IOM - AHI Carrier

IOM - AHI Carrier
42TX012-060
Direct Expansion Fan Coil
With Remote Control
50/60 Hz
Installation, Start-Up and
Service Instructions
CONTENTS
Safety Consideration
Introduction
Physical Data
Receiving
Inspection
Protection
Base Unit Dimensions
Preliminary Check
Prepare Jobsite for
Identify and Prepare Units
Unit Configuration
Rigging and Unpacking
Installation
Placing unit in position
Making Piping Connections
Electrical Data
Typical Piping & wiring
Connections
Page
1
2
2
2
2
2
3
4
4
4
4
4
5
5
5
6
Test and Insulate
Make Electrical Connections
Make Duct Connections
Make Final Preparation
Typical Wiring Diagram –
Cool Only
Typical Wiring Diagram – Cool
Only with Electric Heater
Control Board & Remote
Control Specifications
Hardware Settings
Error Codes
Control Board & Remote
Control Functions
Start-up
Service
Start-up Checklist
Page
7
7
7
7
8
9
10
10
10
11
13
13
14
SAFETY CONSIDERATIONS
Installation and servicing air-conditioning equipment can be hazardous due to system pressure and electrical
components. Only trained and qualified service personnel should install, repair, or service air conditioning
equipment. Untrained personnel can perform basic maintenance functions of cleaning coils and filters and
replacing filters. All other operations should be performed by trained service personnel When working on airconditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other
safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for un-brazing operations.
Have fire extinguishers available for all brazing operations.
WARNING
ELECTRIC SHOCK HAZARD To avoid the possibility of electrical shock, open and tag all
service switches before installing this equipment.
-1-
INTRODUCTION
This document contains general installation instructions for the 42TX unit Fan Coils. Refer to the unit-wiring
diagram installed on the blower housing or specific manufacturer literature for any other type of factorymounted controls.
See drawings for unit configurations, dimensions, clearances, and pipe connections. Refer to unit wiring label
for all electrical connections; follow NEC (National Electrical Code) and local codes.
Table 1 – PHYSICA L DATA
Model
CFM*
Capacity (Tons)*
Motor HP
Input Watts @ Med Speed & 25 Pa
ESP
Number of Motors
Evaporator Coil
Coil Material
Coil Face Area, m^2
Coil Connection Type
Coil Connection Size
Number of Rows
Fin Denisty/ Inch
Drain Diameter
Blower
Blower Diameter / Width, mm
Filter Type
Unit Dimensions
Width, mm
Depth, mm
Height, mm
Net Weight, kg
42TX-12
592
1
1/15
64
0.15
156/170
42TX-18
692
1.5
42TX-24
692
2
1/10
70
80
1, 3 Speed
42TX-30
780
2.5
80
42TX-36
42TX-48
1181
1385
3
4
1/15
130
42TX-60
1572
5
1/10
146
2, 3 Speed
Smooth copper tubes/ Aluminum fins with double wavy fin
0.15
0.21
0.26
0.31
0.44
Sweat Type
5/8 Inch
7/8 Inch
3
14
5/8 Inch
Direct drive forward curved centrifugal fan
156/220
156/170
Washable Aluminum Filter
800
1010
1220
23
28
275
32
1430
590
1430
160
0.52
156/220
1640
375
39
43
49
56
RECEIVING
42TX fan coil units are shipped individually packed in carton boxes. When cartons are individually off loaded
from the truck, do not roll, nor throw, or drop the carton to avoid damage to the contents. Store boxes upright
as the symbols on the boxes indicated. Do not stack units more than 6 units high for size 048-060 and 8 units
high for other sizes.
INSPECTION
Check the shipment against shipping list and remove unit from the carton and take off protective covering. If
the unit has been damaged, file claim with transportation company and notify Carrier immediately.
PROTECTION
Protection unit from damage caused by job site debris. Do not allow dust, debris and water to get into the unit.
These
will
damage
unit’s
component
and
unit’s
performance
will
be
affected.
-2-
Notes:
- The piping connections drain pan outlet and control box are located on
the right hand side facing the airflow as factory standard, They however
can be relocated to the left hand side facing air flow in the field when
needed.
