WaterFurnace Envision User Manual

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Water Source/Geothermal Heat Pump 7 to 25 Tons

Installation Information

Water Piping Connections

Electrical Connections

Startup Procedures

Preventive Maintenance

Envision 7-25 Tons Installation Manual

IM1021ANA 01/15

Model Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

General Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Vertical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7

Horizontal Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Installing Horizontal Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10

Installating Vertical Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Water Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

System Cleaning and Flushing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Blower Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-25

ENVISION 7-25 TONS INSTALLATION MANUAL

Wiring Schematics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-27

Optional FX10 Microprocessor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28-37

Blower Drive Sheaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Unit Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Operating Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Pressure Drop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Startup/Troubleshooting Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

ENVISION 7-25 TONS INSTALLATION MANUAL

COMMERCIAL

Model Nomenclature

1-2 3-5 6 7 8

120 T L 3 0 A C A N12N14415116SS

Model Type

NL – Envision Series (Low Temp) NX – Envision Series (Extended Range)

Unit Capacity (MBTUH)

080, 095, 120, 160 180, 240, 300

Discharge Configuration

T – Top Upflow (Vertical) E – End Discharge (Horizontal) S – Discharge Side (Horizontal)

Return Air Configuration

L – Left R – Right

Voltage

3 – 208-230/60/3 4 – 460/60/3 5 – 575/60/3

Future Option

0 – Future

Blower Options

A – Standard Static, Standard Motor B – Low Static, Standard Motor C – High Static, Standard Motor D – Standard Static, Large Motor E – High Static, Large Motor

Water Coil Option

C – Copper N – CuproNickel

2,3

91011 13

17-18*19

Vintage

* - Factory Use Only

Non-Standard Options

SS – Standard QP – 2" MERV 13 Filter SF – Stainless Steel Drain Pan SG – 2" MERV 13 Filter, Stainless Steel Drain Pan

Air Coil/Insulation Option

3 – Uncoated 4 – AlumiSeal

Control Option

4 – FX10 Standard without Communication 5 – FX10 with Open N2 Communication 6 – FX10 with Lonworks Communication 7 – FX10 with BacNet Communication 8 – FX10 Standard with User Interface 9 – FX10 with Open N2 & User Interface 0 – FX10 with Lonworks & User Interface 3 – FX10 with BacNet & User Interface

Water Control Option

N – None V – Two-Way Valve

Hot Gas Bypass/Reheat Option

N – None G – Hot Gas Bypass R – Hot Gas Reheat B – Hot Gas Bypass w/Hot Gas Reheat

Sound Kit Option

A – None B – Sound Kit

Notes: 1 – Not available on vertical NL/NX095, 180, horizontal NL/NX080 2 – Not available on vertical NL/NX080, 160 3 – Not available on horizontal NL/NX120, vertical NL/NX300 4 – Not available on vertical NL/NX160-300. Stainless steel is standard on vertical NL/NX160-300

Rev.: 14 November 2014D

ENVISION 7-25 TONS INSTALLATION MANUAL

General Installation Information

Safety Considerations

WARNING: Before performing service or maintenance operations on a system, turn off main power switches to the indoor unit. If applicable, turn off the accessory heater power switch. Electrical shock could cause personal injury.

Installing and servicing heating and air conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair or service heating and air conditioning equipment. Untrained personnel can perform the basic maintenance functions of cleaning coils and cleaning and replacing filters. All other operations should be performed by trained service personnel. When working on heating and air conditioning equipment, observe precautions in the literature, tags and labels attached to the unit and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves. Use a quenching cloth for brazing operations and have a fire extinguisher available.

Moving and Storage

Move units in the normal “up” orientation. Horizontal units may be moved and stored per the information on the packaging. Do not stack more than three units in total height. Vertical units may be stored one upon another to a maximum height of two units. Do not attempt to move units while stacked. When the equipment is received, all items should be carefully checked against the bill of lading to be sure all crates and cartons have been received. Examine units for shipping damage, removing the units from the packaging if necessary. Units in question should also be internally inspected. If any damage is noted, the carrier should make the proper notation on the delivery receipt, acknowledging the damage.

Unit Location

Locate the unit in an indoor area that allows for easy removal of the filter and access panels. Location should have enough space for service personnel to perform maintenance or repair. Provide sufficient room to make water, electrical and duct connection(s). If the unit is located in a confined space, such as a closet, provisions must be made for return air to freely enter the space by means of a louvered door, etc. Any access panel screws that would be difficult to remove after the unit is installed should be removed prior to setting the unit. On horizontal units, allow adequate room below the unit for a condensate drain trap and do not locate the unit above supply piping. Care should be taken when units are located in unconditioned spaces to prevent damage from frozen water lines and excessive heat that could damage electrical components.

Installing Vertical Units

Prior to setting the unit in place, remove and discard the compressor hold down shipping bolt located at the front of the compressor mounting bracket.

Vertical units are available in left or right air return configurations. Top flow vertical units should be mounted level on a vibration absorbing pad slightly larger than the base to provide isolation between the unit and the floor. It is not necessary to anchor the unit to the floor (see right).

Figure 1: Vertical Unit Mounting

(NXV/NLV 080-300)

ENVISION 7-25 TONS INSTALLATION MANUAL

Vertical Dimensions

7-10 Tons

CONTROL BOX AND WATER LEFT RETURN

2’ PRIMARY SERVICE ACCESS FOR LEFT RETURN

2’ SECONDARY SERVICE ACCESS

TOP DISCHARGE

Legend

AP = Alternate Service Panel BP = Blower Service Panel CP = Control Access Panel CMP = Compressor Service Panel

CONTROL BOX AND WATER

LEFT RETURN

CP CP

AP CMP

2.9 in

[7.4 cm]

61.3 in [155.8 cm]

58.1 in [147.6 cm]

CONTROL BOX RIGHT RETURN

2’ PRIMARY SERVICE ACCESS FOR RIGHT RETURN

2’ PRIMARY SERVICE ACCESS FOR LEFT RETURN

TOP VIEW

34.1 in

[86.6 cm]

16.1 in

[40.9 cm]

Left or Right Return

AP CMP

2’ SECONDARY SERVICE ACCESS

2.9 in

[7.4 cm]

34.1 in

[86.6 cm]

SIDE DISCHARGE

61.3 in [155.7 cm]

58.1 in [147.6 cm]

CONTROL BOX

RIGHT RETURN

CPCP

2’ PRIMARY SERVICE ACCESS FOR RIGHT RETURN

AIR COILS

36.3 in

[92.2 cm]

34.4 in

[87.4 cm]

DRAIN CONNECTION

12.5 in [31.8 cm]

[54.9 cm]

7.2 in

[18.3 cm]

21.6 in

18.1 in

[46.0 cm]

1 in [2.5 cm]

1.42 in

[3.6 cm]

SIDE VIEW

Left or Right Return

2 in [5.1 cm]

56 in

[142.2 cm]

56 in

[142.2 cm]

LEFT RETURN RIGHT RETURN

2.2 in

[5.6 cm]

TOP OR SIDE DISCHARGE

ELECTRICAL

CONNECTIONS

15.6 in

[39.6 cm]

ELECTRICAL

CONNECTIONS

15.6 in

[39.6 cm]

22.6 in

[57.4 cm]

2 in [5.1 cm]

2.2 in

[5.6 cm]

16.1 in

[40.9 cm]

TOP PANEL COVER

1.8 in [4.6 cm]

7.2 in

[18.3 cm]

12.5 in [31.8 cm]

18.1 in [46 cm]

AIR COILS

36.3 in

[92.2 cm]

34.4 in

[87.4 cm]

DRAIN CONNECTIO

2.6 in [6.6 cm] WATER OUT

WATER IN

2.0 in

[5.1 cm]

10.1 in [25.7 cm]

4.0 in [10.2 cm]

2.2 in [5.6 cm]

10.1 in [25.7 cm]

4.0 in [10.2 cm]

2.2 in [5.6 cm]

2.0 in

[5.1 cm]

2.6 in [6.6 cm] WATER OUT WATER IN

REV 2/11/0

Vertical Dimensions cont.

13-25 Tons

TOP DISCHARGE

CONTROL BOX

AND WATER

RIGHT RETURN

CONTROL BOX

AND WATER

LEFT RETURN

2’ PRIMARY

SERVICE ACCESS

ENVISION 7-25 TONS INSTALLATION MANUAL

SIDE DISCHARGE

CONTROL BOX LEFT RETURN

2’ PRIMARY SERVICE ACCESS

CPCP

2’ SECONDARY

16.0 in

40.6 cm

CMP

1.0 in

2.5 cm

18.0 in

45.7 cm

14.2 in

36.1 cm

CP CP

88.1 in

223.8 cm

86.3 in

219.1 cm

16.0 in

40.6 cm

18.0 in

14.2 in

45.7 cm

36.1 cm

1.5 in

3.7 cm

1.0 in

2.5 cm

SERVICE ACCESS

Legend

AP = Alternate Service Panel BP = Blower Service Panel CP = Control Access Panel CMP = Compressor Service Panel

2.9 in

7.3 cm

TOP VIEW

L or R Return

34.0 in

86.4 cm

1.5 in

3.7 cm

SIDE VIEW

L or R Return

66.0 in

167.5 cm

34.0 in

86.4 cm

66.0 in

167.5 cm

13.8 in

35.1 cm

2.0 in

5.1 cm

18.0 in

45.8 cm

AP CMP

TOP PANEL COVER

16.0 in

40.6 cm

88.1 in

223.8 cm

86.3 in

219.1 cm

88.1 in

223.8 cm

16.0 in

40.6 cm

18.0 in

45.8 cm

CONTROL BOX

RIGHT RETURN

2’ PRIMARY SERVICE ACCESS

13.8 in

35.1 cm

2.0 in

5.1 cm

AIR COILS

41.8 in

106.2 cm

DRAIN CONNECTION

24.5 in

62.2 cm

19.0 in

48.2 cm

40.4 in

102.6 cm

15.2 in

38.7 cm

2.6 in

6.5 cm

6.5 in

16.5 cm

1.7 in

4.4 cm

2.0 in

5.1 cm

LEFT RETURN

TOP OR SIDE DISCHARGE

ELECTRICAL CONNECTIONS

WATER OUT

WATER IN

13.0 in

33.0 cm

6.0 in

15.2 cm

2.0 in

5.1 cm

RIGHT RETURN

ELECTRICAL CONNECTIONS

WATER OUT

WATER IN

13.0 in

33.0 cm

6.0 in

15.2 cm

1.7 in

4.4 cm

AIR COILS

40.4 in

41.8 in

102.6 cm

106.2 cm

DRAIN CONNECTION

19.0 in

15.2 in

48.2 cm

38.7 cm

2.6 in

6.5 cm

6.5 in

16.5 cm

24.5 in

62.2 cm

REV 8/16/07

ENVISION 7-25 TONS INSTALLATION MANUAL

Horizontal Dimensions

7-10 Tons

2’ SECONDARY SERVICE ACCESS

4.1

26.2

15.6

7.6

7.6 15.6

RIGHT RETURN

BP BP

Legend

AP = Alternate Service Panel BP = Blower Service Panel CP = Control Access Panel CMP = Compressor Service Panel

CMP

2’ PRIMARY

SERVICE ACCESS

TOP VIEW

37.3

34.5

SIDE VIEW

29.929.9

CMP

92.5

90.0

89.0

85.9 1.6

WATER OUT

LEFT RETURN

34.5

CPCP

WATER OUT

92.5

90.0

89.0

85.91.6

CMP

2’ SECONDARY SERVICE ACCESS

29.929.9

15.6

4.1

26.2

7.6

7.615.6

SIDE DISCHARGE

OPTION

21.0

20.1

2.9

6.1

18.6

3.4 WATER IN

15.62

DRAIN CONNECTION

13.5

END DISCHARGE

OPTION

23.5

24.5

END VIEW

24.5

23.5

END DISCHARGE

OPTION

DRAIN CONNECTION

13.5

WATER IN

15.62

18.6

3.4

SIDE DISCHARGE

OPTION

21.0

20.1

2.9

6.1

REV 4/28/08

ENVISION 7-25 TONS INSTALLATION MANUAL

Installing Horizontal Units

Mounting Horizontal Units

Units are available with side or end discharge in left-hand or right-hand return air configurations. Horizontal units are normally suspended from a ceiling by four 1/2 in. diameter threaded rods. The rods are usually attached to the unit corners by the bottom panel mounting channel and the mounting grommets furnished with each unit.

CAUTION: Do not use rods smaller than 1/2 in. diameter since they may not be strong enough to support the unit. The rods must be securely anchored to the ceiling (the units are approximately 800 lbs.).

Figure 1: Typical Horizontal Application

1/2”

Threaded Rods

(4)

Power

Disconnect

Low Voltage

Flexible Duct

Collar

Hose Kits

Ball Valves

Insulate supply plenum and use at least a 90° elbow to reduce noise

P/T Plugs

Isolation Grommets (Included)

Condensate

Drain

Connection

Water Loop

Layout the threaded rods per the dimensions in Figure 2. Assemble the hangers to the unit as shown in Figure 3. Securely tighten the brackets to the unit. When attaching the hanger rods to the bracket, a double nut is recommended since vibration could loosen a single nut. The unit should be pitched approximately 1/2 in. towards the drain in both directions, to facilitate condensate removal.

Figure 3: Mounting HardwareFigure 2: Mounting Rod Layout

1/2 in. Threaded Rod

To p V i e w

(not included)

90.5

26.244.13

Isolator

Washer

(not included)

Hex Nuts

(not included)

Vibration

ENVISION 7-25 TONS INSTALLATION MANUAL

Installing Horizontal Units cont.

Horizontal Unit Corner Weight Distribution

ABCD

Front Front Back Back

Model Return / Discharge Left Right Right Left

080 - 120

Approximate

Left / Side or End 30% 26% 22% 22% Right / Side or End 26% 30% 22% 22%

Controls

Duct System

An air outlet collar is provided on vertical top flow units and all horizontal units to facilitate a duct connection. A flexible connector is recommended for discharge and return air duct connections on metal duct systems. Uninsulated duct should be insulated with a minimum of 1-inch duct insulation. Application of the unit to uninsulated ductwork in an unconditioned space is not recommended as the unit’s performance will be adversely affected.

If the unit is connected to existing ductwork, check the duct system to ensure that it has the capacity to accommodate the air required for the unit application. If the duct is too small, as in the replacement of heating only systems, larger ductwork should be installed. All existing ductwork should be checked for leaks and repaired if necessary.

The duct system should be sized to handle the design airflow quietly and efficiently. To maximize sound attenuation of the unit blower, the supply and return plenums should include an internal duct liner of fiberglass or constructed of ductboard for the first few feet. On systems employing a sheet metal duct system, canvas connectors should be used between the unit and the ductwork. If air noise or excessive airflow is a problem, the blower speed can be changed.

