0 – None
2 – HWG Only w/o Pump (Vertical 018-072)
G – Hot Gas Bypass (015-072)
R – Hot Gas Reheat (015-072)
B – Hot Gas Bypass w/Hot Gas Reheat (015-072)
N – None
A – IntelliStart
E – IntelliStart and Disconnect
P – Phase Guard, No Disconnect
B – Phase Guard, Disconnect
D – No Phase Guard, Disconnect
Control Option
A – Aurora
E – Aurora UPC DDC Controller
F – Aurora UPC DDC Controller with LON
Water Control Option
N – None
R – Water Flow Regulator
V – 2-Way Valve
B – 2-Way Valve w/ Water Flow Regulator
Sound Kit Option
A – None
B – Sound Kit
Rev.: 24 April 2014D
1
®
Only
TM
Base Control (ABC)
TM
4
General Installation Information
ENVISION2 COMPACT INSTALLATION MANUAL
Safety Considerations
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.
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 flow 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
figure below).
Vertical Unit Mounting
2 in. PEX Foam
5
ENVISION2 COMPACT INSTALLATION MANUAL
Vertical Dimensional Data
Standard filter rails for
open return applications
Field installed
duct flange
Deluxe filter rack for
ductable return applications
A
RN
S
Q
AIR COIL SIDE
P
B
AIR COIL SIDE
F
4
3
FRONT
1.4 in (3.5 cm)
M
M
G
Top View - Right ReturnTop View - Left Return
A
N
FRONT
1.4 in (3.5 cm)
Air coil
Q
P
B
2' (61 cm)
G
Alternate
Service Access
4
3
F
Service Access Left Return
2' (61 cm)
ACCESS
PANEL
Isometric View - Left Return
(Right Return opposite side)
U
T
W
Air coil
Air coil
ACCESS
PANEL
C
1.6 in (4.1 cm)
Condensate 3/4 in
PVC glue socket
1.6 in (4.1 cm)
5
H
2
E
1
D
6
8
1 in (25.4 mm)
1/2" (12.7 mm)
J
L
Power supply
knockout
Low voltage
knockout
L
K
Front View - Right Return
ACCESS
PANEL
Condensate
3/4 in PVC
glue socket
1.6 in (4.1 cm)
8
7
5
2
1
Front View - Left Return
1.6 in
(4.1 cm)
H
E
D
V
C
6
ACCESS
J
8
L
PANEL
8
7
L
K
Right View - Right Return
Left View - Left Return
6
Vertical Dimensional Data cont.
ENVISION2 COMPACT INSTALLATION MANUAL
Overall Cabinet
Vertical
Models
009-012
015-018
024-030
036-038
042-049
060-072
009-012
015-018
024-030
036-038
042-049
060-072
Condensate is 3/4 in. PVC female glue socket and is switchable from side to front.
*Discharge fl ange is fi eld installed and extends 1 in. (25.4 mm) from top of cabinet.
**Vertical units shipped with standard 2 in. (fi eld adjustable to 1 in.) open application fi lter rack extending 2.2 in. from
unit and is not suitable for duct connection, for ductable return connection applications, order the deluxe 2 in. (fi eld
adjustable to 1 in.) duct collar/fi lter rack which extends 3.25 in. from the unit and is suitable for duct connections.
When using disconnect, do not use dimension L from
the standard vertical dimensional data. Use dimension
LL from the vertical disconnect dimensional data.
Vertical ModelsLL
009-012
015-018
024-030
036-038
042-049
060-064
070-072
Dimensions in inches [cm]3/16/12
17.8 [45.2]
14.3 [36.3]
15.3 [38.9]
14.3 [36.3]
14.3 [36.3]
14.3 [36.3]
External
Disconnect Located on this
Side for a Right Return
Disconnect
Location
Alternative
Power
Power
Location
Supply
LL
1.8 in.
[4.6 cm]
Vertical Shown in
Left Return Configuration
7
ENVISION2 COMPACT INSTALLATION MANUAL
Horizontal Dimensional Data
Right Return
Condensate
"X" PVC size
End Discharge
Deluxe filter rack option shown
H
2.3 in. [5.8 cm]
FILTER RACK
AIR COIL SIDE
2.1 in. [5.3 cm]
Right Return
End Discharge
N
BLOWER
OUTLET
A
Standard filter rails
1 in. [2.5 cm] knockout
0.5 in. [1.3 cm] knockout
Side Discharge
P
M
C
L
Front
AP
CMP
Service Access
2' (61 cm)
1.7 in.
[5.3 cm]
K
J
E
D
AP = Alternate Service Panel
BP = Blower Service Panel
CP = Control Access Panel
CMP = Compressor Service Panel
CP
AP
A
RR Front View
1.7
CP
AP
LR Front View
Legend
1.7
1.7 in.
[5.3 cm]
E
D
J
0.5 in. [1.3 cm]
knockout
1 in. [2.5 cm]
K
knockout
Standard filter rails
Front
AP
CMP
2' (61 cm)
Service Access
Side Discharge
Deluxe filter rack option shown
P
N
L
C
M
BLOWER
OUTLET
2.1 in. [5.3 cm]
Left Return
End Discharge
A
Left Return
Condensate
"X" PVC size
End Discharge
2.3 in.
[5.8 cm]
AIR COIL SIDE
FILTER RACK
H
BP
Front
P
N
L
M
Air Coil
BLOWER
OUTLET
Right Return Side Discharge
C
Right Return Side View
J
K
T
R
1.5 in. [3.8 cm]
AP
CMP
S
Left Return Side Discharge
Q
B
Left Return Side View
1.5 in. [3.8 cm]
0.5 in. [1.3 cm]
K
AP
CMP
FILTER RACK CONNECTIONFILTER RACK CONNECTION
B
J
SQ
R
Front
1 in. [2.5 cm]
knockout
0.5 in. [1.3 cm]
knockout
T
Deluxe filter
rack option
(shown)
knockout
Front
C
N
BLOWER
OUTLET
P
BP
M
L
Air Coil
Front
8
Horizontal Dimensional Data cont.
ENVISION2 COMPACT INSTALLATION MANUAL
Horizontal
Models
WidthDepthHeight*InOutCondensateWater FPTLow Voltage Power Supply
009-012
015-018
024-030
036-038
042-049
060-064
070-072
Horizontal
009-012
015-018
024-030
036-038
042-049
060-064
070-072
Horizontal units shipped with standard 2 in. (fi eld adjustable to 1 in.) open application fi lter rack extending 2.2 in. from unit and is
not suitable for duct connection, for ductable return connection applications, order the deluxe 2 in. (fi eld adjustable to 1 in.) fi lter
rail/fi lter rack which extends 3.25 in. from the unit and is suitable for duct connections.
When using disconnect, do not use dimension K from the
standard horizontal dimensional data. Use dimension KK from
the horizontal disconnect dimensional data.
Horizontal ModelsKK
009-012
015-018
024-030
036-038
042-049
060-064
070-072
Dimensions in inches [cm]3/16/12
8.2 [20.8]
9.2 [23.4]
9.2 [23.4]
11.2 [28.4]
10.2 [25.9]
11.2 [28.4]
10.2 [25.9]
Disconnect Located
on this Side for a
Left Return
9
2.1 in.
[5.3 cm]
Disconnect
Location
KK
Power Supply
Horizontal Shown in
Right Return Configuration
ENVISION2 COMPACT INSTALLATION MANUAL
Installing Horizontal Units
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.
NOTE: Horizontal units are normally suspended from a
ceiling by four (009-060 models) or five (070-072 models)
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 Hanger Bracket
Dimensions table. 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, install hanger brackets as illustrated
in the Hanger Bracket Locations section. The unit should
be pitched approximately 1/4 in. 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 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 in.
diameter since they may not be strong enough
to support the unit. The rods must be securely
anchored to the ceiling.
10
Hanger Bracket Locations
ENVISION2 COMPACT INSTALLATION MANUAL
H
D
Compressor
Section
B
E
NOTE: Model sizes 070-072 will be shipped with six (6) hanger brackets. Only five (5) hanger brackets will be used on the unit.
See the above illustration for the fifth hanger bracket location. All other models will use four (4) hanger brackets.
An air outlet collar is provided on vertical top flow 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.
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.
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.
All source water connections on commercial units are
fittings that accept a male pipe thread (MPT). Insert the
connectors by hand, then tighten the fitting with a wrench
to provide a leakproof joint. When connecting to an open
loop (groundwater) system, thread any copper MPT fitting
into the connector and tighten in the same manner as
described above.
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 in. 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.
Vent (if needed)
PVC tube stub
1/8 in. per foot
PVC tube stub
PVC coupling
1.5 in.
1.5 in.
On horizontal units, a PVC stub or stainless steel tube
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 fieldinstalled condensate piping.
Unit Pitch for DrainHorizontal Drain Connection (Composite Drain Pan)
1/2'' Pitch
Drain
12
Water Quality
ENVISION2 COMPACT INSTALLATION MANUAL
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
with extremely hard water, the owner should be informed
that the heat exchanger may require occasional flushing.
Failure to adhere to the guidelines in the water quality table
could result in loss of warranty.
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
AmmoniaLess than 2 ppmLess than 2 ppmLess than 20 ppm
Ammonia ChlorideLess than 0.5 ppmLess than 0.5 ppmLess than 0.5 ppm
Ammonia NitrateLess than 0.5 ppmLess than 0.5 ppmLess than 0.5 ppm
Ammonia HydroxideLess than 0.5 ppmLess than 0.5 ppmLess than 0.5 ppm
Ammonia SulfateLess than 0.5 ppmLess than 0.5 ppmLess than 0.5 ppm
Total Dissolved Solids (TDS)Less than 1000 ppm1000 - 1500 ppm1000 - 1500 ppm
LSI Index+0.5 to -0.5+0.5 to -0.5+0.5 to -0.5
Iron, FE
Bacterial Iron Potential
Iron Oxide
Suspended Solids
Threshold Velocity
(Fresh Water)
Less than 0.5 ppm (rotten egg
SulfatesLess than 125 ppmLess than 125 ppmLess than 200 ppm
2
+ (Ferrous)
smell appears at 0.5 ppm)
Less than 1 ppm, above this
level deposition will occur
Less than 10 ppm and filtered
for max. of 600 mic
7 - 97 - 97 - 9
(Total Hardness)
less than 350 ppm
< 0.2 ppm< 0.2 ppm< 0.2 ppm
< 6 ft/sec< 6 ft/sec< 6 ft/sec
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.
ron size
(Total Hardness)
less than 350 ppm
10 - 50 ppmLess than 1 ppm
Less than 1 ppm, above this
level deposition will occur
Less than 10 ppm and filtered
for max. of 600 micron size
(Total Hardness)
less than 350 ppm
Less than 1 ppm, above this
level deposition will occur
Less than 10 ppm and filtered
for max. of 600 micron size
2/22/12
System Cleaning and Flushing
Cleaning and Flushing
Prior to start up of any heat pump, the water circulating
system must be cleaned and flushed of all dirt and debris.
If the system is equipped with water shutoff valves, the
supply and return runouts must be connected together
at each unit location (This will prevent the introduction of
dirt into the unit, see Flushing with Water Shutoff Valve
Equipped Systems illustration). The system should be filled
at the water make-up connection with all air vents open.
After filling, vents should be closed.
The contractor should start the main circulator with the
pressure reducing valve makeup open. Vents should be
checked in sequence to bleed off any trapped air and to
verify circulation through all components of the system.
