Gas Supply And Piping - Nordyne M2RC-080 Installation Instructions Manual

"HARD" J
Drain Tube
Left
Side
Drain
Route to
floor drain. I Routeto
18.... OR
, Route Io
condensate _ condel_sate
Clamp pump. Ksep
_ Clamp pump¸ Keop
(LoosenForStepI) downward "HARD' J (Loosen ForSlepI) downward
(RetightanforStep 3) slope. Drain Tube (R(_tighten f orStep 3) slope.
Figure 20. Furnace with Condensate Drain Trap Assembly
The condensate drainage system is internal to
the furnace. The drain may exit either the dght
or left side of the furnace cabinet. For a right side
drain, simply extend the tubing out of the 7/8"
hole in the cabinet (See Figure 20).
For a left side drain follow the steps below:
1. Loosen the clamp on the soft exit tube
(see Figure 20.)
2. Rotate the soft exit tube (counter clock-
wise, 180 ° upflow models; clockwise 90 °
downflow models.)
3. Re-tighten the clamp. MAKE SURE
CLAMP IS TIGHT TO AVOID LEAKAGE
OF CONDENSATE.
4. Route the tubingout ofthe 7/8" hole located
8 inches up fl'om the bottom furnace.
The condensate shouid drain from the plastic
collector box (location A in Figure 20) as droplets
or a small stream. If you notice the furnace has
operated formorethan 5 minutes without 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 20 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 airtight. Airwill 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 (usually contains lime-
stone). Proper drains and connections to the
condensate tubing 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
General
This furnace is equipped for either left or right
side gas entry. Typical gas service hook-ups
are shown in Figure 21. 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 dam-
age 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 installation must comply with the provi-
sions stated in the Federal Manufactured Home
Standard (H.UD Title 24, part 280 and the
National Fuel Gas Code (ANSI Z223.1/NFPA-
54) or (CAN/CGA B149) installation codes.
A drip leg should be installed in the vertical
pipe run to the unit. Table 8 lists gas flow
capacities for standard pipe sizes as a func-
tion of length in typical applications based on
nominal pressure drop in the line.
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