Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and
air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered
equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the
literature and on the tags, stickers, and labels that are attached to the equipment.
January 2016
The TEM6 series air handler is designed for installation in a closet,
utility room, alcove, basement, crawlspace or attic. These versatile
units are applicable to air conditioning and heat pump
applications. Several models are available to meet the specific
requirements of the outdoor equipment. Field installed electric
resistance heaters are available.
SSAAFFEETTYY WWAARRNNIINNGG
18-GF74D1-1F-EN
Page 2
SAFETY SECTION
AIR HANDLERS
IImmppoorrttaanntt:: This document contains a wiring diagram,
a parts list, and service information. This is
customer property and is to remain with
this unit. Please return to service
information pack upon completion of work.
IImmppoorrttaanntt:: These instructions do not cover all
variations in systems nor provide for every
possible contingency to be met in
connection with the installation. Should
further information be desired or should
particular problems arise which are not
covered sufficiently for the purchaser’s
purposes, the matter should be referred to
your installing dealer or local distributor.
NNoottee:: Air handlers have been evaluated in accordance
with the Code of Federal Regulations, Chapter
XX, Part 3280 or the equivalent.“SUITABLE FOR
MOBILE HOME USE.”
NNoottee:: Condensation may occur on the surface of the air
handler when installed in an unconditioned
space. When units are installed in unconditioned
spaces, verify that all electrical and refrigerant
line penetrations on the air handler are sealed
completely.
NNoottee:: The manufacturer recommends installing ONLY
A.H.R.I approved, matched indoor and outdoor
systems. Some of the benefits of installing
approved matched indoor and outdoor split
systems are maximum efficiency, optimum
performance, and the best overall system
reliability.
IImmppoorrttaanntt:: Installation of this unit shall be made in
accordance with the National Electric Code,
NFPA No. 90A and 90B, and any other local
codes or utilities requirements.
IImmppoorrttaanntt:: Air handlers do not require repositioning of
the coil or drain pan for upflow or
horizontal left applications. See the
downflow and horizontal right installation
sections for application instructions.
•SLIM FIT FILTER BOX KIT — BAYSF1185AAA,
BAYSF1235AAA, BAYSF1265AAA
Installation Instructions
1. UUnnppaacckkiinngg
Carefully unpack the unit and inspect the contents
for damage. If any damage is found at the time of
delivery, proper notification and claims should be
made with the carrier.
Check the rating plate to assure model number and
voltage, plus any kits match with what you ordered.
The manufacturer should be notified within 5 days
of any discrepancy or parts shortage.
2. LLooccaattiioonn
The air handler should be centrally located and may
be installed in a closet, alcove, utility room,
basement, crawl space or attic. Minimum
clearances must be met.
IIMMPPOORRTTAANNTT:: The downflow sub-base may be
required with electric heat applications.
See minimum clearance table.
The unit must be installed in a level position to
ensure proper condensation drainage. Make sure
the unit is level in both directions within 1/8" on
either side.
When the unit is installed in a closet or utility room,
the room should be large enough, and have an
opening to allow replacement of the unit. All
servicing is done from the front and a clearance of
21" is needed for service unless the closet door
aligns with the front of the air handler.
If you are installing the unit in an unconditioned
space such as an attic or crawl space, you must
ensure that the area provides sufficient air
circulation to prevent moisture collection on the
cabinet during high dew point conditions. A drain
pan must be installed under the entire unit when it
is installed in or above a finished ceiling or in an
unconditioned space.
3. DDuucctt WWoorrkk
The duct work should be installed in accordance
with the NFPA No. 90A "Installation of Air
Conditioning and Ventilating systems" and No. 90B
"Residential Type Warm Air Heating and Air
Conditioning Installation."
The duct work should be insulated in accordance
with the applicable requirements for the particular
installation as required by HUD, FHA, VA the
applicable building code, local utility or other
governing body.
4. CCoonnddeennssaattee DDrraaiinn
The unit is supplied with primary and auxiliary
condensate drains that have 3/4" NPT connections.
The primary drain must be trapped outside the unit
and piped in accordance with applicable building
codes. Do not reduce the drain line size less than
the connection size on the drain pan. Condensate
should be piped to an open drain or to the outside.
All drains must pitch downward away from the unit
a minimum of 1/4" per foot of line to ensure proper
drainage.
IIMMPPOORRTTAANNTT:: If cleanout Tee is used, stand pipe
must be sealed/capped.
Insulate the primary drain line to prevent sweating
where dew point temperatures may be met.
(Insulation is optional depending on climate and
application needs.)
