Water Furnace 3 Series User manual

IM2300AL 09/14
Installation Information
Water Piping Connections
Hot Water Generator Connections
Electrical
Startup Procedures
Troubleshooting
Preventive Maintenance
3 Series 300A11 Installation Manual
Geothermal Heat Pump
• R-410A Refrigerant
• 2, 3, 4, 5, 6 Ton Dual Capacity
300A11
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3 SERIES 300A11 INSTALLATION MANUAL
Table of Contents
Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Closed Loop Ground Source Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Open Loop Ground Water Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Hot Water Generator Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13
Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Electronic Thermostat Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Auxiliary Heat Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Auxiliary Heat Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Blower Performance Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-19
Physical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
The Aurora™ Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-25
Reference Calculations and Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-29
Unit Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Operating Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31-35
Pressure Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Compressor and Thermistor Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Refrigerant Circuit Guideline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Heat of Extraction/Rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Antifreeze Corrections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Service Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Revision Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 45

4
3 SERIES 300A11 INSTALLATION MANUAL
L
1 2 3 4-6 7 8 9
Model Type
L – 3 Series Water-to-Air
Compressor Type
D – Dual-Capacity
Cabinet Configuration
V – Vertical
H - Horizontal
Unit Capacity (MBTUH)
024, 036, 048, 060, 072
Vintage
* - Factory Use Only
Voltage
1 – 208-230/60/1
Hot Water Generation
0 – No Hot Water Generation
1 – Hot Water Generation with
Factory Installed Pump
Blower Options
4 – 5 Speed ECM
IntelliStart®& Air Coil Option
N – No IntelliStart, Uncoated Coil
A – IntelliStart, Uncoated Coil
B – No IntelliStart, AlumiSeal
C – IntelliStart, AlumiSeal
Control Option
A – AuroraTM Base Controls
Filter Option
2 – Duct Flanges, No Filter
0 – 1" Filter Rack with 1" MERV 8 Filter
1 – 1" Filter Rails with 1" MERV 8 Filter
Return Air Configuration
L – Left
R – Right
Discharge Air Configuration
T – Top (Vertical)
S – Side (Horizontal)
E – End (Horizontal)
Water Coil Option
C – Copper
N – CuproNickel
Rev.: 12 June 2014D
10 11 12 14
D V 048 * 1 0 4 C T L 2
13
A
15
N
16
Model Nomenclature

5
3 SERIES 300A11 INSTALLATION MANUAL
WARNING: Before performing service or
maintenance operations on a system, turn off main
power switches to the indoor unit. If applicable,
turn off the accessory heater power switch.
Electrical shock could cause personal injury.
Installing and servicing heating and air conditioning
equipment can be hazardous due to system pressure and
electrical components. Only trained and qualified service
personnel should install, repair or service heating and air
conditioning equipment. Untrained personnel can perform
the basic maintenance functions of cleaning coils and
cleaning and replacing filters. All other operations should
be performed by trained service personnel. When working
on heating and air conditioning equipment, observe
precautions in the literature, tags and labels attached to the
unit and other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work
gloves. Use a quenching cloth for brazing operations and
have a fire extinguisher available.
Moving and Storage
Move units in the normal “up” orientation. Horizontal units
may be moved and stored per the information on the
packaging. Do not stack more than three units in total
height. Vertical units may be stored one upon another to
a maximum height of two units. Do not attempt to move
units while stacked. When the equipment is received, all
items should be carefully checked against the bill of lading
to be sure all crates and cartons have been received.
Examine units for shipping damage, removing the units
from the packaging if necessary. Units in question should
also be internally inspected. If any damage is noted, the
carrier should make the proper notation on the delivery
receipt, acknowledging the damage.
Unit Location
Locate the unit in an indoor area that allows for easy removal
of the filter and access panels. Location should have enough
space for service personnel to perform maintenance or
repair. Provide sufficient room to make water, electrical and
duct connection(s). If the unit is located in a confined space,
such as a closet, provisions must be made for return air to
freely enter the space by means of a louvered door, etc. Any
access panel screws that would be difficult to remove after
the unit is installed should be removed prior to setting the
unit. On horizontal units, allow adequate room below the
unit for a condensate drain trap and do not locate the unit
above supply piping. Care should be taken when units are
located in unconditioned spaces to prevent damage from
frozen water lines and excessive heat that could damage
electrical components.
Safety Considerations
General Installation Information
Figure 1: Vertical Unit Mounting
2 in. Extruded
Polystyrene
Installing Vertical Units
Prior to setting the unit in place, remove and discard the
compressor hold down shipping bolt located at the front of
the compressor mounting bracket.
Vertical units are available in left or right air return
configurations. Top air discharge vertical units should be
mounted level on a vibration absorbing pad slightly larger
than the base to provide isolation between the unit and the
floor. It is not necessary to anchor the unit to the floor (see
below).
If access to the left side of the unit will be limited after
installation, remove the two mounting screws on the
left side of the control box before setting the unit (leave
the two front mounting screws intact). This will allow
the control box to be removed with only the two front
mounting screws for future service.

6
3 SERIES 300A11 INSTALLATION MANUAL
General Installation Information cont.
Insulate supply
plenum and use
at least one 90
elbow to
reduce noise
Electrical
Disconnect
Flexible Duct
Collar Threaded Rods
Line Voltage
Ball Valves
Hose
Kits
To Line
Power
To
Thermostat
Hanging
Brackets
(Included)
Building Water Loop
O
Figure 2: Horizontal Unit Mounting
Installing Horizontal Units
Remove and discard the compressor hold down shipping
bolt located at the front of the compressor mounting
bracket prior to setting the unit in place. Horizontal units
are available with side or end discharge and may be easily
field converted by flipping the blower discharge panel
(The 024 model requires an additional discharge panel).
Horizontal units are normally suspended from a ceiling
by four or six 3/8 in. diameter threaded rods. The rods
are usually attached to the unit by hanger bracket kits
furnished with each unit.
Lay out the threaded rods per the dimensions in Figure
3. Assemble the hangers to the unit as shown. Securely
tighten the brackets to the unit using the weld nuts located
on the underside of the bottom panel. When attaching the
hanger rods to the bracket, a double nut is required since
vibration could loosen a single nut. To allow filter access,
one bracket on the filter side should be installed 180° from
the position shown in Figure 3. The unit should be pitched
approximately 1/4-inch towards the drain in both directions
to facilitate the removal of condensate. Use only the bolts
provided in the kit to attach hanger brackets. The use of
longer bolts could damage internal parts.
Some residential applications require the installation of
horizontal units on an attic floor. In this case, the unit
should be set in a full size secondary drain pan on top of a
vibration absorbing pad. The secondary drain pan prevents
possible condensate overflow or water leakage damage to
the ceiling. The secondary drain pan is usually placed on a
plywood base isolated from the ceiling joists by additional
layers of vibration absorbing material.
CAUTION: Do not use rods smaller than 3/8-inch
diameter since they may not be strong enough
to support the unit. The rods must be securely
anchored to the ceiling.

7
3 SERIES 300A11 INSTALLATION MANUAL
General Installation Information cont.
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Figure 3: Hanger Location and Assembly
Weight Distribution
Model Vertical
Weight
Horizontal
Weight
Horizontal Weight Distribution
Front Back
123 4
024 lb 198 228 69 63 73 23
kg 90 103 31 29 33 10
036 lb 221 250 80 65 70 35
kg 100 113 36 29 32 16
048 lb 303 325 93 97 101 34
kg 137 147 42 44 46 15
060 lb 329 358 110 100 103 45
kg 149 162 50 45 47 20
072 lb 350 369 141 78 71 79
kg 159 167 64 35 32 36
8/3/2014
Hanger Bracket Locations (See Figure 3)
Model Hanger Kit
Part Number
Unit Hanger Dimensions
ABCD
024 in. 99S500A04 53.7 25.1 21.4 n/a
cm. 136.4 63.8 54.4 n/a
036 in. 99S500A04 63.7 25.1 21.4 n/a
cm. 161.8 63.8 54.4 n/a
048-060 in. 99S500A03 72.7 28.1 24.4 29.3
cm. 184.7 71.4 62.0 74.4
070 in. 99S500A03 77.7 28.1 24.4 29.3
cm. 197.4 71.4 62.0 74.4

8
3 SERIES 300A11 INSTALLATION MANUAL
thread the female locking ring onto the pipe threads, while
maintaining the brass connector in the desired direction.
Tighten the connectors by hand, then gently snug the
fitting with pliers to provide a leak-proof joint. When
connecting to an open loop (ground water) system, thread
any 1-inch MPT fitting (SCH80 PVC or copper) into the
swivel connector and tighten in the same manner as noted
above. The open and closed loop piping system should
include pressure/temperature taps for serviceability.
Never use flexible hoses smaller than 1-inch inside diameter
on the unit. Limit hose length to 10 feet per connection.
Check carefully for water leaks.
Duct System
An air outlet collar is provided on vertical top air discharge
units and all horizontal units to facilitate a duct connection.
A flexible connector is recommended for discharge
and return air duct connections on metal duct systems.
Uninsulated duct should be insulated with a minimum of
1-inch duct insulation. Application of the unit to uninsulated
ductwork in an unconditioned space is not recommended
as the unit’s performance will be adversely affected.
If the unit is connected to existing ductwork, check the duct
system to ensure that it has the capacity to accommodate
the air required for the unit application. If the duct is too
small, as in the replacement of heating only systems, larger
ductwork should be installed. All existing ductwork should
be checked for leaks and repaired if necessary.
The duct system should be sized to handle the design
airflow quietly and efficiently. To maximize sound
attenuation of the unit blower, the supply and return
plenums should include an internal duct liner of fiberglass
or constructed of ductboard for the first few feet. On
systems employing a sheet metal duct system, canvas
connectors should be used between the unit and the
ductwork. If air noise or excessive airflow is a problem, the
blower speed can be changed.
Water Piping
The proper water flow must be provided to each unit
whenever the unit operates. To assure proper flow, use
pressure/temperature ports to determine the flow rate.
These ports should be located at the supply and return
water connections on the unit. The proper flow rate cannot
be accurately set without measuring the water pressure
drop through the refrigerant-to-water heat exchanger.
All source water connections on residential units are swivel
piping fittings (see Figure 4) that accept a 1-inch male pipe
thread (MPT). The swivel connector has a rubber gasket
seal similar to a rubber hose gasket, which when mated
to the flush end of any 1-inch threaded pipe provides a
leak-free seal without the need for thread sealing tape
or compound. Check to ensure that the rubber seal is in
the swivel connector prior to attempting any connection.
The rubber seals are shipped attached to the waterline.
To make the connection to a ground loop system, mate
the brass connector (supplied in CK4LI connector kit)
against the rubber gasket in the swivel connector and
Figure 4: Swivel Connections
Locking
Ring
Stainless
Steel
Snap Ring
Gasket
Support
Sleeve
Gasket
Material
General Installation Information cont.
Water Quality
In ground water situations where scaling could be heavy
or where biological growth such as iron bacteria will be
present, a closed loop system is recommended. The heat
exchanger coils in ground water systems may, over a period
of time, lose heat exchange capabilities due to a buildup
of mineral deposits inside. These can be cleaned, but only
by a qualified service mechanic, as special solutions and
pumping equipment are required. Hot water generator coils
can likewise become scaled and possibly plugged. In areas
with extremely hard water, the owner should be informed
that the heat exchanger may require occasional flushing.
Units with cupronickel heat exchangers are recommended
for open loop applications due to the increased resistance
to build-up and corrosion, along with reduced wear caused
by acid cleaning. Failure to adhere to the guidelines in the
water quality table could result in the loss of warranty.
CAUTION: When attaching ductwork or
accessories to the cabinet, make sure the
fasteners do not come into contact with the
air coil.