As water circulates through the system, the contractor
should check and repair any leaks found in the piping
system. Drain(s) at the lowest point(s) in the system should
Flushing with Water Shutoff Valve Equipped Systems
Return Runout
Supply Runout
Mains
Rubber Hose
Runouts Initially
Connected Together
13
ENVISION2 COMPACT INSTALLATION MANUAL
System Cleaning and Flushing cont.
be opened for initial flush and blowdown, making sure
water fill valves are set at the same rate. Check the pressure
gauge at the pump suction and manually adjust the makeup water valve to hold the same positive pressure both
before and after opening the drain valves. Flushing should
continue for at least two hours, or longer if required, until
drain water is clean and clear.
The supplemental heater and/or circulator pump, if used,
should be shut off. All drains and vents should be opened
to completely drain the system. Short-circuited supply and
return runouts should now be connected to the unit supply
and return connections.
Refill the system with clean water. Test the system water
for acidity and treat as required to leave the water slightly
alkaline (pH 7.5 to 8.5). The specified percentage of
antifreeze may also be added at this time. Use commercial
grade antifreeze designed for HVAC systems only.
Environol™ brand antifreeze is recommended.
Once the system has been filled with clean water and
antifreeze (if used), precautions should be taken to protect
the system from dirty water conditions. Dirty water will
result in system-wide degradation of performance, and
solids may clog valves, strainers, flow regulators, etc.
Additionally, the heat exchanger may become clogged
which reduces compressor service life and can cause
premature unit failure.
In boiler/tower application, set the loop control panel
set points to desired temperatures. Supply power to all
motors and start the circulating pumps. After full flow has
been established through all components including the
heat rejector (regardless of season), air vented and loop
temperatures stabilized, each of the units will be ready for
check, test and start up and for air and water balancing.
Ground Source Loop System Checkout
Once piping is completed between the unit pumping
system and ground loop, final purging and charging of
the loop is needed. A high pressure 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. 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
may decrease soon after initial installation, due to pipe
expansion and loop temperature change. Running the
unit for at least 30 minutes after the system has been
completely purged of air will allow for the “break-in”
period. It may be necessary to adjust static loop pressure
(by adding water) after the unit has run for the first time.
Loop static pressure will also 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 charging the system initially.
Ensure the pump provides adequate flow through the unit
by checking pressure drop across the heat exchanger.
Usually 2.25-3.0 gpm of flow per ton of cooling capacity is
recommended in earth loop applications.
Open Loop Ground Water Systems
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. Insure
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. Due to only minor
differences in flow rate from low to high, only one solenoid
valve should be used. The valve should be sized for full flow.
Discharge water from the unit is not contaminated in any
manner and can be disposed of in various ways, depending
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.
Open System - Groundwater Application
14
Unit Supply
Disconnects
(IfApplicable)
Compressor
Line Voltage
Aux. Heat Supply
Low Voltage
to Thermostat
and Valve
P/T Plugs
Vibration
Absorbing Pad
Flexible
Duct Collar
Hot Water Generator
Connections
Drain
Strainer
Rubber Bladder
Expansion Tank
Solenoid
Valve
valve while acid flushing)
Boiler Drains
For HX Flushing
Flow Control
(on outlet of
Solenoid Valve)
Water Out
Shut Off Valves
Shut Off Valves
(to isolate solenoid
Valve
Water In
Hot Water Generator Connections
ENVISION2 COMPACT INSTALLATION MANUAL
The heat reclaiming hot water generator coil is of 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
or two 50-gallon water heaters connected in a series as
shown below. Electric water heaters are recommended.
Make sure all local electrical and plumbing codes are met
for installing a hot water generator. A water softener is
recommended with hard water (greater than 10 grains or
170 total hardness).
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.
Typical Hot Water Generator Installation
3/4 in. x 3/4 in. x 1/2 in. Tee
Ball Valve
Vent
HWG
Water Out
Field Installed
HWG Pump
HWG
Water In
Cold
Water In
Drain Valve
P/T Relief
Valve
Water Out
In
Hot
Hot Water Generator Installation In Preheat Tank
Cold
3/4 in. x 3/4 in. x 1/2 in. Tee
Ball Valve
Vent
Water Out
Field Installed
HWG
Water In
HWG
HWG Pump
Water In
P/T Relief
Valve
In
Drain Valve
NOTE: This configuration maximizes hot water
generator capability.
Hot
Water Out
P/T Relief
Valve
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 HWG
water out.
CAUTION: Elements will burn out if energized dry.
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
DHW 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.
15
ENVISION2 COMPACT INSTALLATION MANUAL
Hot Water Generator Connections cont.
Hot Water Generator Startup
1. Make sure the power is off to the heat pump. Connect
the wire from the hot water generator pump to T1 on
the contactor.
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
circuit are open.
11. Turn on the unit to heating.
12. The HWG pump should be running. When the pump
is first started, turn the venting (burping) screw (if
equipped) in the center of the pump two (2) turns open
until water dribbles out, then replace. Allow the pump
to run for at least five minutes to ensure that water has
filled the circulator properly.
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.
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 wires are
disconnected from the contactor.
16
Freeze Detection
For Aurora Base Control, set SW2-1, FP1, on the printed
circuit board for applications using a closed loop antifreeze
solution to 15°F [-9.4°C]. On applications using an open
loop/ground water system (or closed loop no antifreeze), set
this dip switch to 30°F [-1.1°C], the factory default setting.
(Refer to the Dip Switch Field Selection table).
Electrical Connections
ENVISION2 COMPACT 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.
Power Connection
Connect the incoming line voltage wires to L1 and L2 of the
contactor for single-phase unit. Consult the Electrical Data
tables for correct fuse sizes.
Aurora Base Control Box
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 PS.
CAUTION: When installing a unit with a variable
speed ECM blower motor in 460/60/3 voltage,
a neutral wire is required to allow proper unit
operation.
17
ENVISION2 COMPACT INSTALLATION MANUAL
Electrical Data
PSC Motor
Model
009
012
015
018
024
024*
030
030*
036
036*
Single Speed
042
042*
048
048*
060
070
HACR circuit breaker in USA only
*With optional High-static PSC motor
**With optional IntelliStart
Air fl ow values are with dry coil and 1 in. MERV 4.
For wet coil performance fi rst calculate the face velocity of the air coil (Face Velocity [fpm] = Airfl ow [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.
* Denotes setting for 265 V operation.
Airfl ow (cfm) at External Static Pressure (in. wg)
731695643--
11/20/12
About 5-Speed ECM Constant
Torque Motors
The 5-speed ECM is a ‘Constant Torque’ ECM motor and delivers
air fl ow similar to a PSC but operates as effi ciently as a variable
speed ECM motor. Because it is an ECM motor, the 5-speed
ECM can ramp slowly up or down like the variable speed ECM
motor. There are 5 possible speed taps available on the 5-speed
ECM motor with #1 being the lowest airfl ow and #5 being the
highest airfl ow. These speed selections are preset at the time of
manufacture and are easily changed in the fi eld 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 fl ow to change with G, Y1, Y2 and W signals. Each of those
5 speeds has a specifi c ‘Torque’ value programmed into the
motor for each speed selection. As static pressure increases,
airfl ow 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 24VAC.
5-Speed ECM Benefi ts:
- High effi ciency
- Soft start
- 5 speeds with up to 4 speeds on-line
- Built in logic allows air fl ow to change with G, Y1, Y2 and
W signals
Med Low21336 1299126112421222 120211811157113211111090937874830--
Med High41799 17831767 1744 1720 1693 1666 1649163116171603 1560 15301492--
049
Med Low2
Med High4
064
Med Low2
Med High4
072
Med Low2
Factory speed settings are in Bold
Air fl ow values are with dry coil and standard fi lter
For wet coil performance fi rst calculate the face velocity of the air coil (Face Velocity [fpm] = Airfl ow [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.
Airfl ow (cfm) at External Static Pressure (in. wg)
3/16/12
Setting Blower Speed - 5-Speed ECM
5-speed ECM blower motors have fi ve (5) speeds of which
three (3) are selectable on single speed and four (4) are
selectable on dual capacity.
CAUTION: Disconnect all power before
performing this operation.
-Speed ECM Motor Connections - Single Speed5-Speed ECM Motor Connections - Dual Capacity
High Voltage
C - Black
L - Orange
G - Green
G - Blue
Y1 - Red
Connections
3/16 in.
C
GN
L
12
345
Low Voltage
Connections 1/4 in.
N - Brown
AUX - Gray
C - Black
L - Orange
G - Green
G - Blue
Y1 - Red
High Voltage
Connections
3/16 in.
C
GN
345
12
Low Voltage
Connections 1/4 in.
N - Brown
AUX - Gray
Y2 - Tan
23
ENVISION2 COMPACT INSTALLATION MANUAL
Blower Performance Data cont.
Variable Speed ECM Motor
Single Speed
Max
Model
015
018
024
030
036
036
w/1hp*
042
042
w/1hp*
048
048
w/1hp*
060
070
Blower
ESP
0.509 x 71/2
0.509 x 71/2
0.509 x 71/2
0.509 x 71/2
0.5011 x 101/2
0.7511 x 101
0.5011 x 101/2
0.7511 x 101
0.5011 x 101/2
0.7511 x 101
0.7511 x 101
0.7511 x 101
Dual Capacity
Max
Model
026
038
038
w/1hp*
049
049
w/1hp*
064
072
Factory settings are at recommended L-M-H DIP switch locations
M-H settings MUST be located within boldface cfm range
Lowest and Highest DIP switch settings are assumed to be L and H respectively
cfm is controlled within ±5% up to the maximum ESP
Max ESP includes allowance for wet coil and 1 in. MERV 4
Blower
ESP
0.509 x 71/2
0.5011 x 101/2
0.7511 x 101
0.5011 x 101/2
0.7511 x 101
0.7511 x 101
0.7511 x 101
Size
Size
Motor
hp
Motor
hp
123456789101112
300400
300400
400500
400500600
6507508501000
8001000
6508009001050
8009001000
65080090010501150
80090010001200
80095011001300
80095011001300
123456789101112
400500600
6507508501000
8001000
L
65080090010501150
80090010001200
L
80095011001300
80095011001300
500600700
L
500600700800
L
L
L
L
1100130015001600
L
L
L
L
L
MH
L
L
L
L
L
1100130015001600
MH
L
MH
MH
600700800900
MH
12001400160017001850
MH
L
Airfl ow DIP Switch Settings
100011001200
70080090010001100
MH
11001200130014001500
MH
1800
11501250135014501550
MH
2000220023002400
1250135014501550
MH
1400160017001850
MH
15001750195021002300
MH
15001750195021002300
MH
Air Flow DIP Switch Settings
7008009001000
MH
11001200130014001500
MH
1800
1250135014501550
MH
1400160017001850
MH
15001750195021002300
MH
15001750195021002300
MH
2000220023002400
11001200
2000220023002400
1200
3/16/12
3/16/12
24
Blower Performance Data cont.
ENVISION2 COMPACT INSTALLATION MANUAL
Setting Blower Speed - Variable Speed ECM
The ABC board’s Yellow Confi g LED will fl ash
the current variable speed ECM blower speed
selections for low, med, and high continuously
with a short pause in between. The speeds can
also be confi rmed with the AID Tool under the
Setup/ECM Setup screen. The variable speed ECM
blower motor speeds can be fi eld adjusted with or
without using an AID Tool.
Variable Speed ECM Setup without an AID Tool
The blower speeds for Low (G only), Med (Y1),
and High (Y2/Aux) can be adjusted directly
at the Aurora ABC board which utilizes the
push button (SW1) on the ABC board. This
procedure is outlined in the Variable Speed ECM
Confi guration Mode portion of the Aurora ‘Base’
Control System section.
Variable Speed ECM Setup with an AID Tool
A much easier method utilizes the AID Tool to
change the airfl ow using the procedure below.
First navigate to the Setup screen and then
select ECM Setup. This screen displays the
current variable speed ECM settings. It allows the
technician to enter the setup screens to change
the variable speed ECM settings. Change the
highlighted item using the ◄ and ► buttons and
then press the ◙ button to select the item.
