Johnson Controls VB30, VB24, VB36, VM09, VM12 Installation, Operation And Maintenance Manual

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INDOOR PACKAGED EQUIPMENT

Installation, Operation, and Maintenance Supersedes: 145.18-IOM1 (115) Form 145.18-IOM1 (818)

HIGH EFFICIENCY VSCS SERIES

VERTICAL STACKED WATER SOURCE HEAT PUMP

LD27626

CABINET MODEL VB/VM/VS09–36

AND

CHASSIS MODEL VSCS09–36

R-410A

ISSUE DATE:

August 30, 2018

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

IMPORTANT!

READ BEFORE PROCEEDING!

GENERAL SAFETY GUIDELINES

This equipment is a relatively complicated apparatus. During rigging, installation, operation, maintenance, or service, individuals may be exposed to certain components or conditions including, but not limited to: heavy objects, refrigerants, materials under pressure, rotating components, and both high and low voltage. Each of these items has the potential, if misused or handled improperly, to cause bodily injury or death. It is the obligation and responsibility of rigging, installation, and operating/service personnel to identify and recognize these inherent hazards, protect themselves, and proceed safely in completing their tasks. Failure to comply with any of these requirements could result in serious damage to the equipment and the property in

which it is situated, as well as severe personal injury or death to themselves and others at the site.

This document is intended for use by owner-authorized rigging, installation, and operating/service personnel. It is expected that these individuals possess independent training that will enable them to perform their assigned tasks properly and safely. It is essential that, prior to performing any task on this equipment, this individual shall have read and understood the on-product labels, this document and any referenced materials. This individual shall also be familiar with and comply with all applicable industry and governmental standards and regulations pertaining to the task in question.

SAFETY SYMBOLS

The following symbols are used in this document to alert the reader to specific situations:

Indicates a possible hazardous situation which will result in death or serious injury if proper care is not taken.

Identies a hazard which could lead to

damage to the machine, damage to other equipment and/or environmental pollution if proper care is not taken or instructions and are not followed.

Indicates a potentially hazardous situation which will result in possible injuries or damage to equipment if proper care is not taken.

External wiring, unless specied as an optional connection in the manufacturer’s product line, is not

to be connected inside the control cabinet. Devices such as relays, switches, transducers and controls and any external wiring must not be installed inside the micro panel. All wiring must be in accor-

dance with the manufacturer's published specications and must be performed only by a qualied

electrician. The manufacturer will NOT be responsible for damage/problems resulting from improper connections to the controls or application of improper control signals. Failure to follow this warn-

ing will void the manufacturer’s warranty and cause serious damage to property or personal injury.

WARNING: This product can expose you to chemicals including formaldehyde, which is known to the state of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

Highlights additional information useful to the technician in completing the work being performed properly.

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

CHANGEABILITY OF THIS DOCUMENT

In complying with the manufacturer's’ policy for continuous product improvement, the information contained in this document is subject to change without notice. There is no commitment to update or provide

lifting, and operating/service personnel should verify whether the equipment has been modified and if current literature is available from the owner of the equipment

prior to performing any work on the equipment. current information automatically to the manual or product owner. Updated manuals, if applicable, can be

CHANGE BARS

obtained by contacting the nearest service office.

Revisions made to this document are indicated with a It is the responsibility of rigging, lifting, and operating/ service personnel to verify the applicability of these documents to the equipment. If there is any question regarding the applicability of these documents, rigging,

line along the left or right hand column in the area the

revision was made. These revisions are to technical in-

formation and any other changes in spelling, grammar

or formatting are not included.

ASSOCIATED LITERATURE

MANUAL DESCRIPTION FORM NUMBER

Vertical Stacked Heat Pump Start-Up and Performance Checklist 145.18-CL1

Vertical Stacked Water Source Heat Pump Heating and Cooling Data Record Sheet 145.18-CL2

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

CABINET NOMENCLATURE

1, 2 3, 4 5 6 7 8 9 10 11, 12 13 14 15

VB 12 M 1 D E A 2 2T 4 0 C

PRODUCT CATEGORY

VB = Vertical Stacked Heat Pump -

Standard Cabinet Assembly

VM = Vertical Stacked Heat Pump -

Master Cabinet Assembly

VS = Vertical Stacked Heat Pump -

Satellite Cabinet Assembly

UNIT CAPACITY

09 = 0.75 TON 24 = 2 TON

12 = 1 TON 30 = 2.5 TON

15 = 1.25 TON 36 = 3 TON

18 = 1.5 TON

CONTROL OPTIONS

M = Microprocessor (MP) Control with 2-Speed

Unit Mounted Switch

2 = MP Control with 2-Speed Thermostat Control

3 = MP Control with 3-Speed Thermostat Control

P = MP Control with Surface-Mount Thermostat

Connection with Unit Mounted Switch

4 = MP Control with Surface-Mount Thermostat

Connection with 2-Speed Thermostat Control

5 = MP Control with Surface-Mount Thermostat

Connection with 3-Speed Thermostat Control (ECM Only)

VOLTAGE

1 = 208/230-60-1

6 = 265-60-1

ELECTRICAL CONNECTION

0 = None (Terminal Block)

D = Non-Fused Disconnect

F = Disconnect with Fuses

BLOWER OPTIONS

A = PSC Blower

B = Hi-Static PSC Blower

E = ECM Blower

F = Hi-Static ECM Blower

G = ECM with Continuous Low Speed

H = Hi-Static ECM with Continuous Low Speed

DESIGN SERIES

C = Current Generation

MISCELLANEOUS OPTIONS

0 = None

S = Stainless Steel (SST) Drain Pan

F = MERV 8 Filters

C = SST Drain Pan with MERV 8 Filters

HORIZONTAL DISCHARGE OPENING ORIENTATION

00, 0T 1H, 1T 2H, 2T 3H, 3T

X = None B = Back 1 = Left + Front 7 = Front + Left + Right

F = Front 2 = Left + Back 8 = Front + Right + Back

L = Left 3 = Left + Right 9 = Front + Left + Back

R = Right 4 = Right + Back

5 = Right + Front

6 = Back + Front

SUPPLY AIR CONFIGURATION

1H = Single Horizontal Supply 2T = Double Horizontal Supply

2H = Double Horizontal Supply

3H = Triple Horizontal Supply 3T = Triple Horizontal Supply

0T = Top Only

1T = Single Horizontal Supply

+ Top

00 = Field Cut (No Openings)

RISER ARRANGEMENT

1 = Right Hand Risers

2 = Left Hand Risers

3 = Back Risers

4 = Right Hand Risers with Cover

5 = Left Hand Risers with Cover

6 = Back Risers with Cover

CABINET OPTIONS

Cabinet Height

88 inches A G L R W

80 inches B H M T X

80 inches with 4-inch Stand D K P V Z

80 inches with 8-inch Stand F 2 4 6 8

No OA

Options

Left Top OA Entry

(4-inch Round)

Left Top OA Entry (4-inch

Round with Motorized Damper)

Right Top OA Entry

(4-inch Round)

Right Top OA Entry (4-inch

Round with Motorized Damper)

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

1, 2, 3, 4 5, 6 7 8 9 10 11 12 13

VSCS 12 C 1 0 0 A C 0

PRODUCT CATEGORY

VSCS = Vertical Stacked Heat Pump Chassis

R-410A

UNIT CAPACITY

09 = 0.75 TON

12 = 1 TON

15 = 1.25 TON

18 = 1.5 TON

24 = 2 TON

30 = 2.5 TON

36 = 3 TON

CHASSIS NOMENCLATURE

MISCELLANEOUS OPTIONS

O = None

WATERSIDE OPTIONS

C = Standard Water Coil

B = Standard Water Coil with Low Temperature

Option

N = Cupro-Nickel Water Coil

R = Cupro-Nickel Water Coil with Low Temperature

Option

AIRSIDE OPTIONS

A = Standard Airside Coil

C = Corrosion Protective Coating

DESIGN SERIES

C = Current Generation

VOLTAGE

1 = 208/230-60-1

6 = 265-60-1

WATER VALVE & PUMP OPTIONS

VALVE OPTIONS

No Water Control Valve

Motorized 2-Way Shut-Off Valve

Motorized 3-Way Shut-Off Valve

VALVE

ONLY

Y-STRAINER

O S

M Y

N V

AUTO-FLOW REGULATOR

0 = No Flow Control Valve

B = 1.5 USGPM

C = 2.0 USGPM

D = 2.5 USGPM

E = 3.0 USGPM

F = 3.50 USGPM

H = 4.0 USGPM

J = 4.5 USGPM

K = 5.0 USGPM

L = 6.0 USGPM

M = 7.0 USGPM

N = 8.0 USGPM

P = 9.0 USGPM

R = 10.0 USGPM

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

TABLE OF CONTENTS

SECTION 1 - INSTALLATION ..................................................................................................................................9

Notice and Disclaimer ......................................................................................................................................9

Disclaimer ................................................................................................................................................9

Pre-Installation .................................................................................................................................................9

Literature .................................................................................................................................................9

Shipping ..................................................................................................................................................9

Inspection and Storage .........................................................................................................................10

Preparations for Installing the Unit ........................................................................................................10

Rigging .................................................................................................................................................. 11

Cabinet Riser Installation ............................................................................................................................... 11

Placing the Cabinet ............................................................................................................................... 11

Riser Loop ...................................................................................................................................................... 16

Hoses .............................................................................................................................................................16

Electrical Wiring .............................................................................................................................................. 18

Field-Installed Power Wiring ..................................................................................................................18

Field-Installed Low Voltage Wiring ........................................................................................................18

Optional Surface Mount Thermostat Connection Wiring ....................................................................... 19

Optional Remote Mounted Thermostat Wiring ...................................................................................... 19

Optional ADA Door Mounted Thermostat .............................................................................................. 20

EC Motor (ECM) Continuous Fan .........................................................................................................20

Closet and Drywall Installation .......................................................................................................................20

Acoustic Return Air (RA) Panel ......................................................................................................................20

Supply Air (SA) Ductwork ............................................................................................................................... 24

Horizontal Supply Air ............................................................................................................................. 24

Top Discharge Supply Air ......................................................................................................................24

Top Mounted Fresh Air Intake ........................................................................................................................27

Top Mounted Fresh Air Intake with Motorized Damper .........................................................................27

System Flushing and Cleaning ...................................................................................................................... 28

Flushing the System .............................................................................................................................. 28

Cleaning the System .............................................................................................................................29

Chassis Installation ........................................................................................................................................32

For Units with NPSH Valve Connection and Hose Sets ........................................................................ 32

For Units with NPT Style (Tapered Pipe Thread) Valve Connection and Hoses ...................................32

SECTION 2 - OPERATION .....................................................................................................................................35

Pre-Start-Up Checklist .................................................................................................................................... 35

Initial Unit Start-Up .........................................................................................................................................35

System Loop Temperature .............................................................................................................................36

Fan Speed Adjustment ................................................................................................................................... 36

Unit Controls ................................................................................................................................................... 40

Sequence of Operation .........................................................................................................................40

Continuous Blower ................................................................................................................................40

Safety Control Reset .............................................................................................................................40

Operation Errors .................................................................................................................................... 41

Safety Controls ...................................................................................................................................... 41

Random Start ........................................................................................................................................42

Compressor Protection ..........................................................................................................................42

Microprocessor Control Unit Flash Codes .............................................................................................42

Communication ....................................................................................................................................42

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

TABLE OF CONTENTS (CONT'D)

SECTION 3 - MAINTENANCE ................................................................................................................................ 43

APPENDIX ..............................................................................................................................................................45

Heating and Cooling Data Record Sheet .......................................................................................................49

R-410A Quick Reference Guide ..................................................................................................................... 51

LIST OF FIGURES

FIGURE 1 - Ideal Riser Insertion Depth ..................................................................................................................12

FIGURE 2 - Correct/Incorrect Stub-Out Positions in Cabinet Riser Opening ..........................................................12

FIGURE 3 - Cabinet Unit Dimensions & Floor Sleeve Dimensions .........................................................................14

FIGURE 4 - Cabinet Riser Dimensions ...................................................................................................................15

FIGURE 5 - Standard Factory Supplied NPSH Hose Kits and Risers.....................................................................17

FIGURE 6 - Optional Field Supplied Risers with Factory Supplied NPSH Hose Kits and Shut-Off Valves .............17

