Hallowell Acadia i Series User manual

Hallowell International 110 Hildreth Street, Bangor, ME 04401
t:(207) 990.5 00 --- f:(207) 990.5 02 --- [email protected] --- www.gotohallowell.com
Last Revised 02.24.10
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CONTENTS
1
Page Number(s)
QUICK START CHECKLIST 3-4
SAFETY CONSIDERATIONS AND INSTALLATION RECOMMENDATIONS 5-6
INSTALLATION STEPS 7-18
Step 1 Receiving Equipment and Checking Job Site 7
Step 2 Installation on a Solid, Level Mounting Pad or Foundation Rack 7
Step 3 Clearance Requirements 8
(Figure 1) –Clearance Requirements 8
Step 4 Install Indoor Air Handler and Expansion Device 9
Step 5 Making Piping Connections 10
Step 6 Making Electrical Connections 12
Configuring the Heat Pump Components 14
Step 7 Charging of the System 14
Table 1: Hallowell Acadia Line Set Charging Chart 15
Step 8 Start-up and Programming the Acadia outdoor unit Controller 16
Step 9 Checking the Refrigerant Charge 17
Step 10 Final Checks 18
OPERATION MODES 19-22
(Figure 2) –Diagnostics Exploded View 19
Cool Mode 19
Table 2: Cool Modes and Y2Out: Y1/Y2 & O vs. Ambient 19
Heat Mode 19
Table 3: Heat Modes and Y2Out: BINs vs. Y1/Y2 with Electric Back Up 20
Table 4: Heat Modes and Y2Out: BINs vs. Y1/Y2 with Dual Fuel Back Up 20
Table 5: Outdoor Ambient Temperature BINs 20
Table 6: Heat Modes vs. Outputs Energized 20
Defrost Mode 21
Emergency Heat Mode 22
CONTROLLER DETAILS 23-27
(Figure 3) –Controller Layout 25
Table 7: System Status and Fault Codes 26
Table 8: LED Status Indicators 27
(Figure 4) –Control Operation Flow Chart 27
FAULT CONDITIONS 28-30
FIELD TEST MODE 31-32
(Figure 2) –Diagnostics Exploded View 31
EXTRAS 33
Zone Controls 33
Hydronic Coil for Supplemental Heat 33
TROUBLE SHOOTING GUIDE 34-36
Table 9: Pressure Safeties 34
Table 10: Temperature Sensor Resistances vs. Temperature 35
APPENDIX A –SETTINGS 37-42
(Figure 5) –Factory Supplied Air Handler Control Board 37

CONTENTS
2
Page Number(s)
Factory Supplied Air Handler TXV Kit Installation Instructions 37
Table 11: Cooling and Heat Pump Airflow Taps for the Factory Supplied Air Handler 38
Table 12: Electric Heat Airflow Taps for the Factory Supplied Air Handler 38
Table 13: Delay Comfort Settings 38
(Figure 6) –Controller Layout 39
(Figure 4) –Control Operation Flow Chart 40
Table 14: Thermostat Settings 41
APPENDIX B –WIRING DIAGRAMS 43-48
(Figure 8) –Line Voltage Wiring 43
(Figure 9) –Hallowell Controller Wiring 44
(Figure 10) –Factory Supplied Air Handler Control Board Wiring 45
(Figure 11) –Hallowell Matched Thermostat Wiring 45
(Figure 12) –Entire Low Voltage Wiring With Electric Back Up 46
(Figure 13) –Entire Low Voltage Wiring with Dual Fuel Back Up 47
(Figure 14) –Compressor Starting Components 48
APPENDIX C –ACADIA CHARGING R-410A 49-52
Table 15: Hallowell Acadia Sub-Cooling Chart (FAHRENHEIT) 49
Table 16: Hallowell Acadia Sub-Cooling Chart (CELSIUS) 49
Table 1: Hallowell Acadia Line Set Charging Chart 50
Table 17: FAHRENHEIT Pressure/Temperature Chart R-410A 51
Table 18: CELSIUS Pressure/Temperature Chart R-410A 52
APPENDIX D –OUTDOOR UNIT MOUNTING 53-54
(Figure 15) –Typical Acadia Mounting 53
(Figure 16) –Northern Climate Snow Stands 54
APPENDIX E –ACADIA COMPONENTS 55
(Figure 17) –Acadia Components 55
APPENDIX F –EWC ZONE CONTROL 56
(Figure 18) –Acadia with EWC Zone Control Wiring 56
APPENDIX G –SPECIFICATIONS SHEET 57-60
SPECS A Electrical and Physical Data 57
SPECS B Heating and Cooling Performance Data 58
SPECS C Physical Dimensions 59
SPECS D Configurations of Hallowell Matched Air Handler 60
INSTALLER TO HOME OWNER CHECKLIST 61
INSTALLATION DATA SHEET 62

QUICK START CHECKLIST
3
Please Check or fill out as Completed
PIPING CONNECTIONS
Both the vapor and liquid lines should be fully insulated
separately with at leas
The liquid line filter drier should be installed as close to
the indoor air handler as possible and insulated.
If a vertical riser of 10-ft. or more is present on the line
set, the line set MUST be properly trapped at the base
of the riser. Consult Hallowell International Technical
Support for more information.
When making brazed connections, purge nitrogen
through the piping (e.g. 2 PSI standing pressure) to
maintain clean braze joints and eliminate oxidation
formation. The Acadia outdoor unit comes charged
with 50 PSI of dry nitrogen that can be used for purging
by turning the service valves counter
clock-wise slightly from fully front-seated.
FACTORY SUPPLIED AIR HANDLER
No Duct Bypasses are allowed on the Acadia systems.
Consult Hallowell International Technical Support for
more information.
Install the indoor air handler; ensuring proper duct
distribution, duct insulation, and duct sealing.
Duct isolators should be used on both the supply and
return to eliminate vibration transmission into the
home.
A proper air filter should be installed on the return side
of the indoor air handler.
A condensate drain should be installed properly and
trapped, terminating in a proper drain.
Run a minimum of 10-conductor, 18 AWG control
wiring from the indoor air handler to the thermostat,
and from the indoor air handler to the Acadia outdoor
unit.
Connect the control wiring, following color codes
provided in this manual, (Fig. 6 through 9, Appendix B).
Disconnect the low-voltage leads from the transformer
in the indoor air handler from the air handler control
board spade terminals labeled 24VAC and COM.
The line-voltage leads to the transformer MUST remain
connected to power the ECM blower motor.
Connect 24VAC and 24C provided from Acadia outdoor
24VAC and COM on the
indoor air handler control board (Fig. 4, Appendix A).
An appropriately sized electrical disconnect should be
installed if the electric heat kit is not used, per NEC
and/or local codes.
The electrical service to the indoor air handler should
be sized adequate for both the air handler and the
electric heat kit, if one is installed, per NEC and/or local
codes.
If an electric heat kit is installed, the HEAT/NO HEAT
jumper on the indoor air handler control board should
be set to HEAT. Leaving this jumper on NO HEAT
disables all auxiliary heat relays.
Set the airflow jumpers in the indoor air handler in
accordance with (Fig. 4, Appendix A).
The AC/HP jumper on the indoor air handler control
board should be set to HP (Heat Pump).
All supply and return registers should be open and
unblocked.
THERMOSTAT
Install the thermostat in a location where it will not be
directly exposed to conditioned air or drafts from doors
and/or windows.
Insulate between the base plate of the thermostat and
the wall to prevent drafts in the wall cavity from
affecting the thermostat.
A jumper between RC and RH SHOULD BE installed on
the thermostat.
A jumper between W2 and W/E SHOULD NOT BE
installed at the thermostat.
Configure the thermostat, installer configuration menu,
as indicated in this manual, (Table 13, Appendix A).
ACADIA OUTDOOR UNIT
Proper clearances should be maintained around the
Acadia outdoor unit in accordance with (Appendix D),
making sure to provide adequate space for access to
the compressor compartment access panel (30-in. (76-
cm.) minimum).
The Acadia outdoor unit should be leveled within ±3
degrees.
The Acadia outdoor unit should be placed on adequate
snow stands, NOT blocks, sleepers, etc., per climate
region with a minimum of 12-in. (30.5-cm.) clearance
to the ground.
The outdoor coil drainage holes should not be
obstructed from the unit to the ground, providing full
drainage runoff during the defrost cycles.
Check the factory tubing and make sure no tube is
rubbing against another or any sheet metal. Pay close
attention to the distributor tubes on both the indoor
and outdoor coils.
The transformer should be wired appropriately for the
applied line voltage. Factory wiring is for 240VAC. For
correct wiring, see (Fig. 9, Appendix B).
A minimum 10-conductor, 18 AWG control harness
should be correctly wired between the thermostat,
indoor air handler, and Acadia outdoor unit, following
the color codes and schematics provided in (Fig. 6
through 9, Appendix B).
An electrical disconnect should be properly installed
and sized for the Acadia outdoor unit, per NEC and/or
local codes.

QUICK START CHECKLIST
4
All electrical connections should be weather tight.
All cabinet and electrical fasteners should be secure.
Shipping vibration can loosen these connections.
Make sure the control wiring does not chaff and a
grommet is installed.
PRESSURE TESTING AND LEAK CHECKING
Pressure test the line set to 400 PSI for a minimum of
15 minutes.
A bubble solution should be used as necessary. All
braze joints and TXV connections should be checked.
EVACUATION AND CHARGING OF SYSTEM
Both the vapor and liquid service valves should be open
and back-seated.
The entire system should be properly evacuated to at
least 500 microns. A triple evacuation is the preferred
method for a clean installation.
An R-410A INITIAL CHARGE should be weighed in as a
liquid 
compressor compartment.
The FINAL CHARGE (if required) is to be weighed in
through the 1/4" charging port on the outside of the
Acadia outdoor unit while the system is operating.
The vapor service valve is high pressure
gas during heating operation and low pressure gas
during cooling operation.
(NOTE) The charging port ALWAYS reads the low pressure side
of the system. The 3/8” service valve port ALWAYS reads the
high pressure side of the system.
Charging operations should always be performed in the
heating mode. If the system must be charged in the
cooling mode, a return trip is required to check the
charge during heating season.
Total charge amount is dependent on the total linear
length of the liquid line, excluding any allowance for 90
degree elbows; see (Table 1, Appendix C).
SYSTEM STARTUP AND CHECKOUT
The access covers to the indoor air handler should be in
place to establish proper air flow across the indoor coil
while the system is operating.
After applying power, ensure the applied voltage is
within specifications. If the voltage is outside of
specifications, contact the local utility company.
Verify the Controller is active and no error conditions
are present.
Set the Controller program in the outdoor unit; P0 for
electric back up, P1 for dual fuel back up.
Obtain an accurate measurement of the outdoor air
temperature at the Acadia outdoor unit.
Measure the liquid line temperature by attaching and
insulating an accurate thermistor type or thermocouple
type as close to the Acadia
outdoor unit as possible.
Place the system into a 2nd Stage Heating Call (24VAC to
the Y2 terminal at the Acadia outdoor unit). A 5 minute
anti-short cycle timer will run out before any
compressor operation is permitted by the Controller.
Operate the system for a minimum of 30 minutes
before adjusting the charge.
Measure the liquid service valve pressure by attaching
an accurate R-410A rated gauge to the 3/8service
valve port.
Refer to (Table 14, Appendix C) for the required sub-
cooling temperatures in the heating mode.
For every 1 lb of additional refrigerant added, allow
sufficient time for the system to settle before taking
another sub-cooling reading.
Fill in the service sticker on the electrical box cover
during installation.
IMPORTANT: Upon completion, be sure to do the following:
Ensure that all wiring and tubing is secure in the Acadia
outdoor unit before installing panels and/or covers.
Securely fasten all panels and/or covers and ensure all
fasteners will remain tight.
Tighten all access fitting caps to 1/12-turn past finger
tight.
Leave the nual with the owner and explain
the system operation and periodic maintenance
requirements outlined in the manual.
heck List with the new Acadia
owner.
Fill out the Dealer Installation Check List and place in a
customer file.
Fill out the Installation Data Sheet on the last page and
e-mail, fax, or mail it to Hallowell International (e-mail
address, fax #, and mailing address are available on the
front cover).

