ICP NHP260GKA1, NHP260AKA1, NHP248GKA1, NHP248AKA1, NHP242GKA1 Owner’s Manual
...
INSTALLATION INSTRUCTIONS
Split System
Performance Line
AC & HP Condensers
These instructions must be read and understood completely before attempting installation.
Installation / Startup Information & Warranty
CAUTION
Installation or repairs made by unqualified
persons can result in hazards to you and others.
Installation MUST conform with local building
codes or, in the absence of local codes, with the
the National Electrical Code NFPA 70/ANSI
C1-1999 or current edition and Canadian
Electrical Code Part 1 CSA C.22.1.
The information contained in this manual is
intended for use by a qualified service technician
familiar with safety procedures and equipped
with the proper tools and test instruments.
Failure to carefully read and follow all instruc-
tions in this manual can result in equipment
malfunction, property damage, personal injury
and/or death.
After uncrating unit, inspect thoroughly for hidden damage.
If damage is found, notify the transportation company im-
mediately and file a concealed damage claim.
Locating The Outdoor Unit:
Check local codes covering zoning, noise, platforms.
If practical, avoid locating next to fresh air intakes, vent or
bedroom windows. Noise may carry into the openings and
disturb people inside.
Placement of the unit should be in a well drained area or
unit must be supported high enough so runoff will not enter
the unit.
Improper installation, adjustment, alteration, service or
maintenance can void the warranty.
The weight of the condensing unit requires caution and
proper handling procedures when lifting or moving to avoid
personal injury. Use care to avoid contact with sharp or
pointed edges.
Safety Precautions
1. Always wear safety eye wear and work gloves when
installing equipment.
2. Never assume electrical power isdisconnected. Check
with meter and disconnect.
3. Keep hands out of fan areas when power is connected
to equipment.
4. R-22 causes frost-bite burns.
5. R-22 is toxic when burned.
NOTE TO INSTALLING DEALER: The Owners Instruc-
tions and Warranty are to be given to the owner or promi-
nently displayed near the indoor Furnace/Air Handler Unit.
Roof top installations are acceptable providing the roof will
support the unit and provisions are made for water drain-
age and the noise or vibration through the structure.
Do not install the unit in a recessed or confined area where
recirculation of discharge air may occur.
Do not locate where heat, lint or exhaust fumes will be dis-
charged on unit (as from dryer vents).
Heat Pumps Only: The top surface of platform must be
above average winter snow levels to prevent coil blockage.
421 01 3002 01
Nov., 2003
_ Installation Instructions Split System Condensers I
Clearances:
Nominal operating clearances, where practical, are 60
inches (150 cm) above unit for discharge air and 24 inches
(40cm) around coil for intake air on three sides. Clearance
on one side (normally between unit and structure) may be
reduced to 12 inches (30cm). Nominal clearances are
based from asolid parallel object, wall, roof overhang, etc.
Do Not install under roof overhangs without guttering. A
minimum vertical clearance of 60" is required to overhang.
The clearance may be reduced from a single object with a
small surface area, such as the end of a wall, outside cor-
ner of a wall, fence section or a post, etc. As a general rule
the width of the object should equal the minimum clearance
from the unit. For example, a 4 inch (10cm) fence post
could be 4 inches (10cm) from the unit.
Unit Support:
The unit must be level, and supported above grade by
beams, platform or a pad. Platform or pad can be of open or
solid construction but should be of permanent materials
such as concrete, bricks, blocks, steel or pressure treated
timbers approved for ground contact. Refer to Unit Clear-
ances to help determine size of supports etc. Soil condi-
tions should be considered so the platform or pad does not
shift or settle excessively and leave the unit only partially
supported.
CAUTION
Inadequate support could cause excessive vibration and
noise or binding and stress on refrigerant lines resulting in
equipment failure.
To minimize vibration or noise transmission, it is recom-
mended that supports not be in contact with the building
structure. However, slabs on grade constructions with an
extended pad are normally acceptable.
A. Ground Level Installation:
Inside corner locations on single story structures require
evaluation. Large overhanging soffits may cause air recir-
culation in a corner area even though recommended clear-
ances are maintained. As a guide locate the unit far enough
out so that half of the discharge grille is out from under the
soffit.
Two or more units may be spaced with 20 inches (50cm)
between units.
A service clearance of 24 inches (60cm) is desirable from
control box end or side. Control box and corner panel be-
low it can be loosened and moved out to the side to facili-
tate servicing. Internal components can be accessed
through control box corner or top only.
B. Roof Top Installation:
This type of installation is not recommended on wood
frame structures where low noise levels are required.
Supporting structure or platform for the unit must be level. If
installation is on a flat roof the unit should be 4 inches
(10cm.) above roof level. Four by four posts placed over a
load bearing wall make a suitable mounting platform.
If possible, place the unit over one or more load bearing
walls. If there are several units, mount them on platforms
that are self-supporting and span load bearing walls.
