RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY INFORMATION
WARNING
These instructions are intended as an aid to qualified
licensed service personnel for proper installation, adjustment and operation of this unit. Read these instructions
thoroughly before attempting installation or operation.
Failure to follow these instructions may result in improper
installation, adjustment, service or maintenance possibly
resulting in fire, electrical shock, property damage,
personal injury or death.
DO NOT DESTROY THIS MANUAL
Please read carefully and keep in a safe place for future reference by a serviceman.
This document is customer property and is to remain with this unit.
These instructions do not cover all the different variations of systems nor does
it provide for every possible contingency to be met in connection with installation.
All phases of this installation must comply with NATIONAL STATE AND LOCAL
CODES. If additional information is required please contact your local distributor.
1.0 SAFETY
This is a safety alert symbol. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury.
This is an attention alert symbol. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury.
Understand and pay particular attention to the signal words DANGER, WARNING, or
CAUTION.
DANGER indicates an imminently hazardous situation, which, if not avoided, will result
in death or serious injury.
WARNING indicates a potentially hazardous situation, which, if not avoided, could result
in death or serious injury.
CAUTION indicates a potentially hazardous situation, which, if not avoided may result
in minor or moderate injury. It is also used to alert against unsafe practices and hazards
involving only property damage.
WARNING
Improper installation may create a condition where the operation of the product
could cause personal injury or property damage.
Improper installation, adjustment, alteration, service or maintenance can cause
injury or property damage. Refer to this manual for assistance or for additional
information, consult a qualified contractor, installer or service agency.
CAUTION
This product must be installed in strict compliance with the installation instructions and any applicable local, state, and national codes including, but not
limited to building, electrical, and mechanical codes.
WARNING
FIRE OR ELECTRICAL HAZARD
Failure to follow the safety warnings exactly could result in serious injury, death
or property damage.
A fire or electrical hazard may result causing property damage, personal injury
or loss of life.
3
1.1 INSPECTION
As soon as a unit is received, it should be inspected for possible damage during transit.
If damage is evident, the extent of the damage should be noted on the carrier's delivery
receipt. A separate request for inspection by the carrier's agent should be made in
writing. See Local distributor for more information.
Requirements For Installing/Servicing R410A Equipment
Gauge sets, hoses, refrigerant containers, and recovery system must be designed
to handle the POE or PVE type oils.
Manifold sets should be 800 PSIG high side and 250 PSIG low side with 550 PSIG
Iow side restart.
All hoses must have a 700 PSIG service pressure rating.
Leak detectors should be designed to detect refrigerant.
Recovery equipment (including refrigerant recovery containers) must be specifi-
cally designed to handle R410A.
Do not use an R-22 TXV.
It will be more convenient to open the Service valve after removing the Underside
Clpboard
Underside Clapboard
. see the Fig.1
LARGE SERVICE VALVE
SMALL SERVICE VALVE
Fig.1
Underside Clapboard Location
1.2 LIMITATIONS
The unit should be installed in accordance with all National, State and Local Safety
Codes and the limitations listed below:
1.Limitations for the indoor unit, coil and appropriate accessories must also be observed.
2.The outdoor unit must not be installed with any duct work in the air stream. The outdoor fan is
the propeller type and is not designed to operate against any additional external static
pressure.
3.The maximum and minimum conditions for operation must be observed to assure a system
that will give maximum performance with minimum service.
4.This unit is not designed to operate with a low ambient kit. Do not modify the control system
to operate with any kind of Iow ambient kit.
5.The maximum allowable line length for this product is 150 feet(Just for Scroll compressor).
4
2.0 GENERAL
The outdoor units are designed to be connected to a matching indoor coil with sweat
connect lines. Sweat connect units are factory charged with refrigerant for a matching indoor coil plus 25 feet of field supplied lines.
Matching indoor coils are available with a thermostatic expansion valve or an orifice
for the most common usage. The orifice size and/or refrigerant charge may need to
be changed for some indoor-outdoor unit combinations, elevation differences or
total line lengths.