Water Piping

The proper water flow must be provided to each unit whenever the unit operates. To assure proper flow, use pressure/temperature ports to determine the flow rate. These ports should be located at the supply and return water connections on the unit. The proper flow rate cannot be accurately set without measuring the water pressure drop through the refrigerant-towater heat exchanger.

All source water connections on commercial units are fittings that accept a male pipe thread (MPT). Insert the connectors by hand, then tighten the fitting with a wrench to provide a leakproof joint. When connecting to an open loop (groundwater) system, thread any copper MPT fitting into the connector and tighten in the same manner as described above.

Figure 5: Unit Pitch for DrainFigure 4: Suggested Layout of Condensate

1/2'' Pitch

Vent (if needed)

3/4 in. PVC 1/8 in. per foot

3/4 in. PVC tube stub

3/4 in. PVC Coupling

1.5 in.

ENVISION 7-25 TONS INSTALLATION MANUAL

Installing Vertical Units

Mounting Vertical Units

Units are available with top/side discharge, left-hand or right-hand return air configurations. Vertical units are assembled on rails which facilitate moving and placement of the units. It is not necessary to anchor the unit to the floor.

Duct System

A supply air duct flange is provided for field installation to facilitate the secure duct connection at the job site. A flexible connector is recommended for discharge and return air duct connections on metal duct systems to prevent vibration transmission. It is recommended that all ductwork be insulated with a minimum of 1/2-inch coated insulation. Installation of the units with uninsulated ductwork in an unconditioned space is not recommended, as the system’s performance will be adversely affected.

Condensate Drain

In vertical units, the internal condensate drain assembly consists of a flexible drain tube which is attached to the drain pan and a 3/4-inch (7-10 tons) and 1-inch (13-25 tons) female pipe thread. An external water trap is not required as the drain tube serves as a trapping loop. The field-installed piping and unit connection must be properly installed and sealed to prevent water leakage.

Figure 6: Typical Vertical Application

Flexible duct Collar

Control Box

Water Supply and Return Connections

Condensate Drain

ACCESS

PAN EL

ACCESS

PANEL

ENVISION 7-25 TONS INSTALLATION MANUAL

Water Quality

Water Quality Guidelines

In ground water situations where scaling could be heavy or where biological growth such as iron bacteria will be present, a closed loop system is recommended. The heat exchanger coils in ground water systems may, over a period of time, lose heat exchange capabilities due to a buildup of mineral deposits inside. These can be cleaned, but only by a qualified service mechanic, as special solutions and pumping equipment are required. Hot water generator coils can likewise become scaled and possibly plugged. In areas with extremely hard water, the owner should be informed that the heat exchanger may require occasional flushing.

Units with cupronickel heat exchangers are recommended for open loop applications due to the increased resistance to build-up and corrosion, along with reduced wear caused by acid cleaning.

Material Copper 90/10 Cupronickel 316 Stainless Steel

pH Acidity/Alkalinity

Scaling

Corrosion

Iron Fouling

(Biological Growth)

Erosion

NOTES: Grains = ppm divided by 17

mg/L is equivalent to ppm

Calcium and

Magnesium Carbonate

Hydrogen Sulfide

Chlorides Less than 20 ppm Less than 125 ppm Less than 300 ppm

Carbon Dioxide Less than 50 ppm 10 - 50 ppm 10 - 50 ppm

Ammonia Less than 2 ppm Less than 2 ppm Less than 20 ppm

Ammonia Chloride Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Ammonia Nitrate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Ammonia Hydroxide Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Ammonia Sulfate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Total Dissolved Solids (TDS) Less than 1000 ppm 1000 - 1500 ppm 1000 - 1500 ppm

LSI Index +0.5 to -0.5 +0.5 to -0.5 +0.5 to -0.5

Iron, FE

Bacterial Iron Potential

Iron Oxide

Suspended Solids

Threshold Velocity

(Fresh Water)

Less than 0.5 ppm (rotten egg

Sulfates Less than 125 ppm Less than 125 ppm Less than 200 ppm

Chlorine Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

+ (Ferrous)

smell appears at 0.5 ppm)

Less than 1 ppm, above this

level deposition will occur

Less than 10 ppm and filtered

for max. of 600 mic

7 - 9 7 - 9 7 - 9

(Total Hardness)

less than 350 ppm

< 0.2 ppm < 0.2 ppm < 0.2 ppm

ron size

< 6 ft/sec < 6 ft/sec < 6 ft/sec

(Total Hardness)

less than 350 ppm

10 - 50 ppm Less than 1 ppm

Less than 1 ppm, above this

level deposition will occur

Less than 10 ppm and filtered

for max. of 600 micron size

Less than 1 ppm, above this

level deposition will occur

Less than 10 ppm and filtered

for max. of 600 micron size

(Total Hardness)

less than 350 ppm

2/22/12

Water Connections

All supply and return water connections are female pipe thread of size specified in physical dimensions. Never use flexible hoses smaller than separate water connections on the unit and limit hose length to 10 ft. per connection. Check carefully for water leaks.

Interior Piping

All units are recommended to be connected to supply and return piping in a two-pipe reverse return configuration. A reverse return system is inherently self-balancing and requires only trim balancing when multiple quantities of units with different flow and pressure drop characteristics are connected to the same loop. A direct return system may also be made to work acceptably, but proper water flow balance is more difficult to achieve and maintain.

Supply and return runouts are usually connected to the unit by short lengths of high pressure flexible hose which are sound attenuators for both unit operating noise and hydraulic pumping noise. One end of the hose should have a swivel fitting to facilitate removal for service. Hard piping can also be connected directly to the unit although it is not recommended since no vibration or noise attenuation can be accomplished. The hard piping must have unions to facilitate unit removal (see figure 1 & 6) for typical application).

Some flexible hose threaded fittings are supplied with sealant compound. If not, apply Teflon tape to assure a tight seal. Supply and return shutoff valves are required at each unit. The return shutoff valve can be used for balancing and should be adjusted for proper flow required, or a manual or automatic flow control device should be on the leaving water hose assembly.

No unit should be connected to the supply and return piping until the water system has been cleaned and flushed completely. After the cleaning and flushing has taken place, the initial connection should have all valves wide open in preparation for water system filling.

System Cleaning and Flushing

ENVISION 7-25 TONS INSTALLATION MANUAL

Cleaning and Flushing

Prior to start up of any heat pump, the water circulating system must be cleaned and flushed of all dirt and debris.

If the system is equipped with water shutoff valves, the supply and return runouts must be connected together at each unit location (This will prevent the introduction of dirt into the unit, see Figure 7). The system should be filled at the water make-up connection with all air vents open. After filling, vents should be closed.

The contractor should start the main circulator with the pressure reducing valve makeup open. Vents should be checked in sequence to bleed off any trapped air and to verify circulation through all components of the system.

As water circulates through the system, the contractor should check and repair any leaks found in the piping system. Drain(s) at the lowest point(s) in the system should be opened for initial flush and blowdown, making sure water fill valves are set at the same rate. Check the pressure gauge at the pump suction and manually adjust the make-up water valve to hold the same positive pressure both before and after opening the drain valves. Flushing should continue for at least two hours, or longer if required, until drain water is clean and clear.

The supplemental heater and/or circulator pump, if used, should be shut off. All drains and vents should be opened to completely drain the system. Short-circuited supply and return runouts should now be connected to the unit supply and return connections.

Figure 7: Flushing with Water Shutoff Valve Equipped Systems

Return Runout

Supply Runout

Mains

Rubber Hose

Runouts Initially Connected Together

Refill the system with clean water. Test the system water for acidity and treat as required to leave the water slightly alkaline (pH 7.5 to 8.5). The specified percentage of antifreeze may also be added at this time. Use commercial grade antifreeze designed for HVAC systems only. Environol™ brand antifreeze is recommended..

Once the system has been filled with clean water and antifreeze (if used), precautions should be taken to protect the system from dirty water conditions. Dirty water will result in system-wide degradation of performance, and solids may clog valves, strainers, flow regulators, etc. Additionally, the heat exchanger may become clogged which reduces compressor service life and can cause premature unit failure.

In boiler/tower application, set the loop control panel set points to desired temperatures. Supply power to all motors and start the circulating pumps. After full flow has been established through all components including the heat rejector (regardless of season), air vented and loop temperatures stabilized, each of the units will be ready for check, test and start up and for air and water balancing.

Ground Source Loop System Checkout

Once piping is completed between the unit pumping system and ground loop, final purging and charging of the loop is needed. A high pressure pump is needed to achieve adequate flow velocity in the loop to purge air and dirt particles from the loop itself. Antifreeze solution is used in most areas to prevent freezing. Flush the system adequately to remove as much air as possible; then pressurize the loop to a static pressure of 40-50 PSI (summer) or 50-75 PSI (winter). This is normally adequate for good system operation. Loop static pressure may decrease soon after initial installation, due to pipe expansion and loop temperature change. Running the unit for at least 30 minutes after the system has been completely purged of air will allow for the “break-in” period. It may be necessary to adjust static loop pressure (by adding water) after the unit has run for the first time. Loop static pressure will also fluctuate with the seasons. Pressures will be higher in the winter months than during the cooling season. This fluctuation is normal and should be considered when charging the system initially.

Ensure the pump provides adequate flow through the unit by checking pressure drop across the heat exchanger. Usually 2.25-3.0 GPM of flow per ton of cooling capacity is recommended in earth loop applications.

ENVISION 7-25 TONS INSTALLATION MANUAL

Electrical Connections

General

Be sure the available power is the same voltage and phase as that shown on the unit serial plate. Line and low voltage wiring must be done in accordance with local codes or the National Electric Code.

Unit Power Connection

Line voltage connection is made by connecting the incoming line voltage wires to the terminal block as shown on the unit’s wiring diagram attached to the inside front panel. Consult the Unit Electrical Data below for correct fuse size.

208 Volt Operation

NOTE: All 208-230 volt units are factory wired for 230 volt operation. For 208 volt operation, the red and the blue transformer wires must be switched between terminal strip PS and contactor RB.

Electrical Data

ENVISION 7-25 TONS INSTALLATION MANUAL

Model

Horizontal

080 460/60/3 414/506 9.0 5.8 38.0 2.4 1.5 13.9 15.4 20.0

080** 460/60/3 414/506 9.0 5.8 38.0 3.1 2.0 14.6 16.1 20.0

095 460/60/3 414/506 9.5 6.1 41.0 3.1 2.0 15.3 16.8 20.0

095** 460/60/3 414/506 9.5 6.1 41.0 4.3 3.0 16.5 18.0 20.0

120 460/60/3 414/506 12.1 7.7 52.0 4.3 3.0 19.8 21.7 25.0

Vertical

080 460/60/3 414/506 9.0 5.8 38.0 1.8 1.0 13.3 14.8 20.0

080** 460/60/3 414/506 9.0 5.8 38.0 2.4 1.5 13.9 15.4 20.0

095 460/60/3 414/506 9.5 6.1 41.0 2.4 1.5 14.6 16.1 20.0

095** 460/60/3 414/506 9.5 6.1 41.0 3.1 2.0 15.3 16.8 20.0

120 460/60/3 414/506 12.1 7.7 52.0 3.1 2.0 18.6 20.5 25.0

120** 460/60/3 414/506 12.1 7.7 52.0 4.3 3.0 19.8 21.7 25.0

160 460/60/3 414/506 16.5 10.6 75.0 1.8 1.0 24.8 54.0 35.0

160** 460/60/3 414/506 16.5 10.6 75.0 2.4 1.5 26.0 28.7 35.0

180 460/60/3 414/506 17.5 11.2 75.0 2.4 1.5 27.2 30.0 40.0

180** 460/60/3 414/506 17.5 11.2 75.0 3.1 2.0 28.6 31.4 40.0

240 460/60/3 414/506 26.0 16.6 114.0 3.1 2.0 39.5 43.6 60.0

240** 460/60/3 414/506 26.0 16.6 114.0 4.3 3.0 41.9 46.0 60.0

300 460/60/3 414/506 28.0 17.9 125.0 4.3 3.0 44.4 48.9 60.0

*Ratings per each compressor - unit supplied with two 9/10/07 **With optional motor ***Ratings per each blower motor - Vertical models 160-300 supplied with two.

Rated Voltage

Voltage Min/Max

208-230/60/3 187/253 16.3 10.4 88.0 4.8 1.5 25.7 28.3 35.0

575/60/3 518/632 5.9 3.8 36.5 1.9 1.5 9.5 10.4 10.0

208-230/60/3 187/253 16.3 10.4 88.0 6.2 2.0 27.1 29.7 40.0

575/60/3 518/632 5.9 3.8 36.5 2.5 2.0 10.1 11.0 10.0

208-230/60/3 187/253 21.2 13.6 83.1 6.2 2.0 33.3 36.7 50.0

575/60/3 518/632 7.8 5.0 34.0 2.5 2.0 12.5 13.7 15.0

208-230/60/3 187/253 21.2 13.6 83.1 9.2 3.0 36.3 39.7 50.0

575/60/3 518/632 7.8 5.0 34.0 3.4 3.0 13.4 14.6 15.0

208-230/60/3 187/253 24.9 15.9 110.0 9.2 3.0 41.1 45.1 60.0

575/60/3 518/632 8.9 5.7 38.9 3.4 3.0 14.8 16.2 20.0

208-230/60/3 187/253 16.3 10.4 88.0 3.6 1.0 24.5 27.1 35.0

575/60/3 518/632 5.9 3.8 36.5 1.5 1.0 9.0 9.9 10.0

208-230/60/3 187/253 16.3 10.4 88.0 4.8 1.5 25.7 28.3 35.0

575/60/3 518/632 5.9 3.8 36.5 1.9 1.5 9.5 10.4 10.0

208-230/60/3 187/253 21.2 13.6 83.1 4.8 1.5 31.9 35.3 45.0

575/60/3 518/632 7.8 5.0 34.0 1.9 1.5 11.9 13.1 15.0

208-230/60/3 187/253 21.2 13.6 83.1 6.2 2.0 33.3 36.7 50.0

575/60/3 518/632 7.8 5.0 34.0 2.5 2.0 12.5 13.7 15.0

208-230/60/3 187/253 24.9 15.9 110.0 6.2 2.0 38.1 42.1 50.0

575/60/3 518/632 8.9 5.7 38.9 2.5 2.0 13.9 15.3 20.0

208-230/60/3 187/253 24.9 15.9 110.0 9.2 3.0 41.1 45.1 60.0

575/60/3 518/632 8.9 5.7 38.9 3.4 3.0 14.8 16.2 20.0

208-230/60/3 187/253 35.0 22.4 149.0 3.6 1.0 52.0 57.6 80.0

575/60/3 518/632 12.0 7.7 54.0 1.5 1.0 18.4 20.3 25.0

208-230/60/3 187/253 35.0 22.4

575/60/3 518/632 12.0 7.7 54.0 1.9 1.5 19.2 21.1 25.0

208-230/60/3 187/253 36.2 23.2 164.0 4.8 1.5 56.0 61.8 80.0

575/60/3 518/632 12.3 7.9 54.0 1.9 1.5 19.6 21.6 25.0

208-230/60/3 187/253 36.2 23.2 164.0 6.2 2.0 58.8 64.6 80.0

575/60/3 518/632 12.3 7.9 54.0 2.5 2.0 20.8 22.8 30.0

208-230/60/3 187/253 47.0 30.1 225.0 6.2 2.0 72.6 80.1 110.0

575/60/3 518/632 19.0 12.2 80.0 2.5 2.0 29.3 32.4 40.0

208-230/60/3 187/253 47.0 30.1 225.0 9.2 3.0 78.6 86.1 110.0

575/60/3 518/632 19.0 12.2 80.0 3.4 3.0 31.1 34.2 45.0

208-230/60/3 187/253 52.0 33.3 239.0 9.2 3.0 85.0 93.3 125.0

575/60/3 518/632 20.0 12.8 80.0 3.4 3.0 32.4 35.6 45.0

Compressor*

MCC RLA LRA FLA*** *** FLA Amp HACR

149.0 4.8 1.5 54.4 60.0 80.0

Blower Blower Total Min Max

Motor HP Unit Circ Fuse/

HACR circuit breaker in USA only All fuses Class RK-5

ENVISION 7-25 TONS INSTALLATION MANUAL

NLV080 - Blower Performance Data

Belt Drive

Airflow in CFM with dry coil and clean air filter.

