Return Air - Heat Controller TGC Series Installation Instructions Manual

FIGURE 8
FLAT ROOFTOP INSTALLATION, ATTIC OR DROP CEILING DISTRIBUTING SYSTEM. MOUNTED ON
ROOFCURB. CURB MUST BE LEVEL.
10
On ductwork exposed to outside temperature and humidity, use a minimum of 2 of
insulation and a vapor barrier. Distribution system in attic, furred space or crawl space
should be insulated with at least 2 of insulation.
cient for ductwork inside the air conditioned space.
Provide balancing dampers for each branch duct in the supply system. Properly support
ductwork from the structure.
IMPORTANT: In the event that the return air ducts must be run through an "unconfined"
space containing other fuel burning equipment, it is imperative that the user/homeowner
must be informed against future changes in construction which might change this to a
"confined space." Also, caution the user/homeowner against any future installation of
additional equipment (such as power ventilators, clothes dryers, etc., within the existing
unconfined and/or confined space which might create a negative pressure within the
vicinity of other solid, liquid, or gas fueled appliances.
H. RETURN AIR
WARNING
!
NEVER ALLOW PRODUCTS OF COMBUSTION OR THE FLUE PRODUCTS TO
ENTER THE RETURN AIR DUCTWORK, OR THE CIRCULATING AIR SUPPLY.
ALL RETURN DUCTWORK MUST BE ADEQUATELY SEALED AND SECURED
TO THE FURNACE WITH SHEET METAL SCREWS, AND JOINTS TAPED. ALL
OTHER DUCT JOINTS MUST BE SECURED WITH APPROVED CONNECTIONS
AND SEALED AIRTIGHT.
FAILURE TO PREVENT PRODUCTS OF COMBUSTION FROM BEING CIRCU-
LATED INTO THE LIVING SPACE CAN CREATE POTENTIALLY HAZARDOUS
CONDITIONS, INCLUDING CARBON MONOXIDE POISONING THAT COULD
RESULT IN PERSONAL INJURY OR DEATH.
I299
1 ⁄ to 1 thick insulation is usually suffi-
2