Console 0.75 to 1.5 Tons SPECIFICA TION CA TALOG

SPECIFICATION CATALOG
Console 0.75 to 1.5 Tons
Geothermal/Water Source Heat Pump
ENVISION CONSOLE SPECIFICATION CATALOG
Table of Contents
Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
AHRI Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
The Envision Series Console. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Inside the Envision Series Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-17
Application Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-20
Installation Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-22
Water Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Selection Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-24
Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-31
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Auxiliary Heat Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Blower Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Reference Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Legend and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Correction Factor Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Performance Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37-40
Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41-46
Engineering Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47-49
Revision Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
ENVISION CONSOLE SPECIFICATION CATALOG
Model Nomenclature
1-2
3
4-5
6
7
8
9
10
11
12
13
14
15-16
17
NC
S
09
L
0
1
1
C
N
N
B
5
SS
C
Vintage
B – PSC Blower & Aluminum Air Coil
C – ECM Blower & Aluminum Air Coil
Model
NC – Envision Series
Console
Non-Standard Option Details
SS – Standard Option
Cabinet Configuration
C – Chassis Only
W – Chassis with Cabinet
S – Chassis Slope Top
E – Chassis with Extended
Slope Top
Air Coil/Insulation Option
5 – AlumiSealTM/Extended Range
8 – No Coating/Standard Range
Sound Kit
A – None
B – Blanket
Unit Capacity
09, 12, 15, 18
Piping Option
L – Left
R – Right
Auxiliary Electric Heat
N – None
B – 1.0kW (09-12)
C – 2.0kW (09-12)
D – 3.0kW (15-18)
Voltage
0 – 208-230/60/1
2 – 265/60/1
9 – 115/60/1 (09 & 12)
Motorized Outside Air Damper
(Field Installed)
N – None
M – Motorized Damper
Unit Control
1 – CCM
2 – Versatec Microprocessor
4 – FX10 Std. w/o Communication
5 – FX10 w/Open N2 Com Card
6 – FX10 w/Lonworks Com Card
7 – FX10 w/BacNet Com Card
Water Coil Option
C – Copper
N - CuproNickel
Thermostat Control
1 – Unit Mounted T-Stat
2 – Remote Wall-Mounted T-Stat
NOTES: Chassis only available with left piping option.
FX10 option is only available with remote wall-mounted thermostat control.
Rev.: 02 March 2014D
Voltage Availability
Model
Voltage
09
12
15
18
115/60/1
•
•
208-230/60/1
•
•
•
•
265/60/1
•
•
•
•
1/20/14
All Envision Series product is Safety listed under UL1995 thru ETL and performance listed
with AHRI in accordance with standard 13256-1.
4
ENVISION CONSOLE SPECIFICATION CATALOG
AHRI Data
PSC & ECM Motors
AHRI/ASHRAE/ISO 13256-1
English (IP) Units
Water Loop Heat Pump
Flow Rate
Model
Cooling
EWT 86°F
Capacity
EER
Btuh
Btuh/W
Ground Water Heat Pump
Heating
EWT 68°F
Cooling
EWT 59°F
Capacity
Btuh
COP
13.4
10,500
4.4
10,200
12.3
14,400
4.3
12,400
4.9
4.4
gpm
cfm
09
2.5
300
8,500
12
3.5
350
10,500
15
4.5
450
13,500
13.6
17,000
18
5.5
500
16,200
12.5
21,000
Capacity
EER
Btuh
Btuh/W
Ground Loop Heat Pump
Heating
EWT 50°F
Cooling
EWT 77°F
Capacity
Btuh
COP
22.5
8,700
3.8
9,000
16.0
6,700
3.1
19.5
11,800
3.7
11,000
14.2
9,500
3.5
16,200
22.0
14,000
4.1
14,200
15.9
10,500
3.4
19,000
19.6
17,000
3.7
16,600
15.1
13,300
3.1
Cooling capacities based upon 80.6°F DB, 66.2°F WB entering air temperature
Heating capacities based upon 68°F DB, 59°F WB entering air temperature
All ratings based upon operation at the lower voltage of dual voltage rated models.
5
Capacity
EER
Btuh
Btuh/W
Heating
EWT 32°F
Capacity
Btuh
COP
12/14/09
ENVISION CONSOLE SPECIFICATION CATALOG
Performance Standard (AHRI/ISO/ASHRAE 13256-1)
The performance standard AHRI/ASHRAE/ISO 13256-1 became effective January 1, 2000 and replaces ARI Standards 320,
325, and 330. This new standard has three major categories: Water Loop (comparable to ARI 320), Ground Water (ARI
325), and Ground Loop (ARI 330). Although these standards are similar there are some differences:
Unit of Measure: The Cooling COP
The cooling efficiency is measured in EER (US version measured in Btuh per Watt. The Metric version is measured in a
cooling COP (Watt per Watt) similar to the traditional COP measurement.
Water Conditions Differences
Entering water temperatures have changed to reflect the centigrade temperature scale. For instance the water loop
heating test is performed with 68°F (20°C) water rounded down from the old 70°F (21.1°C).
Air Conditions Differences
Entering air temperatures have also changed (rounded down) to reflect the centigrade temperature scale. For instance
the cooling tests are performed with 80.6°F (27°C) dry bulb and 66.2°F (19°C) wet bulb entering air instead of the traditional 80°F (26.7°C) DB and 67°F (19.4°C) WB entering air temperatures. 80.6/66.2 data may be converted to 80/67
using the entering air correction table. This represents a significantly lower relative humidity than the old 80/67 of 50%
and will result in lower latent capacities.
Pump Power Correction Calculation
Within each model, only one water flow rate is specified for all three groups and pumping Watts are calculated using
the following formula. This additional power is added onto the existing power consumption.
• Pump power correction = (gpm x 0.0631) x (Press Drop x 2990) / 300
Where ‘gpm’ is waterflow in gpm and ‘Press Drop’ is the pressure drop through the unit heat exchanger at rated water
flow in feet of head.
Blower Power Correction Calculation
Blower power is corrected to zero external static pressure using the following equation. The nominal airflow is rated
at a specific external static pressure. This effectively reduces the power consumption of the unit and increases cooling
capacity but decreases heating capacity. These Watts are significant enough in most cases to increase EER and COPs
fairly dramatically over ARI 320, 325, and 330 ratings.
• Blower Power Correction = (cfm x 0.472) x (esp x 249) / 300
Where ‘cfm’ is airflow in cfm and ‘esp’ is the external static pressure at rated airflow in inches of water gauge.
ISO Capacity and Efficiency Calculations
The following equations illustrate cooling calculations:
• ISO Cooling Capacity = Cooling Capacity (Btuh) + (Blower Power Correction (Watts) x 3.412)
• ISO EER Efficiency (W/W) = ISO Cooling Capacity (Btuh) x 3.412 / [Power Input (Watts) - Blower Power Correction
(Watts) + Pump Power Correction (Watt)]
The following equations illustrate heating calculations:
• ISO Heating Capacity = Heating Capacity (Btuh) - (Blower Power Correction (Watts) x 3.412)
• ISO COP Efficiency (W/W) = ISO Heating Capacity (Btuh) x 3.412 / [Power Input (Watts) - Blower Power Correction
(Watts) + Pump Power Correction (Watt)]
Comparison of Test Conditions
Cooling
Entering Air - DB/WB °F
Entering Water - °F
Fluid Flow Rate
Heating
Entering Air - DB/WB °F
Entering Water - °F
Fluid Flow Rate
ARI 320
ISO/AHRI
13256-1
WLHP
ARI 325
ISO/AHRI
13256-1
GWHP
ARI 330
ISO/AHRI
13256-1 GLHP
80/67
85
*
80.6/66.2
86
**
80/67
50/70
**
80.6/66.2
59
**
80/67
77
**
80.6/66.2
77
**
70
70
*
68
68
**
70
50/70
**
68
50
**
70
32
**
68
32
**
Note *: Flow rate is set by 10°F rise in standard cooling test
Note **: Flow rate is specified by the manufacturer
Part load entering water conditions not shown.
WLHP = Water Loop Heat Pump; GWHP = Ground Water Heat Pump; GLHP = Ground Loop Heat Pump
Conversions:
Airflow (lps) = CFM x 0.472;
ESP (Pascals) = ESP (in wg) x 249;
WaterFlow (lps) = GPM x 0.0631;
Press Drop (Pascals) = Press Drop (ft hd) x 2990
6
ENVISION CONSOLE SPECIFICATION CATALOG
The Envision Series Console
Nearly 25 years ago WaterFurnace led the way by designing and manufacturing water source heat pumps for use
in geothermal closed loop applications. In 2003 WaterFurnace developed the first R-410A water source heat pump
product line. Now WaterFurnace extends the Envision product line with the efficient Envision Series Console. Higher
efficiency also means less heat rejected and ultimately shorter earth loops. WaterFurnace quality is well known and
respected and is a result of quality engineering and manufacturing in the state of the art Fort Wayne, Indiana plant. The
Envision Series provides:
• Highest efficiencies and lowest operating costs.
• Broadest R410A product line.
• Standard or extended range (geothermal) operation.
• Quiet operation.
• Flexible control options.
• WaterFurnace Quality.
Envision Series Console Models
NCC 09-18 (3/4-1.5 tons) Chassis Only
NCW 09-18 (3/4-1.5 tons) Flat top cabinet
NCS 09-18 (3/4-1.5 tons) Slope top cabinet
NCE 09-18 (3/4-1.5 tons) Extended Slope Top cabinet
7
ENVISION CONSOLE SPECIFICATION CATALOG
The Envision Series Console
High Efficiency
Envision Series is the highest efficiency units available.
Large oversized air coils, water to refrigerant heat exchangers and rotary compressors provide extremely efficient
operation. This efficiency means the Envision Series requires
less loop than any product on the market. This can mean
significant savings on commercial projects.
Quiet Operation
CCM
All Envision Series Console product is ARI 350 sound
rated using third party sound testing. Room Noise Criteria Curves (NC Curve) may be calculated using data from
the ARI 350 ratings giving the engineer total flexibility in
assuring a quiet environment. Please refer to our separate
catalog WaterFurnace Sound Ratings and Performance
Catalog concerning this standard and Envision sound performance data.
VERSATEC
FX10
providing both a cost advantage and features not typically
found on WLHP controls. This integration allows heat pump
monitoring sensors, status and service diagnosis faults to be
communicated thru the DDC direct to the building automation system (BAS), giving building supervisors detailed and
accurate information on every piece of equipment without
removing an access panel. Thermostat options include unit
mounted sensor or remote sensor or remote thermostat.
Standard Features
•
•
•
•
•
•
Slope and Flat top configurations
Extended cabinet options
Footprint matches “legacy” products for easy retrofits.
Attractive rounded corners heavy gauge cabinet.
Quiet rotary compressors in all models.
2-dimension refrigerant piping vibration loops to isolate
the compressor.
• All interior cabinet surfaces including the compressor
compartment are insulated with 1/2˝ [12.7mm] thick
• 1-1/2lb [681g] density, surface coated, acoustic type
glass fiber insulation.
Optional user interface for diagnostics & commissioning of
FX controls.
Flexible Control Options
Easy Maintenance and Service Advantages
The standard CCM (compressor control module) is a more
reliable replacement for electro-mechanical control applications. It features a small microprocessor board that handles
the lockout function of the unit. A second microprocessor
handles the unit mounted dial thermostat for maintaining
accurate room temperature. Thermostat options include
unit mounted or remote thermostat.
• 2 removable compressor access panels
• Separate air handler and compressor section access
panels permit service testing without bypass.
• Easy access to low voltage connector for easy
thermostat wiring (remote & thermostat option).
• Quick attach wiring harnesses are used throughout for
fast servicing.
• High and low pressure refrigerant service ports.
• Internal slide out blowers.
The optional Versatec microprocessor control board
provides complete monitoring and control with optional
field monitoring fault, status and I/O LED indication for easy
servicing. The Versatec features a robust microprocessor
control that monitors LP, HP, Condensate, field selectable
thermistor freeze detection, while providing a flexible
accessory relay and fault output scheme. Thermostat
options include unit mounted or remote thermostat.
Factory Quality
• All refrigerant brazing is performed in a nitrogen
environment.
• Computer controlled deep vacuum and refrigerant
charging system.
• All joints are leak detected for maximum leak rate of
less than 1/4 oz. per year.
• Computer bar code equipped assembly line insures all
components are correct.
• All units are computer run-tested with water to verify
both function and performance.
The optional FX10 control provides unparalleled capability
in several areas including performance monitoring, zoning,
humidity, energy management, and service diagnosis, and
then communicates it all thru standard DDC protocols like
N2, Lon and BACnet (MS/TP @ 19,200 Baud rate).
The most unique feature is integrating the FX10 into the
Envision Series as both the heat pump and DDC controller
8
ENVISION CONSOLE SPECIFICATION CATALOG
Inside the Envision Series Console
psi on the refrigerant side. Optional ThermaShield coated
water-to-refrigerant coaxial heat exchanger is available to
prevent condensation in low temperature loop operation.
Refrigerant
Envision products all feature zero ozone depletion and low
global warming potential refrigerant R-410A.
Cabinet
All units are all constructed of corrosion resistant galvanized
sheet metal with white polyester powder coat paint rated
for more than 1000 hours of salt spray. Refrigerant circuit is
designed to allow primary serviceability from the front. One
access panel allows servicing of the blower motor, blower,
and drain pan. Cabinet is designed to match "industry" foot
print for ease of replacement.
Drain Pan
Service Connections and Serviceability
All condensate connections are welded stainless steel
tubes for economical corrosion free connections. Bacteria
resistant stainless steel drain pan is designed to promote
complete drainage and will never rust or corrode. Complete
drainage helps to inhibit bacterial or microbial growth. Units
feature an internally trapped condensate line.
Two Schrader service ports are
provided in every unit. The suction
side and discharge side ports are for
field charging and servicing access. All
valves are 7/16 in. SAE connections. All
water and electrical connections are
made from the front of the unit. Unit is
designed for front access serviceability.
Compressors
High efficiency R410A rotary compressors are used on
every model. Rotary compressors (available in 208-230V
and 265V 60Hz Single Phase) provide both the highest
efficiency available and great reliability.
4-Way Reversing Valve
Envision units feature a reliable all-brass pilot operated
refrigerant reversing valve. The reversing valve operation
is limited to change of mode by the control to enhance
reliability. (Versatec and FX10 Only).
Electrical Box
Unit controls feature quick connect wiring harnesses for
easy servicing. Large 75VA transformer assures adequate
controls power for accessories.
Thermostatic Expansion Valve
All Envision models utilize a balanced port bi-directional
thermostatic expansion valve (TXV) for refrigerant
metering. This allows precise refrigerant flow in a wide
range of entering water variation (20 to 120°F [-7 to 49 °C])
found in geothermal systems.