These suggestions are to minimize noise and vibration
transmission through the structure. If the structure is a
home or apartment, avoid (if practical) locating the unit
over bedrooms or study.
If beams or an open platform are used for support it is rec-
ommended that the soil be treated or area be graveled to
retard the growth of grasses and weeds.
_J 421 01 3002 01
NOTE: When condensing unit is to be installed on a
bonded guaranteed roof, a release must be obtained from
the building owner to free the installer from all liabilities.
I Split System Condensers Installation Instructions
Figure 1 1 Dimensions
Minimum Mounting Pad Sizes with pad starting at
15" from structure for minimum clearances
FRONT
Chassis #1 20" W X 20" D
Chassis #2 24" W X 26" D
26-1/2
"H" = Ranges from 24" to 34"
Refer to Specification Sheet
24-3/4 --
Chassis #1
, 21 i
2_, -3/4
Line & Low
Voltage Wiring
Ince
_hs G
I 2
/
-- 29-3/4
Chassis #2
Figure 2 I Clearances
Recommended Clearances Mininumum Clearances
24"
36" O
0
IIIIIIIIIII IIIIIIIIII IIIIIIIII T7T [Tm
11/2
Mininumum Clearances
24"
24"
24"
24"
24"
Mininumum Clearances
24' 0
24"
24"
Mininumum Clearances
24"
24"
6"_ _ 24"
Pipe
421 01 3002 01 3L_
j Installation Instructions Split SystemCondensers J
Installing Refrigerant Lines
Component Matches
Check to see that you have the proper system compo-
nents. APPROVED MATCHED SYSTEM COMPON ENTS
MUST BE USED. Refer to the Sales Specification Sheet
or Split System Summary for match data and orifice
sizes,
The outdoor units are shipped with a refrigerant charge to
match the indoor unit and 15 ft. (4.5m) of refrigerant line. If
shorter or longer lines are used, the charge will have to be
adjusted.
TOTAL LENGTH OF REFRIGERANT LINES MUST NOT
EXCEED 50 ft. WITH A MAXIMUM VERTICAL SEPARA-
TION OF 40 ft. BETWEEN THE OUTDOOR AND IN-
DOOR UNITS.
Restrictor Orifice
Some indoor matches use a restrictor orifice in the fitting at
the indoor coil. Some matches may require a different ori-
fice for proper system performance and it must be changed
before the refrigerant lines are connected.
Changing the Restrictor Orifice
The restrictor orifice is located in a fitting in the liquid line.
The fitting is actually the distributor end of the cap tube as-
sembly.
1. Remove the liquid line fitting and replace restrictor ori-
fice. (STANDARD RIGHT HAND THREAD)
2. Make sure the restrictor is installed with the rounded
end toward the feeder tubes. See Figure 3.
PLEASE! UNDER NO CIRCUMSTANCES LEAVE THE
LINES OPEN TO THE ATMOSPHERE FOR ANY
PERIOD OF TIME,
Be extra careful with sharp bends. This tubing can "kink"
very easily, and if this occurs, the entire tube length will
have to be replaced. Extra care at this time will eliminate
future service problems.
Suspension And Installation Of
Refrigeration Lines
DO NOT fasten liquid or suction lines in direct contact with
the floor or ceiling joist. Use an insulated or suspension
type of hanger. Keep both lines separate, and insulate the
suction line. Both lines should be insulated in long runs in
an attic or underground in a raceway.
Do not let refrigerant lines come in direct contact with
foundation. When running refrigerant lines through the
foundation or wall, the openings should be made large
enough to allow for a sound absorbing material to be
placed or installed between the tubing and the foundation.
This will prevent noise transmission between the tubing
and the wall section (foundation) or the building.
Installation Instructions For Condensing
Units That Are Higher Than Evaporator
It is recommended that vertical suction risers not be up-
sized. Proper oil return to the compressor should be main-
tained with suction gas velocity. If velocities drop below
1500 fpm (feet per minute), oil return will be decreased. An
oil trap should be installed every 20' of vertical suction line
riser (condenser above evaporator.) Refer to line sizing
charts.
Figure 3 J
Restrictor Orifice
Nut and Liquid Line
with Strainer
! RRestr 'dC_drEOd''ce
_Feeder Tubes
Figure 4 Oil Traps
10" Max
Min.
Refrigeration Line Sets
Ifit is necessary to add tubing in the field, use dehydrated or
dry sealed deoxidized copper refrigeration tube. DO NOT
use copper water pipe.
It is important that no tubing iscut or seals broken until
you are ready to actually make connections to the
evaporator and to the condenser section.
Do not remove rubber plugs or copper caps from the
tube ends until ready to make connections at evapora-
tor and condenser.
_J 421 01 3002 01
Line Valves
The outdoor condensing unit issupplied with straight sweat
brass service valves with copper stubs.
_8-11-1e
Loading...