9
3 SERIES 300A11 INSTALLATION MANUAL
1/2'' Pitch
Drain
1.5 in. 1.5 in.
PVC tube stub
PVC coupling Vent (if needed)
PVC tube stub
1/8 in. per foot
NOTE: Check dimensional data for actual PVC sizes.
Figure 6: Unit Pitch for Drain
Water Quality Guidelines
Figure 5: Horizontal Drain Connection
Low Water Coil Limit
Set the freeze sensing switch SW2-1 on the Aurora Base
Control (ABC) printed circuit board for applications using
a closed loop antifreeze solution to “LOOP” (15°F). On
applications using an open loop/ground water system (or
closed loop no antifreeze), set this dip switch to “WELL”
(30°F), the factory default setting. (Refer to the DIP Switch
Settings table in the Aurora Control section.)
Condensate Drain
On vertical units, the internal condensate drain assembly
consists of a drain tube which is connected to the
drain pan, a 3/4-inch PVC female adapter and a flexible
connecting hose. The female adapter may exit either the
front or the side of the cabinet. The adapter should be
glued to the field-installed PVC condensate piping. On
vertical units, a condensate hose is inside all cabinets as a
trapping loop; therefore, an external trap is not necessary.
On horizontal units, a PVC stub is provided for condensate
drain piping connection. An external trap is required (see
below). If a vent is necessary, an open stand pipe may be
applied to a tee in the field-installed condensate piping.
General Installation Information cont.
Material Copper 90/10 Cupro-Nickel 316 Stainless Steel
pH Acidity/Alkalinity 7- 9 7 - 9 7 - 9
Scaling Calcium and Magnesium
Carbonate
(Total Hardness)
less than 350 ppm
(Total Hardness)
less than 350 ppm
(Total Hardness)
less than 350 ppm
Hydrogen Sulfide Less than .5 ppm (rotten egg smell
appears at 0.5 PPM) 10 - 50 ppm Less than 1 ppm
Sulfates Less than 125 ppm Less than 125 ppm Less than 200 ppm
Chlorine Less than .5 ppm Less than .5 ppm Less than .5 ppm
Chlorides Less than 20 ppm Less than125 ppm Less than 300 ppm
Carbon Dioxide Less than 50 ppm 10 - 50 ppm 10- 50 ppm
Ammonia Less than 2 ppm Less than 2 ppm Less than 20 ppm
Corrosion Ammonia Chloride Less than .5 ppm Less than .5 ppm Less than .5 ppm
Ammonia Nitrate Less than .5 ppm Less than .5 ppm Less than .5 ppm
Ammonia Hydroxide Less than .5 ppm Less than .5 ppm Less than .5 ppm
Ammonia Sulfate Less than .5 ppm Less than .5 ppm Less than .5 ppm
Total Dissolved Solids (TDS) Less than 1000 ppm 1000-1500 ppm 1000-1500 ppm
LSI Index +0.5 to -.05 +0.5 to -.05 +0.5 to -.05
Iron
Fouling
Iron, Fe²+ ( F e r r o u s )
Bacterial Iron Potential < .2ppm < .2 ppm < .2 ppm
(Biological
Growth) Iron Oxide Less than 1 ppm. Above this level
deposition will occur.
Less than 1 ppm. Above this level
deposition will occur.
Less than 1 ppm. Above this
level deposition will occur.
Erosion Suspended Solids Less than 10 ppm and filtered for max
of 600 micron size
Less than 10 ppm and filtered for
max of 600 micron size
Less than 10 ppm and filtered
for max of 600 micron size
Threshold Velocity
(Fresh Water) < 6 ft/sec < 6 ft/sec <6 ft/sec
NOTE: Grains = PPM divided by 17 • mg/l is equivalent to PPM 7/17/14

10
3 SERIES 300A11 INSTALLATION MANUAL
Figure 7: Closed Loop Ground Source Application
NOTE: For closed loop systems with antifreeze protection,
set SW2-1 to the “LOOP” (15°F) position. (Refer to the DIP
Switch Settings table in the Aurora Control section.)
Once piping is completed between the unit, pumps and the
ground loop (see figure below), final purging and charging
of the loop is required. A flush cart (or a 1.5 HP pump
minimum) is needed to achieve adequate flow velocity
in the loop to purge air and dirt particles from the loop
itself. Antifreeze solution is used in most areas to prevent
freezing. Flush the system adequately to remove as much
air as possible then pressurize the loop to a static pressure
of 40-50 psi (summer) or 50-75 psi (winter). This is
normally adequate for good system operation. Loop static
pressure will fluctuate with the seasons. Pressures will be
higher in the winter months than during the cooling season.
This fluctuation is normal and should be considered when
initially charging the system.
After pressurization remove label on pump, vent (burp)
screw in the center of the pump two (2) turns open (water
will drip out). Wait until all air is purged from the pump,
then tighten the plug. Ensure that the loop pumps provide
adequate flow through the unit(s) by checking the pressure
drop across the heat exchanger and comparing it to the unit
capacity data in this catalog. 2.5 to 3 gpm of flow per ton of
cooling capacity is recommended in earth loop applications.
Flexible Duct
Collar
Vibration Absorbing Pad
P/T Plugs
Drain
Hot Water Generator
Connections
Auxiliary
Heater
Knockout
Low
Voltage to
Thermostat
Unit Supply
Auxiliary Heat
Supply
Insulated piping
or hose kit
Disconnects
(If Applicable)
Unit Power
P/T
TO
LOOP
GeoLink
®
Flow
Center
GeoLink®
Polyethylene w/
Armaflex®
Insulation
NOTE: Additional information can be found in Flow
Center installation manual and Flush Cart manual.
Closed Loop Ground Source Systems
Figure 8: Primary/Secondary Wiring with Aurora Base
Control (no AXB Board)
CC
T2 T1
Compressor
C
R
S
Blue
L1
L2
Black
Red
Tan(6)
Cap
Ext Pump
1/2 hp Total
208-230/60/1
Pump
G
1
2
PB1
1
2
Pump
Circuit
Breaker
Circuit
Breaker
1
5A
5A
Optional Internal
HWG Pump
HWG
Pump
Purple
Hot Water
Limit Switch
130°F
Blue
12
3
Cabinet
HW Switch
Field Supplied
Relay for Heat
Pump 1
Field Supplied
Relay for Heat
Pump 2
Heat Pump 1
Contactor Coil
Heat Pump 2
Contactor Coil
Field Supplied
Fuses 5A
Multiple Units on One Flow Center
To achieve this same feature when heat pumps have only
the Aurora Base Control, follow Figure 8a. Installer will be
required to supply fuses, two relays, and wiring.

