21
Combustion
Air
Intake
Elbow
Exhaust
Vent
Exhaust
Plumbing Vent Roof Boot
(Typ. Both Pipes)
A
1"
18" Min.
36" Max.
A
Figure 17. Vertical Vent Termination
A= 12" Above Roof or Snow
Accumulation Level
draining or the red status light on the control
board is pulsing a 2-blink code follow the steps
below.
1.
Remove the collector box soft tube at
location A in Figure 18 and insure the exit
from the collector box is clear of any debris
or obstructions.
2.
Replace this tube and insure the fit to the
header spout is air tight. Air will be drawn into
the header if this connection is not tight.
3.
Check other tube connections along the
drain system. Insure that all are air tight.
NOTE: Industry research studies indicate that
when condensate is routed to an active drain,
household detergents, etc., buffer its acidity. If
the drain is not actively used or if codes require,
obtain a neutralizer kit NORDYNE part no.
8"
Left Side
Drain
"HARD" J
Drain Tube
Clamp
(Loosen For Step 1)
(Retighten for Step 3)
Route to
floor drain.
...OR
Route to
condensate
pump. Keep
downward
slope.
Collector Box
A
Rotate counter
clockwise (Step 2)
Upflow Models
902373 (usually contains limestone). Proper
drains and connections to the condensate tub-
ing are required as NORDYNE cannot be held
responsible for water leakage which occurs
due to loose hose connections or improperly
sealed drain line pipes.
GAS SUPPLY AND PIPING
This furnace is equipped for either left or right
side gas entry. Typical gas service hook-ups
are shown in Figure 19. When making the gas
connection provide clearance between the gas
supply line and the entry hole in the furnace
casing to avoid unwanted noise and/or damage
to the furnace.
All gas piping must be installed in compliance
with local codes and utility regulations. Some
local regulations require the installation of a
manual main shut-off valve and ground joint
union external to the furnace. The shut-off valve
should be readily accessible for service and/or
emergency use. Consult the local utility or gas
supplier for additional requirements regarding
placement of the manual main gas shut-off. In
the absence of local codes the gas line installa-
tion must comply with the latest edition of the
National Fuel Gas Code (ANSI Z223.1) or
(CAN/CGA B149) installation codes.
An 1/8" NPT plugged tap must be installed in the
gas line to the unit for use when measuring the
gas supply pressure. The plug should be readily
accessible for service use. A drip leg should be
installed in the vertical pipe run to the unit. Table
6 lists gas flow capacities for standard pipe
Figure 18. Furnace with Condensate Drain Trap Assembly