- Unit should be installed for horizontal discharge only. Suspend
horizontally using the factory-provided holes located at the topside
flanges of the unit.
UNIT SIZE
A
B
42TX012
647
161
42TX018
857
161
42TX024
857
183
42TX030
1067 183
42TX036
1277 183
42TX048
1277 183
42TX060
1487 183
*All Dimensions in mm
C
D
E
F
G
H
I
J
K
L
M
N
O
P
139
139
139
139
139
139
139
231
231
231
231
231
231
231
160
160
160
160
160
160
391
391
391
391
391
391
216
447
685
895
895
1105
1315
1315
1525
709
919
919
1129
1339
1339
1549
275
275
275
275
275
375
375
161
161
161
161
161
161
161
196
196
196
196
196
295
295
503
603
603
603
603
603
713
454
454
454
454
454
454
454
432
432
410
410
410
410
410
52
52
52
52
52
103
103
181
181
179
179
179
243
243
Fig.1 - Base Unit Dimensions – 42TX
-3-
PRELIMINARY CHECK
Following is a checklist which should be checked before the installation is started. The installer should be familiar
with each of the following requirements before the actual installation.
a)
b)
c)
d)
e)
f)
g)
Space requirement and clearance, See Fig.2.
Ceiling or mounting strength.
Piping connections.
Condensate drain connection.
Power supply and wiring.
Air duct connections.
The condensing unit model number is the recommended by the factory (as per the below table).
Table 2 – Matching Data & Performance
App.
50Hz
60Hz
CAP.
TONS
INDOOR MODEL
OUTDOOR
MODEL
OUTDOOR
UNIT VOLTAGE
1.0
1.5
2
2.5
3
4
5
1.0
1.5
2
2.5
3
4
4
5
5
42TX-012-701R
42TX-018-701R
42TX-024-701R
42TX-030-701R
42TX-036-701R
42TX-048-701R
42TX-060-701R
42TX-012-301R
42TX-018-301R
42TX-024-301R
42TX-030-301R
42TX-036-301R
42TX-048-301R
42TX-048-301R
42TX-060-301R
42TX-060-301R
38HKR012DS70
38HKC018DS70
38HKC024DS70
38HKC030DS70
38HKC036DS70
38HKC048DS90
38HKC060DS90
38HKR012DS30
38HKC018DS30
38HKC024DS30
38HKC030DS30
38HKC036DS30
38HKC048DS30
38HKC048DS50
38HKC060DS30
38HKC060DS50
220-240/1/50
220-240/1/50
220-240/1/50
220-240/1/50
220-240/1/50
400/3/50
400/3/50
230/1/60
230/1/60
230/1/60
230/1/60
230/1/60
230/1/60
230/3/60
230/1/60
230/3/60
PREPARE JOSITE FOR UNIT INSTALLATION
To save time and to reduce the possibility of costly
errors, set up a complete sample installation in a
typical room at jobsite. Check all critical dimensions
such as pipe, wire, and duct connection requirements.
Refer to job drawings and product dimension
drawings as required. Instruct all trades in their part
of the installation.
ARI NET
CAPACITY
(KBtuh)
13.2
19.4
24.9
29.5
35.0
45.0
59.0
13.2
19.4
24.9
29.5
35.0
45.0
45.0
59.0
59.0
ARI*
CFM
EER
TOTAL
(kW)
500
650
650
800
1,100
1,400
1,600
500
650
650
800
1100
1400
1400
1550
1550
9.4
8.0
8.0
9.3
8.8
10.0
9.8
9.4
8.1
8.0
9.2
8.8
10.0
10.0
9.8
9.8
1.4
2.4
3.1
3.2
4.0
4.5
6.0
1.4
2.4
3.1
3.2
4.0
4.5
4.5
6.0
6.0
UNIT CONFIGURATION
The piping connections, drain pan outlet and control box
are located on the right side of the unit facing the airflow
direction as factory standard as shown in the unit picture.
Left hand side connection is factory option. However, the
connections side can be relocated at site.
RIGGING AND UNPACKING
Unit should not be removed from carton until reaching
final location to avoid damage. Inspect unit for shipping
damage and file claim with transportation company if
necessary, check nameplate voltage against available
power supply. For special installation, consult local
building and electrical codes.