11
3 SERIES 300A11 INSTALLATION MANUAL
Typical open loop piping is shown below. Always maintain
water pressure in the heat exchanger by placing water
control valves at the outlet of the unit to prevent mineral
precipitation. Use a closed, bladder-type expansion tank
to minimize mineral formation due to air exposure. Ensure
proper water flow through the unit by checking pressure
drop across the heat exchanger and comparing it to the
figures in unit capacity data tables in the specification
catalog. 1.5-2 gpm of flow per ton of cooling capacity is
recommended in open loop applications.
Discharge water from the unit is not contaminated in any
manner and can be disposed of in various ways, depending
Figure 9b: Open Loop Solenoid Valve Connection Option
Typical slow operating external 24V water solenoid valve
(type V) wiring.
Figure 9a: Open Loop Solenoid Valve Connection Option
Typical quick operating external 24V water solenoid valve
(type PPV100 or BPV100) wiring.
Flexible
Duct Collar
Vibration
Absorbing Pad
P/T Plugs
Drain
Hot Water Generator
Connections
Auxiliary
Heater
Knockout
Low Voltage
to Thermostat
and Valve
Unit Supply
Aux. Heat Supply
Water Out
Water In
Shut Off Valves
Boiler Drains
For HX Flushing
Disconnects
(IfApplicable)
Rubber Bladder
Expansion Tank
Solenoid
Valve
Shut Off Valves
(to isolate solenoid
valve while acid flushing)
Strainer
Flow Control
Valve
(on outlet of
Solenoid Valve)
Compressor
Line Voltage
Figure 10: Open System - Groundwater Application
NOTE: SW2-4 and SW2-5 should be “OFF” to cycle with
the compressor.
Open Loop Ground Water Systems
on local codes, i.e. recharge well, storm sewer, drain field,
adjacent stream or pond, etc. Most local codes forbid
the use of sanitary sewer for disposal. Consult your local
building and zoning departments to assure compliance in
your area.
NOTE: For open loop/groundwater systems or systems
that do not contain an antifreeze solution, set SW2-Switch
#1 to the “WELL” (30°F) position. (Refer to the DIP Switch
Settings table in the Aurora Control section.) Slow opening/
closing solenoid valves (type V) are recommended to
eliminate water hammer.
Acc Com
Acc NC
Acc NO
1
2
3
C
RP1
P2
SV
Solenoid
Valve
ABC Board
NOTE: SW2-4 should be “ON” and SW2-5 should be “OFF”
when using a slow opening (V) water valve.
C
R
Acc Com
ACC NC
Acc NO
C
W/Y
V Valve ABC Board
Note: SW2-4 should be ‘ON’ and SW2-5 should be ‘OFF’.
Figure 9c: Wiring diagram for dual water valve installations,
one type V slow operating solenoid and one BPV100/
PPV100 quick operating solenoid.
C
W/Y
CCG or CC GND
CC
CC
U
SV CC2 or CCHI
Logic Board
Taco Valve
V100FPT
(Type V)
BPV/PPV
Solenoid
Compressor
Contactor
Coil

12
3 SERIES 300A11 INSTALLATION MANUAL
To maximize the benefits of the hot water generator a
minimum 50-gallon water heater is recommended For
higher demand applications, use an 80-gallon water
heater or two 50-gallon water heaters connected in a
series as shown below. Two tanks plumbed in a series
is recommended to maximize the hot water generator
capability. Electric water heaters are recommended. Make
sure all local electrical and plumbing codes are met for
installing a hot water generator. Residential units with hot
water generators contain an internal circulator and fittings.
A water softener is recommended with hard water (greater
than 10 grains or 170 total hardness).
NOTES: 1) Using a preheat tank, as shown in Figure 12, will
maximize hot water generator capabilities. 2) The hot water
generator coil is constructed of vented double wall copper
suitable for potable water.
Figure 11: Typical Hot Water Generator Installation
CAUTION: Elements will burn out if energized dry.
Figure 12: Hot Water Generator Installation In Preheat Tank
In
Venting Waste Valve
or Vent Coupling
3/4" x 3/4"
x 1/2" tee Cold
Water In
Hot
Water Out
P/T Relief
Valve
P/T Relief
Valve
HWG
Water In
HWG
Water Out
Drain ValveDrain Valve
Storage
Tank
Electric Powered
Water Heater
Water Tank Preparation
To install a unit with a hot water generator, follow these
installation guidelines.
1. Turn off the power to the water heater.
2. Attach a water hose to the water tank drain
connection and run the other end of the hose to an
open drain or outdoors.
3. Close the cold water inlet valve to the water heater tank.
4. Drain the tank by opening the valve on the bottom
of the tank, then open the pressure relief valve or hot
water faucet.
5. Flush the tank by opening the cold water inlet valve to
the water heater to free the tank of sediments. Close
when draining water is clear.
6. Disconnect the garden hose and remove the drain valve
from the water heater.
7. Refer to Plumbing Installation and Hot Water
Generator Startup.
NOTE: This configuration maximizes hot water
generator capability.
DrainValve
In
P/TRelief
Valve
Cold
Water In Hot
Water Out
HWG
Water In
HWG
Water Out
Venting Waste
Valve or Vent
Coupling
3/4” x 3/4” x 1/2” tee
Hot Water Generator Connections

13
3 SERIES 300A11 INSTALLATION MANUAL
Hot Water Generator Startup
1. Turn the hot water generator switch to the “ON”
position. The hot water generator switch will allow the
hot water generator pump to be enabled or disabled by
the service technician or homeowner.
2. Close the drain valve to the water heater.
3. Open the cold water supply to the tank.
4. Open a hot water faucet in the building to bleed air from
the system. Close when full.
5. Open the pressure relief valve to bleed any remaining air
from the tank, then close.
6. If so equipped, turn the venting (burping) screw in the
center of the pump two (2) turns open (water will drip
out), wait until all air is purged from the pump, then
tighten the plug. Use vent couplings to bleed air from
the lines.
7. Carefully inspect all plumbing for water leaks and
correct as required.
8. Before restoring electrical supply to the water heater,
adjust the temperature setting on the tank.
• On tanks with both upper and lower elements,
the lower element should be turned down to
the lowest setting, approximately 100°F. The
upper element should be adjusted to 120°F to
130°F. Depending upon the specific needs of
the customer, you may want to adjust the upper
element differently.
• On tanks with a single element, lower the
thermostat setting to 120°F.
9. After the thermostat(s) is adjusted, replace the access
cover and restore electrical supply to the water heater.
10.Make sure that any valves in the hot water generator
water circulating circuit are open.
11. Turn on the unit to first stage heating.
12. The hot water generator pump should be running. When
the pump is first started, turn the venting (burping)
screw located under the Burp Me label (if equipped) in
the center of the pump two (2) turns open until water
dribbles out, then retighten venting screw. Allow the
pump to run for at least five minutes to ensure that
water has filled the circulator properly. Be sure the
switch for the hot water generator pump switch is “ON”.
13. The temperature difference between the water entering
and leaving the hot water generator should be 5°F to
15°F. The water flow should be approximately 0.4 gpm
per ton of nominal cooling.
14. Allow the unit to heat water for 15 to 20 minutes to be
sure operation is normal.
Plumbing Installation
1. Inspect the dip tube in the water heater cold inlet
for a check valve. If a check valve is present it must
be removed or damage to the hot water generator
circulator will occur.
2. Remove drain valve and fitting.
3. Thread the 3/4-inch NPT x 3-1/2-inch brass nipple into
the water heater drain port.
4. Attach the center port of the 3/4-inch FPT tee to the
opposite end of the brass nipple.
5. Attach the 1/2-inch copper to 3/4-inch NPT adaptor to
the side of the tee closest to the unit.
6. Install the drain valve on the tee opposite the adaptor.
7. Run interconnecting tubing from the tee to hot water
generator water out.
8. Cut the cold water “IN” line going to the water heater.
9. Insert the reducing solder tee in line with cold water
“IN” line as shown.
10.
Run interconnecting copper tubing between the unit hot
water generator water “IN” and the tee (1/2-inch nominal).
The recommended maximum distance is 50 feet.
11. To prevent air entrapment in the system, install a vent
coupling at the highest point of the interconnecting lines.
12. Insulate all exposed surfaces of both connecting water
lines with 3/8-inch wall closed cell insulation.
NOTE: All plumbing and piping connections must comply
with local plumbing codes.
CAUTION: Never operate the HWG circulating
pump while dry. If the unit is placed in operation
before the hot water generator piping is
connected, be sure that the pump switch is set
to the OFF position.
Hot Water Generator Connections cont.
Hot Water Generator Switch
The hot water generator switch is taped in the disabled
position at the factory.

