McQuay VHC009 Installation Manual

Installation & Maintenance Manual

Vertical Stack Water Source Heat Pumps

Model VHC Vertical Stack Chassis Model VHF Vertical Stack Cabinet Unit Sizes 009 – 036 / R-410A Refrigerant

IM 986-2

Group: WSHP Part Number: 669646403 Date: May 2012

Page 2 of 48 / IM 986-2

Table of Contents

Model Nomenclature ............................ 4-5

Vertical Stack Model VHF (Cabinet)...............4

Vertical Stack Model VHC (Chassis)...............5

Receiving, Storage & Handling ................... 6-7

Disassembling Upper & Lower Cabinet Sections..... 7-8

Dimensional Data .............................. 9-10

Unit Size 009-018 ..............................9

Unit Size 021-036 .............................10

Pre-Installation Considerations ....................11

Cabinet Configurations...........................12

Typical Framing & Discharge Arrangements.........13

Critical Dimensions ..............................14

Framing Locations to Unit Openings..............14

Vertical Riser Stub-Outs Locations to

Unit Knockouts...............................14

Return Air Grille/Panel Dimensions...............15

Installation Procedure.........................16-26

Risers & Cabinet........................... 16-17

Cleaning & Flushing Water System............ 17-19

Power Wiring From Building to Unit...........19-20

Connect Condensate Drain Hose to Drain Stubout ...20

Water Connections ......................... 20-21

Installing Unit Chassis .........................22

Making Cabinet to Chassis Wiring Connections . . . . . 22

Installing & Wiring the Remote Control Node ......23

Installing the Return Air Grille/Panel..............24

Installing the Discharge Air Diffuser ..............25

Twin Units Installation .........................26

Controls..................................... 27-34

MicroTech III Unit Controller ................... 27

Remote Reset Feature ..........................27

MicroTech III Controller Terminal Locations

& Descriptions ............................ 28-29

I/O Expansion Module .........................30

MicroTech III Controller with Lon Module.........31

MicroTech III Controller with BACnet Module .. 32-33 MicroTech III Controller with Lon Module on

Board Diagram ...............................34

Typical Wiring Diagrams ...................... 35-38

MicroTech III Unit Controller, 2-Speed Fan (Toggle or

Thermostat), PSC Motor 208-230/60Hz/1-Phase,

Unit Sizes 009-018............................35

MicroTech III Unit Controller, 2-Speed Fan (Toggle or

Thermostat), PSC Motor 265-277/60Hz/1-Phase,

Unit Sizes 009-036............................36

MicroTech III Unit Controller, 2-Speed Fan (Toggle or

Thermostat), X13 Motor 208-230/60Hz/1-Phase,

Unit Sizes 021-036............................37

MicroTech III Unit Controller, 2-Speed Fan (Toggle or

Thermostat), X13 Motor 265-277/60Hz/1-Phase,

Unit Sizes 021-036............................38

Start-up........................................39

Additional Accessories (General) ................ 39-43

Thermostats & Temperature Sensors ........... 39-43

Troubleshooting .............................. 44-47

The in and outs of R-410A ......................44

Refrigeration Circuit...........................45

The Water Source Heat Pump Unit ...............46

General Use & Information .....................47

IM 986-2 / Page 3 of 48

Model Nomenclature

Vertical Stack Water Source Heat Pump – Cabinet (VHF)

W VHF 1 009 B E DP LRY F 12 S 088

Product Category

W - WSHP

Product Code

VHF - Cabinet

Design Series

1 2

Unit Size - Tons

009 - 3/4 Ton 012 - 1 Ton 015 - 1-1/4 Ton 018 - 1-1/2 Ton 021 - 1-3/4 Ton 024 - 2 Ton 030 - 2-1/2 Ton 036 - 3 Ton

Controls

B - MicroTech III C - MicroTech III With LonWorks D - MicroTech III With BACnet

Voltage

A - 115/60/1 ph E - 208-230/60/1 ph J - 265-277/60/1 ph

Secondary Drain Pan

GL - Standard Galvanized Steel SS - Stainless Steel

Cabinet Type

080 - 80" Cabinet Height 088 - 88" Cabinet Height 092 - 92" Cabinet Height 096 - 96" Cabinet Height