Variable Speed ECM Setup with an AID Tool cont.
ECM SPEED INFO
Selecting YES will enter
variable speed ECM speed
LOW SPEED: 3
MED SPEED: 5
HIGH SPEED: 7
WANT TO CHANGE?
YES
OPTION ◄►NOENTER ◙
setup, while selecting NO will
return to the previous screen.
Variable Speed ECM Speed Setup - These screens
allow the technician to select the low, medium,
and high blower speed for the variable speed ECM
blower motor. Change the highlighted item using
the ▲ and ▼ buttons. Press the ◙ button to select
the speed.
ECM SPEED INFO
1
2 <– LOW
3
4
5
6
7
8
9
10
11
12
OPTION ◄► ENTER ◙
ECM SPEED INFO
1
2 LOW
3
4
5 <– MED
6
7
8
9
10
11
12
OPTION ◄► ENTER ◙
ECM SPEED INFO
1
2 LOW
3
4
5 MED
6
7
8
9
10
11
12 <– HIGH
OPTION ◄► ENTER ◙
After the high speed setting is selected the AID
Tool will automatically transfer back to the ECM
Setup screen.
25
ENVISION2 COMPACT INSTALLATION MANUAL
s
ff
OffOnOff
/
Y
A
Y1
T
r
Resisto
Wiring Schematics
Aurora Control 460/60/3 Variable Speed ECM
Compressor
T1
T3
Black (54)
Blue (55)
Red (56)
RA-B+
K4
Black (7)
White (8)
Red (9)
P7
Note 3
CC
Violet (14)
K2
Phase
Guard
Monitor
(PGM)
L1 L2 L3
Dual
Capacity
Units Only
UltraTech
CS
Black (15)
RCP
Blue(16)
Blue(18)
CC2HICC2LOCC2
P5
G
K3
urora Base Control
(ABC)
LED4LED5
RS485 EXP
C
RA-B+C
Brown
Black (54)
Blue (55)
Red (56)
CC
24V
REVREV FP1 FP1 FP2 FP2 LPS LPS HPSHPS
P12
K1
CO
N/A
C
P6
Note 2
Isolation
Valve
213
Red
(51)
Green
(50)
White
(52)
Y-OU T
Note 4
PGM
C
Yellow (91)
Y
Black/White (92)
Red (53)
Note 2
T2
YellowRedBlack
T2T3
T1
CC
L2L3
L1
Blue
Black
460V
ransforme
24V
RS485 NET
Black/White
P9
P8
JW2
RS485 NET
Yellow
DH W Y2 Y1 G O/B C R LOR F FG CC CCG
P2
ES
LS
ALM
K5
ALG
ACC COM
ACC NO
ACC NC
LO
R
C
O/B
G
Y1
Y2
W
DH
P1
R
K6
F1
C
Orange
RV
RV
Orange (01)
Orange (02)
SW1
EH2CEH1
Unit Power Supply
460/60/3 w/Neutral
G
HPLP
Black (09)
Black (10)
Fault
R
30°F
RV – B/O
Acc – Dip 1
Acc – Dip 2
Config
Green (93)
Gray (94)
Black (95)
Yellow (96)
Red (97)
P4
Off
Note 1
Ground
Neutral
Disconnect
L1L1
L2L2
L3L3
Orange
R
Variable Speed
Blower Motor
G
PWM
16
Notes
Brown
P112 3 4 51
ECM
C1
C2
CFM
1 312 15 10
P12
Green
C
Black/White
R
Yellow
F
Violet (42)
Blue (24)
PWM
CFM
Yellow (25)
C
Green/Yellow (28)
P13
On
1
2
3
4
5
1 – Optional, factory installed unit mounted disconnect.
3 – Optional, factory installed phase guard
4 – Optional, factory installed phase guard. The yellow
transformer wire shall be connected directly to the CPU
board, if this option is not installed.
PB3
N
L1
L2
L3
r
FD
T
Blue (07)
Yellow
Status
G
Blue (08)
FP1 – 15°F
FP2 – 15°F/30°F
CC – Dual/Single
L – Pulse/Continuous
Reheat/Normal
CCG
Yellow
P3
Accessory Relay
Operation
Cycle with Blower
Cycle with Compressor
Water Valve Slow Open
Outdoor Air Damper
Event
Random Start Delay
Compressor On Delay
Compressor Minimum On Time
Compressor Short Cycle Delay
Blower Off Delay
Fault Recognition Delay – High Pressure
Start-Up Bypass – Low Pressure
Fault Recognition Delay – Low Pressure
Start-Up Bypass – Low Water/Air Coil Limit
Fault Recognition Delay – Low Water/Air Coil Limit
Fault Recognition Delay – Condensate Overflow
Thermostat Call Recognition Time
Auxiliary Heat Staging Delay
Emergency Heat Staging Delay
Water Valve Slow Open Delay
Reheat Delay
Gray
(61)
SW2-4
On
Off
Off On
RH
Gray (60)
SW2-5
On
Aurora Timing Events
Normal Mode
5 to 80 seconds1 second
5 seconds< 1 second
2 minutes5 seconds
4 minutes15 seconds
Factory Low Voltage Wiring
Factory Line Voltage Wiring
Field Low Voltage Wiring
Field Line Voltage Wiring
Optional Block
DC Voltage PCB Traces
Field Zone Sensor Wiring
Internal Junction
Quick Connect Terminal
Field Wiring Lug
L1
Ground
Relay Contacts – N.O., N.C.
Capacitor
Fuse
CC – Compressor Contactor
CO – Condensate Overflow Sensor
ES – Emergency Shutdown
HP – High Pressure Switch
LP – Low Pressure Switch
FD – Freeze Detection Sensor
F1 – Fuse
Switch - Condensate Overflow
Switch - High pressure
Switch - Low pressure
123
Polarized connector
Light Emitting Diode - Green
Light Emitting Diode - Yellow
Light Emitting Diode - Red
ENVISION2 COMPACT INSTALLATION MANUAL
Wiring Schematics cont.
Aurora Base Control 460/60/3 5-Speed ECM with Reheat
T1
Phase
Guard
Monitor
(PGM)
L1 L2 L3
Note 2
Isolation
Valve
213
Red
(51)
Green
(50)
White
Note 4
Red (9)
White (8)
Black (7)
Note 5
PGM
Y-OUT
Y
C
Black/White (92)
Yellow (91)
(52)
Gray
(61)
Red (53)
Note 2
RH Gray (60)
P2
ES
LS
ALM
ALG
ACC COM
ACC NO
ACC NC
LO
R
C
O/B
G
Y1
Y2
W
DH
P1
R
Red
Yellow
CC2
EH1
K5-Alarm
T3
T2
Yellow
T2T3
CC
L2L3
L1
Blue
Blue
460V
460V
Transformer
24V
CCFC
Relay
K6-Acc
Relay
RS485 NET
C
Green
Slow Flash
Fast Flash
Flash Code
Status LED (LED1, Green)
Configuration LED (LED2, Yellow)
Fault LED (LED3, Red)
Status LED (LED1, Green)
Normal Mode
Control is Non-Functional
Test Mode
Lockout Active
Dehumidification Mode
Reserved
Reserved
Load Shed
ESD
Reserved
Black
T1
Green (93)
Black (95)
Yellow (96)
Red (97)
Black
Black
Black/White
Dual
Capacity
Units Only
UltraTech
CC
CS
Violet (14)
Black (15)
RCP
Blue(16)
Blue(18)
JW2
P9
Com2
LED5
G
RS485 NET
R-+
P8
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
1 – Optional, factory installed unit mounted disconnect.
2 – Optional, factory installed internal isolation valve.
3 – Optional, factory installed phase guard
4 – Optional, factory installed phase guard. The yellow transformer wire
shall be connected directly to the CPU board, if this option is not installed.
5 – Wire is provided with the unit but only connected to the X13 motor on dual
capacity units.
Legend
Factory Low Voltage Wiring
Factory Line Voltage Wiring
Field Low Voltage Wiring
Field Line Voltage Wiring
Optional Block
DC Voltage PCB Traces
Field Zone Sensor Wiring
Internal Junction
Quick Connect Terminal
Field Wiring Lug
L1
Ground
Relay Contacts – N.O., N.C.
Capacitor
Fuse
CC – Compressor Contactor
CO – Condensate Overflow Sensor
ES – Emergency Shutdown
HP – High Pressure Switch
LP – Low Pressure Switch
FD – Freeze Detection Sensor
F1 – Fuse
Thermistor
T
Relay Coil
Switch - Condensate Overflow
Switch - High pressure
Devices Must Be Wired in
Daisy Chain Configuration
NET+
COM
NET-
NET+
NET-
COM
NET+
NETCOM
NET+
NETN/CN/C
Signal
Orange
Red
White
Black
LED1
LED2
LON
ADAPTER
PORT
LED6
LED7
2W
4W
GND
GND
RNET+
LN+
LN-
RNET-
+12
+12V
/S
RNETLOCAL ACCESS
Blue
Green
Brown
Yellow
POWER
GND
24 VAC
LED3
TX
RX
POWER
FORMAT BATT
Communication
Options
NOTE 1
TX
RX
LED4
LED5
RUN
ERR
12345678
ON
TEN’S
0
149
238
7
6
5
0
149
238
7
6
5
ONE’S
MAC Address Setting
GND
RNET+
RNET-
+12V
GND
RNET+
RNET-
+12V
12
ZS Sensor 2
Addr: 1
ZS Sensor 3
Addr: 2
ZS Sensor 1
Addr: 0
GND
RNET+
RNET-
+12V
ZS Sensor Information
Zone Sensors can be wired in daisy chain as show or in a star or
hybrid configuration. Maximum of 5 sensors per UPC. Maximum
allowable load 210mA. See the UPC install manual for possible
sensor combinations.
DIP
Switch
Value
1
2
4
8
1234
Each ZS sensor must have a unique address, but
the addresses do not need to be sequential. Use
the DIP switches on the back of the ZS sensor to
ON
set an address from 0 to 4. (0 is the factory
default.) Each DIP switch has the value shown in
the figure to the left. Turn on as many DIP
switches as you need so that their total value
equals the address.
28
Notes
1. Use DIP Switches 5 – 8 to change
communication protocol and DIP switches 1 – 2
to change BACnet baud rate
Legend
Factory Low Voltage Wiring
Field Low Voltage Wiring
RJ45 Connector
12345678
Controls - Aurora Base Control
S
ENVISION2 COMPACT INSTALLATION MANUAL
Aurora ‘Base’ Control
Field Selectable Options via Hardware
DIP Switch (SW1) – Test/Configuration Button (See SW1
Operation Table)
Test Mode
The control is placed in the test mode by holding the push
button switch SW1 for 2 - 5 seconds. In test mode most of
the control timings will be shortened by a factor of sixteen
(16). LED3 (green) will flash at 1 second on and 1 second
off. Additionally, when entering test mode LED1 (red) will
NOTE: Refer to the Aurora Base Control Application and
Troubleshooting Guide and the Instruction Guide: Aurora
Interface and Diagnostics (AID) Tool for additional information.
flash the last lockout one time. Test mode will automatically
time out after 30 minutes. Test mode can be exited by
pressing and holding the SW1 button for 2 to 5 seconds or
by cycling the power. NOTE: Test mode will automatically
be exited after 30 minutes.
Control Features
oftware ABC Standard Version 2.0
Single or Dual Capacity Compressors
Either single or dual capacity compressors can be operated.
Variable Speed ECM Blower Motor Option
A Variable Speed ECM blower motor can be driven directly
using the onboard PWM output. Four blower speeds are
available based upon the G, Y1, Y2, and W input signals to
the board. The blower speeds can be changed either by the
ECM manual configurations mode method or by using the
Aurora AID Tool directly. All four blower speeds can be set
to the same speed if desired.