14
3 SERIES 300A11 INSTALLATION MANUAL
General
Be sure the available power is the same voltage and phase
as that shown on the unit serial plate. Line and low voltage
wiring must be done in accordance with local codes or the
National Electric Code, whichever is applicable.
Unit Power Connection
Connect the incoming line voltage wires to L1 and L2 of
the contactor as shown in Figure 13B for single-phase unit.
Consult the Unit Electrical Data in this manual for correct
fuse sizes.
Open lower front access panel. Insert power wires through
knockouts on lower left side of cabinet. Route wires
through left side of control box and connect to contactor
and ground (Figure 13B).
Accessory Relay
A set of “dry” contacts has been provided to control
accessory devices, such as water solenoid valves on open
loop installations, electronic air cleaners, humidifiers, etc.
This relay contact should be used only with 24 volt signals
and not line voltage power. The relay has both normally
open and normally closed contacts and can operate with
either the fan or the compressor. Use DIP switch SW2-4
and 5 to cycle the relay with blower, compressor, or control
a slow opening water valve. The relay contacts are available
on terminals #1 and #3 of P2.
208 Volt Operation
All 208/230 units are factory wired for 230 volt operation.
For 208 volt operation, the red and blue transformer wires
must be switched on terminal strip PB2.
Figure 13B:
Line Voltage 208-230/60/1 control box
Figure 13A:
Wire access
Electrical Connections
Pump Power Wiring
See Figure 14 for electrical connections from control box
to pumps.
FC1/FC2 style flow centers with fixed speed pumps
connect to PB1 in the control box.
Figure 14: Pump Wiring 208-230/60/1
L2
L1
L1
L2
PB1
1
2
2
1
PB1
External
Loop Pump(s)
208-230/60/1
1/2 hp Max

15
3 SERIES 300A11 INSTALLATION MANUAL
R
Y1
C
W
O
G
L
24VAC (Hot)
24VAC (Common)
Compressor (1st Stage)
Aux. Heat
Reversing Valve
Blower Relay
System Monitor
Heat Pump Connection
Thermostat Connection
Y2 Compressor (2nd Stage)
Electronic Thermostat Installation
Position the thermostat subbase against the wall so that
it is level and the thermostat wires protrude through
the middle of the subbase. Mark the position of the
subbase mounting holes and drill holes with a 3/16-inch
bit. Install supplied anchors and secure base to the wall.
Thermostat wire must be 8-conductor (4 or 5 counductor
for communicating thermostats), 20-AWG (minimum)
wire. Strip the wires back 1/4-inch (longer strip lengths
may cause shorts) and insert the thermostat wires into
the connector as shown. Tighten the screws to ensure
secure connections. The thermostat has the same type
connectors, requiring the same wiring. See instructions
enclosed in the thermostat for detailed installation and
operation information. The W1 terminal on TPCM32U03
and TPCM32U04 communicating thermostats may be
hard wired to provide aux/emergency heat in the event
communication is lost between the thermostat and the
ABC microprocessor.
NOTE: Aurora Base Control (ABC) DIP switch SW2-7 is
required to be in the “OFF” position for the control to
operate with FaultFlash or ComforTalk thermostats. SW2-7
in the “ON” position configures the control to operate with
typical thermostats (continuous lockout signal). There
must be a wire connecting Y2 on the Aurora controller
to 2nd stage compressor on the thermostat for proper
operation. SW2-7 DIP switch position is not relevant with
communicating thermostats.
Figure 15a: Thermostat Wiring (Y1 Style Signals)
C
P7
P1
–
R
W
C 24VAC (Common)
R 24VAC (Hot)
B- Communication
W1 (Optional)
Heat Pump Connection
Thermostat Connection
+A+ Communication
TPCM32U03/TPCM32U04
Monochrome Thermostats
C
P7
–
R
C 24VAC (Common)
R 24VAC (Hot)
DX- Communication
Heat Pump
Connection
Thermostat
Connection
+DX+ Communication
TPCC32U01
Color Touchscreen
Thermostat
Figure 15b: Thermostat Wiring (Communicating Style Signals)

16
3 SERIES 300A11 INSTALLATION MANUAL
Auxiliary Heat Ratings
Auxiliary Heat Electrical Data
Electrical Data
Model
KW
Stages
BTU/HR
Min CFM
208V 230V 208V 230V 024 036 048 - 072
EAM(H)5A 3.6 4.8 1 12,300 16,300 450 
EAM(H)8A 5.7 7.6 2 19,400 25,900 550 
EAM(H)10A 7.2 9.6 2 24,600 32,700 650 
EAL(H)10A 7.2 9.6 2 24,600 32,700 1100 
EAL(H)15A 10.8 14.4 2 36,900 49,100 1250 
EAL(H)20A 14.4 19.2 2 49,200 65,500 1500 
Order the “H” part number when installed on horizontal and vertical rear discharge units 6/9/2014
Air flow level for auxiliary heat (Aux) must be equal to or above the minimum CFM in this table
Model Supply
Circuit
Heater Amps Min Circuit Amp Fuse (USA) Fuse (CAN) CKT BRK
208 V 240 V 208 V 240 V 208 V 240 V 208 V 240 V 208 V 240 V
EAM(H)5A Single 17.3 20.0 26.7 30.0 30 30 30 30 30 30
EAM(H)8A Single 27.5 31.7 39.3 44.6 40 45 40 45 40 45
EAM(H)10A Single 34.7 40.0 48.3 55.0 50 60 50 60 50 60
EAL(H)10A Single 34.7 40.0 53.3 60.0 60 60 60 60 60 60
EAL(H)15A
Single 52.0 60.0 75.0 85.0 80 90 80 90 70 100
L1/L2 34.7 40.0 53.3 60.0 60 60 60 60 60 60
L3/L4 17.3 20.0 21.7 25.0 25 25 25 25 20 30
EAL(H)20A
Single 69.3 80.0 96.7 110.0 100 110 100 110 100 100
L1/L2 34.7 40.0 53.3 60.0 60 60 60 60 60 60
L3/L4 34.7 40.0 43.3 50.0 45 50 45 50 40 50
All heaters rated single phase 60 cycle and include unit fan load 3/10/14
All fuses type “D” time delay (or HACR circuit breaker in USA)
Supply wire size to be determined by local codes
Dual Capacity Unit with 5 Speed ECM Motor
Model Rated
Voltage
Voltage
Min/Max
Compressor HWG
Pump
FLA
Ext
Loop
FLA
Blower
Motor
FLA
Total
Unit
FLA
Min
Circ
Amp
Max
Fuse/
HACR
MCC RLA LRA LRA**
024 208-230/60/1 187/253 18.2 11.6 58.3 21.0 0.4 5.4 4.1 21.5 24.5 35
036 208-230/60/1 187/253 23.8 15.2 83.0 30.0 0.4 5.4 4.1 25.1 28.9 40
048 208-230/60/1 187/253 33.0 21.1 104.0 37.0 0.4 5.4 7.6 34.5 39.8 60
060 208-230/60/1 187/253 42.3 27.1 152.9 54.0 0.4 5.4 7.6 40.5 47.2 70
072 208-230/60/1 187/253 46.3 29.6 179.2 63.0 0.4 5.4 7.6 43.0 50.4 80
**With optional IntelliStart 6/9/14
Rated Voltage of 208/230/60/1
HACR circuit breaker in USA only
All fuses Class RK-5

