit.
14. Only use fast-blow fuses. Do not replace fast-blow fuses with less expensive slow-blow fuses or heater
damage may result.
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3. Installation
Prior to installing your HotZone™ heater, the following should be reviewed and adhered to. Compliance with the
following will yield satisfactory heater operation and minimize equipment costs:
1. Heaters must be installed in accordance with National Electric and all local codes. HotZone™ heaters are
ETL listed for fixed and location-dedicated installation both indoors and outdoors.
2. Mount heaters outside the distance to combustibles and at least six feet from the floor. Install heaters so
that items in the infrared beam of the heaters do not overheat.
3. Allow for user angle and directional adjustment, if possible, as heating requirements change.
4. Supply the correct power (voltage/amps/phase) to the heater while allowing for line losses.
5. For an effective and efficient heating solution utilize some or all of the following controls: on/off switches,
power controllers (dimmers), timers, thermostats and other sensors. Many of the elements have multiple
stages allowing for efficient high and low power operation without dimming.
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3.1 Mounting Variations
A Awning Clamp - Adjustable, removable mounting to pipe
and bar structures.
B Vestibule Enclosures - Exterior walls above people and
sidewalks. Comes in many colors.
C Multi-Mount - Standard mounting for walls.
D Outdoor Pole - Vestibule enclosures in the light standard
format for large areas.
E Stand - Temporary and moveable stand with accessory pan
for decorations.
F Deck and Yard - Another use for the standard multi-mount.
G Chain Hung Vestibule - Architectural means to place
heaters alongside lighting equipment.
H Jib Crane - Moveable means to place the heater up to
6 feet from the sidewall. Base extension allows for
re-direction from the floor.
I Small Stand - For shops and garages.
J Conduit Mount - Fastest way to securely hang a heater
and simultaneously provide electric service.
K Cart - Easy to use and move.
L SkyHook - An upside down "ceiling stand" that supports a
heater within a 16 foot wide circle.
M Flush Mount - Eave and T-Bar locations both inside and
out where heater can pivot down and out.
The following list describes the mounting variations for installing your HotZone™ heater. Schaefer sells some,
but not all, of the mounting accessories described below.
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