Water Furnace 5 Series User manual

IM2506WN 06/16
Installation Information
Water Piping Connections
Electrical Data
Startup Procedures
Preventive Maintenance
5 Series NSW Installation Manual
Geothermal Hydronic Heat Pump
500W11

5 SERIES NSW INSTALLATION MANUAL
Table of Contents
Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Water Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Field Connected Water Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
Potable Water Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11
Hydronic Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13
Accessories and Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-15
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16-17
Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18-21
External Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Converting to a Dedicated Cooling Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Unit Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-25
The Aurora Base Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26-30
The Aurora “Advanced” Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31-33
Reference Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Legend and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Pressure Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Flow Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Thermistor and Compressor Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Operating Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Antifreeze Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Troubleshooting Guideline for Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
HR Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-41
HE Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42-43
DHW HE Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Heating and Cooling Cycle Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Troubleshooting Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Revision Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

4
5 SERIES NSW INSTALLATION MANUAL
Model Nomenclature
All 5 Series NSW 500W11 product is safety listed under UL1995 thru ETL and
performance listed with AHRI in accordance with standard 13256-1. The 5 Series
500W11 is also ENERGY STAR
®
rated.
N S W 050 G 1 0 R C
3 4-6 7 8 9 10 11
Model
N –5 Series Hydronic
Heat Pump
Compressor Type
S –Single Speed
Cabinet Configuration
W –Water-to-Water
Unit Capacity
018, 025, 040, 050, 060, 075
Vintage
* - Factory Use Only
Voltage
1 –208-230/60/1
Hot Water Option1
0 – No Hot Water Generation
2 – Hot Water Generation
IntelliStart®
N –None
A –IntelliStart
Controls Option
A– Aurora™ Base Controls (ABC)
B – Aurora™ AdvanceGControls (ABC AXB)
C– Aurora™ Performance3
D – Aurora™ Performance3& Refrigeration
Future Option
0 –Standard
Future Option
S –Standard
Future Option
S –Standard
Water Coil Option2
C –Copper
N - CuproNickel
L –Source CuproNickel & Load Copper
S –Source Copper & Load CuproNickel
Reversible Option
H –Heating Only
R –Reversible
Rev.: 18 January 2016
S
12
NOTES: 1 – Available on 040, 050, 060, and 075 only. Hot water generator requires field installed external pump kit.
2 – NSW018 and NSW025 heating only models are available only with copper double wall vented load coax for potable water,
and are not designed to be converted to dedicated cooling units.
3 – Flow meter for Performance option is shipped with unit, and must be externally field installed.
21
S 0 A N
13 14 15 16

5
5 SERIES NSW INSTALLATION MANUAL
Safety Considerations
Installing and servicing air conditioning and heating
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. 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 quenching cloth for brazing operations. Have
fire extinguisher available for all brazing operations.
NOTE: Before installing, check voltage of unit(s) to ensure
proper voltage.
WARNING: Before performing service or
maintenance operations on the system, turn off
main power switches to the unit. Electrical shock
could cause serious personal injury.
Process Water Applications
For process water applications, it is recommended that
a secondary load heat exchanger be installed to prevent
corrosion to the unit’s primary coaxial coil. In situations
where scaling could be heavy or where biological growth
such as iron bacteria will be present, a closed loop system is
recommended. Over a period of time, ground water unit heat
exchanger coils may lose heat exchange capability due to a
buildup of mineral deposits. These can be cleaned only by
a qualified service mechanic as special pumping equipment
and solutions are required. Never use flexible hoses with a
smaller inside diameter than that of water connections.
Moving and Storage
Move units in the normal “Up” orientation as indicated by
the labels on the unit packaging. When the equipment
is received, all items should be carefully checked against
the bill of lading to ensure that all crates and cartons
have been received in good condition. Examine units for
shipping damage, removing unit packaging if necessary
to properly inspect unit. Units in question should also
be internally inspected. If any damage is observed, the
carrier should make the proper notation on delivery receipt
acknowledging the damage. Units are to be stored in a
location that provides adequate protection from dirt, debris
and moisture.
General Installation Information
WARNING: To avoid equipment damage, do not
leave the system filled in a building without heat
during cold weather, unless adequate freeze
protection levels of antifreeze are used. Heat
exchangers do not fully drain and will freeze
unless protected, causing permanent damage.
Unit Location
Provide sufficient room to make water and electrical
connections. If the unit is located in a confined space,
provisions must be made for unit servicing. Locate the
unit in an indoor area that allows easy removal of the
access panels and has enough space for service personnel
to perform maintenance or repair. These units are not
approved for outdoor installation and, therefore, must be
installed inside the structure being conditioned. Do not
locate units in areas subject to freezing conditions.
WARNING: Do not store or install units in
corrosive environments or in locations subject
to temperature or humidity extremes (e.g. attics,
garages, rooftops, etc.). Corrosive conditions and
high temperature or humidity can significantly
reduce performance, reliability, and service life.
Mounting 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.
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. Allow access to the front, back, and side access
panels for servicing.
Vibration Pad Mounting