NEW!: All-Aluminum Air Coil
Beginning in Spring of 2014, all models in the Envision Console
line began shipping with all-aluminum air coils. WaterFurnace
is the first manufacturer to offer an all-aluminum round-tubeand-fin air coil in a packaged water source heat pump. These
air coils are constructed of lanced fin and rifled tube aluminum
that is not susceptible to formicary corrosion. For additional
condensate runoff and meeting project specifications, an
optional AlumiSeal e-coating is available.
Blower Motor and Housing
High efficiency low rpm galvanized direct drive blowers
featuring 2 speed permanently split capacitor (PSC) motor.
All PSC motors have speed selection switch on the control
cover for easy speed change. All motors are vibration
isolated to reduce noise. An optional high-efficiency
3-Speed ECM motor is available.
Water to Refrigerant Coaxial Heat Exchanger Coil
Large oversized coaxial refrigerant to water heat
exchangers provide unparalleled efficiency. The coaxes
are designed for low pressure drop and low flow rates. All
coaxes are pressure rated to 450 psi water side and 600
9
ENVISION CONSOLE SPECIFICATION CATALOG
Controls
Control
General Description
CCM Control
The CCM (Compressor control module)
is a more reliable replacement for
electro-mechanical control applications.
It features a small microprocessor
board that handles the lockout function
of the unit. A second microporcessor
handles the unit mounted thermostat for
maintaining accurate room temperature.
Residential and commercial
applications requiring minimal but
reliable controls. Includes Random
Start, High and low pressure
switches and auto changeover
capability.
The Versatec Control is a
microprocessor based board that adds
the features of emergency shutdown
(ES), night setback (NS), water freeze
detection (FD), Load Shed (LS) and
condensate overflow (CO). The
Versatec Control also features Optional
Field servicing LEDs for mode, Fault and
diagnostic indication.
Residential and commercial
applications requiring more controls
features than CCM and Includes
Random Start, High and low
pressure switches, auto changeover
capability, emergency shutdown
(ES), night setback (NS), load shed
(LS), water freeze detection (FD),
and condensate overflow (CO).
Optional field servicing LED
board for mode, fault and
diagnostic indication
The FX10 microprocessor control is self
contained control featuring LP, LOC,
HP, LWT, and condensate overflow
fault modes can be displayed on BAS
system. Optional handheld Medium User
Interface (MUI) Control can be used for
additional setup or servicing. Program
customization is possible. This control is
suited for both single and dual capacity
compressors as well as PSC and
ECM2.3 blower motors.
Commercial applications
using single and dual capacity
compressors with either PSC or
ECM2.3 blower motors. Also
suitable for multi-compressor
products. Cannot be integrated
with centralized building automation
systems. Software can be
customized for specific projects.
Optional Medium User
Interface (MUI) can be
used as a
field service tool.
Standalone
FX10 Control functions as both
unitary heat pump control and DDC
communication, therefore detail
operational and fault information is
available to BAS. Other features are
same as FX10 with addition of Johnson
Controls N2 compatibility.
Same as FX10 with Johnson
Controls N2 BAS compatibility.
Optional Medium User
Interface (MUI) can be
used as a
field service tool.
Johnson
Controls
N2 network
Remote Mounted Standard
Thermostat
FX10 Control functions as both
unitary heat pump control and DDC
communication, therefore detail
operational and fault information is
available to BAS. Other features are
same as FX10 with addition of LonWorks
compatibility.
Same as FX10 with LonWorks BAS
compatibility.
Optional Medium User
Interface (MUI) can be
used as a
field service tool.
LonWorks
Remote Mounted Standard
Thermostat
FX10 Control functions as both
unitary heat pump control and DDC
communication, therefore detail
operational and fault information is
available to BAS. Other features are
same as FX10 with addition of BACnet
compatibility.
Same as FX10 with BACnet BAS
compatibility.
Optional Medium User
Interface (MUI) can be
mounted or used as a
field service tool.
BACnet - MS/
TP
(19,200 Baud
Rate)
Versatec Control
FX10
FX10 w/ N2
FX10 w/ LonWorks
FX10 w/ BACnet
Application
Display/Interface
Dial thermostat with Hi and
Low blower speeds, and
auto changeover or cont
blower selection switches.
Protocol
None
Thermostat Options
Unit Mounted Digital Dial
Thermostat
Remote Mounted Standard
Thermostat
Due to communication speed,
no more than 30 units should
be connected to a single trunk
of the network.
None
Unit Mounted Digital Dial
Thermostat
Remote Mounted Standard
Thermostat
Remote Mounted Standard
Thermostat
Remote Mounted Sensor
Remote Mounted Sensor
Remote Mounted Sensor
Remote Mounted Standard
Thermostat
Remote Mounted Sensor
• Internally mounted blower switch to choose cycled or
constant blower operation.
• High pressure and low pressure safety controls to
protect the unit components.
• Lockout circuit to shut down unit operation upon receipt
of a fault indicator from the safety controls.
• A 24 volt control circuit allows for safe and
easy diagnosis.
Standard CCM Control Features
Compressor control module (CCM) controls are standard on
the Envision console heat pump. This control features unit
mounted thermostat and switches,
Features of the standard control are:
• Easy to understand color coded thermostat
adjustment markings.
• Large, rocker type mode and blower switches.
10
ENVISION CONSOLE SPECIFICATION CATALOG
Controls cont.
The user selects either “Heat/Cool” or “Fan Only” on the
mode switch, then either “High” or “Low” at the blower
speed switch. The temperature can be controlled by
rotating the thermostat control knob.
Optional Versatec Microprocessor
Control Features
The Versatec microprocessor board provides control of
the entire unit as well as outputs for status modes, faults
and diagnostics. The control system is a microprocessorbased control board that is located in the unit control box.
This feature is available for either unit mounted controls
or optional remote wall mounted thermostat. A 9-pin low
voltage terminal strip provides all necessary terminals for
the wall mounted thermostat.
Unit Mounted Control
Startup
The unit will not operate until all the inputs and safety
controls are checked for normal operating conditions.
Fault Retry
All faults are retried twice before finally locking the unit out
to prevent nuisance service calls.
The “Fan Only” setting provides constant blower operation.
Component Sequencing Delays
In the “Heat” mode, a call for heat by the thermostat
closes the compressor contactor contacts, energizing the
compressor, which will run until the thermostat is satisfied.
Components are sequenced and delayed for optimum unit
performance.
Short Cycle Protection and Random Start
In the “Cool” mode, a call for cooling by the
thermostat energizes the reversing valve and closes the
compressor contactor contacts, energizing the compressor,
which will run until the thermostat is satisfied.
The control allows a minimum on or off time of 5 minutes
for short cycle protection. A random time delay of 0 to
30 seconds is generated after each power-up to prevent
simultaneous start up of all units within a building after the
release from an unoccupied cycle or power loss.
The emergency electric heat operation in the “Heat/Cool”
mode is subject to the setting of the internally mounted
mode switch. The optional, factory installed electric heat
will operate when the internally mounted mode switch is in
the “Emergency Heat” mode. In the “Heat” mode, a call for
heating energizes the blower and electric heater contactor,
energizing the electric heat elements and blower, which
will run until the thermostat is satisfied. When the internally
mounted mode switch is in the “Normal/Boilerless” mode
the unit operates in its normal “Heat/Cool” operation, unless
there is an aquastat controller. When the normally open
circuit of the aquastat closes and the unit is in the heating
mode, it will switch to the “Emergency Heat” condition until
the thermostat is satisfied or the aquastat opens restarting
the compressor.
Night Setback
A grounded signal to common or connecting 24 VAC to the
NS terminal will initiate the night setback mode.
Load Shed
A grounded signal to common or connecting 24 VAC to the
LS terminal places the controller into the load shed mode.
The compressor will become disabled and the blower will
start upon a thermostat call for heating or cooling.
Emergency Shutdown
A grounded signal to common or connecting 24 VAC to
the ES terminal places the controller into the emergency
shutdown mode. The compressor and blower operation are
suspended while in the emergency shutdown mode.
If either the low or high pressure safety switches are
opened, the compressor and reversing valve are disabled
by the lockout relay. Unit operation will resume only after
the voltage to the unit is interrupted or the mode switch is
placed in the “Off” position.
Condensate Overflow Protection
The board incorporates an impedance liquid sensor at
the top of the condensate drain pan. Upon a continuous
30-second sensing of the condensate, the cooling operation
of the unit is suspended.
If the electric heat limit switches are opened, the electric
heat is disabled.
Safety Controls
The microprocessor board receives separate signals from
a high pressure switch for safety, a low pressure switch
11
ENVISION CONSOLE SPECIFICATION CATALOG
Controls cont.
to prevent loss of refrigerant charge and a low suction
temperature thermistor for freeze detection. Upon a
continuous 30-second measurement of the fault (immediate
for high pressure), compressor operation is stopped.
Control Tables for Optional Versatec Microprocessor
Logic Board DIP Switch Settings
Switch
OFF
ON
SW1 - 1
Test - Selected timings sped up to facilitate troubleshooting
SW1 - 2
Loop - Closed loop freeze detection setting (15°F)
Well - Open loop freeze detection setting (30°F)
SW1 - 3
Commercial - Enables NS features when TA32U02 thermostat is used
Normal - Standard thermostat operation
SW1 - 4
IO Display* - Enables Input/Output display on external LED board
Normal* - Unit status display
SW1 - 5
Configures board for 2-speed compressor without blower
Configures board for 2-speed compressor with blower
Normal - Standard timings
Normal Control Timing
Operational Logic
Blower off delay
30 seconds
Mode
Inputs
Blower
Comp
RV
Compressor on delay
10 seconds
Htg
Y
ON
ON
OFF
Short cycle delay
5 minutes
Clg
Y,O
ON
ON
ON
Minimum compressor on time
2 minutes (except for fault condition)
Blower
G
ON
OFF
OFF
High pressure fault recognition delay
Less than 1 second
Low pressure fault recognition delay
30 seconds
Freeze detection fault recognition delay
30 seconds
Condensate overflow fault recognition delay
30 seconds
Low pressure fault bypass delay
2 minutes
Freeze detection fault bypass delay
2 minutes
Power on delay
5 minutes
Test Control Timing
Blower off delay
5 seconds
Compressor on delay
2 seconds
Short cycle delay
15 seconds
Minimum compressor on time
5 seconds (except for fault condition)
High pressure fault recognition delay
Less than 1 second
Low pressure fault recognition delay
30 seconds
Freeze detection fault recognition delay
30 seconds
Condensate overflow fault recognition delay
30 seconds
Low pressure fault bypass delay
0 seconds
Freeze detection fault bypass delay
0 seconds
Power on delay
15 seconds
Fault off time
5 minutes
Diagnostic Modes
LED
Current Fault Status
SW1 - #4 On, SW2 On
Inputs
SW1 - #4 Off, SW2 Off
Outputs
SW1 - #4 Off, SW2 On
Drain
Drain pan overflow
Y
Compressor
Water Flow
FD thermistor (loop <15°F, well <30°F)
G
Blower
High Press
High pressure >600 PSI
O
O
Low Press
Low pressure <40 PSI
ES
ES
Air Flow
Not used
NS
NS
Status
Not used
LS
LS
DHW Limit
Not used
Not used
Not used
HWD
SW2 in the On position
Off position
On position
12
ENVISION CONSOLE SPECIFICATION CATALOG
Controls cont.
Random Start
Optional FX10 Control
A delay of 1 to 120 seconds is generated after each powerup to prevent simultaneous startup of all units within a
building after the release from an unoccupied cycle or
power loss.
Emergency Shutdown
A field-applied dry contact can be used to place the control
into emergency shutdown mode. During this mode, all
outputs on the board are disabled.
Freeze Detection Limit
Main FX 10 Board
Field selectable for 15° or 30°F (-9° or -1°C)
Installation Options
The optional FX10 control provides unparalleled capability
in several areas including performance monitoring, zoning,
humidity, energy management, and service diagnosis, and
then communicates it all thru standard DDC protocols like
N2, Lon and BACnet (MS/TP @ 19,200 Baud rate).
• Standalone controlled by standard room thermostat
• Standalone with a Zone Temperature Sensor (must
have user interface to change set points beyond the
allowed +/- 5°F)
• Integrated into BAS by adding communication module
The most unique feature is integrating the FX10 into the
Envision series as both the heat pump and DDC controller
providing both a cost advantage and providing features
not typically found on WLHP controls. This integration
allows heat pump monitoring sensors, status and service
diagnosis faults to be communicated thru the DDC direct
to the building automation system (BAS), giving building
supervisors detailed and accurate information on every
piece of equipment without removing an access panel.
Accessory Outputs
Quantity 2. One cycled with blower, other with compressor.
User Interface
4 x 20 backlit LCD.
Optional Plug-in Communication Modules (compatible with standard BAS protocols)
• Open N2
• LonTalk
• BACnet (MS/TP @ 19,200 Baud rate)
FX10 Advanced Control Overview
The Johnson Controls FX10 board is specifically designed
for commercial heat pumps and provides control of the
entire unit as well as input ports for Open N2, LonTalk,
BACnet (MS/TP @ 19,200 Baud rate) communication
protocols as well as an input port for a user interface. The
user interface is an accessory item that can be used to aid
in diagnostics and unit setup. A 16-pin low voltage terminal
board provides terminals for common field connections. The
FX10 Control provides:
• Operational sequencing
• High and low-pressure switch monitoring
• General lockout
• Freeze detection
• Condensate overflow sensing
• Lockout mode control
• Emergency shutdown mode
• Random start and short cycle protection
Display
Requires DLI Card/Kit. Up to 2 displays, either 1 local and
1 remote, or 2 remote. (A 2-display configuration requires
identical displays.) Local display can be up to 3 meters
from the controller, power supply, and data communication.
Remote display can be up to 300 meters from the
controller. Remote display must be independently powered
with data communication done via 3 pole shielded cable.
Control Timing & Fault Recognition Delays
Lead compressor “ON” delay ..........................................90 seconds
(not applicable for single compressor models)
Minimum compressor “ON” time ...................................... 2 minutes
(except for fault condition)
Short cycle delay ..................................................................... 5 minutes
Random start delay .......................................................0-120 seconds
High pressure fault ................................................................. <1 second
Low pressure fault ...............................................................30 seconds
Freeze detection fault...........................................................30 seconds
Short Cycle Protection
Allows a minimum compressor “off” time of four minutes
and a minimum “on” time of two minutes.
13
ENVISION CONSOLE SPECIFICATION CATALOG
Controls cont.
Condensate overflow fault ...............................................30 seconds
Low pressure fault bypass ................................................... 2 minutes
Freeze detection fault bypass ............................................ 2 minutes
The FX10 control has unused analog and digital inputs
for field installed items such as air temperature, water
temperature, CO2 or current status switches. The control has
unused binary and PWM outputs that can be commanded
over the BAS for field use. An optional Medium User Interface
(MUI) for control setup and advanced diagnostics is available
with some mounting kits, MUIK1 - Panel mount version and
the MUIK2-Wall mount version.