SAFETY CONSIDERATIONS AND INSTALLATION RECOMMENDATIONS
5
(DANGER) This Identifies serious hazards which will result in severe personal injury and/or death.
(CAUTION) This Identifies unsafe practices which would result in minor personal injury and/or product and property damage.
(NOTE) This is used to highlight suggestions which will result in enhanced installation, reliability, or operation.
IMPORTANT: This is used to designate points of interest to be considered before, during, and after installation.
SAFETY CONSIDERATIONS
(CAUTION) Improper adjustment, alteration, installation, service, maintenance, and/or use can cause explosion, fire, electrical
shock, and/or other conditions which may cause death, personal injury, and/or property damage.
Consult a qualified installer, service agency, or your distributor for more information, or assistance. The qualified installer or
agency must use factory-authorized kits or accessories when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing, and work gloves.
Use a quenching cloth for brazing operations to protect system components, i.e. service valves, etc.
Have a fire extinguisher available.
Read these instructions thoroughly and follow all cautions or warnings included in the provided literature and attached to the
Acadia outdoor unit. Consult local building codes and National Electrical Code (NEC) and/or local codes for special
requirements.
INSTALLATION RECOMMENDATIONS
Position the Acadia outdoor unit AWAY from decks, patios, windows, etc. where the operational sounds may disturb the
customer. Ensure the Acadia outdoor unit is not placed under or near eaves, roof drains, or under roof pitches where ice, rain,
or snow may drop, where icicles may form, or any other debris may fall on top of and/or damage the unit.
Ensure the liquid and vapor tube diameters are appropriate for the capacity of the system and both the liquid line and the vapor
line are insulated separate. The Acadia system utili
liquid line at lower ambient temperatures, so the tubing must be insulated properly. Additional insulation may be required. A

Run the refrigerant tubes as directly as possible by avoiding unnecessary turns and bends, keeping the tubes the shortest length
possible to reduce the refrigerant charge amount and increase efficiency.
When passing refrigerant tubes through a wall, seal the opening with a sealing material such as RTV or other pliable silicon-
based caulk around the refrigerant lines where they penetrate to reduce vibration and to retain flexibility.
Install the filter drier inside at the indoor air handler and it should be insulated. This minimizes thermal losses on the liquid line
and increases system efficiency.
Install an oil trap on the bottom of the vapor line, and one for every 10-ft. (3.04-m.) of vertical rise. Consult Hallowell
International Technical Support for more information.

SAFETY CONSIDERATIONS AND INSTALLATION RECOMMENDATIONS
6
Avoid direct copper tubing contact with duct work, floors and floor joists, walls and wall studs, water pipes, or other
construction materials such as brick and concrete block.
Do not suspend the refrigerant tubing from joists and/or studs with rigid wire, strap, or other hangers which may come in direct
contact with the tubing.
When necessary, use hanger straps which are large enough to fit around the tubing insulation and isolate the hanger straps
from the insulation by using metal sleeves bent to conform to the shape of the insulation.
If the line set is routed on the exterior of the home, be sure to add additional insulation to both the liquid and vapor lines to
minimize thermal losses from the line set. ncies. A maximum of 5 to 10

(NOTE) Exterior line sets may have high thermal losses that can reduce the system capacity and efficiency.
Ensure that the tubing insulation is pliable, sealed with tape or glue, and completely surrounds the Vapor and Liquid lines
separately.
Maximum recommended line set length is 50-ft. (15.24-m.); consult Hallowell International Technical Support if other.
Maximum recommended vertical rise of 10-ft. or (3.04-m.); consult Hallowell International Technical Support if other.
Mount the Acadia outdoor unit on a solid, level, foundation pad with a proper sub-base and proper drainage to ensure the unit
will not shift during its lifetime.
If the Acadia system is replacing an existing R-22 based heat pump or air conditioner, all piping must be replaced at the time of
the new installation. Mineral oil used in R-22 systems is incompatible with the POE oil used in R-410A systems like the Acadia.
Consult Hallowell International Technical Support with any questions.
IMPORTANT: The maximum liquid- O.D. for all applications. The 3/8liquid line must be insulated independently
from the vapor line insulation.
(CAUTION) USE ONLY R-410A RATED SERVICE EQUIPMENT.
(NOTE) Only install the factory-supplied heat pump (bi-flow) liquid line filter drier on the liquid line at the indoor air handler
unit. Installation of the filter drier inside is to help prevent heat loss during heating operation. The filter drier must be insulated.
Obtain replacement bi-directional R-410A rated filter driers from your local supply distributor.

7
INSTALLATION STEPS
Step 1 —Receiving Equipment and Checking Job Site
(CAUTION) The Acadia outdoor unit is heavy. Take the necessary precautions and use appropriate equipment to move and
install.
UNPACK THE ACADIA OUTDOOR UNIT
Move to the final location. Remove the carton, taking care not to damage the Acadia outdoor unit or indoor air handler unit.
INSPECT EQUIPMENT
Check over both the Acadia outdoor unit and the indoor air handler unit for any signs of shipping damage. If the shipment is
damaged or incomplete, file a claim with the shipping company as soon as possible.
Check the Acadia outdoor unit for nitrogen pressure using a pressure gauge. The Acadia outdoor unit should have a charge of 50 PSI
(+/- 10%) of dry nitrogen. If the nitrogen charge is low or there is a lack of nitrogen pressure, DO NOT install the Acadia outdoor
unit; contact Hallowell International Technical Support. Consult the AHU manual for pressure for the indoor coil.
Step 2 —Install on a Solid, Level Mounting Pad or Foundation Rack
Mount the Acadia outdoor unit on a solid, level, foundation pad with a proper sub-base and proper drainage to ensure the unit will
not shift during its lifetime.
(NOTE) See (Fig. 10, Appendix D) for appropriate mounting configurations of the Acadia outdoor unit.
ELEVATE THE ACADIA OUTDOOR UNIT
(CAUTION) Do not block the drainage holes under the outdoor coil. Ice buildup will damage the coil. Concrete, wood, or any
other blocking SHOULD NOT BE USED to elevate the unit.
(NOTE) Accumulation of water and ice in the base pan may cause equipment damage. Elevate the unit per local climate and
code requirements to provide clearance above the estimated snowfall levels and ensure adequate drainage of the unit. Use only
Hallowell Approved snow stands in areas where prolonged freezing temperatures are encountered. Ensure that the outdoor coil
drainage holes are not obstructed by the snow stand. Ensure the mounting pad will not shift or swell from seasonal frost heaves.
The Acadia outdoor unit must be mounted on Hallowell Approved snow stands to allow water to drain during a defrost cycle
and so ice build-up will not interfere with the unit operation. The snow legs should be mounted on the support rails of the
system and not on the base pan; this allows the water to drain out of the unit during defrost and will not cause flex and
distortion to the cabinet. The base pan is not designed to support the weight of the system.
The Acadia outdoor unit must be placed on a secure and level mounting pad or rack to prevent movement due to frost or ice
build-up and to allow for proper drainage of the unit, and placed above the average snowfall line in the area of installation.
Due to icing on the outdoor coil, the Acadia outdoor unit must be mounted so that run off of water during defrost will not cause
a safety issue when the water refreezes. Example: Do not set the Acadia outdoor unit so that defrost condensate will run across
a walkway.
The Acadia outdoor unit SHOULD NOT be placed under or near eaves, roof drains, or under roof pitches where ice, rain, or snow
may drop, where icicles may form, or where any other debris may fall on top of and/or damage unit.