6
5 SERIES NSW INSTALLATION MANUAL
General
Water-to-water heat pumps may be successfully applied
in a wide range of residential and light commercial
applications. It is the responsibility of the system designer
and installing contractor to ensure that acceptable water
quality is present and that all applicable codes have been
met in these installations. Failure to adhere to the guidelines
in the water quality table could result in loss of warranty.
Application
These heat pumps are not intended for direct coupling
to swimming pools and spas. If used for this type of
application, a secondary heat exchanger must be used.
Failure to supply a secondary heat exchanger for this
application will result in warranty exclusion for primary heat
exchanger corrosion or failure.
Water Treatment
Do not use untreated or improperly treated water.
Equipment damage may occur. The use of improperly
treated or untreated water in this equipment may result in
scaling, erosion, corrosion, algae or slime. The services of a
qualified water treatment specialist should be engaged to
determine what treatment, if any, is required. The product
warranty specifically excludes liability for corrosion,
erosion or deterioration of equipment.
Material Copper 90/10 Cupronickel 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
Corrosion
Hydrogen Sulfide Less than 0.5 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 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm
Chlorides Less than 20 ppm Less than 125 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
Ammonia Chloride Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm
Ammonia Nitrate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm
Ammonia Hydroxide Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm
Ammonia Sulfate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm
Total Dissolved Solids (TDS) Less than 1000 ppm 1000 - 1500 ppm 1000 - 1500 ppm
LSI Index +0.5 to -0.5 +0.5 to -0.5 +0.5 to -0.5
Iron Fouling
(Biological Growth)
Iron, FE2+ (Ferrous)
Bacterial Iron Potential < 0.2 ppm < 0.2 ppm < 0.2 ppm
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
NOTES: Grains = ppm divided by 17
mg/L is equivalent to ppm
2/22/12
Water Quality
The heat exchangers and water lines in the units are copper
or cupronickel tube. There may be other materials in the
building’s piping system that the designer may need to take
into consideration when deciding the parameters of the
water quality.
If an antifreeze or water treatment solution is to be used,
the designer should confirm it does not have a detrimental
effect on the materials in the system.
Contaminated Water
In applications where the water quality cannot be held to
prescribed limits, the use of a secondary or intermediate
heat exchanger is recommended to separate the unit from
the contaminated water.
The following table outlines the water quality guidelines
for unit heat exchangers. If these conditions are exceeded,
a secondary heat exchanger is required. Failure to supply
a secondary heat exchanger where needed will result in a
warranty exclusion for primary heat exchanger corrosion
or failure.
WARNING: Must have intermediate heat
exchanger when used in pool and spa
applications.
Water Quality Guidelines

7
5 SERIES NSW INSTALLATION MANUAL
The proper water flow must be delivered to each unit
whenever the unit heats or cools. To assure proper flow,
the use of pressure/temperature ports is recommended
to determine the flow rate. These ports should be located
adjacent to the supply and return 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 (See Pressure Drop Table for water
flow and pressure drop information). Normally about 3 GPM
flow rate per ton of cooling capacity (2.25 GPM per ton
minimum) is needed. Both source as well as load fluid piping
must be at least as large as the unit connections on the heat
pump (larger on long runs).
Never use flexible hoses of a smaller inside diameter than
that of the water connection on the unit and limit hose length
to 10 ft. per connection. Check carefully for water leaks.
CAUTION: Water piping exposed to outside
temperature may be subject to freezing.
General
Each unit is equipped with captive FPT water connections
to eliminate ‘egg-shaping’ from use of a backup wrench.
For making the water connections to the unit, a Teflon tape
thread sealant is recommended to minimize internal fouling
of the piping. Do not over tighten connections. All supply and
return water piping should be insulated to prevent excess
condensation from forming on the water lines.
NOTE: Units are factory run-tested using propylene
glycol. Prior to connecting piping to unit, thoroughly flush
heat exchangers.
The piping installation should provide service personnel with
the ability to measure water temperatures and pressures.
The water lines should be routed so as not to interfere with
access to the unit. The use of a short length of high pressure
hose with a swivel type fitting may simplify the connections
and prevent vibration. Optional stainless steel hose kits are
available as an accessory item.
Before final connection to the unit, the supply and return
hose kits must be connected, and the system flushed
to remove dirt, piping chips and other foreign material.
Normally, a combination balancing and close-off (ball) valve
is installed at the return, and a rated gate or ball valve is
installed at the supply. The return valve can be adjusted to
obtain the proper water flow. The valves allow the unit to be
removed for servicing.
Field Connected Water Piping
Line Voltage
Disconnect
Load Liquid
Connections
Water Out
Water In
Rubber Bladder
Expansion Tank
Solenoid
Valve
Flow Regulator Valve
Shut-off Valve
(to isolate solenoid
valve while acid
flushing)
Boiler Drains for
HX Flushing
Shut-off
Valve
Vibration Absorbing
Mesh or Air Pad
P/T Plugs
NOTE: Valves and boiler drains must be installed
so the heat exchanger can be acid flushed.
Typical Open Loop Installation

8
5 SERIES NSW INSTALLATION MANUAL
Open Loop Well Water Systems
Always maintain water pressure in the heat exchanger by
placing water control valves at the outlet of the unit. Use
a closed bladder type expansion tank to minimize mineral
deposits. Ensure proper water flow through the unit by
checking pressure drop across the heat exchanger and
comparing it to the figures in the pressure drop table.
Normally, about 2 GPM flow rate per ton of cooling capacity
is needed in open loop systems, (1.5 GPM per ton minimum if
entering source temperature is above 50°F [10°C].
Some water control valves draw their power directly from
the unit’s 24V transformer and can overload and possibly
burn out the transformer. Check total VA draw of the water
valve(s) and ensure it is under 40 VA.
Discharge water from a heat pump can be disposed of in
various ways depending on local building codes (i.e. recharge
well, storm sewer, drain field, adjacent stream or pond,
etc.). Most local codes restrict the use of sanitary sewer for
disposal. Consult your local building and zoning departments
to ensure compliance in your area. Figure 9b: Open Loop Solenoid Valve Connection Option
Typical slow operating external 24V water solenoid valve
(type V100FPT) wiring.
Figure 9a: Open Loop Solenoid Valve Connection Option
Typical quick operating external 24V water solenoid valve
(type PPV100 or BPV100) wiring.
NOTE: SW2-4 and SW2-5 should be “OFF” to cycle with
the compressor.
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 (V100FPT) water valve.
C
R
Acc Com
ACC NC
Acc NO
C
W/Y
V Valve ABC Board
Field Connected Water Piping cont.

