: Air handler installation
INSTALLATION INSTRUCTIONS
HIGH EFFICIENCY
AIR HANDLERS
16SEER
1.5-3.5 Tons
FEATURING R-410A OR R22 REFRIGERANT
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 instruction 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.
TABLE OF CONTENTS
1.0 SAFETY.................................................................................................................3
2.0 GENERAL.............................................................................................................5
2.1 UNIT DIMENSIONS........................................................................................6
3.0 APPLICATIONS....................................................................................................7
3.1 VERTICAL UPFLOW.......................................................................................7
3.2 VERTICAL DOWNFLOW.................................................................................7
3.3 HORIZONTAL..................................................................................................8
3.4 INSTALLATION IN AN UNCONDITIONED SPACE.......................................10
4.0 ELECTRICAL WIRING........................................................................................10
4.1 POWER WIRING...........................................................................................10
4.2 CONTROL WIRING.......................................................................................11
4.3 GROUNDING.................................................................................................11
4.4 ELECTRICAL DATA.......................................................................................12
5.0 AIRFLOW PERFORMANCE...............................................................................12
6.0 DUCTWORK........................................................................................................14
7.0 REFRIGERANT CONNECTIONS........................................................................15
7.1 CONDENSATE DRAIN TUBING....................................................................15
8.0 AIR FILTER (not factory-installed)....................................................................16
9.0 FILTER INSTALLATION DIMENSIONS ..............................................................17
10.0 WIRE DIAGRAM................................................................................................18
2
This document is customer property and is to remain with this unit.
These instructions do not cover all the different variations systems nor does it provide
for every possible contingency to be met in connection with installtion.
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.
WARNING
Disconnect all power to unit before installing or servicing. More than one
disconnect switch may be required to de-energize the equipment. Hazardous
voltage can cause server personal injury or death.
WARNING
If removal of the blower assembly is required, all disconnect switches supplying power to the equipment must be de-energized and locked (if not in sight
of unit ) so the field power wires can be safely removed from the blower
assembly. Failure to do so can cause electrical shock resulting in personal
injuring or death.
WARNING
Because of possible damage to equipment or personal injury, installation,
service, and maintenance should be performed by a trained, qualified service
personnel. Consumer service is recommended only for filter cleaning /
replacement. Never operate the unit with the acess panels removed.
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.
3
WARNING
The unit must be permanently grounded. Failure to do so can result in
electrical shock causing personal injury or death.
WARNING
PROPOSITION 65: This appliance contains fiberglass insulation. Respirable
particles of fiberglass are known to State of California to cause cancer.
All manufacturer products meet current federal OSHA Guidelines for safety.
California Proposition 65 warnings are required for certain products, which
are not covered by the OSHA standards.
California’s Proposition 65 requires warnings for products sold in California
that contain or produce any of over 600 listed chemicals known to the State
of California to cause cancer or birth defects such as fiberglass insulation,
lead in brass, and combustion products from natural gas.
All “new equipment” shipped for sale in California will have labels stating that
the product contains and /or produces Proposition 65 chemicals. Although
we have not changed our processes, having the same label on all our
productd facilitates manufacturing and shipping. We cannot always know
“when, or if” products will be sold in the California market.
You may receive inquiries from customers about chemicals found in, or
produced by, some of our heating and air-conditioning equipment, or found in
natural gas used with some of our products. Listed below are those chemicals and substances commonly associated with similar equipment in our
industry and other manufacturers.
Glass Wool (Fiberglass) Insulation
Carbon Monoxide (CO).
Formaldehyde
Benzene
More details are available at the websites for OSHA (Occupational Safety
and Health Administration), at www.osha.gov and the State of California’s
OEHHA (Office of Environmental Health Hazard Assessment), at
www.oehha.org. Consumer education is important since the chemicals and
substances on the list are found in our daily lives. Most consumers are aware
that products present safety and health risks, when improperly used, handled
and maintained.