17
3 SERIES 300A11 INSTALLATION MANUAL
5-Speed ECM Constant Torque Motors
The 5-Speed ECM is a ‘Constant Torque’ ECM motor and
delivers air flow similar to a PSC but operates as efficiently as
an ECM Motor. Because it’s an ECM Motor, the 5-Speed ECM
can ramp slowly up or down like the ECM motor. There are 5
possible speed taps available on the 5-Speed ECM motor with
#1 being the lowest airflow and #5 being the highest airflow.
These speed selections are preset at the time of manufacture
and are easily changed in the field if necessary.
If more than one tap are energized at the same time, built
in logic gives precedence to the highest tap number and
allows air flow to change with G, Y1, Y2 and W signals or
with Fan, CC, CC2, and E1 output signals. Each of those
5 speeds has a specific ‘Torque’ value programmed into
the motor for each speed selection. As static pressure
increases, airflow decreases resulting in less torque on the
rotor. The motor responds only to changes in torque and
adjusts its speed accordingly.
The 5-Speed ECM motor is powered by line voltage but the
motor speed is energized by 24 VAC.
5-Speed ECM Benefits:
- High efficiency
- Soft start
- 5 speeds with up to 4 speeds on-line
- Built in logic allows air flow to change with G, Y1, Y2
and W signals
- Super efficient low airflow continuous blower setting (G)
Blower Performance Data
3 Series Dual Capacity with 5-Speed ECM
Model Motor
Speed
Motor
Tap
T’stat
Cnct.
Blower
Size
Motor
HP
Airflow (cfm) at External Static Pressure (in. wg)
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.6 0.7 0.8 0.9 1.00
024
High 5 W
9 x 7 1/2
1024 1013 1002 988 974 963 951 940 929 901 872 785 691 - - -
Med High 4 Y2 932 917 902 892 882 867 851 842 832 817 802 756 661 - - -
Med 3 835 826 816 801 785 772 759 749 738 719 700 677 636 - - -
Med Low 2 Y1 765 747 729 720 710 696 681 662 643 627 611 581 515 - - -
Low 1 G 665 656 647 626 605 593 580 561 541 519 496 443 392 - - -
036
High 5 W
9 x 7 1/2
1325 1319 1313 1293 1272 1242 1212 1158 1103 1058 1013 930 839 - - -
Med High 4 Y2 1279 1267 1254 1238 1222 1203 1184 1137 1089 1049 1008 926 836 - - -
Med 3 1229 1218 1206 1187 1167 1154 1140 1110 1079 1044 1008 929 829 - - -
Med Low 2 Y1 1201 1184 1167 1156 1145 1129 1113 1086 1058 1028 997 914 808 - - -
Low 1 G 1007 989 971 958 945 925 904 889 873 862 850 818 778 - - -
048
High 5 W
11 x 10 1
1890 1874 1857 1845 1833 1809 1784 1769 1754 1736 1718 1672 1629 1601 1562 1522
Med High 4 Y2 1769 1754 1739 1721 1703 1685 1666 1645 1623 1604 1585 1539 1499 1463 1432 1376
Med 3 1671 1652 1632 1614 1595 1576 1557 1536 1514 1494 1474 1430 1387 1351 1313 1173
Med Low 2 Y1 1574 1555 1535 1514 1492 1472 1452 1431 1410 1387 1363 1330 1284 1236 1108 1014
Low 1 G 1388 1370 1352 1322 1292 1264 1236 1216 1195 1178 1161 1095 984 916 842 787
060
High 5 W
11 x 10 1
2077 2066 2055 2044 2033 2017 2000 1966 1931 1904 1877 1841 1810 1791 1740 1653
Med High 4 Y2 1948 1937 1925 1910 1895 1880 1865 1831 1797 1778 1759 1720 1707 1680 1660 1612
Med 3 1810 1794 1778 1739 1700 1684 1667 1657 1646 1629 1612 1576 1583 1547 1510 1480
Med Low 2 Y1 1680 1667 1653 1618 1583 1562 1540 1522 1503 1488 1473 1465 1449 1410 1369 1319
Low 1 G 1594 1572 1550 1512 1474 1450 1426 1410 1393 1385 1376 1351 1325 1290 1168 1085
072
High 5 W
11 x 10 1
2402 2388 2373 2358 2343 2334 2325 2307 2289 2274 2258 2215 2177 2125 2052 1933
Med High 4 Y2 2209 2193 2177 2164 2151 2135 2118 2105 2092 2072 2052 2017 1982 1954 1925 1844
Med 3 2085 2072 2058 2045 2031 2010 1989 1972 1954 1936 1918 1881 1852 1821 1790 1751
Med Low 2 Y1 1961 1951 1940 1926 1911 1885 1859 1844 1829 1814 1798 1759 1727 1703 1670 1636
Low 1 G 1767 1751 1735 1715 1694 1678 1661 1640 1619 1602 1584 1548 1512 1475 1426 1397
Factory speed settings are in Bold 7/30/14
Air flow values are with dry coil and standard filter
For wet coil performance first calculate the face velocity of the air coil (Face Velocity [fpm] = Airflow [cfm] / Face Area [sq ft]).
Then for velocities of 200 fpm reduce the static capability by 0.03 in. wg, 300 fpm by 0.08 in. wg, 400 fpm by 0.12in. wg., and 500 fpm by 0.16 in. wg.
Highest setting is for auxiliary heat (W) and lowest setting is for constant blower (G). The “Y1” and “Y2” settings must be between the “G” and “W”
settings.
L
GN
C
12345 AUX - Gray
G - Blue
Y1 - Red Y2 - Tan
C - Black
L - Orange
G - Green N - Brown
High Voltage
Connections
3/16 in.
Low Voltage
Connections 1/4 in.
5-Speed ECM Motor Connections - Dual Capacity
CAUTION: Disconnect all power before perform-
ing this operation.
Setting Blower Speed - 5-Speed ECM
5-Speed ECM blower motors have five (5) speeds of which
four (4) are selectable on dual capacity.