18-GF74D1-1F-EN
5
Page 6
CFM
SELECTION
LIGHT
DIP
SWITCHES
DIP SWITCHES (TYPICAL SETTINGS)
COOLING
HEATING
AIRFLOW
FAN OFF
DELAY
AUXILARY
HEAT SPEEDS
OFFOFF
50%
80%
100% if necessary
50%
Dehumidify
Warm Air Heating
Fast Coil Cooling
Fast Coil Heating
Efficiency
7.5
minutes
3
minutes
1
minute
FAN OPERATION (CFM)
as required
COMPRESSOR OPERATION ON
OFF
FFeeaattuurreess
5. RReeffrriiggeerraanntt PPiippiinngg
Refrigerant piping external to the unit shall be sized
in accordance with the instructions of the
manufacturer of the outdoor equipment.
6. MMeetteerriinngg DDeevviiccee
All units are shipped and installed with an
internally-checked, non-bleed TXV designed for air
conditioning or heat pump operation. Some
outdoor models may require a start assist kit. See
outdoor unit for more information.
7. BBlloowweerr
This unit is supplied with a variable speed motor
with a direct drive blower wheel which can obtain
various air flows. The unit is shipped with factory
set cooling and heating air flows. Performance
tables are available for additional airflow settings.
Disconnect all power to the unit before making any
adjustments to the airflow settings. Be sure to check
the air flow and the temperature drop across the
evaporator coil to ensure sufficient air flow.
Blower speed changes are made on the ECM Fan
Control. The ECM Fan Control controls the variable
speed motor.
There is a bank of 8 dip switches. The dip switches
work in pairs to match the airflow for the outdoor
unit size (tons). cooling airflow adjustment, Fan offdelay options, and heating airflow adjustment. The
switches appear as shown in Figure 2, p. 6
Figure 1. ECM Fan Control
Figure 2. Dip Switches
If the airflow needs to be increased or decreased,
see the Airflow Label on the air handler or Blower
Performance Table.
Be sure to set the correct airflow for cooling and
heating.
Switches 1–4 Cooling Airflow
Switches 5–6 Fan Off Delay Options
Switches 7–8 Auxiliary Heat
IInnddoooorr BBlloowweerr TTiimmiinngg
IIMMPPOORRTTAANNTT:: Leave dip switches 5 and 6 in the “as-
shipped” positions during system startup and check out. Afterwards, adjust as
desired.
Table 3. Cooling Off — Delay Options
SWITCH SETTINGSSELECTIONNOMINAL
5 — OFF6 — OFFNONESAME
5 — ON6 — OFF1.5 MINUTES100%
5 — OFF6 — ON3 MINUTES50%
5 — ON6 — ONENHANCED
(a)
Default setting
(b)
This ENHANCED MODE selection provides a ramping up and ramping
down of the blower speed to provide improved comfort, quietness,
and potential energy savings. The graph shows the ramping process.
(b)
AIRFLOW
50–100%
(a)
6
Figure 3. Enhanced Mode
9. WWiirriinngg
18-GF74D1-1F-EN
Page 7
FFeeaattuurreess
Consult all schematic and pictorial wiring diagrams
of this unit and the outdoor equipment to determine
compatibility of wiring connections and to
determine specific requirements.
All field wiring to the air handler should be installed
in accordance with the latest edition of the National
Electric Code NFPA No. 70 and any local codes.
Check rating plates on unit for rated volts, minimum
circuit ampacity and maximum over current
protection. Supply circuit power wiring must be 75
degree C (167 degree F) minimum copper
conductors only. Copper supply wires shall be sized
to the National Electric Code or local code
requirements, whichever is more stringent.
The unit is shipped wired for 230/240 Volt AC 60 HZ
1 Phase Operation. If the unit is to be operated at
208 VAC 60HZ, follow the instructions on the indoor
unit wiring diagram to change the low voltage
transformer to 208 VAC operation (Ensure unit is
properly grounded).
Class 2 low voltage control wiring should not be run
in conduit with power wiring and must be
separated from power wiring unless class 1 wire
with proper voltage rating is used.
Low voltage control wiring should be 18 Awg, color
coded (105 degree C minimum). For lengths longer
than 100ft., 16 Awg wire should be used. Make
certain that separation of control wiring and power
wiring has been maintained.
10. AAiirr FFiilltteerr
To protect the coil, blower and other internal parts
from excessive dirt and dust an air filter must be
installed before air enters the evaporator coil. A
remote filter must be installed. Consult the filter
manufacturer for proper sizing and maximum
velocity requirements.
IImmppoorrttaanntt:: Air filters shall meet the test requirements
in UL 900.
11. TThheerrmmoossttaatt
Select a thermostat that is commonly used with HP
or AC single stage heating/cooling with electric
heat. The thermostat will energize the fan on a
demand for heat or cool.
Install the thermostat on an inside wall, away from
drafts, lights or other heat sources in a location that
has sufficient air circulation from other rooms being
controlled by the thermostat.
When the thermostat calls for cooling, the circuit
from R to G is completed. The blower motor is
energized directly by the ECM fan control, which
receives the 24VAC signal from the thermostat.
The circuit from R to Y is also complete energizing
the compressor contactor of the outdoor unit. The
contactor will close and start the compressor and
condenser fan motor.
CCoooolliinngg ((hheeaatt ppuummpp))
When the thermostat calls for cooling, the circuit
from R to G is completed. The blower motor is
energized directly by the ECM fan control, which
receives the 24VAC signal from the thermostat.
The circuit from R to Y is also complete energizing
the compressor contactor of the outdoor unit. The
contactor will close and start the compressor and
condenser fan motor.
Circuit R to O energizes the reversing valve to the
cooling position.
HHeeaattiinngg ((hheeaatt ppuummpp))
When the thermostat calls for heating, the circuit
from R to G is completed and the blower motor is
energized directly by the ECM fan control, which
receives the 24VAC signal from the thermostat.
The circuit from R to Y is also complete energizing
the compressor contactor of the outdoor unit. The
contactor will close and start the compressor and
condenser fan motor.
18-GF74D1-1F-EN
7
Page 8
FFeeaattuurreess
In the heating mode, the reversing valve of the
outdoor unit is not energized.
If the indoor temperature continues to fall, the R to
W circuit is completed energizing the electric heat
contactor(s).
NNoottee:: The thermostat must be setup to bring the
blower on when the electric heat is energized.
When the thermostat calls for heating, the circuit
from R to G is completed and the blower motor is
energized directly by the ECM fan control, which
receives the 24VAC signal from the thermostat. The
circuit from R to W is completed energizing the
heating contactor(s).
DDeeffrroosstt
Supplemental heat during defrost can be provided
by connecting the X2 (black) wire from the outdoor
unit to W1 or W2 at the indoor unit. This will
prevent cold air from being discharged from the
indoor unit during defrost.
To obtain proper performance, all units must be
operated and charge adjustments made in
accordance with procedures found in the Service
Facts document of the outdoor unit. After
installation has been completed, it is recommended
that the entire system be checked against the
checkout list located at the back of this document.
See “Checkout Procedures,” p. 36
14. MMaaiinntteennaannccee
The system air filter(s) should be inspected, cleaned
or replaced at least monthly. Make certain that the
access panels are replaced and secured properly
before placing the unit back in operation. This
product is designed for dependable service;
however, periodic maintenance should be
scheduled and conducted by trained professional
service personnel. This service should be
conducted at least annually, and should include
testing and inspection of electrical and refrigerant
components. The heat transfer surface should be
cleaned. The blower motor is permanently
lubricated for normal operating conditions.
8
18-GF74D1-1F-EN
Page 9
Field Wiring
Single Stage, CoolingOnly
ThermostatAir Handler
Outdoor
Unit
R
G
B
W1
W2
B
Y
R
G
B
Y
W1
Blue
24 VAC HOT
FAN
24 VAC Common
SOV
COOL/HEAT1st STAGE
HEATING2nd STAGE
EMERGENCYHEAT
White
White
W2
O
Y1
1. * Units with pigtailsrequirewirenutsforconnections.
TEM6A0C48, TEM6A0C60 COOLING AIRFLOW PERFORMANCE, WET COIL, NO FILTER, NO HEATER
OUTDOOR
UNIT SIZE
(TONS)
3
3.5
4
5
(a)
Factory Default Setting
(b)
Airflow must not exceed 1800 cfm in horizontal right, horizontal left, and downflow applications due to condensate blowoff. The 5 ton high tap shall not be
used in these applications.
SPEED
SETTING
LOW
NORMAL
HIGH
LOW
NORMAL
HIGH
LOW
NORMAL
HIGH
LOW
NORMAL
(a)
(b)
HIGH
AIRFLOW
SETTING
324 CFM/
ton
368 CFM/
ton
423 CFM/
ton
314 CFM/
ton
357 CFM/
ton
411 CFM/
ton
298 CFM/
ton
339 CFM/
ton
389 CFM/
ton
305 CFM/
ton
347 CFM/
ton
399 CFM/
ton
DIP SWITCH SETTING
SW1SW2SW3SW40.10.30.50.70.9
ONONOFFON
ONONOFFOFF
ONONONOFF
OFFONOFFON
OFFONOFFOFF
OFFONONOFF
ONOFFOFFON
ONOFFOFFOFF
ONOFFONOFF
OFFOFFOFFON
OFFOFFOFFOFF
OFFOFFONOFF
AIRFLOW
POWER
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
EXTERNAL STATIC PRESSURE
991
89
1120
118
1282
162
1116
117
1263
156
1449
218
1207
140
1368
190
1564
264
1534
251
1740
344
1995
484
985
133
1119
167
1286
219
1114
165
1266
212
1458
287
1208
193
1374
252
1577
343
1545
328
1758
444
2022
629
974
186
1110
224
1281
280
1105
222
1261
273
1456
352
1201
252
1370
315
1577
411
1545
394
1762
518
2030
717
984
237
1116
279
1280
343
1111
277
1261
334
1449
421
1203
311
1367
381
1567
484
1536
467
1745
594
2005
783
994
303
1122
333
1282
402
1117
331
1263
392
1447
496
1207
366
1367
448
1561
570
1531
550
1734
684
1987
828
Table 9. Air Flow Performance
TEM6A0C48, TEM6A0C60 HEATING AIRFLOW PERFORMANCE, NO FILTER, NO HEATER
OUTDOOR
UNIT SIZE
(TONS)
3
3.5
4
5
(a)
Factory Default Setting
SPEED
SETTING
LOW
NORMAL
HIGH
LOW
NORMAL
HIGH
LOW
NORMAL
HIGH
LOW
NORMAL
(a)
HIGH
AIRFLOW
SETTING
360 CFM/
ton
400 CFM/
ton
440 CFM/
ton
348 CFM/
ton
387 CFM/
ton
426 CFM/
ton
338 CFM/
ton
375 CFM/
ton
413 CFM/
ton
326 CFM/
ton
362 CFM/
ton
398 CFM/
ton
DIP SWITCH SETTING
SW1SW2SW3SW40.10.30.50.70.9
ONONOFFON
ONONOFFOFF
ONONONOFF
OFFONOFFON
OFFONOFFOFF
OFFONONOFF
ONOFFOFFON
ONOFFOFFOFF
ONOFFONOFF
OFFOFFOFFON
OFFOFFOFFOFF
OFFOFFONOFF
AIRFLOW
POWER
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
CFM
Watts
EXTERNAL STATIC PRESSURE
1097
112
1215
142
1333
178
1232
147
1366
189
1500
238
1364
188
1509
241
1659
305
1637
295
1814
381
1990
481
1094
160
1216
196
1338
238
1234
202
1373
252
1511
311
1370
251
1520
315
1674
395
1652
383
1834
493
2017
625
1086
216
1210
255
1333
300
1228
261
1369
314
1510
377
1366
313
1519
382
1676
466
1653
453
1839
570
2025
713
1092
271
1211
314
1331
365
1229
322
1366
381
1502
449
1363
379
1511
453
1662
541
1641
528
1820
645
2000
779
1099
326
1215
369
1332
428
1233
377
1365
447
1498
529
1363
446
1506
535
1654
632
1632
618
1807
730
1982
826
14
18-GF74D1-1F-EN
Page 15
Table 10. Air Flow Performance
TEM6A0D48, TEM6A0D60 COOLING AIRFLOW PERFORMANCE, WET COIL, NO FILTER, NO HEATER
5. Slide the coil assembly out. Remove and discard the horizontal
drain pan.
Figure 6. TEM6A0C48 and TEM6A0C60 Only
Figure 7. All other models
6. On both sides of the cabinet, remove the two screws that hold the
coil support brackets and retain for later use. Seal the holes to
prevent air leakage.
7. Rotate and lift the two coil support brackets to remove from front
slots in cabinet.
8. Bend the two tabs on each of the coil support brackets. Tabs
should be bent inward so they are parallel to the bottom flange.
9. Rotate the unit into the downflow orientation.
10. Pre-drill four clearance holes in the cabinet at dimples located
below the location the screws were removed for the coil support
brackets. There are two holes per side. See location of holes
11. Replace the center horizontal bracket removed in Step 3. Use the
screws retained from Step 3 to attach.
12. Place coil support brackets into the lower set of slots and rotate
into place. Push downward to lock into place.
13. Secure each bracket with 2 screws that were previously removed.
Follow the conversion steps when installing the air handler in
horizontal right configuration.
1. Remove the front panels from the air handler. The coil and line set
panel do not need to be separated.
2. Remove the fasteners on both sides of the coil. Retain the coil
retaining brackets and screws.
Note: The TEM6A0C48 and TEM6A0C60 will have a coil retaining
bracket and a shipping bracket. All other coils will have
two coil retaining brackets.
3. Remove the two screws holding the center horizontal bracket and
rotate out of place. Retain parts.
Figure 16. TEM6A0C48 and TEM6A0C60 Only
Figure 17. All other models
4. Make note of the horizontal drain pan orientation (up/down).
5. For the TEM6A0C48 and TEMA0C60, remove the drain pan
support bracket at the top of the drain pan and retain for later
use.
Note: The drain pan support bracket should be removed to avoid
tearing the cabinet insulation.
Figure 18. TEM6A0C48 and TEM6A0C60 Only
28
18-GF74D1-1F-EN
Page 29
Table 17. Horizontal Right (continued)
6. Slide the coil assembly out.
7. Change location of the front and rear water diverter brackets by
removing the screws on the water diverter brackets that are
located on the left side of the coil. Attach the water diverters to
the right hand side of the coil using the same screws.
Important: The coil slabs are different and the mount hole locations
will vary. See the illustrations on the following pages that
correspond to the unit tonnage to see the correct
mounting position of the water diverter bracket.
Important: The water diverter brackets are not symmetrical and will
vary by tonnage.
Important: There is no change required for the TEM6A0C48 and
8. For the TEM6A0C48 and TEM6A0C60 models, remove the two
shipping brackets from the coil and discard.
9. Relocate the horizontal drain pan from the left side of the coil to
the right side.
10. Remove the two drain plugs and the drain pan support bracket
from the front of the drain pan and insert them in the drains at the
rear of the drain pan.
Note: For the TEM6A0C48 and TEM6A0C60, the drain pan
support bracket should have been removed earlier.
Figure 34. TEM6A0C48 and TEM6A0C60 Only
Figure 33. TEM6A0C48 and TEM6A0C60 Only
Figure 35. All other models
Important: When reinstalling coil in Step 12, it is important that the
coil corner locks in place under the tab in the side bracket
to support the coil weight horizontally.
11. Reinstall the drain pan support bracket. The bracket should be
located between the two drain plugs as shown.
Note: For the TEM6A0C48 and TEM6A0C60 models only, to avoid
tearing the interior insulation, the drain pan support bracket
should be installed after the coil has been put into the unit in
Step 12.
12. Slide the coil assembly back into the air handler cabinet.
IMPORTANT: Make sure that the coil corner locks in place under
the tab in the side left bracket to support the coil
weight in the horizontal right position.
13. For the TEM6A0C48 and TEMA0C60 only, install the drain pan
support bracket on the top of the drain pan opposite the drain
ports and as close to the end as possible
14. Replace the center horizontal bracket using screws removed
earlier in Step 3.
15. Replace the two coil retaining brackets removed in a previous
step.
Note: The TEM6A0C48 and TEM6A0C60 will have only one coil
retaining bracket.
16. Replace all panels.
Figure 38. TEM6A0C48 and TEM6A0C60 Only
Figure 39. All other models
18-GF74D1-1F-EN
35
Page 36
Checkout Procedures
The final phase of the installation is the system Checkout Procedures. The following list represents the most common items covered in a
Checkout Procedure. Confirm all requirements in this document have been met.
All wiring connections are tight and properly secured.
Voltage and running current are within limits.
All refrigerant lines (internal and external to equipment) are
isolated, secure, and not in direct contact with each other or
structure.
All braze connections have been checked for leaks. A vacuum of
350 microns provides confirmation that the refrigeration system
is leak free and dry.
Final unit inspection to confirm factory tubing has not shifted
during shipment. Adjust tubing if necessary so tubes do not rub
against each other or any component when unit runs.
Ductwork is sealed and insulated.
All drain lines are clear with joints properly sealed. Pour water
into drain pan to confirm proper drainage.
Supply registers and return grilles are open, unobstructed, and
air filter is installed.
Indoor blower and outdoor fan are operating smoothly and
without obstruction.
Indoor blower motor set on correct speed setting to deliver
required CFM.
Cover panels are in place and properly tightened.
For gas heating systems, manifold pressure has been checked
and all gas line connections are tight and leak free.
For gas heating systems, flue gas is properly vented.
System functions safely and properly in all modes.
Owner has been instructed on use of system and given manual.
The manufacturer optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand,
the leader in creating and sustaining safe, comfortable and energy efficient environments, the manufacturer offers a
broad portfolio of advanced controls and HVAC systems, comprehensive building services, and parts. For more
information, visit www.IRCO.com.
The manufacturer has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice.