Model No. MWUH
Horizontal / Vertical Unit Heater
(Field Adjustable from 1.9KW @ 208V to 5KW@ 240V
WARNING
Dear Owner,
Congratulations! Thank you for purchasing this new heater manufactured by a division of Marley
Engineered Products. You have made a wise investment selecting the highest quality product in the heat-
ing industry. Please carefully read the installation and maintenance directions shown in this manual.
You should enjoy years of efficient heating comfort with this product from Marley Engineered Products...
the industry’s leader in design, manufacturing, quality and service.
... The Employees of
Marley Engineered Products
Read Carefully -
These instructions are written to help
you prevent difficulties that might arise during installation
of heaters. Studying the instructions first may save you
considerable time and money later. Observe the following
procedures, and cut your installation time to a minimum.
TO REDUCE RISK OF FIRE, ELECTRIC SHOCK OR HEATER FALLING:
1.
Use minimum 60° copper wire only.
2.
Heater air flow must be directed parallel to, or away from,
adjacent walls.
3.
Observe wall, floor, and ceiling clearance requirements.
4.
All wiring must conform to national and local electrical codes
and the heater must be grounded as a precaution against
possible electrical shock. Heater circuit must be protected
with proper fuses. See Table 1 on page 3.
5.
The mounting structure and the anchoring hardware must be
capable of reliably supporting the weight of the heater and, if
used, the mounting bracket.
6.
All electrical power must be disconnected at the main service
box before installing, inspecting, cleaning or servicing the
heater. This is a precaution to prevent possible electrical
shock.
7.
This heater is not suitable for use in hazardous locations as
defined by the National Fire Protection Association (NFPA).
This heater has hot and arcing (sparking) parts inside. Do not
use in areas where gasoline, paint, or flammable liquids
are used or stored.
8.
This heater is not suitable for use in corrosive atmospheres
such as marine, green houses or chemical storage areas.
9.
This heater must be mounted at least 6 feet (1829 mm) off the
floor.
10. This unit only operates on 240 or 208 volts (AC), 60Hz.
Improper installation or failure to follow the procedures out-
lined in this instruction manual can result in serious electrical
shock.
Installation & Maintenance Instructions
SAVE THESE INSTRUCTIONS
!
FILE #E21609
1