INSTALLATION STEPS
8
(NOTE) On rooftop applications, mount on a level platform or frame. Place the Acadia outdoor unit above a load-bearing wall
and isolate the unit and line set from the structure. Arrange supporting members to adequately support the system and minimize
transmission of vibration to the building. Consult local codes governing rooftop applications.
(CAUTION) Do not allow POE oil lubricant to come into contact with roofing material(s). POE oil lubricant may deteriorate
certain types of synthetic roofing.
(NOTE) The Acadia outdoor unit must be level to within ±3 degrees.
Step 3 —Clearance Requirements
When installing this system, allow sufficient space for airflow, clearance, refrigerant piping, wiring, and service.
Allow at least 30-in. (76-cm.), 24-in. minimum, of clearance at the service end of the Acadia outdoor unit, and 48-in. (122-cm.)
minimum above the unit for proper airflow. Recommended clearance on the remaining sides is 18-in. (46-cm.), 12-in. (30.5-cm.)
minimum. The Acadia outdoor unit is not to be installed in any type of enclosed structure.
Maintain a distance of 36-in. (91-cm.) between units in multi-unit applications.
Position the unit(s) so that ice, snow, or water from roof or eaves cannot fall directly or indirectly on the Acadia outdoor unit.
Cover piping to ensure that ice and snow will not damage the refrigerant lines and insulation.
(NOTE) On rooftop applications, locate the Acadia outdoor unit at least 12-in. (30.5-cm.) above the roof surface.
Figure 1 - Clearance Requirements

INSTALLATION STEPS
9
Step 4 —Install Indoor Air Handler and Expansion Device
For proper system operation, reliability, and performance the indoor air handler must be installed with a balance port, bi-directional
heat pump TXV specifically designed to operate with R-410A refrigerant at the given system capacity. Do not install an air handler
with evaporator coils having a capillary tube or an orifice type metering device.
INDOOR AIR HANDLER INSTALLATION
(NOTE) In the event the indoor air handler is installed prior to the rest of the system, it is recommended that all air handler
settings and wiring be double checked at this point.
There is only one Hallowell Approved air handler. Any other air handler installed has no guarantee on the efficiency, life expectancy,
and/or performance. Indoor air handlers used with an Acadia outdoor unit must be capable of operating with a minimum of 2
blower speeds. On variable speed air handlers, ensure the jumpers are placed for recommended air flow requirements. All indoor
air handling units must be installed as specified by the manufacturer’s installation instructions. However, the following
recommendations should be considered to minimize noise and service issues:
Take the proper precautions when mounting the indoor air handler for noise and vibration dampening. Use duct isolators on
both the supply and return ducts connecting to the indoor air handler.
DO NOT run the system and/or the indoor air handler fan while construction is in progress.
All ductwork must be properly sized for proper airflow, 400 CFM per ton at a 0.10 to 0.15 static pressure. Undersized ducts will
reduce the system performance, resulting in a reduced life, higher operational costs, and/or unit damage. Any questions with
the duct work, consult Hallowell International Technical Support.
Ensure that all air registers are in the fully open position.
Utilize flex connections at the main ductwork supply and return to isolate potential vibrations and noise. Ensure ductwork does
not come in contact with structural building members.
Be sure the filter cover is installed on the indoor air handler, ensuring easy access to the filter for routine maintenance and/or
filter changes. Any gaps, holes and joints should be properly sealed to prevent air leakage.
Seal all joints and insulate all ductwork.
Be sure the condensate drain and/or line set do not block access to the filter door or any other access panels of the indoor air
handler.
(CAUTION) A Duct Bypass must NOT be used due to the high output capacity of the Acadia during certain outdoor ambient
conditions. Consult Hallowell International Technical Support for additional support.
IMPORTANT: An air filter must be installed upstream of the return side of the indoor air handler coil, such that the filter is easy to
access for routine filter changes.
(NOTE) Improper installation of equipment may result in undesirable noise levels in the living area.
The Hallowell matched air handler(s) come from the factory with bi-flow TXVs, not installed, specifically designed for R-410A.
Installation of a TXV is required.
IMPORTANT: When installing the Acadia outdoor unit with the indoor air handler, an R-410A rated TXV must be installed. NO
OTHER TYPE OF METERING DEVICE MAY BE USED! Contact Hallowell International Technical Support for any questions about
sizing or applications.