Optional FX10 Microprocessor
and BAS Interface
Zone Sensors
There are two options for zone sensors that can be used
with the FX10 control. Both sensors use a Johnson controls
A99 positive temperature coefficient type sensor. The
TAXXJ02 has a set point adjustment now which will give
the end user a +/- 5°F adjustment from the set point as
well as a push button that can be used for temporary
occupancy. The control leaves the factory set to operate
with a TAXXJ02 sensor and can be changed to read the
TAXXA01 sensor through a building automation system or
with a user interface.
The FX10 is a microprocessor based control that not
only monitors and controls the heat pump but also can
communicate any of this information back to the building
automation system (BAS). This means that not only does
the control monitor the heat pump at the unit you can also
monitor and control many the features over the BAS. This
clearly puts the FX10 in a class of its own.
Standard Features
•
•
•
•
•
•
•
•
•
•
The control will enumerate all fault conditions (HP, LP, CO,
LOC, and Freeze Detection) over a BAS as well as display
them on a medium user interface (MUI). HP, LP, CO and
Freeze Detection faults can all be reset over a BAS. A
Loss Of Charge fault can not be reset or bypassed until
the problem has been corrected. A MUI is invaluable as a
service tool for the building service team.
Anti Short Cycle
High Pressure Protection
Low Pressure Protection
Freeze Detection
Loss Of Charge Detection
Random Start
Display for diagnostics
Reset Lockout at disconnect or through BAS
2 Accessory outputs
Optional BAS add-on controls
DDC Operation and Connection
Other optional network protocol boards that can be added
to the FX10 are:
• Johnson Control N2
• LonWorks
• BACnet
- MS/TP @ 19,200 Baud rate
- Limit devices to 30 on a single trunk line.
The unit can be commanded to run by a typical heat pump
thermostat or run based on heating and cooling set points
supplied by a BAS. The control board is wired with quick
connect harnesses for easy field change out of a bad
control board. All ECM2.3 variable blower speed settings
can be changed over a BAS or with a MUI. The control has
an input programmed to enable field installed emergency
heat in the event that the compressor is locked out. This
input can also be commanded on from a BAS as needed.
An alarm history can be viewed through the MUI and will
be held in memory until the unit is power cycled. Relative
humidity can be read by a 0-5VDC humidity sensor that
is displayed over the network. If you are using an ECM2.3
blower motor the control can enable dehumidification mode
based on a set point in the control. The dehumidification
set point itself can also be changed over a BAS or with a
MUI. Dehumidification mode can also be enabled by the
BAS. Because the FX10 is not factory configured to read
CO2 levels, contact the factory for application assistance.
Control and Safety Feature Details
Emergency Shutdown
The emergency shutdown mode can be activated by a
command from a facility management system or a closed
contact on BI-2. The default state for the emergency
shutdown data point is off. When the emergency shutdown
mode is activated, all outputs will be turned off immediately
and will remain off until the emergency shutdown mode is
de-activated. The first time the compressor starts after the
emergency shutdown mode has been de-activated, there will
be a random start delay present.
14
ENVISION CONSOLE SPECIFICATION CATALOG
Controls cont.
during compressor operation the compressor output (BO2) will be disabled. The compressor will not restart until the
compressor short cycle time delay has been satisfied.
Lockout Mode
Lockout mode can be activated by any of the following fault
signals: refrigerant system high pressure, refrigerant system
low pressure, freeze detection, and condensate overflow.
When any valid fault signal remains continuously active for
the length of its recognition delay, the controller will go
into fault retry mode, which will turn off the compressor.
After the Compressor short cycle delay, the compressor
will attempt to operate once again. If three consecutive
faults occur in 60 minutes during a single heating or cooling
demand, the unit will go into lockout mode, turning off the
compressor, enabling the alarm output, and setting the
blower back to low speed operation until the controller
is reset. If the control faults due to the low pressure input
(BI-3) being open during the pre-compressor startup check,
the control will go into lockout mode immediately, disabling
the compressor from starting and enabling the alarm output
(BO-6). The lockout condition can be reset by powering
down the controller, by a command from the BAS, or by the
holding the ESC and Return keys on the MUI for 5 seconds.
Condensate Overflow
The condensate overflow sensing circuit will monitor
the condensate level as a resistance input to AI-3. If the
condensate water level rises resulting in the input resistance
rising above the set point for the recognition delay period,
the condition will be recognized as a fault. The condensate
will be subjected to a (30) second lockout delay which
requires that the fault be sensed for a continuous (30)
seconds before suspending unit operation.
Alarm Output (BO-6)
The alarm output will be enabled when the control is in the
lockout mode and will be disabled when the lockout is reset.
Test Mode
Raising the zone temperature input (AI-1) reading to
180–220°F or by holding the ESC and down arrow keys on
the MUI for 5 seconds will put the control into test mode.
In test mode the random start delay and the compressor
fixed on delay time will both be shortened to 5 seconds
and the reversing valve will be allowed to cycle with out
shutting down the compressor. If an MUI is connected
to the control LED 8 will flash and the words “Test Mode
Enabled” will be shown on the LCD display when the
control is in test mode. Test mode will be disabled after a
power cycle, 30 minute timeout, or by holding the ESC and
Up arrow keys on the MUI.
Freeze Detection Limit (AI-5)
The freeze detection limit sensor will monitor the liquid
refrigerant temperature entering the water coil in the
heating mode. If the temperature drops below the freeze
detection limit trip point for the recognition delay period,
the condition will be recognized as a fault. The freeze
detection limit trip point will be factory set for 30°F and
will be field selectable for 15°F by removing a jumper wire
on BI-5. The freeze detection limit fault condition will be
bypassed 2 minutes at normal compressor startup, to allow
the refrigeration circuit to stabilize. If the freeze detection
limit sensor becomes unreliable at any time compressor
operation will immediately be suspended until the problem
is corrected. This should be displayed as an alarm on the
BAS and the MUI. This alarm will be reported a “Water Low
Temp Limit” fault.
Sequence of Operation
Power Fail Restart
When the controller is first powered up, the outputs will
be disabled for a random start delay. The delay is provided
to prevent simultaneous starting of multiple heat pumps.
Once the timer expires, the controller will operate normally.
High Pressure (BI-11)
The high-pressure switch shall be a normally closed (NC)
switch that monitors the systems refrigerant pressure. If
the input senses the high-pressure switch is open it must
disable the compressor output immediately and count the
fault. The compressor minimum on time does not apply if
the high-pressure switch opens. The compressor will not
restart until the compressor short cycle time delay has been
satisfied.
Random Start Delay
This delay will be used after every power failure, as well as
the first time the compressor is started after the control
exits the unoccupied mode or the emergency shutdown
mode. The delay should not be less than 1 second and not
longer than 120 seconds. If the control is in test mode the
random start delay will be shortened to 5 seconds.
Low Pressure (BI-3)
The low-pressure switch shall be a normally closed (NC)
switch that monitors the systems refrigerant pressure. The
input shall be checked 15 seconds before compressor start
up to be sure the pressure switch is closed and then ignored
for the first 2 minutes after the compressor output (BO-2) is
enabled. If the switch is open continuously for (30) seconds
15
ENVISION CONSOLE SPECIFICATION CATALOG
Controls cont.
Compressor Fixed On Delay Time
Cooling Cycle
The Compressor Fixed On Delay Time will ensure that the
compressor output (B02) is not enabled for (90) seconds
after the control receives a call to start the compressor.
This delay is adjustable from 30 – 300 seconds over a BAS
or a MUI. If the control is in test mode the Compressor
Fixed On Delay Timer will be shortened to 5 seconds.
On a call for cooling, the blower enable output and
accessory output 2 will turn on immediately after the
random start delay timer has been satisfied. If the
compressor short cycle time delay has been satisfied,
the compressor will turn on after the blower enable and
accessory output 2 are on and the fixed compressor start
delay timers have been satisfied.
Compressor Minimum On Delay
Set Point Control Mode
In set point control mode the reversing valve output
will be enabled. As the temperature falls below the
cooling set point and begins to operate in the cooling
proportional band, the low capacity compressor output
(BO-2) will be enabled. A PI loop in the programming
of the control will determine when the full capacity
compressor output (BO-4) is to be enabled. The
compressor must be operating in low capacity for
a minimum of 30 seconds before the full capacity
compressor output can be enabled.
The compressor minimum on delay will ensure that the
compressor output is enabled for a minimum of (2)
minute each time the compressor output is enabled. This
will apply in every instance except in the event the high
pressure switch is tripped or emergency shutdown then the
compressor output will be disable immediately.
Compressor Short Cycle Delay Time
The compressor short cycle time delay will ensure that
the compressor output will not be enabled for a minimum
of (5) minutes after it is disabled. This allows for the
system refrigerant pressures to equalize after the
compressor is disabled.
Thermostat Control Mode
In thermostat mode the compressor will be cycled
based on Y1 calls from a room thermostat. When
the control receives a Y1 command (BI-7) from the
thermostat, the compressor output (BO2) will be
enabled. During the cooling cycle the reversing valve
will be commanded into the “ON” position.
Heating Cycle
On a call for heating, the blower enable output and
accessory output 2 will turn on immediately after the
random start delay timer has been satisfied. If the
compressor short cycle time delay has been satisfied,
the compressor will turn on after the blower enable and
accessory output 2 are on and the fixed compressor start
delay timers have been satisfied.
Emergency Heat/Network Enabled Output (BO5)
This output is set from the factory to enable/disable
emergency heat. If a problem occurs with the unit resulting
in the compressor being locked out in heating mode, the
control will automatically enable this output to turn on field
installed electric heat. This output is interlocked with the
blower proving input BI-6 (Blower proving sensors must
be field supplied and installed). BI-6 must be connected to
PB2 position 3 (see unit schematic) in the field if no blower
proving sensor is desired. There is a configurable parameter
available through a BAS network that must be enabled if
this output is to be commanded over the BAS network.
Auxiliary heat output can be controlled over the BAS.
Set Point Control Mode
In set point control mode the reversing valve output
will be disabled. As the temperature drops below the
heating set point and begins to operate in the heating
proportional band, the low capacity compressor output
(BO-2) will be enabled. A PI loop in the programming
of the control will determine when the full capacity
compressor output (BO-4) is to be enabled. The
compressor must be operating in low capacity for
a minimum of 30 seconds before the full capacity
compressor output can be enabled.
MUI Alarm History Reporting
If a fault occurs the fault will be recorded in history for
display on the medium user interface in the History Menu.
Each fault type will be displayed in the history menu with
a number between 0 and 3. A reading of 3+ will mean that
fault has occurred more than three times in the past. The
history menu can be cleared with a power cycle only. Alarm
date and time are not included in the history.
Thermostat Control Mode
In thermostat mode the compressor will be cycled
based on Y1 calls from a room thermostat. When
the control receives a Y1 command (BI-7) from the
thermostat, the compressor output (BO2) will be
enabled. During the heating cycle the reversing valve
will be commanded into the off position.
16
ENVISION CONSOLE SPECIFICATION CATALOG
Controls cont.
Inputs and Outputs Configuration
Field Selectable Options
Freeze Detection Limit Set Point (BI-5)
The freeze detection limit set point input allows you to
adjust the freeze detection limit set point (AI-5). When the
jumper is installed on BI-5 (Wire #24) the freeze detection
limit set point is factory set for 30°F. When the jumper on
BI-5 (Wire #24) is removed the freeze detection limit set
point will be 15°F.
Accessory Outputs (BO-7 and BO-8)
Accessory Output 1 will be energized 90 seconds prior to
the compressor output being energized. Accessory Output
2 will be energized with the fan output (BO-1). When
the corresponding compressor output is turned off the
accessory output will be deactivated immediately. These
outputs are selectable for normally open or normally closed
operation through the Medium User interface or through the
Building Automation System.
SINGLE and DUAL STAGE WATER-TO-AIR
Input Name
Zone Temp 1
Relative Humidity Input
Condensate Level
Universal Temp Input
Water Coil Low Temperature Limit
Warm/Cool Adjust and Temp Occ
Input
AI 1
AI 2
AI 3
AI 4
AI 5
AI 6
Occupied
Emergency Shutdown
Stage 1 Low Pressure
Network Viewable Input 1
Water Coil Low Temp Limit Set Point
Network Viewable Input 2
Thermostat Y1
Thermostat Y2
Thermostat O
Thermostat G
Stage 1 High Pressure
Compressor Proving
XP10 Expansion Card
Input Name
Unused
Unused
Unused
Unused
BI 1
BI 2
BI 3
BI 4
BI 5
BI 6
BI 7
BI 8
BI 9
B10
BI11
BI12
Input
AI 1
AI 2
AI 3
AI 4
Output Name
Fan Enable
Comp – Low Capacity
Reversing Valve
Comp – Full Capacity
Network Output/EH Output
Alarm
Accessory 1 Output
Accessory 2 Output
Network Controlled Output
Output
BO1
BO2
BO3
BO4
BO5
BO6
BO7
BO8
B09
ECM2 Fan
Network Controlled Output
PWM1
PWM2
Output Name
Unused
Unused
Unused
Unused
Output
BO 1
BO 2
BO 3
BO 4
Control Accessories
Zone Sensors
• TAXXJ02 Room Command Module
• TAXXA01 LCD Room Command Module
• A99 Sensor
MUI (LCD User interface) for diagnostics
and commissioning.
• MUIK3 - Panel Mount, Portable
• MUIK4 - Wall Mount
17
ENVISION CONSOLE SPECIFICATION CATALOG
Application Notes
needed basis"- perfect for speculative buildings. Installed
costs are low since units are self-contained and can be
located adjacent to the occupied space, requiring minimal
ductwork. Maintenance can be done on individual units
without system shut-down. Conditions remain comfortable
since each unit operates separately, allowing cooling in
one area and heating in another. Tenant spaces can be
finished and added as needed. Power billing to tenants
is also convenient since each unit can be individually
metered: each pays for what each uses. Nighttime and/or
weekend uses of certain areas are possible without heating
or cooling the entire facility. A decentralized system also
means if one unit should fault, the rest of the system will
continue to operate normally, as well as eliminating air
cross-contamination problems and expensive high pressure
duct systems requiring an inefficient electric resistance
reheat mode.
The Closed Loop Heat Pump Concept
The basic principle of a water source heat pump is the
transfer of heat into water from the space during cooling,
or the transfer of heat from water into the space during
heating. Extremely high levels of energy efficiency are
achieved as electricity is used only to move heat, not to
produce it. Using a typical WaterFurnace Envision Series,
one unit of electricity will move four to five units of heat.
When multiple water source heat pumps are combined
on a common circulating loop, the ultimate in energy
efficiency is created: The WaterFurnace units on cooling
mode are adding heat to the loop which the units in
heating mode can absorb, thus removing heat from the
area where cooling is needed, recovering and redistributing
that heat for possible utilization elsewhere in the system. In
modern commercial structures, this characteristic of heat
recovery from core area heat generated by lighting, office
equipment, computers, solar radiation, people or other
sources, is an important factor in the high efficiency and
low operating costs of WaterFurnace closed source heat
pump systems.