FIGURE 7 - Conversion of NPT to NPSH Type Fittings (VB Units with NPT Fittings Only) ....................................18

FIGURE 8 - Field Wiring Diagram ...........................................................................................................................19

FIGURE 9 - Remote Thermostat Wiring ..................................................................................................................19

FIGURE 10 - Unit Switch Plate with ADA Thermostat Connection .......................................................................... 20

FIGURE 11 - Critical Return Air (RA) Panel with Unit Cabinet Installation Dimensions ..........................................21

FIGURE 12 - RA Panel Cross Section Installation at Floor Level ...........................................................................22

FIGURE 13 - RA Panel Dimensions ........................................................................................................................22

FIGURE 14 - Optional RA Panel with ADA Mounted Thermostat ............................................................................23

FIGURE 15 - Supply Grille with Volume Damper and 1/8-inch Neoprene Tape Applied to Perimeter ....................24

FIGURE 16 - Unit Mounted Supply Grille Installation ..............................................................................................25

FIGURE 17 - Damper Plate Fasteners ....................................................................................................................27

FIGURE 18 - Remove the Red Cover .....................................................................................................................27

FIGURE 19 - Position Black Cover..........................................................................................................................28

FIGURE 20 - System Flushing and Cleaning ..........................................................................................................29

FIGURE 21 - Fresh Air Opening without Motorized Damper – Left and Right Hand Unit Shown ...........................30

FIGURE 22 - Fresh Air Opening with Motorized Damper – Left and Right Hand Unit Shown ................................31

FIGURE 23 - Lift the Chassis Front .........................................................................................................................33

FIGURE 24 - Tilt the Chassis ..................................................................................................................................33

FIGURE 25 - Insert the Chassis ..............................................................................................................................33

FIGURE 26 - Pivot the Chassis ...............................................................................................................................34

FIGURE 27 - Slide the Chassis ...............................................................................................................................34

FIGURE 28 - Check the Chassis .............................................................................................................................34

FIGURE 29 - PSC Motor Wiring Diagram ...............................................................................................................45

FIGURE 30 - ECM Wiring Diagram .........................................................................................................................46

FIGURE 31 - Continuous Fan with ECM Wiring Diagram .......................................................................................47

FIGURE 32 - Motorized Damper ECM Wiring Diagram ..........................................................................................48

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

LIST OF TABLES

TABLE 1 - High Series Physical Data .....................................................................................................................13

TABLE 2 - Replacement Hose Gaskets ..................................................................................................................16

TABLE 3 - Chassis Hoses .......................................................................................................................................16

TABLE 4 - Typical Wire Connections ......................................................................................................................19

TABLE 5 - Unit Supply Opening Sizes ....................................................................................................................26

TABLE 6 - Unit Supply Face Velocity (FPM) ...........................................................................................................26

TABLE 7 - Operating Limits ....................................................................................................................................36

TABLE 8 - PSC Standard Blower Performance (CFM) ...........................................................................................37

TABLE 9 - PSC High Static Blower Performance (CFM) ........................................................................................37

TABLE 10 - ECM Standard Blower Performance (CFM) ........................................................................................38

TABLE 11 - ECM High Static Blower Performance (CFM) ......................................................................................38

TABLE 12 - ECM Blower Performance - All Speed Taps (CFM) ............................................................................. 39

TABLE 13 - Flash Codes ........................................................................................................................................42

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 1 - INSTALLATION

After installing the unit, show the user how to turn off the electricity to the unit. Point out control and switch locations for turning off the electricity.

Ensure the user understands the importance of following all safety precautions.

NOTICE AND DISCLAIMER

This unit contains refrigerant installed by the factory that is approved for use in the unit’s intended country of installation or market. Distributors are only authorized to provide refrigerants that have been approved for use in the countries or markets they serve.

The refrigerant used in this unit is identified on the unit's nameplate and in this manual. Any additions of refrigerant into this unit must comply with the country’s requirements with regard to refrigerant use and should be obtained from manufacturer approved distributors. Use of unapproved refrigerant substitutes will void all warranties and can cause injury or death.

Modifications may invalidate product certifications or violate country standards. Any person or entity making changes to the product is responsible for obtaining the required engineering review and approval, as well as covering certification and other related costs.

Unauthorized customer modifications to certified products are prohibited for the following reasons:

A. Modications may create hazards that could result

in death, serious injury, or equipment damage.

B. Modications will void product warranties.

C. Modications may invalidate product certica-

tions and may violate country standards. Country

standards may require that only certied products be used in certain applications, and modications that result in the loss of product certication may

violate those standards.

PRE-INSTALLATION

Literature

Disclaimer

Customer modifications to certified products are prohibited. If performed without the express written approval of the manufacturer, modifications will void all warranties (expressed or implied) and may result in hazardous situations resulting in equipment damage, serious physical injury or property damage, or death.

The manufacturer has certified the product as being compliant with applicable government and/or industry standards. Product certification is designated either on the product itself or in the product literature. The certification mark identifies the applicable standards as well as the Nationally Recognized Test Lab (NRTL) or other testing facility that conducted the testing, where applicable.

If changes are made to the product, an engineering review is required to assess the impact to the product certification. In some instances, the changes may require that the NRTL or testing facility review and re-approve the product by means of a field or site inspection and certification.

Review this Installation, Operation, and Maintenance (IOM) manual prior to installation. After installing the unit, give this IOM to the end user. If help is needed with any of the installation instructions or matters relating to the unit, contact the sales office where you bought the unit. You may also refer to the unit rating plate for a contact name.

Shipping

Cabinets and risers ship in one of the following configurations:

• Cabinets are stacked on their side with risers attached. Chassis ship on separate skids.

• Risers ship loose, packaged in boxes and sorted

by oor. Cabinets ship upright up to four per skid.

Chassis ship on separate skids.

• Risers ship loose, packaged in boxes, and sorted by oor. Cabinets ship upright on skids with chassis inside the cabinet. Chassis electrical and water connections are not installed. The chassis is secured to the service panel. Remove the screws before removing the service panel and chassis.

The cabinet must remain standing upright. Do not place cabinets on their side with the chassis inside.

SECTION 1 - INSTALLATION

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

Inspection and Storage

Store cabinets, chassis, and risers the same way they were shipped. Ensure the storage area is dry and protected from the environment. Keep the units in their upright position. If the risers are stored at the job site, ensure the pipe ends are capped to prevent foreign object debris and contamination.

In areas where construction is not complete (including dry wall, plaster, paint, and where any emission of dust particulates or fumes from outgassing are present), all precautions must be taken to protect the cabinet, openings, and chassis from contamination or physical damage.

Upon delivery, perform the following inspections:

1. Inspect the unit for shipment damage. Notify the Transportation Company of any damage and note the damage on the shipping receipt.

Rough handling may dislocate and damage internal components.

• Remove the inner service panel and manually check the blower wheel for free rotation.

• Match the refrigeration chassis to the proper cabinets by referring to the cabinet and chassis nameplate and label information.

• Remove the chassis refrigeration access panel (top cover) and inspect the unit. Ensure that the refrigerant tubing is free from obvious physical damage and kinks, and check that piping does not touch other unit components.

• Ensure the compressor is mounted on neoprene isolators with metal spacing sleeves inside. Secured it with nuts that are snug against the metal spacer sleeves.

• Inspect all electrical connections. Connections must be clean and tight at the terminals.

Do NOT use the risers to lift the cabinet assembly.

2. Inspect the riser projections at each end of the cabinet for misalignment or end damage that would prevent making an acceptable connection.

3. Inspect the thermostats and other accessories that have been shipped separately for quantity and transit damage.

Store the refrigeration chassis in the normal upright orientation to maintain oil in the compressor sump.

Preparations for Installing the Unit

Before installing the unit, perform the following preparations:

• Verify the model number on the unit nameplate with the ordering and shipping information to ensure the correct unit has been shipped.

• Carefully inspect each unit before delivery to the installation site. All cabinets may not be equipped with the same size riser or the same air supply grille arrangement. In most cases, each cabinet is

individually tagged for a specic location in the

building.

Do NOT install this unit outdoors.

A compressor/unit comprises a pressurized system. Never loosen threaded joints while the system is under pressure, and never open pressurized system parts.

Before servicing, open and tag all disconnect switches.

Do NOT install units in a flammable environment due to the danger of an explosion.

• Keep the cabinet sealed with the shipping materials until all plastering, painting, and construction work is complete.

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 1 - INSTALLATION

Safety guards, shields, barriers, covers, and protective devices must not be removed while the compressor/unit is operating.

All safety features, disengagement, and interlocks must be in place and function correctly before the equipment is put into operation. Never bypass or wire around any safety device.

Use gloves and protective goggles where appropriate and have a gas mask close at hand. Use electrical protection equipment and tools suited for electrical operations.

Personnel must be qualied according

to national safety rules and regulations.

CABINET RISER INSTALLATION

Do NOT use the risers to lift or move the cabinets.

Refer to Figure 3 on page 14, which shows the correct location of the cabinet in relation to the floor sleeve and risers.

Risers are not designed to support or lift any part of the cabinet. Do not use them to lift a cabinet. Risers are attached using nylon ties to allow for slight adjustments during installation, and expansion of riser column during operation. Take care during installation to avoid damage to risers and riser stub-outs.

Improper handling and installation of risers could damage riser stub-outs and valves and could result in property damage, death, or serious injury.

Only manufacturer- qualied personnel

should install this system. If not, it may cause water leakage, electric shock, or

re.

Rigging

Follow all applicable regulations and safety practices during rigging and lifting.

Prepare and follow written rigging and lifting plan. Lifting must be directed by trained, professional rigger.

Spreader bars must be used and be long enough to prevent rigging from contacting unit. Use only the designated lift points according to unit's IOM, and use ALL lift points.

Locate the center of gravity through trial lifts to account for possible variations in unit configuration. Use rigging and lifting techniques that keep the unit stable and level. Keep clear of unit when lifted.

Do not allow the risers to bottom out. Riser stub-out should be centrally located with the stub-out opening of the cabinet riser. Do not allow riser stub-outs or risers to contact cabinet sheet metal.

Do not drag risers on the oor while moving the cabinet.

When the risers are shipped loose, riser installation can be completed before cabinet installation. When installing risers, ensure the riser stub-outs are centered in the the cabinet openings. Ensure that the risers cannot bottom out in swage (see Figure 1 on page 12).

When risers are shipped attached to cabinets, complete the installation of risers and cabinet at the same time. Detaching the riser from the cabinet is unnecessary.

Placing the Cabinet

The correct location of the cabinet in relation to the floor sleeve and risers is shown in Figure 3 on page

14. To place the cabinet correctly, perform the following steps:

SECTION 1 - INSTALLATION

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

1. Place the cabinet in a horizontal position on the oor adjacent to its installation location (when risers are attached to cabinet).

The units are designed to accommodate a maximum supply and return riser stub-out movement of 1-1/2 inches due to expansion and contraction (total movement of 3 inches). If the total calculated riser expansion or contraction exceeds 1-1/2 inches, the field must provide expansion compensation.

2. Install eld or factory-provided riser extensions, if required, to the unit-mounted risers prior to

moving the cabinet into nal position.

3. Raise the cabinet upright. Lower the risers through

the oor cutout, aligning the risers into the swaged section of the unit on the oor below.

Take extra care not to scrape or dent risers during positioning. The riser tailpiece should insert approximately 2 inches into the 3-inch long swaged section of the unit below.

7. Center the risers’ horizontal stub-outs (complete with factory-installed shut-off valves) in the cabinet slot openings. Ensure that the stub-outs are perpendicular to the side/back panel.

8. Verify all risers are vertical and that they penetrate the swaged joint at least 1 inch.

Factory provided risers come with a 3-inch deep swage. Do not allow risers to completely bottom out at 3 inches in the swage. The 3-inch swage depth is oversized to allow for adjustments if necessary to keep riser stub-outs and valves centered in the cabinet opening.

9. Center the riser stub-out in cabinet opening to allow for expansion and contraction. Riser stubouts must not contact on any sheet metal opening. Otherwise damage can occur to stub-outs, resulting in water leaks and property damage.

Top Vertical

Riser

DO NOT allow the riser tailpiece to bottom out into the swaged section. This ensures the correct riser positioning and com-

pensates for variations in oor-to-oor

dimensions.