Filter Option

S - Standard 1" Throwaway P - 2" Pleated (Merv 7) Y - None

Blower Motor

12 - 2-Speed PSC Motor 32 - ECM 2-speed 2.3 Motor 33 - ECM 2-speed X13 Motor

Power Connection

F - Fused Disconnect N - Non-Fused Disconnect H - HACR Breaker

Supply Air Conguration

LYY - Single Supply Outlet, Left Side RYY - Single Supply Outlet, Right Side FYY - Single Supply Outlet, Front Side BYY - Single Back Side Supply Outlet TYY - Single Top Supply Outlet LFY - Double Supply, Left Side and Front Side LRY - Double Supply, Left Side and Right Side LBY - Double Supply, Left Side and Back Side RFY - Double Supply, Right Side and Front Side RBY - Double Supply, Right Side and Back Side BFY - Double Supply, Back Side and Front Side LTY - Double Supply, Left Side and Top RTY - Double Supply, Right Side and Top BTY - Double Supply, Back Side and Top FTY - Double Supply, Front Side and Top LFT - Triple Supply, Left Side, Front Side and Top LRT - Triple Supply, Left Side, Right Side and Top FRT - Triple Supply, Front Side, Right Side and Top FBT - Triple Supply, Front Side, Back Side and Top BRT - Triple Supply, Back Side, Right Side and Top BLT - Triple Supply, Back Side, Left Side and Top YYY - Closed Supply Plenum for eld modication

Page 4 of 48 / IM 986-2

Note: For illustration purposes only. Not all options avail-

able with all models.

Please consult McQuay Sales Representative for

specic availability.

Model Nomenclature

Vertical Stack Water Source Heat Pump – Chassis (VHC)

W VHC 1 012 B E A C AMY C

Product Category

W - WSHP

Product Code

VHC - Chassis

Design Series

1 2

Unit Size - Tons

009 - 3/4 Ton 012 - 1 Ton 015 - 1-1/ 4 Ton 018 - 1-1/2 Ton 021 - 1-3/4 Ton 024 - 2 Ton 030 - 2-1/2 Ton 036 - 3 Ton

Controls

B - MicroTech III C - MicroTech III With L D - MicroTech III With BACnet

onWorks

Voltage

A - 115/60/1 ph E - 208-230/60/1 ph J - 265-277/60/1 ph

Coax Coil Construction

C - Copper Inner - Steel Outer S - CuproNickel Inner - Steel Outer X - Special

Chassis Construction

AYY - Standard Fiberglass Insulation EYY - IAQ - Cellular Insulation AMY - Standard w/Compressor Blanket EMY - IAQ w/Compressor Blanket AYC - Standard w/E-Coated Air Coil EYC - IAQ - Cellular w/E-Coated Air Coil AMC - Standard w/Comp Blanket and Coated Air Coil EMC - IAQ w/Comp Blanket and Coated Air Coil

Motorized 2-Way Isolation Valve

C - 2-Way Motorized 1/2" Iso-Valve, General Close-Off Pressure N.C. (Normally Closed) V - 2-Way Motorized 1/2" Iso-Valve, General Close-Off Pressure N.O. (Normally Open) H - 2-Way Motorized 1/2" Iso-Valve, High Close-Off Pressure N.C. (Normally Closed) D - 2-Way Motorized 3/4" Iso-Valve, General Close-Off Pressure N.C. (Normally Closed) K - 2-Way Motorized 3/4" Iso-Valve, General Close-Off Pressure N.O. (Normally Open) J - 2-Way Motorized 3/4" Iso-Valve, High Close-Off Pressure N.C. (Normally Closed) Y - None X - Special

Refrigerant

A - R-410A X - Special

Note: For illustration purposes only. Not all options

available with all models.

Please consult McQuay Sales Representative

for specic availability.

IM 986-2 / Page 5 of 48

Receiving and Storage

Upon receipt of the equipment, check the carton and pallets for visible damage. Make a notation on the shipper’s delivery ticket before signing. If there is any evidence of rough handling, immediately open the cartons to check for concealed damage. If any damage is found, notify the carrier within 48 hours to establish your claim and request their inspection and a report. The Warranty Claims Department should then be contacted.