The Envision Approach
There are a number of proven choices in the type of
Envision Series system which would be best for any given
application. Most often considered are:
Vertical - Closed Loop/Ground Source
Return Water
Heater/
Rejector
Pumps
Envision
Unit
Envision
Unit
Envision
Unit
Envision
Unit
Envision
Unit
Envision
Unit
Supply Water
In the event that a building's net heating and cooling
requirements create loop temperature extremes, Envision
Series units have the extended range capacity and
versatility to maintain a comfortable environment for
all building areas. Excess heat can be stored for later
utilization or be added or removed in one of three ways; by
ground-source heat exchanger loops: plate heat exchangers
connected to other water sources, or conventional cooler/
boiler configurations. Your WaterFurnace representative
has the expertise and computer software to assist in
determining optimum system type for specific applications.
• Closed Loop/Ground-Source Systems utilize the stable
temperatures of the earth to maintain proper water source
temperatures (via vertical or horizontal closed loop heat
exchangers) for Envision Series extended range heat
pump system. Sizes range from a single unit through many
hundreds of units. When net cooling requirements cause
closed loop water temperatures to rise, heat is dissipated
into the cooler earth through buried high strength plastic
pipe "heat exchangers." Conversely if net space heating
demands cause loop heat absorption beyond that heat
recovered from building core areas, the loop temperature
will fall causing heat to be extracted from the earth. Due to
the extended loop temperatures, AHRI/ISO 13256-1 Ground
Loop Heat Pumps are required for this application.
The Closed Loop Advantage
A properly applied water source heat pump system offers
many advantages over other systems. First costs are
low because units can be added to the loop on an "as
18
ENVISION CONSOLE SPECIFICATION CATALOG
Application Notes cont.
Plate Heat Exchanger - Closed Loop/Ground Water
Because auxiliary equipment such as a fossil fuel boiler
and cooling tower are not required to maintain the loop
temperature, operating and maintenance costs are very
low. Ground-source systems are most applicable in
residential and light commercial buildings where both
heating and cooling are desired, and on larger envelope
dominated structures where core heat recovery will not
meet overall heating loads. Both vertical and horizontally
installed closed-loops can be used. The land space required
for the "heat exchangers" is 100-250 sq. ft./ton on vertical
(drilled) installations and 750-1500 sq. ft./ton for horizontal
(trenched) installations. Closed loop heat exchangers can
be located under parking areas or even under the building
itself.
On large multi-unit systems, sizing the closed loop heat
exchanger to meet only the net heating loads and assisting
in the summer with a closed circuit cooling tower may be
the most cost effective choice.
• Closed Loop/Ground Water Plate Heat Exchanger
Systems utilize lake, ocean, well water or other water
sources to maintain closed loop water temperatures in
multi-unit Envision systems. A plate frame heal exchanger
isolates the units from any contaminating effects of the
water source, and allows periodic cleaning of the heat
exchanger during off peak hours.
Surface Water - Closed Loop/Ground Source
Operation and benefits are similar to those for groundsource systems. Due to the extended loop temperatures,
AHRI/ISO 13256-1 Ground Loop Heat Pumps are required
for this application. Closed loop plate heat exchanger
systems are applicable in commercial, marine, or industrial
structures where the many benefits of a water source heat
pump system are desired, regardless of whether the load is
heating or cooling dominated.
• Closed Loop/Ground-Source Surface Water Systems also
utilize the stable temperatures of Surface Water to maintain
proper water source temperatures for Envision Series
extended range heat pump systems. These systems have
all of the advantages of horizontal and vertical closed loop
systems. Due to the extended loop temperatures, AHRI/
ISO 13256-1 Ground Water or Ground Loop Heat Pumps are
required for this application.
In cooling dominated structures, the ground-source surface
water systems can be very cost effective especially where
local building codes require water retention ponds for short
term storage of surface run-off. Sizing requirements for the
surface water is a minimum of 500 sq. ft./ton of surface
area at a minimum depth of 8 feet. WaterFurnace should be
contacted when designs for heating dominated structures
are required.
19
ENVISION CONSOLE SPECIFICATION CATALOG
Application Notes cont.
Cooler/Boiler - Closed Loop
• Closed Loop /Cooler-Boiler Systems utilize a closed heat
recovering loop with multiple water source heat pumps
in the more conventional manner. Typically a boiler is
employed to maintain closed loop temperatures above
60°F and a cooling tower to maintain loop temperatures
below 90°F. These systems are applicable in medium
to large buildings regardless of whether the load is
heating or cooling dominated. Due to the moderate loop
temperatures, AHRI/ISO 13256-1 Water Loop Heat Pumps
are required for this application.
20
ENVISION CONSOLE SPECIFICATION CATALOG
Installation Notes
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.
Typical Unit Installation
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 and electrical connection(s). Any access panel screws
that would be difficult to remove after the unit is installed
should be removed prior to setting the unit. 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 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.
Installing Console Units
Console units are available in left or right air return
configurations. Units should be mounted level on the floor. It
is not necessary to anchor the unit to the floor.
;=B=@7H32
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1=<A=:31/07<3B
0/19>:/B3
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2/;>3@
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4CA323:31B@71/:
27A1=<<31B=>B7=</:
1=<A=:3
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4=@E/B3@1=<<31B7=<
E/B3@
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4:==@>3<3B@/B7=<
4=@E/B3@1=<<31B7=<
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0/::D/:D3A
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1=<23<A/B3
2@/7<:=1/B7=<
1=<A=:3
1/07<3B
21
ENVISION CONSOLE SPECIFICATION CATALOG
Installation Notes cont.
system should include pressure/temperature ports for
serviceability. 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. Check carefully for water leaks.
Water Piping
Piping is usually design as ‘reverse return’ to equalize flow
paths through each unit. A short flexible pressure rated
hose is used to make connection to the fixed building
piping system. This hose is typically stainless steel braid
and includes a swivel fitting on one end for easy removal
and is flexible to help isolate the unit for quieter operation.
Isolation valves for servicing, y-strainers for filtering,
and memory-stop flow valve or a balancing valve can be
provided for consistent water flow through the unit.
Condensate Drain
All unit source water connections 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. The open and closed loop piping
On console units, the internal condensate drain assembly
consists of a drain tube which is connected to the drain
pan. A condensate tube is inside all cabinets as a trapping
loop; therefore, an external trap is not necessary.
Water Quality
In ground water situations where scaling could be heavy
or where biological growth such as iron bacteria will be
present, a closed loop system is recommended. The heat
exchanger coils in ground water systems may, over a period
of time, lose heat exchange capabilities due to a buildup
of mineral deposits inside. These can be cleaned, but only
by a qualified service mechanic, as special solutions and
pumping equipment are required. Hot water generator coils
can likewise become scaled and possibly plugged. In areas
Material
pH
Scaling
Acidity/Alkalinity
Calcium and
Magnesium Carbonate
Hydrogen Sulfide
Corrosion
Iron Fouling
(Biological Growth)
Sulfates
Chlorine
Chlorides
Carbon Dioxide
Ammonia
Ammonia Chloride
Ammonia Nitrate
Ammonia Hydroxide
Ammonia Sulfate
Total Dissolved Solids (TDS)
LSI Index
Iron, FE2+ (Ferrous)
Bacterial Iron Potential
Iron Oxide
Suspended Solids
Erosion
Threshold Velocity
(Fresh Water)
NOTES: Grains = ppm divided by 17
mg/L is equivalent to ppm
with extremely hard water, the owner should be informed
that the heat exchanger may require occasional flushing.
Units with cupronickel heat exchangers are recommended
for open loop applications due to the increased resistance
to build-up and corrosion, along with reduced wear caused
by acid cleaning. Failure to adhere to the guidelines in the
water quality table could result in the loss of warranty.
Copper
7-9
(Total Hardness)
less than 350 ppm
Less than 0.5 ppm (rotten egg
smell appears at 0.5 ppm)
Less than 125 ppm
Less than 0.5 ppm
Less than 20 ppm
Less than 50 ppm
Less than 2 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 1000 ppm
+0.5 to -0.5
90/10 Cupronickel
7-9
(Total Hardness)
less than 350 ppm
316 Stainless Steel
7-9
(Total Hardness)
less than 350 ppm
10 - 50 ppm
Less than 1 ppm
Less than 125 ppm
Less than 0.5 ppm
Less than 125 ppm
10 - 50 ppm
Less than 2 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 0.5 ppm
1000 - 1500 ppm
+0.5 to -0.5
Less than 200 ppm
Less than 0.5 ppm
Less than 300 ppm
10 - 50 ppm
Less than 20 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 0.5 ppm
1000 - 1500 ppm
+0.5 to -0.5
< 0.2 ppm
< 0.2 ppm
< 0.2 ppm
Less than 1 ppm, above this
level deposition will occur
Less than 10 ppm and filtered
for max. of 600 micron size
Less than 1 ppm, above this
level deposition will occur
Less than 10 ppm and filtered
for max. of 600 micron size
Less than 1 ppm, above this
level deposition will occur
Less than 10 ppm and filtered
for max. of 600 micron size
< 6 ft/sec
< 6 ft/sec
< 6 ft/sec
2/22/12
22
ENVISION CONSOLE SPECIFICATION CATALOG
Selection Example
Step 4: Enter tables at the design water flow and water
temperature. Read the total and sensible cooling capacities
(Note: interpolation is permissible, extrapolation is not).
To achieve optimal performance, proper selection of each
heat pump is essential. A building load program should
be used to determine the heating and cooling load of
each zone. A computer software selection program can
then be used to develop an accurate and complete heat
pump schedule. Software can be obtained from your local
WaterFurnace representative.
Step 5: Read the heating capacity. If it exceeds the
design criteria it is acceptable. It is quite normal for water
source heat pumps to be selected on cooling capacity
only since the heating output is usually greater than the
cooling capacity.
While a computer software program is the easiest and most
accurate method to size and select equipment, however,
selection can still be accomplished manually using this
manual and the following selection procedure. Sizing
so that the actual sensible capacity of the equipment
will satisfy the sensible capacity of the zone is the
recommended method for best results.
Step 6: Determine the correction factors associated with
the variable factors of dry bulb and wet bulb.
Corrected Total Cooling = tabulated total cooling x wet
bulb correction.
Corrected Sensible Cooling = tabulated sensible cooling x
wet/dry bulb correction.
Boiler/Tower Application
Step 7: Compare the corrected capacities to the load
requirements. Normally if the capacities are within 10%
of the loads, the equipment is acceptable. It is better
to undersize than oversize, as undersizing improves
humidity control, reduces sound levels and extends the
life of the equipment.
Typical boiler/tower application will result in entering water
temperatures of 60-90°F with 70°F for heating and 90°F for
cooling. Water to refrigerant insulation option would not be
required. Flow rates are 2.5 to 3 gpm per ton with 2.5 gpm
per ton often representing an economical design point.
Geothermal Application
Step 8: When complete, calculate water temperature
rise and assess the selection. If the units selected are not
within 10% of the load calculations, then review what effect
changing the GPM, water temperature and/or air flow and
air temperature would have on the corrected capacities. If
the desired capacity cannot be achieved, select the next
larger or smaller unit and repeat the procedure. Remember,
when in doubt, undersize slightly for best performance.
Typical geothermal application can result in a wide entering
water temperature range of 30-100°F. Typically minimum
heating entering water temperatures can range from 30
to 50°F depending upon loop type and geographical
location. Cooling performance should be calculated
using a maximum loop temperature of 100°F in most loop
applications. Water flow is typically 2.5 to 3 gpm per ton
with 3 gpm per ton recommended with the more extreme
loop temperatures. PLEASE NOTE THAT WATER COIL
INSULATION OPTION SHOULD BE SELECTED WHEN
ENTERING WATER TEMPERATURES ARE EXPECTED TO
BE BELOW 45-50°F.
Example Equipment Selection - Cooling
1. Load Determination:
Assume we have determined that the appropriate cooling
load at the desired dry bulb 75°F and wet bulb 60°F
conditions is as follows:
Total Cooling ................................................................14,800 BTUH
Sensible Cooling .......................................................... 11,200 BTUH
Entering Air Temp ................. 75°F Dry Bulb / 60°F Wet Bulb
Geothermal Selection Example
Step 1: Determine the actual heating and cooling loads at
the desired dry bulb and wet bulb conditions.
2. Design Conditions:
Similarly, we have also obtained the following design
parameters:
Entering Water Temp.............................................................. 100°F
Water Flow (Based upon 10°F rise in temp.) 5.5 GPM
Air Flow Required ..............................................................450 CFM
Step 2: Obtain the following de sign parameters: Entering
water temperature, water flow rate in GPM, air flow in CFM,
water flow pressure drop and design wet and dry bulb
temperatures. Air flow CFM should be between 300 and
450 CFM per ton. Unit water pressure drop should be kept
as close as possible to each other to make water balancing
easier. Go to the appropriate tables and find the proper
indicated water flow and water temperature.
3, 4 & 5. HP Selection:
After making our preliminary selection (NC18), we enter
the tables at design water flow and water temperature and
read:
Total Cooling, Sens. Cooling and Heat of Rej. capacities:
Total Cooling ................................................................16,600 BTUH
Step 3: Select a unit based on total and sensible cooling
conditions. Select a unit which is closest to, but no larger
than, the actual cooling load.
23
ENVISION CONSOLE SPECIFICATION CATALOG
Selection Example cont.
8. Water Temperature Rise Calculation & Assessment:
Note: 500 = parameters for water & 485 = parameters for
antifreeze solutions to 30% weight.
Sensible Cooling .........................................................12,600 BTUH
Heat of Rejection .......................................................21,400 BTUH
6 & 7. Entering Air and Airflow Corrections:
Next, we determine our correction factors. (Refer to
Correction Factor Tables - Air Flow and Entering Air
correction tables — using 450 cfm. or 450÷500 nom. = 90%).
Corrected Total Cooling = 16,600 x 0.982 x 0.897 = 14,622
Corrected Sens Cooling = 12,600 x 0.933 x 0.995 = 11,697
Corrected Heat of Reject = 21,400 x 0.980 x 0.895 = 18,770
When we compare the Corrected Total Cooling and
Corrected Sensible Cooling figures with our load
requirements stated in Step 1, we discover that our
selection is within +10% of our sensible load requirement.
Further more, we see that our Corrected Total Cooling
figure is within 1,000 Btuh of the actual indicated load.
6@+#f5>;fBW\B]cb
6@
= BW\B]cb]`∆B@WaS
#f5>;
&%%
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#f##
Antifreeze Corrections
Catalog performance can be corrected for antifreeze use. Please use the following table and note the example given.