4. Center the risers in the pipe chase, and level the cabinet using shims as necessary.

5. Plumb risers in two planes to assure proper unit operation and condensate drainage.

6. Anchor the cabinets into place using rubber isolated sheet metal angles. Approved and tested sheet metal angles are available from factory.

It is strongly recommended to install vibration isolation pads to reduce noise transmission into the floor. Failure to use isolation kits could result in loud unit operation.

Do not drill or drive screws into the cabinet in the area of the internal drain pan.

2-inch Ideal

3-inch Cup

Height

Bottom

Vertical Riser

FIGURE 1 - IDEAL RISER INSERTION DEPTH

Insertion Depth

LD23535

LD19017

FIGURE 2 - CORRECT/INCORRECT STUB-OUT POSITIONS IN CABINET RISER OPENING

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 1 - INSTALLATION

10. Braze or solder riser joints with industry accepted solder or brazing rod material.

The riser system must be secured to building structure. Cabinets are not designed to support the riser system.

11. Secure the riser system at a minimum of one point to the building structure. Cabinets are not intended to support the riser system. If the temperature range of the system exceeds the allowed expansion and contraction limits (1-1/2 inches maximum), the installing contractor must make riser compensation provisions.

12. Ensure that individual unit shut-off valves remain closed until the circulating loop system is cleaned

and ushed.

TABLE 1 - HIGH SERIES PHYSICAL DATA

HIGH SERIES MODEL 09 12 15 18 24 30 36

Nominal Cooling (ton)

Compressor Type Rotary Scroll

Refrigerant Charge (oz) 21 25 34 38 44 48 50

Air Coil-Type Enhanced Copper Tubes, Enhanced Aluminum Fins

Face Area (sq ft) 1.46 1.56 2.35 2.35 2.63 3.33 3.33

0.75 1.0 1.25 1.5 2.0 2.5 3.0

Rows/FPI 2/146 3/14 3/14 3/14 3/14 3/14 3/14

Water Coil-Type Enhanced Surface Co-Axial

Standard Blower/Motor

Diameter x Width (inches) 9x4T 9x4T 9x7T 9x7T 9x7 9x8 9x8

Motor HP 0.10 0.10 0.17 0.17 0.25 0.33 0.50

Hi-Static Blower/Motor DWDI Forward-Curved Centrifugal/PSC Direct Drive

Diameter x Width (inches) 9x4T 9x4T 9x7T 9x7T 10x7T 10x8T 10x8T

Motor HP 0.10 0.10 0.17 0.17 0.25 0.33 0.50

EC Motor (ECM) Blower/Motor DWDI Forward-Curved Centrifugal/ECM Direct Drive

Diameter x Width (inches) 9x4T 9x4T 9x7T 9x7T 10x7T 9x8 9x8

Motor HP 0.33 0.33 0.33 0.33 0.33 0.50 0.50

Hi-Static ECM Blower/Motor DWDI Forward-Curved Centrifugal/ECM Direct Drive

Diameter x Width (inches) 9x4T 9x4T 9x7T 9x7T 10x7T 10x8T 10x8T

Motor HP 0.33 0.33 0.33 0.33 0.33 0.50 0.50

Filter Quantity/Size (inches) 1/14x25x1 1/14x25x1 1/16x30x1 1/16x30x1 1/16x30x1 1/20x30x1 1/20x30x1

Cabinet Weight (lb)

Double Width Double Inlet (DWDI) Forward-Curved Centrifugal/Permanent Split Capacitor

(PSC) Direct Drive

130 130 145 145 150 175 175

Chassis Weight (lb) 70 75 95 100 140 155 160

NOTE:

1. Nominal capacity is calculated in accordance with ARI/ISO Standard 13256-1 for water loop application.

2. Cabinet weight is approximate and does not include the weight of the risers.

SECTION 1 - INSTALLATION

7/8-inch

Control

Entrance

inches

or 88

inches

Riser Opening KnockOuts (All 3 Sides)

3 inches

50 inches

B A

Left View

Optional 24V

Connection for

Surface Mount/

Remote Mounted

Thermostat

Electrical Box

Service

Pass-Thru

48 inches

Return Air Flange Standard 1 inch

6 inches

4.5 inches

Hoses

Front View

Optional Front Supply Opening

7 inches

Switch Plate with 2 Speed Fan Switch (Optional: Disconnect/Fuses, ADA Molex Connector)

Chassis Service Panel

4 inches

4.25 inches

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

CABINET DIMENSIONS (INCHES)

MODEL A B

RA FLANGE

WIDTH (C)

09–18 17 17 16

15–24 20 20 19

30–36 24 24 23

Back

Optional Riser Cover Shown

13.25

inches

Right

A/2

4.25 inches

1-inch

Supply

Duct

Flange

6 in.

50.5 inches

7/8-inch OD Power Entrance 7/8-inch OD Control Entrance

4.25 inches

4.5 inches

Right View

4 in.

Supply Riser Opening

Return Riser Opening

inches

Supply Riser

Opening

36 inches

A/2

Back View

8.5

Return Riser Opening

Condensate Riser Opening

Left

Top View Front

R - Return Riser S - Supply Riser D - Drain Riser

4-5/16 inches

VSHP Cabinet

Drain Pan

Do not penetrate

1.50

this area with drills or screws

4.75

NOTES

1. Supply, return, and condensate riser openings are pre-punched on all sides and eld convertible. Cut tabs to remove the knock-out.

2. Supply and return openings are 4 inches x 2.5 inches. During riser installation, ensure the stub-out is centered in supply and return openings.

3. Condensate P-trap is accessible from the front by removing the bottom cover plate.

4. Riser and shut-off location is measured from base of cabinet and does not include the stand height.

FIGURE 3 - CABINET UNIT DIMENSIONS & FLOOR SLEEVE DIMENSIONS

LD27627

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 1 - INSTALLATION

Return Air Opening

Optional

Supply

Opening

6 in.

P-Trap

Insulation

Shut-Off

Ball Valve

3 in.

Supply

and

Return

Risers

Allow for 2-inch Insertion into Swage End

36 inches

Condensate Riser (Max. 120 inches)

Supply and Return Riser (Max. 120 inches)

As Req'd

Reducer

Reduce Up Riser (Max. 120 inches)

As Req'd

NOTE

Riser shut-off valve is measured from base of cabinet and does not include the stand height.

As Req'd

Reduce Down Riser (Max. 120 inches)

FIGURE 4 - CABINET RISER DIMENSIONS

Capped Down Riser

Capped Up Riser

As Req'd

LD19330

SECTION 1 - INSTALLATION

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

RISER LOOP

5. Install the following parts at the base of each supply and return riser to enable system ushing, balancing, and servicing:

• Drain valve

• Shut-off/balancing valves

• Flow indicators

• Drain tees

6. Install strainers at the inlet of each circulating pump.

7. Insulate loop water piping that runs through unconditioned areas of the building or outside the building.

When the loop water temperature is maintained between nominal operating limits of 60.0–90.0°F, piping does not sweat or suffer undue heat loss at conditioned space temperatures.

8. Install vents in piping loop as required to bleed

residual air from the piping system during lling

and servicing.

9. Determine the riser shut-off valves and hose kits

required for job specic site conditions:

a. Factory-supplied risers come with the appro-

priate hose kits with NPSH type fittings (see Figure 5 on page 17). Before attaching NPSH type hoses, check that the female end gasket is not missing and is free of damage or debris. See Table 2 for information on re- placement gaskets for NPSH hose kits.

b. For field-supplied risers, it is recommended

to order the appropriate NPSH type field hose kits from the factory, complete with shut-off valves. Shut-off valves are to be field sweat connected to risers (see Figure 6 on page 17).

c. Legacy chassis with NPT type connections

and matching risers with NPT shut-off valve connections require a special hose kit. The kit comes complete with a NPT to NPSH swivel adapter on the shut-off valve and chassis connection to mate with factory hoses (see Figure 7 on page 18.

TABLE 2 - REPLACEMENT HOSE GASKETS

PART NUMBER DESCRIPTION

VSGK-UFHW-050 1/2-inch Rubber Gasket

VSGK-UFHW-075 3/4-inch Rubber Gasket

HOSES

Ensure the correct hose set is matched with the compatible unit size (see Table 3). Instal the NPSH factory- provided hoses by completing the following steps:

1. Inspect for missing or damaged hose gasket. See Table 2 for replacement gasket part numbers.

2. Tighten by hand the screw connections to the

male NPSH tting on the shut-off valve. Hold the

ferrule stationary when tightening.

3. Tighten using a backup wrench a 1/4 turn further. Do not overtighten.

When installing hoses, do not apply a twist or torque load on the hose.

When tightening hoses, hold the ferrule stationary by hand while tightening the screw connections. Avoid tight bends, or

water ow and high pressure drops may

occur.

Hose gasket does not require extreme tightening to obtain a seal. DO NOT OVERTIGHTEN, or damage to gasket or sealing surface will occur. Do not apply thread sealant.

Hoses must be hand tightened, then further tightened for roughly another 1/4 turn. Check for leaks before tightening any further. Do not apply excessive force; rubber gaskets might get damaged.

Always use a back-up wrench when tightening hoses to valves. Otherwise, valve solder joint may fail, leading to property damage or serious injury.

TABLE 3 - CHASSIS HOSES

CHASSIS MODEL HOSE TYPE

09–18 1/2-inch NPSH Female-Female

24–36 3/4-inch NPSH Female-Female

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 1 - INSTALLATION

1/2-INCH OR 3/4-INCH MALE NPSH BALL VALVE

1/2-INCH OR 3/4-INCH NPSH THREADS

1/2-INCH OR 3/4-INCH FLEXIBLE CONNECTOR HOSE (24 INCHES LONG)

GASKET

1/2-INCH OR 3/4-INCH NPSH THREADS

1/2-INCH OR 3/4-INCH MALE NPSH

NOTE

National Pipe Straight Hose (NPSH) connection

FIGURE 5 - STANDARD FACTORY SUPPLIED NPSH HOSE KITS AND RISERS

1/2-INCH OR 3/4-INCH WATER PIPE STUB-OUT

1/2-INCH OR 3/4-INCH SWEAT TO MALE NPSH BALL VALVE

1/2-INCH OR 3/4-INCH NPSH THREADS

1/2-INCH OR 3/4-INCH FLEXIBLE CONNECTOR HOSE (24 INCHES LONG)

1/2-INCH OR 3/4-INCH NPSH THREADS

1/2-INCH OR 3/4-INCH MALE NPSH

LD18126

FIGURE 6 - OPTIONAL FIELD SUPPLIED RISERS WITH FACTORY SUPPLIED NPSH HOSE KITS AND SHUT-

OFF VALVES

NOTE

National Pipe Straight Hose (NPSH) connection

LD18127

SECTION 1 - INSTALLATION

HANDLE MUST BE

FACING THE BOTTOM

1/2-INCH OR 3/4-INCH FPT BALL VALVE (FACTORY OR FIELD PROVIDED)

FEMALE SWIVEL 1/2-INCH OR 3/4-INCH NPSH THREADS

GASKET INCLUDED WITH HOSE

ADAPTER MPT TO NPSH INCLUDED WITH HOSE

GASKET INCLUDED

WITH HOSE

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

1/2-INCH OR 3/4-INCH FLEXIBLE CONNECTOR HOSE (24 INCHES LONG)

FEMALE SWIVEL 1/2-INCH OR 3/4-INCH NPSH THREADS

ADAPTER MPT TO NPSH INCLUDED WITH HOSE

CHASSIS WATER CONNECTION 1/2-INCH OR 3/4-INCH FPT (FACTORY PROVIDED)

NOTE

National Pipe Straight Hose (NPSH) connection

FIGURE 7 - CONVERSION OF NPT TO NPSH TYPE FITTINGS (VB UNITS WITH NPT FITTINGS ONLY)

ELECTRICAL WIRING

Lock all electrical power supply switches in the OFF position before installing the

Use copper conductors only! Failure to use copper conductors can result in equipment damage.

unit. Failure to disconnect power supply may result in electrical shock or even death.

Verify that the available unit power supply is compat-

Field-Installed Power Wiring

ible with the unit’s nameplate rating. Ensure the breaker is properly sized as per the nameplate. The line volt-

Power wiring to the equipment must conform to National Electrical Codes (NEC), local electrical codes,

age supply enters through the right side of the cabinet at the 7/8-inch power entrance knock-out.

and must be performed by a licensed electrician.