WARNING
4
WARNING
The first 36 inches of supply air plenum and ductwork must be constructed of
sheet metal as required by NFPA 90B. The supply air plenum or duct must
have a solid sheet metal bottom directly under the unit with no openings,
registers or flexible air ducts located in it. If flexible supply air ducts are used
they may be located only in the vertical walls of rectangular plenum, a
minimum of 6 inches from the solid bottom. Metal plenum of duct may be
connected to the combustible floor base, if not, it must be connected to the
unit supply duct exposed to the supply air opening from the downflow unit.
Exposing combustible (non-metal) material to the supply opening of a downflow unit can cause a fire resulting in property damage, personal injury or
death.
Exception warning to downflow:
Installations on concrete floor slab with supply air plenum and ductwork
completely encased must be not less than 2 inches of concrete (See NFPA
90A).
2.0 GENERAL
The unit can be positioned for bottom return air in the upflow position, left and right
return in the horizontal position, top return in downflow position.
This Air Handler provides the flexibility for installation in any upflow or downflow
horizontal application. The direct drive motors provides a selection of air volume to
match any application. 3-Speed motors provide selections of air flow to meet desired
applications.
Top and side power and control wiring, accessible screw terminals for control wiring
all combine to make the installation easy, and minimize installation cost. Please
contact your local distributor. See fig.1.
5
NOTE: 25” CLEARANCE IS REQUIRED IN THE FRONT
OF THE UNIT FOR FILTER AND COIL MAINTENANCE.
2.1 UNIT DIMENSIONS
ELECTRICAL CONNECTIOS
MAY EXIT TOP OR EITHER SIDE
SUPPLY AIR
HIGH VOLTAGE CONNECTION 7/8”,
1-3/8”, 1-3/4” DIA KNOCK OUTS
FLANGES ARE PROVIDED
FOR FIELD INSTALLATION
5 6
1
10
A
W
LOW VOLTAGE CONNECTION
BREAKER SWITCH
(FOR ELECTRIC HEATER ONLY)
H
VAPOR LINE CONNECTION COPPER (SWEAT)
LIQUID LINE CONNECTION COPPER (SWEAT)
AUXILIARY DRAIN CONNCECTION 3/4”
FEMALE PIPE THREAD (NPT)
AUXILIARY DRAIN CONNECTION 3/4”
FEMALE PIPE THREAD (NPT)
D
PRIMARY DRAIN CONNCETION 3/4”
FEMALE PIPE THREAD (NPT)
UPFLOW UNIT SHOWN;
UNIT MAY BE INSTALLED UPFLOW, DOWNFLOW,
HORIZONTAL RIGHT, OR LEFT AIR SUPPLY.
Fig.1 DIMENSIONS
DIMENSIONAL DATA
6
MODEL
UNIT HEIGHT
"H" IN. [mm]
Dimensions inch [mm]
UNIT WIDTH UNIT LENGHT
"W" IN.[mm]
"D" IN.[mm]
1830
46-1/2"[1180]
19-5/8"[500]
20-5/8"[550]
18"[456]
136/152 [62]/[69]
3642
54-1/2"[1385]
22"[560]
24"[610]
19-1/2"[496]
171/187 [78]/[85]
SUPPLY
DUCT "A"
UNIT WEIGHT
/SHIPPING WEIGHT
(LBS.[kg])
3.0 APPLICATIONS
3.1 VERTICAL UPFLOW
Vertical Upflow configuration is the factory set on all models (see Fig 1).
If a side return air opening is required, field fabricate a return air plenum with an
opening large enough to supply unit and strong enough to support unit weight.
If return air is to be ducted, install duct flush with floor. Use fireproof resilient
gasket 1/8 to 1/4 in. thick between the ducts, unit and floor. Set unit on floor over
opening.