9
5 SERIES NSW INSTALLATION MANUAL
Field Connected Water Piping cont.
Earth Coupled Systems with Flow Center
Once piping is completed between the unit, flow center
and the earth loop, final purging and charging of the loop
is needed. A flush cart (at least a 1.5 HP or 1.12 kW pump)
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. Maintain
the pH in the 7.6-8.2 range for final charging.
Flush the system adequately to remove as much air as
possible. Then, pressurize the loop to a static pressure of
50-75 psi [345-517 kPa]. This is normally adequate for good
system operation. Ensure that the flow center provides
adequate flow through the unit by checking pressure drop
across the heat exchanger and by comparing it to the
figures shown in the Pressure Drop tables. Usually, 3 GPM/
ton [0.054 L/s/kW] L/s/kW or minimum 2.25 GPM/ton
[0.04 L/s/kW] of cooling capacity is needed in closed loop
earth-coupled applications
Typical Closed Loop Earth Coupled Installation
Line Voltage
Disconnect
Load Liquid
Connections
Vibration Absorbing
Mesh or Air Pad
P/T Plugs
Unit Connector Kits
with Insulation
Earth Coupled Loop
Piping with Insulation
Figure 8b: Primary/Secondary Hook-up
5 Series to
Electromechanical Units
To Electromechanical Unit
5 Series to
Envision Units
Envision Unit #2
5 Series Unit #1
with AXB Board
5 Series Unit #1
with AXB Board
5 Series Unit #1
with AXB Board
5 Series Unit #2
with AXB Board
5 Series to
5 Series Units
CS
VSSLOSLI OUTIN C C
VSSLOSLI OUTIN C C
With pump
wired to
Unit 2
With pump
wired to Unit 1
VSSLOSLI OUTIN C C
Shut
Down CC
SL1
In SL1 Out
With pump
wired to
Unit 1
With pump
wired to
Unit 2
VSSLOSLI OUTIN C C
Figure 8a: 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
NOTE: This feature is only available in the Aurora Advanced
Control package (AXB board), NOT the Aurora Base
Control (ABC).
When two units are connected to one loop pumping system,
pump control is automatically achieved by connecting the
SL terminals on connector P2 in both units with 2-wire
thermostat wire. These terminals are polarity dependant (see
Figure 8b). The loop pump(s) may be powered from either
unit, whichever is more convenient. If either unit calls, the loop
pump(s) will automatically start. The use of two units on one
flow center is generally limited to a total of 20 gpm capacity.
NOTE: 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.

10
5 SERIES NSW INSTALLATION MANUAL
Potable Water Systems
The 018 and 025 models can be equipped to provide
domestic hot water generation. An optional factory-
installed hot water generator coil may be provided with the
040, 050, 060, and 075 to assist with this process.
LOAD PUMP
HYDRONIC
LOAD
Source OUT
P/T PortsP/T Ports
Ball Valve
Dielectric
Unions
Dielectric
Unions
NOTES:
* A 30 psi pressure relief valve (Part No: SRV30) should be used in
hydronic applications.
** Vent valve or P/T port at highest point in return line prior to ball valve.
1-1/2 in.
FPT
Expansion
Tank
Air
Vent
Pressure
Gauge
30 psi
RELIEF VALVE
Air
Separator
FROM
HWG
TO
HWG
Back Flow Preventer /
Pressure Relief Valve
Source IN
5 Series
GEO
STORAGE
TANK
PUMP
HOT
(Piped in
series to
an electric
water heater)
COLD
DOMESTIC
Dip Tube
Ball Valve
Vent Valve/
P/T Port**
Suggested Domestic Water Heater Hookup

11
5 SERIES NSW INSTALLATION MANUAL
Hot Water Generator Connections
The heat reclaiming hot water generator coil is vented double-
wall copper construction and is suitable for potable water. 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 as shown below or
two 50-gallon water heaters connected in a series. A geo storage
tank should not be used in this application unless it is plumbed
in a series with an electric water heater. The geo storage tank
is equipped with a single 4500 Watt element and will not be
able to provide adequate water heating if used as a standalone
water heater. Electric water heaters are recommended. Make
sure all local electrical and plumbing codes are met for installing
a hot water generator. The unit is not supplied with an internal
circulator. A DPK5 kit will need to be purchased to connect to
the hot water generator. The DPK5 kit is supplied with installation
instructions, circulator, tank adaptor and temperature limit switch.
Be sure to burp (vent) the pump. Open the screw 2 turns only
in the end of the pump motor (if Grundfos®pumps are used)
to allow trapped air to be discharged and to ensure the motor
housing has been flooded.
Potable Water Systems cont.
Alternate Hot Water Installation with
Direct Coupling to a Double Wall Unit
P/T PortsP/T Ports
Ball Valve
Dielectric
Unions
Dielectric
Unions
5 Series
NSW018 or NSW025 (Heating Only)
with Double Wall Load Coax
WaterFurnace
GEOTANK
1-1/2˝
FPT
Ball Valve
HOT COLD
LOOP FIELD
FLOW CENTER
NOTES:
1) Unions and valves must be installed so that acid flushing
of the heat exchanger is possible.
2)
Make sure there is not a check valve in the diptube of
the tank.