Connect to the line side of the factory-installed termi-

Provide each unit with its own separate electrical circuit, means of circuit protection, and electrical disconnect switch. Follow current NEC ANSI/NFPA 70, CSA

nal block. Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors may result in equipment damage.

C22.1 C.E.C. Part 1, and state and local codes.

Failure to provide these shut-off means could cause electrical shock or re, resulting in damage, injury, or death.

Field-Installed Low Voltage Wiring

Select a location for room thermostat, away from supply air registers, on draft-free interior wall that is far from lights, television, direct sunlight, or other heat sources.

LD27628

Locate thermostat away from supply drafts. Ensure the back of the thermostat is sealed and protected from air drafts. Short cycling can result in damage to the unit.

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 1 - INSTALLATION

Install the thermostat by connecting the remote thermostat wiring to microprocessor board low voltage terminal strip. See Figure 8 for typical wiring connections.

Ensure that the control wiring between the thermostat and the unit’s terminations does not exceed 1 ohm.

Resistance in excess of 1 ohm may cause

component damage due to insufcient AC

voltage supply.

Check all loads and conductors for grounds, shorts, or miswiring. Do not run the low voltage wiring in the same conduit with the high voltage power wiring.

TABLE 4 - TYPICAL WIRE CONNECTIONS

RECOMMENDED WIRE

SIZE (GAUGE)

20 50

18 75

16 125

MAXIMUM LOW VOLTAGE

WIRE LENGTH (FEET)

Optional Surface Mount Thermostat Connection Wiring

For applications where the thermostat is mounted directly above the return air (RA) panel, select cabinet control option P (for example, VB12P). The thermostat Molex pigtail harness (shipped loose) is field wired to thermostat terminals. The Molex connector clips to the panel-mounted, mating Molex connector on unit cabinet that is located 7 inches above the electrical box. See optional 24V surface mount connection in Figure 3 on page 14.

Optional Remote Mounted Thermostat Wiring

For units ordered with an extended thermostat harness option, the thermostat is remote mounted. A specific, plenum rated extended harness length can be ordered.

Use low voltage 7/8-inch knock-out on the side of the unit at the electrical box to field wire the low voltage thermostat wiring. Using a plastic bushing to pass the harness inside electrical box to the factory wired mating Molex harness (see Figure 9). The thermostat pigtail Molex harness ships loose for field wiring to the thermostat terminals.

FIGURE 8 - FIELD WIRING DIAGRAM

LD27629 LD27630

FIGURE 9 - REMOTE THERMOSTAT WIRING

LD19520

SECTION 1 - INSTALLATION

Optional Disconnect

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

CLOSET AND DRYWALL INSTALLATION

To avoid potential vibration and noise issues, the RA panel should not contact any part of the unit cabinet or sleeve. Maintain

a sufcient gap between RA panel frame

and cabinet.

Optional ADA Molex Connection

LD27631

FIGURE 10 - UNIT SWITCH PLATE WITH ADA THERMOSTAT CONNECTION

Optional ADA Door Mounted Thermostat

For units ordered with the Americans with Disabilities Act (ADA) thermostat option to meet ADA requirements, the thermostat is located on the RA panel door at a height of 48 inches from the base of the cabinet. Unit is supplied with a custom RA door panel with thermostat mounting holes, unit switch plate with a Molex connector, and an ADA Molex pigtail harness. See Acoustic Return Air (RA) Panel on page 20 and Figure 14 on page 23.

Wire leads from the ADA thermostat harness are field wired to thermostat terminals. The Molex end of the ADA thermostat harness is field connected to the surface mounted Molex connector at unit switch plate.

Mount the thermostat using the factory provided 1/4inch number 8 screws. The ADA thermostat harness is plenum rated. It hangs behind the RA door. For chassis servicing, unclip harness from unit switch plate.

EC Motor (ECM) Continuous Fan

This option features a factory wired continuous low speed fan circuit. Because of the five available motor speed taps, the EC motor (ECM) offers an ideal range for supporting continuous low speed fan.

Build a closet enclosure for the cabinet that incorporates the RA panel size while maintaining a sufficient gap between the closet and cabinet. This prevents the cabinet from contacting the RA panel and closet enclosure. Refer to Acoustic Return Air (RA) Panel on page

20, Figure 11 on page 21, and Figure 12 on page

22.

1. Cover the supply and return openings with plastic or cardboard before installing drywall around cabinet. This prevents dust or debris from entering the unit components.

2. Install the drywall using conventional construction methods. Do not fasten studs or drywall directly to the cabinet surface. Space the framing members according to the RA access and the type/ quantity of supply air (SA) outlets. See Figure 11 on page 21 and Figure 12 on page 22.

3. Install sheetrock around unit cabinet by securing the drywall to the building construction studs.

4. Cut holes around the SA and RA openings to allow access to the unit chassis, unit controls, and the SA connection.

5. Vacuum all dust and construction debris from the unit drain pan, electrical box, and discharge plenum after cutting out the supply/returns openings.

To prevent electrical shorts and drain pan leaks, DO NOT penetrate unit components when driving screws near the unit control box or drain pan. Do not allow screws or nails to penetrate chassis, risers, electrical junction boxes, conduits, or to interfere with chassis removal.

ACOUSTIC RETURN AIR (RA) PANEL

The fan runs continuously on the low fan speed setting even if there is no demand for cooling or heating. The continuous fan is controlled by a dry contact to provide interlocking to energy recovery ventilator (ERV) or room occupancy control. See Figure 28 on page 46 for electrical schematics.

RA panels are painted standard appliance white. Carefully unpack RA panels from their shipping box. RA panels with optional key locks require the key locks to be field installed to the slot in the panel door. ADA RA door panels come with an opening and pilot holes mounting a thermostat. The ADA harness for wiring the thermostat and connecting to the unit is shipped loose with the thermostats.

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 1 - INSTALLATION

1. Locate the drywall opening at a distance from the unit so that it prevents the RA panel from contacting the unit sleeve. See Figure 11 on page 21 and Figure 12 on page 22.

2. Center the RA panel throat opening to the unit

cabinet RA ange opening.

3. Fasten the RA panel to frame opening using the screws provided. See Figure 11 on page 21.

Vertical Stack Cabinet

Top View

0.5-inch Drywall

6 x Fasteners

Figure 14 on page 23 shows the opening for mounting an ADA compliant thermostat at 48 inches above floor. Note that location of the opening on the door changes if the cabinet is ordered with a stand. A left hand opening door is shown. The RA panel with ADA is not reversible. It must be ordered in either a left or right-hand opening configuration, determined by the location of the door hinge.

Return Air Flange Standard = 1 inch Optional OA Fresh Air = 4.25 inches

Wall Stud

1-3/16 inch

(Drywall to Fastener Based on 0.5-inch Drywall

Vertical Stack Cabinet Top View

Min. 1/8-inch, Max. 3/8-inch Gap (RA Flange Must Not Contact Acoustic Door Frame)

UNIT SIZE

09/12/15/18 25 3/4 19 19 1/4 23 3/4 ± 1/8 20 20

24/30/36 29 3/4 23 23 1/4 27 3/4 ± 1/8 24 24

NOTE

All dimensions are in inches.

A (PANEL WIDTH)

(SLEEVE

WIDTH)

(R/A PANEL

OPENING)

(ROUGH IN

WIDTH)

(UNIT

WIDTH)

DEPTH)

Rear Closet to Cabinet Back: No Risers = 0.5-inch Minimum With Risers = 5-inch Minimum

2.25-inch Minimum (Unit Sleeve to Drywall)

(UNIT

(NO OA

OPTION)

23 1/4 MIN

23 1/2 MAX

27 1/4 MIN

27 1/2 MAX

(OA OPTION)

27 1/4 MIN

27 1/2 MAX

31 1/4 MIN

31 1/2 MAX

FIGURE 11 - CRITICAL RETURN AIR (RA) PANEL WITH UNIT CABINET INSTALLATION DIMENSIONS

LD19500

SECTION 1 - INSTALLATION

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

RA flange must not contact door frame

Acoustical

1-inch RA flange

Panel Door

Frame

2.5 inches

6 inches

3.75 inches

Cabinet

Floor

Closet Drywall

FIGURE 12 - RA PANEL CROSS SECTION

INSTALLATION AT FLOOR LEVEL

1.92

0.28

0.28 inches

inches

Figure 12 on page 22 shows a cutaway view for a standard cabinet with no stand. Add the stand height to the cabinet to obtain the correct dimension of the RA panel from floor.

For maximum return airow, the ush

mounted acoustic panel must be centered vertically and horizontally over the RA opening of the cabinet. SA duct collar extensions may be required to prevent short cycling.

LD27621

ALL DIMENSIONS ARE IN INCHES

MODEL A B C D

VSCS09–12 22.75 20.50 16.25 18.50 20.75 52.75

VSCS15–24 25.75 23.50 19.25 21.50 23.75 52.75

VSCS30–36 29.75 27.50 23.25 25.50 27.75 52.75

ROUGH-IN

WIDTH

ROUGH-IN

HEIGHT

Mounting Holes x 6

52.50

50.5 inches

56.75

54.75 inches

50.25

54.50

(54 3/4" ROUGH-IN

48.25 inches

52.5 inches

WALL OPENING)

(52.75-inch Rough-In Wall Opening)

NOTES:

1. Acoustic panel is powder coated in appliance white

2. Acoustic panel can be installed on the right hand side or left hand side.

3. See Figure 11 on page 21 for additional RA panel and cabinet installation information.

FIGURE 13 - RA PANEL DIMENSIONS

Magnetic Catches x 2

Magnetic

Catches x 2

54.75 inches

LD19319C

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

1.5 inches

1.50

1.25 inches

1.25

Left Hand Opening Shown

LEFT HAND OPENING SHOWN

SECTION 1 - INSTALLATION

Thermostat mounting location,

Cut-out for routing

cut-out for routing ADA thermostat

ADA thermostat harness

harness

0.5-inch Insulation

1/2" Insulation

Magnetic Catches x 2

Notes:

- Powder coated in 'Appliance White'

NOTES:

- Inside panel lined with 1/2" acoustical insulation

1. Powder coated in appliance white

- Hinged panel complete with magnetic latches

2. Inside panel lined with 0.5-inch acoustical insulation

- Panel comes either Left or Right hand opening

3. Hinged panel complete with magnetic latches

4. Panel comes either left or right hand opening

LD19320

FIGURE 14 - OPTIONAL RA PANEL WITH ADA MOUNTED THERMOSTAT

LD19320

SECTION 1 - INSTALLATION

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

SUPPLY AIR (SA) DUCTWORK

Ensure there is no direct contact between cabinet sheet metal parts and drywall en-

closure. This includes RA and SA anges.

Failure to follow these instructions will negatively affect unit sound performance.

Horizontal Supply Air

A 2-inch duct flange (field provided) may be required to eliminate supply air recirculation when shallow profile, single deflection supply grilles are installed at the cabinet discharge openings. If the discharge from the cabinet is not ducted completely into the conditioned space, air can recirculate into the RA opening from the space inside the drywall enclosure.

Manufacturer supplied grilles have a clearance of a 1/4 inch around the perimeter to fit inside the unit supply flange. Other grille manufacturers could have different clearances that should be verified.

Field supplied gasket must be applied in order to prevent air recirculation and vibration transfer when supply grilles are mounted to unit supply opening. When mounting supply grilles with optional volume damper directly to cabinet supply flange, the volume damper fits inside the cabinet supply flange. It is recommended to apply 1/8-inch neoprene tape (field supplied) around the perimeter of the volume damper prior to inserting it into the supply opening. See Figure 15 on page 24 for an example. This assists in reducing noise transmission and air recirculation into the unit closet.

For ducted openings, connect the unit supply opening to the supply ductwork using a watertight flexible duct connector. This minimizes the transmission of operating sounds through the supply ductwork. Elbows with turning vanes or splitters are recommended to minimize air noise due to turbulence and to help reduce static pressure.

Top Discharge Supply Air

Units that are installed with a top discharge should be connected to the supply ductwork with a watertight flexible connector. This minimizes the transmission of operating sounds through the supply ductwork. Elbows with turning vanes or splitters are recommended to minimize air noise due to turbulence and to help reduce static pressure.