Rated CFM

MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 BHP 0.29 0.33 0.38 0.37 0.45 0.47 0.50 0.54 0.58 0.64 0.69 0.71 0.73 0.84 0.95 1.05

2200

RPM 437 478 518 539 586 617 647 677 707 736 765 775 809 843 876 909 TURNS OPEN 4.0 3.0 2.0 1.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 3.5 3.0 2.5 2.0 1.5 MTR/SHEAVE 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 5.0 BHP 0.38 0.44 0.43 0.52 0.56 0.59 0.63 0.68 0.73 0.78 0.81 0.83 0.94 1.05 1.13 1.20

2400

RPM 477 517 538 585 615 645 675 704 734 763 774 807 841 874 907 940 TURNS OPEN 3.0 2.0 1.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 3.5 3.0 2.5 2.0 1.5 1.0 MTR/SHEAVE 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 5.0 BHP 0.49 0.50 0.59 0.63 0.67 0.72 0.77 0.83 0.89 0.91 0.94 1.05 1.17 1.24 1.32

2600

RPM 516 537 584 614 643 673 702 732 761 772 806 839 871 905 938 TURNS OPEN 2.0 1.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 3.5 3.0 2.5 2.0 1.5 1.0 MTR/SHEAVE 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.05.05.05.05.05.0 BHP 0.56 0.66 0.71 0.75 0.81 0.86 0.92 0.99 1.02 1.05 1.17 1.29 1.37 1.44

2800

RPM 536 582 612 642 671 700 729 758 770 804 837 869 903 936 TURNS OPEN 1.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 3.5 3.0 2.5 2.0 1.5 1.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 5.0 BHP 0.72 0.78 0.83 0.89 0.95 1.02 1.09 1.12 1.16 1.29 1.41 1.49 1.57

3000

RPM 581 611 640 669 698 727 756 768 802 835 867 900 933 TURNS OPEN 5.0 4.5 4.0 3.5 3.0 2.5 2.0 3.5 3.0 2.5 2.0 1.5 1.0

MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 5.0 BHP 0.83 0.90 0.97 1.03 1.11 1.18 1.14 1.27 1.40 1.53 1.61 1.70

3200

RPM 610 639 668 697 726 754 767 800 833 865 898 930 TURNS OPEN 4.5 4.0 3.5 3.0 2.5 2.0 3.5 3.0 2.5 2.0 1.5 1.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 BHP 0.97

3400

RPM 637 666 695 725 731 765 798 830 862 895 927 TURNS OPEN 4.0 3.5 3.0 2.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0

Bold Face Requires 1.5 HP Motor

A=Std Static/Std Mtr;B=Low Static/Std. Mtr;C=High Static/Std. Mtr;D=Std Static/Large Mtr;E=High Static/Large Mtr Units factory shipped with standard static sheave and drive at 3 turns open (2600 cfm @ 0.6 in. ESP). Other speeds require field selection. ISO/AHRI rating point with standard static sheave and drive at 3 turns open (2600 cfm @ 0.6 in. ESP). Other speeds require field selection. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions. Do not operate in gray region. "na" = information not available at time of printing. All airflow is rated at lowest Voltage if unit is dual Voltage rated, i.e. 208V for 208-230V units. 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, and 400 fpm by 0.12in. wg.

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5

1.04 1.11 1.19 1.23 1.30 1.37 1.51 1.64 1.73 1.82

External Static Pressure (in. w.g.)

07/25/07

ENVISION 7-25 TONS INSTALLATION MANUAL

NLV095 - Blower Performance Data

Belt Drive

Airflow in CFM with dry coil and clean air filter.

External Static Pressure (in. w.g.)

Rated CFM

MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 4.0 4.0 BHP 0.61 0.64 0.66 0.68 0.76 0.81 0.87 0.89 0.94 1.05

2600

RPM 581 601 621 663 703 739 774 784 827 867 TURNS OPEN 5.0 4.5 4.0 3.0 2.0 1.5 1.0 0.0 2.0 1.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 4.0 4.0 4.0 BHP 0.65 0.66 0.68 0.75 0.86 0.87 0.88 1.02 1.05 1.14 1.23

2800

RPM 580 600 621 662 701 722 742 782 805 855 905 TURNS OPEN 5.0 4.5 4.0 3.0 2.0 1.5 1.0 0.0 2.5 1.5 0.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 BHP 0.72 0.73 0.74 0.84 0.96 0.98 0.99 1.13 1.14 1.17 1.23 1.36 1.48 1.59 1.69

3000

RPM 579 600 620 660 700 721 741 780 797 813 845 890 940 960 991 TURNS OPEN 5.0 4.5 4.0 3.0 2.0 1.5 1.0 0.0 3.0 2.5 2.0 1.0 0.0 3.0 2.5 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 BHP 0.79 0.80 0.82 0.93 1.06 1.08 1.10 1.25 1.26 1.31 1.36 1.49 1.62 1.67 1.85 2.03

3200

RPM 578 599 619 659 699 719 739 778 795 819 843 890 937 942 967 991 TURNS OPEN 5.0 4.5 4.0 3.0 2.0 1.5 1.0 0.0 3.0 2.5 2.0 1.0 0.0 3.0 2.5 2.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 BHP 0.84 0.89 1.01 1.15 1.17 1.20 1.35 1.36 1.42 1.48 1.52 1.61 1.82 1.90 1.99 2.03

3400

RPM 597 619 658 697 718 738 776 794 818 841 857 888 940 963 986 1034 TURNS OPEN 4.5 4.0 3.0 2.0 1.5 1.0 0.0 3.0 2.5 2.0 1.5 1.0 3.0 2.5 2.0 1.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 5.0 BHP 0.97 1.09 1.23 1.26 1.29 1.45 1.47 1.53 1.60 1.67 1.74 1.95 2.05 2.14 2.19 2.41

3600

RPM 618 657 696 716 736 775 792 815 838 862 885 937 960 983 1031 1077 TURNS OPEN 4.0 3.0 2.0 1.5 1.0 0.0 3.0 2.5 2.0 1.5 1.0 3.0 2.5 2.0 1.0 0.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 5.0 BHP 1.17 1.32 1.35 1.38 1.55

3800

RPM 656 695 715 735 773 790 814 837 860 883 935 958 981 1029 1074 TURNS OPEN 3.0 2.0 1.5 1.0 0.0 3.0 2.5 2.0 1.5 1.0 3.0 2.5 2.0 1.0 0.0

Bold Face Requires Larger 2 HP Motor

A=Std Static/Std Mtr;B=Low Static/Std. Mtr;C=High Static/Std. Mtr;D=Std Static/Large Mtr;E=High Static/Large Mtr Units factory shipped with standard static sheave and drive at 2 turns open (2800 cfm @ 0.6 in. ESP). Other speeds require field selection. ISO/AHRI rating point with standard static sheave and drive at 1 turns open (2800 cfm @ 0.7 in. ESP). Other speeds require field selection. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions. Do not operate in gray region. "na" = information not available at time of printing. All airflow is rated at lowest Voltage if unit is dual Voltage rated, i.e. 208V for 208-230V units. 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, and 400 fpm by 0.12in. wg.

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.2 1.4 1.6 1.8 2.0

1.57 1.64 1.71 1.78 1.86 2.09 2.18 2.28 2.34 2.57

7/25/07

ENVISION 7-25 TONS INSTALLATION MANUAL

NLV120 - Blower Performance Data

Belt Drive

Airflow in CFM with dry coil and clean air filter.

Rated CFM

MTR/SHEAVE 2.0 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 BHP 0.50 0.51 0.59 0.68 0.68 0.79 0.92 0.92 0.92 1.08 1.16 1.30 1.31 1.41 1.59

3200

RPM 418 438 480 521 541 582 623 644 665 705 732 787 826 867 932 TURNS OPEN 4.5 4.0 3.0 2.0 1.0 5.0 4.0 3.5 3.0 2.0 1.5 0.5 2.0 1.0 0.0 MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 BHP 0.58 0.67 0.77 0.78 0.90 1.04 1.05 1.07 1.16 1.26 1.28 1.37 1.47 1.65

3400

RPM 438 480 520 541 582 622 643 664 694 724 746 795 843 888 TURNS OPEN 4.0 3.0 2.0 1.0 5.0 4.0 3.5 3.0 2.5 1.5 1.0 3.0 1.5 0.5 MTR/SHEAVE 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 BHP 0.74 0.86 0.88 1.00 1.02 1.17 1.20 1.22 1.24 1.44 1.47 1.52 1.82 1.90

3600

RPM 479 519 540 581 602 643 663 684 704 745 765 806 866 906 TURNS OPEN 3.0 2.0 1.0 5.0 4.5 3.5 3.0 2.5 2.0 1.0 3.5 2.5 1.0 0.0 MTR/SHEAVE 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 BHP 0.94 0.96 1.10 1.15 1.24 1.32 1.35 1.38 1.41 1.62 1.66 1.91 2.06

3800

RPM 519 539 581 622 642 662 683 704 723 764 784 823 884 TURNS OPEN 2.0 1.0 5.0 4.0 3.5 3.0 2.5 2.0 1.5 3.5 3.0 2.0 0.5 MTR/SHEAVE 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 BHP 1.04 1.20 1.26 1.35 1.44 1.47 1.51 1.55 1.58 1.81 1.86 1.96 2.17 2.25 2.39 2.66

4000

RPM 539 580 621 641 661 682 703 724 744 783 803 843 893 933 970 1017 TURNS OPEN 1.0 5.0 4.0 3.5 3.0 2.5 2.0 1.5 1.0 3.0 2.5 1.5 0.0 3.5 2.5 1.5 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 4.0 4.0 4.0 4.0 4.0 5.0 5.0 5.0 BHP 1.28 1.36 1.45 1.54 1.59 1.63 1.67 1.72 1.95 2.01 2.06 2.19 2.31 2.48 2.75 3.03

4200

RPM 580 620 641 661 682 702 722 742 782 802 822 863 902 944 991 1037 TURNS OPEN 5.0 4.0 3.5 3.0 2.5 2.0 1.5 1.0 3.0 2.5 2.0 1.0 0.0 3.0 2.0 1.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0

BHP 1.46 1.55 1.65 1.70 1.75 1.80 1.85 2.09 2.15 2.21 2.28 2.41 2.54 2.80 3.08

4400

RPM 620 640 660 681 701 722 742 781 801 821 841 881 919 965 1012 TURNS OPEN 4.0 3.5 3.0 2.5 2.0 1.5 1.0 3.0 2.5 2.0 1.5 0.5 3.5 2.5 1.5

Bold Face Requires Larger 3 HP Motor

A=Std Static/Std Mtr;B=Low Static/Std. Mtr;C=High Static/Std. Mtr;D=Std Static/Large Mtr;E=High Static/Large Mtr Units factory shipped with standard static sheave and drive at 3 turns open (3600 cfm @ 0.6 in. ESP). Other speeds require field selection. ISO/AHRI rating point with standard static sheave and drive at 1 turns open (3600 cfm @ 0.9 in. ESP). Other speeds require field selection. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions. Do not operate in gray region. "na" = information not available at time of printing. All airflow is rated at lowest Voltage if unit is dual Voltage rated, i.e. 208V for 208-230V units. 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, and 400 fpm by 0.12 in. wg.

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.2 1.4 1.6 1.8 2.0

External Static Pressure (in. w.g.)

1.0 1.0 4.0 4.0 4.0 4.0 4.0 5.0 5.0 5.0

07/25/07

ENVISION 7-25 TONS INSTALLATION MANUAL

NLV160 - Blower Performance Data

Belt Drive

Airflow in CFM with dry coil and clean air filter.

Rated CFM

MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 BHP 0.29 0.33 0.38 0.37 0.45 0.47 0.50 0.54 0.58 0.64 0.69 0.71 0.73 0.84 0.95 1.05

4400

RPM 437 478 518 539 586 617 647 677 707 736 765 775 809 843 876 909 TURNS OPEN 4.0 3.0 2.0 1.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 3.5 3.0 2.5 2.0 1.5 MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 BHP 0.33 0.38 0.41 0.44 0.50 0.53 0.57 0.61 0.66 0.71 0.75 0.77 0.84 0.95 1.04 1.13

4600

RPM 457 498 528 562 601 631 661 691 720 750 770 791 825 858 892 925 TURNS OPEN 3.5 2.5 1.5 0.5 4.5 4.0 3.5 3.0 2.5 2.0 1.0 3.0 2.5 2.0 1.5 1.0 MTR/SHEAVE 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 5.0 BHP 0.38 0.44 0.43 0.52 0.56 0.59 0.63 0.68 0.73 0.78 0.81 0.83 0.94 1.05 1.13 1.20

4800

RPM 477 517 538 585 615 645 675 704 734 763 774 807 841 874 907 940 TURNS OPEN 3.0 2.0 1.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 3.5 3.0 2.5 2.0 1.5 1.0 MTR/SHEAVE 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 5.0 BHP 0.44 0.47 0.51 0.58 0.62 0.66 0.70 0.75 0.81 0.85 0.87 0.94 1.05 1.15 1.22 0.60

5000

RPM 497 527 561 599 629 659 688 718 747 768 790 823 856 889 923 470 TURNS OPEN 2.5 1.5 1.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 3.0 2.5 2.0 1.5 1.0 0.5 MTR/SHEAVE 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 5.0 BHP 0.49 0.50 0.59 0.63 0.67 0.72 0.77 0.83 0.89 0.91 0.94 1.05 1.17 1.24 1.32

5200

RPM 516 537 584 614 643 673 702 732 761 772 806 839 871 905 938 TURNS OPEN 2.0 1.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 3.5 3.0 2.5 2.0 1.5 1.0 MTR/SHEAVE 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 5.0 BHP 0.53 0.58 0.65 0.69 0.74 0.79 0.85 0.91 0.95 0.98 1.05 1.17 1.27 1.34 0.66

5400

RPM 526 560 598 628 657 686 716 745 766 788 821 854 887 TURNS OPEN 1.5 1.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 3.0 2.5 2.0 1.5 1.0 0.5 MTR/SHEAVE 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.0 5.0 5.0 5.0 5.0 5.0 BHP 0.56 0.66 0.71 0.75 0.81 0.86 0.92 0.99 1.02 1.05 1.17 1.29 1.37 1.44

5600

RPM 536 582 612 642 671 700 729 758 770 804 837 869 903 936 TURNS OPEN 1.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 3.5 3.0 2.5 2.0 1.5 1.0

Bold Face Requires Larger 1.5 HP Motor

A=Std Static/Std Mtr;B=Low Static/Std. Mtr;C=High Static/Std. Mtr;D=Std Static/Large Mtr;E=High Static/Large Mtr Units factory shipped with standard static sheave and drive at 3 turns open (5000 cfm @ 0.6 in. ESP). Other speeds require field selection. ISO/AHRI rating point with standard static sheave and drive at 2.0 turns open (5000 cfm @ 0.7 in. ESP). Other speeds require field selection. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions. Do not operate in gray region. "na" = information not available at time of printing. All airflow is rated at lowest Voltage if unit is dual Voltage rated, i.e. 208V for 208-230V units. 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, and 400 fpm by 0.12 in. wg. BHP is given for each blower. Multiply BHP x 2 for unit BHP.