12
5 SERIES NSW INSTALLATION MANUAL
Hydronic Section
General guidelines are shown below for component
selection and design/installation criteria for the piping
system. Local codes supersede any recommendations in
this manual.
Shut Off/Flow Regulation Valves
Use full port ball valves or gate valves for component
isolation. If valves are going to be used frequently, ball
valves are recommended. Globe valves are designed for flow
regulation. Always install globe valves in the correct direction
(fluid should enter through the lower body chamber).
Check valves
Swing check valves must be installed in the horizontal
position with the bonnet of the valve upright. Spring check
valves can be mounted in any position. A flow check valve
is required to prevent thermo-siphoning (or gravity flow)
when the circulator pump is off or when there are two
circulators on the same system.
Storage (Buffer) Tank
A buffer tank is required for all hydronic heating systems
using 5 Series heat pumps. The tank should be sized
to provide 2 gallons of storage capacity for every one
thousand Btuh’s of nominal heat pump capacity.
Pressure Relief Valve
Most codes require the use of a pressure relief valve if a
closed loop heat source can be isolated by valves. Even
if local code does not require this device, WaterFurnace
recommends its installation. If the pressure relief valve in
the buffer tank is not already rated at 30 psi (207 kPa)
maximum pressure, one must be installed. The pressure
relief valve should be tested at start up for operation. Note
that the waste pipe must be at least the same diameter
as the valve outlet (never reduce), and valves may not be
added to this pipe. The bottom of the pipe must terminate
at least 6” (15 cm) above the floor. If the piping is connected
to a drain, there must be an air gap.
Backflow Prevention Check Valves
Most codes require backflow prevention check valves.
Note that a single check valve is not equal to a backflow
prevention check valve. Even if local code does not require
this device, WaterFurnace recommends its installation. This
is particularly important if the system will use antifreeze.
Pressure Reducing Valves or Feed Water Valves
This valve lowers the pressure from the make-up water line
to the system. Most are adjustable and directional. A “fast
fill” valve is required for initial filling of the system. Some
have screens, which must be cleaned after the initial filling.
If there is a restriction in the screen, the system could go to
0 psi (0 kPa), potentially causing pumps(s) failure. A valve
should be installed on each side of the pressure reducing
valve for servicing. Both valves should have tags reading
“Do not shut this valve under normal operation – service
valve only.”
Expansion Tanks
Expansion tanks are required on hydronic systems to help
absorb the pressure swings as the temperature in the
system fluctuates.
Elbows/Tees
Long radius elbows or two 45° elbows will lower pressure
drop. Standard tees have a greater restriction on the “T”
portion than tees designed with angled outlet ports.
Antifreeze
Antifreeze is required if any of the piping system is located
in areas subject to freezing.
Dielectric Unions
Dielectric unions are recommended whenever connecting
two dissimilar metals to one and other to prevent electro-
galvanic corrosion.
When using the various types of hydronic heat distribution
systems, the temperature limits of the geothermal system
must be a major consideration. In new construction, the
distribution system can easily be designed with the
temperature limits in mind. In retrofits, care must be
taken to address the operating temperature limits of the
existing distribution system. The maximum storage tank
temperature for the 5 Series 500W11 is 130°F (54.4°C).
Typical in floor radiant systems require much lower
temperatures, typically 100°-115°F, which is ideal for the 5
Series NSW.

13
5 SERIES NSW INSTALLATION MANUAL
Hydronic Section cont.
If using a Geothermal Storage tank there will be two red
wires exiting out of the top of the tank. These red wries
extend internally down to the thermistor/tank thermostat
section of the tank. Remove the bottom tank cover to expose
the red wires as well as the yellow tank thermistor wires.
HydroZone
If using HydroZone control, connect the two red wires to
the two yellow wires using wire nuts. Next, connect the two
red wires from the top of the Geothermal Storage tank to
“TS” and “GND” on the HydroZone. The “OAT” and “GND”
terminals on the HydroZone are used for an outdoor air
sensor.
HydroStat
If using HydroStat control, connect the two red wires to the
yellow wires using wire nuts. Next, connect the two red wires
from the top of the Geothermal Storage tank to “TS” and
“GND” on the HydroStat. The “OAT” and “GND” terminals
on the HydroStat are used to connect the controller to the
ELWT (Entering Load Water Temperature) well point sensor.
This sensor is located on the load side entering water line
inside the unit.
For other field installed controllers, these two red wires
will need wired to the appropriate sensor input terminals.
Another option for connection is to connect the thermostat
on the Geothermal Storage tank directly to “R” and “Y1” on
the ABC board.
LOAD PUMP
HYDRONIC
LOAD
Source OUT
P/T PortsP/T Ports
Ball Valve
Dielectric
Unions
Dielectric
Unions
NOTES:
* A 30 psi pressure relief valve (Part No: SRV30) should be used in
hydronic applications.
** Vent valve or P/T port at highest point in return line prior to ball valve.
1-1/2 in.
FPT
Expansion
Tank
Air
Vent
Pressure
Gauge
30 psi
RELIEF VALVE
Air
Separator
FROM
HWG
TO
HWG
Back Flow Preventer /
Pressure Relief Valve
Source IN
5 Series
GEO
STORAGE
TANK
PUMP
HOT
(Piped in
series to
an electric
water heater)
COLD
DOMESTIC
Dip Tube
Ball Valve
Vent Valve/
P/T Port**
Adequate rate of flow (GPM) is very important to system
performance and long term reliability. Follow the guidelines
for recommended flow in the recommendations table.
Combination
Unit
Geothermal Storage Tank Thermostat and Thermistor
Thermistor Wires Connected to TS and GND on
HydroZone Controller.
Water To
Water

