Rheem Gra Series, Руководство по установке

Страница: 14 / 64

14 14
GENERAL INFORMATION
READ AND FOLLOW ALL
INSTRUCTIONS IN THIS SECTION.
FAILURE TO PROPERLY VENT
THIS FURNACE CAN CAUSE
CARBON MONOXIDE POISONING
OR AN EXPLOSION OR FIRE,
RESULTING IN PROPERTY
DAMAGE, PERSONAL INJURY
OR DEATH.
This furnace removes both sensible
and latent heat from the combustion
flue gases. Removal of latent heat
results in condensation of flue gas
water vapor. This condensed water
vapor drains from the secondary heat
exchanger and out of the unit into a
drain trap.
When installed as a non-direct vent
furnace, only exhaust piping is
required and inside combustion air
may be used. Refer to section on
“COMBUSTION & VENTILATION AIR
FOR FURNACE INSTALLATIONS.”
Direct vent installations require a
dedicated combustion air and venting
system. All air for combustion is taken
from the outside atmosphere and all
combustion products are discharged
to the outdoors.
IN CANADA, ONLY cUL CERTIFIED
PLASTIC VENT PIPE (PVC/CPVC)
CAN BE USED TO VENT GAS FIRE
APPLIANCES. THE VENTING
MATERIAL MUST BE CERTIFIED
FOR COMPLIANCE TO ULC S636.
The combustion air and vent pipe
fittings must conform to American
National Standards Institute (ANSI)
and American Society for Testing
Materials (ASTM) standards as
shown below:
OVERTEMPERATURE
SAFETY SWITCHES
Furnaces are equipped with safety
switches in the control compartment
to protect against overtemperature
conditions caused by inadequate
combustion air supply. The switches
for the upflow and downflow models
are located in the burner
compartment. If a switch is tripped it
must be manually reset.
VENTING AND COMBUSTION AIR PIPING
!
WARNING
4. Connect the furnace to the
supply air plenum.
5. Connect the return air ducting to
the return air opening at the top
of the unit. Make the connection
air tight to prevent entraining
combustion gases from an
adjacent fuel-burning appliance.
6. Be sure to have adequate
space for the unit filter.
NOTE: DO NOT take return air
from bathrooms, kitchens,
furnace rooms, garages, utility or
laundry rooms, or cold areas.
HORIZONTAL UNIT
IMPORTANT: This furnace may only
be installed so as when facing the
front of the furnace, supply air is
discharged on the left hand side.
1. Position the unit to minimize long
runs or runs with many turns and
elbows.
2. If summer air conditioning is
desired, position the indoor coil
on the left end of the unit. Insure
that no air can bypass this coil.
3. Connect the furnace to the
supply air plenum.
4. Connect the return air ducting to
the return air opening at the right
end of the unit. Make the
connection air tight to prevent
pulling combustion gases from
an adjacent fuel-burning
appliance.
5. Be sure to have adequate
space for the unit filter.
NOTE: DO NOT take return air
from bathrooms, kitchens,
furnace rooms, garages, utility or
laundry rooms, or cold areas.
FIGURE 10
COMBUSTIBLE FLOOR BASE
VENTING AND COMBUSTION AIR PIPING
PIPE & FITTING MATERIAL
ASTM
SPECIFICATION
Schedule 40 PVC (Pipe) D1785
Schedule 40 PVC (Cellular Core Pipe) F891
Schedule 40 PVC (Fittings) D2466
SDR-21PVC (Pipe) D2241
SDR-26 PVC (Pipe) D2241
Schedule 40 ABS Cellular Core DWV (Pipe) F628
Schedule 40 ABS (Pipe) D1527
Schedule 40 ABS (Fittings) D2468
ABS-DWV (Drain Waste & Vent)
(Pipe & Fittings)
D2661
PVC-DWV (Drain Waste & Vent)
(Pipe & Fittings)
D2665
!
WARNING