5-Speed ECM Blower Motor Option
A 5-Speed ECM blower motor will be driven directly using
the thermostat connections. Any of the G, Y1, or Y2/W
signals can drive any of the 5 available pre-programmed
blower speeds on the motor. All 5 Series "G" vintage units
will be wired this way at the factory.
Other Control Features
• Random start at power up
• Anti-short cycle protection
• High and low pressure cutouts
• Loss of charge
• Water coil freeze detection
• Air coil freeze detection
• Over/under voltage protection
• Condensate overflow sensor
• Load shed
• Dehumidification (where applicable)
• Emergency shutdown
• Hot gas reheat operation (where applicable)
• Diagnostic LED
• Test mode push button switch
• Two auxiliary electric heat outputs
• Alarm output
• Accessory output with N.O. and N.C.
• Modbus communication (master)
• Modbus communication (slave)
ECM Configuration Mode
The control is placed in the ECM configuration mode by
holding the pushbutton switch SW1 for 5 to 10 seconds, the
high, low, and “G” ECM speeds can be selected by following
the LED display lights. LED2 (yellow) will fast flash when
entering the ECM configuration. When setting “G” speed
LED3 (green) will be continuously lit, for low speed LED1
(red) will be continuously lit, and for high speed both LED3
(green) and LED1 (red) will be continuously lit. During the
ECM configuration mode LED2 (yellow) will flash each of
the 12 possible blower speeds 3 times. When the desired
speed is flashed press SW1, LED2 will fast flash until SW1
is released. “G” speed has now been selected. Next select
low speed, and high speed blower selections following the
same process above. After third selection has been made,
the control will exit the ECM configuration mode. Aux fan
speed will remain at default or current setting and requires
the AID Tool for adjustment.
Reset Configuration Mode
The control is placed in reset configuration mode by
holding the push button switch SW1 for 50 to 60 seconds.
This will reset all configuration settings and the EEPROM
back to the factory default settings. LED3 (green) will turn
off when entering reset configuration mode. Once LED3
(green) turns off, release SW1 and the control will reset.
DIP Switch (SW2)
SW2-1 FP1 Selection – Low water coil temperature limit
setting for freeze detection. On = 30°F; Off = 15°F.
SW2-2 FP2 Selection – On = 30°F; Off = N/A
SW2-3 RV – O/B - thermostat type. Heat pump
thermostats with “O” output in cooling or “B”
output in Heating can be selected. On = O; Off = B.
SW2-4 Access Relay Operation (P2)
and 2-5
Access Relay OperationSW2-4SW2-5
Cycle with BlowerONON
Cycle with CompressorOFFOFF
Water Valve Slow OpeningONOFF
Cycle with Comm. T-stat Hum CmdOFFON
29
ENVISION2 COMPACT INSTALLATION MANUAL
A
Controls - Aurora Base Control cont.
Cycle with Blower - The accessory relay will cycle with
the blower output.
Cycle with Compressor - The accessory relay will cycle
with the compressor output.
Water Valve Slow Opening - The accessory relay will
cycle and delay both the blower and compressor output
for 90 seconds.
SW2-6 CC Operation – selection of single or dual capacity
compressor. On = Single Stage; Off = Dual Capacity
SW2-7 Lockout and Alarm Outputs (P2) – selection of a
continuous or pulsed output for both the LO and
ALM Outputs. On = Continuous; Off = Pulsed
SW2-8 Future Use
Alarm Jumper Clip Selection
From the factory, ALM is connected to 24 VAC via JW2. By
cutting JW2, ALM becomes a dry contact connected to ALG.
ECM Blower Speeds
The blower speeds can be changed either by using the
ECM manual configurations mode method or by using the
Aurora AID Tool directly (see Instruction Guide: Aurora
Interface and Diagnostics (AID) Tool topic).
Field Selectable Options via Software
(Selectable via the Aurora AID Tool)
ECM Blower Speeds
An ECM blower motor can be driven directly using the
onboard PWM output. Four blower speeds are available,
based upon the “G”, Y1 (low), Y2 (high), and Aux input
signals to the board. The blower speeds can be changed
either by the ECM manual configurations mode method (see
ECM Configuration Mode topic) or by using the Aurora AID
Tool directly. All four blower speeds can be set to the same
speed if desired. Aux blower speed will remain at default or
current setting and requires the AID Tool for adjustment.
Lockout – when locked out, the blower will operate
continuously in “G” speed, and PSC blower motor output
will remain on. The Alarm output (ALM) and Lockout output
(L) will be turned on. The fault type identification display
LED1 (Red) shall flash the fault code. To reset lockout
conditions with SW2-8 On, thermostat inputs “Y1”, “Y2”,
and “W” must be removed for at least 3 seconds. To reset
lockout conditions with SW2-8 Off, thermostat inputs “Y1”,
“Y2”, “W”, and “DH” must be removed for at least 3 seconds.
Lockout may also be reset by turning power off for at least
30 seconds or by enabling the emergency shutdown input
for at least 3 seconds.
Lockout With Emergency Heat - if the control is locked out
in the heating mode, and a Y2 or W input is received, the
control will operate in the emergency heat mode while the
compressor is locked out. The first emergency heat output will
be energized 10 seconds after the W input is received, and the
blower will shift to high speed. If the control remains locked
out, and the W input is present, additional stage of emergency
heat will stage on after 2 minutes. When the W input is
removed, all of the emergency heat outputs will turn off, and
the ECM blower will shift to “G” speed and PSC blower motor
output will remain on.
High Pressure – fault is recognized when the Normally
Closed High Pressure Switch, P4-9/10 opens, no matter
how momentarily. The High Pressure Switch is electrically in
series with the Compressor Contactor and serves as a hardwired limit switch if an overpressure condition should occur.
Low Pressure - fault is recognized when the Normally
Closed Low Pressure Switch, P4-7/8 is continuously open
for 30 seconds. Closure of the LPS any time during the 30
second recognition time restarts the 30 second continuous
open requirement. A continuously open LPS shall not be
recognized during the 2 minute startup bypass time.
Loss of Charge – fault is recognized when the Normally
Closed Low Pressure Switch, P4-7/8 is open prior to the
compressor starting.
Safety Features
The following safety features are provided to protect the
compressor, heat exchangers, wiring and other components
from damage caused by operation outside of design conditions.
Fuse – a 3 amp automotive type plug-in fuse provides
protection against short circuit or overload conditions.
Random Start – 5 to 80 second random start upon power up.
Fault Retry – in the fault condition, the control will stage off
the outputs and then “try again” to satisfy the thermostat
Y input call. Once the thermostat input calls are satisfied,
the control will continue on as if no fault occurred. If 3
consecutive faults occur without satisfying the thermostat
Y input call, then the control will go to Lockout mode.
Condensate Overflow - fault is recognized when the
impedance between this line and 24 VAC common or chassis
ground drops below 100K ohms for 30 seconds continuously.
Freeze Detection (Coax) - set points shall be either 30°F
or 15°F. When the thermistor temperature drops below
the selected set point, the control shall begin counting
down the 30 seconds delay. If the thermistor value rises
above the selected set point, then the count should reset.
The resistance value must remain below the selected set
point for the entire length of the appropriate delay to be
recognized as a fault. This fault will be ignored for the initial
2 minutes of the compressor run time.
Freeze Detection (Air Coil) - uses the FP2 input to protect
against ice formation on the air coil. The FP2 input will
operate exactly like FP1 except that the set point is 30
degrees and is not field adjustable.
30
S
Controls - Aurora Base Control cont.
ENVISION2 COMPACT INSTALLATION MANUAL
Over/Under Voltage Shutdown - An over/under voltage
condition exists when the control voltage is outside the
range of 18 VAC to 30 VAC. If the over/under voltage
shutdown lasts for 15 minutes, the lockout and alarm relay
will be energized. Over/under voltage shutdown is selfresetting in that if the voltage comes back within range
of 18 VAC to 30 VAC for at least 0.5 seconds, then normal
operation is restored.
Operation Description
Power Up - The unit will not operate until all the inputs and
safety controls are checked for normal conditions. The unit
has a 5 to 80 second random start delay at power up. Then
the compressor has a 4 minute anti-short cycle delay after
the random start delay.
tandby In standby mode, Y1, Y2, W, DH, and G are not
active. Input O may be active. The blower and compressor
will be off.
Heating Operation
Heating, 1st Stage (Y1) - The blower is started on “G” speed
immediately and the compressor is energized 10 seconds
after the Y1 input is received. The ECM blower motor is
switched to low speed 15 seconds after the Y1 input.
Heating, 2nd Stage (Y1, Y2) - The compressor will be
staged to full capacity 20 seconds after Y2 input is
received. The ECM blower will shift to high speed 15
seconds after the Y2 input is received.
Heating, 3rd Stage (Y1, Y2, W) - The hot water pump is deenergized and the first stage of electric heat is energized
10 seconds after the W command is received. If the
demand continues the second stage of electric heat will be
energized after 5 minutes.
Emergency Heat (W) - The blower will be started on “G”
speed, 10 seconds later the first stage of electric heat will
be turned on. 5 seconds after the first stage of electric
heat is energized the blower will shift to Aux speed. If the
emergency heat demand is not satisfied after 2 minutes the
second electric heat stage will be energized.
Blower (G) - The blower will start immediately upon
receiving a thermostat G command. If there are no other
commands from the thermostat the ECM will run on “G”
speed until the G command is removed. Regardless of
blower input (G) from the thermostat, the blower will
remain on for 30 seconds at the end of each heating cycle.
Cooling Operation
In all cooling operations, the reversing valve directly tracks
the O input. Thus, anytime the O input is present, the
reversing valve will be energized.
Cooling, 1st Stage (Y1, O) - The blower is started on “G”
speed immediately and the compressor is energized 10
seconds after the Y1 input is received. The ECM blower motor
is switched to low speed 15 seconds after the Y1 input.
Cooling, 2nd Stage (Y1, Y2, O) - The compressor will
be staged to full capacity 20 seconds after Y2 input
is received. The ECM blower will shift to high speed 15
seconds after the Y2 input is received.
Blower (G) - The blower will start immediately upon
receiving a thermostat G command. If there are no other
commands from the thermostat the ECM will run on “G”
speed until the G command is removed. Regardless of
blower input (G) from the thermostat, the blower will
remain on for 30 seconds at the end of each heating,
cooling, and emergency heat cycle.
Dehumidification (Y1, O, DH or Y1, Y2, O, DH) - When a
DH command is received from the thermostat during a
compressor call for cooling the ECM blower speed will be
reduced by 15% to increase dehumidification.
Emergency Shutdown - Four (4) seconds after a valid ES
input, P2-7 is present, all control outputs will be turned off
and remain off until the emergency shutdown input is no
longer present. The first time that the compressor is started
after the control exits the emergency shutdown mode,
there will be an anti-short cycle delay followed by a random
start delay. Input must be tied to common to activate.
Continuous Blower Operation - The blower output will
be energized any time the control has a G input present,
unless the control has an emergency shutdown input
present. The blower output will be turned off when G input
is removed.
Load Shed - The LS input disables all outputs with the
exception of the blower output. When the LS input has been
cleared, the anti-short cycle timer and random start timer
will be initiated. Input must be tied to common to activate.
31
ENVISION2 COMPACT INSTALLATION MANUAL
1
2
Controls - Aurora Base Control cont.
Aurora ‘Base’ Control LED Displays
These three LEDs display the status, configuration, and
fault codes for the control. These can also be read in plain
English via the Aurora AID Tool.