Antifreeze Type
Antifreeze
% by wt
EWT - degF [DegC]
Water
Ethylene Glycol
Propylene Glycol
Ethanol
Methanol
Cooling
Capacity
Heating
Capacity
Pressure Drop
90 [32.2]
30 [-1.1]
30 [-1.1]
0
1.000
1.000
1.000
10
0.991
0.973
1.075
20
0.979
0.943
1.163
30
0.965
0.917
1.225
40
0.955
0.890
1.324
50
0.943
0.865
1.419
10
0.981
0.958
1.130
20
0.969
0.913
1.270
30
0.950
0.854
1.433
40
0.937
0.813
1.614
50
0.922
0.770
1.816
10
0.991
0.927
1.242
20
0.972
0.887
1.343
30
0.947
0.856
1.383
40
0.930
0.815
1.523
50
0.911
0.779
1.639
10
0.986
0.957
1.127
20
0.970
0.924
1.197
30
0.951
0.895
1.235
40
0.936
0.863
1.323
50
0.920
0.833
1.399
Warning: Gray area represents antifreeze concentrations greater than 35% by weight and
should be avoided due to the extreme performance penalty they represent.
Antifreeze Correction Example
Antifreeze solution is Propylene Glycol 20% by weight. Determine the corrected heating and cooling performance at 30°F
and 90°F respectively as well as pressure drop at 30°F for an Envision Console Series NC*18.
The corrected cooling capacity at 90°F would be: 17,100 MBtuh x 0.969 = 16,569 MBtuh
The corrected heating capacity at 30°F would be: 14,300 MBtuh x 0.913 = 13,056 MBtuh
The corrected pressure drop at 30°F and 5.5 GPM would be: 18.2 feet of head x 1.270 = 23.1 feet of head
24
ENVISION CONSOLE SPECIFICATION CATALOG
Dimensional Data - Flat Top Cabinet
NCW09-18
@756B@3BC@<
:34B@3BC@<
B=>
4
2
3
/
0
5
/
0
47:B3@0@/193B
47:B3@0@/193B
1
8
6
7
23B/7:0
23B/7:0
4@=<B
BE7AB3FB3<232B/0
0/19/<24=@B6C<B7:
B/00@3/9A=44
=<:G0@3/9=44
B/0A/;3A723/A
5@7::3:72/AA6=E<
BE7AB3FB3<232
B/00/19/<2
4=@B6C<B7:
B/00@3/9A=44
=<:G0@3/9=44
B/0A/;3A723/A
5@7::3:72/AA6=E<
@3;=D3>:/AB71AB@7>
4@=;0@=93<B/0/<2
@3>:/13=<0@=93<
3253=4:35/AA6=E<
@3;=D3>:/AB71AB@7>
4@=;0@=93<B/0/<2
@3>:/13=<0@=93<
3253=4:35/AA6=E<
Overall Cabinet
Flat Top
Configuration
09-12
15-18
A
B
C
D
Width Depth Height Grille Lid
E
F
Grille
Length
Grille
Width
G
H
I
J
in.
cm.
in.
45.0 10.8
114.3 27.3
50.0 12.3
25.7
65.2
25.7
9.2
23.4
9.2
35.0
88.9
35.0
6.1
15.6
6.1
2.3 44.1 10.3
5.8 112.0 26.0
3.3 49.1 11.8
4.3
10.9
4.3
cm.
127.0 31.1
65.2
23.4
88.9
15.6
8.3 124.7 29.8
10.9
25
ENVISION CONSOLE SPECIFICATION CATALOG
Dimensional Data - Slope Top Cabinet
NCS09-18
@756B@3BC@<
:34B@3BC@<
B=>
4
2
3
0
5
/
/
0
47:B3@0@/193B
47:B3@0@/193B
1
23B/7:/
23B/7:0
8
BE7AB3FB3<232B/0
0/19/<24=@B6C<B7:
B/00@3/9A=44
=<:G0@3/9=44
B/0A/;3A723/A
5@7::3:72/AA6=E<
BE7AB3FB3<232B/0
0/19/<24=@B6C<B7:
B/00@3/9A=44
=<:G0@3/9=44
B/0A/;3A723/A
5@7::3:72/AA6=E<
7
6
4@=<B
@3;=D3>:/AB71AB@7>
4@=;0@=93<B/0/<2
@3>:/13=<0@=93<
3253=4:35/AA6=E<
@3;=D3>:/AB71AB@7>
4@=;0@=93<B/0/<2
@3>:/13=<0@=93<
3253=4:35/AA6=E<
Slope Top
Configuration
Overall Cabinet
A
B
C
D
Width Depth Height Grille Lid
E
Grille
Length
F
Grille
Width
G
H
I
J
09-12
in.
cm.
45.0 11.1
114.3 28.2
28.6
72.6
9.2
23.4
35.0
88.9
6.1
15.6
2.8 44.1 10.3
7.2 112.0 26.0
4.3
10.9
15-18
in.
cm.
50.0 12.6
127.0 32.0
29.1
73.9
9.2
23.4
35.0
88.9
6.1
15.6
2.5 49.1 11.8
6.4 124.7 29.8
4.3
10.9
26
ENVISION CONSOLE SPECIFICATION CATALOG
Dimensional Data - Extended Slope Top Cabinet
NCE09-18
@756B@3BC@<
B=>
:34B@3BC@<
4
2
3
0
5
/
47:B3@0@/193B
/
47:B3@0@/193B
1
0
8
7
6
23B/7:/
BE7AB3FB3<232B/0
0/19/<24=@B6C<B7:
B/00@3/9A=44
=<:G0@3/9=44
B/0A/;3A723/A
5@7::3:72/AA6=E<
23B/7:0
BE7AB3FB3<232B/0
0/19/<24=@B6C<B7:
B/00@3/9A=44
=<:G0@3/9=44
B/0A/;3A723/A
5@7::3:72/AA6=E<
4@=<B
@3;=D3>:/AB71AB@7>
4@=;0@=93<B/0/<2
@3>:/13=<0@=93<
3253=4:35/AA6=E<
@3;=D3>:/AB71AB@7>
4@=;0@=93<B/0/<2
@3>:/13=<0@=93<
3253=4:35/AA6=E<
Overall Cabinet
Ext. Slope Top
Configuration
09-12
15-18
A
B
C
D
Width Depth Height Grille Lid
E
Grille
Length
F
Grille
Width
G
H
I
J
in.
50.0 12.6
29.1
9.2
35.0
6.1
2.4
49.1 12.0
4.3
cm.
in.
cm.
127.0 32.0
55.0 12.6
139.7 32.0
73.9
29.1
73.9
23.4
9.2
23.4
88.9
35.0
88.9
15.6
6.1
15.6
6.1 124.7 30.5
2.5 54.1 11.8
6.4 137.4 29.8
10.9
4.3
10.9
27
ENVISION CONSOLE SPECIFICATION CATALOG
Dimensional Data - Right Return Controls Detail
6/<2G0=F
1=<B@=:>/<3:
@3;=D34=@/113AA
B=1=<B@=:0=F
=>B7=</:
4CA32
<=<4CA32
27A1=<<31B
4/<=>B7=<AE7B16
3:31B@7163/B;=23
<=@;/:0=7:3@:3AA
AE7B16=>B7=</:
:=ED=:B/53
B3@;7</:A
4F@3;=B3E/::
AB/B=>B7=<A=<:G
2/;>3@=<=44AE7B16
1=<23<A/B3
2@/7<1=<<31B7=<
1=;>@3AA=@
/113AA>/<3:
@3;=D324=@
1:/@7BG
0=B6A723A
=>B7=</:
0/::D/:D3A
47:B3@
=>B7=</:0/19>:/B3
@3?C7@324=@
2/;>3@7<AB/::/B7=<
=CBA723/7@
2/;>3@=>B7=<
473:27<AB/::32
28
=>B7=</:
6=A397BA
ENVISION CONSOLE SPECIFICATION CATALOG
Dimensional Data - Right Return Chassis
Data = inches (cm)
Models 09-12
Models 15-18
37.88
(96.2)
9.38
(23.8)
CONTROL PANEL
42.88
(108.9)
8.88
(22.6)
28.5
(72.4)
CONTROL PANEL
34.0
(86.4)
1.5
(3.8)
1.5
(3.8)
BLOWER ACCESS PANEL
BLOWER ACCESS PANEL
COMPRESSOR
ACCESS PANEL
COMPRESSOR
ACCESS PANEL
1.5
(3.8)
1.5
(3.8)
4.37
(11.1)
4.32
(11.0)
FILTER
FILTER
10.31
(26.2)
4.5
(11.4)
WATER OUT 1/2˝ FPT
WATER IN 1/2˝ FPT
11.75
(29.8)
4.5
(11.4)
WATER OUT 1/2˝ FPT
1.0
(2.5)
WATER IN 1/2˝ FPT
0.86
(2.2)
1.0
(2.5)
0.86
(2.2)
2.0
(5.1)
2.0
(5.1)
1.78
(4.5)
25.25
(64.1)
25.25
(64.1)
21.4
(54.4)
20.6
(52.3)
20.0
(50.8)
19.5
(49.5)
11.0
(27.9)
CONDENSATE
DRAIN CONNECTION
12.0
(30.5)
CONDENSATE
DRAIN CONNECTION
43.37
(110.2)
28.0
(71.1)
48.25
(122.6)
33.0
(83.8)
1.64
(4.2)
1.62
(4.1)
OPTIONAL BACK PLATE
OPTIONAL BACK PLATE
25.65
(65.2)
25.80
(65.5)
19.83
(50.4)
9.25
(23.5)
5.5
(14.0)
2.75
(7.0)
13.9
(35.3)
0.66
(1.7)
20.0
(50.8)
11.78
(29.9)
12.03
(30.6)
DAMPER OPENING
5.4
(13.7)
COMPRESSOR
ACCESS PANEL
29
2.75
(7.0)
13.9
(35.3)
0.83
(2.1)
12.18
(30.9)
DAMPER OPENING
COMPRESSOR
ACCESS PANEL
ENVISION CONSOLE SPECIFICATION CATALOG
Dimensional Data - Left Return Controls Detail
:=ED=:B/53
B3@;7</:A
4F@3;=B3E/::
AB/B=>B7=<A=<:G
1=<B@=:>/<3:
@3;=D34=@/113AA
B=1=<B@=:0=F
2/;>3@=<=44AE7B16
=>B7=</:
4CA32
<=<4CA32
27A1=<<31B
=>B7=</:
3:31B@7163/B
3:31B@7163/B;=23
<=@;/:0=7:3@:3AA
AE7B16=>B7=</:
4/<=>B7=<AE7B16
=>B7=</:
0/::D/:D3A
6/<2G0=F
1=;>@3AA=@
/113AA>/<3:
@3;=D324=@
1:/@7BG
0=B6A723A
=>B7=</:
6=A397BA
47:B3@
1=<23<A/B3
2@/7<1=<<31B7=<
=>B7=</:0/19>:/B3
@3?C7@324=@
2/;>3@7<AB/::/B7=<
=CBA723/7@
2/;>3@=>B7=<
473:27<AB/::32
30
ENVISION CONSOLE SPECIFICATION CATALOG
Dimensional Data - Left Return Chassis
Data = inches (cm)
Models 09-12
28.5
(72.4)
Models 15-18
37.88
(96.2)
9.38
(23.8)
34.0
(86.4)
CONTROL PANEL
42.88
(108.9)
8.88
(22.6)
CONTROL PANEL
1.50
(3.8)
1.50
(3.8)
1.50
(3.8)
1.50
(3.8)
BLOWER ACCESS PANEL
BLOWER ACCESS PANEL
COMPRESSOR
ACCESS PANEL
COMPRESSOR
ACCESS PANEL
4.37
(11.1)
4.32
(11.0)
FILTER
FILTER
10.31
(26.2)
4.5
(11.4)
WATER OUT 1/2˝ FPT
WATER IN 1/2˝ FPT
11.75
(26.2)
WATER OUT 1/2˝ FPT
1.00
(2.5)
4.5
(11.4)
WATER IN 1/2˝ FPT
0.86
(2.2)
1.00
(2.5)
0.86
(2.2)
2.0
(5.1)
2.0
(5.1)
25.25
(64.1)
25.25
(64.1)
1.78
(4.5)
21.4
(54.4)
20.6
(52.3)
20.0
(50.8)
19.5
(49.5)
11.0
(27.9)
12.0
(30.5)
CONDENSATE
DRAIN CONNECTION
CONDENSATE
DRAIN CONNECTION
43.37
(110.2)
28.00
(71.1)
48.25
(122.6)
33.0
(83.8)
1.62
(4.1)
1.62
(4.1)
OPTIONAL BACK PLATE
OPTIONAL BACK PLATE
25.65
(65.1)
25.80
(65.5)
19.83
(50.4)
20.0
(50.8)
12.03
(30.5)
COMPRESSOR
ACCESS PANEL
2.75
(7.0)
0.66
(1.7)
13.90
(35.3)
9.25
(23.5)
DAMPER OPENING
12.18
(30.9)
5.50
(14.0)
COMPRESSOR
ACCESS PANEL
31
2.75
(7.0)
0.83
(2.1)
13.90
(35.3)
11.78
(29.9)
DAMPER OPENING
5.50
(14.0)
ENVISION CONSOLE SPECIFICATION CATALOG
Physical Data
Consoles
Model
09
12
Compressor (1 each)
15
18
36 [1.02]
34 [0.96]
Rotary
Factory Charge R410A, oz [kg]
27 [0.77]
27 [0.77]
Fan Motor & Blower
Fan Motor Type/Speeds
Fan Motor- hp [W]
PSC
2 Speeds
ECM
3 Speeds
PSC
1/20 [37]
1/20 [37]
1/12
[62]
1/12
[62]
ECM
0.25 [186]
0.25 [186]
0.25 [186]
0.25 [186]
PSC
5.75 x 5.5
[146 x 140]
5.75 x 5.5
[146 x 140]
6.0 x 6.5
[152 x 165]
6.0 x 6.5
[152 x 165]
ECM
5.75 x 5.5
[146 x 140]
5.75 x 5.5
[146 x 140]
6.0 x 6.5
[152 x 165]
6.0 x 6.5
[152 x 165]
Blower Wheel Size (Dia x W), in. [mm]
Coax and Water Piping
Water Connections Size - FPT - in [mm]
1/2” [12.7]
1/2” [12.7]
1/2” [12.7]
1/2” [12.7]
Coax & Piping Water Volume - gal [l]
0.15 [0.6]
0.18 [0.7]
0.35 [1.3]
0.35 [1.3]
8 x 22
[203 x 559]
8 x 22
[203 x 559]
8 x 30
[203 x 762]
8 x 30
[203 x 762]
Consoles
Air Coil Dimensions (H x W), in. [mm]
Air Coil Total Face Area, ft2 [m2]
1.2 [0.114]
1.2 [0.114]
1.7 [0.155]
1.7 [0.155]
Air Coil Tube Size, in [mm]
3/8 [9.5]
3/8 [9.5]
3/8 [9.5]
3/8 [9.5]
Air Coil Number of rows
3
3
4
4
Filter Standard - 1” [25.44mm]
1 - 10 x 28
[254 x 711]
1 - 10 x 28
[254 x 711]
1 - 12 x 33
[305 x 838]
1 - 12 x 33
[305 x 838]
Weight - Operating, lb [kg]
210 [91]
210 [95]
230 [102]
235 [107]
Weight - Packaged, lb [kg]
220 [100]
220 [100]
240 [109]
245 [111]
1/20/14
32
ENVISION CONSOLE SPECIFICATION CATALOG
Electrical Data
ECM Motor
Compressor
LRA
Fan
Motor
FLA
Total
Unit
FLA
Min
Circ
Amp
8.0
50.0
4.25
12.3
14.3
20
4.1
21.0
2.6
6.7
7.7
10/15
6.8
7.9
10/15
13.8
16.1
25
Model
Rated
Voltage
Voltage
Min/Max
MCC
RLA
115/60/1
104/127
12.5
09
208-230/60/1
187/253
6.4
265/60/1
238/292
6.7
4.3
22.0
2.5
115/60/1
104/127
14.8
9.5
50.0
4.25
12
15
18
Max
Fuse/
HACR
208-230/60/1
187/253
7.7
4.9
25.0
2.6
7.5
8.8
10/15
265/60/1
238/292
7.0
4.5
22.0
2.5
7.0
8.1
10/15
208-230/60/1
187/253
9.2
5.9
29.0
2.6
8.5
10.0
15
265/60/1
238/292
7.8
5.0
28.0
2.5
7.5
8.8
10/15
208-230/60/1
187/253
10.4
6.7
33.5
2.6
9.3
10.9
15
265/60/1
238/292
8.7
5.6
28.0
2.5
8.1
9.5
15
HACR circuit breaker in USA only
1/20/14
PSC Motors
Compressor
Fan
Motor
FLA
Total
Unit
FLA
Min
Circ
Amp
0.92
8.9
10.9
25
0.50
4.6
5.6
10/15
4.8
5.9
10/15
10.4
12.8
30
5.4
6.6
10/15
Model
Rated
Voltage
Voltage
Min/Max
MCC
RLA
LRA
115/60/1
104/127
12.5
8.0
50.0
09
208-230/60/1
187/253
6.4
4.1
21.0
265/60/1
238/292
6.7
4.3
22.0
0.50
115/60/1
104/127
14.8
9.5
50.0
0.92
208-230/60/1
187/253
7.7
4.9
25.0
0.50
12
15
18
Max
Fuse/
HACR
265/60/1
238/292
7.0
4.5
22.0
0.50
5.0
6.1
10/15
208-230/60/1
187/253
9.2
5.9
29.0
0.69
6.6
8.1
10/15
10/15
265/60/1
238/292
7.8
5.0
28.0
0.65
5.7
6.9
208-230/60/1
187/253
10.4
6.7
33.5
0.69
7.4
9.1
15
265/60/1
238/292
8.7
5.6
28.0
0.65
6.3
7.7
10/15
HACR circuit breaker in USA only
1/20/14
33
ENVISION CONSOLE SPECIFICATION CATALOG
Auxiliary Heat Ratings
ECM Motors
Model
09-12
(1 kW)
09-12
(2 kW)
15-18
(3 kW)
Rated
Voltage
Voltage
Min./Max.