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5

External Static Pressure (in. w.g.)

920 469

7/25/07

ENVISION 7-25 TONS INSTALLATION MANUAL

NLV180 - Blower Performance Data

Belt Drive

Airflow in CFM with dry coil and clean air filter.

Rated CFM

MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 4.0 4.0 BHP 0.61 0.64 0.66 0.68 0.76 0.81 0.87 0.89 0.94 1.05

5200

RPM 581 601 621 663 703 739 774 784 827 867 TURNS OPEN 5.0 4.5 4.0 3.0 2.0 1.5 1.0 0.5 2.0 1.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 4.0 4.0 BHP 0.64 0.66 0.71 0.77 0.82 0.85 0.94 0.97 1.04 1.14

5400

RPM 591 611 642 682 712 740 778 795 841 886 TURNS OPEN 4.5 4.0 3.5 2.5 1.5 1.0 0.5 0.0 1.5 0.5 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 4.0 4.0 4.0 BHP 0.65 0.66 0.68 0.75 0.86 0.87 0.88 1.02 1.05 1.14 1.23

5600

RPM 580 600 621 662 701 722 742 782 805 855 905 TURNS OPEN 5.0 4.5 4.0 3.0 2.0 1.5 1.0 0.0 2.5 1.5 0.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 5.0 5.0 BHP 0.69 0.70 0.76 0.86 0.92 0.93 1.01 1.08 1.11 1.19 1.30 0.74 0.80 0.85

5800

RPM 590 610 641 681 711 731 761 790 809 850 898 470 480 496 TURNS OPEN 4.5 4.0 3.5 2.5 1.5 1.0 0.5 0.0 3.0 2.5 2.0 1.0 3.0 2.5 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 BHP 0.72 0.73 0.74 0.84 0.96 0.98 0.99 1.13 1.14 1.17 1.23 1.36 1.48 1.59 1.69

6000

RPM 579 600 620 660 700 721 741 780 797 813 845 890 940 960 991 TURNS OPEN 5.0 4.5 4.0 3.0 2.0 1.5 1.0 0.0 3.0 2.5 2.0 1.0 0.0 3.0 2.5 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0

BHP 0.76 0.77 0.84 0.95 1.02 1.04 1.12 1.20 1.23 1.27 1.36 1.49 1.58 1.72 1.86

6200

RPM 589 609 640 680 710 730 760 788 808 828 868 914 941 963 991 TURNS OPEN 4.5 4.0 3.5 2.5 1.5 1.0 0.5 0.0 2.5 2.0 1.5 0.5 3.5 2.5 2.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 BHP 0.79 0.80 0.82 0.93 1.06 1.08 1.10 1.25 1.26 1.31 1.36 1.49 1.62 1.67 1.85 2.03

6400

RPM 578 599 619 659 699 719 739 778 795 819 843 890 937 942 967 991 TURNS OPEN 5.0 4.5 4.0 3.0 2.0 1.5

Bold Face Requires Larger 2.0 HP Motor

A=Std Static/Std Mtr;B=Low Static/Std. Mtr;C=High Static/Std. Mtr;D=Std Static/Large Mtr;E=High Static/Large Mtr Units factory shipped with standard static sheave and drive at 3 turns open (5600 cfm @ 0.6 in. ESP). Other speeds require field selection. ISO/AHRI rating point with standard static sheave and drive at 1.5 turns open (5600 cfm @ 0.7 in. ESP). Other speeds require field selection. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions. Do not operate in gray region. "na" = information not available at time of printing. All airflow is rated at lowest Voltage if unit is dual Voltage rated, i.e. 208V for 208-230V units. 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, and 400 fpm by 0.12 in. wg. BHP is given for each blower. Multiply BHP x 2 for unit BHP.

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.2 1.4 1.6 1.8 2.0

External Static Pressure (in. w.g.)

1.0 0.0 3.0 2.5 2.0 1.0 0.0 3.0 2.5 2.0

7/25/07

ENVISION 7-25 TONS INSTALLATION MANUAL

NLV240 - Blower Performance Data

Belt Drive

Airflow in CFM with dry coil and clean air filter.

Rated CFM

MTR/SHEAVE 2.0 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 BHP 0.50 0.51 0.59 0.68 0.68 0.79 0.92 0.92 0.92 1.08 1.16 1.30 1.31 1.41 1.59

6400

6800

7200

7600

8000

8400

RPM 580 620 641 661 682 702 722 742 782 802 822 863 902 944 991 1037 TURNS OPEN 5.0 4.0 3.5 3.0 2.5 2.0 1.5 1.0 3.0 2.5 2.0 1.0 0.0 3.0 2.0 1.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 BHP 1.46 1.55 1.65 1.70 1.75 1.80 1.85 2.09 2.15 2.21 2.28 2.41 2.54 2.80 3.08

8800

RPM 620 640 660 681 701 722 742 781 801 821 841 881 919 965 1012 TURNS OPEN 4.0 3.5 3.0 2.5 2.0 1.5 1.0 3.0 2.5 2.0 1.5 0.5 3.5 2.5 1.5

Bold Face Requires Larger 3.0 HP Motor

A=Std Static/Std Mtr;B=Low Static/Std. Mtr;C=High Static/Std. Mtr;D=Std Static/Large Mtr;E=High Static/Large Mtr Units factory shipped with standard static sheave and drive at 2.5 turns open (7600 cfm @ 0.6 in. ESP). Other speeds require field selection. ISO/AHRI rating point with standard static sheave and drive at 2 turns open (7600 cfm @ 0.7 in. ESP). Other speeds require field selection. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions. Do not operate in gray region. "na" = information not available at time of printing. All airflow is rated at lowest Voltage if unit is dual Voltage rated, i.e. 208V for 208-230V units. 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, and 400 fpm by 0.12 in. wg. BHP is given for each blower. Multiply BHP x 2 for unit BHP.

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.2 1.4 1.6 1.8 2.0

External Static Pressure (in. w.g.)

1.0 1.0 4.0 4.0 4.0 4.0 4.0 5.0 5.0 5.0

7/25/07

ENVISION 7-25 TONS INSTALLATION MANUAL

NLV300 - Blower Performance Data

Belt Drive

Airflow in CFM with dry coil and clean air filter.

Rated CFM

MTR/SHEAVE 2.0 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 BHP 1.46 1.49 1.77 1.94 2.11 2.29 2.32 2.39 2.65 2.72 2.80 2.36

8400

RPM 677 696 745 778 810 841 858 878 912 932 951 994 TURNS OPEN 5.0 4.0 3.0 2.0 1.0 4.0 3.5 3.0 2.0 1.5 1.0 4.5 MTR/SHEAVE 2.0 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 BHP 1.55 1.70 1.86 2.03 2.21 2.39 2.42 2.50 2.75 2.83 2.91 2.63 2.61

8800

RPM 674 708 742 774 806 837 853 873 907 926 945 981 1010 TURNS OPEN 5.0 4.0 3.0 2.0 1.0 4.0 3.5 3.0 2.0 1.5 1.0 4.5 4.0 MTR/SHEAVE 2.0 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 BHP 1.63 1.79 1.96 2.13 2.31 2.49 2.52 2.60 2.85 2.93 3.01 2.87 2.87 2.86

9200

RPM 671 705 738 771 802 833 849 869 903 922 940 969 997 1025 TURNS OPEN 5.0 4.0 3.0 2.0 1.0 4.0 3.5 3.0 2.0 1.5 1.0 4.5 4.0 3.5 MTR/SHEAVE 2.0 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 BHP 1.72 1.88 2.04 2.22 2.40 2.58 2.62 2.70 2.95 3.03 3.11 3.09 3.10 3.11

9600

RPM 668 702 735 767 799 829 845 864 898 917 935 959 985 1012 TURNS OPEN 5.0 4.0 3.0 2.0 1.0 4.0 3.5 3.0 2.0 1.5 1.0 4.5 4.0 3.5 MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 BHP 1.96 2.13 2.31 2.49 2.68 2.71 2.79 3.05 3.13 3.21 3.29 3.31 3.33

10000

RPM 699 732 764 795 825 841 860 894 912 931 949 975 1001

TURNS OPEN 4.0 3.0 2.0 1.0 4.0 3.5 3.0 2.0 1.5 1.0 4.5 4.0 3.5 MTR/SHEAVE 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 BHP 2.21 2.39 2.58 2.77 2.81 2.89 3.13 3.22 3.31 3.39 3.51 3.54 3.56

10400

RPM 729 761 792 821 837 856 890 908 926 944 965 990 1016 TURNS OPEN 3.0 2.0 1.0 4.0 3.5 3.0 2.0 1.5 1.0 4.5 4.0 3.5 3.0 MTR/SHEAVE 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 BHP 2.48 2.66 2.85 2.90 2.98 3.23 3.32 3.40 3.48 3.61 3.73 3.76

10800

RPM 758 788 818 833 852 885 904 922 939 960 980 1005 TURNS OPEN 2.0 1.0

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.2 1.4 1.6 1.8 2.0

4.0 3.5 3.0 2.0 1.5 1.0 4.5 4.0 3.5 3.0

External Static Pressure (in. w.g.)

7/25/07

A=Std Static/Std Mtr;B=Low Static/Std. Mtr;C=High Static/Std. Mtr;D=Std Static/Large Mtr;E=High Static/Large Mtr Units factory shipped with standard static sheave and drive at 3.0 turns open (9500 cfm @ 0.7 in. ESP). Other speeds require field selection. ISO/AHRI rating point with standard static sheave and drive at 3.0 turns open (9500 cfm @ 0.7 in. ESP). Other speeds require field selection. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions. Do not operate in gray region. "na" = information not available at time of printing. All airflow is rated at lowest Voltage if unit is dual Voltage rated, i.e. 208V for 208-230V units. 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, and 400 fpm by 0.12 in. wg. BHP is given for each blower. Multiply BHP x 2 for unit BHP.

ENVISION 7-25 TONS INSTALLATION MANUAL

NLH080 - Blower Performance Data

Belt Drive

Airflow in CFM with dry coil and clean air filter.

Rated CFM

MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 4.0 4.0 4.0 4.0 5.0 5.0 5.0 5.0 BHP 0.37 0.40 0.43 0.47 0.52 0.59 0.65 0.71 0.75 0.78 0.81 0.86 0.90

2200

RPM 583 624 665 706 747 770 791 821 865 911 957 986 1015 TURNS OPEN 5.0 4.0 3.0 2.0 1.0 3.0 2.0 1.0 0.0 3.5 3.0 2.5 2.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 4.0 4.0 4.0 4.0 5.0 5.0 5.0 5.0 5.0 BHP 0.45 0.49 0.53 0.59 0.62 0.67 0.70 0.74 0.79 0.85 0.88 0.91 0.95 1.08

2400

RPM 582 623 664 705 746 765 790 820 861 906 938 970 1004 1030 TURNS OPEN 5.0 4.0 3.0 2.0 1.0 3.0 2.0 1.0 0.0 4.0 3.0 2.5 2.0 1.5 MTR/SHEAVE 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 5.0 BHP 0.51 0.56 0.62 0.66 0.69 0.73 0.76 0.84 0.90 0.93 0.96 1.04 1.12 1.17

2600

RPM 602 643 684 726 760 783 805 853 877 916 954 988 1021 1051 TURNS OPEN 4.5 3.5 2.5 1.5 4.0 3.5 2.5 2.0 1.5 3.5 3.0 2.5 1.5 1.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 BHP 0.53 0.58 0.64 0.69 0.76 0.79 0.80 0.94 0.99 1.03 1.15 1.16 1.17 1.27

2800

RPM 581 622 663 704 744 776 802 851 876 900 951 976 1001 1033 TURNS OPEN 5.0 4.0 3.0 2.0 1.0 3.5 3.0 2.0 1.5 1.0 3.0 2.5 2.0 1.5 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.05.05.05.0 5.0 BHP 0.59 0.66 0.73 0.80 0.87 0.90 0.92 1.07 1.08 1.10 1.30 1.33 1.35 1.40 1.44

3000

RPM 580 621 662 702 743 775 801 848 873 898 949 973 997 1022 1046 TURNS OPEN 5.0 4.0 3.0 2.0 1.0 3.5 3.0 2.0 1.5 1.0 3.0 2.5 2.0 1.5 1.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 5.0 BHP 0.72 0.81 0.90 0.98 1.02 1.04 1.19 1.21 1.23 1.44 1.47 1.51 1.54 1.57

3200

RPM 620 661 701 741 773 799 846 871 895 946 970 994 1019 1043 TURNS OPEN 4.0 3.0 2.0 1.0 3.5 3.0 2.0 1.5 1.0 3.02.52.01.51.0

MTR/SHEAVE 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 5.0

BHP 0.87 0.98 1.08 1.12 1.16 1.31 1.34 1.36 1.58 1.62 1.65 1.69 1.73

3400

RPM 660 700 740 772 797 844 869 893 944 968 992 1016 1040 TURNS OPEN 3.0 2.0 1.0 3.5 3.0 2.0 1.5 1.0 3.0 2.5 2.0 1.5 1.0

Bold Face Requires Larger 2 HP Motor

A=Std Static/Std Mtr;B=Low Static/Std. Mtr;C=High Static/Std. Mtr;D=Std Static/Large Mtr;E=High Static/Large Mtr Units factory shipped with standard static sheave and drive at 2.5 turns open (2600 cfm @ 0.4 in. ESP). Other speeds require field selection. ISO/AHRI rating point with standard static sheave and drive at 1.5 turns open (2600 cfm @ 0.5 in. ESP). Other speeds require field selection. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions. Do not operate in gray region. "na" = information not available at time of printing. All airflow is rated at lowest Voltage if unit is dual Voltage rated, i.e. 208V for 208-230V units. 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, and 400 fpm by 0.12in. wg.