For information on available unit horizontal and top supply openings see Table 5 and Table 6 on page 26. Recommended face velocity at the outlet supply grille is 300–500 FPM. Table 6 gives face velocity at the unit supply openings in relation to Table 5. To calculate the face velocity at the supply grille, take the FPM from Table 6 and divide by the supply grille area factor.

LD27622

FIGURE 15 - SUPPLY GRILLE WITH VOLUME DAMPER AND 1/8-INCH NEOPRENE TAPE APPLIED TO PERIMETER

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

WALL STUD

Wall Stud

D E

VERTICAL STACK CABINET

Vertical Stack Cabinet

Top View

TOP VIEW

Optional Opposed Blade Damper

Louvered Supply Grille

Detail A

DETAIL A

SECTION 1 - INSTALLATION

0.5-inch Drywall

1/2”

DRYWALL

MOUNTING SCREWS

Mounting Screws

VERTICAL STACK CABINET

Vertical Stack Cabinet

Optional Framing Studs

for Supply Opening

FOR SUPPLY OPENING

UNIT

15–24 X B=X - 0.5 C=X + 1.75 23 3/4 ± 1/8 20

30–36 X B=X - 0.5 C=X + 1.75 27 3/4 ± 1/8 24

NOTES:

(SUPPLY GRILLE

SIZE

NOMINAL WIDTH)

9–18 X B=X - 0.5 C=X + 1.75 20 3/4 ± 1/8 17

1. All dimensions are in inches and typical for factory supplied grilles only.

2. Check dimensions for eld-supplied grilles because dimensions can be different.

OPTIONAL

FRAMING STUDS

(GRILLE

WIDTH)

(UNIT SUPPLY DUCT FLANGE

(Unit Supply Duct Flange

TO 1/2” DRYWALL FACE)

to 0.5-inch Drywall Face)

(GRILLE

FLANGE WIDTH)

Top View

TOP VIEW

2.25-inch Minimum

2-1/4” MIN.

(ROUGH IN

WIDTH)

(UNIT

WIDTH)

1/8” THICK FIELD SUPPLIED

1/8-inch Thick Field Supplied

GASKET TAPE

Gasket Tape Applied Around

APPLIED AROUND

Full Perimeter of Supply

FULL PERIMETER OF

Grilled with Volume Damper

SUPPLY GRILLE WITH

VOLUME DAMPER

FACTORY SUPPLIED

Factory Supplied

1” DUCT FLANGE

1-inch Duct Flange

DETAIL A

Detail A

FIGURE 16 - UNIT MOUNTED SUPPLY GRILLE INSTALLATION

LD19321

SECTION 1 - INSTALLATION

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

TABLE 5 - UNIT SUPPLY OPENING SIZES

HORIZONTAL OPENINGS

SINGLE HORIZONTAL DOUBLE HORIZONTAL

MODEL

NO TOP

OPENING

TOP OPENING

NO TOP

OPENING

TOP OPENING

9 14W x 12H 14W x 6H 14W x 8H Not Available Not Available 12 x 8

12 14W x 14H 14W x 6H 14W x 10H Not Available Not Available 12 x 8

15 16W x 14H 14W x 6H 14W x 10H Not Available 14W x 8H 14 x 12

18 Not Available 14W x 6H 14W x 12H 14W x 6H 14W x 10H 14 x 12

24 Not Available 14W x 10H 16W x 14H 14W x 6H 14W x 10H 14 x 12

30 Not Available 14W x 6H 20W x 14H 14W x 6H 16W x 12H 18 x 16

36 Not Available 14W x 10H Not Available 14W x 6H 16W x 14H 18 x 16

NOTES:

1. Unit mounted supply grilles are supplied as double-deection type.

2. Grilles for unequal airow applications (for example, unit mounted plus ducted supply) are provided with integral opposed blade dampers.

3. All grilles are supplied in standard appliance white painted nish.

4. Grilles are shipped loose for eld installation upon completion of cabinet/ductwork/drywall installation.

5. Top opening size does not change. When combined with any other discharge arrangement, it is included in determining horizontal opening grille size.

6. Openings marked Not Available result in face velocities outside the recommended 300–500 FPM range.

7. Hi-static blower option or single horizontal discharge openings with unit mounted supply grille are not recommended.

TRIPLE

HORIZONTAL

NO TOP

OPENING

TOP OPENING

TABLE 6 - UNIT SUPPLY FACE VELOCITY (FPM)

HORIZONTAL OPENINGS

MODEL

SINGLE HORIZONTAL DOUBLE HORIZONTAL

NO TOP

OPENING

TOP OPENING

NO TOP

OPENING

TOP OPENING

9 291 272 219 Not Available Not Available 510

12 316 344 221 Not Available Not Available 645

15 354 314 283 Not Available 236 471

18 Not Available 391 294 294 235 587

24 Not Available 397 273 364 291 729

30 Not Available 416 276 339 269 538

36 Not Available 410 Not Available 385 261 610

NOTES:

1. Tabulated face velocities do not account for supply grille free area factor. Face velocities at supply grille are higher depending on grille type.

2. Face velocities are based on the nominal rated CFM and feet per minute (FPM).

3. Face velocities are calculated by taking the average across all openings. Tabulated top opening face velocity is only for units with single top opening and no horizontal openings.

TRIPLE

HORIZONTAL

NO TOP

OPENING

TOP OPENING

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 1 - INSTALLATION

TOP MOUNTED FRESH AIR INTAKE

The optional fresh air intake provides a 4-inch round duct connection on top of the unit (see Figure 23 on page 31 for right and left hand version). The fresh air is discharged upstream of the direct expansion (DX) coil through the discharge collector box.

Do not allow incoming air to bypass the DX coil, otherwise, damage to the unit may occur.

Units can be selected with the fresh air opening located on the top left or right hand side for ease of installation.

It is recommended that applications requiring 10% or more outdoor air utilize a pressurized fresh air system. Unit cabinet static pressure at the RA opening is not designed to draw 10% or more in passive fresh air systems.

The fresh air duct inside the unit is insulated to protect the unit from condensation in the event of high humidity air. However excessively moist fresh air over prolonged periods can result in condensate inside unit or closet.

During transportation, handling or installation of the cabinet, excessive handling can cause an inner black plastic cover to come loose and jam the actuator, preventing the damper from opening.

During start-up, check that the damper is opening when the unit fan is running. It can take 20 seconds to fully open. If the damper opens, the unit is operating as intended. If the damper fails to open, the cause is likely a loose cover preventing actuator from rotating. Remove the actuator to service the damper.

Removing the Actuator

1. Remove the damper plate:

a. Look underneath the top of the RA flange to

notice the damper assembly.

b. Remove the seven fasteners holding the

damper plate (see Figure 19 on page 28).

c. Drop the plate and disconnect the quick-con-

nect terminals from the harness.

2. Remove the red cover from the actuator body (see Figure 18 on page 27).

To avoid condensate developing inside ducts and equipment, it is recommended to pretreat fresh air with a high humidity ratio before it enters the unit assembly through ERVs or make-up air units.

The unit comes with a 4-1/4 inch RA sleeve. Front supply openings come with a 4-1/4 inch supply plaster flange.

Top Mounted Fresh Air Intake with Motorized Damper

This include the same features as the top mounted fresh air intake option with the addition of a motorized damper assembly inside the discharge collector box similar (see Figure 23 on page 31).

The damper assembly can be easily removed for servicing (see Removing the Actuator on page 27). The motorized damper assembly opens during FAN ON operation. See Figure 28 on page 46 for the electrical schematic. For other control options, please contact the factory.

LD23557

FIGURE 17 - DAMPER PLATE FASTENERS

LD23558

FIGURE 18 - REMOVE THE RED COVER

SECTION 1 - INSTALLATION

LD23559

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

SYSTEM FLUSHING AND CLEANING

After the piping system is complete, and before connecting the refrigeration chassis, flush and clean the risers This ensures a proper start-up and continued efficient operation of the system (see Figure 20 on page

29).

Flushing the System

1. Ensure the supply and return riser shut-off valves are closed at each unit.

2. Using exible hoses or piping, connect the supply and return stub-outs in the unit located at the end of the riser run(s).

If the building has more than ten floors, connect the supply and return stub-outs in the last two units to divide the water flow and reduce pressure drop at the pump (see Figure 20 on page 29).

LD23560

FIGURE 19 - POSITION BLACK COVER

3. If the black cover is loose, position it in place and slide it back onto the actuator (see Figure 19 on page 28).

4. Secure the red cover back over the actuator assembly.

5. Ensure the plastic tabs are secured to the metal body bracket.

6. Connect the quick-connect terminals, and insert the damper assembly into the discharge collector box.

7. Fasten the assembly using the seven fasteners.

3. Open the shut-off valves in the units that have had the supply and return risers interconnected.

4. Fill the water circulation system with clean water from the make-up water supply. Ensure the air

vents are open during initial lling. Do not allow the system to overow.

5. Close the air vents, and start the circulating pump.

6. Ensure that all air is bled from the system by cracking each air vent.

Make-up water must be available in sufcient volume to replace the volume occupied by the air that is bled off.

7. When all the air is vented and the water is circulating under pressure, check the entire system for leaks. Repair any leaks as required.

8. Raise the temperature to approximately 85.0°F by setting the loop temperature controls. Visually check for any leaks that may have occurred due to the increased heat. Repair any leaks as required.

9. Open the drain at the lowest point in the system.

The make-up water ow rate must be

equal to the rate of the drain bleed.

FORM 145.18-IOM1

to chassis

Hose or piping

Riser

Return

Riser

ISSUE DATE: 8/30/2018

SECTION 1 - INSTALLATION

10. Continue to bleed the system until the water leaving the drain is clear, no less than 2 hours.

11. Completely drain the piping system.

Cleaning the System

1. After the initial ushing, chemically clean the system. Repeat the method in Flushing the System

on page 28 to rell the system and circulate the

cleaning solution.

It is recommended to use the services of a professional water treatment company for the type of solution to be used and the duration of the cleaning application.

2. Once the cleaning process is complete, shut off the circulating pump and completely drain the system.

3. Rell the system with clean water to prepare for refrigeration chassis connection and system startup.

It is recommended that a professional water treatment company perform ongoing maintenance of the water loop including chemical analysis and ushing, if necessary. The water loop testing should be performed at intervals recommended by the professional water treatment consultant.

Stub-outs to

Stub-outs

chassis

Hose or piping

connecting

supply & return

connecting supply

runouts

and return runouts

It is recommended that the water loop testing be performed at least once a year. Standard practice is once a month or quarterly.

The customer is responsible for completing adequate water loop maintenance over the lifespan of the units. Otherwise, damage to the units may occur.

Supply

Riser

Return

Riser

LD19685

FIGURE 20 - SYSTEM FLUSHING AND CLEANING

SECTION 1 - INSTALLATION

CABINET DIMENSIONS (INCHES)

MODEL A B C

09–12 17 8 12

15–24 20 12 14

30–36 24 16 18

1. Optional fresh air option comes with 2.5-inch RA ange.

2. Optional front supply opening comes with 2.5-inch duct ange.

3. All other openings come with standard 1-inch duct ange.

4. Left and right hand versions shown.

4-inch Ø Fresh Air Take-Off Intake

Left Hand Shown (Right Hand Opposite Side)

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

Front Supply Flange

(Optional)

Fresh Air Discharge

Collector Box

2.5-inch Return Air Flange

2.5 inches

Front Supply

(Optional)

Optional 24V Molex Connection for Surface Mount/ Remote Mounted Thermostat

Unit Switch Plate

3 inches

Ø 7/8-inch Power Entrance

Ø 7/8-inch Control Entrance (Knock-Out, Both Sides)

Riser Opening Knock-Outs (All Three Sides)

FIGURE 21 - FRESH AIR OPENING WITHOUT MOTORIZED DAMPER – LEFT AND RIGHT HAND UNIT SHOWN

LD27632

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 1 - INSTALLATION

CABINET DIMENSIONS (INCHES)

MODEL A B C

09–12 17 8 12

15–24 20 12 14

30–36 24 16 18

1. Optional fresh air option comes with 4.25-inch RA ange.

2. Optional front supply opening comes with 4.25-inch duct ange.

3. All other openings come with standard 1-inch duct ange.

4. Left and right hand versions shown.

4-inch Ø Left Hand Fresh Air Take-Off Intake

Optional Front Supply

(4.25-inch Flange)

Fresh Air Discharge

Collector Box

4.25-inch Return Air Flange

4-inch Ø Fresh Air

Take-Off Intake

4.25 inches

Optional Front Supply (4.25-in. Flange)

Fresh Air Discharge Collector Box

Optional 24V Molex Connection for Surface Mount/ Remote Mounted Thermostat

Unit Switch Plate

3 inches

Ø 7/8-inch Power Entrance

Ø 7/8-inch Control Entrance (Knock-Out, Both Sides)

Riser Opening

61-7/8 inches

Knock-Outs (All Three Sides)

FIGURE 22 - FRESH AIR OPENING WITH MOTORIZED DAMPER – LEFT AND RIGHT HAND UNIT SHOWN

LD27634

SECTION 1 - INSTALLATION

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

CHASSIS INSTALLATION

Prior to installation of the refrigeration chassis and connection to the supply and return risers, the entire water loop system must be ushed and cleaned. See System Flushing and Cleaning on page 28.