Status LED (LED3, Green)
Description of OperationFault LED, Green
Normal ModeON
Control is Non-functionalOFF
Test ModeSlow Flash
Lockout ActiveFast Flash
Dehumidification ModeFlash Code 2
(Future Use)Flash Code 3
(Future Use)Flash Code 4
Load ShedFlash Code 5
ESDFlash Code 6
(Future Use)Flash Code 7
Configuration LED (LED2, Yellow)
Description of OperationConfiguration LED, Yellow
No Software OverwrittenFlashing ECM Setting
DIP Switch was OverwrittenSlow Flash
ECM Configuration ModeFast Flash
Fault LED (LED1, Red)
Red Fault LED
LED Flash
Code*
Lockout
Normal - No FaultsOFF–
Fault - Input1NoAuto
Fault - High Pressure2YesHard or Soft
Fault - Low Pressure3YesHard or Soft
Fault - Freeze Detection FP24YesHard or Soft
Fault - Freeze Detection FP15YesHard or Soft
Fault - Condensate Overflow7YesHard or Soft
NOTE: All codes >11 use long flash for tens digit and short flash for the ones
digit. 20, 30, 40, 50, etc. are skipped.
Reset/
Remove
Aurora Interface and Diagnostics (AID) Tool
The Aurora Interface and
Diagnostics (AID) Tool is
a device that is a member
of the Aurora network.
The AID Tool is used to
troubleshoot equipment
which uses the Aurora
control via Modbus RTU
communication. The AID
Tool provides diagnostics,
fault management, ECM
setup, and system configuration capabilities to the Aurora
family of controls. An AID Tool is recommended, although
not required, for ECM airflow settings. The AID Tool simply
plugs into the exterior of the cabinet in the AID Tool port.
ABC Control Board Layout
5.0 in.
On
o
F/30
FP1 – 15
o
F/30oF
FP2 – 15
RV – B/O
ACC – Dip
ACC – Dip
Reheat/Normal
Control
C
G
O/B
Field ConnectionsField Connections
C
G
O/B
Off
LED 2
o
1
F
2
YR
3
Config
4
5
6
7
8
SW2
Com1
Com2
W
Y1
Y2
DH
W
Y1
Y2
DH
LED 5
LED 4
3A-Fuse
P6
P7
G
P8
G
RR
EH1
P3
Factory
Exp
RS485
RS 485
RS485 NET
EH2
EH1
N/A
CO
(+)
(-)
(+)
(-)
C
C
R
C
R
C
CC
C
6.25 in.
C
CFM
PWM
HP
HP
LP
LP
FP2
FP2
FP1
FP1
REV
REV
CC2
G
LO
CC2
HI
CCG
CC
FG
F
R
F
CC
G
Y1
P4
Factory
P5
Factory
JW2 - Alarm
P2
LS
ES
ECM PWM
P13
ALM
SW1 Test
RV – K1
CC – K2
CC Hi – K3
Fan – K4
Alarm – K5
Acc – K6
ALG
ACC c
ACC no
LED 3
Status
ACC nc
LED 1
Fault
CC – Dual/Single
G
L – Pulse/Continuous
AuroraTM Base
Factory Use
P11
P9
Factory Fan Connection
R
LO
P1
R
LO
5.75 in.
5.5 in.
32
Controls - UPC DDC Control (optional)
ENVISION2 COMPACT INSTALLATION MANUAL
Aurora UPC ControllerZS Series Sensors
The Aurora Unitary Protocol Converter (UPC) is designed
to add-on to any Aurora based heat pump control. The
Aurora Unitary Protocol Convertor (UPC) is designed
to allow water source heat pumps to be integrated into
Building Automation Systems (BAS) with ease. The
Aurora UPC is an integrated solution and communicates
directly with the Aurora Heat Pump Controls and allows
access/control of a variety of internal Aurora heat pump
operations such as sensors, relay operation, faults and
other information. In turn, the UPC then converts internal
Aurora Modbus protocol to BACnet MS/TP, LON, or N2
protocols and communicates to the BAS system. This
provides the great benefit of complete control integration
and a myriad of information available to the BAS from
the heat pump control. Plus it also allows individual unit
configuration such as ECM fan speeds or freeze protection
setting directly over the BAS without the need for access
to the actual heat pump. The Aurora UPC is programmed
using the powerful Eikon object oriented.
The Aurora UPC is implemented with the Aurora Base
Controller (ABC) heat pump control into our latest water
source heat pumps. This will allow for a BAS to integrate
and communicate to the heat pump thru a choice of 3
different communication protocols. The Aurora UPC has
the ability to communicate BACnet MS/TP, N2 open, or
LonWorks (requires LON Plugin card). This flexibility is
possible due to the onboard dipswitches which allow for the
desired protocol and baud rate to be selected in the field.
All zone temperatures and zone sensors are connected
to the UPC on an RNet bus, simplifying hook up at the
unit. RNet sensors can include a combination of zone
temperature and humidity, CO2, and VOC sensors. The
UPC includes built-in support for a custom configurable
keypad/display unit - BACview6 (4-line by 40 character
per line display) or BACview5 (2-line by 16 character per
line display). Up to 2 Keypad/display units can be mounted
remotely for configuration and troubleshooting.
There are an extensive number of points that the UPC has
available over the network for integration into the BAS.
Control programmers need to carefully determine which
points they want to add into the BAS database. A list of
the BACnet points, N2 points, and LON SNVTs are available
along with their individual point descriptions by contacting
the Commercial Solutions Group at 1-877-677-4420.
33
ENVISION2 COMPACT INSTALLATION MANUAL
Controls - UPC DDC Control (optional) cont.
N2
BAS
BACnet
LonWorks
Aurora UPC Features
• Rugged enclosure made of GE C2950 Cycoloy plastic
• Built-in surge transient protection circuitry
• Operating range of -20° to 140°F; 10 to 95% relative humidity, non-condensing
• Onboard CR123A battery has a life of 10 years with 720
hours of cumulative power outage
• Multi-Protocol field selectable communication port
that supports:
• Status of all unit operating conditions and fault lockouts
• Visual LED’s for status of power, network communication,
processor operation, and errors
• Provides gateway into Aurora heat pump controls for
unsurpassed control flexibility
• Network point for commanding unit into load shed
• Network point for commanding unit into
emergency shutdown
• Network points to assist in fan speed selection
• Network points for freeze protection settings
• Heating and cooling control from a remotely located
zone sensor
• Rnet communication port which allows for multiple Rnet
zone sensors (5) to be connected for space temperature
averaging if desired.
• Local laptop or BACview connection for field service
• FCC, UL and CE listed. BTL Certification is pending
Modbus
Rnet
Aurora UPC Optional Features
• BACview handheld display, needed for field configuration
of fan speeds, set points, etc.
• AID Tool for Aurora ABC configuration
and troubleshooting.
• Aurora Advanced Control adds the Aurora AXB
expansion board and provides added I/O and
standard features
• Optional Sensor Kits (requires Aurora Advanced
Control with AXB - Future Availability on Select
Models/Configurations)
• Refrigeration Monitoring – provides Suction and
discharge pressure, Suction, liquid line temps and
superheat and subcooling.
• Performance Monitoring – provides entering and
leaving loop water temperatures, loop flow rate as well
as heat of extraction or rejection rate into the loop.
• Energy Monitoring – provides real-time power
measurement (Watt) of compressor, fan, auxiliary heat
and zone pump.
• Graphics packages available in the future
34
ENVISION2 COMPACT INSTALLATION MANUAL
Controls - UPC DDC Control (optional) cont.
Port 1a is used to
communicate to the
Building Automation
System (BAS). This
port’s settings are
configured through
the onboard dip
switches.
Port 2 is used to com-
municate to the Aurora Base Controller
(ABC).
Port 1b is used for the
LonWorks plugin.
24Vac
Dip switches for
configuring the
communication
port protocol
and baud rate
for the BAS port.
Rnet port is used
for communicating
zone sensors.
BACview or local
laptop connection.
Aurora Touch Interface
Utilizing a touch-screen interface, the UPC provides a
technician the ability to configure and diagnose equipment
at the unit or from any room sensor for added accessibility
and simpler troubleshooting. The technician will have
full access to equipment status, parameter values,
temperature, and humidity sensing as well as access to
alarm and trend history. With website-like navigation,
the Auora Touch Interface is easy to use and provides
important insight into the system so your building can
operate as efficiently as possible.
Mac address
is set by 2
rotary dials.
35
ENVISION2 COMPACT INSTALLATION MANUAL
Controls - UPC DDC Control (optional) cont.
1. Leaving Air Temperature (LAT) Sensor – This 10 kOhm
NTC sensor is factory installed on all UPC equipped
heat pumps. It typically is attached to wiring inside
the blower cabinet on the suction side of the blower.
This sensor is attached on ABC FP2 pins available as
LAT AU-30.
1. Compressor Proving Sensors – This optional factory
installed current sensor is connected to confirm
compressor operation via the power wires. The sensor
is attached at ABC Y1 and available at point BV-65.
1. Valve End Switch – This optional input is setup for a field
installed flow valve end switch. This end switch input is
attached at ABC Y2 and available at point BV-67.
1. Fan Proving Sensors – This optional factory installed
current sensor is connected to confirm fan operation
via the power wires. The sensor is attached at ABC G
and available at point BV-33.
1. Occupancy Sensor - This standard feature includes a
field installed and wired room sensor with occupancy
sensor typically found in DDC systems. The RNet
room sensors can be found thru your commercial
representative. The occupancy Sensors are attached at
ABC 0 and can be found at point BV-49.
1. Dirty Filter Switch –
This optional field installed switch
is connected to confirm dirty filter operation. The
dirty filter switch can be found thru your commercial
representative. The sensor is attached at ABC W and
available at point BV-63.
2. Fault, Configuration, and Status Codes – The codes
can be visible to the BAS if desired
Aurora Base Fault Codes (ABC Only)
Fault LED (LED1, Red)
Red Fault LED
Normal - No FaultsOFF–
Fault - Input1NoAuto
Fault - High Pressure2YesHard or Soft
Fault - Low Pressure3YesHard or Soft
Fault - Freeze Detection FP24YesHard or Soft
Fault - Freeze Detection FP15YesHard or Soft
Fault - Condensate Overflow7YesHard or Soft
Normal - No FaultsOffFault-Input1NoAutoTstat input error. Autoreset upon condition removal.
Fault-High Pressure2YesHard or Soft HP switch has tripped (>600 psi)
Fault-Low Pressure3YesHard or Soft Low Pressure Switch has tripped (<40 psi for 30 continuous sec.)
Fault-Freeze Detection FP24YesHard or Soft Freeze protection sensor has tripped (<15 or 30 degF for 30 continuous sec.)
Fault-Freeze Detection FP15YesHard or Soft Freeze protection sensor has tripped (<15 or 30 degF for 30 continuous sec.)
Fault-Condensate Overflow7YesHard or Soft Condensate switch has shown continuity for 30 continuous sec.
ABC Basic Faults
Fault-Over/Under Voltage8NoAutoInstantaneous voltage is out of range. **Controls shut down until resolved.
Fault-FP1 & 2 Snsr Error11YesHard or Soft If FP1 or 2 Sensor Error
Fault-Compressor Monitor10YesHard or Soft Open Crkt, Run, Start or welded cont
Non-CriticAXBSnsrErr13NoAutoAny Other Sensor Error
CriticAXBSnsrErr14YesHard or Soft Sensor Error for EEV or HW
Alert-HotWtr15NoAutoHW over limit or logic lockout. HW pump deactivated.
Fault-VarSpdPump16NoAutoAlert is read from PWM feedback.
Not Used17NoAutoIZ2 Com Fault. Autoreset upon condition removal.