18
3 SERIES 300A11 INSTALLATION MANUAL
TOP TOP
3 SERIES VERTICAL SUBMITTAL DATA
FRONT
LEFT RETURN
RIGHT RETURN
A
B
B
C
C
D
E
H
F
G
S
T
S
T
R R
Q Q
N
LO M
O
L
N
P
I
J
K
1.90 4.8
1.90 4.8
2 ft [61 cm]
Primary Service Access
2 ft [61 cm] Alternate
Service Access. Right Return
Opposite Side
Vertical
Top Flow
Model
Overall Cabinet Water Connections
Electrical
Connections Discharge Connection Return Connection
I
3/4”
cond
J
1/2”
cond
K
1/2”
cond
Duct Flange Installed Return Duct Flanges
AB CDEFGH
Loop
Water
FPT
HWG
Sweat
(I.D.)
LM N O PQ R S T
Width Depth Height Loop
In
Loop
Out
HWG
In
HWG
Out
Cond-
ensate
Power
Supply
Ext
Pump
Low
Votage
Supply
Width
Supply
Depth
Return
Depth
Return
Height
024 in. 22.5 26.5 39.4 2.3 5.3 13.4 16.4 9.6 1”
Swivel
1/2”
female
8.9 11.4 13.7 6.3 0.7 14.0 14.0 2.7 2.3 22.0 18.0 1.8
cm. 57.2 67.3 100.1 5.8 13.5 34.0 41.7 24.4 22.6 29.0 34.8 16.0 1.8 35.6 35.6 6.9 5.8 55.9 45.7 4.6
036 in. 22.5 26.5 44.5 2.0 7.0 13.5 16.5 10.2 1”
Swivel
1/2”
female
9.5 12.1 14.3 6.1 0.8 14.0 14.0 4.4 2.4 22.0 22.0 2.0
cm. 57.2 67.3 113.0 5.1 17.8 34.3 41.9 25.9 24.1 30.7 36.3 15.5 2.0 35.6 35.6 11.2 6.1 55.9 55.9 5.1
048-
060
in. 25.6 31.6 50.4 2.3 7.3 15.9 18.9 10.6 1”
Swivel
1/2”
female
9.8 12.3 14.6 6.9 1.1 18.0 18.0 3.8 1.7 28.0 26.0 1.7
cm. 65.0 80.3 128.0 5.8 18.5 40.4 48.0 26.9 24.9 31.2 37.1 17.5 2.8 45.7 45.7 9.7 4.3 71.1 66.0 4.3
072 in. 25.6 31.6 54.4 2.3 7.3 15.9 18.9 10.6 1”
Swivel
1/2”
female
9.8 12.3 14.6 6.9 1.1 18.0 18.0 3.8 1.7 28.1 30.0 2.2
cm. 65.0 80.3 138.2 5.8 18.5 40.4 48.0 26.9 24.9 31.2 37.1 17.5 2.8 45.7 45.7 9.7 4.3 71.4 76.2 5.6
Condensate is 3/4” PVC female glue socket and is switchable from side to front 7/17/14
Unit shipped with 1” [25.4mm] return duct flanges and are suitable for duct connection.
Discharge flange is field installed and extends 1” [25.4mm] from cabinet
Water connections extend 1.2” [30.5mm] beyond front of cabinet.
The optional 1” filter rack (not shown) has the same return opening connection size as the duct flanges shown in the drawing. The filter rack extends
2.25”(57.1 mm) from the unit.
The optional 1” filter rack is suitable for duct connection.
The optional filter rails (not shown) extend 1.25” (31.75 mm) from cabinet.
Vertical Dimensional Data

19
3 SERIES 300A11 INSTALLATION MANUAL
D
E
FG
I
J
K
2 ft [61 cm]
Primary Service Access
2 ft [61 cm]
Alternate Service Access
Right return opposite side
FRONT VIEW
AB
N O L
M
H
C
SIDE DISCHARGE VIEW END VIEW
LOS
R
PQ
2.00 5.1
TOP VIEW
Mount (2) hanger brackets
as shown to allow access
to filter
1.90 (4.8 cm) 1.90 (4.8 cm)
Horizontal
Model
Overall Cabinet Water Connections
Electrical
Connections Discharge Connection
Duct Flange Installed
Return Connection
Return Duct Flanges
I
3/4”
cond
J
1/2”
cond
K
1/2”
cond
AB CDEFGH
Loop
Water
FPT
HWG
Sweat
(I.D.)
L* M N O* P Q R S
Width Depth Height In Out HWG
In
HWG
Out
Cond-
ensate
Power
Supply
Ext
Pump
Low
Votage
Supply
Height
Supply
Depth
Return
Depth
Return
Height
024 in. 22.5 53.0 19.3 2.3 5.3 13.8 16.8 0.8 1”
Swivel
1/2”
female
8.9 11.5 13.7 1.7 10.5 9.5 8.2 2.2 21.8 16.5 1.5
cm. 57.2 134.6 49.0 5.8 13.5 35.1 42.7 2.0 22.6 29.2 34.8 4.3 26.7 24.1 20.8 5.6 55.4 41.9 3.8
036 in. 22.5 63.0 19.3 2.3 7.3 13.5 16.5 0.8 1”
Swivel
1/2”
female
9.5 12.1 14.3 2.3 10.5 9.5 5.7 2.8 30.5 16.7 1.3
cm. 57.2 160.0 49.0 5.8 18.5 34.3 41.9 2.0 24.1 30.7 36.3 5.8 26.7 24.1 14.5 7.1 77.5 42.4 3.3
048-
060
in. 25.6 72.0 21.3 2.3 7.3 15.9 18.9 0.8 1”
Swivel
1/2”
female
9.5 12.1 14.3 1.9 13.6 13.2 5.0 2.9 35.5 18.6 1.3
cm. 65.0 182.9 54.1 5.8 18.5 40.4 48.0 2.0 24.1 30.7 36.3 4.8 34.5 33.5 12.7 7.4 90.2 47.2 3.3
072 in. 25.6 77.0 21.3 2.3 7.3 15.9 18.9 0.8 1”
Swivel
1/2”
female
9.5 12.1 14.3 1.9 13.6 13.2 5.0 2.8 40.4 18.7 1.5
cm. 65.0 195.6 54.1 5.8 18.5 40.4 48.0 2.0 24.1 30.7 36.3 4.8 34.5 33.5 12.7 7.1 102.6 47.5 3.8
* Dimensions shown are for left return side discharge other configurations shown in tables below 7/17/14
Condensate is 3/4” PVC female glue socket and is switchable from side to front
Unit shipped with 1” [25.4mm] return duct flanges suitable for duct connection.
Discharge flange is field installed and extends 1” [25.4mm] from cabinet
Water connections extend 1.2” [30.5mm] beyond front of cabinet.
The optional 1” filter rack (not shown) has the same return opening connection size as the duct flanges shown in the drawing. The filter rack
extends 2.25”(57.1 mm) from the unit.
The optional 1” filter rack is suitable for duct connection.
The optional filter rails (not shown) extend 1.25” (31.75 mm) from cabinet.
The 024 model is not field convertible changing from end to side discharge. It requires an additional discharge panel (not supplied).
024 model L O 036 model L O
Right Return End
Discharge
in 2.2 5.7 Right Return
End Discharge
in 6.5 6.6
cm 5.6 14.5 cm 16.5 16.8
Right Return Side
Discharge
in 6.9 8.3 Right Return
Side Discharge
in 2.3 5.7
cm 17.5 21.1 cm 5.8 14.5
Left Return End
Discharge
in 6.5 7.3 Left Return End
Discharge
in 6.5 6.6
cm 16.5 18.5 cm 16.5 16.8
048-060 model L O 072 model L O
Right Return
End Discharge
in 1.9 5.0 Right Return
End Discharge
in 1.9 5.0
cm 4.8 12.7 cm 4.8 12.7
Right Return
Side Discharge
in 5.7 5.0 Right Return
Side Discharge
in 5.7 5.0
cm 14.5 12.7 cm 14.5 12.7
Left Return End
Discharge
in 5.7 4.9 Left Return End
Discharge
in 5.7 5.0
cm 14.5 12.4 cm 14.5 12.7
Horizontal Dimensional Data