14
5 SERIES NSW INSTALLATION MANUAL
Accessories and Options
Earth Loop Pump Kit (Field Installed)
A specially designed one or two-pump module provides all
liquid flow, fill and connection requirements for independent
single unit systems (230/60/1 only). The one-pump module
is capable of 20 feet of head at 16.0 GPM, while the two-
pump module is capable of 40 feet of head at 16.0 GPM.
Hot Water Generator (Factory Installed, 040, 050,
060, and 075 Only)
An optional heat reclaiming hot water generator coil
constructed of vented double-wall copper construction
suitable for potable water is available. The coil is factory
mounted inside the cabinet. A DPK5 pump kit is required
(field installed), which includes a HWG tank connection and
a temperature limit pump shutoff.
Load-side Pump Kit (Field Installed)
Four (4) load pump kits are available to provide all liquid flow
requirements for independent single unit systems (230/60/1
only). WaterFurnace part number 24S516-10 (Grundfos
UPS15-42RU) is a composite body pump. EWPK2 (Grundfos
UP26-64BF) is a bronze body pump. Bronze or composite
body pumps should be used when water conditions exist that
are not compatible with cast iron or for applications such as
domestic water heating. WaterFurnace part number EWPK1 (1”
FPT flange) and EWPK3 (1 1⁄4” FPT flange) come with a cast
iron body pump (Grundfos UP26-99F) that can be used for
hydronic heating applications.
Calculate the system pressure drop then refer to the pump
curves to select the proper pump. All four of the WaterFurnace
pump kits can be used for hydronic heating applications as long
as they meet the flow requirements. If the flow requirements
are outside the pump curve, an alternate pump will need to be
obtained to maintain the necessary flow.
IntelliStart®
The optional IntelliStart single phase soft starter will reduce
the normal start current (LRA) by 60-70%. This allows the
heat pump to go off-grid. Using IntelliStart also provides a
substantial reduction in light flicker, reduces start-up noise,
and improves the compressor’s start behavior. IntelliStart is
available in a field retrofit kit (WaterFurnace part number
IS60RKL or IS60RKS) or as a factory installed option.
Water Connection Kits (Field Installed)
Water connection kits are available to facilitate loop side
and load side water connections.
• MA4FPT - Forged brass 1” MPT x 1” FPT square street
elbow with P/T plug for 018-040 water side connections
• MA5FPT - Forged brass 1.25” MPT x 1.25” FPT square
street elbow with P/T plug for 050-075 water side
connections
• WFI-HKM-125-24-MO - 1 inch x 24 inch stainless steel
braided hose kit
• WFI-HKM-100-24-MO - 1 1⁄4 inch x 24 inch stainless
steel braided hose kit
NOTE: Never use piping smaller than 1 inch. Limit length of
pipe to 50 feet or less.
Type L Copper Tube
GPM 3/4 1 1-1/4 1-1/2 2
21.5
33.2
45.5 1.4
58.5 2.1
62.9 1.1
73.9 1.4
85.0 1.8
96.1 2.3 0.9
10 7.5 2.8 1.1
12 3.9 1.6
14 5.2 2.1
16 6.6 2.7
18 8.2 3.4
20 10.0 4.1 1.1
22 5.0 1.3
25 6.3 1.6
30 2.2
35 2.9
40 3.8
45 4.7
50 5.7
Type L Copper Pressure Loss
Ft of Hd per 100 ft
NOTE: Standard piping practice limits pressure drop to 4
feet of hd per 100 feet in 2 inch and larger pipe.
UP26-64BF and UP26-99F Single and Two Pump Curve
UPS15-42RU Three-Speed Pump Curve
0
10
20
30
40
50
60
70
0 5 10 15 20 25 30
Feet of Head
GPM
UP26-64BF & UP26-99F Single and Two Pump
UP26-99F (2 Pumps)
UP26-64BF (2 Pumps)
UP26-99F (1 Pump)
UP26-64BF (1 Pump)
0
2
4
6
8
10
12
14
16
0 2 4 6 8 10 12 14 16
Feet of Head
GPM
UPS15-42RU 3-Speed Pump
UPS15-42RU (High)
UPS15-42RU (Med)
UPS15-42RU (Low)

15
5 SERIES NSW INSTALLATION MANUAL
3
0
°
3
0
°
To Geo 59˝ Dip Tube
w/1˝ x 3˝ Nipple
Approx. 1˝
T & P
VALVE
From Geo
1˝ x 3˝ Nipple
PRIMARY ANODE
39˝ - 80 Gallon
42˝ - 119 Gallon
3/4˝ COLD INLET
52˝ DIP TUBE
3/4˝ HOT OUTLET
w/14˝ SECONDARY ANODE
HEIGHT
Optional “To Geo”
Connection Shipped with
1-1/2˝ Pipe Plug Installed
Element Location
Red Wire attached
to Thermistor or Thermostat
for Top Exit
Lower Sensor Thermistor (12P541-01)
to be used by Water to Water Units
Optional “From Geo” Connection
Shipped with 1-1/2˝ Pipe Plug Installed
DIAMETER
8˝
5-1/4˝
35-3/4˝
Lower Thermostat to be used
with Combination Forced Air/Hydronic
DRAIN VALVE
MODEL
NUMBER
GALLON
CAPACITY
ELEMENT
WATTAGE
(240 VOLT)
NUMBER
OF
ELEMENTS
R
VALUE
DIMENSIONS IN INCHES APPROX.
SHIPPING
WEIGHT (lbs.)
HEIGHT DIAMETER
GEO-STORAGE-80 80 4500 1 16 63-1/4 24 204
GEO-STORAGE-120 119 4500 1 16 63-1/4 28 311
Accessories and Options cont.
Geo Storage Tank Dimensions