Do not apply sealing tape or pipe dope on NPSH style ttings.

Check that the female end gasket from the hose is not missing, has no visible damage, and is free of debris.

Always use a backup wrench when installing hoses.

Remove the inner service panel from the cabinet, and inspect the interior compartment for debris. Clear all debris and vacuum construction dust from the cabinet.

Locate the supply and return shut-off valves. Verify the following:

• The valves are closed.

• The type of hose kit ttings provided with the unit. Units shipped after June 2013 feature NPSH ttings (straight thread), while previous generation hose kits are NPT type (tapered thread). Refer to Riser Loop on page 16 for more information.

For Units with NPSH Valve Connection and Hose Sets

NPSH flexible connection hoses do not require any pipe dope or sealant tape. DO NOT ADD THREAD SEALANT OR PIPE DOPE TO NPSH FITTINGS. Connect the hoses to the NPSH fitting on the shut-off valves. Always use a backup wrench when tightening the hose to the valve fitting. Allow the hoses to hang free inside the cabinet.

Protect the chassis from physical damage, drywall dust, paint fumes, and any other construction contamination during installation.

Hoses must be hand tightened then further tightened no more than 1/4 turn. Do not apply excessive force.

Always use a backup wrench when tightening hoses to valves. Otherwise, damage to the valve solder joint can lead to property damage or serious injury.

Slide the chassis into place using the following steps:

1. Attach the NPSH hoses to the NPSHttings on the chassis stub-outs by projecting through the top of the compressor compartment access cover.

2. Use a backup wrench to prevent twisting of the copper water piping within the chassis assembly.

3. For chassis installation, see For Units with NPT

Style (Tapered Pipe Thread) Valve Connection and Hoses on page 32 .

For Units with NPT Style (Tapered Pipe Thread) Valve Connection and Hoses

Factory supplied NPT flexible connection hoses come with thread sealing compound pre-applied. NO ADDITIONAL THREAD SEALING TAPE SHOULD BE REQUIRED. Connect the hoses to the female pip thread fitting on the shut-off valves. Always use a backup wrench when tightening the hose to the valve fitting. Allow the hoses to hang free inside the cabinet.

Slide chassis into place using the following steps. A J-swivel adapter (supplied with the hose kit) comes with thread sealing compound pre-applied. NO ADDITIONAL THREAD SEALANT SHOULD BE REQUIRED.

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 1 - INSTALLATION

1. Thread the swivel adapters into the female pipe

thread ttings projecting through the top of the

compressor compartment access cover. To prevent twisting of the copper water piping in the chassis assembly, always use a backup wrench.

To minimize the possibility of damage to the chassis or cabinet and for maximum ease of installation, the use of a twowheeled dolly is strongly recommended.

Do not contact the nned coil face. Damage to the ns will result.

2. Lift chassis from the front of chassis (see Figure 22 on page 33).

3. Align chassis with the opening of the cabinet. Tilt

the chassis sufciently for the base of the chassis

to clear the mounting rails on the cabinet drain pan (see Figure 23 on page 33).

LD23565

FIGURE 24 - TILT THE CHASSIS

4. Insert the chassis midway into the opening of the cabinet. Lower the rear of the chassis until the base of the chassis touches the formed mounting rails in the cabinet drain pan (see Figure 24 on page 33).

LD23564

FIGURE 23 - LIFT THE CHASSIS FRONT

LD23566

FIGURE 25 - INSERT THE CHASSIS

Before fully inserting chassis, ensure wiring harness and or water hoses will not be pinched.

5. Pivot the chassis base on the front edge of the drain pan rails. Before fully inserting the chassis, ensure the wiring harness and water hoses cannot be pinched between the chassis and cabinet (see Figure 25 on page 34).

SECTION 1 - INSTALLATION

FIGURE 26 - PIVOT THE CHASSIS

LD23567

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

Do not apply excessive force when sliding chassis into cabinet.

6. Slide the chassis into the cabinet until at least 3/4 of the depth of the chassis is supported. The chassis should slide easily on the drain pan rails. DO NOT APPLY EXCESSIVE FORCE. Ensure that the chassis will not tip forward before removing dolly (see Figure 26 on page 34).

To avoid damage from clogged coil surfaces, plugged motor ventilation openings, and potential unit failure, DO NOT operate unit without compete enclosure,

supply grille, RA panel, and lter in place.

7. Connect the hoses to the chassis. Ensure that the hoses cannot be pinched once the chassis is slid into place.

FIGURE 27 - SLIDE THE CHASSIS

8. Without touching the anges on either side, ensure the chassis' alignment in the cabinet is centered in the cabinet opening (see Figure 27 on page 34).

9. Complete the electrical connections to the chassis using the two quick-connect mating plugs. The unit-mounted plug ends are located on the bottom of the control box.

LD23568

10. Remove the shipping cover from the face of the air-to-refrigerant coil.

11. Install the inner service panel and check that the foam gasket seal between the panel and the chassis is slightly compressed.

If necessary, pull the chassis forward slightly to ensure an adequate seal between the chassis and the service panel.

12. Install the air lter onto the face of the service

panel. Slide the lter upward into the top-retaining clip until the bottom of the lter can be

dropped onto the lower clip.

FIGURE 28 - CHECK THE CHASSIS

LD23569

13. Install service panel.

14. Install the RA panel into the drywall opening if not already installed. Refer to Acoustic Return Air (RA) Panel on page 20. Secure the panel into the drywall with six screws.

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 2 - OPERATION

Once the installation is complete and the system is cleaned and flushed, begin unit start-up. Open the supply and return shut-off valves at each unit, refill the system, and bleed off all air.

PRE-START-UP CHECKLIST

Before energizing the unit, perform the following checks and complete the Vertical Stacked Heat Pump Start-Up and Performance Checklist (Form 145.18- CL1) in compliance with warranty requirements.

The high voltage power supply is correct and in



accordance with the nameplate ratings.

The field wiring and circuit protection are the cor-



rect size.

The unit is electrically grounded.



The low voltage control wiring is correct per the



unit wiring diagram.

There is vibration isolation (for example, unit iso-



lation pad, flexible hoses).

The low-side or high-side pressure temperature



caps are secure and in place.

All the unit access panels are secure and in place.



The thermostat is in the OFF position.



INITIAL UNIT START-UP

During installation, testing, servicing, and troubleshooting of this product, it may be necessary to work with live electrical components. Failure to follow all electrical safety precautions when exposed to live electrical components could result in serious injury or death.

1. Close the disconnect switches on all units to provide line power.

2. Set the thermostat to the highest temperature setting.

3. Set the thermostat system switch to COOL and the fan control switch to AUTO. The compressor should NOT run.

4. Reduce the temperature control setting until the compressor and supply fan energize, with the following results:

• Water temperature leaving the heat exchanger is warmer than the entering water temperature (EWT) (approximately 9.0–12.0°F).

• The blower operation is smooth.

• The compressor and blower amps are within the nameplate data values.

The water flow is established and circulating



through all the units.

The ductwork (if required) is correctly sized, run,



taped, and insulated.

The indoor blower turns freely without rubbing.



If applicable, glycol fluid was added in the proper



mix to prevent freezing in closed system application.

Clean, properly sized air filters are in place.



The condensate drain pipe is firmly secured to



both the drain riser and the drain pan stub.

• The suction line is cool with no frost observed in the refrigerant circuit.

5. Turn the thermostat switch to the OFF position. The compressor and fan stop running and the reversing valve de-energizes.

6. To allow for pressure equalization, leave the unit off for approximately 5 minutes.

7. Turn the thermostat to the lowest setting.

8. Set the thermostat system switch to the HEAT position. The compressor should NOT run.

9. Adjust the temperature setting upward until the compressor and supply fan energize, with the following results after several minutes:

• Warm air is detected at the supply register.

• The water temperature decreases approximately 5.0–9.0°F across the heat exchanger.

SECTION 2 - OPERATION

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

• The blower and compressor operation are smooth with no frost observed in the refrigerant circuit.

10. Set the thermostat to maintain the desired space temperature.

11. Check all water connections for any leaks, including condensate drain hose connections.

SYSTEM LOOP TEMPERATURE

Loop temperatures affect unit performance, power consumption (efficiency), maintenance and reliability, and noise levels. High EWT in cooling mode above rated conditions of 86.0°F EWT increases power consumption and compressor noise levels. Sustained operation above 100°F EWT can increase maintenance costs, and increased compressor noise can affect occupancy comfort. The unit is designed to operate up to

110.0°F EWT for intermittent periods when high load conditions elevate system loop temperatures.

It is not recommended to set system loop temperatures at 110.0°F in case high load conditions cause supply loop temperatures to exceed 110.0°F EWT. Unit sound performance can be negatively impacted at high EWT.

During heating season, the maximum operating loop temperature is 90.0°F EWT. For optimal unit performance, it is recommended to maintain system loop temperatures at or above the rated conditions of 68.0°F EWT. If system loop temperatures are low and freezing the coaxial is possible, the system loop must contain a glycol fluid mixture that is adequate to prevent freezing. The minimum loop temperature with glycol mixture is 20.0°F EWT. Lower loop temperatures result in lower efficiency and heating capacity.

High system loop temperatures may nega-

tively affect unit performance, efciency,

maintenance and reliability, and noise levels.

FAN SPEED ADJUSTMENT

Multi-speed direct drive motors are used in all units as standard. Permanent split capacitor (PSC) fan motors have a minimum of three selectable speeds. EC motors (ECMs) have five speeds, however only two speeds are recommended and available for selection.

Optional ECMs increase operating efficiency by consuming fewer watts than standard PSC motors. Motors are factory programmed and cannot be re-programmed in the field. Each motor contains five low voltage speed taps. Two speed taps are used as standard.

Blower speed taps are factory set for optimum heating and cooling airflow ranges. See Table 8 on page 37 for factory blower speed settings and minimum operating airflow.

Operating the unit below the minimum

airow may result poor heating/cooling

performance and periodic unit lockout.

A unit mounted two-speed fan switch located on the electrical box cover allows the fan speed to switch from LOW and HIGH. This enables the fan speed to meet site conditions such as increased ductwork static pressure or the use of higher efficient filters.

Perform a test run on the installed system to ensure operation with sufficient heating and cooling airflow. Excessive ductwork static pressure results in an improper volume of airflow. High airflow volumes result in elevated noise levels and can affect occupancy comfort.

Lock all electrical power supply switches in the OFF position before servicing the unit. Failure to disconnect power supply may result in electrical shock or even death.

TABLE 7 - OPERATING LIMITS

COOLING HEATING

MINIMUM EWT 30.0°F 20.0°F

MAXIMUM EWT 110.0°F 90.0°F

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 2 - OPERATION

EXTERNAL STATIC PRESSURE (IN W.G.)

MIN.

RATED

MOTOR

0.0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

340 330 320 310 300 285 270 255 240 225 -

CFM

HIGH

SPEED

340 220

LOW 255 250 240 230 220 210 - - - - -

445 435 425 415 400 385 370 355 340 320 295

430 290

LOW 350 345 335 325 315 305 290 - - - -

HIGH

580 570 560 550 535 520 505 485 465 445 425

550 335

LOW 385 380 375 370 365 355 345 335 - - -

HIGH

700 690 675 660 635 615 595 575 550 525 495

685 430

LOW 450 445 440 435 430 425 - - - - -

HIGH

880 855 835 815 795 770 740 710 680 650 615

850 575

HIGH

LOW 715 710 705 690 670 650 630 605 580 - -

1115 1100 1075 1050 1020 990 960 930 895 850 800

1075 700

LOW 965 960 950 935 915 895 870 840 810 780 745

HIGH

1230 1200 1170 1140 111 0 1075 1040 1000 960 915 870

1220 840

LOW 1115 1100 1075 1050 1020 990 960 930 895 855 805

HIGH

EXTERNAL STATIC PRESSURE (IN W.G.)