Heater
Element
Watts
Fan
Motor
FLA
Heater
Element
FLA
Total
Unit
FLA
Min.
Circuit
Amp.
Max.
Fuse/
Brkr.
10
208/60/1
197/254
818
2.45
3.93
6.4
8.0
230/60/1
197/254
1000
2.60
4.35
7.0
8.7
15
265/60/1
239/291
1000
2.50
3.77
6.3
7.8
10
20
208/60/1
197/254
1636
2.45
7.86
10.3
12.9
230/60/1
197/254
2000
2.60
8.70
11.3
14.1
25
265/60/1
239/292
2000
2.50
7.55
10.1
12.6
20
208/60/1
197/254
2454
2.45
11.80
14.3
17.8
30
230/60/1
197/254
3000
2.60
13.04
15.6
19.6
35
265/60/1
239/292
3000
2.50
11.32
13.8
17.3
30
Always refer to unit nameplate data prior to installation.
10/5/10
PSC Motors
Model
09-12
(1 kW)
09-12
(2 kW)
15-18
(3 kW)
Rated
Voltage
Voltage
Min./Max.
Heater
Element
Watts
Fan
Motor
FLA
Heater
Element
FLA
Total
Unit
FLA
Min.
Circuit
Amp.
Max.
Fuse/
Brkr.
10
208/60/1
197/254
818
0.50
3.93
4.4
5.5
230/60/1
197/254
1000
0.50
4.35
4.9
6.1
10
265/60/1
239/291
1000
0.50
3.77
4.3
5.3
10
208/60/1
197/254
1636
0.50
7.86
8.4
10.5
15
230/60/1
197/254
2000
0.50
8.70
9.2
11.5
20
265/60/1
239/292
2000
0.50
7.55
8.1
10.1
15
208/60/1
197/254
2454
0.69
11.80
12.5
15.6
25
230/60/1
197/254
3000
0.69
13.04
13.7
17.2
30
265/60/1
239/292
3000
0.65
11.32
12.0
15.0
25
10/5/10
Blower Performance Data
ECM Motors
PSC Motors
CFM
Low Speed
High Speed
09
300
350
12
300
350
15
450
500
18
450
500
Factory settings are in Bold
Air flow values are with dry coil and standard filter.
Model
Model
09
12
15
18
CFM
Low Speed
300
300
350
350
For wet coil performance first calculate the face velocity of the air coil (Face Velocity [fpm] = Airflow [cfm]
/ Face Area [sq ft]). Then for velocities of 200 fpm reduce the static capability by 0.03 in. wg, 300 fpm by
0.08 in. wg, 400 fpm by 0.12in. wg. and 500 fpm by 0.16 in. wg.
34
Medium Speed
325
325
450
450
High Speed
400
400
600
600
ENVISION CONSOLE SPECIFICATION CATALOG
Reference Calculations
Heating Calculations:
LWT = EWT -
LAT = EAT +
HE
GPM x 500
HC
CFM x 1.08
Cooling Calculations:
LWT = EWT +
HR
GPM x 500
LAT(DB) = EAT(DB) -
SC
CFM x 1.08
LC = TC - SC
TH = HC + HWC
S/T =
SC
TC
Legend and Notes
ABBREVIATIONS AND DEFINITIONS:
CFM
EWT
GPM
WPD
EAT
=
=
=
=
=
HC
TC
SC
KW
HR
=
=
=
=
=
airflow, cubic feet/minute
entering water temperature, Fahrenheit
water flow in gallons/minute
water pressure drop, PSI and feet of water
entering air temperature, Fahrenheit
(dry bulb/wet bulb)
air heating capacity, MBTUH
total cooling capacity, MBTUH
sensible cooling capacity, MBTUH
total power unit input, kilowatts
total heat of rejection, MBTUH
HE = total heat of extraction, MBTUH
HW = hot water generator capacity, MBTUH
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, MBTUH
LC
= latent cooling capacity, MBTUH
S/T = sensible to total cooling ratio
Notes (Refer to Performance Data tables)
• Performance ratings are based on 80°F DB / 67°F WB EAT for cooling and 70°F DB EAT for heating.
• Three flow rates are shown for each unit. The lowest flow rate shown is used for geothermal open loop/well water
systems with a minimum of 50°F EWT. The middle flow rate shown is the minimum geothermal closed loop flow rate.
The highest flow rate shown is optimum for geothermal closed loop systems and the suggested flow rate for boiler/
tower applications.
• The hot water generator numbers are based on a flow rate of 0.4 GPM/ton of rated capacity with an EWT of 90°F.
• Entering water temperatures below 40°F assumes 15% antifreeze solution.
• For non-standard EAT conditions, apply the appropriate correction factors on (Refer to Correction Factor Tables).
• Interpolation between EWT, GPM and CFM data is permissible.
35
ENVISION CONSOLE SPECIFICATION CATALOG
Operating Limits
Cooling
(°F)
(°C)
Operating Limits
Air Limits
Min. Ambient Air
45
Rated Ambient Air
80
Max. Ambient Air
100
Min. Entering Air
50
Rated Entering Air db/wb 80.6/66.2
Max. Entering Air db/wb
110/83
Water Limits
Min. Entering Water
30
Normal Entering Water
50-110
Max. Entering Water
120
Heating
(°F)
(°C)
7.2
26.7
37.8
10.0
27/19
43/28.3
45
70
85
40
68
80
7.2
21.1
29.4
4.4
20.0
26.7
-1.1
10-43.3
48.9
20
30-70
90
-6.7
-1.1
32.2
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 dependent 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.
Correction Factor Tables
EA Corrections
Cooling Capacity Corrections
Sensible Cooling Capacity Multipliers - Entering DB ºF
Entering
Air WB ºF
Total
Clg Cap
60
65
0.723
0.866
1.048
1.185
0.632
0.880
1.078
0.881
70
75
80
Power
Input
Heat of
Rejection
80.6
85
90
95
100
*
*
*
*
*
*
0.985
0.913
1.244
1.260
*
*
*
*
0.994
0.927
1.079
1.085
1.270
*
*
*
0.997
0.972
55
0.898
60
0.912
65
0.967
0.694
66.2
0.983
0.655
0.842
1.040
1.060
1.232
*
*
*
0.999
0.986
67
1.000
0.616
0.806
1.000
1.023
1.193
1.330
*
*
1.000
1.000
70
1.053
0.693
0.879
0.900
1.075
1.250
1.404
*
1.003
1.044
75
1.168
0.687
0.715
0.875
1.040
1.261
1.476
1.007
1.141
11/10/09
Note: * Sensible capacity equals total capacity at conditions shown.
Heating Capacity Corrections
Ent Air
DB °F
Heating Corrections
Htg Cap
Power
Heat of Ext
45
1.062
0.739
1.158
50
1.050
0.790
1.130
55
1.037
0.842
1.096
60
1.025
0.893
1.064
65
1.012
0.945
1.030
68
1.005
0.976
1.012
70
1.000
1.000
1.000
75
0.987
1.048
0.970
80
0.975
1.099
0.930
11/10/09
36
ENVISION CONSOLE SPECIFICATION CATALOG
NC*09 - Performance Data
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37
ENVISION CONSOLE SPECIFICATION CATALOG
NC*12 - Performance Data
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ENVISION CONSOLE SPECIFICATION CATALOG
NC*15 - Performance Data
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ENVISION CONSOLE SPECIFICATION CATALOG
NC*18 - Performance Data
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40
ENVISION CONSOLE SPECIFICATION CATALOG
Wiring Schematics
CCM - ELECTRONIC THERMOSTAT
208-230-265/60/1
Compressor
S
Blue
PSC
Fan
Motor
Grn
C
Brn
Red
Wht
Unit
Power Supply
208-230/60/1 or
265-277/60/1
Ground
Lug
R
Handi - Box
Blk
G
Tan (33)
Cap
White (28)
L
T2
T1
CC
L2
L1
H
Brown (26)
Black (31)
White (28)
Red (32)
Black(29)
Black
Red (30)
High
4
Black (25)
2
Low
RB
5
NOTE 1
Blue
230V
265V
Black (27)
Red
208V
Transformer
Brown (26)
Red (19)
24V
PB
1
Yellow
Black/White
2
NOTE 2
Black (12)
Red (19)
3
Black (22)
4
Yellow (13)
5
Green (00)
TEST
PIN
Yellow (10)
IN
PUT
Ther
m istor
24 V
AC
A Heat
T1
LP
Black
FS
NOTE 3
ST
Black
T3
T4
Black (12)
Fan Mode Sw
Continuous
Red (17)
Black
T1
1
RB
R
C
CG
CG
CC
CC
HP
HP
HP
Violet (5)
Black (22)
White (18 )
White (20)
Red
3
Violet (4)
Cycled
Black
Overide
Shu t down
T2
Yellow (13)
T4
Orange (14)
T6
Blue (T6)
T5
CC
Orange (21)
Blk/Wht (24)
Not Used
Red (15)
Damper Sw
ON
OFF
Blue/Wht (35)
Blue/Wht (36)
24 V A c c es s ory
T5
White (34)
Blk/Wht (23)
RV
T6
B Cool
HP
T
Red (11)
T3
T2
Blue (8)
Blue (9)
Yellow (10)
COMPRESSOR
CONTROL MODULE
LP
Red (11)
Black(7)
LP
Electronic THERMOSTAT
Black(6)
LP
Red (17)
Violet (5)
LP
HP
Y
White (18)
Violet (4)
Y
Fan
LO
Brown (3)
2
3
R
Red (2)
Auto
LO
Black/White (1)
1
C
6
24V A C
S hutdown
SHUT
Damper
Motor
DT
D
J1
DOWN
Red (16)
Yellow (13)
Legend
Factory low voltage wiring
Factory line voltage wiring
Field low voltage wiring
Field line voltage wiring
Quick connect terminal
HP
Field wire lug
L1
Earth Ground
LP
Relay ContactsN.O., N.C.
1
3
P
2
Wire nut
CC - Compressor Contactor
DT - Damper Terminal Block
FS - Freeze Sensing Device
HP - High Pressure Switch
LP - Low Pressure Switch
PB- Power Block
RB - Blower Relay
RV - Reversing Valve Coil
ST - Entering Air Temperature Sensor
Polarized connector
T
Switch - High Pressure
Notes:
Relay coil
1. Switch Red and Blue wires for 208 volt
operation
2. Terminal C of 24 V PB is used as “L”
output for Brown wire3 for Lockout.
Capacitor
3. Optional field installed freeze sensing
device.
Switch - Low Pressure
Thermistor
Temperature Switch
6/10/08
41
ENVISION CONSOLE SPECIFICATION CATALOG
Wiring Schematics cont.