16
5 SERIES NSW INSTALLATION MANUAL
Load Pump Power Block
Transformer
Run Capacitor
Ground Lug
Load Pump Relay
Compressor Contactor
Circuit Breakers
Source Pump Power Block
Aurora Base Control
Board (ABC)
Aurora Advanced
Control Board (AXB)
Electrical Data
Unit
Model
Rated
Voltage
Voltage
Min/Max
Compressor Load
Pump
Source
Pump
Total Unit
FLA
Min Ckt
Amp
Maximum
Fuse/HACR
RLA LRA LRA*
018 208-230/60/1 187/253 9.0 48.0 17 1.8 5.4 16.2 18.5 25
025 208-230/60/1 187/253 14.1 73.0 25.5 1.8 5.4 21.3 24.8 35
040 208-230/60/1 187/253 20.0 115.0 40.3 1.8 5.4 27.2 32.2 50
050 208-230/60/1 187/253 26.4 134.0 46.9 1.8 5.4 33.6 40.2 60
060 208-230/60/1 187/253 30.1 145.0 50.8 1.8 5.4 37.3 44.8 70
075 208-230/60/1 187/253 26.9 145.0 50.8 1.8 5.4 34.1 40.8 60
Notes:All fuses type “D” time delay (or HACR circuit breaker in USA). 1/15/2015
Source pump amps shown are for up to a 1/2 HP pump
Load pump amps shown are for small circulators.
*With optional IntelliStart
Optional IntelliStart
Control Box

17
5 SERIES NSW INSTALLATION MANUAL
Electrical Data cont.
208 Volt Operation
All 208-230 volt units are factory wired for 230 volt
operation. To convert the unit from a 230V unit to a 208V
unit follow these steps:
1. Remove the blue transformer wire from terminal L2 on
the compressor contactor and secure the wire taking
care to insulate the end with electrical tape.
2. Locate the red transformer wire and connect it to the L2
terminal of the compressor contactor.
Electrical
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. Refer to
the Electrical Data table for wire and fuse or circuit breaker
sizing information.
Flow Center Pump Connection (208-230/60/1)
Two circuit breaker protected internal terminal block
connections with 1/4-inch spade connectors are provided;
one for the load pump and one for the source pump. The
source pump directly connects to the PB2 terminal block
for the source pump. The load pump directly connects to
the PB1 terminal block for the load pump.
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 for normally closed, and #2 and #3
for normally open on P2.
A second configurable accessory relay is provided on the
AXB board, if installed. When powering high VA draw
components such as electronic air cleaners or V type open
loop water valves, R should be taken ‘pre-fuse’ from the ‘R’
quick connect on the ABC board and not the ‘post-fuse’ ‘R’
terminal on the thermostat connection. If not, blown ABC
fuses might result.
Control Box Relocation
The control box can be installed on the rear of the unit. To
relocate the control box, follow the procedures below.
1. Remove all power sources to the unit.
2. Remove the unit’s top panel.
3. Cut all plastic wire ties to the following:
a) High pressure switch (black wires)
b) Low pressure switch (blue wires)
c) Freeze sensing and Thermistors
d) Compressor wires
4. Remove the four screws from the control box.
5. Relocate the control box to opposite end of the unit.
6. Using the screws removed in step 4 above, reattach the
control box.
7. Move the RS485 Keystone Coupler to the opening on the
back side of the unit.
8. Secure all wires so they do not come in contact with
refrigerant lines.
9. Replace the top of the unit.
10.Replace both access panels.
11. Reapply power sources.

18
5 SERIES NSW INSTALLATION MANUAL
Wiring Schematics
Black
Blue
240V
CC
T2 T1
Compressor
C
R
S
Blue
L1L2
Tan(10)
Capacitor
CC2
Factory
Fault
ALG
ALM
LS
ES
ACC c
Status
AURORA BASE
CONTROL™
RV – K1
CC2
CC – K2
CC Hi – K3
Fan – K4
Alarm – K5
Acc – K6
ACC no
ACC nc
O/B
C R
LO
G
Y1 Y2
W
DH
3A-Fuse
O/B
C R
LO
G
Y1 Y2
W
DH
LO
G
HI
CCG
CC
FG
F
R
HP
HP
LP
FP2
FP2
FP1
REV
REV
CFM
PWM
ECM PWM
Factory
Factory Fan Connection
RR
CC
C
C
R
(-)
(+)
RS 485
EH2
C
EH1
C
CO
(+)
(-)
R
C
RS485 Exp Factory
Com1
Com2
Config
G
G
G
YR
SW1 Test
FP1 – 15oF/30oF
JW2 - Alarm
P11
P5
P2 P1
P8
P7
P9
P6
P3
SW2
P13
P4 FP2 – 15oF/30oF
RV – B/O
ACC – Dip 4
ACC – Dip 5
CC – Dual/Single
L – Pulse/Continuous
Reheat/Normal
Factory Use
Field ConnectionsField Connections
C
LP
FP1
F
CC
G
Y1
1
2
3
4
5
6
7
8
Off On
N/A
RS485 NET
EH1
LED1 LED2
LED3
LED4
LED5
5A Circuit Breaker
5A Circuit Breaker
1
2
PB2
2
1
208-230/60/1
Pump
G
Pump
Source Pump
1/2 hp Total
2
PB1
2
1
208-230/60/1 G
Pump
Load Pump
5A Circuit Breaker
5A Circuit Breaker
OAT Sensor
GeoTank Sensor
OAT OAT
Tank Tank Red (GND)
Red (TS)
Brown (OAT)
Brown (GND)
HydroZone
Controller
GND
TS
OAT
GND
B+
A+
HZC
R
C
O/B
P
V
C1
C2
C3
C4
--/L
NOTE 2
Black
Red
/()
Violet/White (9) Black/White (2)
/()
Violet (7)
Violet (6)
Black (4)
Black (5)
LPR
LPR
NO
NC
COM
Black/White (3)
24 VDC
Current Transducer (CT)
Thermistor
Light emitting diode - Green
Relay coil
Capacitor w/ bleed resistor
Switch - Condensate overflow
Switch - High pressure
Switch - Low pressure
Polarized connector
Factory Low voltage wiring
Factory Line voltage wiring
Field low voltage wiring
Field line voltage wiring
Optional block
DC Voltage PCB traces
Junction
Quick connect terminal
Wire nut
Field wire lug
Ground
Fuse
CC -
CO -
K6 -
K5 -
FP -
HP -
LP -
PB1, PB2 -
RV -
SW1 -
SW1 -
SW2 -
Compressor Contactor
Condensate overflow sensor
DHW pump relay
Loop pump relay
Freeze Protection
High pressure switch
Low pressure switch
Power blocks
Reversing Valve coil
DIP package 5 position AXB
TEST MODE ABC Board
DIP package 8 position ABC Board
Legend
Relay Contacts-
N.O., N.C.
G
T
132
P
L1
Breaker
Vapor Injection Valve
VIV -
LPR - Load Pump Relay OAT - Outdoor Air Temperature
Field Installed Item LPR
NO
NC
COM
Black/White (3)
CC-T1
NOTE 5
Geothermal Tank
Thermostat
Y1
NOTE 6
R
Aurora
Board
NOTE 7
Aurora Control - 208-230/60/1