MIN.

CFM

RATED

SPEED

MOTOR

0.0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8

375 370 360 350 340 330 315 300 285 265 245 220 - - - - -

340 220

HIGH

LOW 330 320 310 300 290 280 270 255 240 225 - - - - - - -

485 475 465 455 440 425 410 395 380 360 340 315 - - - - -

430 290

HIGH

665 650 635 615 595 575 555 540 520 500 475 450 420 395 370 340 -

750 735 715 695 675 655 630 605 580 555 525 495 465 435 - - -

990 970 950 930 910 890 865 845 820 795 770 740 710 680 650 615 575

1180 1170 1160 1145 1130 111 0 1090 1070 1050 1025 1000 970 940 910 875 840 800

1340 1320 1295 1270 1245 1220 1190 1160 1130 1100 1070 1040 1010 980 945 910 870

550 335

685 430

850 575

1075 700

1220 840

LOW 390 385 380 370 360 350 335 320 305 - - - - - - - -

LOW 580 570 560 550 535 520 505 485 465 445 425 400 375 350 - - -

LOW 670 655 640 625 605 585 560 535 510 485 460 435 - - - - -

LOW 795 785 775 760 745 730 715 695 675 655 630 605 580 - - - -

LOW 985 980 975 970 960 950 940 935 920 905 895 875 850 825 795 765 730

HIGH

LOW 1180 1170 1160 1145 1130 111 0 1090 1070 1050 1025 1000 970 940 910 875 840 800

SIZE

UNIT

TABLE 8 - PSC STANDARD BLOWER PERFORMANCE (CFM)

SIZE

UNIT

TABLE 9 - PSC HIGH STATIC BLOWER PERFORMANCE (CFM)

SECTION 2 - OPERATION

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

EXTERNAL STATIC PRESSURE (IN W.G.)

MIN.

RATED

MOTOR

0.0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

342 317 292 276 259 247 236 228 220 214 207

CFM

340 220

CFM

HIGH

SPEED

EXTERNAL STATIC PRESSURE (IN W.G.)

463 431 399 378 356 340 324 317 310 299 289

600 567 534 500 466 445 424 396 367 340 312

760 726 693 667 642 615 587 574 561 529 497

891 863 835 809 784 757 730 689 648 601 554

1131 1105 1079 1058 1037 1016 994 972 949 934 918

1265 1235 1206 1184 1163 1141 111 8 1085 1051 1008 965

430 290

550 335

685 430

850 575

1075 700

1220 840

LOW 278 252 226 212 198 189 180 - - - -

LOW 342 317 292 276 259 247 236 - - - -

LOW 495 447 399 372 346 307 268 - - - -

LOW 600 567 534 500 466 445 424 396 - - -

LOW 760 726 693 667 642 615 587 574 - - -

LOW 918 894 870 852 835 808 781 762 743 718 -

HIGH

LOW 1065 1037 1009 987 965 949 934 910 886 874 861

0.0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75

MIN.

CFM

RATED

SPEED

MOTOR

411 382 354 334 315 300 286 279 272 263 254 242 231 220 - -

340 220

LOW 342 317 292 276 259 247 236 228 220 - - - - - - -

HIGH

554 529 504 477 451 430 408 393 378 360 341 330 319 300 - -

430 290

LOW 463 431 399 378 356 340 324 317 310 299 290 - - - - -

HIGH

659 623 587 564 541 5 11 482 462 441 419 397 372 346 320 - -

550 335

HIGH

891 863 835 809 784 757 730 689 648 601 554 518 482 446 408 -

1002 971 940 912 883 854 826 800 774 749 724 698 671 643 615 586

1265 1235 1206 1184 1163 1141 1118 1085 1051 1008 965 913 861 808 756 701

1462 1418 1375 1331 1287 1241 1194 1153 111 2 1053 994 964 934 903 872 840

685 430

850 575

1075 700

1220 840

LOW 600 567 534 500 466 445 424 396 367 340 312 - - - - -

LOW 760 726 693 667 642 615 587 574 561 529 497 469 441 412 - -

LOW 866 827 789 762 735 708 682 659 636 612 587 571 - - - -

LOW 1065 1037 1009 987 965 949 934 910 886 874 861 839 818 - - -

HIGH

LOW 1265 1235 1206 1184 1163 1141 1118 1085 1051 1008 965 913 861 - - -

SIZE

UNIT

TABLE 10 - ECM STANDARD BLOWER PERFORMANCE (CFM)

SIZE

UNIT

TABLE 11 - ECM HIGH STATIC BLOWER PERFORMANCE (CFM)

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 2 - OPERATION

EXTERNAL STATIC PRESSURE (IN W.G.)

MIN.

RATED

MOTOR

0.0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75

278 252 226 212 198 189 180 - - - - - - - - -

CFM

SPEED

278 252 226 212 198 189 180 - - - - - - - - -

340 180

2 342 317 292 276 259 247 236 228 220 214 207 - - - - -

3 411 382 354 334 315 300 286 279 272 263 254 242 231 220 - -

4 463 431 399 378 356 340 324 317 310 299 290 - - - - -

5 554 529 504 477 451 430 408 393 378 360 341 330 319 300 - -121

430 236

2 342 317 292 276 259 247 236 - - - - - - - - -

3 411 382 354 334 315 300 286 279 272 263 254 242 231 220 - -

495 447 399 372 346 307 268 - - - - - - - - -

550 268

4 463 431 399 378 356 340 324 317 310 299 289 - - - - -

5 554 529 504 477 451 430 408 393 378 360 341 330 319 300 - -151

2 600 567 534 500 466 445 424 396 367 340 312 - - - - -

3 659 623 587 564 541 511 482 462 441 419 397 372 346 320 - -

495 447 399 372 346 307 268 - - - - - - - - -

685 396

4 760 726 693 667 642 615 587 574 561 529 497 469 441 412 - -

5 891 863 835 809 784 757 730 689 648 601 554 518 482 446 408 -181

2 600 567 534 500 466 445 424 396 367 340 312 - - - - -

3 659 623 587 564 541 511 482 462 441 419 397 372 346 320 - -

659 623 587 564 541 511 482 462 441 419 397 372 346 320 - -

850 574

4 760 726 693 667 642 615 587 574 561 529 497 469 441 412 - -

5 891 863 835 809 784 757 730 689 648 601 554 518 482 446 408 -241

2 760 726 693 667 642 615 587 574 - - - - - - - -

3 866 827 789 762 735 708 682 659 636 612 587 571 - - - -

918 894 870 852 835 808 781 762 743 718 - - - - - -

1075 718

4 891 863 835 809 784 757 730 689 648 601 554 - - - - -

5 1002 971 940 912 883 854 826 800 774 749 724 698 671 643 615 586301

2 1065 1037 1009 987 965 949 934 910 886 874 861 - - - - -

3 1131 1105 1079 1058 1037 1016 994 972 949 934 918 - - - - -

4 1265 1235 1206 1184 1163 1141 1118 1085 1051 1008 965 913 861 808 756 701

5 1462 1418 1375 1331 1287 1241 1194 1153 1112 1053 994 964 934 903 872 840361

918 894 870 852 835 808 781 762 743 718 - - - - - -

1220 861

2 1065 1037 1009 987 965 949 934 910 886 874 861 - - - - -

3 1131 1105 1079 1058 1037 1016 994 972 949 934 918 - - - - -

4 1265 1235 1206 1184 1163 1141 1118 1085 1051 1008 965 913 861 808 756 701

5 1462 1418 1375 1331 1287 1241 1194 1153 1112 1053 994 964 934 903 872 840

SIZE

UNIT

TABLE 12 - ECM BLOWER PERFORMANCE - ALL SPEED TAPS (CFM)

1. All airow ratings are at lowest voltage rating of dual rating (for example, 208 volt).

2. Airow ratings include resistance of wet coil and clean air lters.

NOTES

SECTION 2 - OPERATION

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

UNIT CONTROLS

The control system microprocessor board is specifically designed for water source heat pump operation. The control system interfaces with a conventional type thermostat.

• The unit is complete with a self-contained lowvoltage control circuit.

• The unit incorporates a lockout circuit that provides reset capability from a hard lockout at the space thermostat or base unit if any of the following standard safety devices trip and shut off the compressor:

• Low pressure limit switch (loss of charge)

• High pressure limit switch

• Freeze protection switch (unit shutdown on low water temperature)

• Condensate overflow switch

• The unit operates with conventional thermostat designs and has a low voltage terminal strip for easy hook-up.

• Unit control board has on-board diagnostics and fault code display.

• Standard controls include anti-short cycle and low voltage protection.

• The control board monitors each refrigerant safety switch independently.

• The control board has a random start feature.

• The control board retains the last ve fault codes in nonvolatile memory that cannot be lost in the event of a power loss.

Sequence of Operation

The room thermostat makes a circuit between R and Y1 for cooling.

The call passes to the unit microprocessor control that determines whether the requested operation is available and if so, which components to energize.

If at any time there is a call for both heating and cooling, the heating operation is performed. Heating always takes priority. If cooling mode is operating, it halts and ends the call for cooling.

Continuous Blower

With the room thermostat fan switch set to AUTO and the system switch set to either AUTO or HEAT, the blower energizes whenever a cooling or heating operation is requested. The blower energizes after any specified delay associated with the operation.

The indoor blower energizes for a minimum runtime of 30 seconds. Additionally, the indoor blower delays for 10 seconds between operations.

When the room thermostat calls for cooling, the lowvoltage control circuit completes from R to Y1 and G. The compressor and fan motor energize. After completing the specified fan on delay for cooling, the microprocessor control energizes the blower motor.

Once the room thermostat has been satisfied, it deenergizes Y1. If the compressor satisfies its minimum runtime, the compressor and fan de-energize. Otherwise, the unit operates the cooling system until the minimum runtime for the compressor completes. After the compressor de-energizes and the fan off delay for cooling elapses, the blower stops.

To be available, a compressor must not be locked-out because of a high pressure limit switch, low pressure limit switch, condensate overflow switch, or a freezestat trip. The anti-short cycle delay (ASCD) must elapse.

Safety Control Reset

All VPCS heat pumps are furnished with a high pressure limit switch, a low pressure limit switch, low water temperature freeze protection switch, and condensate overflow switch to prevent compressor operation during abnormal conditions.

If any of these safety devices activate, a lockout relay circuit engages. The circuit interrupts heating and cooling operation even if the control contacts automatically re-close.

For heating, the room thermostat makes a circuit between R and W1. The microprocessor control energizes the compressor and fan, enabling the unit to run in heating mode.

This microprocessor driven lockout circuit must be manually reset. Reset by momentarily moving the thermostat control (system) switch to OFF, then back to HEAT or COOL (or AUTO).

The lockout circuit can also be reset by opening and closing the unit mounted disconnect switch.

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 2 - OPERATION

If the unit must be reset more than twice on consecutive operating cycles, check

the unit for a dirty lter, abnormal EWT, inadequate or excessive water ow, or

refrigerant circuit malfunction. If the unit continues to cutout, contact a trained service technician.

Operation Errors

Each refrigerant system is monitored for operation outside of the intended parameters. Errors are handled as described below. All system errors override minimum runtimes for compressors.

High Pressure Limit Switch

If a high pressure limit switch opens, the microprocessor control de-energizes the compressor, initiates the ASCD, and stops the unit fans (soft lockout). If a call for cooling or heating is still present at the conclusion of the ASCD, the microprocessor control re-energizes the compressor and unit fan.

If a high pressure limit switch opens three times within 2 hours of operation, the microprocessor control permanently locks out the system compressor, requiring a manual reset of the system (a hard lockout). To manually reset, either de-energize the 24-volt power to the unit or turn the room thermostat to OFF, then back to either HEAT or COOL as required. The microprocessor control flashes a fault code indicating the high pressure lockout (see Table 13 on page 42).