Non-CritComErr18NoAutoAny non-critical com error
Fault-CritComErr19NoAutoAny critical com error. Auto reset upon condition removal
Alarm - Low Loop Pressure21NoAutoLoop pressure is below 3 psi for more than 3 minutes
Alarm - Home Automation 123NoAutoClosed contact input is present on Dig 2 input - Text is configurable
ABC & AXB Advanced Faults
Alarm - Home Automation 224NoAutoClosed contact input is present on Dig 3 input - Text is configurable
NOTES:
*All codes >11 use long flash for tens digit and short flash for the ones digit. 20, 30, 40, 50 etc. are skipped!
Alert’ is a noncritical sensor or function that has failed. Normal operation of the heat pump is maintained but service is desired at some point.
LED Flash
Code *
Lockout
Reset/
Remove
Fault Condition Summary
36
ENVISION2 COMPACT INSTALLATION MANUAL
Controls - UPC DDC Control (optional) cont.
Aurora Base or Advanced Control Configuration and
Status Codes
Status LED (LED3, Green)
Description of OperationFault LED, Green
Normal ModeON
Control is Non-functionalOFF
Test ModeSlow Flash
Lockout ActiveFast Flash
Dehumidification ModeFlash Code 2
Load ShedFlash Code 5
Emergency ShutdownFlash Code 6
On Peak ModeFlash Code 7
(Future Use)Flash Code 8
(Future Use)Flach Code 9
9. Alarm Relay – The Alarm relay (ALM) is factory
connected to 24 VAC via jumper JW2. By cutting JW2,
ABC ALM becomes a dry contact connected to ABC
ALG. The Relay is field switchable between Factory
setting as an Alarm output or available for other uses.
10. Accessory Relay1 –
A configurable, accessory relay
on the ABC is provided that can be cycled with the
compressor, blower, or the Dehumidifier (DH) input.
A third (factory) setting cycles the relay with the
compressor but delays the compressor and blower
output for 90 sec. Source pump or slow opening
solenoid valves in well systems or variable speed
primary pumping systems would be a prime use of
this feature.
Access Relay OperationSW2-4SW2-5
Cycle with BlowerONON
Cycle with CompressorOFFOFF
Water Valve Slow OpeningONOFF
Cycle with Comm. T-stat Hum CmdOFFON
11.
Electric Heat EH1 – A digital 24VDC output is provided
for electric heat powering. UPC’s Default programming
has EH1 set for AUX/ELEC Heat operation and will be
controlled using the UPC’s internal P.I.D. logic. However
it can be changed by the BAS to be network controlled.
12. Electric Heat EH2 – A digital VDC output is provided
for field options converted from the original EH2
output. Default UPC program has the EH2 output set
for Network Control but can be changed by the BAS
to be controlled by the UPC’s internal P.I.D. logic.
37
ENVISION2 COMPACT INSTALLATION MANUAL
2
3
Controls - UPC DDC Control (optional) cont.
Aurora Advanced Control Configuration and Options
(Future Availability on Select Models/Configurations)
1. Accessory Relay2 – A second, configurable, accessory
relay on the AXB is provided that can be cycled with
the compressor 1 or 2 , blower, or the Dehumidifier (DH)
input. This is to complement the Accessory 1 Relay on
the ABC board.
Position DIP 4DIP 5Description
1ONONCycles with Fan or ECM (or G)
2OFFON
3ONOFF
4OFFOFFCycles with DH input from ABC board
. Analog Out – A standard 0-10VDC analog output is
provided. This output can be used to drive modulating dampers etc.
. Variable Speed Pump or Modulating Water Valve
- This input and output are provided to drive and
monitor a variable speed pump. The VS pump output
is a PWM signal to drive the variable speed pump. The
minimum and maximum level are set using the AID
Tool. 75% and 100% are the default settings respectively. The VS data input allows a separate PWM signal
to return from the pump giving fault and performance
information. Fault received from the variable speed
pump will be displayed as E16. Modulating Water Valve - This Variable speed PWM output is provided to
optionally drive a modulating water valve. Through advanced design a 0-10VDC valve can be driven directly
from the VS pump output. The minimum and maximum level are set in the same way as the VS pump
using the AID Tool. 75% and 100% are the default settings respectively.
4. Loop Pump Slaving - This input and output are provided so that two units can be slaved together with a
common flow center. When either unit has a call for
loop pump, both unit’s loop pump relays and variable
speed pumps are energized. The flow center then can
simply be wired to either unit. The output from one
unit should be routed to the input of the other. If daisy
chained up to 16 heat pumps can be wired and slaved
together in this fashion.
Cycles with CC1 first stage of compressor
or compressor spd 1-12
Cycles with CC2 second stage of
compressor or compressor spd 7-12
38
ENVISION2 COMPACT INSTALLATION MANUAL
2
Controls - UPC DDC Control (optional) cont.
Aurora Advanced Control Optional Sensor Kits (Future
Availability on Select Models/Configurations)
1. Energy Monitoring (Standard Sensor Kit on
‘Advanced’ models) - The Energy Monitoring Kit
includes two current transducers (blower and electric
heat) added to the existing two compressor sensors so
that the complete power usage of the heat pump can
be measured. The BACview Tool provides configuration
detail for the type of blower motor and a line voltage
calibration procedure to improve the accuracy. This
real time power usage information can be displayed on
the AID Tool and is available thru network points when
using BACnet or N2 Open.
• Compressor Current 1
• Compressor Current 2
• Fan Current
• Aux Heat Current
• Pump Selection
• Voltage
• Compressor Watts
• Fan Watts
• Aux Heat Watts
• Pump Watts (VS Only)
. Refrigerant Monitoring (optional sensor kit) - The
optional Refrigerant Monitoring Kit includes two
pressure transducers, and three temperature sensors,
heating liquid line, suction temperature and existing
cooling liquid line (FP1). These sensors allow the
measurement of discharge and suction pressures,
suction and liquid line temperatures as well as
superheat and subcooling. This information can be
displayed on the BACview Tool, or the network when
using BACnet and N2.
• Htg Liquid Line
• Clg Liquid Line
• Discharge pressure
• Suction Pressure
• Discharge Saturated Temp
• Suction Saturated Temperature
• Superheat
• SubCooling
3. Performance Monitoring (optional sensor kit) - The
optional Performance Monitoring Kit includes: three
temperature sensors, entering and leaving water,
leaving air temperature and a water flow rate sensor.
With this kit, heat of extraction and rejection will
be calculated. This requires configuration using the
BACview
• Leaving Air Temperature (supply)
• Alt Leaving Air Temperature (Supply)
• Entering Water Temperature
• Leaving Water Temperature
• Water Flow Meter
• Entering Air Temperature (from zone sensor)
• Brine Selection (water/antifreeze)
• Heat of Extraction/Rejection
Tool for selection of water or antifreeze.
39
ENVISION2 COMPACT INSTALLATION MANUAL
Controls - UPC DDC Control (optional) cont.
ZS Series RNet Sensor Overview
The ZS Series line of intelligent zone sensors provides the
function and flexibility you need to manage the conditions
important to the comfort and productivity of the zone
occupants. The ZS sensors are available in a variety of
zone sensing combinations to address your application
needs. These combinations include temperature, relative
humidity, and indoor air quality (carbon dioxide or VOCs
(Volatile Organic Compounds)). They are built to be
flexible allowing for easy customization of what the user/
technician sees. Designed to work with the Aurora UPC
controllers the ZS sensor line includes the ZS Base, ZS
Plus, ZS Pro and ZS Pro-F.
The UPC uses a proprietary communication called Rnet
to receive the space temperature from the zone sensor.
ZS Base
ZS PlusZS Pro
This is done using (2) 18 AWG twisted pair unshielded
cables for a total of 4 wires connected to the Rnet port.
The sensor gets its power from the UPC controller and
connecting multiple sensors to one UPC will allow for space
temperature averaging. The UPC can support one ZS Pro
or ZS Pro F with up to four ZS standard sensors wired to
the Rnet port on the UPC for a total of 5 zone sensors.
The sensors use a precise 10k ohm thermistor with less
than 0.18°F drift over a ten year span, this allows for less
maintenance or re-calibration after installation. The sensors
also have a hidden communication port for connecting
a BACview or local laptop that provides access to the
equipment for commissioning and maintenance. The table
below shows the features of each of the four sensors that
are currently available.
ZS Pro-F
FeaturesZS BaseZS PlusZS ProZS Pro-F
2
Temp, CO
Neutral Color
Addressable/supports daisy chaining
Hidden communication port
Mounts on a standard 2” by 4” electrical box
Occupancy Status indicator LED
Push button occupancy override
Setpoint adjust
Large, easy to read LCD
Alarm indicator
°F to °C conversion button
OptionsPart NumberPart NumberPart NumberPart Number
Temperature OnlyZSUZSUPLZSUPZSUPF
Temp with CO
Temp with HumidityZSU-HZSUPL-HZSUP-HZSUPF-H
Temp with Humidity, CO
Temp, Humidity, VOCZSU-HVZSUPL-HVZSUP-HVZSUPF-HV
Temp with VOCZSU-VZSUPL-VZSUP-VZSUPF-V
, Humidity, and VOC Options
2
2
√√√√
√√√√
√√√√
√√√√
√√√√
√√√
√√√
√√√
√√
√√
√
ZSU-CZSUPL-CZSUP-CZSUPF-C
ZSU-HCZSUPL-HCZSUP-HCZSUPF-HC
40
ENVISION2 COMPACT INSTALLATION MANUAL
Controls - UPC DDC Control (optional) cont.
RNet Sensor Physical and Electrical Data
Sensing Element Range Accuracy
Temperature (on non-Humidity models) -4° to 122° F (-20° C to 50° C) ±0.35° F (0.2° C)
Temperature (on Humidity models) 50° F to 104° F (10° C to 40° C) ±0.5° F (0.3° C)
Humidity 10% to 90% ±1.8% typical
CO2
VOC 0 to 2,000 PPM ±100 PPM
Power Requirements Sensor Type Power Required
Temperature OnlyAll Models 12 Vdc @ 8 mA
Temperature with HumidityAll Models
Temp with VOC, or Temp/VOC/Humidity All Models 12 Vdc @ 60 mA
Temp with CO2 , or Temp/ CO2/Humidity All Models
Power Supply
Communication
Local Access Port
Environmental Operating Range
Mounting Dimensions
400 to 1250 PPM
1250 to 2000 PPM
A controller supplies the Rnet sensor network with 12 Vdc @ 210 mA. Additional
power may be required for your application. See sensor ZS Installation Guide
115 kbps Rnet connection between sensor(s) and controller
15 sensors max per Rnet network; 5 sensors max per control program
For connecting a laptop computer to the local equipment for maintenance and commissioning
32° to 122° F (0° - 50° C), 10% to 90% relative humidity, non-condensing
Standard 4”x 2” electrical box using provided 6/32” x 1/2” mounting screws
±30PPM or +/-3% of reading (greater of two)
±5% of reading plus 30 PPM
12 Vdc @ 15 mA (idle) to 190 mA
(CO2 measurement cycle)
12 Vdc @ 15 mA (idle) to 190 mA
(CO2 measurement cycle)
41
ENVISION2 COMPACT INSTALLATION MANUAL
Unit Startup
Before Powering Unit, Check The Following:
NOTE: Remove and discard the compressor shipping bolts. The bolts can then be discarded.
• High voltage is correct and matches nameplate.
• Fuses, breakers and wire size correct.
• Low voltage wiring complete.
• Piping completed and water system cleaned and flushed.
• Air is purged from closed loop system.
• Isolation valves are open, water control valves or loop pumps wired.
• Condensate line open and correctly pitched.
• Transformer switched to 208V if applicable.
• Dip switches are set correctly.
• Blower rotates freely – foam shipping support has been removed.
• Blower speed correct.
• Air filter/cleaner is clean and in position.
• Service/access panels are in place.
• Return air temperature is between 50-80°F heating and 60-95°F cooling.