IMPORTANT

This product was carefully packed and thoroughly inspected before leaving the factory. Responsibility for its safe delivery was assumed by the carrier upon acceptance of the shipment. Claims for loss or damage sustained in transit must therefore be made upon the carrier as follows:

VISIBLE LOSS OR DAMAGE

Any external evidence of loss or damage must be noted on the freight bill or carrier’s receipt, and signed by the carrier’s agent. Failure to adequately describe such external evidence of loss or damage may result in the carrier’s refusal to honor a damage claim. The form required to le such a claim will be supplied by the carrier.

CONCEALED LOSS OR DAMAGE

Concealed loss or damage means loss or damage which does not become apparent until the product has been unpacked. The contents may be damaged in transit due to rough handling even though the carton may not show external damages. When the damage is discovered upon unpacking, make a written request for inspection by the carrier’s agent within fteen (15) days of the delivery date and le a claim with the carrier.

Cabinet Skid (4-units per skid)

Never stack cabinets higher than as illustrated in Figure 1 at any time during transportation or storage or damage may occur.

Figure 1: Unit Cabinet Skid as Shipped and Stored

Chassis Skid (4 per skid, stored two skids high)

Never stack chassis´ higher than as illustrated in Figure 2 at any time during transportation or storage or damage

may occur.

Figure 2: Chassis Skids Stacked 2 High Maximum

For storing, each carton is marked with “up” arrows.

Storage and Operating Environment

Temporary storage at the job site must be indoor, completely sheltered from rain, snow, etc. High or low temperatures naturally associated with weather patterns will not harm the units. Excessively high temperatures, 140°F (60°C) and higher, may deteriorate certain plastic materials and cause permanent damage.

Storage Temperature:

-40ºF (-40ºC) to 140ºF (60ºC)

Operating Temperature:

32ºF (0ºC) to 140ºF (60ºC)

Humidity:

10%RH to 90%RH Non-condensing

PCB Material and Flammability Rating:

IPC/ANSI FR or CEM material as required to meet UL

94V-0 ammability rating.

Page 6 of 48 / IM 986-2

Handling

Carefully check items against the bills of lading to verify all crates and cartons have been received. Cabinets and Chassis normally ship four to a pallet.

Carefully inspect all units for shipping damage. Report

damage immediately to the carrier and le a claim.

Check the unit data plate to be sure the unit electrical agrees with the power supply available (Figures 3).

Figure 3: Unit Components & Descriptions - Received as Assembled Cabinet with Chassis Shipped Separate

Unit Data Plate

Stub-out Seals

DO NOT handle units by the riser piping. Riser clamps hold the riser in position; they are not designed to support the cabinet weight. The clamps are removed after the unit is installed.

Unit cabinets are factory assembled and wired and have individual thermostat control capability. They are installed by stacking one unit on top of the other. While installing, prevent dirt and other foreign matter from entering the risers and plugging lines or valves. See "Cleaning & Flushing Water System" on page 16.

General Information

McQuay Vertical Stack units are designed for use in

multiple oor apartments, ofce buildings, hotels,

nursing homes and other similar applications. They

require a minimum amount of oor space and are

designed for multiple discharge arrangement. Installation and maintenance must follow accepted

industry practices as described in the ASHRAE Handbook, the National Electric Code, and other applicable standards. Install this equipment in accordance with regulations of authorities having jurisdiction and with all applicable codes.

WARNING

Installation and maintenance are to be performed by qualied personnel who are familiar with local codes and regulations, and experienced with this type of equipment.

WARNING

The installer must determine and follow all applicable codes and regulations. This equipment presents hazards of electricity, rotating parts, sharp edges, heat and weight. Failure to read and follow these instructions can result in property damage, severe personal injury or death. This equipment must be installed by experienced, trained personnel only.

Chassis

Data Plate

Component Descriptions (Assembled Cabinet)

1. Cabinet assembly complete (without chassis) 1a. Pipe riser sets (inlet, outlet and condensate) 1b. Inner front panel and lter bracket

2. Cooling and heating chassis (shipped separate)

3. Return air grille/panel (accessory)

4. Double-deection diffuser (accessory)

CAUTION

Sharp metal edges are a hazard, use care when servicing to avoid contact with them.

