EWHB Series Industrial / Commercial Electric Unit Heater /Operating Instructions, Page 1 of 2
23-2180-83-5REZ
OPERATING INSTRUCTIONS
RISK OF FIRE / EXPLOSION
This heater should not be used in potentially explosive atmospheres. Do not use in areas where gasoline,
paint or flammable liquids are used or stored.
Keep electrical cords, drapery, furnishings, insulation and other combustibles at least 3 feet (0.9m) from the
front of the heater and away from the sides, rear and top.
To prevent a possible fire, do not block or allow foreign objects to enter air intakes or exhaust in any
manner.
ELECTRIC SHOCK HAZARD
Keep electrical enclosure cover tightly closed while in operation.
Do not operate heater after a malfunction. Disconnect power at service panel and have heater inspected by
a reputable electrician before reusing.
Use this heater only as described in this manual. Any other use is not recommended by the manufacturer
and may result in fire, electric shock or personal injury.
RISK OF INJURY / BURN
The heater and discharge air are hot when in use. To avoid burns, do not let bare skin touch hot surfaces.
Do not attempt to service or clean heater while unit is operating as there is a hazard from electric shock,
injury from operating fan blade and burns from hot heating elements.
The unit is designed to give years of safe, trouble-free operation when properly installed and maintained. Please
read the following guidelines to ensure reliable operation:
1.
Confirm proper mechanical and electrical installation before operation of the heater.
2.
This unit heater may be operated at ambient temperatures of 80°F (26.7°C) or less.
3.
Make sure the wiring enclosure cover is closed securely.
4.
Set the temperature control thermostat to a setting above the current room temperature.
5.
If the heater is provided with a selector switch, it must be in the ON position.
6.
Energize the heater electrical supply circuit.
7.
The heater and fan should come on.
8.
Check for the correct fan blade rotation. If air is not discharging through the louvers, interchange any two of the three
field supplied power leads on three phase units only.
9.
Since the heater is equipped with a built-in time delay relay, the fan will remain in operation for about a minute to cool
the elements after the heater is switched off either by the thermostat or the selector switch. Do not turn the heater off at
the main disconnect switch, as this will prevent the fan from cooling elements.
