112157-01A
6
For more information, visit www.desatech.com
For more information, visit www.desatech.com
INSTALLATION
Installation must conform with local codes or, in the
absence of local codes, with the current standard
CAN/CGA B149.1 Natural Gas Installation Code or
CAN/CGA B149.2 Propane Installation Code
NOTICE: This heater is intended for use as supple-
mental heat. Use this heater along with your primary
heating system. Do not install this heater as your
primary heat source. If you have a central heating
system, you may run system’s circulating blower
while using heater. This will help circulate the heat
throughout the house. In the event of a power outage,
you can use this heater as your primary heat source.
WARNING: A qualified service person must in-
stall heater. Follow all local codes.
CHECK GAS TYPE
Use only the correct type of gas (natural or propane/LP). If your gas
supply is not the correct gas type, do not install heater. Call dealer
where you bought heater for proper type heater.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining unconfined space.
When ventilating to an adjoining unconfined space, you must
provide two permanent openings: one within 18" (45 cm) of the
ceiling and one within 18" (45 cm) of the floor on the wall
connecting the two spaces (see options 1 and 2, Figure 2). You can
also remove door into adjoining room (see option 3, Figure 2).
Follow CAN/CGA B149.1 Natural Gas Installation Code or CAN/
CGA B149.2 Propane Installation Code for required size of venti-
lation grills or ducts.
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills or ducts. You must
provide two permanent openings: one within 18" (45 cm) of the
ceiling and one within 18" (45 cm) of the floor. Connect these items
directly to the outdoors or spaces open to the outdoors. These spaces
include attics and crawl spaces. Follow CAN/CGA B149.1 Natural
Gas Installation Code or CAN/CGA B149.2 Propane Installation
Code for required size of ventilation grills or ducts.
IMPORTANT:
Do not provide openings for inlet or outlet air into
attic if attic has a thermostat-controlled power vent. Heated air
entering the attic will activate the power vent.
Figure 2 - Ventilation Air from Inside Building
Outlet
Air
Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air
Ventilated
Crawl Space
To
Crawl
Space
To Attic
AIR FOR COMBUSTION AND
VENTILATION
Continued
Figure 3 - Ventilation Air from Outdoors
Or
Remove
Door into
Adjoining
Room,
Option 3
Ventilation Grills
Into Adjoining Room,
Option 2
12"
12"
Ventilation
Grills
into Adjoining
Room,
Option 1
18"
(45 cm)
AIR FOR COMBUSTION AND VENTILATION
Ventilation Air
INSTALLATION
Check Gas Type
18"
(45 cm)