IMPORTANT NOTE
Torque applied to drain connections should not exceed 15.ft.lbs.(see Fig.1&2)
1-9/16
5/16
2-13/16
1-1/4
2-15/16
5/16 1-3/8
2-15/16
Fig.2 DIMENSIONS FOR FRONT CONNECT COIL
3.2 VERTICAL DOWNFLOW
Conversion to Vertical Downflow: A vertical upflow unit may be converted to the
vertical downflow on it. Remove the door and indoor coil and reinstall 180° from
original position. See Fig. 2~3.
IMPORTANT: To comply with certification agencies and the National Electric
Code for downflow application, the circuit breaker(s) on field-installed electric
heater kits must be re-installed per procedure below so that the breaker switch
“on” position and marking is up and, “off” position and marking is down.
To rotate breaker(s): Rotate one breaker set (circuit) at a time starting with
the one on the right. Loosen both lugs on the load side of the breaker.
(Make sure that wires are identified and are reinstalled into proper
breaker).Wires are bundles with wire ties, one bundle going to the right lug
and one bundle going to the left lug.
7
Using a screwdriver or pencil, lift white plastic tab with hole away from
breaker until breaker releases from mounting opening.
With breaker held in hand, rotate breaker so that “on” position is up, “off”
position is down with unit in planned vertical mounting position. insert right
wire bundle into top right breaker lug, ensuring all strands of all wires are
inserted fully into lug, and no wire insulation is in lug.
Tighten lug as tight as possible while holding circuit breaker. Check wires
and make sure each wire is secure and none are loose. Repeat for left wire
bundle in left top circuit breaker lug.
Replace breaker by inserting breaker mounting tab opposite white pull tab
in opening, hook mounting tab over edge in opening.
With screwdriver or pencil, pull blue tab with hole away from breaker while
setting that side of breaker into opening. When breaker is in place, release
tab, locking circuit breaker into location in opening.
Repeat above operation for remaining breaker(s) (if more than one is
provided).
Replace single point wiring jumper bar, if it is used, on line side of breaker
and tighten securely.
Double check wires and lugs to make sure all are secure and tight. Check
to make sure unit wiring to circuit breaker load lugs match that shown on
the unit wiring diagram.
CAUTION
When using the unit with electrical heater, the switch is used only for electrical
heater on the front of panel.
3.3 HORIZONTAL
Horizontal right is the default factory configuration for the units.
Horizontal left isn’t the default factory configuration for the units.
Conversion to Horizontal: A vertical upflow unit may be converted to horizontal left
by removing indoor coil assembly and reinstalling coil as shown for right hand air
supply.
•
Rotate unit into the downflow position, with the coil compartment on top and the
blower compartment on bottom. See Fig. 3.
• Reinstall the indoor coil 180° from original position. Ensure the retaining channel
is fully engaged with the coil rail. See Fig. 3.
• Secondary drain pan kits are required when the unit is configured for the horizontal right position over a finished ceiling and/or living space.
8
A
1:4
ENSURE THE RETAINING
CHANNEL IS FULLY ENGAGED
WITH THE COIL RAIL.
DETAIL A
RAILS
A
RAILS
Fig.3 VERTICAL DOWNFLOW & HORIZONTAL LEFT APPLICATIONS
(lower front service panel removed “view”.)
STRAPS
REAR WATER CATCHER
TOP AIR STOP
HORIZONTAL ADAPTER KIT
FRONT WATER
CATCHER
AUXILIARY HORIZONTAL
DRAIN CONNECTION
VAPOR LINE CONNECTION
LIQUID LINE CONNECTION
VERTICAL DRAIN PAN
PRIMARY DRAIN
CONNECTION
AUXILIARY UPFLOW/DOWNFLOW
DRAIN CONNECTION
The Max. resistant pressure of evaporator is up to 16MPa (2320PSI)
Fig.4 INDOOR COIL AND DRAIN PAN SET-UP
9
MODEL
Pre-Installed
Piston size
1830
3642
068
076
CAUTION
Horizontal units must be configured for right hand air supply or left hand air
supply. Horizontal drain pan must be located under indoor coil. Failure to
use the drain pan can result in property damage.