20
3 SERIES 300A11 INSTALLATION MANUAL
Model Dual Capacity
024 036 048 060 072
Compressor (1 each) Copeland Ultra Tech, Dual Capacity Scroll
Factory Charge R410a, oz [kg] Vertical 39 [1.05] 52 [1.47] 68 [1.93] 76 [2.15] 88 [2.49]
Factory Charge R410a, oz [kg] Horizontal 38 [1.08] 52 [1.47] 68 [1.93] 72 [2.04] 85 [2.41]
ECM Blower Motor & Blower
Blower Motor Type/Speeds ECM 5 Speed ECM
Blower Motor- hp [W] ECM 1/2 [373] 1/2 [373] 1 [746] 1 [746] 1 [746]
Blower Wheel Size (Dia x W), in. [mm] ECM 9 x 7
[229 x 178]
9 x 7
[229 x 178]
1 1 x 1 0
[279 x 254]
1 1 x 1 0
[279 x 254]
1 1 x 1 0
[279 x 254]
Coax and Water Piping
Water Connections Size - Swivel - in [mm] 1” [25.4] 1” [25.4] 1” [25.4] 1” [25.4] 1” [25.4]
HWG Connection Size - Female Sweat I.D. - in [mm] 1/2” [12.7] 1/2” [12.7] 1/2” [12.7] 1/2” [12.7] 1/2” [12.7]
Coax & Piping Water Volume - gal [l] .35 [1.3] .7 [2.6] .7 [2.6] 1.3 [4.9] 1.6 [6.1]
Vertical
Air Coil Dimensions (H x W), in. [mm] 1 9 x 2 0
[483 x 508]
2 4 x 2 0
[610 x 508]
2 8 x 2 5
[711 x 635]
2 8 x 2 5
[711 x 635]
3 2 x 2 5
[813 x 635]
Air Coil Total Face Area, ft2 [m2] 2.6 [0.245] 3.3 [0.310] 4.9 [0.452] 4.9 [0.452] 5.6 [0.516]
Air Coil Tube Size, in [mm] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5]
Air Coil Number of rows 3 3 3 3 3
Optional Filter - 1” [25mm] Pleated MERV8 Throwaway, in [mm] 20 x 24
[508 x 610]
20 x 24
[508 x 610]
28 x 30
[711 x 762]
28 x 30
[711 x 762]
30 x 32
[762 x 813]
Weight - Operating, lb [kg] 198 [90] 221 [100] 303 [137] 329 [149] 350 [159]
Weight - Packaged, lb [kg] 218 [99] 241 [109] 323 [147] 349 [158] 370 [168]
Horizontal
Air Coil Dimensions (H x W), in. [mm] 18 x 21
[457 x 533]
18 x 27
[457 x 686]
20 x 35
[508 x 889]
20 x 35
[508 x 889]
20 x 40
[508 x 1016]
Air Coil Total Face Area, ft2 [m2] 2.6 [.244] 3.4 [0.314] 4.9 [0.452] 4.9 [0.452] 5.6 [0.516]
Air Coil Tube Size, in [mm] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5]
Air Coil Number of rows 3 3 3 3 3
Optional Filter - 1” [25mm] Pleated MERV8 Throwaway, in [mm] 1 - 18 x 24
[457 x 610]
1 - 20 x 32
[508 x 813]
1 - 20 x 37
[508 x 940]
1 - 20 x 37
[508 x 940]
1 - 20 x 20
[508 x 508]
1 - 20 x 22
[508 x 559]
Weight - Operating, lb [kg] 228 [103] 250 [113] 325 [147] 358 [162] 369 [167]
Weight - Packaged, lb [kg] 248 [112] 270 [122] 345 [156] 378 [171] 389 [176]
9/11/2014
Physical Data
Aurora ‘Base’ Control
The Aurora ‘Base’ Control (ABC)
System is a complete residential
and commercial comfort
system that brings all aspects
of the HVAC system into one
cohesive module network. The
ABC features microprocessor
control and HP, LP, condensate
and freeze detection, over/
under voltage faults, along with communicating
thermostat capability for complete fault detection text at
the thermostat. Aurora uses the Modbus communication
protocol to communicate between modules. Each module
contains the logic to control all features that are connected
to the module. The Aurora ‘Base’ Control (ABC) has two
Modbus channels. The first channel is configured as a
master for connecting to devices such as a communicating
thermostat or other slave devices. The second channel is
configured as a slave for connecting the Aurora Interface
Diagnostics Tool (AID Tool).
The Aurora™ Control System