19
5 SERIES NSW INSTALLATION MANUAL
Wiring Schematics cont.
Transformer
24V
CC
HP
Black
Black
Blue
Blue
LP
T
Yellow
Yellow
FP1
Black(15)
Violet(14)
Green(11)
Black/White
Yellow
Red
208V
G
208-230/60/1
Unit Power Supply
Event Normal Mode Test Mode
Random Start Delay
Compressor On Delay
Compressor Minimum On Time
Compressor Short Cycle Delay
Fault Recognition Delay – High Pressure
Start-Up Bypass – Low Pressure
Fault Recognition Delay – Low Pressure
Start-Up Bypass – Low Water Coil Limit
Fault Recognition Delay – Low Water Coil Limit
Fault Recognition Delay – Condensate Overflow
HydroZone Call Recognition Time
Less than 1 second
5 to 80 seconds 1 second
5 seconds < 1 second
Less than 1 second
2 minutes 5 seconds
4 minutes 15 seconds
2 minutes
2 minutes
30 seconds
30 seconds 30 seconds
30 seconds
30 seconds
30 seconds
30 seconds
30 seconds
2 seconds 2 seconds
Aurora Timing Events
AID Tool
DESCRIPTION SW2-4 SW2-5
Cycle with Blower ON ON
Cycle with Compressor OFF OFF
Water Valve Slow Opening ON OFF
Cycle with Comm. T-stat Hum Cmd OFF ON
ABC SW2 Accessory Relay
Aurora LED Flash Codes
Status LED (LED3, Green)
Status LED (LED1, Green)
Configuration LED (LED2, Yellow)
Fault LED (LED3, Red)
Random Start Delay (Alternating Colors)
Fast Flash
Fast Flash
Fast Flash
1 second on and 1 second off
100 milliseconds on and 100 milliseconds off
100 milliseconds on and 400 milliseconds off with a 2 second pause before repeating
Slow Flash
Fast Flash
Flash Code
Normal Mode
Control is Non-Functional
Test Mode
Lockout Active
Dehumidification Mode
Future Use
Future Use
Load Shed
ESD
OFF
ON
Slow Flash
Fast Flash
Flash Code 2
Flash Code 3
Flash Code 6
Flash Code 4
Flash Code 5
Future Use Flash Code 7
Configuration LED (LED2, Yellow)
No Software Overide OFF
DIP Switch Overide Slow Flash
Fault LED (LED1, Red)
Normal Mode
Input Fault Lockout
High Pressure Lockout
Low Pressure Lockout
Future Use
Freeze Detection – FP1
Reserved
Condensate Overflow Lockout
Over/Under Voltage Shutdown
Future Use
Future Use
FP1 and FP2 Sensor Error
Flash Code 1
OFF
Flash Code 2
Flash Code 3
Flash Code 4
Flash Code 5
Flash Code 8
Flash Code 6
Flash Code 7
Flash Code 9
Flash Code 10
Flash Code 11
CFM
P13
P4
SW1
P5
JW2
P9
LO
O/B
Y2
W
DH
P8 P7
RS485 NET RS485 NET
P6
RS485 EXP
P3
SW2
On
Future Use
L Output Type
CC – Dual/Single
Acc – Dip 5
Acc – Dip 4
RV – B/O
FP2 – 15°F/30°F
FP1 – 15°F/30°F
Com1
LED5
Com2
LED5
Test Mode
F1-3A
P1
C
PWM
1
2
3
4
5
6
7
8
ALM
ALG
ACC COM
ACC NO
ACC NC
R
C
G
Y1
EH2CEH1
C
CO
CR-+C R-+
Off
Fault
LED1
R
Status
LED3
Config
LED2
CC2 CC FCR F FG CC CCGCC2
HI CC2 LO CC2 GREVREV FP1 FP1 FP2 FP2 LPS LPS HPSHPS
Aurora Base Control
(ABC)
K1-RV Relay
K2-CC Relay
K3-CC2 Relay
K4-Fan Relay
K5-Alarm
Relay
K6-Acc
Relay
F
R
C
CCGY1
C
R
ES
LS
P2
EH1
Y
GG
G
NOTE 1
Blue
Blue
Not Used
Orange
Orange
T
Yellow
Yellow
FP2
RV
RV
NOTE 3
Water Valve Slow Open Delay 90 seconds 90 seconds
NOTE 4
T2 T1
Compressor
C
R
S
Blue
Tan(6)
Cap
Run Winding
Active
Start
Common
IntelliStart
Red
Pink
Black
Blue
CC
T2 T1
L1L2 Softstart Option
Black
Notes
1 - Switch blue and red wires for 208V operation.
2 – HydroZone controller is an optional field installed accessory.
3 – Reversing Valve wires not installed on heating only option
4 – FP2 is replaced with a resistor on heating only option
5 – Move black/white(3) wire when HydroZone is not used for pump control
6 – When Geothermal Storage Tank is wired directly to the Aurora Board
7 – HydroZone Controller may be labeled - - or L.
8 – HydroStat Communicating Controller is an optional field installed accessory.
Geo-Tank Sensor
ELWT: Entering Load Water Temperature Sensor
ELWT
ELWT
Geo-Tank
Geo-Tank Red (GND)
Red (TS)
Brown (OAT)
Brown (GND)
HydroStat
Controller
GND
TS
OAT
GND
-
+
HSC
W
R
C
P
NOTE 8
LPR 24 VDC
Aurora Control - 208-230/60/1