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5

External Static Pressure (in. w.g.)

C E

07/25/07

ENVISION 7-25 TONS INSTALLATION MANUAL

NLH095 - Blower Performance Data

Belt Drive

Airflow in CFM with dry coil and clean air filter.

Rated CFM

MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 4.0 4.0 4.0 4.0 5.0 BHP 0.44 0.47 0.52 0.57 0.66 0.78 0.79 0.80 0.92 0.97 1.08 1.18 1.37 1.56

2600

RPM 584 625 667 708 757 806 831 856 905 960 1021 1082 1142 1202 TURNS OPEN 5.0 4.0 3.0 2.0 4.0 3.0 2.5 2.0 1.0 3.0 2.0 1.0 0.0 3.0 MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 4.0 4.0 4.0 4.0 5.0 5.0 BHP 0.51 0.56 0.61 0.67 0.77 0.89 0.90 0.91 1.06 1.11 1.14 1.38 1.44 1.59 1.73

2800

RPM 583 625 665 707 756 804 829 854 902 933 982 1055 1100 1156 1212 TURNS OPEN 5.0 4.0 3.0 2.0 4.0 3.0 2.5 2.0 1.0 3.5 2.5 1.5 0.5 3.5 2.5 MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 4.0 4.0 4.0 4.0 4.0 5.0 5.0 BHP 0.57 0.64 0.70 0.76 0.87 1.00 1.01 1.03 1.19 1.25 1.28 1.33 1.59 1.64 1.68 1.91

3000

RPM 582 624 665 705 754 802 827 852 900 930 955 1005 1078 1110 1169 1228 TURNS OPEN 5.0 4.0 3.0 2.0 4.0 3.0 2.5 2.0 1.0 3.5 3.0 2.0 0.5 0.0 3.0 2.0 MTR/SHEAVE 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 BHP 0.70 0.78 0.86 0.97 1.11 1.13 1.15 1.31 1.31 1.38 1.44 1.61 1.69 1.80 2.02

3200

RPM 623 664 704 753 801 826 851 899 919 949 978 1036 1086 1137 1196 TURNS OPEN 4.0 3.0 2.0 4.0 3.0 2.5 2.0 1.0 4.0 3.5 3.0 2.5 1.5 3.5 2.5 MTR/SHEAVE 2.0 2.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 BHP 0.85 0.94 1.07 1.21 1.24 1.26 1.42 1.43 1.50 1.57 1.65 1.71 1.76 2.10 2.35

3400

RPM 663 703 752 800 825 849 896 917 947 976 1020 1057 1094 1164 1223 TURNS OPEN 3.0 2.0 4.0 3.0 2.5 2.0 1.0 4.0 3.5 3.0 2.5 1.8 1.0 3.0 2.0 MTR/SHEAVE 2.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 BHP 1.01 1.16 1.31 1.34 1.37 1.54 1.55 1.63 1.70 1.78 1.87 2.06 2.15 2.40

3600

RPM 702 751 798 823 848 894 915 945 974 1003 1031 1088 1133 1191 TURNS OPEN 2.0 4.0 3.0 2.5 2.0 1.0 4.0 3.5 3.0 MTR/SHEAVE 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 BHP 1.23 1.40 1.44 1.48 1.66 1.67 1.75 1.83 1.91 2.00 2.10 2.19 2.44

3800

RPM 750 797 821 845 893 913 942 971 1000 1029 1086 1102 1160 TURNS OPEN 4.0 3.0 2.5 2.0 1.0 4.0 3.5 3.0 2.5 2.0 1.5 4.0 3.0

Bold Face Requires Larger 2 HP Motor

A=Std Static/Std Mtr;B=Low Static/Std. Mtr;C=High Static/Std. Mtr;D=Std Static/Large Mtr;E=High Static/Large Mtr Units factory shipped with standard static sheave and drive at 2 turns open (3200 cfm @ 0.6 in. ESP). Other speeds require field selection. ISO/AHRI rating point with standard static sheave and drive at 2 turns open (3200 cfm @ 0.6 in. ESP). Other speeds require field selection. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions. Do not operate in gray region. "na" = information not available at time of printing. All airflow is rated at lowest Voltage if unit is dual Voltage rated, i.e. 208V for 208-230V units. 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, and 400 fpm by 0.12in. wg.

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.2 1.4 1.6 1.8 2.0

External Static Pressure (in. w.g.)

2.5 2.0 1.5 3.5 2.5

07/25/07

ENVISION 7-25 TONS INSTALLATION MANUAL

NLH120 - Blower Performance Data

Belt Drive

Airflow in CFM with dry coil and clean air filter.

Rated CFM

MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 BHP 0.80 0.88 0.96 1.07 1.09 1.11 1.13 1.28 1.36 1.48 1.67 1.86

3000

RPM 707 748 789 830 857 882 907 931 956 1032 1115 1198 TURNS OPEN 5.0 4.0 3.0 2.0 5.0 4.5 4.0 3.5 2.5 1.0 4.5 3.5 MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 BHP 0.90 0.99 1.09 1.16 1.22 1.25 1.27 1.34 1.49 1.63 1.77 1.98 2.08

3200

RPM 707 747 788 830 855 880 905 930 955 1031 1107 1166 1210 TURNS OPEN 5.0 4.0 3.0 2.0 5.0 4.5 4.0 3.5 2.5 1.0 4.0 3.0 2.5 MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 BHP 0.99 1.09 1.20 1.19 1.35 1.38 1.41 1.44 1.47 1.55 1.76 2.06 2.15 2.24

3400

RPM 706 747 787 829 854 879 904 929 954 1004 1070 1137 1180 1224 TURNS OPEN 5.0 4.0 3.0 2.0 5.0 4.5 4.0 3.5 3.0 2.0 4.5 3.5 2.5 2.0 MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 BHP 1.05 1.18 1.30 1.32 1.47 1.51 1.54 1.58 1.61 1.85 1.90 2.12 2.22 2.32 2.51

3600

RPM 706 746 787 828 853 878 903 928 953 1001 1044 1103 1134 1184 1233 TURNS OPEN 5.0 4.0 3.0 2.0 5.0 4.5 4.0 3.5 3.0 2.0 5.0 4.0 3.5 2.5 1.5 MTR/SHEAVE 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 BHP 1.11 1.25 1.39 1.53 1.59 1.63 1.67 1.71 1.75 1.99 2.08 2.16 2.27 2.37 2.64 2.75

3800

RPM 705 756 786 827 853 878 902 927 951 999 1037 1075 1118 1161 1219 1255

TURNS OPEN 5.0 4.0 3.0 2.0 5.0 4.5 4.0 3.5 3.0 2.0 1.0 4.5 3.5 3.0 2.0 1.5 MTR/SHEAVE 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0 3.0 3.0 BHP 1.31 1.46 1.61 1.68 1.74 1.79 1.84 1.89 2.13 2.17 2.20 2.43 2.68 2.76 2.84 2.94

4000

RPM 745 786 826 852 877 901 926 950 998 1023 1047 1100 1157 1188 1231 1275 TURNS OPEN 4.0 3.0 2.0 5.0 4.5 4.0 3.5 3.0 2.0 1.0 5.0 4.0 3.0 2.5 1.5 1.0 MTR/SHEAVE 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 3.0 3.0 3.0 3.0

BHP 1.52 1.69 1.85 1.88 1.90 1.96 2.02 2.26 2.30 2.34 2.57 2.84 2.91 2.97 3.28

4200

RPM 785 825 851 876 900 925 949 997 1018 1039 1098 1155 1184 1214 1270 TURNS OPEN 3.0 2.0 5.0 4.5 4.0 3.5 3.0 2.0 1.0 5.0 4.5 3.5 2.5 2.0 1.0

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.2 1.4 1.6 1.8 2.0

External Static Pressure (in. w.g.)

3.0 3.0

07/23/07

A=Std Static/Std Mtr;B=Low Static/Std. Mtr;C=High Static/Std. Mtr;D=Std Static/Large Mtr;E=High Static/Large Mtr Units factory shipped with standard static sheave and drive at 3.0 turns open (3600 cfm @ 0.9 in. ESP). Other speeds require field selection. ISO/AHRI rating point with standard static sheave and drive at 2.0 turns open (3600 cfm @ 1.0 in. ESP). Other speeds require field selection. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions. Do not operate in gray region. "na" = information not available at time of printing. All airflow is rated at lowest Voltage if unit is dual Voltage rated, i.e. 208V for 208-230V units. 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, and 400 fpm by 0.12in. wg.

ENVISION 7-25 TONS INSTALLATION MANUAL

Wiring Schematic - FX10 Control

208-230/60/3

Note 1

24VAC

24V COM

Comp 1

Rev Valve

Fan

Alarm

Acc 2

Acc 1

Comp 2

Setpoint Shift

AI Com

Room Sens or

Sensor Com

Temp Oc c

Brown (13 )

AIC

Black (6 0 )

PB2

Yellow (18)

Viol et (1 5)

Black (61)

NOTE 4

NOTE 3

Unit Power Supply 480/60/3 or 575/60/3

Viol et (5 9)

NOTE 2

Blue (58 )

FP1

FP2

Orange (35)

Org /Wht (36)

LP2

LP1

L3L1 L2

Brown (24 )

Brown (25)

White (26)

White/Blue (27)

Black (2 8 )

Black/Red (29)

Gray (30 )

Gry/Wht (31)

Blue/Wht (33)

Pink (5 )

Viol et (1 ) Green (45) Orange (46)

Blue (47)

Yellow (48)

Viol et (5 0)

Blk/ W ht (5 5) Orange (56)

Black (49 )

Red (51)

Gray (52) Blue (53)

Pink (5 4)

11K

Red (69)

Yellow ( 70)

Black (71)

23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38

39 40 41

J10

42 43 44 45 46 47 48

49 50 51 52 53 54 55 56

Compressor 1

5VDC

AI3 +

AI5 +

AI4 +

AI6 +

AI2 +

5VDC

AI1 +

LED 5VDC

PWM2 PWM2 Com PWM1

24VAC Com DI12 DI11 DI10 DI9 DI8 DI7

DI 3/4/5/6/ Com DI6 DI5 DI4 DI3 DI2 9VDC DI1

Compresso r 2

Viol et (1 5)

D09

D08

D07

D06

D05 D04

D03

D02

D01

Yellow

CC2

Brown (13)

T1T3

Black (44 )

BlackRed

Yellow ( 63) Brown (64) Gray (65)

Red (43)

20 19

Yellow

(172)

18 17 16 15

Yellow (126)

14 13 12

Yellow (912)

11 10

Orange (10) 9 8 7

Gray (7)

Black/Wh i te (6 )

Pink (5 )

White/Red (4)

White (3)

Black (2 )

T1T3

BlackRed

Yello w

CC1

A21A12

A23

Yellow (40)

24VAC

24VAC Com

GROUND

A14

A13

A34

A24

A25

A22

A11

A33

A35

A32

A31

A15

Red (66)

Yellow (67)

Black (6 8 )

Blk/ W ht (4 1)

Yellow ( 18)

Johnson FX-10

Violet (1)

Pink (5)

Green

Yellow (78)

Yellow (20)

RV1

HP2

HP1

Org (37)

Org (38)

Belt Drive

Blower

Motor

Brown (79)

L2 L1L3

Grn/Y e l ( 62)

Orange (32)

RV2

Gray/Wht (39)

CC2

Blk /W ht (3 4)

CC1

Gray (80)

PB1

Blk/ W ht (2 2)

Black (21 )

RBT2 T1T3

Transformer Switch

Black

(75)

Yellow (57)

Blk/WhtGrn/Yel (42)

Blk /W ht (2 3)

Red

Black

208V

Blue

230V

Transformer

Yellow

Factory low voltage wiring Factory line voltage wiring Field low voltage wiring Field line voltage wiring Optional block

Internal junction Quick connect terminal Wire nut

Field wire lug Ground

Relay Contacts-

N.O., N.C.

Thermistor - Johnson Control

Relay coil

Legend

AP - Air Proving

Compressor contactor 1CC1 -

Switch - High pressure

Switch - Low pressure

Polarized connector

132

Condensate Overflow

CC2 - Compressor contactor 2

Condensate overflowCO CPM1 - Compressor Protection Module 1 CPM2 - Compressor Protection Module 2

Discharge Air TemperatureDA -

ES - Emergency Shutdown

Freeze protection sensor 1FP1 -

Freeze protection sensor 2FP2 -

Notes:

1 - R, C, Y1, Y2, O, and G are for use with a wall mounted thermostat 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

HP1 - Stage 1 High Pressure HP2 - Stage 2 High Pressure LP1 - Stage 1 Low Pressure LP2 - Stage 2 Low Pressure OS - Occupied Switch RB - Blower power relay RV1 - Reversing Valve coil 1 RV2 - Reversing Valve coil 2

97P699-01 5/17/06

Wiring Schematic - FX10 Control cont.