IDENTIFY AND PREPARE UNITS
Be sure power requirements match available power
source. Refer to unit nameplate and wiring diagram.
1. Check all tags on unit to determine if shipping
screws are to be removed. Remove screws as
directed.
2. Rotate the fan wheel by hand to ensure that the fan
is unrestricted and can rotate freely. Check for
shipping damage and fan obstructions.
-4-
INSTALLATION
MAKING PIPING CONNECTONS
PLACING UNIT IN POSITION
Qualified personnel in accordance with local and national
codes must perform all piping connections. Refer to Table.1
for piping connections.
NOTE: It is important to have a common understanding of
which side of the unit is the right hand side and which is the
left hand side. When facing the supply air outlet from the
front of the unit (air blowing in your face), your right hand
will be on the right side of the unit and your left hand will be
on the left side of the unit. See Fig. 4. Refer to Fig. 5 for
typical piping connections. Use the condensing unit
manufacturer's recommended line sizes and requirements;
see table.2. Suction line must be insulated for correct
operation. Use refrigerant-grade copper lines only. The unit
is not applied as a heat pump. Thermostatic expansion
valve (TXV) and sensing bulb are factory-installed on units
when DX coil option is chosen with distributor and TXV.
1. Select the unit location. Allow adequate space for free
air circulation, service clearances, piping and electrical
connections, and any necessary ductwork, see fig.3. For
specific unit dimensions, refer to the submittal drawings.
Allow clearances according to the local and national
electrical codes.
2. Be sure either the ceiling is able to support the weight of
the unit. See Table 1 for nominal unit weight.
3. Move unit into position. Ensure unit is level or pitched
towards drain to ensure proper drainage and operation.
4. Mounting units to the ceiling - When unit is lifted, access
to the. mounting holes is on the top panel of the unit.
Hanger rods, fasteners, and other required hardware must
be field-supplied.
Fig.2 – Minimum clearance required.
Fig3- Changing the coil connection side
Fig.4 – Unit end reference
Table.3 – Electrical Data
Nominal Capacity Ton
Condenser Control Input
1.0
1.5
2
2.5
3
4
5
1.0
1.5
2
2.5
3
4
5
Power Supply
Voltage
Min
Max
Fan
FLA
198
264
1.0
360
360
440
440
2.3
198
264
1.0
360
360
440
440
2.3
220-240/1/50
24 V
220-240/1/60
LEGEND
FLA — Full Load Amps
LRA — Locked Rotor Amps
RLA — Rated Load Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Over current Protection Amps
-5-
FIELD SUPPLIED
TYPE L REFRIGERANT
TUBING
FEMALE SWEAT
CONNECTIONS
AT SERVICE VALVES
FIELD SUPPLIED
FILTER DRIER
FIELD SUPPLIED
24 V CONTROL
WIRING
FIELD SUPPLIED
WEATHERPROOF
FUSED DISCONNECT
AND WIRING PER NEC
FIELD SUPPLIED
CONDENSATE
DRAIN LINE
TO OPEN DRAIN
FIELD SUPPLIED
FUSED DISCONNECT
AND WIRING PER NEC
REMOTE CONTROL
CONTROL BOARD
NOTES:
1. All piping must follow standard refrigerant piping techniques.
2. All wiring must comply with the applicable local and national codes.
3. Wiring and piping shown are general points-of-connection guides only and are not intended for a special installation.
4. Insulate condensate line if run above a conditioned space.
5. The control board kit is factory supplied, no thermostat required.
6. The wall mounted wired room controller could control all system functions without wireless remote control.
7. Standard wire length for the control board is 7.5 m. If extension is required, please contact your local carrier dealer.
Fig.5 – Typical wiring & piping connections
-6-
TEST AND INSULATE
alignment problems and noise transmission where
specified.
Set unit markings for minimum clearance to
combustible materials and first 3 ft of ductwork.
Install ductwork, accessory grilles and plenums so
that they do not restrict access to filter.
Cut openings for supply-air and return-air grilles.
Be careful not to cut wires, piping or structural
supports.