3.4 INSTALLATION IN AN UNCONDITIONED SPACE
IMPORTANT: There are two pairs of coil rails in the air handler for default and counter
flow application. If the air handler is installed in an unconditioned space, the two
unused coil rails should be removed to minimize air handler surface sweating. The coil
rails can be easily removed by taking off the 6 mounting screws from both sides of the
cabinet.
4.0 ELECTRICAL WIRING
Field wiring must comply with the National Electric Code (C.E.C. in Canada) and any
applicable local ordinance.
WARNING
Disconnect all power to unit before installing or servicing. More than one
disconnect switch may be required to de-energize the equipment. Hazardous voltage can cause severe personal injury or death.
4.1 POWER WIRING
It is important that proper electrical power is available for connection to the unit model
being installed. See the unit nameplate, wiring diagram and electrical data in the
installation instructions.
10
• If required, install a branch circuit disconnect of adequate size, located within sight
of, and readily accessible to the unit.
• IMPORTANT: After the Electric Heater is installed, units may be equipped with
one, two, or three 30/60 amp. circuit breakers. These breaker(s) protect the internal
wiring in the event of a short circuit and serve as a disconnect. Circuit breakers
installed within the unit do not provide over-current protection of the supply wiring
and therefore may be sized larger than the branch circuit protection.
• Supply circuit power wiring must be 75°C minimum copper conductors only. See
Electrical Data In this section for ampacity, wire size and circuit protector require
ment. Supply circuit protective devices may be either fuses or “HACR” type circuit
breakers.
• Power wiring may be connected to either the right, left side or top. Three 7/8”,
1-3/8”, 1-3/4” dia. concentric knockouts are provided for connection of power wiring
to unit.
• Power wiring is connected to the power terminal block in unit electric cabinet.
4.2 CONTROL WIRING
IMPORTANT: Class 2 low voltage control wiring should not be run in conduit with main
power wiring and must be separated from power wiring, unless class 1 wire of proper
voltage rating is used.
• Low voltage control wiring should be 18 Awg. color-coded. For lengths longer than
100 ft., 16 Awg. wire should be used.
•
Low voltage control connections are made to low voltage pigtails extending from
top of air handler (upflow position - see Figure 3).
on the right and left side of the unit for side connection.
•
See wiring diagrams attached to indoor and outdoor sections to be connected.
•
Make sure, after installation, separation of control wiring and power wiring has
been maintained.
4.3 GROUNDING
WARNING
The unit must be permanently grounded. FaIlure to do so can result In
electrical shock causing personal injury or death.
• Grounding may be accomplished by grounding metal conduit when installed in
accord ance with electrical codes to the unit cabinet.
• Grounding may also be accomplished by attaching ground wire(s) to ground lug(s)
provided in the unit wiring compartment.
• Use of multiple supply circuits require grounding of each circuit to lug(s) provided in
unit.
11
4.4 ELECTRICAL DATA
MODEL
1830
3642
VOLTAGE HERTZ
208/230
208/230
60
60
HP
SPEEDS
1/2
3/4
3
3
CIRCUIT
MINMUM CIRCUIT MAXIMUM CIRCUIT
AMPS.(MAX.)
AMPACITY
PROTECTOR
3.0
3.8
15(A)
4.2
5.3
15(A)
"HK" ELECTRIC KIT MCA/MOP DATA
Heat Kit
Model
Heat
HK052C
HK082C
HK102C
HK152C
HK202C
MAX.Fuse or Breaker
(HACR) Ampacity
MIN. Circuit Ampacity
(kW)Electric
240
208
240
208
5
27
23
30
25
7.5
40
34
45
35
10
53
46
60
50
15
79
68
80
70
20
105
91
110
100
"HK" ELECTRIC KIT & AHU MATCHED TABLE
Model 1830
Heat Kit
(kW)Electric
Model
Heat
1.5 Ton
2-2.5 Ton
●
●
5
HK052C
●
●
7.5
HK082C
╳
●
10
HK102C
╳
╳
15
HK152C
╳
╳
20
HK202C
Model 3642
●
●
●
●
●
5.0 AIRFLOW PERFORMANCE
Assumes dry coil with no filter in place.
