Important Instructions; Installation Instructions - Marley WD02112A Installation, Operation & Maintenance Instructions Manual

WHEN usiNg ELECTriC APPLiANCEs, BAsiC PrECAu-
TioNs sHouLD ALWAys BE foLLoWED To rEDuCE THE
risK of firE, ELECTriC sHoCK, AND iNJury To PEr-
soNs, iNCLuDiNg THE foLLoWiNg:
1. read all instructions before installing or using this heater.
2. This heater is a commercial/industrial product not intended
for use in a residential setting.
3. This heater has hot and arcing or sparking parts inside and
is not intended for use in hazardous atmospheres where
flammable vapors, gases, liquids or other combustible
atmospheres as defined in the National Electrical Code are
used or stored. failure to comply can result in explosion or
fire.
4. This heater is hot when in use. To avoid burns, do not let
bare skin touch hot surfaces. Keep combustible materials,
such as furniture, pillows, bedding, papers, clothes, etc. and
curtains at least 3 feet (0.9 m) from the front of the heater.
5. Extreme caution is necessary when any heater is used by or
near children or invalids and whenever the heater is left
operating and unattended.
INSTALLATION
INSTRUCTIONS
To prevent a possible fire, injury to persons or damage to the
heater, adhere to the following:
Important Note: This heater must be installed by a qualified
person.
1. Disconnect all power coming to heater at main service panel
before wiring or servicing.
2. All wiring procedures and connections must be in accor-
dance with the National and Local Codes having jurisdiction
and the heater must be grounded.
CAUTION: All electrical conduit and fittings must be listed for
watertight applications to maintain the NEMA 4X enclosure
classification to prevent hose-directed water from entering elec-
trical box.
3. Verify the power supply voltage coming to heater matches
the ratings as shown on the heater nameplate.
CAUTION: ENErgiziNg HEATEr AT A VoLTAgE grEATEr
THAN THE VoLTAgE PriNTED oN THE NAMEPLATE WiLL
DAMAgE THE HEATEr AND VoiD THE WArrANTy AND
CouLD CAusE A firE.
General
Heater Location Instructions:
Arrange units so their discharge air streams:
A. Are subjected to minimum interference from columns,
machinery and partitions.
B. Wipe exposed walls without blowing directly at them.
C. Are directed away from room occupants in comfort heating.
D. Are directed along the windward side when installed in a
building exposed to a prevailing wind.

IMPORTANT INSTRUCTIONS

WARNING
WARNING
!
6. Do not operate any heater after it malfunctions. Disconnect
power at service panel and have heater inspected by a rep-
utable electrician before using.
7. Do not use outdoors.
8. To disconnect heater, turn controls to off, and turn off
power to heater circuit at main disconnect panel.
9. Do not insert or allow foreign objects to enter any ventilation
or exhaust opening as this may cause an electric shock, fire,
or damage to the heater.
10. To prevent a possible fire, do not block air intake or exhaust
in any manner.
11. 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.
12. When installing, see iNsTALLATioN iNsTruCTioNs for
additional warnings and precautions.
13. for safe and efficient operation, and to extend the life of your
heater, keep your heater clean - see MAiNTENANCE
iNsTruCTioNs.
NOT FOR RESIDENTIAL USE.
!
4. To reduce the risk of fire, do not store or use gasoline or other
flammable vapors and liquids in the vicinity of the heater.
5. The ceiling or wall mounting structure and the anchoring pro-
visions must be of sufficient strength to support the combined
weight of the heater and mounting bracket. see
specificatinos for total weight.
6. Heater must be mounted for horizontal air flow only. The
heater must be mounted at least 7' (2134 mm) above the
floor to avoid accidental contact with the fan blade which
could cause injury.
7. Keep at least 5' (1524 mm) clearance in front of the heater.
refer to figure 2 for side, top and back clearance require-
ments.
8. Do not mount mercury type thermostat directly on unit.
Vibration could cause heater to malfunction.
9. outlet grille is factory formed with louvers set at a 45 ° angle.
This is the minimum angle allowable to avoid potential over-
heating. Louvers may be opened up to 90° if desired to allow
for better air throw by bending each louver outward. see
figure 3.
if not provided with internal thermostat, locate remote thermostat
on interior partition walls or posts away from cold drafts, internal
heat sources and away from heater discharge air streams.
Figure 1
2