CCM w/EH - ELECTRONIC THERMOSTAT
208-230-265/60/1
Compressor
Blue
PSC
Fan
Motor
Grn
Blue
S
Brn
Handi - Box
R
Wht
Red
Cap
L
White
White (28)
H
White
T2
EH
Black (29)
Red (30)
L1
Blue (40)
G
Blk
Tan (33)
T1
L2
Unit
Power Supply
208-230/60/1 or
265-277/60/1
Ground
Lug
C
T2
T1
CC
L2
L1
Brown (26)
Blue (40 )
Tan (41)
Black (31)
White (28 )
Red (32 )
Tan (41)
4
Black (25)
High
2
RB
5
Low
Black
Black (27)
NOTE 1 Red
208V
Blue
230V
265V
Brown (26)
Transformer
PB
Red (19)
Black (12)
Black (22)
24V
Yellow
A
NOTE 2
C
D
Black/White
Red (19)
1
4
Yellow (44)
E1
3
Gray (42)
5
Green (00)
Yellow (13)
IN
PUT
Ther
m istor
24 V
AC
A Heat
T1
T3
T4
T1
Black
Black
Fan Mode Sw
Continuous
Red
(17)
Black (12)
Red
C
C
CG
CC
LO
CG
CC
HP
HP
HP
HP
Blue (9)
Yellow (10)
COMPRESSOR
CONTROL MODULE
Violet (4)
White (18)
White (20 )
1
Red (39)
RB
Overide
Shut down
T4
Orange (14)
T6
Blue (T6)
Violet (5)
Yellow (44)
RV
CC
Orange (21)
White (34)
Blk/Wht (23)
Red (15)
E1
5
Black (37)
Black
4
2
Blue (38 )
EH
3
Cycled
Yellow (13)
Damper Sw
ON
Blk/Wht (24)
24V A C
S hutdown
24 V A cc es s ory
Blue/Wht (36)
J1
DOWN
Blue (8 )
Black
T2
SHUT
Black (7)
T
Red (11)
T5
B Cool
Black (6)
FS
NOTE 3
ST
T5
T6
LP
Blue (T6)
T3
T2
EH
Brown (43)
Violet (5)
LP LP
White (18 )
Red (17)
Red (11)
HP
Violet (4)
LP LP
Electronic THERMOSTAT
Normal
LO
Brown (3)
2
Fan
3
R
Red (2)
R
Black/White (1)
Auto
Y
1
TEST
PIN
NOTE 4
AQ
Y
6
Red (16)
OFF
Damper
Motor
Blue/Wht (35)
DT
D
Legend
Legend
Factory low voltage wiring
Factory line voltage wiring
Field low voltage wiring
Field line voltage wiring
Quick connect terminal
L1
Field wire lug
Earth Ground
HP
LP
Relay ContactsN.O., N.C.
1
3
P
2
Wire nut
AQ - Aquastat
CC - Compressor Contactor
DT - Damper Terminal Block
E1 - Electric Heat Relay
EH - Electric Heat Contactor
FS - Freeze Sensing Device
HP - High Pressure Switch
LP - Low Pressure Switch
PB - Power Block
RB - Blower Relay
RV - Reversing Valve Coil
ST - Entering Air Temperature Sensor
Polarized connector
Switch - High Pressure
Notes:
Relay coil
1. Switch Red and Blue wires for 208 volt
operation
2. Terminal C of24 V PB is used as “L”
output for Brown wire3 for Lockout.
Capacitor
3. Optional field installed freeze sensing
device.
Switch - Low Pressure
4. Optional field installed aquastat.
T
Thermistor
Temperature Switch
6/10/08
42
ENVISION CONSOLE SPECIFICATION CATALOG
Wiring Schematics cont.
CCM w/ECM - ELECTRONIC THERMOSTAT
208-230-265/60/1
ECM
Motor
Compressor
Blue
S
C
ECM
Motor
Module
Grn
Unit
Power Supply
208-230/60/1 or
265-277/60/1
Ground
Lug
R
Red
Handi - Box
Blk
G
Brown
Orange
Note 4
Brown/Whtite
Tan (33)
T2
T1
CC
L2
L1
Brown (26)
Black (31)
Red
Red (32)
Black
Fan Switch
Black
High
4
Black (25)
2
NOTE 1
Blue
230V
265V
Black (27)
Red
208V
Transformer
Low
RB
5
Brown (26)
24V
PB
1
Red (19)
Yellow
Black/White
2
Mode Switch
NOTE 2
Black (12)
Red (19)
3
Black (22)
4
Yellow (13)
5
Green (00)
TEST
PIN
Yellow (10)
R
Red (2)
Red (17)
Electronic THERMOSTAT
IN
PUT
Red (11)
Ther
mistor
24 V
AC
A Heat
T1
T3
T2
T3
T1
LP
Black
C
LO
LO
CG
CG
CC
Black (6)
Black (7)
Blue (8)
Blue (9)
Yellow (10)
COMPRESSOR
CONTROL MODULE
FS
NOTE 3
ST
Black
Violet (5)
LP LP HP HP
HP
LP LP HP HP
White (18)
Violet (4)
Y
Fan
3
CC
Brown (3)
2
Y
Auto
R
Black/White (1)
1
C
6
T
Red
Black (12)
Fan Mode Sw
Continuous
Red (17)
Red (11)
1
Violet (5)
Black (22)
White (18)
White (20)
3
Violet (4)
RB
Damper Switch
Red
Cycled
Orange
T2
Yellow (13)
T4
Orange (14)
T6
Blue (T6)
CC
White (34)
ON
Blk/Wht (23)
T4
RV
Overide
Shut down
T5
Orange (21)
Blk/Wht (24)
Not Used
B Cool
24 V Accessory
Red (15)
24VAC
Shutdown
SHUT
J1
DOWN
Blue/Wht (35)
Blue/Wht (36)
T6
T5
OFF
NC*09
NC*12
NC*15
NC*18
Red (16)
Yellow (13)
Blower Settings
High
Orange
Brown/White
Orange
Brown/White
Damper
Motor
DT
D
Low
Brown
Orange
Brown
Orange
Legend
Factory low voltage wiring
Factory line voltage wiring
Field low voltage wiring
Field line voltage wiring
Quick connect terminal
HP
Field wire lug
L1
Earth Ground
LP
Relay Contacts N.O., N.C.
1
3
P
2
Wire nut
CC - Compressor Contactor
DT - Damper Terminal Block
FS - Freeze Sensing Device
HP - High Pressure Switch
LP - Low Pressure Switch
PB - Power Block
RB - Blower Relay
RV - Reversing Valve Coil
ST - Entering Air Temperature Sensor
Switch - High Pressure
Switch - Low Pressure
Relay coil
Capacitor
Polarized connector
T
Notes:
1. Switch Red and Blue wires for 208 volt
operation
2. Terminal C of 24 V PB is used as “L”
output for Brown wire 3 for Lockout.
3. Optional field installed freeze sensing device.
4. Factory wired. Refer to blower table settings.
Thermistor
Temperature Switch
Page 1
43
ENVISION CONSOLE SPECIFICATION CATALOG
Wiring Schematics cont.
VERSATEC CONTROL - EH & REMOTE WALL THERMOSTAT
Legend for Schematic [A]
Normal Control Timing Table
Blower off delay
30 seconds
Compressor on delay
10 seconds
Short cycle delay
5 minutes
Minimum compressor on time
60 seconds (except for fault condition )
High pressure fault recognition delay
Less than 1 second
Low pressure fault recognition delay
30 seconds
Freeze sensing fault recognition delay
30 seconds
Condensate overflow fault recognition delay
30 seconds
Low pressure fault bypass delay
2 minutes
Freeze sensing fault bypass delay
2 minutes
Motorized valve delay
90 seconds
Random start delay
0 - 25 seconds
Test Control Timing Table
Blower off delay
5 seconds
Compressor on delay
2 seconds
Short cycle delay
15 seconds
Minimum compressor on time
5 seconds (except for fault condition )
High pressure fault recognition delay
Less than 1 second
Low pressure fault recognition delay
30 seconds
30 seconds
Freeze sensing fault recognition delay
30 seconds
Condensate overflow fault recognition delay
0 seconds
Low pressure fault bypass delay
0 seconds
Freeze sensing fault bypass delay
90 seconds
Motorized valve delay
0 seconds
Random start delay
208-230-265/60/1
Versatec Logic Board Physical Layout
FAN
CC Relay
Fan Relay
CCG
C
C
6
7
8
R
R
Water Flow
FS thermistor (loop <15°F, well < 30°F) lockout
High pressure >600 PSI lockout
Low Press
Low pressure < 40 PSI lockout
Air Flow
Not used
Status
Microprocessor malfunction*
DHW Limit
Not Used
HWD
SW2 status (Off = down position, On = up position)
LED
Current Fault Status
Drain
Water Flow
High Press
Low Press
Air Flow
Status
DHW Limit
HWD
SW1- #4 On, SW2 On
Drain pan overflow
FS thermistor (loop <15°F, well <30°F)
High pressure > 600 PSI
Low pressure < 40 PSI
Not used
Not used
Not used
SW2 in the On position
Diagnostic Modes
Inputs
SW1- #4 Off, SW2 Off
Y
G
O
ES
NS
LS
Not Used
Off position
2
P2
3
4
5
SW1
Microprocessor
Logic Control
17P529A01
P1
R
C
Y
Switch
Drain pan overflow lockout
High Press
10
1
O
G
LO
ES
NS
LS
Logic Board DIP Switch Settings
Normal Display Mode
SW1 - #4 On, SW2 Off
Drain
9
P3
LED Display Mode Table
LED
FANCOM
CC
OFF
ON
SW1 - 1
Test - Selected timings sped up to facilitate
troubleshooting
Normal - Standard timings
SW1 - 2
Loop - Closed loop freeze sensing setting (15°F)
Well - Open loop freeze sensing setting (30°F)
SW1 - 3
Enables NS features
Normal - Standard thermostat operation
SW1 - 4
IO Display * - Enables Input/Output display on external
LED board*
Normal * - Unit status display
SW1 - 5
Motorized Valve - 1.5 minute compressor on delay
Normal - Standard delay on call from
compressor used
OFF * - Normal or Input display mode activated
ON * - Current fault or Output display
mode activated
SW2
*Refer to LED Display Mode table for position of SW1-4 and SW2
Outputs
SW1- # 4 Off, SW2 On
Compressor
FAN
O
ES
NS
LS
Not Used
On position
*Flashing Status light indicates microprocessor is functioning properly. Solid "on" indicates a
microprocessor malfunction.
44
Mode
Htg
Clg
Fan
Operational Logic Table
Inputs
Fan
Comp
ON
ON
Y
ON
ON
Y,O
OFF
G
ON
RV
OFF
ON
OFF
ENVISION CONSOLE SPECIFICATION CATALOG
Wiring Schematics cont.
VERSATEC CONTROL - EH & REMOTE WALL THERMOSTAT
Schematic [A]
208-230-265/60/1
Black
Compressor
PSC
Fan
Motor
Grn
Blu
Brn/Wht
Brn
LS2
Cap
H
T2
Red
White
T2
L1
Blue (40)
T1
CC
L2
Tan (41)
L1
Low
High
Red (32)
Red(25)
Black
RB
4
G
Handi - Box
T1
L2
White (28)
Unit
Power Supply
208-230 /60/1 or
265-277/60/1
Ground
Lug
Blk
Tan (36)
EH
Red (30)
C
R
Black (31)
Transformer
Black Com
Black(27)
2
NOTE 5
Blue 265V
Blue 230V
24V
Red 208V
Yellow
DAMPER MODE
Off
1
RB
3
Black (22)
Orange (21)
FAN
FAN
COM
On
Blue/Wht (35)
Black/White
Damper
Motor
DT
D
CC
R
Red(19)
R
Blue/Wht (36)
White (34)
CC
5
4
Red (39)
2
Brown (43)
EH
CCG
C
Black (37)
C
E1
Green (00)
P2
CPU
Blue (38)
1
6
2
7
3
8
4
9
5
10
SW1
Off
On
Test / Normal
Loop / Well
Inputs / Normal
Outputs / Normal
Motorized Valve/ Normal
1
2
3
4
5
Black (47)
Black (46)
Blue (45 )
Blue (44)
Brown(43)
Orange (42)
Orange (41 )
Yellow
Yellow
HP
LP
CO
Gray (42)
RV
T
FS
P1
Pink
Bl ue
Violet
Brown
Green
Orange
Red
Bl ack
R C Y O G LO ES NS LS
Yellow
Fan Speed
Switch
White
L
Black(29)
S
LS1
White
E1
NOTE 1
Black/
White
Black/
White
R C Y1 O G L S X2 X1 W1
MV
NOTE 3
AQ
Terminal Board
NOTE 2
Legend
Legend
Relay ContactsN.O., N.C.
Switch - High pressure
Switch - Low pressure
T
Thermistor
P
1
Relay coil
3
2
Factory low voltage wiring
Factory line voltage wiring
Field low voltage wiring
Field line voltage wiring
DC voltage PCB traces
Internal junction
Quick connect terminal
Polarized connector
Wire nut
L1
Condensate Overflow
Field wire lug
Ground
AQ – Aquastat
CC – Compressor Contactor
CO – Condensate Overflow
DT – Damper Terminal Block
E1 – Electric Heat Relay
EH – Electric Heat Contactor
ES – Emergency Shutdown
FS – Freeze Sensing Device
HP – High Pressure Switch
LP – Low Pressure Switch
LS – Loadshed
MV – Motorized Valve
NS – Night Setback
RB – Blower Power Relay
RV – Reversing Valve Coil
SW1 – DIP Switch #1
Notes:
1 - Requires common connection or24 VAC for
activation.
2 - When field installed 24VAC motorized
valve is used, connect to C and Y or SV terminals.
3 - Optional field installed aquastat for use with single heat
4 - Check installlation wiring information for
specific thermostat hookup instructions.
5 - Switch blue and red wires for208V operation.
97P786-04
45
6/10/08
ENVISION CONSOLE SPECIFICATION CATALOG
Wiring Schematics cont.
FX10 - EH
208-230-265/60/1
Compressor
Blue
S
PSC
Fan
Motor
Blu
Brn
Fan Speed
Switch
Blk
High
T1
L1
L2
T2
T1
L2
L1
Low
Black
TAN
White
RB
Red
Black
BLUE
Black
Blue 240V
277V
Black
NOTE 1
Black(121)
Black(6)
Red (120)
G
Handi - Box
CC
EHC
Red
Blk
White
White
T2
L
Red
Tan
LS2
LS1
Cap
H
Ground
Lug
R
Brn/Wht
Grn
Unit
Power Supply
208-230/60/1 or
265-277/60/1
C
Yellow (35)
Black(515)
Black (131)
Black (34)
Red 208V
Yellow (33)
Transformer
Blk/Wht (36)
PB1
Molex
Plug
Green (37)
Blk/Wht
L1
L2
24V COM
FS
R
Brown (2)
25
T White (5)
Wht/Blu (6)
26
T
DA
C
Alarm
SS
39
40
AI Com
AIC
Room Sensor
J2
Sensor Com
DF/AP
Gry/Wht (14)
TO
Black (6)
LC1
Green (17)
Orange (19)
Red (120)
LC2
Black (111)
Yellow (21)
42
PWM1
J10
24VAC Com
43
DI12
44
DI11
45
46
DI10
DI9
47
DI8
48
DI7
D05
11
D04
10
Black (310 )
9
Yellow (9)
Johnson FX-10
CP/FP
NOTE 2
L1
Violet (23)
Red (24 )
50
J9
51
DI6
DI5
DI4
ES
52
53
Pink (28 )
54
Blk/Wht (29)
Orange (30)
55
DI2
9VDC
OS
56
DI1
LP
RV
Orange (7)
Black (6)
5
Black (5)
4
Blue (4)
HP
CC
Blk/Wht
DI 3/4 /5/6/ Com
Blue (27)
Gray (26 )
Blue (32)
49
Blk
White
Orange
D02
Black (22)
7
6
Black(31)
L2
Black (111 )
8
D03
Black (310)
PB2
Black
(12)
PWM2
A15
SC
Temp Occ
13
12
PWM2 Com
41
RS
Yellow (16)
15
A11
A13
A23
Setpoint Shift
Black (1)
14
D06
A31
5VDC
A32
38
A22
37
LED
A21
Y1
AI1
+
A33
Org/Wht (12)
O
A35
Rev Valve
Yellow
Yellow
16
5VDC
35
36
18
D07
A25
G
A12
Org/Bck (11)
D08
A34
Blu/Wht (10) 33
34
X2
Fan
A24
AI2
+
32
Acc2
A14
NOTE 4
19
17
AI6
+
31
X1
D09
MEHS
Red (20)
AI4
+
29
30
Acc 1
Comp
AI5
+
27
28
Blk/Red (9)
NOTE 3
L
AI3
+
24
GROUND
CO
20
5VDC
24VAC Com
NOTE 5
TB
24VAC
11 K
Brown (1)
J8
24VAC
Molex
Plug
23
DI3
D01
3
Gray (3)
2
Black (2 )
RB
Blk
EHC
1
J7
Legend
Factory low voltage wiring
Factory line voltage wiring
Field low voltage wiring
Field line voltage wiring
Field Zone Sensor Wiring
Internal junction
T
Switch - High pressure
Thermistor - Johnson Control
Open Jumper
Field wire lug
Closed Jumper
1
Wire nut
Polarized connector
P
3
Relay coil
Switch - Low pressure
2
Quick connect terminal
Relay ContactsN.O., N.C.