AIRFLOW DATA
Model
Number
Nominal
Cooling
Motor
Speed
CFM
580
35
52
63
68
80
97
111
128
145
163
650
44
61
73
76
91
110
125
142
159
182
720
57
76
89
93
107
126
148
162
182
199
ADJ
ON 0
1.5 Ton
TYPE
1830
ON 0
123 1
ABC
12 1
DE
ADJ
ADJ
ON
12
DE
or
ON 0
12 1
DE
ADJ
ON 0
12 1
DE
12
External Static Pressure-Inches W.C.[kPa]
0.1[.02] 0.18[.04] 0.2[.05] 0.3[.07] 0.4[.10] 0.5[.12] 0.6[.15] 0.7[.17] 0.8[.20]
Watts
Watts
Watts
Watts
Watts
Watts
Watts
Watts
Watts
0[0]
Watts
AIRFLOW DATA
Model
Number
Nominal
Cooling
Motor
Speed
CFM
750
65
86
98
100
120
139
155
174
196
214
830
84
102
117
123
140
163
183
203
224
247
910
104
123
143
149
168
185
210
236
262
286
ADJ
ON 0
2 Ton
12 1
DE
ADJ
TYPE
ADJ
ON
ON 0
1830
External Static Pressure-Inches W.C.[kPa]
0.1[.02] 0.18[.04] 0.2[.05] 0.3[.07] 0.4[.10] 0.5[.12] 0.6[.15] 0.7[.17] 0.8[.20]
Watts
Watts
Watts
Watts
Watts
Watts
Watts
Watts
Watts
0[0]
Watts
12
DE
123 1
ABC
ON 0
or
12 1
DE
ADJ
ON 0
12 1
DE
AIRFLOW DATA
Model Nominal
Number Cooling
Motor
Speed
CFM
ADJ
ON 0
2.5 Ton
1830
TYPE
*
ON 0
123 1
ABC
12 1
DE
ADJ
or
12
DE
900
103
123
146
154
165
188
209
234
254
285
1000
139
162
187
196
206
230
261
284
311
337
1100
190
217
239
254
270
290
317
353
386
410
1080
106
132
157
165
177
197
225
246
279
310
1200
143
171
200
210
223
248
274
306
329
360
1320
176
211
237
247
269
298
323
355
389
419
1260
157
190
218
228
244
268
294
326
356
390
1400
207
241
275
287
304
334
366
395
425
465
1540
270
309
344
359
382
420
452
488
536
577
ADJ
ON
*
External Static Pressure-Inches W.C.[kPa]
0[0] 0.1[.02] 0.2[.05] 0.24[.06] 0.3[.07] 0.4[.10] 0.5[.12] 0.6[.15] 0.7[.17] 0.8[.20]
Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts
ON 0
12 1
DE
ADJ
ON 0
12 1
DE
ADJ
ON 0
3 Ton
TYPE
12 1
DE
ADJ
ADJ
ON
ON 0
or
12
DE
123 1
ABC
ON 0
12 1
DE
ADJ
ON 0
12 1
DE
3642
ADJ
ON 0
3.5 Ton
TYPE
*
ON 0
123 1
ABC
12 1
DE
ADJ
*
ADJ
ON
12
DE
or
ON 0
12 1
DE
ADJ
ON 0
12 1
DE
* FACTORY SETTING
SCFM correction for wet coil = 4% (208V / 230V ).
13
The air distribution system has the greatest effect on airflow. The duct system is
totally controlled by the contractor. For this reason, the contractor should use only
industry-recognized procedures.
Heat pump systems require a specified airflow. Each ton of cooling requires between
350 and 450 cubic feet of air per minute (CFM), or 400 CFM nominally.
Duct design and construction should be carefully done. System performance can be
lowered dramatically through bad planning or workmanship.
Air supply diffusers must be selected and located carefully. They must be sized and
positoined to deliver treated air along the perimerter of the space. If they are too small
for their intended airflow, they become noisy. If they are not located properly, they
cause drafts. Reture air grilles must be properly sized to carry air back to the blower.If
they are too small, they also cause noise.
The installers should balance the air distribution system to ensure proper quiet airflow
to all rooms in the home. This ensures a comfortable living space.
An air velocity meter or airflow hood can give a reading of system CFM.
6.0 DUCTWORK
Field ductwork must comply with the National Fire Protection Association NFPA 90A,
NFPA 90B and any applicable local ordinance.
WARNING
Do not, under any circumstances, connect return ductwork to any other heat
producing device such as fireplace insert, stove, etc. Unauthorized use of
such devices may result in fire, carbon monoxide poisoning, explosion,
personal injury or property damage.
Sheet metal ductwork run in unconditioned spaces must be insulated and covered
with a vapor barrier. Fibrous ductwork may be used if constructed and installed in
accordance with SMACNA Construction Standard on Fibrous Glass Ducts. Ductwork
must comply with National Fire Protection Association as tested by U/L Standard 181
for Class I Air Ducts. Check local codes for requirements on ductwork and insulation.
•
Duct system must be designed within the range of external static pressure the unit
is designed to operate against. It is important that the system airflow be adequate.
Make sure supply and return ductwork, grills, special filters, accessories, etc. are
accounted for in total resistance. See airflow performance tables in this manual.
•
Design the duct system in accordance with “ACCA” Manual “0” Design for Residential Winter and Summer Air Conditioning and Equipment Selection. Latest
editions are available from: “ACCA” Air Conditioning Contractors of America, 1513
16th Street, N.W., Washington, D.C. 20036. If duct system incorporates flexible air
duct, be sure pressure drop Information (straight length plus all turns) shown in
“ACCA” Manual “D” is accounted for in system.
•
Supply plenum is attached to the 3/4” duct flanges supplied with the unit. Attach
flanges around the blower outlet.
IMPORTANT: If an elbow is included in the plenum close to the unit, it must not be
smaller than the dimensions of the supply duct flange on the unit.
14
•
IMPORTANT: The front flange on the return duct if connected to the blower casing
must not be screwed into the area where the power wiring is located. Drills or sharp
screw points can damage insulation on wires located inside unit.
•
Secure the supply and return ductwork to the unit flanges, using proper fasteners
for the type of duct used and tape the duct-to-unit joint as required to prevent air
leaks.
7.0 REFRIGERANT CONNECTIONS
Keep the coil connections sealed until refrigerant connections are made. See the
Installation Instructions for the outdoor unit for details on line sizing, tubing installation, and charging information.
Coil is shipped with “N2”. Evacuate the system before charging with refrigerant.
Install refrigerant tubing so that it does not block service access to the front of the
unit.
Nitrogen should flow through the refrigerant lines while brazing.
Use a brazing shield to protect the cabinet’s paint and a wet rag to protect the
rubber grommet from being damaged by torch flames. After the refrigerant connections are made, seal the gap around the connections with pressure sensitive gasket.
7.1 CONDENSATE DRAIN TUBING
Consult local codes for specific requirements.
CONDENSATE DRAIN TRAP
DO NOT OPERATE UNIT WITHOUT
CONDENSATE DRAIN TRAP.
3"
3"
UNIT
DO NOT OVERTIGHTEN DRAIN FITTING
UNIT MUST BE SLIGHTLY INCLINED
TOWARD DRAIN CONNECTION
TO APPROVED DRAIN
Fig. 5 CONDENSATE DRAIN TRAP
IMPORTANT:
1. When making drain fitting connections to the drain pan, use a thin layer of Teflon
paste, silicone or Teflon tape and install, hand tighten.
2. When making drain fitting connections to drain pan, do not overtighten. Over
tightening fittings can split pipe connetions on the drain pan.
