Determine boiler location – Lochinvar Kight XL 400-801 User Manual
Page 8

8
The Outdoor Knight XL gas manifold 
and controls met safe lighting and other 
performance criteria when the boiler 
underwent tests specifi ed in ANSI Z21.13 
– latest edition.
Do not install the unit under a deck.
Do not install the unit in a well, stairwell, 
alcove, courtyard or other recessed area.
Do not install outdoor units on stack 
frames. Failure to comply with the above 
may result in severe personal injury, death 
or substantial property damage.
Installation must comply with:
• Local, state, provincial, and national codes, laws,
regulations, and ordinances.
• National Fuel Gas Code, ANSI Z223.1 – latest edition.
• Standard for Controls and Safety Devices for Automatically
Fired Boilers, ANSI/ASME CSD-1, when required.
• National Electrical Code.
Before locating the boiler, check:
1. Check for nearby connection to:
• System water piping
• Gas supply piping
• Electrical power
2. - Keep venting areas free of obstructions.
- Keep area clean and free of combustible and fl ammable
materials.
- To avoid a blocked air inlet or blocked fl ue condition,
keep the outdoor air inlet and fl ue outlet clear or leaves,
debris, etc.
4. If a new boiler will replace an existing boiler, check for
and correct system problems, such as:
• System leaks causing oxygen corrosion or heat exchanger
cracks from hard water deposits.
• Incorrectly-sized expansion tank.
• This unit is not intended for installations where
temperatures may reach below 32°F (0°C). Exposure to 
freezing temperatures will cause the system and boiler 
to freeze and leak.
ƽ WARNING
NOTICE
1
Determine boiler location
Do not install outdoor models directly on 
the ground. You must install the outdoor 
unit on a level concrete, brick, block, or 
pressure-treated wood platform.
Do not locate unit so that high winds 
can defl ect off of adjacent walls, buildings 
or shrubbery causing recirculation. 
Recirculation of fl ue products may cause 
operational problems, bad combustion or 
damage to controls. Locate unit at least 
3 feet (0.91m) from any wall or vertical 
surface to prevent wind conditions from 
affecting performance.
CAUTION
ƽ
CAUTION
3. Check area around the boiler. Remove any combustible 
 
materials, gasoline and other fl ammable liquids.
Outdoor Knight XL Installation & Operation
Manual
Outdoor models must be installed outdoors 
only and must use the outdoor vent 
assembly supplied by the manufacturer. 
Personal injury or product damage may 
result if any other venting is used or if an 
outdoor model is used indoors. All covers, 
doors and jacket panels must be properly 
installed to ensure proper operation and 
prevent a hazardous condition.
ƽ WARNING
ƽ WARNING
The unit must not be installed in an area 
that is enclosed by walls or a fence that 
will block free wind movement around 
the appliance. Free movement of wind 
around the outdoor unit is required 
to carry away the fl ue products and 
provide combustion air. The fl ue outlet/
combustion air inlet of an outdoor unit 
must not be installed closer than 10 feet 
from an inside corner of an L-shaped 
structure. Walls or enclosed fencing may 
cause eddy currents which can recirculate 
the fl ue products into the combustion 
air inlet. Recirculation of fl ue products 
may cause operational problems, bad 
combustion or non-warrantable damage 
to controls.
Locate the unit at least 3 feet (0.91m) 
outside any overhang.
ƽ
CAUTION
CAUTION
Do not install in locations where rain 
from building runoff drains will spill onto 
the unit.
Do not locate the unit so that water 
from sprinklers may spray directly onto 
it. Water may damage controls or other 
electrical components.
Failure to keep boiler area clear and free 
of combustible materials, gasoline, and 
other fl ammable liquids and vapors can 
result in severe personal injury, death, or 
substantial property damage.
ƽ WARNING
This product contains a condensate 
management and disposal system that 
may be subject to freezing if exposed 
to sustained temperatures below 32°F. 
Precautions should be taken to protect the 
condensate trap and drain lines during 
extended periods of outdoor temperatures 
below 32°F.
