International Comfort Products NAHA00101HV Installation Manual

INSTALLATION INSTRUCTIONS

HORIZONTAL INSTALLATION KIT

NAHA00101HV

NOTE: Read the entire instruction manual before starting the

installation.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical shock,
or other conditions which may cause death, personal injury, or
property damage. Consult a qualified installer, service agency,
or your distributor or branch for information or assistance. The
qualified installer or agency must use factory−authorized kits or
accessories when modifying this product. Refer to the
individual instructions packaged with the kits or accessories
when installing.

Follow all safety codes. Wear safety glasses, protective
clothing, and work gloves. Have a fire extinguisher available.
Read these instructions thoroughly and follow all warnings or
cautions include in literature and attached to the unit. Consult
local building codes, the current editions of the National Fuel
Gas Code (NFGC) NFPA 54/ANSI Z223.1 and the National
Electrical Code (NEC) NFPA 70.

In Canada, refer to the current editions of the National
Standards of Canada CAN/CSA−B149.1 and .2 Natural Gas
and Propane Installation Codes, and Canadian Electrical Code
CSA C22.1.

Recognize safety information. This is the safety−alert symbol

. When you see this symbol on the unit 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 hazards
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.

!

FIRE, EXPLOSION, ELECTRICAL SHOCK
HAZARD

Failure to follow this warning could result in personal injury,
death and/or property damage.

The ability to properly perform maintenance on this
equipment requires certain knowledge, mechanical skills,
tools, and equipment. If you do not possess these, do not
attempt to perform any maintenance on this equipment
other than those procedures recommended in the User’s
Manual.

WARNING

!

FIRE, EXPLOSION, ELECTRICAL SHOCK AND
CARBON MONOXIDE POISONING HAZARD

Failure to follow instructions could result in personal injury,
death or property damage.

Improper installation, adjustment, alteration, service,
maintenance, or use can cause carbon monoxide
poisoning, explosion, fire, electrical shock, or other
conditions, which could result in personal injury or death.
Consult your distributor or branch for information or
assistance. The qualified installer or agency must use only
factory−authorized kits or accessories when servicing this
product.

!

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury
or death.

Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position
and install a lockout tag. There may be more than one
electrical supply to the furnace. Check accessories and
cooling unit for additional electrical supplies that must be
shut off during furnace servicing. Lockout and tag switch
with a suitable warning label. Verify proper operation after
servicing.

WARNING

WARNING

INTRODUCTION

In the Horizontal orientation, a field supplied accessory drain
trap grommet is required to seal the gap between the casing
and the condensate trap for Direct Vent applications. The
condensate trap outlet extends 2 inches (51 mm) below the
furnace casing. To allow for servicing the trap, the condensate
drain tube in the loose parts bag can be modified to make a
coupler to allow for future service of the condensate trap and
drain line.

DESCRIPTION AND USAGE

The drain trap grommet seals the burner compartment of the
furnace to prevent ambient air from being drawn into the
furnace vestibule. It is only required for Horizontal installations
when a Direct Vent (2−pipe) or Ventilated Combustion Air
venting application is used. It is not required for other
orientations or when a Non−Direct Vent (1−pipe) application is
used. A Non−Direct Vent application is when the combustion air
for the furnace comes from the same location as the furnace.

Specifications subject to change without notice.

443 06 4401 00 Sept. 2011

Table 1 – Kit Contents

QUANTITY DESCRIPTION

1 Horizontal Trap Grommet
1 Installation Instructions

INSTALLATION

Unit Shut Down

1. Set room thermostat to lowest setting or “OFF”

2. Disconnect power at external disconnect, fuse or circuit
breaker.

3. Turn off gas at external shut−off or gas meter.

4. Remove outer doors and set aside.

5. Turn electric switch on gas valve to OFF.

Horizontal Orientation

1. Remove the knock−out for the condensate trap in the
side of the casing. Figure 1.

2. Install the drain trap grommet in the casing. If necessary,
remove the trap, install the grommet and re−install the
trap.

3. Remove the pre−formed drain tube and the two spring
clamps from the loose parts bag.

4. Remove the formed grommet on the tube to create an
elbow or straight connector. See Figure 2.

5. To connect the modify drain tube and remaining
condensate drain, follow the steps below. Refer to Figure

3.

6. Connect the cut tube to the outlet of the condensate trap
with 1 spring clamp.

7. Slide the other spring clamp down the plain end of the
drain tube.

8. Connect additional 1/2−in. CPVC piping to the open end
of the tube.

9. Slide the spring clamp down over the 1/2−in. CPVC pipe.

10. Connect additional 1/2−in. CPVC piping to a condensate
pump approved for use with acidic furnace condensate
or to a code−approved drain.

NOTE: When a condensate pump is not used, slope the pipe
away from the furnace to allow for proper drainage.

Freeze Protection

Special precautions MUST be made if installing furnace in an
area which may drop below freezing. This can cause improper
operation or damage to the equipment. If the the furnace
environment has the potential of freezing, the drain trap and
drain line must be protected.

Use 3 to 6 watt per foot at 115 volt, 40_F (4_C) self−regulating
shielded and waterproof heat tape. Wrap the drain trap and
drain line with the heat tape and secure with the ties. Follow the
heat tape manufacturers recommendations. Prime the trap
before furnace operation.

Unit Checkout

1. Set thermostat to “OFF”.

2. Turn on power at external disconnect, fuse or circuit
breaker.

3. Turn on gas at external shut−off or gas meter.

4. Check for gas leaks with a soap and water solution.

5. Manually close blower door switch.

6. Initiate component test through circuit board by referring
to“Component Test” on status code label on blower
access door for complete test sequence information.

7. If any status codes are flashed, refer to status code label
on unit blower door.

8. 8.Turn thermostat fan switch to “ON”, “Continuous” or
jumper R to G terminals at furnace control board.

9. Check for air leakage around cell panel. It may be
necessary to remove heat exchanger assembly and top
gasket between cell panel and furnace casing top plate.
Re−install and re−check for blower air leaks.

10. Remove jumper(s) or set thermostat fan to “Auto” or
“OFF”

11. Release blower door switch

12. Install blower access door

13. Set thermostat to call for heat.

14. Allow unit to initiate a complete call for heat cycle.

15. Check for air leakage around collector box. A whistling
noise may indicate air leak in collector box seal.

NOTE: As part of the system check−out, verify that the
following conditions are not affecting the operation of the
furnace:

S Short Cycling−Defective thermostat: Incorrect

thermostat anticipator setting, dirty filter or over−sized
furnace.

S Under firing/low BTU input: Set manifold pressure and

verify firing rate as shown on rating plate by clocking
the gas meter.

S Overfiring/high BTU input: Set manifold pressure and

verify

S firing rate as shown on rating plate by clocking the gas

meter.

S Low temperature rise: Set unit for correct temperature

rise range

S as shown on unit rating plate.
S Contaminated combustion air: Remove contaminates

or provide

S ample fresh air for combustion.
S Excessive amounts of outside ventilation air: Return

air temperature cannot be below 60 degrees F for
extended periods of time.

S Incorrect venting or termination: Recirculation of

products of combustion into the combustion air pipe
can damage the furnace.

S Verify proper venting and vent termination per

installation instructions. For additional information, and
a complete sequence of furnace operation, refer to
furnace Installation, Start− Up and Operating
Instructions.

16. After System Check−out is complete, set thermostat
below room temperature.

17. Verify that burner shuts down and blower completes
selected off delay time.

18. Verify furnace operates properly and set thermostat to
desired room temperature.

19. Re−install outer door.

2 443 06 4401 00

Specifications subject to change without notice.