International Comfort Products NAHA001NK Installation Manual

INSTALLATION INSTRUCTIONS

NEUTRALIZING KIT

NAHA001NK

NOTE: For the use on 90+ AFUE condensing gas

furnaces.
NOTE: Read the entire instruction manual before starting
the installation.

SAFETY CONSIDERATIONS

Installing and servicing heating equipment can be
hazardous due to gas and electrical components. Only
trained and qualified personnel should install, repair, or
service heating equipment.
Untrained personnel can perform basic maintenance
functions, such as cleaning and replacing air filters.
Trained service personnel must perform all other
operations. When working on heating equipment, observe
precautions in the literature, on tags, and on labels
attached to or shipped with the unit, and other safety
precautions that may apply.
Follow all safety codes. In the United States, follow all
safety codes including the National Fuel Gas Code
(NFGC) NFPA 54−2009/ANSI Z223.1−2009. In Canada,
refer to the National Standard of Canada, natural Gas and
Propane Installation Codes (NSCNGPIC),
CAN/CGA−B149.1 and .2.
Wear safety glasses and work gloves. Have a fire
extinguisher available during start−up, adjustment steps,
and service calls.
Recognize safety information. This is the safety−alert

symbol . When you see this symbol on the furnace
and in instructions or manuals, be alert to the potential for
personal injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety−alert
symbol. DANGER identifies the most serious hazards
which will result in severe personal injury or death.
WARNING signifies a hazard which could result in
personal injury or death. CAUTION is used to identify
unsafe practices which may result in minor personal injury
or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced
installation, reliability, or operation.

Kit Contents

DESCRIPTION QUANTITY

Neutralizer Pack 1

2 inch Pipe Assembly 1

2 inch Cap 1

1/2 inch Barb Fitting 2

1. A condensate or sump pump MUST be used if
local codes require, or if no inside floor drain is
available, A condensate neutralizer cartridge
MUST be installed in the drain line unless pump is
approved for use with acidic condensate.

2. Install an overflow line if routing to floor drain or
sump pump.

3. A condensate pump MUST have an auxiliary
safety switch to prevent operation of furnace and
resulting overflow of condensate in the event of
pump failure. The safety switch MUST be wired
through the R circuit ONLY (low voltage) to
provide operation in either heating or cooling
modes.

CONDENSTATE DRAIN AND NEUTRALIZER
NOTE: Drain line and overflow line can be 1/2 inch PVC flex

tube or schedule 40 with a disconnect union so the trap can
be removed. Drains must terminate at an inside drain to
prevent freezing of condensate and possible property
damage.
INSTALLATION OF NEUTRALIZER − A condensate
neutralizer cartridge MUST be installed in the drain line in a
horizontal position ONLY.

1. Screw barb fittings into end caps

2. Pour neutralizing pack into open end.

3. Tighten remaining cap onto the other end (seal
threads with silicone rubber to prevent leakage).

4. Connect neutralizer kit between furnace and floor
drain or condensate pump.

5. Affix the1/2 inch PVC flex tube or schedule 40
coming from the furnace to the barb.

6. Affix 1/2 inch PVC flex or schedule 40 to the other
side of cartridge discharging into the drain or
sump pump.

Do no use Condensate for any reason as it is acidic.
Inspect the drain line and overflow line at least monthly. If
the Condensate Neutralizer Cartridge becomes plugged
the condensate will flow through the overflow line.
If this happens, disconnect the drain line cartridge and
unscrew end cap from cartridge. Pour the neutralizer out
and thoroughly flush neutralizer and inside of cartridge
with water. Pour neutralizer back into cartridge and
connect drain line. The threads on the cartridge should be
sealed with silicone rubber (bathtub caulk) to prevent
leakage.

OVERFLOW DRAIN LINE

An overflow drain line should be added to the installation
when furnace is located in an area that may be susceptible
to water damage.
If the trap or neutralizer becomes blocked and there is not
a overflow drain line, the water−acid solution will overflow
onto the floor through the open end of the barb “T”. This
spillage could cause property damage.

Specifications subject to change without notice.

441 06 1050 00 June 2010

OVERFLOW DRAIN LINE INSTALLATION
Prefered Method

Install a barb “T” in drain line prior to neutralizer. Run a clear
flexible PVC line from the horizontal outlet of barb “T” to the
drain.

Figure 1

Typical Installation

Open Tee

Alternate Method

Install a barb “T” in drain line prior to neutralizer. Install a
second barb “T” in the line on the outlet side of Neutralizer
Kit. Run a clear flexible PVC line from the horizontal outlet
of barb “T” installed on the outlet side of the Neutralizer Kit.
NOTE: Seal all threaded surfaces with silicone rubber
caulking (non−paintable).

INLET

EXHAUST

V

E

N

T

IN

ON

OFF

Tee Trap

Evaporator
Coil
Drain Line
(Optional)

Main
Drain Line

Condensate
Trap

Representative drawing only, some models may vary in appearance.

L10F014

International Comfort Products, LLC

Lewisburg, Tennessee 37091 USA

441 06 1050 00 2Specifications subject to change without notice.