Low Pressure Limit Switch

The microprocessor does not monitor the low pressure limit switch during the initial 30 seconds of compressor operation. For the following 30 seconds, the microprocessor control monitors the low pressure limit switch to ensure it closes. If the low pressure limit switch fails to close after the 30 second monitoring phase, the microprocessor control de-energizes the compressor, initiates the ASCD, and stops the fan (a soft lockout).

If a low pressure limit switch opens three times within 1 hour of operation, the microprocessor control board locks out the compressor (a hard lockout) and flashes a fault code (see Table 13 on page 42).

Freeze-Stat

If a freeze-stat opens, the microprocessor control deenergizes the compressor and initiates the ASCD. If a call for cooling or heating is still present after the ASCD, the microprocessor control re-energizes the halted compressor.

Condensate Overow Switch

A condensate overflow fault occurs if the condensate overflow switch opens continuously for 30 seconds. The compressor shuts down regardless of the minimum runtime, and alarm 15 sets. The fan continues operating in its current state.

The microprocessor control logs the first incident per compressor request. Lockout occurs on the second fault occurrence within a request cycle, requiring reset or power cycling. If the compressor request is removed, the fault occurrence counter resets to zero. When lockouts are removed, the alarm resets.

Safety Controls

The microprocessor control monitors the following inputs:

1. A suction line freeze-stat to protect against low leaving water temperatures (LWTs) (opens at

34.0°F and resets at 48.0°F).

2. A high pressure limit switch to protect against excessive discharge pressures (opens at 600 psig ± 25 psig).

3. A low pressure limit switch to protect against loss of refrigerant charge (opens at 55 psig ± 5 psig).

4. A condensate overow switch to protect against

condensate overow.

Once the low pressure limit switch is proven (closes during the 30 second monitor period), the microprocessor control monitors the low pressure limit switch for any openings. If the low pressure limit switch opens for more than 5 seconds, the microprocessor control de-energizes the compressor, initiates the ASCD, and stops the compressor (a soft lockout).

If the call for cooling is still present after the ASCD, the microprocessor control re-energizes the compressor.

Coaxial Freeze Protection Setpoint

The field can select the coaxial freeze protection setpoint. The unit uses a suction line freeze-stat factory setpoint for compressor lockout when the LWT drops below 35.0°F (resets at 48.0°F). To lower the setpoint for low temperature heating applications with an adequate water-antifreeze solution, unplug the freezestat sensor located at P6 on the microprocessor control board, and plug in the (pink) jumper attached to the existing harness.

SECTION 2 - OPERATION

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

Installing the jumper bypasses the freeze-stat, enabling heating operation with a leaving glycol fluid mixture temperature below 35.0°F. Use the jumper only in low water applications with adequate antifreeze protection, otherwise damage can occur.

Random Start

The random start function upon power up imposes time delay of 4 minutes plus a random delay of 1–64 seconds. A combination of the following determine the random number generator seed:

• A xed seed programmed at the factory

• The serial number

• The model number

• The hours of the unit's compressor runtime

Compressor Protection

In addition to the external pressure switches, the compressor also has inherent internal protection. If there is an abnormal temperature rise in a compressor, the protector opens to shut down the compressor. The microprocessor control incorporates features to minimize compressor wear and damage. The control uses an ASCD to prevent compressor operation too soon after its previous run. Additionally, a minimum runtime is imposed any time a compressor is energized. The ASCD initiates on unit start-up and on any compressor reset or lockout.

Microprocessor Control Unit Flash Codes

The microprocessor control uses various flash codes to aid in troubleshooting. The flash codes are distinguished by a short on and off cycle (approximately 200ms on and 200ms off).

During normal operation, to show that the microprocessor correctly functions, the control boards flash for 1 second on, 1 second off, also known as a heart beat. Do not confuse this with an error flash code. To prevent confusion, a 1-flash fault code is not used. For a list of all flash codes, see Table 13 on page 42.

Last Error

When this button is pressed and released one time within 5 seconds, it flashes the last five fault codes on the board’s LED. The most recent alarm is shown first and the oldest alarm is shown last.

Test Reset

When this button is pressed and released one time within 5 seconds, any ASCD is bypassed for one cycle.

Comm Setup

If the board is to be networked with other units, this button is used to set the network address.

The first time the button is pressed within 5 seconds, it scans the bus, assigns itself the first available address (starts at 2), and then flashes that address once.

Pressing the button two times within 5 seconds causes the control to flash the address.

TABLE 13 - FLASH CODES

FLASH CODES DESCRIPTION

On Steady Control failure – replace control

Heart Beat Normal operation

2 Flashes Control waiting on ASCD

3 Flashes HPS1 - Compressor lockout

5 Flashes LPS1 - Compressor lockout

13 Flashes Compressor held off due to low voltage

14 Flashes

15 Flashes

16 Flashes

NOTES

1. These ash codes do not represent alarms.

EEPROM storage failure (control failure)

Condensate overow switch -

compressor lockout

Coaxial freeze thermostat compressor lockout

Communication

The communication protocol is Modbus™ using the RTU method of packet framing at 19200-baud rate.

Current alarms or active restrictions are flashed on the microprocessor control LED.

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

SECTION 3 - MAINTENANCE

Unit maintenance is simplified by the following preventive suggestions:

1. At least once a month, visually inspect the unit. Pay special attention to hose assemblies. Note any signs of hose deterioration or cracking. Immediately attend to any sign of minor leakage.

2. At least once every three months, perform lter maintenance to ensure proper operation of the

equipment. Inspect the lters and replace when

visible dirt buildup is evident.

To avoid fouled machinery and extensive unit clean up, DO NOT operate units

without lters in place or use the unit as a

temporary cooling/heating source during construction.

3. Every three months, inspect the condensate drain pan for algae growth and mineral buildup. Excessive algae or mineral deposits in the drain pan or

drain line can result in condensate overow and

unpleasant mildew odors.

4. Annually check the fan motor and blower assembly. All units employ permanently lubricated fan motors. DO NOT OIL FAN MOTORS. Vacuum any accumulation of dirt from the motor ventilation slots and the blower wheel.

5. Annually check the contactors and relays within the control panel. Inspect the panel for any signs of damage caused by overheated contacts or temperature change to the wiring. Check the terminals for tightness.

6. Annually conduct an amperage check on the compressor and fan motor. An amperage draw more than 10% higher than the nameplate values can

indicate heat exchanger fouling, low water ow,

or premature physical motor failure.

7. At least once a year, inspect the air-to-refrigerant heat exchanger surface. A dirty or partially clogged coil can signicantly reduce operating capacity and can result in serious equipment problems. If the coils appear dirty, clean them using mild detergent or a commercial coil-cleaning agent.

8. Inspect hoses, valves, and connections for water leaks. For hose connection leaks, inspect rubber hose gaskets and replace them as required.

SECTION 3 - MAINTENANCE

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

THIS PAGE INTENTIONALLY LEFT BLANK.

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

APPENDIX

FIGURE 29 - PSC MOTOR WIRING DIAGRAM

LD23571

APPENDIX

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

FIGURE 30 - ECM WIRING DIAGRAM

LD23572

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

APPENDIX

FIGURE 31 - CONTINUOUS FAN WITH ECM WIRING DIAGRAM

LD27633

APPENDIX

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

FIGURE 32 - MOTORIZED DAMPER ECM WIRING DIAGRAM

LD23574

FORM 145.18-IOM1

Please attach a sketch of the duct(s) run with this form when

VERTICAL STACKED WATER SOURCE HEAT PUMP

HEATING AND COOLING DATA RECORD SHEET

INDOOR PACKAGED EQUIPMENT

Form 145.18-CL2

ISSUE DATE: 8/30/2018

APPENDIX

HEATING AND COOLING DATA RECORD SHEET

JOB NAME: _____________________________________

JOB ADDRESS: _________________________________

______________________________________________

INSTALLER: ____________________________________

SPECIAL QUOTES/OPTIONS (YES/NO): _____________

CABINET MODEL #: _____________________________

CHASSIS MODEL #: _____________________________

OPERATING MODE (HEATING/COOLING): ___________

DUCTED/FREE DISCHARGE: ______________________

LENGTH, WIDTH, HEIGHT OF DUCT(S): _____________

SUPPLY DUCT EXTERNAL STATIC PRESSURE (iwg):

______________________________________________

UNIT INFORMATION

JOB #: _________________________________________

DATE: _________________________________________

INSTALLER'S ADDRESS: _________________________

_______________________________________________

SERVICE TECHNICIAN: __________________________

CABINET SERIAL #: _____________________________

CHASSIS SERIAL #: _____________________________

LOCATION / ROOM # OF HEAT PUMP: ______________

FLASH CODES OR FAULTS FROM CONTROL BOARD:

_______________________________________________

DOES UNIT HAVE AN INTERNAL PUMP: (YES/NO): ____

SUPPLY AIRFLOW MEASUREMENT (CFM): _________

returned to the Applied Ducted Systems PTS team.

Air Coil

Airflow Airflow

Coil Inlet (Dry Bulb)

Coil Outlet (Dry Bulb) Coil Inlet (Wet Bulb) Coil Outlet (Wet Bulb) Air Relative Humidity (%)

Reversing Valve

°F °F

°F

Coaxial

Coil

°F °F

Expansion Valve

°F

Liquid Line

Water In

°F

psi

Water Flow:

Water Out

°F

psi

GPM

Compressor Amp Draw: L1

Compressor Voltage: L1

*May only need L1 and L2 lines

Internal Pump Voltage: L1 Internal Pump Amp Draw: L1

*If installed

Fan Motor Speed:

Fan Amp Draw: L1

Fan Voltage: L1

*May only need L1 and L2 lines

°F

psi = SAT °F

Compressor

Suction

Discharge

°F

psi = SAT °F

Superheat

Sub-cooling

APPENDIX

NOTES

Air Coil

Airflow Airflow

Coil Inlet (Dry Bulb)

Coil Outlet (Dry Bulb) Coil Inlet (Wet Bulb) Coil Outlet (Wet Bulb) Air Relative Humidity (%)

°F °F

°F

Expansion Valve

Coaxial

Coil

Reversing Valve

Internal Pump Voltage: L1

Internal Pump Amp Draw: L1

*If installed

Fan Amp Draw: L1

*May only need L1 and L2 lines

Fan Voltage: L1

Fan Motor Speed:

°F

Liquid Line

°F

Water In

psi

°F

Water Out

psi

Water Flow:

GPM

Compressor Amp Draw: L1

*May only need L1 and L2 lines

Compressor Voltage: L1

°F

psi = SAT °F

Superheat Sub-cooling

Suction

Discharge

Compressor

°F

psi = SAT °F

FORM 145.18-IOM1

ISSUE DATE: 8/30/2018

FORM 145.18-IOM1 ISSUE DATE: 8/30/2018

R-410A QUICK REFERENCE GUIDE

See Section 1 - Installation for specific installation requirements.

• R-410A refrigerant operates at 50–70% higher pressures than R-22 refrigerant. Ensure that servicing equipment and replacement components are designed to operate with R-410A refrigerant.

• R-410A refrigerant cylinders are rose colored.

• Recovery cylinder service pressure rating must be 400 psig (DOT 4BA400 or DOT BW400).

• Recovery equipment must be rated for R-410A refrigerant.

• Do not use R-410A service equipment on R-22 systems. All hoses, gauges, recovery cylinders, charging cylinders, and recovery equipment must be dedicated for use on R-410A systems only.

• Manifold sets must be at least 700 psig high side and 180 psig low side with a 550 psig retard.

• All hoses must have a service pressure rating of 800 psig.

• Leak detectors, must be designed to detect HFC refrigerants.

• Systems must be charged with refrigerant. Use a commercial type metering device in the manifold hose.

• R-410A refrigerant can only be used with polyester (POE) type oils.

• POE type oils rapidly absorb moisture from the atmosphere.

• Vacuum pumps cannot remove moisture from POE type oils.

• Do not use liquid line driers with a working pressure rating less than 600 psig.

• Do not install suction line driers in the liquid line.

• A liquid line drier is required on every unit.

• Do not use an R-22 TXV. If a TXV is necessary, it must be an R-410A TXV.

• Never open the system to atmosphere when under vacuum.

• If the system must be opened for service, evacuate the system, then break the vacuum with dry nitro-

gen and replace the lter driers.

Form 145.18-IOM1 (818) Issue Date: August 30, 2018 Supersedes: 145.18-IOM1 (115)

Johnson Controls VB30, VB24, VB36, VM09, VM12 Installation, Operation And Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual