Carrier 24ANB748A0031030 Installation guide

Carrier 24ANB748A0031030 Installation guide
Installation Instructions
SAFETY
Improper installation,
CONSIDERATIONS
adjustment,
alteration,
service,
Indoor
Thermostat
Model
Infinity®
Control
or use can cause explosion,
fire, electrical
shock,
or other
conditions
which may cause death, personal injury, or property
when modifying
this product. Refer to the individual
packaged with the kits or accessories when installing.
literature
extinguisher
and follow
and attached
available.
warnings
all
Read
these
or cautions
to the unit. Consult
safety
information.
This
When you see this symbol on
manuals, be alert to the potential
instructions
included
in
local building
codes
and
is the safety-alert
symbol/_k
the unit and in instructions
or
for personal injury.
Understand
these signal words; DANGER,
WARNING, and CAUTION.
These
words are used with the safety-alert
symbol. DANGER
identifies
the most serious hazards which will result in severe personal injury
or death. WARNING
signifies
hazards
which could
result in
personal injury or death. CAUTION
is used to identify unsafe
practices which would result in nfinor personal injury or product
and property
damage.
NOTE is used to highlight
suggestions
which will result in enhanced installation,
reliability, or operation.
NOTE:
In some
gas pulsations
cases noise
2. Ensure that vapor
for unit capacity.
this warning
could
Before
installing,
modifying,
or
electrical disconnect
switch nmst be
install a lockout tag. There may be
switch. Lock out and tag switch with
CUT
result in personal
injury
and liquid
area has been traced to
of equipment.
tube diameters
3. Run refrigerant tubes as directly
necessary turns and bends.
4. Leave some
slack between
as possible
structure
etc. where
are appropriate
by avoiding
and unit to absorb
unvi-
bration.
5. When
passing
refrigerant
tubes through
the wall, seal open-
ing with RTV or other pliable silicon-based
caulk.
(See Fig.
1.)
6. Avoid direct tubing contact with water
floor joists, wall studs, floors, and walls.
pipes,
duct work,
7. Do not suspend refrigerant tubing from joists and studs with
a rigid wire or strap which comes in direct contact with
Fig. 1.)
that tubing
rounds vapor
HAZARD
in the living
installation
1. Locate unit away from windows,
patios, decks,
unit operation sound may disturb customer.
tubing.(See
Failure to follow
or death.
Yes
RECOMMENDATIONS
from improper
8. Ensure
ELECTRICALSHOCK
Yes
INSTALLATION
current editions of the National Electrical Code ( NEC ) NFPA 70.
In Canada, refer to current editions of the Canadian electrical code
CSA 22.1.
Recognize
24AN B7/24AN B1
2-stage
Thermostat
instructions
Follow all safety codes. Wear safety glasses, protective
clothing,
and work gloves. Use quenching
cloth for brazing operations.
Have
fire
thoroughly
Options
Standard
maintenance,
damage.
Consult
a qualified
installer,
service agency, or your
distributor
or branch for information
or assistance. The qualified
installer or agency nmst use factory-authorized
kits or accessories
Control
insulation
is pliable
and completely
sur-
tube.
9. When necessary,
use hanger straps which
ram) wide and conform to shape of tubing
are 1 in. (25.4
insulation.
(See
Fig. 1.)
servicing
system,
main
in the OFF position and
more than 1 disconnect
a suitable warning label.
HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs, Use care and
wear appropriate protective clothing and gloves when
handling parts,
10. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.
NOTE:Avoid
contact
between
tubing
and structure
Install
UTDOOR
WAL ,NDOO
__
7 WALL
on a Solid, Level Mounting
If conditions or local codes require the unit be attached to pad, tie
bolts should
be used and fastened
through
knockouts
provided in unit base pan. Refer to unit mounting pattern in Fig. 3
L,QU,DTUBEdown
•
o
THROUGH
to determine
base pan size and knockout
For hurricane
tie downs,
(Professional
authorities.
THE WALL
J_r,,,,,,,,,_J 01ST
(AROUN_STRAP'_'_,N_poLA_B
contact
Engineer)
certification,
On rooftop applications,
unit above a load-bearing
E
h
d
MIN.
_l
I_
_
LIQUID TUBE
SUSPENSION
A94026
Fig. 1 - Piping
The outdoor
unit contains
Installation
system
refrigerant
charge
for operation
with AHRI rated indoor unit when connected by 15 ft. (4.57 m) of
field-supplied
or factory
accessory
tubing.
For proper
unit
operation,
check
located on control
this instruction.
IMPORTANT:
residential
governing
Roof
mounted
if
Maximum
liquid-line
including
Always
filter drier. If replacing
size is 3/8-in.
install
part number.
your distributor
or branch.
to winds
may require
wind
manufacturer
baffles.
Manual
Pumps
-+2° (-+3/8 in./ft,-+9.5
for
mm/m.)
specifications.
3/8-in.
(9.53 mm) Dia.
Tiedown Knockouts in
Basepan(2)
Places
OD for all
long line.
the factory-supplied
the filter drier, refer to Product
for appropriate
local
to adequately
support unit
to building.
Consult local
Guideline
and Service
Air Conditioners
and Heat
Unit must be level to within
per compressor
and PE
by
applications.
exposed
Consult
the Application
Residential
Split System
wind baffle construction.
NOTE:
for details
required
mount on level platform or frame. Place
wall and isolate unit and tubing set from
rooftop
units
refrigerant
charge using charging
information
box cover and/or in the Check Charge section of
applications
IMPORTANT:
codes
hole location.
local distributor
structure. Arrange supporting
members
and minimize transmission
of vibration
1" (25.4 mm)
Pad
Obtain
replacement
liquid-line
Data Digest
filter driers
from
INSTALLATION
View From Top
Check
Equipment
UNPACK
Move
unit.
and Job Site
UNIT
to final location.
Remove
carton taking
care not to damage
File claim with shipping company
is damaged or incomplete.
Locate
It contains
information
needed to properly
install
rating plate to be sure unit matches job specifications.
unit.
between
the coil surface
and louver
center of each side (See Fig. 2).
present and, if dislodged
during
before unit is placed into operation.
at the approximate
This louver spacer
shipment,
must be
should be
reinstalled
9-1/8 (231.8)
6-9/16 (166.7)
24-11/16 (627.1)
9-1/8
6-9/16
28-7/16
(231.8)
(166.7)
(722.3)
A05177
prior to installation
if shipment
unit rating plate on unit corner
This unit employs one louver spacer on each of the four sides to
prevent louver movement during operation.
The louver spacers are
trapped
TIEDOWN KNOCKOUT LOCATIONS in. (mm)
A
B
C
(889 X 889)
Inspect Equipment
panel.
Check
UNIT BASE PAN
Dimension in. (mm)
31-1/2 X 31-1/2
(800 X 800)
35 X 35
Fig. 3 - Tiedown
Clearance
When
wiring,
Knockout
Locations
Requirements
installing,
refrigerant
allow sufficient
space for airflow
clearance,
piping, and service. Allow 24 in. (609.6 mm)
clearance
to service end of unit and 48 in. (1219.2 mm) (above
unit. For proper airflow, a 6-in. (152.4 mm) clearance on 1 side of
unit and 12-in.
(304.8
mm) on all remaining
sides must be
maintained.
Maintain
a distance of 24 in. (609.6 mm) between
units. Position so water, snow, or ice from roof or eaves cannot fall
directly on unit.
On rooftop applications,
roof surface.
Operating
Ambient
The minimum
outdoor
locate unit at least 6 in. (152.4
operating
ambient
in cooling
mm) above
mode is 55 °F
(12.78°C)
without
low ambient cooling enabled in the Infinity
Control, and the maximum
outdoor operating
ambient in cooling
mode is 125°F (51.67°C).
At line voltage of 208v (or below, and
outdoor ambient of 120°F (48.9°C)
(and above), the compressor
operates in low stage.
On Infinity communicating
systems, low
ambient cooling
(-17.78°C).
Al1380a
Fig. 2 - Louver
Spacer
Location
operation
is possible
at ambient
as low
as 0°F
Table
ACCESSORY
Compressor
Usage
REQUIRED FOR
LOW-AMBIENT
COOLING
APPLICATIONS
(Below 55°F/12.8°C)
REQUIRED FOR LONG LINE
APPLICATIONS*
No
Yes
Yes
Yes
Start Assist Kit
Crankcase
1 - Accessory
Heater
(Within 2 miles/3.22
(standard on some units)
Evaporator
Liquid-Line
Freeze Protection
Solenoid Valve
Low-Ambient
Control
Puron Refrigerant Balance Port HardShutOff TXV
(standard
No
on some units)
No
No
No
No
Standard with Infinity Control
No
No
Yes1"
Yest
Recommended
Yes1"
No
Standard with Infinity Control
Recommended
No
No
For tubing set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 35 ft. (10.7 m) vertical differential
Line Guideline--Air
Conditioners and Heat Pumps using Puron® Refrigerant.
1- Required on all indoor units. Standard on all new Puron refrigerant fan coils and furnace coils.
Make Piping
NOTE:
Connections
casing
If the indoor
width,
transition
PERSONAL
HAZARD
km)
No
Standard with Infinity Control
No
Support Feet
Winter Start Control
REQUIRED FOR SEA COAST
APPLICATIONS
(total equivalent
furnace
coil width
refer to the indoor
length), refer to the Long
is more than the furnace
coil Installation
Instructions
for
requirements.
INJURY AND ENVIRONMENTAL
Failure to follow this warning
or death.
could result in personal
injury
[]NIT
AND SAFETY
Failure to follow this warning
or equipment damage.
Relieve pressure
and recover all refrigerant before system
repair or final unit disposal.
Use all service ports and open
all flow-control
devices, including solenoid valves.
Federal regulations
to the atmosphere.
unit disposal.
OPERATION
HAZARD
could
result in personal
injury
Puron®
refrigerant systems operate at higher pressures than
standard R-22 systems.
Do not use R-22 service equipment
or components
on Puron® refrigerant equipment.
require that you do not vent refrigerant
Recover
during system repair or final
Refrigerant
Tubing
Connection
Outdoor
Connect vapor and liquid tubes to fittings on vapor and liquid
service valves (see Table 2.) Use refrigerant grade tubing.
Sweat Connection
[]NIT
Failure
damage
DAMAGE
HAZARD
to follow
this caution
or improper operation.
may
result
in
equipment
[]NIT
If ANY refrigerant
tubing is buried, provide a 6-in
ram) vertical rise at service valve. Refrigerant
tubing
up to 36-in (914.4 ram) may be buried without
special consideration.
Do not bury lines more than
(914.4
Outdoor
(152.4
lengths
further
36-in.
units may be connected
to indoor
section
recommended
up to 80 ft. (24.38 m).
See Product
Data for
acceptable alternate vapor diameters and associated capacity losses.
Guideline
diameters.
m), substantial
Following
the
and
Longline
applications
greater
than
36-in.
(914.4
If refrigerant tubes or indoor coil are exposed to atmosphere,
must be evacuated to 500 microns to eliminate contamination
Outdoor
Unit
Outdoor
to follow
damage
or improper
Use
they
and
in the system.
Unit
unit
Connected
contains
to
correct
Factory
system
Approved
refrigerant
Indoor
charge
for
operation
with factory approved
AHRI rated indoor unit when
connected by 15 ft. (4.57 m) of field-supplied
or factory-accessory
tubing, and factory supplied filter drier. Check refrigerant charge
for n_axinmm
efficiency.
this caution
may
result
in equipment
operation.
material
refrigeration
grade
tubing.
Service
valves
are closed
from
factory and ready for brazing. After wrapping
service valve with a
wet cloth, braze
sweat connections
using
industry
accepted
methods
and
materials.
Consult
local
code
requirements.
Refrigerant
tubing and indoor coil are now ready for leak testing.
This check should include all field and factory joints.
Table
2 - Refrigerant
will reduce these losses. Refer to Table 2 for field tubing
Refer to Table 1 for accessory requirements.
There are no buried-line
ram) allowed.
moisture
Failure
using accessory
grade tubing of correct
shown in Table 2 are
For tubing requirements
beyond
80 ft. (24.38
capacity
and performance
losses
can occur.
recommendations
in
the Residential
Piping
HAZARD
Service valves must be wrapped in a heat-sinking
such as a wet cloth while brazing.
ram).
tubing package or field-supplied
refrigerant
size and condition.
Rated tubing diameters
DAMAGE
Connections
and Vapor 1hbe
UNIT SIZE
724
124
736,136
748,148
760,160
LIQUID
Connection
&Max. Tube
Diameter
3/8
3/8
3/8
3/8
3/8
and Recommended
Diameters
Liquid
(In.)
RATED VAPOR*
Connection
Diameter
3/4
7/8
7/8
7/8
7/8
Tube
Diameter
3/4
7/8
7/8
1- 1/8
1- 1/8
Units are rated with 25 ft. (7.6 m) of lineset. See Product Data sheet for
performance data when using different size and length linesets.
Notes:
1. Do not apply capillary tube or fixed orifice indoor coils to these units.
2. For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m)
horizontal or 35 ft. (10.7 m) vertical differential 250 ft. (76.2 m) Total
Equivalent Length), refer to the Residential Piping and Longline Guide
line- Air Conditioners and Heat Pumps using Puron refrigerant.
3.For
alternate
liquid
line
options
on18-42
size
units
see
Product
Data
or
Residential
Piping
and
Application
Guideline
Deep
Install Liquid-Line
The deep vacuum method
requires a vacuum
pump capable of
pulling a vacuum of 500 nficrons and a vacuum gage capable of
accurately measuring this vacuum depth. The deep vacuum method
Filter Drier Indoor
Vacuum
Method
is the most positive way of assuring a system is free of air and
liquid water. A tight dry system will hold a vacuum
of 1000
[]NIT DAMAGE HAZARD
nficrons
after approximately
7 nfinutes.
See Fig. 5.
Failure to follow this caution may result m equipment
damage or improper operation.
1. Installation of filter drier in liquid line is required.
2. Filter drier nmst be wrapped in a heat-sinking
such as a wet cloth while brazing.
material
Refer to Fig. 4 and install filter drier as follows:
VACUUM TIGHT
TOO WET
1. Braze 5-in. liquid tube to the indoor coil.
2. Wrap filter drier with damp cloth.
TIGHT
DRY SYSTEM
3. Braze filter drier to above 5-in. (127 ram) liquid
Flow arrow must point towards indoor coil.
tube,
0
1
2
3
4
MINUTES
5
6
7
4. Connect and braze liquid refrigerant tube to the filter drier.
A95424
Fig. 5 - Deep Vacuum Graph
Final Tubing Check
IMPORTANT:
Check to be certain factory tubing on both indoor
and outdoor unit has not shifted during shipment. Ensure tubes are
not
rubbing
close
tubes
against
each
other
attention to feeder tubes,
are secure and tight.
or any sheet
metal
or wires.
making
wire
ties on feeder
sure
Pay
Make Electrical
Connections
Be sure field wiring
and electrical codes,
complies with local and national fire, safety,
and voltage to system is within linfits shown
on unit rating plate. Contact local power company for correction of
improper
voltage. See unit rating plate for recommended
circuit
protection
device.
A05178
Fig. 4 - Liquid
Evacuate Refrigerant
Line Filter
NOTE:
Drier
Operation
abuse and could
Tubing and Indoor Coil
install
unit in system
pernfissible
UNIT
DAMAGE
HAZARD
may result in equipment
Refrigerant
tubes and indoor coil should be evacuated
using the
recommended
deep vacuum method of 500 nficrons. The alternate
triple
evacuation
procedure
nitrogen.
method
in service
may
manual).
be
used
Always
(see
break
triple
a vacuum
where
voltage
line voltage
See unit rating
may fluctuate
NOTE:
Use copper wire only between
NOTE:
Install branch
circuit
unit starting
current.
and readily
Route
Never use the system compressor as a vacuum pump.
improper
constitutes
plate. Do not
above
or below
switch
and unit.
linfits.
to handle
Failure to follow this caution
damage or improper operation,
of unit on
affect unit reliability.
accessible
Ground
Remove
access
from disconnect
control box.
and
disconnect
disconnect
of adequate
Locate disconnect
from unit, per Section
Power
size per NEC
within
440-14
sight from
of NEC.
Wires
panel to gain access to unit wiring.
through power wiring hole provided
Extend wires
and into unit
evacuation
with dry
ELECTRICAL
SHOCK
Failure
death.
this warning
to follow
HAZARD
could
result in personal
iniury or
The unit cabinet
must have an uninterrupted
or unbroken
ground to nfininfize personal injury if an electrical fault should
occur. The ground
may consist
of electrical wire or metal
conduit when installed in accordance
with existing electrical
codes.
Connect
Ground
and Power
Wires
Connect ground wire to ground connection in control box for
safety. Connect power wiring to contactor as shown in Fig. 6.
DISCONNECT
PER N. E. C. AND/OR
LOCAL CODES
CONTACTOR
FIELD
POWER
]
WIRING
FIELD
GROUND
WIRING
GROUND
LUG
J
A91056
Fig. 6 - Line
Connect
Control
Connections
Wiring
This unit is capable of communication with an Infinity Control, or
will operate using standard 24v 2-stage thermostat. Route 24-v
control wires through control wiring grommet and connect leads to
control board.
When an Infinity User Interface is available,
connect to A and B connections only. If additional grounding is
needed, use C terminal. If a 2-stage thermostat is used, connect to
the R, C, Y1, and Y2 connections. Refer to the wiring label to
further clarification.
Use No. 18 AWG color-coded, insulated (35 °C minimum) wire. If
thermostat is located more than 100 ft. (30.48 m) from unit, as
measured along the control voltage wires, use No. 16 AWG
color-coded wire to avoid excessive voltage drop.
All wiring must be NEC Class 1 and must be separated from
incoming power leads.
Use furnace transformer, fan coil transformer,
transformer for control power, 24v/40va minimum.
or accessory
NOTE:
Use of available 24v accessories may exceed the
minimum 40va power requirement. Determine total transformer
loading and increase the transformer capacity or split the load with
an accessory transformer as required.
Final
Wiring
Check
IMPORTANT: Check factory wiring and field wire connections
to ensure terminations are secured properly. Check wire routing to
ensure wires are not in contact with tubing, sheet metal, etc.
Compressor
Crankcase
Heater
When equipped with a crankcase heater, furnish power to heater a
minimum of 24 hr before starting unit. To furnish power to heater
only, set thermostat to OFF and close electrical disconnect to
outdoor unit.
A crankcase heater is required if refrigerant tubing is longer than
80 ft. (24.38 m). Refer to the Application Guideline and Service
Manual
Longline
Section-Residential
Split-System
Air
Conditioners and Heat Pumps.
Setup for Infinity
Fan Coil (communicating)
Airflow
Control
Furnace
or FE
When using an Infinity User Interface, airflow is automatically
selected based on equipment size. See User Interface Installation
Instructions and air conditioner Product Data for available
adjustments.
Airflow Selections
nicating)
(ECM
Furnaces
- non commu-
The ECM Furnaces provide blower operation to match the
capacities of the compressor during high and low stage cooling
operation. Tap selections on the furnace control board enable the
installing technician to select the proper airflows for each stage of
cooling. Below is a brief summary of the furnace airflow
configurations
1. The Y2 call for high stage cooling energizes the "Cool" tap
on the control board. The grey wire from cool tap is connected to tap 5 on the motor. Refer to the furnace Product Data
to find the corresponding airflow. If the airflow setting for
high cooling needs to be switched from tap 5 to a different
tap, jumper a connection from the cool tap to the desired tap
so that the Y2 signal is communicated via the cool tap to the
desired speed tap.
2. The Y1 call for low stage cooling energizes the "Fan" tap
on the control board. The red wire from the fan tap is connected to tap 1 on the motor. Refer to the furnace Product
Data to find the corresponding airflow. If the airflow setting
for low cooling needs to be switched from tap 1 to a different tap, jumper a connection from the Fan tap to the desired
tap so that the Y1 signal is communicated via the Fan tap to
the desired speed tap. The Y1 setting will also govern the
continuous fan airflow for the furnace.
Refer to the literature for the furnace and air conditioner Product
Data for further details,
Airflow Selection for Variable
(non-communicating)
Speed
Furnaces
The variable speed furnaces provide blower operation to match the
capacities of the compressor during high and low stage cooling
operation. The furnace control board allows the installing
technician to select the proper airflows for each stage of cooling.
Below is a summary of required adjustments. See furnace
installation instructions for more details:
1. The A/C DIP switch setting determines airflow during high
stage cooling operation. Select the A/C DIP switch setting
corresponding to the available airflow shown in the furnace
Installation Instructions that most closely matches the required airflow shown in the air conditioning Product Data
for HIGH speed.
2. The CF DIP switch setting determines airflow during low
stage cooling operation. Select the CF DIP switch setting
corresponding to the available airflow shown in the furnace
installation instructions that most closely matches the required airflow shown in the air conditioning Product Data
for LOW speed. If a higher or lower continuous fan speed is
desired, the continuous fan speed can be changed using the
fan switch on the thermostat. Refer to the furnace Installation Instructions for details of how to use this feature.
Airflow
Selection
for FV4C Fan Coils
(non-com-
municating)
The FV4 provides high- and low-stage blower operation to match
the capacities of the compressor at high- and low-stage.
To select recommended airflow, refer to the FV4C Installation
Instructions. The FV4C utilizes an Easy Select control board that
allows the installing technician to select proper airflows. This fan
coil has an adjustable blower-off delay factory set at 90 sec. for
high- and low-stage blower operation.
When using a communicating control with the fan coil or the
furnace, dip-switch adjustments are not necessary. The outdoor
unit configuration and the indoor airflows are determined by
communicating control setup.
Utility
Start-Up
Interface
The utility
connections
[]NIT
OPERATION
AND SAFETY
Failure to follow this caution
equipment damage or improper
• Do not overcharge
• Do not operate
• Compressor
in personal
Compressor
dome temperatures
or at negative
Control
should
board
be wired between R and Y2
for Infinity
Communicating
the utility sends a signal to shut the system
Interface will display, "Curtailment
Active".
injury,
system with refrigerant.
unit in a vacuum
Infinity
Systems only (see Fig. 7). This input allows a power utility device
to interrupt compressor
operation during peak load periods. When
HAZARD
may result
operation.
with
curtailment
relay
on the control
down,
the User
Operation
The basic scroll design has been modified with the addition of an
internal unloading mechanism
that opens a by-pass port in the first
pressure.
may be hot.
compression
scroll.
pocket,
effectively
reducing
the displacement
of the
The opening and closing of the by-pass
port is controlled
by an
internal electrically operated solenoid. The modulated scroll uses a
PERSONAL
Failure
INJURY
to follow
this caution
may result in personal
Wear safety glasses, protective
handling refrigerant and observe
• Front seating
single step of unloading to go from full capacity to approximately
67% capacity. A single speed, high efficiency motor continues to
run while the scroll modulates between the two capacity steps.
HAZARD
service
valves
injury.
clothing,
and gloves
the following:
are equipped
when
Modulation
is achieved by venting a portion of the gas in the first
suction pocket back to the low side of the compressor,
thereby
with Schrader
reducing
the effective
displacement
of the compressor.
capacity is achieved by blocking these vents, thus increasing
displacement
to 100%.
valves.
SYSTEM
FUNCTIONS
OF OPERATION
The 24ANB7
Communicating
/
AND
24ANB1
models
User Interface
or
SEQUENCE
utilize
either
an
a 2-stage
cooling
A DC solenoid
in the compressor
controlled
by a rectified
Full
the
24 volt
AC signal in the external solenoid plug moves the slider ring that
covers and uncovers these vents. The vent covers are arranged in
such a manner that the compressor
operates at approximately
67%
Infinity
indoor
thermostat.
With a call for first stage cooling, the outdoor fan and
low-stage
compressor
are energized.
If low-stage
cannot satisfy
capacity when the solenoid is not energized
and 100% capacity
when the solenoid is energized. The loading and unloading
of the
cooling demand,
indoor thermostat.
two step scroll is done "on the fly" without
between steps.
high-stage
is energized
by the second stage of
After second stage is satisfied, the unit returns to
low-stage operation
is required again.
When
both
until first stage is satisfied
stage
NOTE:
75%
first stage
and second
stage
will
off.
a 2-stage
compressor
or until second
shut
When
cooling
are satisfied,
unit
the
is operating
low-stage,
system vapor (suction) pressure will be higher
standard single-stage
system or high-stage
operation.
at
than
a
When the outdoor
ambient is more than 100°F
(37.8°C),
the
outdoor fan will continue to run for one nfinute after compressor
shuts off. this reduces pressure differential for easier starting in the
always
Communication
For Infinity
and Status
Function
Lights
when the thermostat
Crankcase
LED
(COMM
off and the ambient
The
products. The green LED will remain OFF until communications
is
established.
Once a valid command is received, the green LED will
The
turn ON continuously.
If no communication
nfinutes,
the LED will be turned
OFF
communication.
Status
is received within 2
until the next valid
control
is calling
Light
Only
board
one code
will
(the most recent,
be displayed
with the highest
on the outdoor
priority).
to approximately
The
compressor
for five
for high-stage
will
seconds
even
capacity.
Operation
is less than 42°F
(5.55°C).
(18.33°C)
30 nfinutes
Fan Motor
When
outdoor
compressor
unit control
is operating
outdoor
fan
unit
is
is
the ambient
and 42°F (5.55°C)
the
after the compressor
is
the
is
Operation
energizes
the outdoor
except for low-ambient
remains
energized
fan any time the
cooling
operation.
if a pressure
switch
or
compressor
overload
should
open.
Outdoor
fan motor
will
continue to operate for one nfinute after the compressor
shuts off
when
the
outdoor
ambient
is greater
(37.78 ° C) to allow for easier starting
An amber colored STATUS light is used to display the operation
mode and fault codes as specified in the troubleshooting
section.
See Table 6 for codes and definitions.
NOTE:
coil.
and stay unloaded
Heater
Outdoor
Light)
LED (COMM
light) on the outdoor
successful
communication
with
translates
The crankcase
heater is de-energized
when the compressor
running.
The crankcase heater is energized when the compressor
board (see Fig. 7)
the other
system
Amber
start unloaded
capacity
at the indoor
off the motor
turned off.
When the ambient is above 65°F (18.33°C),
crankcase
heater remains
de-energized
after the compressor
turned off.
Control Only, Green communications
(COMM)Light
A green
indicates
compressor
capacity
temperature
is between
65°F
crankcase
heater is energized
next cycle.
Green
67%
cooling
shutting
than
during
or equal
to 100°F
next cooling
cycle.
On 24ANB7 models - The outdoor fan motor is a PSC type. A fan
relay on the control board turns the fan off and on by opening and
closing
a high voltage circuit to the motor.
speeds between low and high stage operation.
It does
not
change
On 24ANBI
models - The outdoor fan is an ECM type. The
motor control is continuously
powered
with high voltage.
The
motor speed is deternfined
by electrical pulses provided
by the
PWM outputs on the control board. The ECM motor RPM
to outdoor conditions
as described in Table 3. The PWM
can be measured between the PWMI and PWM2 terminals
circuit
board
with a volt meter set to DC volts.
adjusts
output
on the
Table 3 - Outdoor Fan Motor PWM
Outdoor Temp (DC volts, Tolerance +/- 2%)
MODEL
LOW-STAGE
(OAT_104°F/40°C)
HIGH -STAGE
(OAT_104°F/40°C)
24AN B124
9.57
10.88
Infinity
This
LOW- &
HIGH-STAGE
(OAT>104° F/40° C)
unit
is
capable
need to be replaced
11.90
Low Ambient
of
low
Cooling
ambient
cooling
Infinity
for Infinity
Control
controlled
provides
low ambient
an automatic
10.26
11.90
24AN B148
9.91
11.04
11.90
protection
algorithm
that eliminates
the need
freeze thermostat.
Low ambient cooling must
24AN B160
10.86
11.70
11.90
User Interface
For 24ANB1 models in low-ambient cooling, the PWM output for both
high- and low-stage equals the value for low-stage operation below 55°F
(12.8°C).
In low ambient cooling (below 55°F/12.78°C)
on 24ANB7
24ANBI
models, the control board cycles the fan off and on.
Infinity
--
and
--
momentarily
or heating operation
or user interface. To
short and release Forced
• Two minute
delay on return
time delay to return to standby
valid communication
• One minute
re-cycle
mode when outdoor
ambient
(37.78°C).
• There is no delay between
high to low capacity.
to cycle until about 40°F
on
coil
mode operates
and
outdoor
air
as follows:
coil temp is less than outdoor
to stabilize.)
Fan is ON when outdoor
coil temp is more than outdoor
30 minutes.
(Fan
system to stabilize.)
Low pressure
switch is ignored
is
turned
on
to
for first 3 minutes
allow
during
low ambient start up. After 3 minutes, if LPS trips, then
outdoor fan motor is turned off for 10 minutes with the
from last
than or equal to 100°F
from low to high and from
remainder of the cooling cycle. If the LPS does not close
within 10 minutes, then the normal LPS trip response
fan at termination
The compressor
high and from high to low capacity
demand.
--
only).
is greater
staging
low ambient
based
compressor
running. If LPS closes within 10 minutes,
then cooling continues with the outdoor fan cycling per
the coil temperature
routine
listed
above
for the
(with Infinity
time delay of outdoor
cycle
Fan is OFF when outdoor
OFF for
refrigerant
from a
operation
will
coil freeze
for an evaporator
be enabled in the
air temperature
(+ 25°F / 13.89°C) or outdoor coil temp
is more than 80°F (26.67°C)
or if outdoor fan has been
pins.
• Five minute compressor
brown-out
condition.
Fan
controlled
system
bypass this feature,
0°F
air temperature
(+3°F / 1.67°C) or outdoor fan has been
ON for 30 minutes. (Fan is turned off to allow refrigerant
include:
• Five minute time delay to start cooling
when there is a call from the thermostat
Defrost
set up. Fan may not begin
(4.4°C)
OAT.
temperature.
Time Delays
The unit time delays
to
operation.
evaporator
9.06
NOTE:
down
(-17.78°C)
without a kit - ONLY when using Infinity control. A
low ambient kit is not required, and the outdoor fan motor does not
The
24AN B166
Controlled
will change
of cooling
(shut
from low to
down
cooling
operation
"on the fly" to meet the
--
The PWM output
generate
for both high and low-stage
value for low-stage
Iv2
l iqald llnu
A12260
Fig. 7 - 2-Stage
and
LPS
trip
equals
the
error) will occur.
operation,
below 55°F
(12.8°C).
0
SolcnoM
A12261
Control
Board
Check
Final Checks
Charge
Models 24ANB7
/ 24ANB1
should be charged in high stage
compressor
operation.
Factory
charge
amount
and desired
subcooling
are shown on unit rating plate. Charging
method is
shown on information
plate inside unit. To properly check or adjust
charge, conditions
must be favorable
for subcooling
charging.
Favorable
conditions
exist
when
the
outdoor
temperature
between 70°F and 100°F (21.11°C and 37.78°C),
temperature
is between
70°F and 80°F (21.11°C
Follow the procedure below:
Unit is factory charged
by adding or removing
is
and the indoor
and 26.67°C).
for 15ft (4.57 m) of lineset. Adjust charge
0.6 oz/ft of 3/8 liquid line above or below
For standard refrigerant line lengths (80 ft/24.38 m or less), allow
system to operate in cooling mode at least 15 minutes. If conditions
are favorable,
check system charge by subcooling
method. If any
adjustment
is necessary, adjust charge slowly and allow system to
for 15 minutes
system.
to stabilize
before
declaring
a properly
(26.67°C)
before attempting
method as described above.
to check
system
charge
If the indoor temperature
is below 70°F (21.11°C),
or the outdoor
temperature
is not in the favorable range, adjust charge for line set
length above or below 15ft (4.57 m) only. Charge level should then
be appropriate
for the system to achieve rated capacity. The charge
level could then be checked at another time when the both indoor
and outdoor
temperatures
are in a more favorable
NOTE:
If line length
is beyond
ft (6.10
m)
separation,
vertical
special charging
job, be sure to do the following:
2. Ensure
adding
covers.
that all wiring and tubing is secure
panels and covers. Securely
fasten
3. Tighten
service
valve
stem caps
in unit before
all panels and
to 1/12-turn
past finger
4. Leave Owner's
tion and
manual.
Manual
periodic
5. Fill out Dealer
file.
CARE
with owner.
maintenance
Installation
AND
Explain
system
requirements
Checklist
and
opera-
outlined
in
place in customer
MAINTENANCE
For continuing
high
performance
and to minimize
possible
equipment
failure, periodic maintenance
must be performed on this
equipment.
If the indoor
temperature
is above 80°F (26.67°C),
and the
outdoor temperature
is in the favorable range, adjust system charge
by weight based on line length and allow the indoor temperature
to
drop to 80°F
by subcooling
Before leaving
1. Ensure that all wiring is routed away from tubing and sheet
metal edges to prevent rub-through
or wire pinching.
tight.
15ft (4.57 m) respectively.
operate
charged
IMPORTANT:
requirements.
range.
80 ft (24.38 m) or greater than 20
See Long
Line
Guideline
for
Frequency
areas, such
information.
of maintenance
as
coastal
may vary depending
applications.
See
upon
Owner's
geographic
Manual
for
Pressure
TROUBLESHOOTING
If the compressor
fails to operate
with a cooling
used to verify if there is any damage
causing system malfunction.
call, Table 4 can be
to the compressor
windings
Switch Protection
The outdoor unit is equipped with high and low pressure switches.
If the control senses the opening of a high or low pressure switch,
it will respond as follows:
1. De-energize
Table 4 - Winding
Resistance
Winding resistance at 70°F +/- 20°F
(21.11°C +/- 11.11°C)
24ANB724
24ANB736
24ANB748
24ANB760
/
/
/
/
24ANB124
24ANB136
24ANB148
24ANB160
Winding
Start
(s-c)
Run
(R-C)
Systems
1.64
1.52
1.86
1.63
1.30
0.88
0.52
0.39
Communication
3. Display
24ANB724
24ANB736
24ANB748
24ANB760
Hk70EZ040
Hk70EZ042
Hk70EZ044
Hk70EZ046
24ANB124
24ANB136
24ANB148
24ANB160
Hk70EZ009
Hk70EZ011
Hk70EZ013
Hk70EZ015
The model
control.
Plug
An RCD
information.
at the factory
NOTE:
The
information
initial
power
model
plug
temporarily.
model
input
plug
at the factory.
5.1
5.1
5.1
5.1
up, the unit will
installed,
and
the unit operation
8. In the event of a low pressure
lockout,
Control
check the refrigerant
switch
charge
trip or low pressure
and indoor
airflow.
Fault
unit
control
board
has failed,
the control
fault code. (See Table 6) The control
will flash
board
should
n_ininmm
of 190v. The control
will flash the appropriate
fault code
(see Table 6)
230
V Brown
Out
Protection
The
brownout
feature
Defeated:
the type and size of unit to the
board
error code will
to the replacement
priority
over
If the model
operate
flash
cycles,
If the line voltage is less than 187v for at least 4 seconds, the
appropriate
compressor
contactor
and fan relay are de-energized.
Compressor
and fan operation
are not allowed until voltage is a
91
150
220
360
and the appropriate
takes
the
Brown Out Protection
replacement
board
contains
no model
and serial
If the factory control board fails, the model plug must
be transferred from the original
the unit to operate.
delay,
7. In the event of a high pressure switch trip or high pressure
lockout, check the refrigerant charge outdoor fan operation
and outdoor coil for airflow restrictions.
the appropriate
be replaced.
On new units, the model and serial numbers
are input into the
board's memory at the factory. If a model plug is lost or missing at
initial
installation,
the unit will
operate
according
to the
information
input
flash temporarily.
after a 15 minute
6. If LPS or HPS trips 3 consecutive
is locked out for 4 hours.
If the outdoor
(k - Ohms)
Pin 1 - 4
Pin 2- 3
18
75
18
120
18
180
18
270
plug is used to identify
has not closed
for cooling.
Pin Resistance
Model Plug
Number
fault code (see Table 6).
outdoor fan is turned off. If the open switch closes anytime
after the 15 minute delay, then resume operation with a call
Plug
Model
Number
contactor,
for 15 minutes,
tor is energized.
Failure
5 - Model
the appropriate
5. If LPS or HPS
Each control board contains a model plug. The correct model plug
must be installed for or the system to operate properly (see Table
5).
Table
compressor
fan operating
4. After a 15 minute delay, if there is still a call for cooling and
the LPS or HPS is reset, the appropriate
compressor
contac-
If communication with the Infinity Control is lost with the user
interface, the control will flash the appropriate fault code, (See
Table 6) Check the wiring to the User Interface, indoor and
outdoor units,
Model
the appropriate
2. Keep the outdoor
factory
plug is removed
according
the
board
for
model
after
to the last valid
appropriate
fault
code
can be defeated
if needed
for severe
noisy
power conditions.
This defeat should always be a last resort to
solving the problem.
Defeat is available
on the User Interface
setup screen (available
with SYSTXBBUID01-C
UI) or can be
initiated through the forced defrost pins for non-communicating
systems as follows:
The brownout
toggle is accomplished
by shorting the defrost pins
from power up with the OAT and OCT sensor connector removed.
After 3 seconds,
the status of the force defrost
short and the
OAT/OCT
as open
will be checked.
If correct,
will be toggled.
• Status code 6 shows
the brownout
is disabled.
• Status code 5 shows
the brownout
is active.
then the brownout
After the brownout
defeat is set, power down and reinstall the
OAT/OCT
sensor and remove the short from the forced defrost
pins. As long as the short on the forced defrost remains, the OAT
and OCT faults will not be cleared. The code will continue
to be
flashed.
The
control
is shipped
with
the brownout
active.
The
change
in
status is remembered
until toggled to a new status.
A power
down/power
up sequence will not reset the status.
It may be
necessary to do the toggle twice to cycle to the desired state of the
defeat.
230V Line (Power
Disconnect)
Detection
If there is no 230v at the compressor
contactor(s)
when the indoor
unit is powered and cooling demand exists, the @propriate
error
code is displayed
and 230v wiring
(see Table 6). Verify that the disconnect
is connected
to the unit.
is closed
Compressor
Voltage
Unloader
Sensing
Test Procedure
The control board input terminals labeled VS and L2 (see Fig. 7)
are used to detect compressor voltage status, and alert the user of
potential
problems.
The control continuously
monitors
the high
The unloader is the compressor
internal mechanism,
controlled
by
the DC solenoid, that modulates between high and low stage. If it
is suspected
that the unloader
is not working,
the following
voltage on the run capacitor of the compressor motor. Voltage
should be present any time the compressor contactor is energized,
methods
and voltage
de-energized.
should
Contactor
Shorted
If there is compressor
compressor
operation,
a wiring
not
when
the
will flash the appropriate
The control
Status
for 15 minutes,
LED will
voltage
after start-up,
flash the appropriate
If the thermal
closes,
to operate
3. If the correct
plug, measure
the
code shown
infinite
MAJOR
2-Stage
or is grounded,
The 2-stage
control
board
--
Outdoor
--
Low ambient
--
Compressor
--
Pressure
--
Time delays
fault code is displayed.
No 230V at Compressor
If the compressor
voltage is not sensed when the compressor
should be starting, the appropriate
contactor may be stuck open or
there is a wiring error. The control will flash the appropriate
fault
Field
box wiring.
Troubleshooting
units for proper switching
between low & high stages
NOTE:
The
liquid
operation
pressures
so liquid
are very
pressure
similar
should
the compressor
must be replaced.
controls
the following
functions:
high and low stage operation
fan motor
operation
cooling
external
switch
protection
monitoring
low
and
2-Stage
for
The
troubleshooting.
Compressor
current should increase 20 to 45% when switching
from low to high stage. The compressor
solenoid when energized
in high stage, should measure 24vac across pin numbers PL5-2 HI
and PL5-5 C. When the compressor
is operating in low stage, the
24v DC compressor
solenoid
coil is de-energized.
When the
compressor
is operating in high stage, the 24v DC solenoid coil is
energized.
The solenoid plug harness that is connected
to the compressor
has
an internal rectifier that converts the 24v AC signal to 24v DC.
DO NOT INSTALL
A PLUG
WITHOUT
AN INTERNAL
RECTIFIER.
the C, YI, and Y2 connections
system, the
system inputs
located at the bottom
control board (see Fig. 7). The OD units can be controlled
standard 2-stage thermostat or Infinity User Interface.
not be used
between
the
330 or 1640 ohms deIf the coil resistance is
On models with non-communicating
(non-Infinity)
2-stage
control receives 24vac low-voltage
control
through
stage
remove
Connections
Check the suction pressures at the service valves. Suction pressure
should be reduced by 3-10% when switching
from low to high
capacity.
high
results,
and, with the unit run-
Control
locked
and control
at
COMPONENTS
Compressor
the contactor
amperage.
plus intervals
DC voltage is at the control circuit molded
the compressor
unloader coil resistance. The
--
code. Check
the compressor
resistance should be approximately
pending on unloader
coil supplier.
in
(at the next 15 minute
plug from
interval check),
the unit will resume operation.
If the thermal
cutout trips for three consecutive
cycles, then unit operation
is
out for 4 hours and the appropriate
compressor
ning and the UI (or Thermostat)
calling for high stage, test
the voltage output at the plug with a DC voltmeter.
The
reading should be 24 volts DC.
and is
with a call for low or high stage cooling,
is energized. If the thermal protector has
protector
measure
2. If step one does not give the expected
cooling demand
de-energizes
the
but continues
and
on and off at 30 second
the UI (from low to high stage and back to low stage). Wait
5 seconds after staging to high before taking a reading. The
compressor
amperage should go up or down at least 20 percent.
fault code.
the outdoor fan is turned off. If the call for cooling
the control will energize the compressor
contactor every
15 minutes.
the system
Cycle the unloader
Cutout
the compressor
Table 6. After 15 minutes,
the compressor
contactor
not reset,
continues,
is
solenoid
then absent for 10 consecutive
seconds
while
exists, the thermal protector is open. The control
compressor
contactor
outdoor fan.
contactor
voltage sensed when there is no demand for
the contactor may be stuck closed or there is
Thermal
If the control senses
present
Detection
error. The control
Compressor
be
may be used to verify operation.
1. Operate
Compressor
2-stage
2-pole
winding
compressor
(3500 RPM)
resistance.
Compressor
The compressor
which
relieves
contains
operation.
Internal
motor
Refer
Compressor
contactor
controls
10
Control
the operation
that provide
4 for
correct
Relief
is protected
discharge
has
windings
to Table
by an internal pressure
gas
into
compressor
differential
between suction and discharge
625 psig The compressor is also protected
attached to motor windings.
The
of the
using a
relief
shell
(IPR)
when
pressures exceeds 550 by an internal overload
Contactor
a 24 volt
coil.
The
of the appropriate
electronic
contactor.
control
board
TEMPERATURE
Thermistors
temperature
THERMISTORS
are electronic devices which sense temperature. As the
increases,
the resistance
decreases.
Thermistors
are
used to sense outdoor ambient (OAT) and coil temperature (OCT).
Refer to Fig. 8 for resistance values versus temperature. If the
outdoor ambient or coil thermistor
should fail, the control will
flash the appropriate
Outdoor
factory
in the final locations.
mounted
are mounted
Thermistor
The control
properly
air thermistor
and coil
Check
Sensor
monitors
If the outdoor
air sensor
and compares
indicates
Default Operation
of failure
sensor
should
fail, low
ambient
cooling
will
OAT Thermistor
must be locked in place with spherical
facing towards" the front of the control box
Comparison
continuously
defaults have been provided
in the event
air thermistor and/or coil thermistor.
If the OCT
allowed.
are
thermistors
per Fig. 9 and Fig. 10.
temperature
sensor and outdoor coil temperature
proper operating conditions.
The comparison is:
--
thermistor
to insure
Thermistor
Factory
outdoor
the outdoor
sensor
10°F
Status
air
Table
to ensure
(5.56°C)
not be
nib end
Codes
6 shows
the status
codes
flashed
by the amber
status
light.
Most system problems can be diagnosed by reading the status code
as flashed by the amber status light on the control board.
warmer
The codes are flashed by a series of short and long flashes of the
status light. The short flashes indicate the first digit in the status
than the coil sensor (or) the outdoor air sensor indicates
20°F (11.11°C)
cooler than the coil sensor, the sensors
are out of range.
code, followed
error code.
--
If the sensors are out of range, the control will flash the
appropriate fault code as shown in Table 6.
--
The thermistor
comparison
is not performed
ambient cooling or defrost operation.
during
of
If the OAT sensor should fail, low ambient cooling will not be
allowed and the one minute outdoor fan-off delay will not occur.
fault code (see Table 60
IMPORTANT:
Failed
by long
flashes
indicating
the second
digit
of the
The short flash is 0.25 seconds ON and the long flash is 1.0 second
ON. Time between flashes is 0.25 seconds.
Time between short
low
flash
and first
repeating
long
flash
is 2.5 seconds
is 1.0
second.
Time
between
code
with LED OFF.
EXAMPLE:
3 short flashes followed
by 2 long
Table 6 shows this to be low pressure
THERMISTOR
90 ,
]
flashes indicates
switch open.
a 32 code.
CURVE
T
F
O
20
40
60
80
100
120
(-17.77)
(-6.67)
(4.44)
(15.56)
(26.67)
(37.78)
(48.89)
TEMPERATURE
"F ('C)
A08054
Fig. 8 - Resistance
OAT Thermistor
Values
Versus
Temperature
OCT Thermistor
must be
must be
tight on the liquid tube.
locked in place with spherical nib end facing towards
the front of the control box
J
fj
..............
J
A12263
Fig. 9 - Outdoor
Air Thermistor
Al1143
(OAT) Attachment
Fig. 10 - Outdoor
11
(;oil Thermistor
(OCT)
Attachment
Table
6 - Troubleshooting
AMBER LED
FLASH
CODE
OPERATION
FAULT
Standby - no call for unit operation
None
On solid, no
flash
Normal operation
Low Stage Cool/Heat
None
1, pause
Normal operation
Operation
POSSIBLE
CAUSE AND ACTION
High Stage Cool/Heat
Operation
None
2, pause
Normal operation
Brown out protection
is Disabled
None
5, pause
User made selection, see instructions
for more detail
Brown out protection
is Active
None
6, Pause
User made selection, see instructions
for more detail
System Communications Failure
16
Communication
with User Interface lost. Check wiring to User Interface,
indoor and outdoor units
Invalid Model Plug
25
High Pressure
Switch Open
31 *
High-pressure
switch trip. Check refrigerant
and coils for airflow restrictions.
32*
Low-pressure
switch or discharge temperature
charge and indoor air flow.
Control does not detect a model plug or detects an invalid model plug.
will not operate without correct model plug.
Unit
charge, outdoor fan operation
Low Pressure
Switch or Discharge Temp
Switch Open
Control
Fault
switch trip. Check refrigerant
45
Outdoor unit control board has failed.
Brown Out (230 v)
46
Line voltage < 187v for at least 4 seconds. Compressor
not allowed until voltage>_190v. Verify line voltage.
Control board needs to be replaced.
No 230v at Unit
47
There is no 230v at the contactor when indoor unit is powered and cooling/
heating demand exists. Verify the disconnect is closed and 230v wiring is
connected to the unit.
Outdoor Air Temp
Sensor Fault
53
Outdoor air sensor not reading or out of range. Ohm out sensor and check
wiring.
Outdoor Coil
Sensor Fault
55
Coil sensor not reading or out of range. Ohm out sensor and check wiring.
Thermistors out of
range
56
Improper relationship between coil sensor and outdoor
sensors and check wiring.
and fan operation
air sensor. Ohm out
Low Stage
Thermal Cutout
71 *
Compressor operation detected then disappears while low stage demand
exists. Possible causes are internal compressor overload trip or start relay
and capacitor held in circuit too long (if installed).
High Stage
Thermal Cutout
72*
Compressor operation detected then disappears while high stage demand
exists. Possible causes are internal compressor overload trip or start relay
and capacitor held in circuit too long (if installed).
Contactor
73
Compressor voltage sensed when no demand for compressor operation
exists. Contactor may be stuck closed or there is a wiring error.
No 230V at
Compressor
74
Compressor voltage not sensed when compressor should
tactor may be stuck open or there is a wiring error.
Low Stage
Thermal Lockout
81
Thermal cutout occurs in three consecutive low/high stage cycles.
stage locked out for 4 hours or until 24v power recycled.
Low
High Stage
Thermal Lockout
82
Thermal cutout occurs in three consecutive high/low stage cycles.
stage locked out for 4 hours or until 24v power recycled.
High
Low-Pressure
Lockout
83
Low pressure switch trip has occurred during 3 consecutive cycles.
operation locked out for 4 hours or until 24v power recycled.
Unit
High-Pressure
Lockout
84
High pressure switch trip has occurred during 3 consecutive cycles.
operation locked out for 4 hours or until 24v power recycled.
Sequence: Compressor
contactor is de-energized
delay, If fault is cleared, unit will resume operation,
defeats the 15 minute delay.
Shorted
be starting. Con-
Unit
and outdoor fan
energized for up to 15 minutes. If demand still exists, control will energize compressor
contactor after 15 minute
If fault still exists, fan shuts off, and error code continues to flash, Control will attempt re-start
every 15 minutes, Cycling low voltage
12
Vadable Speed
Fan Coil
Thermidistat
Two-Stage
Air Conditioner
Thermidistat
Varlabb Speed
2-Stage
Furnace
Air Conditioner
[]
RVS/Heat
.
Stage 2
Heat Stage I
Low
Compressor
High
-[5}
24VAC
Hot Heating
24VAC
Hot Cooling
1
*
___
_[_.
L4_HEAT
JUMPER
STAGING
FOR
....... 12_
p__
D
,_:_:_'-
--- [ _2_3
_"
Heat Siege I
F"w'Tw-_"
Coo[ stage I
E_-
coo[ Stage 2
_
Fan
_"
24VAC Hot Heating
i
i
MODES
___J
[--4_9---_
_
-{--_--I
•
_{_'_1
Dry Contact 1
_"
Dry Contact 2
_"
24VAC Common
i
......
-
,/'[_
24VAC Hot Cooling
', _---_-- _o_,_ovo.o_E_._F_o_
_
_-
2
24VAC Common
Heat Siege 2
_, REMOVE J2
_
Fan
Dry Contact
......
_"
Compressor
Dry Contact
__-_-,-
..]
[_-
Humidify
Humidify
Outdoor Air Temp
Remote Room Sensor
i'_o"_"
Outdoor Air Temp
-
RemoteRoom
Pi
:!_OutdoorS
OATfRRS Return
SRTN
.....
Instructions
-
L1
• Outdoor
Sensor"
I_/]
[_-
OAT/RRS Corn
_
R_n_nr
,
L ................................
See Humidifier
I'_'O'_'_[
Remote Room Sensor
_-
:
* See Humidifier Instructions for proper wiring
fur proper wiring.
A12438
Thermidistat Models T6-PRH01
w/VS Fan Coil & 2-Stage
Fig. 11 - Thermidistat
Wiring
THERMIDISTAT
-A & T6-NRH01
Air Conditioner
with 2-Stage
SINGLE-STAGE
A12437
-A
Puron
Thermidistat Model T6-PRH01
w/VS Furnace & 2-Stage
refrigerant
Air Conditioner
-A & T6-NRH01
Air Conditioner
-A
(set up as a non-communicating
system)
TWO-SPEED
FURNACE
AIR
CONDITIONER
N_A[2_
E2_
2_3
COOL STAGE 1
HEAT STAGE 1
TWO-STAGE
SINGLE-STAGE
THERMOSTAT
TWO-SPEED
FURNACE
AIR
CONDITIONER
COOL STAGE 2
FAN [_
[33
24 VAC HOT [_
DEHUMIDIFY
[_
E23-............
E23-............I-q
24 VAC COMM [_
HUM
HUMIDIFY
............
[_
F'_
EZ]
N/A [_
OUTDOOR
.............-rr---Kl
............
F[_
co%?°,%Qi3_
See Hum}drier Instructions for proper wrng
* See
Humidifier
Instructions
D
HUM*
for
proper
wwing.
A12439
Single Stage Furnace with 2-Stage
Fig. 12 - VS Furnace
At2440
2-Stage
Air Conditioner
or Fan Coil Wiring
User Interlace
with 2-Stage
AC
Fan Coil
=_1
i]
----H
A I_--
Thermostat with Single-Stage
2-Stage Air Conditioner
Furnace and
(set up as a non-communicating
Communicating
system)
ACiiHP
n
LEGEND
--
24v Factory
z_
-
24v Field Wiring
Field Splice
* See Humidifier Instructions for proper wiring
A12441
Fig. 13 - Infinity
Furnace
(See Thermostat
or Fan Coil with 2-Stage
Installation
Instruction
AC (set up as a communicating
for specific
13
unit combinations)
Wiring
system)
Connection
PURON®
(R-410A)
REFRIGERANT
QUICKREFERENCE
GUIDE
•Puron
refrigerant
operates
at50-70 percent higher pressures than R-22. Be sure that servicing equipment and
components
• Puron
are designed
refrigerant
• Recovery
• Puron
cylinders
cylinder
refrigerant
pressure
should
into suction
sets should
• Puron
refrigerant,
• Vacuum
pumps
rating must be 400 psig, DOT 4BA400
be charged
pressure
be designed
• POE oils absorb moisture
moisture
rapidly.
to certain plastics
liquid-line
unit is equipped
to 500 microns
Copyright
and roofing
materials.
on every unit.
TXV or piston metering
while it is under
for service,
recover
device, it must be changed
to a hard shutoff
Puron TXV.
a vacuum.
refrigerant,
evacuate
then break vacuum
with dry nitrogen
and replace filter driers.
into the atmosphere.
tube coils.
all warnings,
cautions,
and bold
text.
with a hard shutoff
Puron
TXV metering
device.
Ask For
2012 Carrier Corp. •
Manufacturer
than 72 hours.
oil to atmosphere.
filter drier is required
• All indoor coils must be installed
Always
less than 600 psig.
prior to recharging.
• Do not vent Puron refrigerant
• Observe
pressures
with wet cloth when brazing.
with an R-22
system must be opened
• Do not use capillary
with POE oils.
TXV.
• Never open system to atmosphere
Evacuate
retard.
from oil.
Do not expose
• Wrap all filter driers and service valves
• When
hose
filter drier in liquid line.
• POE oils may cause damage
• Do NOT use an R-22
device in the manifold
to detect HFC refrigerant.
line filter driers in line longer
• Do not install a suction-line
• If indoor
type metering
rating.
filter driers with rated working
• Do not leave Puron suction
approved
Use a commercial
operating
as with other HFCs, is only compatible
will not remove
• Do not use liquid-line
• A factory
with liquid refrigerant.
or DOT BW400.
be 700 psig high side and 180 psig low side with 550 psig low-side
should
replacement
refrigerant
line with compressor
• Use hoses with 700 psig service
• Leak detectors
with Puron
are rose colored.
service
systems
when charging
• Manifold
to operate
reserves
7310 W. Morris St. •
the right to change,
Indianapolis,
IN 46231
at any time, specification8
and design8
Edition
without
notice and without
14
Date:
09/12
obligations,
Catalog No: 24ANBT-1-3SI
Replaces:
24ANB7-1-2Sl
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