Sterling ME - Manual (Page 7)

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Make certain that the structure
to which heater is to be mounted is capable
of safely supporting its weight. Under no
circumstances must the gas lines or the
electrical conduit be used to support the heater.
Failure to heed these warnings may result in
property damage, personal injury or death.
Open all disconnect switches
before installing the unit. Failure to do so may
result in personal injury or death from electrical
shock.
ACCESS PANEL REMOVAL
Unless your unit is equipped with optional hinged access
doors, the air handler sections are equipped with access
panels that are held in place with two “grip” latches.
To remove these access panels: use a slotted head
screw driver to turn the latch screwhead counter-
clockwise. Using the handle provided, push the panel
upwards. Pull the bottom of the panel out and lower the
panel to disengage it from the top lip.
To replace access door panels: guide the panel door
upwards on the tracks, and push up into the top lip,
swing and lower the panel in place until it engages with
the bottom panel. Turn the screwhead on each latch
clockwise. The screw must turn freely one quarter turn
before resistance is felt in order for the lock to engage. If
latch does not hold, turn screw counter-clockwise several
turns and repeat the above procedure.
The furnace section service panel is easily accessible
- simply remove the mounting screws on the lower
jacket panel to disengage and remove the panel;
repeat procedure for installing back in place. See the
maintenance section and the duct furnace manual
for more information regarding burner drawer
removal/accessibility.
VENTING†
All venting installations shall be in accordance with the
latest edition of Part 7, “Venting of Equipment”, of the
National Fuel Gas Code, ANSI Z223.1-1996 (or the latest
edition), or applicable provisions of local building codes.
C A R B O N M O N OX I D E ! Yo u r
venting system must not be blocked by any
snow, snow drifts or any foreign matter. Inspect
your venting system to ensure adequate
ventilation exists at all times! Failure to heed
these warnings could result in Carbon Monoxide
Poisoning (symptoms include grogginess,
lethargy, inappropriate tiredness, or flu-like
symptoms).
The venting is an integral part of
the unit and must not be altered in the fi eld.
The units are available in two types of venting processes
- Natural or Power Vented. Natural Vent units are
equipped with a draft diverter; air for combustion enters
in through an opening in the draft diverter, and products
of combustion are discharged through a fl ue vent (fi nal
connections fi eld installed). The High Effi ciency Power
Vented units feature a factory installed power venter and
sealed fl ue collector that controls combustion and excess
air during the on-cycle.
VENT SYSTEMS - TERMINATION CLEARANCE REQUIREMENTS
Minimum Clearances for
Structure Termination Locations
Door, window or 4 feet below
any gravity air inlet 4 feet horizontally
1 foot above
Forced air inlet within 10 feet 3 feet above
Adjoining building or parapet 6 feet
Adjacent public walkways 7 feet above grade
*If the vent terminal is to be installed near ground level, the vent
terminal must be positioned at least six inches (152mm) above the
maximum anticipated snow depth.
†Refer to the Indoor Duct Furnace Manual for more
venting requirements.
AIR FOR COMBUSTION
Appliances shall be installed in a location in which the
facilities for ventilation permit satisfactory combustion of
gas, proper venting, and the maintenance of ambient
temperature at safe limits under normal conditions for use.
Appliances shall be located in such a manner as not to
interfere with proper circulation of air within the confi ned
space. When buildings are so tight that normal infi ltration
does not meet air requirements, outside air shall be
introduced per Sections 1.3.4.2 and 1.3.4.3 of ANSI
Z223.1 for combustion air requirements. A permanent
opening or openings having a total free area of not less
than one square inch per 5,000 Btu/Hr of total input
rating of all appliance within the space shall be provided.
Refer to the Indoor Duct Furnace Manual supplied with
your unit for more requirements.
DUCT CONNECTIONS
All ductwork must be properly supported so that no strain
is put on the unit. Do not alter or bend the discharge duct
fl anges supplied on your make-up air unit.
Duct connections must have a removable access panel
in the duct which is connected to a duct furnace. The
duct openings shall be accessible when the unit is
installed in service, and shall be of such size that smoke
or refl ected light may be observed inside the casing to
indicate the presence of leaks in the heating element.
The covers for the panels shall be attached in such a
manner as to prevent leaks. Ducts (or optional outside air
hoods) exposed to the outdoors must be insulated and
sealed to prevent water from entering either the unit or
building through the duct.