Chromalox PF497-1 specifications Assembly Instructions, Wiring

IMPORTANT INSTRUCTIONS

When using electrical appliances, 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 this heater.

2.This heater is hot when in use. To avoid burns, do not let bare skin touch hot surfaces. If provided, use handles when moving this heater. Keep combustible materials, such as furniture, pil- lows, bedding, papers, clothes, and curtains at least 3 feet (0.9 m) from the front of the heater and keep them away from the sides and rear.

3.Extreme caution is necessary when any heater is used by or near children or handicapped individuals and whenever the heater is left operating and unattended.

4.Always disconnect heater when not in use.

5.Do not operate any heater with a damaged cord or plug or after the heater malfunctions, has been dropped or damaged in any manner. Return heater to authorized service facility for exami- nation, electrical or mechanical adjustments, or repair.

6.Do not use outdoors.

7.This heater is not intended for use in bathrooms, laundry areas and similar indoor locations. Never locate heater where it may fall into a bathtub or other water container.

8.Do not run cord under carpeting. Do not cover cord with throw rugs, runners or the like. Arrange cord away from traffic area and where it will not be tripped over.

9.To disconnect heater, turn thermostat off, then remove plug from outlet.

10.Connect to properly grounded outlets only.

11.Do not insert or allow foreign objects to enter any ventilation or exhaust opening as this may cause an electric shock, fire or damage the heater.

12.To prevent a possible fire, do not block air intakes or exhaust in any manner. Do not use on soft surfaces, like a bed, where opening may become blocked.

13.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.

14.Use this heater only as described in this manual. Any other use not recommended by the manufacturer may cause fire, electric shock or injury to persons.

15.This heater is not intended for use with an extension cord.

16.SAVE THESE INSTRUCTIONS.

ASSEMBLY INSTRUCTIONS

The Chromalox DRA is shipped fully assembled. The handle is		Handle
assembled in the lower position (dotted line Fig. 1). To position
handle in the upright position, remove bolts securing the handle to
the support legs, lift handle until the handle holes line up with the
upper holes in the support legs and insert bolts to secure the han-
dle in the full upright position.
Tools Required –	Crescent Wrench
–	Phillips Screwdriver

Direction of

Airflow

Bolt ()

Nut ()

Support Leg

Figure 1

WIRING

ELECTRIC SHOCK HAZARD. Disconnect all power before installing or servicing heater. Failure to do so could result in personal injury or property dam- age. Heater must be effectively grounded in accor- dance with the National Electrical Code, NFPA 70.

1.Use heater only on the voltage and frequency specified on the nameplate.

2.All wiring should be done in accordance with local codes and the National Electrical Code by a qualified person.

3.Branch circuit wire for connection to heater must be at least 90°C wire.

4.The top access panel is secured by 4 screws that must be loos- ened to gain access.

5.A ground terminal is provided near the power terminal board. The ground wire should be connected before other connections are made.

6.Refer to Chart A for proper size “SO” grade cable.

7.A proper strain relief must be used with “SO” grade cable.

8.Dragon heaters are factory pre-wired for 3-phase delta opera- tion. Some units can be converted to single phase operation by changing the wiring. Refer to Chart A for those heaters that can be converted to single phase. The appropriate wiring diagram is also located on the back of the wiring compartment cover.

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