20
5 SERIES NSW INSTALLATION MANUAL
Wiring Schematics - cont.
Aurora Advanced Control - 208-230/60/1
Black
Blue
240V
CC
T2 T1
Compressor
C
R
S
Blue
L1L2
Tan(10)
Capacitor
HW
HW
Black
Black
Orange
Orange
SCT
P8
MOTOR
P6
RS485
P7
ZONE
P9
ABC
STEPPER ANA ACC2 DH DIV
NO
COM
K6
NO
COM
K5
C
L1 L1 L2 L2
P12 P10 P5 P11
C R
(-)
(+)
C R
(-)
(+)
C R
(-)
(+)
P4 P2
K1
K2K3
HA2 HA1 SGI LOOP VS DATA VS PUMP PUMP SLAVE
P3
R
V+
C R
TX
RX
+5
P14
LLT
P1 LATFLOWLWTEWT
CT2
4 3
CT2
4 3 CT1
2 1
CT1
21
Status
G
DISCH
P16
P17 P18 P15
(Aurora Expansion Board)
AXB™
SW1
Modbus Add. ID
Future Use 1
2
3
4
5
ONOFF
Future Use
Acc 2 – Dip 4
Acc 2 – Dip 5
CS+5 CS+5 2 1C CIN
OUT
T
Suction
Line Temp
5A Circuit Breaker
5A Circuit Breaker
1
2
PB2
2
1
208-230/60/1
Pump
G
Pump
Ext Pump
1/2 hp Total
Blue
Blue
GND
OUT
5DC
1
2
3
SUC P
White
Red
Black
Suction
Pressure
Transducer
Pump Slave
Input/Output
Smart Grid
Home
Automation
Future Use
Accessory 2 Output
1
2
PB1
2
1
208-230/60/1 G
Pump
Load Pump
5A Circuit Breaker
5A Circuit Breaker
OAT Sensor
GeoTank Sensor
OAT OAT
Tank Tank
Red (GND)
Red (TS)
Brown (OAT)
Brown (GND)
HydroZone
Controller
GND
TS
OAT
GND
B+
A+
HZC
R
C
O/B
P
V
C1
C2
C3
C4
L
NOTE 2
Black
Red
White
White
Not Used
Violet/White (8)
Violet/White (9) Black/White (2)
Black/White (1)
Violet (7)
Violet (6)
Black (4)
Black (5)
Orange (12)
Brown (13)
LPR
LPR
NO
NC
COM
Black/White (3)
24 VDC
LPR
NO
NC
COM
Black/White (3)
CC-T1
NOTE 5
Geothermal Tank
Thermostat
Y1
NOTE 6
R
Aurora
Board
Compressor
Common CT
Capacitor
CT
Blue
Blue
Red
Red
Pink T
Pink
HW
HW
HOT WATER
OPTION
T
T
T
TBrown
Brown
Black
Red
GND
OUT
5DC
1
2
3
White
REFRIGERATION
MONITORING
PERFORMANCE
MONITORING
White
White
Purple
Purple
Gray
Gray
PRESSURE
TRANSDUCER
REFRIGERATION
MONITORING
GND
OUT
5DC
3
2
4
White
3
2
4
Green
Brown
Field Installed Flow Meter
NOTE 8
Notes
1 - Switch blue and red wires for 208V operation.
2 – HydroZone controller is an optional field installed accessory.
3 – Reversing Valve wires not installed on heating only option
4 – FP2 is replaced with a resistor on heating only option
5 – Move black/white(3) wire when HydroZone is not used for pump control to
LPR-NC and CC-T1
6 – When Geothermal Storage Tank is wired directly to the Aurora Board
7 – Low voltage wiring is Class 2
8 – Flow Meter is sent with unit, but needs to be field installed outside the unit.
Auxiliary
Heat CT
Load
Pump CT
Black
Black
Brown
Brown
9 – HydroStat communicating controller is an optional field installed accessory.
Compressor
Common CT
Capacitor
CT