When all joints are complete, perform hydrostatic
test for leaks. Vent all coils at this time. Check
interior unit piping for signs of leakage from
shipping damage or mishandling. If leaks are
found, notify a Carrier representative before
initiating any repairs. Release trapped air from
system (refer to Make Final Preparations section).
MAKE ELECTRICAL CONNECTIONS
Refer to unit nameplate for required supply
voltage, fan and heater amperage and required
circuit ampacity. Refer to unit wire diagram for unit
and field wiring; see fig.6 & 7. Make sure all
electrical connections are in accordance with unit
wiring diagram and all applicable codes. The fan
motor(s) should never be controlled by any wiring
or device other than the factory-supplied control
board and remote control.
All field wiring must be in accordance with
governing codes and ordinances. Any modification
of unit wiring without factory authorization will
invalidate all factory warranties and nullify any
agency listings.
CAUTION
Prevent dust and debris from settling in unit.
If wall finish or color is to be spray applied,
cover all openings to prevent spray from
entering unit. Unit efficiency will be reduced.
MAKE FINAL PREPARATIONS
1. Turn off power to the unit (open unit electrical
disconnect).
2. Install the wired control panel kit and perform
any other final wiring as applicable, see the
control specifications on page 10.
3. Clean dirt, dust, and other construction debris
from unit interior. Be sure to check fan wheel and
housing.
4. Rotate fan wheel by hand to be sure it is free
and does not rub housing. Check that wing nuts
securing fan assembly to fan deck are tight.
5. Ensure all panels and filters are installed before
checking fan operation. Turn on power to the unit.
IMPORTANT
Wiring diagrams shown depict typical control
functions. Refer to unit wiring label for specific
functions.
MAKE DUCT CONNECTIONS
Install all ductwork to and from unit in
accordance with all applicable codes. Duct
construction must allow unit to operate within
duct external static pressure limits as shown on
job submittals. Units designed to operate with
ductwork may be damaged if operated without
intended ductwork attached.
Units provided with outside air should have some
method of low-temperature protection to prevent
freeze-up. Insulate ductwork as required. Use
flexible connections to minimize duct-to-unit
IMPORTANT
Do not start-up or operate unit without filter.
Be sure filter and unit interior are clean.
8. Be sure drain line is properly and securely
positioned and that the line is clear. Pour water
into drain to check operation.
-7-
Fig.6 – Typical Wiring Diagram- Cool Only
-8-
Fig.7 – Typical Wiring Diagram- Cool Only with electric heater.
-9-
CONTROL BOARD & REMOTE CONTROL
SPECIFICATIONS
The controller is used to control air cooled ducted
split unit, supports the following functions:
Mode:Cool, Dry, Fan, Heat, Auto Cool-Heat
Indoor fan speed:Auto, High, Medium, Low
Sleep mode
Compressor protections:- Comp 3 minutes restart protection
- Indoor coil anti freeze
- Room sensor and indoor coil sensor failure
monitoring
Non volatile memory – keep system settings
Programmable On/Off timer
Random restart to minimize voltage dip during
compressor first cut in cycle upon power up.
ƒ
Hardware setting
There is a 3 pin shunt jumper on the main
board to select a) Cool connected – Cool model only.
b) Heat connected – Cool-Heat model.
ƒ
Error code
Table 4 – Error Codes
Fault
Room sensor fault
Indoor coil sensor fault
Comp fault
ƒ
Control Board
Error code
E1
E2
E4
If multiple faults happen at the same
time, the corresponding error code will
be shown one after another.
Remote Control Handset
Fig.8 – Control Board & Remote Control
- 10 -
CONTROL BOARD & REMOTE
CONTROL FUNCTIONS
(1) ON/OFF KEY
If you press this key, the systm will begin operation,
Press the key again, and operation stops. (You can
hear a receiving beep)
If you press this key immediately after turning off
the system, the compressor will not operate for 3
minutes to prevent overloading.
(6) TEMPREATURE UP KEY
By pressing Temperature Up Key, the setting
temperature increases by 1ºC with each press. For
optimum operation set the temperature between 20-240
C (68-75F).
(7) TEMPREATURE DOWN KEY
By pressing temperature down key, the setting
temperature decreases by 1ºC with each press.