15
•
•
•
•
•
•
•
•
•
•
Install drain lines so they do not block service access to front of the unit. Minimum
clearance of 24 inches is required for filter, coil or blower removal and service
access.
Make sure unit is level or pitched slightly toward primary drain connection so that
water will drain completely from the pan. (See Fig. 5)
Do not reduce drain line size less than connection size provided on condensate
drain pan.
All drain lines must be pitched downward away from the unit a minimum of 1/8” per
foot of line to ensure proper drainage.
Do not connect condensate drain line to a closed or open sewer pipe. Run condensate to an open drain or run line to a safe outdoor area.
The drain line should be insulated where necessary to prevent sweating and
damage due to condensate forming on the outside surface of the line.
Make provisions for disconnecting and cleaning of the primary drain line should it
become necessary. Install a 3 inch trap in the primary drain line as close to the unit
as possible. Make sure that the top of the trap is below connection to the drain pan
to allow complete drainage of pan (See Fig. 5).
Auxiliary drain line should be run to a place where it will be noticeable if it becomes
operational. Homeowner should be warned that a problem exists if water should
begin running from the auxiliary drain line.
Plug the unused drain connection with the plugs provided in the parts bag, using
a thin layer of teflon paste, silicone or teflon tape to form a water tight seal.
Test condensate drain pan and drain line after installation is complete. Pour water
into drain pan, enough to fill drain trap and line. Check to make sure drain pan is
draining completely, no leaks are found in drain line fittings, and water is draining
from the termination of the primary drain line.
8.0 AIR FILTER (not factory-installed)
• External filter or other means of filtration is required. Units should be sized for
a maximum of 300 feet/min. air velocity or what is recommended for the type filter
installed.
Filter application and placement are critical to airflow, which may affect the heating
and cooling system performance. Reduced airflow can shorten the life of the system’s
major components, such as motor, limits, elements, heat relays, evaporator coil or
compressor. Consequently, we recommend that the return air duct system have only
one filter location. For systems with a return air filter grill or multiple filter grills, can
have a filter installed at each of the return air openings.
If adding high efficiency filters or electronic air filtration systems, it is very important
that the air flow is not reduced. If air flow is reduced the overall performance and
efficiency of the unit will be reduced. It is strongly recommended that a profesional
installation technician is contacted to ensure installation of these such filtration
systems are installed correctly.
IMPORTANT: DO NOT DOUBLE FILTER THE RETURN AIR DUCT SYSTEM. DO
NOT FILTER THE SUPPLY AIR DUCT SYSTEM.THIS WILL CHANGE THE PER FORMANCE OF THE UNIT AND REDUCE AIRFLOW .
WARNING
Do not operate the system without filters. A portion of the dust entrained in
the air may temporarily lodge In the duct runs and at the supply registers.
Any circulated dust particles could be heated and charred by contact with the
air handler elements. This residue could soil ceilings, walls, drapes, carpets
and other articles in the house.
Soot damage may occur with filters in place, when certain types of candles,
oil lamps or standing pilots are burned.
16
9.0 FILTER INSTALLATION DIMENSIONS
FILTER RAILS
UNIT MUST BE SLIGHTLY INCLINED
“H”
FILTER COVER
MANUAL BOLT
RE
TU
RN
AIR
“
OP A”
EN
ING
“D
”
”
“B
DE
”
PT
“W
H
NOTE:
Air filter is factory supplied (optional)
Fig. 6 EXTERNAL FILTER BASE
DIMENSIONAL DATA
MODEL
FILTER SIZE
IN [mm]
"W" IN [mm] "D" IN [mm] "H" IN [mm]
Return width Return length
"B" IN
"A" IN
1830
18Χ20[457Χ508]
18.3[466]
21.6[548]
1[25.4]
20.8
16.3
3642
20Χ22[508Χ559]
20.7[526]
23.9[608]
1[25.4]
23
18.8
• AIR FILTER REMOVAL
1.Remove bolts manually, remove air filter recover, see in Fig 6;
2. Hold the edge of the air filter and extract out .
3. Clean the air filter (Vacuum cleaner or pure water may be used to clean the air filter. If the dust accumulation is
too heavy, use soft brush and mild detergent to clean it and dry out in cool place) .