ENVISION 7-25 TONS INSTALLATION MANUAL

460/60/3 and 575/60/3

Unit Power Supply

480/60/3 or 575/60/3

L3L1 L2

Note 1

24VAC

24V COM

Comp 1

Rev Valve

Fan

Alarm

Acc 2

Acc 1

Comp 2

Setpoint Shif t

AI Com

Room Sens or

Sensor Com

Temp Oc c

Brown (13)

AIC

Black (60)

PB2

Yellow (18)

Violet (15)

Black (61)

NOTE 4

NOTE 3

Violet (59)

NOTE 2

Blue (58 )

FP1

FP2

Orange (35)

Org /Wht (36)

LP2

LP1

Brown (24)

Brown (25)

White (26)

White/Blue (27)

Black (28)

Black/Red (29)

Gray (30 )

Gry/Wht (31)

Blue/Wht (33)

Pink (5 ) Violet (1) Green (45) Orange (46)

Blue (47 )

Yellow (48)

Violet (50)

Blk/Wht (55) Orange (56)

Black (49)

Red (51)

Gray (52) Blue (53)

Pink (54)

11K

Red (69)

Yellow (70)

Black (71 )

23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38

39 40 41

J10

42 43 44 45 46 47 48

49 50 51 52 53 54 55 56

Compressor 1

5VDC

AI3 +

AI5 +

AI4 +

AI6 +

AI2 +

5VDC

AI1 +

A21A12

LED 5VDC

PWM2 PWM2 Com PWM1

24VAC Com DI12 DI11 DI10 DI9 DI8 DI7

DI 3/4/5/6/ Com DI6 DI5 DI4 DI3 DI2 9VDC DI1

Comp ressor 2

Violet (15)

D09

D08

D07

D06

D05 D04

D03

D02

D01

Yellow

Brown (13)

T1T3

BlackRed

CC2

Yellow (63)

Brown (64 )

Gray (65)

Red (43)

Black (4 4 )

20 19

Yellow

(172)

18 17 16 15

Yellow

(126)

14 13 12

Yellow

(912)

11 10

Orange (10) 9 8 7

Gray (7)

Black/White (6)

Pink (5 )

White/Red (4)

White (3)

Black (2)

Green

Yellow (78)

Yellow (20)

RV1

HP2

HP1

Org ( 3 7 )

Org ( 3 8 )

Belt Drive

Blower

Motor

Brown (79)

L2 L1L3

Grn/Yel (62)

Orange (32)

RV2

Gray/Wht ( 39)

CC2

Blk /W ht (3 4)

CC1

Gray (80)

PB1

Blk/Wht (22)

Black (21 )

RBT2 T1T3

Blue

Black

460 575

Transformer

Blk/Wht

Yellow (57)

Yellow

Blk /W ht (2 3)

T1T3

BlackRed

Yello w

CC1

Yellow (40)

Grn/ Yel (42)

24VAC

24VAC Com

GROUND

A14

A23

A13

A34

A24

A25

A22

A11

A33

A35

A32

A31

A15

Red (66)

Yellow (67)

Black (68)

Blk/Wht (41)

Yellow ( 18)

Johnson FX-10

Violet (1)

Pink (5)

Factory low voltage wiring Factory line voltage wiring Field low voltage wiring Field line voltage wiring Optional block

Internal junction Quick connect terminal Wire nut

Field wire lug Ground

Relay Contacts-

N.O., N.C.

Thermistor -Johnson Control

Relay coil

Legend

AP - Air Proving

Compressor contactor 1CC1 -

Switch - High pressure

Switch - Low pressure Polarized connector

132

Condensate Overflow

CC2 - Compressor contactor 2

Condensate overflowCO CPM1 - Compressor Protection Module 1 CPM2 - Compressor Protection Module 2

Discharge Air TemperatureDA -

ES - Emergency Shutdown

Freeze protection sensor 1FP1 -

Freeze protection sensor 2FP2 -

Notes:

1 - R, C, Y1, Y2, O, and G are for use with a wall mounted thermostat 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

97P699-02 5/17/06

ENVISION 7-25 TONS INSTALLATION MANUAL

Optional FX10 Microprocessor Control

FX10 Control Overview

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.

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.

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 output programmed to enable emergency heat in the event that the compressor is locked out. This output 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 humidity sensor and displayed over the network and 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.

The FX10 control has unused analog and digital inputs for field installed items such as air temperature, water temperature, 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.

Standard Features

• 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 DDC control add-on

DDC Operation and Connection

Other optional network protocol boards that can be added to the FX10 are:

• Johnson Control N2

• BACnet

• LonWorks

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.

Main FX 10 Board

Lockout Mode

Lockout mode can be activated by any of the following fault signals: refrigerant system high pressure, refrigerant system low pressure, heating 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

ENVISION 7-25 TONS INSTALLATION MANUAL

Optional FX10 Microprocessor Control cont.

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.

Freeze Detection (AI-5)

The freeze detection sensor will monitor the liquid refrigerant temperature entering the water coil in the heating mode. If the temperature drops below the freeze detection trip point for the recognition delay period, the condition will be recognized as a fault. The freeze detectopm 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 fault condition will be bypassed 2 minutes at normal compressor startup, to allow the refrigeration circuit to stabilize. If the freeze detection 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.

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.

Test Mode

Raising the zone temperature input (AI-1) reading to 180 – 220 degrees 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.

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.

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.

Compressor Fixed On Delay Time

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.

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 during compressor operation the compressor output (BO-2) will be disabled. The compressor will not restart until the compressor short cycle time delay has been satisfied.

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.

Compressor Minimum On Delay

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.

ENVISION 7-25 TONS INSTALLATION MANUAL

Optional FX10 Microprocessor Control cont

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.

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 PID 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. During low capacity compressor operation the ECM2.3 blower will operate in medium speed and will operate in high speed when the compressor is operating at full capacity.

Thermostat Control Mode

In thermostat mode the compressor will be cycled based on Y1 and Y2 calls from a room thermostat. When the control receives a Y1 command (BI-7) from the thermostat the low capacity compressor output (BO2) will be enabled and the ECM2.3 blower will operate in medium speed. When the control receives a Y2 command (BI-8) from the thermostat the full capacity compressor output will be enabled and the ECM2.3 blower will operate in high speed. During the heating cycle the reversing valve will be commanded into the off position.

Cooling Cycle

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.

setting and the highest selection set to ON will select the high-speed blower setting. If all selections are set to OFF the software shall select speed setting 10 for low-speed, 11 for medium-speed, and will select speed setting 12 for high speed. If only one selection is set to ON, that selection will set the low-speed blower setting, the medium-speed setting will be 11, and the high-speed setting will be speed

12. The maximum low-speed setting will be speed 10 and the minimum high-speed setting will be speed 3.

In addition there is a low limit setting in the software to prevent the ECM2.3 blower speed from being set below acceptable limits for each unit size.

Network Enabled Output/ Electric Heat Output (BO-5)

This output can be enabled by the BAS network for use as needed in the field. There is a soft switch in the application that can be enabled through the BAS or MUI that will allow this output to be used for auxiliary electric heat. A second soft switch is available that can be enabled through the BAS or MUI that will interlock this output with the blower proving input (BI-6) for operating electric heat. If the blower proving input is open when the interlock is enabled, the Electric Heat Output (BO-5) will be immediately disabled.

If this output is enabled for electric heat then it shall be used as a backup for the compressor in the event that a compressor fault occurs during heating operation.

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.

ECM2.3 Blower Operation

Blower speeds will be selected through the user interface or the facility management system. There will be a total of 12 speeds selectable with only three being selected at any one time. The lowest numbered speed selection set to ON will select the low-speed blower setting, the middle selection set to ON will select the medium-speed blower

ENVISION 7-25 TONS INSTALLATION MANUAL

Optional FX10 Microprocessor Control cont.

FX10 User Interface (MUI) Physical Layout

Power LED

LED 1

LED 4

Alarm LED - Indicates a Lock-Out or a bad Freeze Sensor Power LED - Shows FX processor is operational LED 1 - Flashing shows Compressor 1 running

Alarm LED

LED 8

Up Arrow Right Arrow

Escape (ESC) Button

Return Button

Left Arrow Down Arrow

LED 3 - On shows Fan running LED 4 - On shows Reversing Valve in cool LED 8 - Flashing shows unit in ‘Test’ Mode

LED 2 - Flashing shows Full Capacity Compressor running

MUI Menu Navigation for Single Compressor - Envision Water-to-Air

Welcome

Info Status Temps Outputs Settings Maint Alarms Alm-History

Info

WFI Envision Series PROFXENV-XX 3/8/07

Status

Run Mode Auto Eff Oc cup’y Occ Y1 Input OFF Y2 Input OFF G Input OFF O Input OFF Occ Input Occ Temp Occ Inp OFF Condensate NML Emg Input Run Lo Press ON Hi Press ON Rndm Tmr 0 BI-4 Input OFF

Temps

Zone Temp 77.2 ºF Dis Air Temp 51.0 ºF Eff Clg Setpt 70.0°F Eff Htg Setpt 66.0°F Water Coil 77.8°F Low WC Limit 30.0°F Humidity 56.7 %RH WarmCool AI 14.6 WarmCoolAdj 0.2

Outputs Settings

nvoFanStatus ON CmpCmd Status OFF Cmp Capacity OFF Rev Valve Heat X1 Output OFF X2 Output OFF PWMOut 98% BO5 OFF BO9 OFF AO2 Output 0%

Unit of Measure F Occ Clg Setpt 73.9 ºF Occ Htg Setpt 69.9 ºF Unocc Clg 84.0 ºF Unocc Htg 60.0 ºF DeHumSetpt 0% SensorSelect TAXXJ02

ENVISION 7-25 TONS INSTALLATION MANUAL

Optional FX10 Microprocessor Control cont.

MUI Menu Navigation for Single Compressor - Envision Water-to-Air

Alarms

ALARM SUMMARY

^/High Pressure

Maintenance

MinClgSetpt 60.0 ºF MaxHtgSetpt 89.9 ºF W Coil LoLim1 30.0 ºF W Coil LoLim2 15.0 ºF TmpOccTime 120 mi n Rev Vlv Default Heating BO5 Mode Network CompStrtDly 90 sec SpaceT Offset -1 ºF DehumEnaDis Dis Acc1 A ction On Comp Acc2 A ction On Fan

Alm-History

Alarm #Events Condensate 0 Hi Pressure 0 Low Pressure 0 Low Temp 0 Bad Sensor 0

Press right arrow key

one time from

Maintenance Menu

NOTE: This FX10 application im plements an alarm history which is reset only by cycling power. This history shows on the Alm-History page. Any alarm showing 4+ events has occurred more than 4 times.

Alarm lock-outs

Return keys simultaneously for a minimum of 15 seconds, or by commanding the nv iAlarmReset over the BAS network.

Test mode

for a minimum of 15 seconds and releasing. Test mode times out after 30 minutes, and may also be ended by pressing ‘ESC’ and Up Arrow simul taneously and releasing. Test Mode bypasses the On Delay (90 sec) and Random Start timers for quicker troubleshooting. It also allows cycling the reversing valve without compressor shutdown.

ECM

SW1 OFF SW2 OFF SW3 ON SW4 OFF SW5 OFF SW6 OFF SW7 ON SW8 OFF SW9 OFF SW10 ON SW11 OFF SW12 OFF

No more than three

speeds should be “ON”

at one time

are reset by cycling power, by pressi ng the “ESC” and

is enabl ed by holding the ‘Esc’ and Down Arrow simultaneously

ENVISION 7-25 TONS INSTALLATION MANUAL

Optional FX10 Microprocessor Control - N2

N2 Open

Point Type Point Address Long Name

ADF 1 nciSetpoints.Occupied_Co ADF 2 nciSetpoints.Standby_Coo ADF 3 nciSetpoints.Unoccupied_ ADF 4 nciSetpoints.Occupied_He ADF 5 nciSetpoints.Standby_Hea ADF 6 nciSetpoints.Unoccupi5#6 ADF 7 nciMinClgSetpt ADF 8 nciMaxHtgSetpt ADF 9 nvoSpaceTemp ADF 10 nvoDischAirTemp ADF 11 nvoEffClgSetpt ADF 12 nvoEffHtgSetpt ADF 13 nviSpaceTemp ADF 16 nciAux1Temp ADF 17 nciAux2Temp ADF 18 nvoUnitStatus.Heat_Outpu ADF 20 nvoUnitStatus.Cool_Outpu ADF 22 nvoUnitStatus.Fan_Output

BD 9 nvoUnitStatus.Mode

BD 10 nvoUnitStatus.In_Alarm ADF 23 nciPropBand ADF 26 nciRemoteSetptMin ADF 27 nciRemoteSetptMax ADF 28 nciTempOffset ADF 33 nviSetpoint ADF 40 nvoHtgFrzPro1Tmp ADF 41 nvoHtgFrzPro2Tmp

ADF 53 nvoAlarms ADF 54 nvoSrcLoopTmp ADF 55 nciSummerSetpt ADF 56 nciAuxTempOffset ADF 58 nvoHtgFrzSetpt

ADI 3 nciHours

BD 1 nvoEffectOccup

BD 2 nviOccManCmd

BD 4 nviEmergOverride

BD 5 nvoFanStatus

BD 6 nvoAccStatus

BD 7 nvoLP_WVStatus

BD 8 nvoAlarmStatus

BD 12 nviAlarmReset

BD 14 nviFanSpeedCmd.State

BD 15 nviComprEnable.State

BD 25 nviCompr2Enable.State

BD 16 nviValveEnable.State

BD 18 nvoComp1Status

BD 19 nvoRV1Status

BD 23 nviOccSchedule.Current_s

BD 26 nvoComp2Status

BD 27 nciLogic_19

BD 30 nciLogic_35

BD 31 nvoCompFanProv

BD 32 nviBO5

BD 34 nvoDirtyFilter

BD 35 nviBO9

BD 36 nvoBO9

Point Description

Occupied Cooling Setpoint Input (Read/Write) Standby Cooling Setpoint Input (Read/Write) Unoccupied Cooling Setpoint Input (Read/Write) Occupied Heating Setpoint Input (Read/Write) Standby Heating Setpoint Input (Read/Write) Unoccupied Heating Setpoint Input (Read/Write) Minimum Cooling Setpoint Input (Read/Write) Maximum Heating Setpoint Input (Read/Write) Space or Zone Temperature Value (Read Only) Discharge Air Temp Field Supplied Only (Read Only) Effective Cooling Setpoint Value (Read Only) Effective Heating Setpoint Value (Read Only) Space or Zone Temperature Value Override(Write) Heating Freeze Protection Temperature Setpoint Value (Read/Write) Heating Freeze Protection Temperature Setpoint Value (Read/Write) 1st Stage Compressor Heating Output (Read Only) 1st Stage Compressor Cooling Output (Read Only) Fan Output (Read Only) Unit Mode of Operation (Read Only) Unit Alarm mode (Read Only) Heating/Cooling Prop Band Input (Read/Write) Warm/Cool Adjust Min (Read/Write) Warm/Cool Adjust Max (Read/Write) Space or Zone Temperature Sensor Calibration Input (Read/Write) General Setpoint Input (Read/Write) Heating Freeze Protection Temperature 1 Value (Read Only) Heating Freeze Protection Temperature 2 Value (Read Only) Alarms Enumerated [0=no alarms, 1=condensate alarm, 2=Compressor Hi Discharge Pressure alarm, 3=Compressor low Suction Pressure alarm, 4=Freeze protection alarm, 8=Faulty Freeze Sensor alarm, 9=Loss of Charge] (Read Only) Main Loop Temp for Economizer Control (Read Only) Setpoint for Economizer (Read/Write) Economizer Temperature Sensor Calibration Input (Read/Write) Heating Freeze Protection Temperature Setpoint Value (Read Only) Compressor Stage Lead/Lag hour setting (Read/Write) Effective Occupancy State (Read Only) Occupancy Override Command Input (Read/Write) Emergency Override Input (Read/Write) Fan Output Status (Read Only) Accessory 2 Output Status (Read Only) Accessory 1 Output Status (Read Only) Alarm Output Status (Read Only) Alarm Reset Input (Read/Write) Network equivelant of a thermostatic 'G' call. (Write) Network equivelant of a thermostatic 'Y1' call. (Write) Network equivelant of a thermostatic 'Y2' call. (Write) Network equivelant of a thermostatic 'O' call. (Write) Compressor 1 Command Status (Read Only) Reversing Valve Output Status (Read Only) Occupancy Supervisory Scheduler Command Input (Read/Write) Compressor 2 Command Status (Read Only) Compressor Stage Lead/Lag Enable/Disable (Read/Write) Water Side Economizer Enable/Disable (Read/Write) Compressor/Fan Proving Switch Status (Read Only) Command for output BO5 used for Emg Heat-Interlocked with Fan DP9Read/Write) Value Output for BO5 used for Emg Heat (Read Only) Command for output BO9(Read/Write) Value output for BO9 (Read Only)