(2) OPERATION MODE SELECTING KEY
Toggles the operation mode: Cool, Dry, Heat, or
Fan only
“COOL” Led
Lights on when selecting COOL mode.
“DRY” Led
Lights on when selecting DRY mode.
“HEAT” Led
Lights on when selecting Heat mode.
“FAN” Led
Lights on when selecting FAN mode.
- If you set the desired room temperature, then system
will maintain the room temperature as set. In COOL
mode, if the room temperature is higher than the
setting, the compressor will automatically turn on
provide a cooling effect. If the room temperature is
lower than the setting, the compressor will
automatically turn off to stop cooling operation. In
HEAT mode, if the room temperature is lower than the
setting, the compressor for heat pump system will
automatically turn on to provide a heating effect. If the
room temperature is higher than the setting, the
compressor for heat pump system will automatically
turn off to stop heating operation.
(3) SLEEP KEY
Press this key to set the SLEEP timer and then the
sleep led will light on.
To cancel the sleep timer press this key again.
- Sleep function for healthy sleep to control
automatically the room temperature and stop
automatically the operation of the air conditioner
after certain set off time.
- In Dry mode, the fan speed runs automatically at low
speed and compressor stopping and running is
controlled by the difference between room and setting
temperatures and by continuous running time.
- Sleep mode is valid in cool or heat mode and
invalid in Fan mode.
- In Dry mode, the humidity reduced in the space to be
air-conditioned.
(4) KEY LOCK MODE
To activate key lock mode, hold down for 3
seconds, temp. Down Key (5) and Mode Key (2).
In key lock mode, all keys are not valid except
ON/OFF Key (1) to turn ON/OFF the system
- In Fan mode, there will be no cooling or heating
effects; only the fans of indoor unit will run for
ventilation.
Notes:
Hold down Temp Down and Sleep button for one
second to enter into coil temperature display mode.
Press Temp Up key to display indoor coil
temperature, High Fan LED flashes. With the same
sequence to exit coil temperature display mode.
Temperature display range is -9C to 78 ºC.
Notes:
(A) Temperature setting range is 16ºC to 30ºC or 60ºF
to 85ºF. For optimum operation set the temperature
between 20-240 C (68-75F).
(B) Hold down at the same time for about 5 seconds,
Temp down and fan keys will toggle the temperature
setting from degree C to degree F and vice versa.
(5) FAN SPEED SELECTING KEY
Toggles the fan speed: Auto, High, Medium, or Low
“AUTO” Led
Lights on when selecting Auto fan speed.
“HIGH” Led
Lights on when selecting High fan speed.
“MED” Led
Lights on when selecting Medium fan speed.
“LOW” Led
Lights on when selecting Low fan speed.
(C) Press any temperature key will flash the current
setting temperature for 4 seconds.
Should there be no further key press, it will revert to
room temperature display mode.
Room temperature display range is 0C to 50C or 32F
to 99F.
Note: Fan key is invalid in Dry mode.
(D) Temp keys are invalid in Fan mode.
- 11 -
(8) TIMER KEY
Upon count down of the number of set hours, the
system will switch from OFF to ON or ON to OFF.
- OFF Timer Function to stop automatically, the air
conditioner after certain set OFF time.
- ON Timer Function to start automatically, the air
conditioner after certain set ON time.
Timer setting is I HR to 24 HR. The timer led will
light on when operating the Timer Function
First key press will flash the digital display and
Timer Led for 3 seconds.
Notes:
(A) The digital displays show the number of hours
previously set, only the Timer Led flashes.
(B) Subsequent 3 seconds will show the number of
hours previously set, only the timer led flashes.
(C)Should there be no further key press, it will revert
to normal mode.
(D)Should Timer key is not released timer setting will
increase automatically every 0.5-second.
(9) DISPLAY SCREEN
Displays the set temperature and displays also the
TIMER settings when adjusting it.
(10) SENSOR
Receives the remote controller’s signal.
- 12 -
START-UP
vacuum to remove dirt and debris from
scroll.Wipe all fan surfaces with a damp cloth.
42TX unit is designed to operate in hot and humid
conditions without condensation problem because
of the rubber insulated drain pan. Refer to the
startup checklist in page 14 for startup procedure.