17
10.0 WIRING DIAGRAM
1. To avoid the electrical shock, please connect the air conditioner with the ground lug.
2. Don't pull the power wiring hard.
3. When connecting the air conditioner with the ground, observe the local codes.
4. If necessary, use the power fuse or the circuit, breaker or the corresponding scale
ampere.
THERMOSTAT
C
R
YELLO W
BLACK
R ED
G
BLACK
R ED
G
GREEN
Y
C
Y
C
R
R
INDOOR UNIT
OUTDOOR UNIT
Fig.7: Control Wiring for A/C systems
W2
B
C
R
Y
G
w1
INDOOR UNIT
Y
OUTDOOR UNIT
Fig 8:Control Wiring for H/P systems.
18
B
PURPLE
C
BLUE
R
YELLOW
BLACK
C
WHITE
R
RED
G
BLACK
w2
RED
GREEN
THERMOSTAT
BLACK/WHITE
E
W
WH IT E/B L ACK
T Y PE
ON 0
WHITE
B L A CK
RED
FUSE
TY P E
5 Ton
2 Ton
FOR OPTIONAL
ELECTRIC HEAT
T3.15A/250V
RY1
1.5 Ton
ON 0
1 23 1 12 1
ABC
DE
GREEN
Nominal
Cooling
ADJ
ON 0
A DJ
ON 0
1 23 1 1 2 1
ABC
DE
FU SE
0
5
IFM
2.5 Ton
3 Ton
3.5 Ton
4 Ton
5 Ton
NOTE
Cut off the power supply when appear "IFM FAILURE".Swich on power
supply again after 20 seconds if power and wiring is correct .
Fig.9:Indoor Unit Wiring Diagram for A/C systems and H/P systems
19
CN2
CN11
WHITE
1
0
BLACK
1
2 68
4
CN19
PCB
C
W2
2 46 8
BLACK
C
W2
W1
W1
0
WHITE
RED
BLACK
12GA TYPE 1015 600V 105 C
14GA TYPE 1015 600V 105 C
18GA TYPE 1015 600V 105 C
FIELD WIRING PER LOCAL CODE
L1
L2
L1
L2
L1
L2
L1
L2
20kW HEAT KIT
SEE NOTE2
CN2
CN11
1
0
BLACK
WHITE
68
1
W1
24
CN19
PCB
C
W2
WHITE
246 8
BLACK
C
W2
W1
0
RED
BLACK
12GA TYPE 1015 600V 105 C
14GA TYPE 1015 600V 105 C
18GA TYPE 1015 600V 105 C
FIELD WIRING PER LOCAL CODE
L1
L2
L1
L2
L1
L2
L1
L2
CB2(63A)
15kW HEAT KIT
CB1(32A
SEE NOTE2
12GA TYPE 1015 600V 105 C
14GA TYPE 1015 600V 105 C
18GA TYPE 1015 600V 105 C
7.5kW HEAT KIT
10kW HEAT KIT
7.5kW CB1 50A
10kW CB1 63A
SEE NOTE2
RED
CN19
BLACK
0
L1 L2
WHITE
L2
W1
1
L1
BLACK
24 68
C
CN11
PCB
CN2
FIELD WIRING PER LOCAL CODE
12GA TYPE 1015 600V 105 C
14GA TYPE 1015 600V 105 C
18GA TYPE 1015 600V 105 C
5kW HEAT KIT
20
SEE NOTE2
RED
Fig.10:Indoor Unit Wiring Diagram for Electric Heat
BLACK
0
L1 L2
WHITE
L2
W1
L1
BLACK
2 4 68
C
CN11
CN19
PCB
CN2
FIELD WIRING PER LOCAL CODE
1
2020001A8964
V1.0
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