• Check air coil cleanliness to insure optimum performance. Clean as needed according to maintenance guidelines. To
obtain maximum performance the air coil should be cleaned before startup. A 10-percent solution of dishwasher
detergent and water is recommended for both sides of coil, a thorough water rinse should follow.
Startup Steps
NOTE: Complete the Equipment Start-Up/Commissioning Check Sheet during this procedure. Refer to thermostat
operating instructions and complete the startup procedure.
1. Initiate a control signal to energize the blower motor. Check blower operation.
2. Initiate a control signal to place the unit in the cooling mode. Cooling setpoint must be set below room temperature.
3. Cooling will energize after a time delay. Check for correct rotation of scroll compressors in 3 phase applications.
Incorrect rotation will cause low refrigerant pressures and possibly unusual noise. Switch any two power leads at the
line voltage supply.
4. Be sure that the compressor and water control valve or loop pump(s) are activated.
5. Verify that the water flow rate is correct by measuring the pressure drop through the heat exchanger using the P/T
plugs and comparing to the pressure drop table.
6. Check the temperature of both the supply and discharge water (Refer to Operating Parameters tables).
7. Check for an air temperature drop of 15°F to 25°F across the air coil, depending on the blower speed and entering
water temperature.
8. Decrease the cooling set point several degrees and verify high-speed blower operation (variable speed ECM only).
9. Adjust the cooling setpoint above the room temperature and verify that the compressor and water valve or loop
pumps deactivate.
10. Initiate a control signal to place the unit in the heating mode. Heating set point must be set above room temperature.
11. Heating will energize after a time delay.
12. Check the temperature of both the supply and discharge water (Refer to Unit Operating Parameters tables).
13. Check for an air temperature rise of 20°F to 35°F across the air coil, depending on the blower speed and entering
water temperature.
14. If auxiliary electric heaters are installed, increase the heating setpoint until the electric heat banks are sequenced on.
All stages of the auxiliary heater should be sequenced on when the thermostat is in the Emergency Heat mode. Check amperage of each element.
15. Adjust the heating setpoint below room temperature and verify that the compressor and water valve or loop
pumps deactivate.
16. During all testing, check for excessive vibration, noise or water leaks. Correct or repair as required.
17. Set system to desired normal operating mode and set temperature to maintain desired comfort level.
18. Instruct the owner/operator in the proper operation of the thermostat and system maintenance.
NOTE: Be certain to fill out and forward all warranty registration papers.
42
Operating Limits
ENVISION2 COMPACT INSTALLATION MANUAL
Operating Limits
Air Limits
Min. Ambient Air457.2457.2
Rated Ambient Air8026.77021.1
Max. Ambient Air10037.88529.4
Min. Entering Air5010.0404.4
Rated Entering Air db/wb 80.6/66.227/196820.0
Max. Entering Air db/wb110/8343/28.38026.7
Water Limits
Min. Entering Water30-1.120-6.7
Normal Entering Water50-11010-43.330-70-1.1
Max. Entering Water12048.99032.2
NOTE: Minimum/maximum limits are only for start-up conditions, and
are meant for bringing the space up to occupancy temperature. Units
are not designed to operate at the minimum/maximum conditions on
a regular basis. The operating limits are dependant upon three primary
factors: 1) water temperature, 2) return air temperature, and 3) ambient
temperature. When any of the factors are at the minimum or maximum
levels, the other two factors must be at the normal level for proper and
reliable unit operation.
Cooling -- No Hot Water Generation
Superheat Subcooling
Water Temp Rise °FAir Temp Drop
°F DB
Entering Water
Temp °F
30
50
70
90
110
NOTE: Cooling performance based on entering air temperatures of 80º F DB, 67º F WB.
Heating performance based on entering air temperature of 70º F DB.
cfm = airflow, cubic feet/minute
EWT = entering water temperature, Fahrenheit
gpm = water flow in gallons/minute
WPD = water pressure drop, PSI and feet of water
EAT = entering air temperature, Fahrenheit
(dry bulb/wet bulb)
HC = air heating capacity, MBtu/h
TC = total cooling capacity, MBtu/h
SC = sensible cooling capacity, MBtu/h
KW = total power unit input, kilowatts
HR = total heat of rejection, MBtu/h
HR
SC
cfm x 1.08
HE = total heat of extraction, MBtu/h
HWC = hot water generator capacity, MBtu/h
EER = Energy Efficient Ratio
= BTU output/Watt input
COP = Coefficient of Performance
= BTU output/BTU input
LWT = leaving water temperature, °F
LAT = leaving air temperature, °F
TH = total heating capacity, MBtu/h
LC = latent cooling capacity, MBtu/h
S/T = sensible to total cooling ratio
Refrigerant Circuit Guideline
Symptom
Under Charged System (Possible Leak)LowLowLowHighLowLowLow
Over Charged SystemHighHighHighNormalHighNormal/LowNormal
Low Air Flow HeatingHighHighHighHigh/NormalLowHighLow
Low Air Flow CoolingLowLowLowLow/NormalHighHighLow
Low Water Flow HeatingLow/Normal Low/NormalLowLowHighLowHigh
Low Water Flow CoolingHighHighHighHighLowLowHigh
High Air Flow HeatingLowLowLowLowHighLowLow
High Air Flow CoolingLowHighNormalHighLowLowNormal
High Water Flow HeatingNormalLowNormalHighNormalNormalLow
High Water Flow CoolingLowLowLowLowHighNormalLow
Low Indoor Air Temperature HeatingLowLowLowNormalHighNormalNormal/High
Low Indoor Air Temperature CoolingLowLowLowNormal/LowHighLowLow
High Indoor Air Temperature HeatingHigh HighHighNormal/High Normal/LowLowNormal
High Indoor Air Temperature CoolingHighHighHighHighLowLowHigh
Restricted TXV (Check Service Advisory)HighLowNormal/LowHighHighLowLow
Insufficient Compressor (Possible Bad Valves)LowHighLowHighNormal/HighLowLow
TXV - Bulb Loss of ChargeLowLowLowHighHighLowLow
Scaled Coaxial Heat Exchanger HeatingLowLowLowNormal/LowHighLowLow
Scaled Coaxial Heat Exchanger CoolingHighHighHighNormal/LowLowLowLow
Restricted Filter DrierCheck temperature difference (delta T) across filter drier.
Heat of Extraction (HE) - MBtu/hHeat of Rejection (HR) - MBtu/h
30°F50°F70°F90°F30°F50°F70°F90°F110°F
3/16/12
Dual Capacity
Modelgpm
Part Load
026
Full Load
Part Load
038
Full Load
Part Load
049
Full Load
Part Load
064
Full Load
Part Load
072
Full Load
Heat of Extraction (HE) - MBtu/hHeat of Rejection (HR) - MBtu/h
30°F50°F70°F90°F30°F50°F70°F90°F110°F
3.014.018.822.826.726.624.3
5.010.214.819.824.024.726.826.724.222.2
7.010.315.120.124.425.027.026.724.322.2
4.018.624.329.634.834.933.4
6.014.019.725.731.133.634.935.033.331.1
8.014.320.126.131.733.935.135.133.431.1
4.017.622.827.535.334.532.4
6.012.618.324.029.232.535.634.732.530.3
8.013.619.324.629.233.036.135.232.930.7
5.025.131.435.948.348.545.8
7.018.826.233.138.445.248.849.246.743.6
9.019.226.934.139.745.549.149.647.043.8
5.023.228.632.747.448.546.2
8.018.425.631.736.542.947.548.345.642.2
11.019.126.633.438.942.447.548.746.543.3
6.033.540.846.263.463.259.0
9.026.134.843.049.359.163.563.960.155.0
12.026.735.844.451.159.363.764.360.355.3
6.032.641.048.060.659.455.5
10.022.832.942.751.856.560.559.555.852.2
14.023.934.143.651.956.360.559.656.152.5
8.043.956.469.081.082.976.5
12.034.547.058.970.273.781.583.476.771.4
16.034.947.960.773.174.182.083.877.271.5
10.036.847.055.368.467.963.2
13.025.537.149.159.762.468.367.963.558.8
16.027.138.650.059.861.968.368.263.859.1
12.050.265.178.289.688.184.6
15.038.753.767.879.480.990.091.084.977.8
18.039.154.770.082.781.590.691.585.378.1
3/16/12
48
Troubleshooting
ENVISION2 COMPACT INSTALLATION MANUAL
Should a major problem develop, refer to the following
information for possible causes and corrective steps.
If compressor won’t run:
1.
The fuse may be open or the circuit breaker is tripped.
Check electrical circuits and motor windings for shorts
or grounds. Investigate for possible overloading. Replace
fuse or reset circuit breakers after fault is corrected.
2. Supply voltage may be too low. Check it with a
volt meter.
3. Control system may be faulty. Check control for correct
wiring of thermostat or aquastat and check the 24 volt
transformer for proper voltage.
4. Wires may be loose or broken. Replace or tighten.
5. The low pressure switch may have tripped due to one or
more of the following:
a) Heating
1) Plugged heat exchanger on source side
2) Water flow source side - (Low)
3) Water too cold source side
4) Low refrigerant
b) Cooling
1) Plugged heat exchanger on load side
2) Water flow load side - (Low)
3) Water too cold load side
4) Low refrigerant
6. The high pressure switch may have tripped due to one
or more of the following:
a) Heating
1) Plugged heat exchanger on load side
2) Low water flow load side
3) Water too warm load side
b) Cooling
1) Plugged heat exchanger on source side
2) Low water flow on source side
3) Water too warm source side
7. The compressor overload protection may be open.
8.
The internal winding of the compressor motor may
be grounded to the compressor shell. If so, replace
the compressor.
9. The compressor winding may be open or shorted.
Disconnect power. Check continuity with ohm meter. If
the winding is open, replace the compressor.
If sufficient cooling or heating is not obtained:
1. Check control for improper location or setting.
2. Check for restriction in water flow.
3. Check refrigerant subcooling and superheat for proper
refrigerant charge and expansion valve operation.
4. The reversing valve may be defective and creating a
bypass of refrigerant. If the unit will not heat, check the
reversing valve coil.
If the unit operation is noisy:
1. Check compressor for loosened mounting bolts. Make
sure compressor is floating free on its isolator mounts.
Check for tubing contact with the compressor or other
surfaces. Readjust it by bending slightly.
2. Check screws on all panels.
3. Check for chattering or humming in the contactor or
relays due to low voltage or a defective holding coil.
Replace the component.
4. Check for proper installation of vibration absorbing
material under the unit.
5. Check for abnormally high discharge pressures.
6. Compressor rotation incorrect
Aurora Control System
NOTE: Refer to the Aurora Base Control Application and
Troubleshooting Guide and the Instruction Guide: Aurora
Interface and Diagnostics (AID) Tool for additional information.
To check the unit control board for proper operation:
1. Disconnect thermostat wires at the control board.
2. Jumper the desired test input (Y1, Y2, W, O or G) to the R
terminal to simulate a thermostat signal.
3. If control functions properly:
• Check for thermostat and field control wiring (use
the diagnostic inputs mode).
4. If control responds improperly:
• Ensure that component being controlled is
functioning (compressor, blower, reversing
valve, etc.).
• Ensure that wiring from control to the component
is functioning (refer to the LED Definition table
below and use the diagnostic outputs mode).
• If steps above check properly, replace unit control.
Refrigerant Systems
To maintain sealed circuit integrity, do not install service
gauges unless unit operation appears abnormal. Compare
the change in temperature on the air side as well as the
water side to the Operating Parameters tables. If the
unit’s performance is not within the ranges listed, and the
airflow and water flow are known to be correct, gauges
should then be installed and superheat and subcooling
numbers calculated. If superheat and subcooling are outside
recommended ranges, an adjustment to the refrigerant
charge may be necessary.
NOTE: Refrigerant tests must be made with hot water
generator turned “OFF”. Verify that air and water flow rates
are at proper levels before servicing the refrigerant circuit.