ENVISION 7-25 TONS INSTALLATION MANUAL

Optional FX10 Microprocessor Control - LonWorks

LonWorks

LonWorks Name SNVT Type

nciSetpoints SNVT_temp_setpt 106 SCPTsetPnts

nciMinClgSetpt SNVT_temp_p 105 4 Minimum Cooling Setpoint Input (Read/Write) nciMaxHtgSetpt SNVT_temp_p 105 3 Maximum Heating Setpoint Input (Read/Write) nvoSpaceTemp SNVT_temp_p 105 Space or Zone Temperature Value (Read Only) nvoDischAirTemp SNVT_temp_p 105 Discharge Air Temp Field Supplied Only (Read Only) nvoEffClgSetpt SNVT_temp_p 105 Effective Cooling Setpoint Value (Read Only) nvoEffHtgSetpt SNVT_temp_p 105 Effective Heating Setpoint Value (Read Only) nviSpaceTemp SNVT_temp_p 105 Space or Zone Temperature Value Override(Write) nciAux1Temp SNVT_temp_p 105 147 Heating Freeze Protection Temperature Setpoint Value (Read/Write) nciAux2Temp SNVT_temp_p 105 148 Heating Freeze Protection Temperature Setpoint Value (Read/Write)

nciPropBand SNVT_temp_diff_p 147 177 Heating/Cooling Prop Band Input (Read/Write) nciRemoteSetptMin SNVT_temp_diff_p 147 98 Warm/Cool Adjust Min (Read/Write) nciRemoteSetptMax SNVT_temp_diff_p 147 97 Warm/Cool Adjust Max (Read/Write) nciTempOffset SNVT_temp_diff_p 147 11 Space or Zone Temperature Sensor Calibration Input (Read/Write) nviSetpoint SNVT_temp_p 105 General Setpoint Input (Read/Write) nvoHtgFrzPro1Tmp SNVT_temp_p 105 Heating Freeze Protection Temperature 1 Value (Read Only) nvoHtgFrzPro2Tmp SNVT_temp_p 105 Heating Freeze Protection Temperature 2 Value (Read Only)

nvoAlarms SNVT_lev_cont 21 nvoSrcLoopTmp SNVT_temp_p 105 Main Loop Temp for Economizer Control (Read Only) nciSummerSetpt SNVT_temp_p 105 Setpoint for Economizer (Read/Write) nciAuxTempOffset SNVT_temp_diff_p 147 11 Economizer Temperature Sensor Calibration Input (Read/Write) nvoHtgFrzSetpt SNVT_temp_p 105 Heating Freeze Protection Temperature Setpoint Value (Read Only) nciHours SNVT_time_hour 22 Compressor Stage Lead/Lag hour setting (Read/Write) nvoEffectOccup SNVT_occupancy 109 Effective Occupancy State (Read Only) nviOccManCmd SNVT_occupancy 109 Occupancy Override Command Input (Read/Write) nviEmergOverride SNVT_hvac_emerg 103 Emergency Override Input (Read/Write) nvoFanStatus SNVT_lev_disc 22 Fan Output Status (Read Only) nvoAccStatus SNVT_lev_disc 22 Accessory 2 Output Status (Read Only) nvoLP_WVStatus SNVT_lev_disc 22 Accessory 1 Output Status (Read Only) nvoAlarmStatus SNVT_lev_disc 22 Alarm Output Status (Read Only) nviAlarmReset SNVT_lev_disc 22 Alarm Reset Input (Read/Write) nviFanSpeedCmd.State SNVT_switch 95 Network equivelant of a thermostatic 'G' call. (Write) nviComprEnable.State SNVT_switch 95 Network equivelant of a thermostatic 'Y1' call. (Write) nviCompr2Enable.State SNVT_switch 95 Network equivelant of a thermostatic 'Y2' call. (Write) nviValveEnable.State SNVT_switch 95 Network equivelant of a thermostatic 'O' call. (Write) nvoComp1Status SNVT_lev_disc 22 Compressor 1 Command Status (Read Only) nvoRV1Status SNVT_lev_disc 22 Reversing Valve Output Status (Read Only) nviOccSchedule SNVT_tod_event 128 Occupancy Supervisory Scheduler Command Input (Read/Write) nvoComp2Status SNVT_lev_disc 22 Compressor 2 Command Status (Read Only) nciLogic_19 UNVT_logic 24 Compressor Stage Lead/Lag Enable/Disable (Read/Write) nciLogic_35 UNVT_logic 35 Water Side Economizer Enable/Disable (Read/Write) nvoCompFanProv SNVT_lev_disc 22 Compressor/Fan Proving Switch Status (Read Only) nviBO5 SNVT_lev_disc 22 Command for output BO5 used for Emg Heat-Interlocked with Fan DP9Read/Write) nvoDirtyFilter SNVT_lev_disc 22 Value Output for BO5 used for Emg Heat (Read Only) nviBO9 SNVT_lev_disc 22 Command for output BO9(Read/Write) nvoBO9 SNVT_lev_disc 22 Value output for BO9 (Read Only)

SNVT Index

112SNVT_hvac_typenvoUnitStatus

SCPT

Reference

SCPT

UCPT

Index

Standby Cooling Setpoint Input (Read/Write)

Occupied Cooling Setpoint Input (Read/Write)

Unoccupied Cooling Setpoint Input (Read/Write) Occupied Heating Setpoint Input (Read/Write) Standby Heating Setpoint Input (Read/Write) Unoccupied Heating Setpoint Input (Read/Write)

1st Stage Compressor Heating Output (Read Only) 1st Stage Compressor Cooling Output (Read Only) Fan Output (Read Only) Unit Mode of Operation (Read Only) Unit Alarm mode (Read Only)

Alarms Enumerated [0=no alarms, 1=condensate alarm, 2=Compressor Hi Discharge Pressure alarm, 3=Compressor low Suction Pressure alarm, 4=Freeze protection alarm, 8=Faulty Freeze Sensor alarm, 9=Loss of Charge] (Read Only)

Point Description

ENVISION 7-25 TONS INSTALLATION MANUAL

Optional FX10 Microprocessor Control - BACnet

Object Identifier Property

Object Type Type Enumeration Instance Name Enumeration

Analog Value 2 1 Present_Value 85 WFI##########.Occupied Cool.Present_Value Occupied Cooling Setpoint Input (Read/Write)

Analog Value 2 3 Present_Value 85 WFI##########.Unoccupied Cool.Present_Value Unoccupied Cooling Setpoint Input (Read/Write) Analog Value 2 2 Present_Value 85 WFI##########.Occupied Heat.Present_Value Occupied Heating Setpoint Input (Read/Write)

Analog Value 2 4 Present_Value 85 WFI##########.Unoccupied Heat.Present_Value Unoccupied Heating Setpoint Input (Read/Write) Analog Value 2 7 Present_Value 85 Analog Value 2 6 Present_Value 85 Analog Input 0 1 Present_Value 85 WFI##########.Space Temp.Present_Value Analog Input 0 2 Present_Value 85 WFI##########.Discharge Air Temp.Present_Value Discharge Air Temp Field Supplied Only (Read Only) Analog Input 0 5 Present_Value 85 WFI##########.Effective Clg Setpt.Present_Value Effective Cooling Setpoint Value (Read Only) Analog Input 0 6 Present_Value 85 WFI##########.Effective Htg Setpt.Present_Value Effective Heating Setpoint Value (Read Only) Analog Output 1 2 Present_Value 85 WFI##########.Space temp Ovrd.Present_Value

Multistate Input 13 2 Present_Value 85 WFI##########.Mode.Present_Value Unit Mode of Operation (Read Only)

Analog Value 2 9 Present_Value 85 WFI##########.Remote Setpt Min.Present_Value Warm/Cool Adjust Min (Read/Write) Analog Value 2 8 Present_Value 85 WFI##########.Remote Setpt Max.Present_Value Warm/Cool Adjust Max (Read/Write) Analog Value 2 10 Present_Value 85 WFI##########.Zone Temp Offset.Present_Value Space or Zone Temperature Sensor Calibration Input (Read/Write) Analog Output 1 1 Present_Value 85 WFI##########.Common Setpoint.Present_Value General Setpoint Input (Read/Write) Analog Input 0 3 Present_Value 85 WFI##########.Freez Temp 1.Present_Value Heating Freeze Protection Temperature 1 Value (Read Only) Analog Input 0 3 Present_Value 85 WFI##########.Freez Temp 2.Present_Value Heating Freeze Protection Temperature 2 Value (Read Only)

Analog Input 0 8 Present_Value 85 WFI##########.nvoAlarms.Present_Value Analog Input 0 9 Present_Value 85 WFI##########.Economizer Temp.Present_Value Main Loop Temp for Economizer Control (Read Only) Analog Input 2 5 Present_Value 85 WFI##########.Economizer Setpt.Present_Value Setpoint for Economizer (Read/Write) Analog Value 2 11 Present_Value 85 WFI##########.EconomizerTempOffset.Present_Value Economizer Temperature Sensor Calibration Input (Read/Write) Analog Input 0 7 Present_Value 85 WFI##########.Freez Temp Limit.Present_Value Heating Freeze Protection Temperature Setpoint Value (Read Only)

Multistate Input 13 1 Present_Value 85 WFI##########.Effective Occupancy.Present_Value Effective Occupancy State (Read Only) Multistate Output 14 1 Present_Value 85 WFI##########.Occupancy Command.Present_Value Occupancy Override Command Input (Read/Write) Multistate Output 14 6 Present_Value 85 WFI##########.Emergency Override.Present_Value Emergency Override Input (Read/Write) Binary Input 3 1 Present_Value 85 WFI##########.Fan Cmd Status.Present_Value Fan Output Status (Read Only)

Multistate Output 14 7 Present_Value 85 WFI##########.Alarm Reset.Present_Value Alarm Reset Input (Read/Write) Multistate Output 14 2 Present_Value 85 WFI##########.Fan Command (G).Present_Value Network equivelant of a thermostatic 'G' call. (Write) Multistate Output 14 3 Present_Value 85 WFI##########.Comp1 Command (Y1).Present_Value Network equivelant of a thermostatic 'Y1' call. (Write) Multistate Output 14 4 Present_Value 85 WFI##########.Comp2 Command (Y2).Present_Value Network equivelant of a thermostatic 'Y2' call. (Write) Multistate Output 14 5 Present_Value 85 WFI##########.Rev Vlv Cmd (O).Present_Value Network equivelant of a thermostatic 'O' call. (Write) Binary Input 3 2 Present_Value 85 WFI##########.Comp1 Cmd Status.Present_Value Compressor 1 Command Status (Read Only) Binary Input 3 4 Present_Value 85 WFI##########.Reversing Valve.Present_Value Reversing Valve Output Status (Read Only)

Binary Input 3 3 Present_Value 85 WFI##########.Comp2 Cmd Status.Present_Value Compressor 2 Command Status (Read Only)

Multistate Value 19 1 Present_Value 85 WFI##########.Economizer Ena/Dis.Present_Value Water Side Economizer Enable/Disable (Read/Write) Multistate Input 13 3 Present_Value 85 WFI##########.Compressor/Fan Prove.Present_Value Compressor/Fan Proving Switch Status (Read Only) Multistate Output 14 8 Present_Value 85 WFI##########.Emergency Heat BO5.Present_Value Command for output BO5 used for Emg Heat-Interlocked with Fan DP9Read/Write) Binary Input 3 5 Present_Value 85 WFI##########.BO5 ElecHeat.Present_Value Value Output for BO5 used for Emg Heat (Read Only) Multistate Output 14 9 Present_Value 85 WFI##########.BO9.Present_Value Command for output BO9(Read/Write) Binary Input 3 9 Present_Value 85 WFI##########.BO9 Output.Present_Value Value output for BO9 (Read Only)

BACnet

Full Reference

WFI##########.Min Clg Setpt.Present_Value WFI##########.Max Htg Setpt.Present_Value

Point Description

Standby Cooling Setpoint Input (Read/Write)

Standby Heating Setpoint Input (Read/Write)

Minimum Cooling Setpoint Input (Read/Write) Maximum Heating Setpoint Input (Read/Write) Space or Zone Temperature Value (Read Only)

Space or Zone Temperature Value Override(Write) Heating Freeze Protection Temperature Setpoint Value (Read/Write) Heating Freeze Protection Temperature Setpoint Value (Read/Write) 1st Stage Compressor Heating Output (Read Only) 1st Stage Compressor Cooling Output (Read Only) Fan Output (Read Only)

Unit Alarm mode (Read Only) Heating/Cooling Prop Band Input (Read/Write)

Compressor Stage Lead/Lag hour setting (Read/Write)

Accessory 2 Output Status (Read Only) Accessory 1 Output Status (Read Only) Alarm Output Status (Read Only)

Occupancy Supervisory Scheduler Command Input (Read/Write)

Compressor Stage Lead/Lag Enable/Disable (Read/Write)

ENVISION 7-25 TONS INSTALLATION MANUAL

Optional FX10 Microprocessor Control - BACnet Variables

The network variables will be listed by point type:instance convention. 2:1 would mean point type 2, point instance 1. All volatile points will revert to the uncommanded values after a power interruption.

Analog Input (Type 0)

0:1 Space Temp

[Read, shows the sensor value connected to terminals RS and AIC on the terminal board]

0:2 Disch Air Temp

[Read, shows sensor value connected to AI4 on the FX10]

0:3 Freez Temp 1

[Read, shows the water coil heat exchanger temperature For circuit 1.]

0:4 Freez Temp 2

[Read, shows the water coil heat exchanger temperature For circuit2.]

0:5 Active Clg Setpt

[Read, shows the active cooling setpoint value]

0:6 Active Htg Setpt

[Read, shows the active heating setpoint value]

0:7 Freez Temp Limit

[Read, shows the low temperature limit of the water coil heat exchanger.]