Condensate Overflow
L1
Ground
CC - Compressor Contactor
CO - Condensate Overflow
CP/FP - Compressor Proving/Fan Proving
DA - Discharge Air Temperature
DF/AP - Dirty Filter/Air Proving
EHC - Electric Heat Contactor
EHR - Electric Heat Relay
ES - Emergency Shutdown
FS - Freeze Sensing Device
HP - High Pressure Switch
LP - Low Pressure Switch
MEHS- Manual EH Switch
OS - Occupied Switch
RB - Blower Power Replay
RV - Reversing Valve Coil
TB - Terminal Block
Notes:
1 - Switch Blue and Red wires for 208V operation
2 - Disconnect for 15 degree freeze protection
3 - Acc 1 output is cycled with the compressor.
4 - Acc 2 output is cycled with the fan.
5 - R, C, Y1, O, and G inputs are for use with a wall mounted
thermostat.
6/10/08
46
ENVISION CONSOLE SPECIFICATION CATALOG
Engineering Guide Specifications
drainage of condensate. The unit as standard will be
supplied with solid-state electronic condensate overflow
protection with microprocessor or FX10 option. Mechanical
float switches WILL NOT be accepted. Condensate tube
shall be constructed of stainless steel and have an internal
factory installed condensate trap.
General
Furnish and install WaterFurnace Water Source Heat Pumps,
as indicated on the plans. Equipment shall be completely
assembled, piped and internally wired. Chassis shall be
installed with factory built cabinet or other custom cabinet
approved by WaterFurnace engineering. Chassis SHALL
NOT be installed without an approved cabinet enclosure.
Capacities and characteristics as listed in the schedule and
the specifications that follow. The reverse cycle heating/
cooling units shall be floor mounted console type with
horizontal air inlet and up-flow air discharge. Units shall
be AHRI/ISO 13256-1 certified and listed by a nationally
recognized safety-testing laboratory or agency, such as
ETL Testing Laboratory. Each unit shall be computer runtested at the factory with conditioned water and operation
verified to catalog data. Each unit shall be mounted on a
pallet and shipped in a corrugated box or stretch-wrapped.
The units shall be designed to operate with entering liquid
temperature between 20°F and 120°F [-6.7°C and 48.9°C].
Refrigerant Circuit
All units shall utilize the non-ozone depleting and low global
warming potential refrigerant R410A. All units shall contain
a sealed refrigerant circuit including a hermetic motorcompressor, bi-directional thermostatic expansion valve,
finned tube air-to-refrigerant heat exchanger, reversing
valve, coaxial tube water-to-refrigerant heat exchanger, and
service ports.
Compressors shall be high-efficiency single speed rotary
type designed for heat pump duty and mounted on
durometer grommets to provide vibration free compressor
mounting. Compressor motors shall be single-phase PSC
with external overload protection.
Chassis & Cabinet
The cabinet shall be fabricated from heavy-gauge
galvanized steel and finished with a beige textured epoxy
powder coating on both sides for added protection. This
corrosion protection system shall meet the stringent 1000
hour salt spray test per ASTM B117.
Refrigerant to air heat exchangers shall utilize enhanced
corrugated lanced aluminum fins and rifled aluminum
tube construction rated to withstand 600 psig (4135 kPa)
refrigerant working pressure.
Option: AlumiSeal electro-coated air coil.
The cabinet shall be easily removable to allow for ease
of service to the controls compartment, chassis, and
piping. The top of the cabinet and grille is a horizontally
flat (optional sloped) surface with a hinged control door
cover. The return air filter shall be 1 in. (25.4 mm) fiberglass
disposable type media.
The coaxial water-to-refrigerant heat exchanger shall be
designed for low water pressure drop and constructed of
a convoluted copper (cupronickel option) inner tube and
a steel outer tube. Refrigerant to air heat exchangers shall
utilize enhanced corrugated lanced aluminum fins and rifled
copper tube construction rated to withstand 600 PSIG (4135
kPa) refrigerant working pressure. Refrigerant to water heat
exchangers shall be of copper inner water tube and steel
refrigerant outer tube design, rated to withstand 600 PSIG
(4135 kPa) working refrigerant pressure and 450 PSIG (3101
kPa) working water pressure. The thermostatic expansion
valve shall provide proper superheat over the entire liquid
temperature range with minimal “hunting.” The valve shall
operate bi-directionally without the use of check valves.
The return and supply air sections are insulated with a 1/4
in. (6.4 mm) thick, dual density, 2 lb/ft3 (32 kg/m3) coated
mat glass fiber with edges sealed or tucked under flanges
to prevent the introduction of glass fibers into the discharge
supply air through the aluminum grille. Standard cabinet
panel insulation must meet NFPA 90A requirements, air
erosion and mold growth limits of UL-181, stringent fungal
resistance test per ASTM-C1071 and ASTM G21, and shall
meet zero level bacteria growth per ASTM G22. Unit
insulation must meet these stringent requirements or unit(s)
will not be accepted.
Option: Cupro-nickel refrigerant to water heat exchanger
shall be of copper-nickel inner water tube and steel
refrigerant outer tube design, rated to withstand 600 PSIG
(4135 kPa) working refrigerant pressure and 450 PSIG (3101
kPa) working water pressure. Water lines shall also be of
cupronickel construction.
Option: A Super Quiet Sound package shall include multidensity full coverage compressor blanket.
Option: Shipped with motorized outside air damper and
damper assembly for 25% make-up air.
Option: ThermaShield coated water-to-refrigerant heat
exchanger, water lines and refrigerant suction lines
shall be insulated to prevent condensation at low liquid
temperatures below 50°F.
The drain pan shall be of stainless steel construction to
inhibit corrosion and bacterial growth. Drain outlet shall
be located on pan as to allow complete and unobstructed
47
ENVISION CONSOLE SPECIFICATION CATALOG
Engineering Guide Specifications cont.
Option: FX10 microprocessor-based controller that
interfaces with an electronic thermostat to monitor and
control unit operation. The control shall provide operational
sequencing, blower speed control, high, low and loss of
charge pressure monitoring, freeze detection, condensate
overflow sensing, lockout mode control, fault memory, field
selectable options. The control shall communicate all mode,
status, fault and lockout codes to the front end system for
fast and accurate equipment diagnosis. The control shall
provide fault retry three times before locking out to limit
nuisance trips.
Blower Motor and Assembly
The blower shall be a direct drive centrifugal type with a
twin dynamically balanced wheel. The housing and wheel
shall be designed for quiet, low outlet velocity operation.
The blower housing shall be constructed of galvanized steel
and shall be removable from the unit for servicing of the
blower motor. The blower motor shall be a two-speed type
and shall be isolated from the housing by rubber grommets.
The motor shall be permanently lubricated and have
thermal overload protection.
Optional 3-Speed high-efficiency electrically commutated
motor (ECM)
Optional FX10 microprocessor control communication
protocols: N2, LonWorks, or BACnet
Electrical
Option: Remote mounted thermostat is available for CCM
and Versatec (standard with FX10 option). A terminal block
with screw terminals will be provided for field control wiring.
A control box shall be located within the unit compressor
compartment and shall contain a 75VA transformer, 24
Volt activated, 2 pole compressor contactor, and solidstate controller for complete unit operation. Units shall be
name-plated for use with time delay fuses or HACR circuit
breakers. Unit controls shall be 24 Volt and provide heating
or cooling as required by the remote thermostat/sensor.
Piping
Supply and return water connections shall be 1/2 in. [12.7
mm] FPT copper threaded fittings. All water piping shall be
insulated to prevent condensation at low liquid temperatures.
Unit mounted controls shall consist of switches for “OFF”,
“FAN”, and “AUTO” or “HEAT/COOL”. An additional switch
is provided for blower speed setting of “HI” or “LO”. The
unit shall be equipped with a blower switch on the side of
the control to provide “CONTINUOUS” or “CYCLED” blower
operation. “CYCLED” blower will turn the blower on with
the compressor. A unit-mounted electronic thermostat with
a remote electronic thermistor located in the return air will
control compressor operation in heating and cooling modes.
Unit mounted thermostat shall be the standard thermostat
option. All unit mounted thermostats shall be auto
changeover. Manual changeover WILL NOT be accepted.
Electromechanical operation WILL NOT be accepted.
A stainless steel tube stubbed out from the chassis is
provided for condensate drain attachment. A short piece of
polyvinyl hose is supplied to assist in adapting to drain.
Accessories
Hose Kits – Ball Valves (field-installed)
A flexible steel braid hose featuring Kevlar® reinforced
EPDM core with ANSI 302/304 stainless steel outer braid
and fire rated materials per ASTM E 84-00 (NFPA 255,
ANSI/UL 723 & UBC 8-1). Ball valve at one end; swivel
connector with adapter at the other end (swivel to adapter
connection via fiber or EPDM gasket). Swivel connection
provides union between heat pump and piping system. The
hoses feature brass fittings, stainless steel ferrules. A full
port ball valve shall be provided with integral P/T (pressure/
temperature) port on supply hose. Specifications:
Temperature range of 35°F [2°C] to 180°F [82°C]. Max.
working pressure of 400 psi [2757 kPa] for 1/2 in. and 3/4
in. hose kits; max. working pressure of 350 psi [kPa] for 1 in.
and 1-1/4 in. hose kits.
Controls
Standard: A compressor control module (CCM) shall be
included to disable compressor operation in the event of
a trip of any of the safety switches and to send a signal to
activate a fault indicator light at the thermostat. The CCM
shall be capable of being reset from the thermostat or from
the unit main disconnect switch. A terminal block with
screw terminals shall be provided for field connection of all
low-voltage wiring.
Hose Kits – Automatic Balancing and Ball Valves
(field-installed)
Option: Versatec microprocessor-based controller will
provide operational sequencing; high and low pressure
switch monitoring, freeze detection, lockout mode control,
emergency shutdown mode, random start, short cycle
protection, LED mode and fault indicators, fault memory,
input and output diagnostics, and field selectable options,
and condensate overflow sensing.
A flexible steel braid hose featuring Kevlar® reinforced
EPDM core with ANSI 302/304 stainless steel outer braid
and fire rated materials per ASTM E 84-00 (NFPA 255,
ANSI/UL 723 & UBC 8-1). Ball valve at one end; swivel
connector with adapter at the other end (swivel to adapter
connection via fiber or EPDM gasket). Swivel connection
provides union between heat pump and piping system. The
48
ENVISION CONSOLE SPECIFICATION CATALOG
Engineering Guide Specifications cont.
strainer is provided on one end for fluid straining and
integral “blowdown” valve.. A full port ball valve shall be
provided with integral P/T (pressure/temperature) port on
supply hose and automatic balancing valve with integral P/T
ports and full port ball valve on return hose.
hoses feature brass fittings, stainless steel ferrules. A full
port ball valve shall be provided with integral P/T (pressure/
temperature) port on supply hose and automatic balancing
valve with integral P/T ports and full port ball valve on
return hose.
Specifications:
• Temperature range of 35°F [2°C] to 180°F [82°C].
• Max. working pressure of 400 psi [2757 kPa] for 1/2 in.
and 3/4 in. hose kits; max. working pressure of 350 psi
[2413 kPa] for 1˝ and 1-1/4 in. hose kits.
• Minimum burst pressure of four times working pressure.
Specifications:
• Temperature range of 35°F [2°C] to 180°F [82°C].
• Max. working pressure of 400 psi [2757 kPa] for 1/2 in.
and 3/4 in. hose kits; max. working pressure of 350 psi
[2413 kPa] for 1 in. and 1-1/4 in. hose kits.
• Minimum burst pressure of four times working pressure.
Auxiliary Heater (field-installed 208-230V units only)
Hose Kits – Automatic Balancing and Ball Valves
with ‘Y’ strainer (field-installed)
An electric resistance heater shall provide supplemental
and/or emergency heating capability. A manual switch shall
be mounted on the side of the control compartment with
“NORMAL” or “BOILERLESS” mode. “NORMAL” will run
the compressor when there is a call for heating or cooling.
“BOILERLESS” mode operation will run electric heat
whenever there is a call for heating and run the compressor
for a cooling call.
A flexible steel braid hose featuring Kevlar® reinforced
EPDM core with ANSI 302/304 stainless steel outer braid
and fire rated materials per ASTM E 84-00 (NFPA 255,
ANSI/UL 723 & UBC 8-1). Ball valve at one end; swivel
connector with adapter at the other end (swivel to adapter
connection via fiber or EPDM gasket). Swivel connection
provides union between heat pump and piping system. The
hoses feature brass fittings, stainless steel ferrules. A “y”
49
ENVISION CONSOLE SPECIFICATION CATALOG
Notes
50
ENVISION CONSOLE SPECIFICATION CATALOG
Revision Guide
Pages:
Date:
By:
All
Updated With Aluminum Air Coils
Description:
02 Mar 2014
DS
51
Added Revision Guide
02 Mar 2014
DS
51
Manufactured by
WaterFurnace International, Inc.
9000 Conservation Way
Fort Wayne, IN 46809
www.waterfurnace.com
SC1010CNA
03/14
Product:
Type:
Size:
Document:
Envision Series Console
Geothermal/Water Source Heat Pump
0.75-1.5 Tons
Specification Catalog
©2014 WaterFurnace International, Inc., 9000 Conservation Way, Fort Wayne, IN 46809-9794. WaterFurnace has a policy of continual product research and development
and reserves the right to change design and specifications without notice.