CLEAN ELECTRIC HEATER
Lock open and tag unit electrical service switch.
1. Remove dust, dirt, or foreign material before
start-up. Do not block normal airflow to and from
units; blockage may damage electric heaters.
2. Clean heater elements with soft brush or
vacuum cleaner as necessary.
SERVICE
TO CLEAN COIL
1. Be sure electrical service switch is open,
locked, and tagged while working on unit.
2. Remove supply-air grille access panel and
brush between coil fins with stiff wire brush.
Follow-up by cleaning with vacuum cleaner. If
coil is cleaned with air hose and nozzle, take care
not to drive dirt and dust into other components.
CLEAN OR REPLACE AIR FILTERS
Lock open and tag unit electrical service switch.
At the start of each cooling season and after each
month of operation (more or less depending on
operating conditions) replace throwaway filter or
clean permanent filter.
THROWAWAY FILTER — Replace filter with a
good quality filter of the size shown in Table 1.
Do not attempt to clean and reuse disposable
filters.
PERMANENT FILTER
1. Tap on solid surface to dislodge heavy
particles.
2. Wash in hot water.
3. Set filter on end so that water drains out
through slots in frame. Allow filter to dry
thoroughly.
See Fig.9 for filter access.
CHECK DRAIN
Lock open and tag unit electrical service switch.
Check drain pan, drain line and trap at start of
each cooling season. A standard type pipe cleaner
for 5/8-in. ID pipe can be used to ensure that pipe
is clear of obstruction so that condensate is carried
away.
CLEAN FAN WHEEL
Lock open and tag unit electrical service switch.
For access to fan assembly, remove front or
bottom panel.
Fan assembly may be removed from its tracks if
unit has a long conduit lead. Use a stiff brush or
Fig.9 – Filter Access.
- 13 -
START-UP CHECKLIST FOR 42TX SERIES FAN COIL AIR CONDITIONERS
I. Project Information
Job Name
_______________________________________________________________________
Address ________________________________________________________________________
City ______________________________________________State __________ Zip __________
Installing Contractor
_______________________________________________________________
Sales Office _____________________________________________________________________
Start-up Performed By
_____________________________________________________________
INSPECTION, INSTALLATION, & START-UP CHECKLIST
ITEM
Receiving & Inspection
1. Unit received undamaged
2. Unit received complete as ordered
3. Unit arrangement/hand correct
4. Unit structural support complete &
correct
Handling & Installation
5. Mounting grommets / isolators
used
6. Proper access provided for unit &
accessories
9. Proper electrical service provided
7. Proper overcurrent protection
provided
8. Proper service switch / disconnect
provided
9. Proper refrigerant line sizes to unit
10. All service to unit in code
compliance
11. All shipping screws & braces
removed
12. Unit protected from direct &
foreign matter
Cooling / Heating Connections
13. Connect field piping to unit
14. Pressure test all piping for leaks
15. Install drain line & traps as
required
16. Insulate all piping as required
Ductwork Connections
17. Install ductwork, Fittings, &
Grilles as required
18. Flexible duct connections at unit
19. Proper supply & return grille type
& size used
20. Insulate all ductwork as required
COMPLETE
- 14 -
ITEM
Electrical Connections
21. Refer to unit wiring diagram
22. Connection incoming power
service(s)
23. Install & connection “furnish only”
parts
24. All field wiring in code compliance
Unit Startup
25. General visual unit & system
inspection
26. Check for proper fan belt tension
(42BH Units Only)
27. Check for proper fan rotation
28. Record electrical supply voltage
29. Record ambient temperatures
30. Check all wiring for secure
connections
31. Close all unit isolation valves
32. Flush water systems
33. Fill systems with water /
refrigerant
34. Vent water systems as required
35. All ductwork & grilles in place
36. All unit panels & filters in place
37. Start fans, pumps, chillers, etc.
38. Check for overload condition of all
units
39. Check all ductwork & units for air
leaks
40. Balance air systems as required
41. Record all final settings for future
use
42. Check piping & ductwork for
vibration
43. Verify proper cooling operation
44. Verify proper heating operation
45. Reinstall all covers & access
panels
COMPLETE
Notes
- 15 -
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations
42TX-01 IOM
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