49
ENVISION2 COMPACT INSTALLATION MANUAL
p
p
q
q
(
)
Startup and Troubleshooting Form
Company Name: _________________________________
Technician Name: ________________________________
Model No: ______________________________________
Owner’s Name: __________________________________
Installation Address: ______________________________
Company Phone No:______________________________
Date: __________________________________________
Serial No:_______________________________________
Open or Closed Loop: _____________________________
Installation Date: _________________________________
Check One
Start up/Check-out for new installation
1. FLOW RATE IN GPM (COAXIAL HEAT EXCHANGER)
Water In Pressure:a.______ PSI
Water Out Pressure:b.______ PSI
Pressure Drop = a - bc.______PSI
Convert Pressure Drop to Flow Rate
(refer to Pressure Drop table)d.______GPM
2. TEMPERATURE RISE OR DROP ACROSS COAXIAL HEAT EXCHANGER
Water In Temperature:e.______°Fe.______°F
Water Out Temperature:f. ______°Ff. ______°F
Temperature Difference:g.______ °Fg.______°F
3. TEMPERATURE RISE OR DROP ACROSS AIR COIL
Air In Temperature:h.______ °Fh.______°F
Air Out Temperature:i. ______ °Fi. ______°F
Temperature Difference:j. ______ °Fj. ______°F
4. HEAT OF REJECTION (HR) / HEAT OF EXTRACTION (HE) CALCULATION
HR or HE = Flow Rate x Temperature Difference x Brine Factor*
d. (above) x g. (above) x 485 for Methanol or Environol, 500 for water*
Heat of Extraction (Heating Mode) = btu/hr
Heat of Rejection (Cooling Mode) =btu/hr
Compare results to Capacity Data Tables
Note: Steps 5 through 8 need only be completed if a problem is suspected
5. WATTS
Volts:m._____
Total Amps (Comp. + Fan):n. _____AMPSn. ______ AMPS
Watts = m. x n. x 0.85o. _____WATTSo. ______ WATTS
6. CAPACITY
Cooling Capacity = HR. - (o. x 3.413)
Heating Capacity= HE. + (o. x 3.413)
7. EFFICIENCY
Cooling EER = p. / o.
Heating COP = p. / (o. x 3.413)
Suction Saturation Temperature:s. ______ °Fs. ______°F
Suction Line Temperature:t. ______ °Ft. ______°F
Superheat = t. - s.u. _____°Fu. ______ °F
Head Pressure:v. ______ PSIv. ______PSI
High Pressure Saturation Temp.: w. _____°Fw. _____°F
Liquid Line Temperature*:x. ______ °Fx. ______°F
Subcooling = w. - x.y. ______ °Fy. ______°F
* Note: Liquid line is between the coaxial heat exchanger and the expansion valve in the cooling mode;
between the air coil and the expansion valve in the heating mode.
S.H.) / SUBCOOLING (S.C.
COOLINGHEATING
VOLTSm.______VOLTS
. _____btu/hr
. _____btu/hr
. _____EER
. _____COP
COOLINGHEATING
50
ENVISION2 COMPACT INSTALLATION MANUAL
Startup/7roubleshooting Form
Dealer:
Phone #: Date:
Problem:
Model #:
Serial #:
1RWH'2127 hook up pressure gauges unless there appears to be a performance problem.
HEA7,1*&<&/( ANALYSIS
Unit Amp Draw:
°F
AIR
COIL
°F
BRINE IN
COAX
LOAD
°F
PSI
BRINE OUT
Line Voltage:
LIQUID LINE
°F
PSI
EXPANSION
VALVE
$
F
PSI
BRINE IN
COAX
SOURCE
°F
BRINE OUT
Loop:Open
Closed
°F
PSI
REVERSING
Hot Water
-
Generator
°F
VALVE
°F
PSI
°F
SUCTION
COMPRESSOR
DISCHARGE
$
F
PSI =SAT F
SAT °F=
$
Superheat
Subcooling
51
ENVISION2 COMPACT INSTALLATION MANUAL
Preventive Maintenance
Water Coil Maintenance
1. Keep all air out of the water. An open loop system
should be checked to ensure that the well head is not
allowing air to infiltrate the water line. Lines should
always be airtight.
2. Keep the system under pressure at all times. It is
recommended in open loop systems that the water
control valve be placed in the discharge line to prevent
loss of pressure during off cycles. Closed loop systems
must have positive static pressure.
NOTE: On open loop systems, if the installation is in an area
with a known high mineral content (125 PPM or greater) in
the water, it is best to establish with the owner a periodic
maintenance schedule so the coil can be checked regularly.
Should periodic coil cleaning be necessary, use standard
coil cleaning procedures which are compatible with either
the cupronickel or copper water lines. Generally, the more
water flowing through the unit the less chance for scaling.
Other Maintenance
Filters
Filters must be clean to obtain maximum performance.
They should be inspected monthly under normal operating
conditions and be replaced when necessary. Units should
never be operated without a filter.
Condensate Drain
In areas where airborne bacteria produce a slime in the
drain pan, it may be necessary to treat chemically to
minimize the problem. The condensate drain can pick up
lint and dirt, especially with dirty filters. Inspect twice a
year to avoid the
possibility of overflow.
Blower Motors
Blower motors are equipped with sealed ball bearings and
require no periodic oiling.
Hot Water Generator Coil
See Water Coil Maintenance section above.
Air Coil
The air coil must be cleaned to obtain maximum
performance. Check once a year under normal operating
conditions and, if dirty, brush or vacuum (with a brush
attachment) clean. Care must be taken not to damage the
aluminum fins while cleaning.
CAUTION: Fin edges are sharp.
Replacement Parts
Obtaining Parts
When ordering service or replacement parts, refer to the
model number and serial number of the unit as stamped on
the serial plate attached to the unit. If replacement parts are
required, mention the date of installation of the unit and the
date of failure, along with an explanation of the malfunctions
and a description of the replacement parts required.
In-Warranty Material Return
Material may not be returned except by permission
of authorized warranty personnel. Contact your local
distributor for warranty return authorization and assistance.
PSC Motor 208-230/60/114P506-0214P507B0114P508B01 14P509B01 14P510B0114P511B0114P514B01
PSC Motor 265/60/114P506-0214P507B0214P508B02 14P509B02 14P510B02Not Available
PSC Motor 230/60/3Not Available14P508B01 14P509B01 14P510B0114P511B0114P514B01
PSC Motor 460/60/3Not Available14P508B03 14P509B03 14P510B0314P511B0214P514B02
Sound Jacket92P504A0192P504A0592P504A03
Power Harness11P521A0111P781-01
Solenoid HarnessNot Available
VS ECM Motor 208-230/60/1Not Available14S551-0114S552-0114S553-01
VS ECM Motor 265/60/1Not Available14S551-0214S552-02Not Available
VS ECM Motor 230/60/3Not Available14S551-0114S552-0114S553-01
VS ECM Motor 460/60/3Not Available14S551-0214S552-0214S553-02
Blower
VS ECM Blower HousingNot Available53P512B0153P515B01
VS ECM HarnessNot Available11P607B02
VS ECM Motor &
VS ECM Power HarnessNot Available11P585B02
High Static VS ECM Motor
208-230/60/1
High Static VS ECM Motor
265/60/1
High Static VS ECM Motor
230/60/ 3
Motor & Blower
High Static VS ECM Motor
High Static VS ECM
460/60/ 3
5-Spd ECM Motor
208-230/60/1
5-Spd ECM Motor 265/60/1Not Available14P536-0214P537-02
5-Spd ECM Motor 230/60/3Not Available14P536-0114P537-01
5-Spd ECM Motor 460/60/3Not Available14P536-0314P537-03
PSC Motor 208-230/60/114P506-0214P507B0114P508B01 14P509B01 14P510B0114P511B0114P514B01
PSC Motor 265/60/114P506-0214P507B0214P508B02 14P509B02 14P510B02Not Available
PSC Motor 230/60/3Not Available14P508B01 14P509B01 14P510B0114P511B0114P514B01
PSC Motor 460/60/3Not Available14P508B03 14P509B03 14P510B0314P511B0214P514B02
Sound Jacket92P504A1692P504A0392P504A1692P504A03
Power Harness11P781-0111P781-01
Solenoid Harness11P782-0111P782-01
VS ECM Motor 208-230/60/1 14S551-0114S552-0114S553-0114S551-0114S552-0114S553-01
VS ECM Motor 265/60/114S551-0214S552-02Not Available14S551-0214S552-02Not Available
VS ECM Motor 230/60/314S551-0114S552-0114S553-0114S551-0114S552-0114S553-01
VS ECM Motor 460/60/314S551-0214S552-0214S553-0214S551-0214S552-0214S553-02
Blower
VS ECM Blower Housing53P512B0153P515B0153P512B0153P515B01
VS ECM Harness11P607B0211P607B02
VS ECM Motor &
VS ECM Power Harness11P585B0211P585B02
High Static VS ECM Motor
208-230/60/1
High Static VS ECM Motor
265/60/1
High Static VS ECM Motor
230/60/ 3
Motor & Blower
High Static VS ECM Motor
High Static VS ECM
460/60/ 3
5-Spd ECM Motor 208-
230/60/ 1
5-Spd ECM Motor 265/60/114P536-0214P537-0214P536-0214P537-02
5-Spd ECM Motor 230/60/314P536-0114P537-0114P536-0114P537-01
5-Spd ECM Motor 460/60/314P536-0314P537-0314P536-0314P537-03
PSC Motor 208-230/60/1Not AvailableNot Available
PSC Motor 265/60/1Not AvailableNot Available
PSC Motor 230/60/3Not AvailableNot Available
PSC Motor 460/60/3Not AvailableNot Available
Transformer 575/60/3Not AvailableNot Available
3 Pole Power Block12P503-0612P503-06
2 Pole Screw Term. Block12P500A0112P500A01
Freeze Protection Thermistor12P505B0312P505B03
HWL Thermistor12P505B0212P505B02
High Pressure Switch35P506B0235P506B02
Safeties
Sensors &
Low Pressure Switch35P506B0135P506B01
NOTE: Part numbers subject to change.04/11/14
026038049064072026038049064072
Not Available 14S553-0114S553-01Not AvailableNot Available 14S553-0114S553-01Not Available
Not Available 14S553-02Not AvailableNot Available 14S553-02Not Available
Not Available 14S553-0114S553-01Not AvailableNot Available 14S553-0114S553-01Not Available
Not Available 14S553-0214S553-02Not AvailableNot Available 14S553-02 14S553-02Not Available
14P536-0114P537-0114P536-0114P537-01
Dual Capacity Vertical UnitsDual Capacity Horizontal Units
55
ENVISION2 COMPACT INSTALLATION MANUAL
Notes
56
ENVISION2 COMPACT INSTALLATION MANUAL
Revision Guide
Pages:Description:Date:By:
AllUpdated with All-Aluminum Air Coils19 May 2014DS
33-41Added Aurora UPC DDC Controls19 May 2014DS
18-20Updated Compressor LRA with IntelliStart02 Aug 2013DS
AllUpdated Nomenclature to Reflect New Variable Speed ECM Motor08 Jan 2013DS
AllAdded IntelliStart Availability for 3-Phase Units08 Jan 2013DS
27Replaced Wiring Diagram with Reheat Version08 Jan 2013DS
31-34Updated Aurora Controls Description08 Jan 2013DS
51-53Updated Service Parts Lists08 Jan 2013DS
55Added Revision Guide08 Jan 2013DS
57
Manufactured by
WaterFurnace International, Inc.
9000 Conservation Way
Fort Wayne, IN 46809
www.waterfurnace.com
Product: Envision2 Compact
Type: Water Source/Geothermal Heat Pump
Size: Commercial 0.75-6 Ton