"H" in. [mm] "W" in. [mm] "L" in. [mm]
24-15/16[633]
24-15/16[633]
28[710]
28[710] 3 /8 3 /4
24-15/16[633]
33-3/16[843]
33-3/16[843]
SERVICE
FITTING
Refrigerant Connection
Service Valve Size
Liquid in.
Vapor in.
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3.0 UNIT INSTALLATION
3.1 LOCATION
Before starting the installation, select and check the suitability of the location for both
the indoor and outdoor unit. Observe all limitations and clearance requirements. The
outdoor unit must have sufficient clearance for air entrance to the condenser coil, for air
discharge and for service access. See Fig.2
NOTE
For multiple unit installations, units must be spaced a minimum of 18 inches
apart. (Coil face to coil face.)
If the unit is to be installed on a hot sun exposed roof or a black-topped ground area, the
unit should be raised sufficiently above the roof or ground to avoid taking the accumulated layer of hot air into the outdoor unit.
Provide an adequate structural support.
3.2 GROUND INSTALLATION
The unit may be installed at ground level on a solid base that will not shift or settle, causing strain on the refrigerant lines and possible leaks. Maintain the clearances shown in
Fig.2 and install the unit in a level position.
Normal operating sound levels may be objectionable if the unit is placed directly under
windows of certain rooms (bedrooms, study, etc.).
Top of unit discharge area must be unrestricted for at least 60 inches above the unit.
WARNING
The outdoor unit should not be installed in an area where mud or ice could cause
personal injury.
Elevate the unit sufficiently to prevent any blockage of the air entrances by snow in
areas where there will be snow accumulation. Check the local weather bureau for the
expected snow accumulation in your area. Isolate the unit from rain gutters to avoid any
possible wash out of the foundation.
3.3 ROOF INSTALLATION
When installing units on a roof, the structure must be capable of supporting the total
weight of the unit, including a padded frame unit, rails, etc., which should be used to
minimize the transmission of sound or vibration into the conditioned space.
3.4 UNIT PLACEMENT
1. Provide a base in the pre-determined location.
2. Remove the shipping carton and inspect for possible damage.
3. Compressor tie-down bolts should remain tightened.
4. Position the unit on the base provided.
6
CAUTION
This system uses R410A refrigerant which operates at higher pressure than
R-22. No other refrigerant may be used in this system. Gauge sets, hoses,
refrigerant containers, and recovery system must be designed to handle
R410A. If you are unsure, consult the equipment manufacturer.
The outdoor unit must be connected to the indoor coil using field supplied refrigerant
grade copper tubing that is internally clean and dry. Units should be installed only with
the tubing sizes for approved system combinations. The charge given is applicable for
total tubing lengths up to 25 feet.
NOTE
Using a larger than specified line size could result in oil return problems. Using
too small a line will result in loss of capacity and other problems caused by insufficient refrigerant flow. Slope horizontal vapor lines at least 1" every 20 feet
toward the outdoor unit to facilitate proper oil return.
3.5 PRECAUTIONS DURING LINE INSTALLATION
1. Install the lines with as few bends as possible. Care must be taken not to damage
the couplings or kink the tubing. Use clean hard drawn Copper tubing where no
appreciable amount of bending around obstruction is necessary, if soft copper must
be used, care must be taken to avoid sharp bends which may cause a restriction.
2. The lines should be installed so that they will not obstruct service access to the coil,
air handling system or filter.
3. Care must also be taken to isolate the refrigerant lines to minimize noise transmis sion from the equipment to the structure.
4. The vapor line and liquid line must be insulated with a minimum of 1/2" foam rubber
insulation (Armafiex or equivalent). Tape and suspend the refrigerant lines as shown.
DO NOT allow tube metal-to-metal contact. See Fig. 3.
5. Use PVC piping as a conduit for all underground installations as shown in Fig. 4.
Buried lines should be kept as short as possible to minimize the build up of liquid
refrigerant in the vapor line during long periods of shutdown.
6. Pack fiberglass insulation and a sealing material such as perma gum around refrig erant lines where they penetrate a wall to reduce vibration and to retain some flexi bility.
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