0:8 nvoAlarms

[Read, shows the current alarm status of the heat pump, 0=No alarms, 1=Condensate detected, 2=Compressor 1 Hi Discharge Pressure, 3=Compressor 1 Low Suction Pressure, 4=Circuit 1 Low Temp Limit on Coax, 5= Compressor 2 Hi Discharge Pressure, 6= Compressor 1 Low Suction Pressure, 7= Circuit 1 Low Temp Limit on Coax, 8=Circuit 1 Bad Refrigerant Temp Sensor, 9= Circuit 2 Bad Refrigerant Temp Sensor]

0:9 Economizer Temp

[Read, Shows the source water temperature for Economizer operation.(effective on units released after 8/11/07]

Analog Output (Type 1)

1:1 Common Setpoint

[Write, Adjust the midpoint value between Active Clg Setpt and Active Htg Setpt, raises and lowers both from a single command.]

1:2 Space Temp Ovrd

[Write, Override the space temperature.]

Analog Value (Type 2)

2:1 Occupied Cool

[Read/Write, Occupied cooling setpoint, nonvolatile]

2:3 Occupied Heat

[Read/Write, Occupied heating setpoint, nonvolatile]

2:2 Unoccupied Cool

[Read/Write, Unoccupied cooling setpoint, nonvolatile]

2:4 Unoccupied Heat

[Read/Write, Unoccupied heating setpoint, nonvolatile] Shutdown with antifreeze, nonvolatile.]

2:5 Economizer Setpt

[Read/Write, adjust the temperature threshold for economizer operation.]

2:6 Max Htg Setpt

[Read/Write, The upper limit that the heating setpoint may be adjusted to.]

2:7 Min Clg Setpt

[Read/Write, The lower limit that the cooling setpoint may be adjusted to.]

2:8 Remote Setpt Max

[Read/Write, Sets the upper value for the remote setpoint adjust. A 2 setting gives you + 2 degrees maximum.]

2:9 Remote Setpt Min

[Read/Write, Sets the lower value for the remote setpoint adjust. A 2 setting gives you - 2 degrees maximum.]

2:10 Zone Temp Offset

[Read/Write, This value is added to the sensor value for For zone temp, and the sum is shown on the Space Temp Variable. This is used for calibrating the Space Temperature, nonvolatile.]

2:11 Economizer TempOffset

[Read/Write, This value is used for calibrating the Economizer water temperature.]

Binary Input (Type 3)

3:1 Blower Cmd Status

[Read, shows the commanded status of the blower.]

3:2 Comp1 Cmd Status

[Read, shows the commanded status of compressor 1]

3:3 Comp2 Cmd Status

[Read, shows the commanded status of compressor 2]

3:4 Rev Valve Status

[Read, shows the reversing valve position, inactive = heating, active = cooling.]

3:5 BO-5 ElectHeat

[Read, shows command status of BO-5 for electric heat]

3:6 BO9 Spare

[Read, shows command status of BO-9]

ENVISION 7-25 TONS INSTALLATION MANUAL

Optional FX10 Microprocessor Control - BACnet Variables cont.

Multistate Input (Type 13)

13:1 Effective Occupancy

[Read, shows the occupancy status of the heat pump. 1=Occupied, 2=Unoccupied, 3=Bypass (temporary occupancy)]

13:2 Mode

[Read, shows heat pump as normal or emergency shutdown 1=Auto(normal), 7=Off(shutdown)]

13:3 Compressor/Blower Prove

[Read, shows the contact status of BI-4.]

Multistate Output (Type 14)

14:1 Occupancy Command

[Read/Write, controls the occupancy mode of the heat Pump. 1=Occupied, 2=Unoccupied, 3=Bypass (Temporary Occupancy), 4=Standby, 255=Uncommanded]

14:2 Blower Command (G)

[Read/Write, network command to run the blower]

14:3 Comp1 Command (Y1)

[Read/Write, network Y1 command (compressor 1 call).]

14:4 Comp2 Command (Y2)

[Read/Write, network Y2 command (compressor 2 call).]

14:5 Rev Vlv Cmd (O)

[Read/Write, network O command. 1= heating, 2= cooling.]

14:6 Emergency Override

[Read/Write, provide means of emergency shutdown]

14:7 Alarm Reset

[Read/Write, allows remote reset of manual reset alarms, Command to a ‘2’ value for reset action, 1 for normal Operation.]

14:8 BO5 ElectHeat

[Read/Write, network command to enable electric heat (interlocked with BI4)]

14:9 BO9 Spare

[Read/Write, network command to enable/disable BO9]

ENVISION 7-25 TONS INSTALLATION MANUAL

Blower Drive Sheaves

Blower Sheave Adjustment

Follow the procedures listed below if airflow of heat pump is to be changed from factory setting. (Refer to Figure 10.)

1. Loosen the blower motor fastening nuts from the motor mount.

2. Turn the adjusting bolts until the tension is off the drive belt.

3. Remove belt from sheave and loosen allen heat set screw “B”.

4. Adjust sheave pitch diameter for desired speed by opening or closing moveable portion in or out in 1/2-turn increments. Do not open more than 5 full turns.

5. Sheave should be mounted with set screw “A” toward the motor. Be sure driven and drive sheaves are in alignment and parallel.

6. Retighten set screw “B” and replace drive belt on sheaves.

7. Turn motor mount adjusting bolts until belt has approximately 1/2-inch of deflection midway between sheaves (4 lbs. tension if measured with gauge, see Figure 11).

8. Retighten motor mounting nuts. Belt tension of a new belt will drop rapidly during the first few hours of operation.

9. Check and readjust as needed.

Figure 10: Blower Motor Sheave Adjustments and Settings

Moveable

Keyway

Set Screw “A”

Portion

Set Screw “B”

Figure 11: Checking Drive Belt Tension

Deflection

Driven Sheave

Drive Sheave

ENVISION 7-25 TONS INSTALLATION MANUAL

Unit Startup

Before powering the unit, check the following:

• High voltage is correct and matches nameplate

• Fuses, breakers and wire size are correct

• Low voltage wiring is complete

• Piping has been completed and water system cleaned and flushed

• Air is purged from closed loop system

• Isolation valves are open and water control valves or loop pumps wired

• Condensate line is open and correctly pitched

• Transformer has been switched to lower voltage tap if needed

• Blower rotates freely

• Blower speed is correct

• Air filter is clean and in position

• Service/access panels are in place

• Return air temperature is between 60°F-80°F in heating and 70°F-95°F in cooling

• Air coil has been cleaned

Startup Steps

1. Initiate a control signal to energize the blower motor. Check blower operation.

2. Initiate a control signal to place the unit in the cooling mode. Cooling set point must be set below room temperature.

3. First stage cooling will energize after a time delay. Check for correct rotation of scroll compressors in 120, 080, 095 units. Incorrect rotation will cause unusual noise and low refrigerant pressures. Switch any two power leads at the compressor or contractor to reverse rotation.

4. Be sure the compressor and water control valve or loop pumps are activated.

5. Initiate a control signal to energize second stage cooling.

6. Second stage cooling will energize after a time delay. Check for correct rotation as indicated in step 3.

7. Verify that the water flow rate is correct by measuring pressure drop through the heat exchanger using the P/T plugs and comparing to Water Pressure Drop Table on page 24.

8. Check the temperature of both the supply and discharge water. Refer to Unit Operating Pressures and Temperatures

9. Check for an air temperature drop of 15° to 25°F across the air coil, depending on blower speed and entering water temperature.

10. Adjust the cooling setpoint above the room temperature and verify that the compressor and water valve or pumps deactivate.

11. Initiate a control signal to place the unit in the heating mode. Heating setpoint must be set above room temperature.

12. First stage heating will energize after a time delay.

13. Initiate a control signal to energize second stage heating.

14. Second stage heating will energize after a time delay.

15. Check the temperature of both the supply and discharge water. Refer to Unit Operating Pressures and Temperatures.

16. Check for an air temperature rise of 20°F to 25°F across the air coil, depending on the blower speed and entering water temperature.

17. Adjust the heating setpoint below room temperature and verify that the compressor and water valve or loop pumps deactivate.

18. During all testing, check for excessive vibration, noise or water leaks.

19. Set system to desired normal operating mode and set temperature to maintain desired comfort level.

20. Instruct the owner/operator in the proper operation of the thermostat and system maintenance.

21. Check belt tension and readjust as necessary after first few hours.

ENVISION 7-25 TONS INSTALLATION MANUAL

Operating Parameters

Entering

Water Temp

°F

Entering

Water Temp

°F

Note: Cooling performance based on entering air temperatures of 80º F DB, 67º F WB.

Heating performance based on entering air temperature of 70º F DB.

Water Flow

GPM/Ton

Suction

Pressure

PSIG

Discharge

Pressure

PSIG

080-300

Superheat

080-300

Subcooling

1.5 110-130 160-190 10-17 13-17 17-22 20-30

3.0 110-130 160-190 20-30 11-15 8-12 20-30

1.5 120-140 260-300 9-13 15-19 17-22 20-30

3.0 120-140 260-300 9-13 11-15 8-12 20-30

1.5 130-150 340-380 8-12 15-19 15-19 15-25

3.0 130-150 340-380 8-12 11-15 7-11 15-25

Heating

Water Flow

GPM/Ton

Suction

Pressure

PSIG

Discharge

Pressure

PSIG

080-300

Superheat

080-300

Subcooling

1.5 - - - - - -

3.0 60-80 280-310 10-14 5-12 4-8 20-30

1.5 80-110 300-330 8-12 5-12 6-12 20-30

3.0 80-110 300-330 8-12 5-12 6-12 20-30

1.5 110-140 330-360 8-12 1-8 10-15 30-40

3.0 110-140 330-360 8-12 1-8 10-15 30-40

Cooling

Water Temp

Rise °F

Water Temp

Drop °F

Air Temp

Drop °F DB

Air Temp

Rise °F DB

7/25/07

Pressure Drop

Model GPM

080

095

120

160

180

240

300

30°F 50°F 70°F 90°F 110°F

10.0

16.0

22.0

12.0 2.22 2.00

18.0 4.62 4.02

24.0 7.31 6.81

16.0

22.0

28.0

20.0

28.0

35.0

22.0

34.0

45.0

30.0

45.0

60.0

35.0

56.0

75.0

2.48

5.96

10.91

2.03

3.69

5.58

1.20

2.64

3.72

1.50 1.50 1.50 1.50 1.50

3.95 3.90 3.85 3.80 3.75

6.40 6.10 6.00 5.80 5.70

0.90 0.82 0.75 0.69 0.63

2.22 2.06 1.91 1.77 1.64

3.47 3.29 3.06 2.88 2.40

1.84 1.60 1.39 1.21 1.05

4.09 3.88 3.69 3.51 3.33

6.10 5.95 5.77 5.45 5.10

Pressure Drop (psi)

2.29

2.36

5.62

10.38

1.93

3.58

5.50

1.19

2.50

3.65

5.22

9.73

1.92

3.80

5.80

1.88

3.40

5.32

1.18

2.37

3.41

2.21

4.89

9.12

1.83

3.75

5.60

1.80

3.19

5.00

1.17

2.24

3.36

2.14

4.69

8.50

1.67

3.65

5.19

1.50

2.99

4.84

1.16

2.12

3.21

DEALER: PHONE #: DATE: PROBLEM: MODEL #: SERIAL #:

COOLING CYCLE ANALYSIS

ENVISION 7-25 TONS INSTALLATION MANUAL

Startup/Troubleshooting Form

Unit Amp Draw:

°F

AIR

°F

Line Voltage:

COIL

COAX

LOAD

°F°F

PSI PSI

BRINE IN

Water to Water Application

BRINE OUT

Heat of Extraction/Rejection = GPM x 500 (485 for water/antifreeze) x ∆T

Note: DO NOT hook up pressure gauges unless there appears to be a performance problem.

HEATING CYCLE ANALYSIS

Unit Amp Draw:

°F

AIR

COIL

°F

Line Voltage:

EXPANSION

VALVE

LIQUID LINE

Loop: Open

SOURCE

°F

PSI PSI

BRINE IN

Loop: Open

Closed

COAX

BRINE OUT

Closed

PSI

°F

SAT °F=

SUCTION

COMPRESSOR

REVERSING

VALVE

Hot Water

Generator

°F°F

°F

DISCHARGE

PSI = SAT F

PSI

°F

SUCTION

Superheat Subcooling

SAT °F=

COAX

LOAD

°F°F

PSI PSI

BRINE IN

Water to Water Application

BRINE OUT

LIQUID LINE

EXPANSION

VALVE

PSI PSI

BRINE IN

COAX

SOURCE

BRINE OUT

COMPRESSOR

REVERSING

VALVE

Hot Water

Generator

°F°F

°F

DISCHARGE

PSI = SAT F

Superheat Subcooling

ENVISION 7-25 TONS INSTALLATION MANUAL

Preventive Maintenance

Water Coil Maintenance

1. Keep all air out of the water. An open loop system should be checked to ensure that the well head is not allowing air to infiltrate the water line. Lines should always be airtight.

2. Keep the system under pressure at all times. It is recommended in open loop systems that the water control valve be placed in the discharge line to prevent loss of pressure during off cycles. Closed loop systems must have positive static pressure or air vents may draw air into the system.

NOTES: If the installation is performed in an area with a known high mineral content (125 P.P.M. or greater) in the water, it is best to establish with the owner a periodic maintenance schedule so the coil can be checked regularly. Should periodic coil cleaning be necessary, use standard coil cleaning procedures which are compatible with either the cupronickel or copper water lines. Generally, the more water flowing through the unit, the less chance for scaling.

Other Maintenance

Filters

Filters must be clean to obtain maximum performance. They should be inspected every two to three months under normal operating conditions and be replaced when necessary. Units should never be operated without a filter.

Condensate Drain

In areas where airborne bacteria produce a residual buildup in the drain pan, it may be necessary to chemically treat the pan to minimize the problem. The condensate drain can pick up lint and dirt, especially with dirty filters. Inspect twice a year to avoid the possibility of overflow.

Air Coil

The air coil must be clean to obtain maximum performance. Check once a year under normal operating conditions and brush, vacuum or chemically clean the air coil if necessary. Care must be taken not to damage or disturb the aluminum fins while cleaning.

CAUTION: Fin edges are sharp.

Drive Belts

Check periodically for proper tension.

Replacement Procedures

Obtaining Parts

Contact your distributor for service or replacement parts required.

In-warranty Material Return

Material may not be returned except by permission of authorized service personnel. Contact your local distributor for warranty return authorization and assistance.

Revision Guide:

Pages: Description: Date: By:

Revision table added 10 Nov 2014 MA

4 Updated Nomenclature 10 Nov 2014 MA

Manufactured by WaterFurnace International, Inc. 9000 Conservation Way Fort Wayne, IN 46809 www.waterfurnace.com

Product: Envision Commercial Series Type: Geothermal/Water Source Heat Pump Size: 7-25 Tons

IM1021ANA 01/15

reserves the right to change design and speciﬁ cations without notice.

Document: Installation Manual

WaterFurnace Envision User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Model Nomenclature

General Installation Information

Vertical Dimensions

Horizontal Dimensions

Water Quality

System Cleaning and Flushing

Electrical Connections

Electrical Data

Operating Parameters

Pressure Drop

Replacement Procedures