IM 986-2 / Page 7 of 48

Disassembling Upper and Lower Cabinet Sections

The Vertical Stack unit cabinet ships completely assembled. If required, it may be disassembled into two (2) sections (upper-fan/discharge cabinet) and (lower chassis/return air cabinet) to make it easier to handle. To disassemble, do the following.

1. Remove risers (if received attached).

2. Remove the three (bottom row) screws on the back of the unit as shown in Figure 4.

Note: Retain all screws for later use to reassemble unit in reverse order as described in steps 1-7. Number of screws will vary depending on unit size.

3. Carefully lay the unit down on its back and remove the remaining eight (8) screws on the left and right side of the cabinet (Figure 5).

5. Remove the ten (10) screws and lift off the front

panel/lter rack to gain access to the cabinet interior

(Figure 6).

Figure 5: Remove remaining eight (8) screws on the left and right sides of the cabinet

Four (4) screws located on left side of cabinet

Figure 6: Remove the ten (10) screws from the front panel/

lter rack.

6. Locate and remove the six (6) screws located inside the cabinet joining the upper and lower cabinet sections (Figure 7).

Note: Pull the insulaton away from the walls of the cabinet interior to get access to the screws.

7. Separate the lower return air cabinet section from the upper blower/discharge cabinet section (Figure 8).

Figure 4: Remove three (3) screws (bottom row) on the back

of the unit.

Back of Unit

Figure 7: Remove the six (6) screws located on the interior

of the unit.

Return air cabinet section interior

Figure 8: Separate the lower cabinet section from the upper cabinet

Page 8 of 48 / IM 986-2

Three screws (bottom row)

Dimensional Data

Figure 9: Model VHC/VHF – 18" × 18" Cabinet – Size 009-018

Left Side View

Front View

Top View

Dimensions

80" 18.07" 18.11" 37.50" .88" 58.09" 2.38" 3.125" 2" 2" 6.72" 12.4" 7.9" 3.3"

Unit Size

009–018

18" × 18"

Cabinet

A B C D E F G J K L M N P Q

88" 18.07" 18.11" 37.50" .88" 58.09" 2.38" 3.125" 2" 2" 6.72" 12.4" 7.9" 3.3"

92" 18.07" 18.11" 37.50" .88" 58.09" 2.38" 3.125" 2" 2" 6.72" 12.4" 7.9" 3.3"

96" 18.07" 18.11" 37.50" .88" 58.09"

A R S T U V

80" 3" 3" 3.3" 4.5" 4.5"

88" 3" 3" 3.3" 4.5" 4.5"

92" 3" 3" 3.3" 4.5" 4.5"

96" 3" 3" 3.3" 4.5" 4.5"

2.38" 3.125"

Table 1.

Discharge Openings

Unit Size

W H W H W H W H

009 – 012 015 – 018

2" 2" 6.72" 12.4" 7.9" 3.3"

Single Double Triple Single-Top Opening

14" 16" 14" 8" NR NR 12" 12"

14" 16" 14" 8" 14" 8" 12" 12"

NR = Not Recommended

IM 986-2 / Page 9 of 48

Dimensional Data

Figure 10: Model VHC/VHF – 24" × 24" Cabinet – Size 021-036

Front View

Left Side View

Top View

Dimensions

Unit Size

80" 24" 24.04" 37.50" .88" 58.08" 2.38" 4.54" 2" 3" 6.72" 12.13" 7.63" 3.13"

A B C D E F G J K L M N P Q

021–036

88" 24" 24.04" 37.50" .88" 58.08" 2.38" 4.54" 2" 3" 6.72" 12.13" 7.63" 3.13"

24" × 24"

92" 24" 24.04" 37.50" .88" 58.08" 2.38" 4.54" 2" 3" 6.72" 12.13 7.63" 3.13"

Cabinet

96"

A R S T U V

80" 3.09" 3.10" 3.12" 4.50" 4.50"

88" 3.09" 3.10" 3.12" 4.50" 4.50"

92" 3.09" 3.10" 3.12" 4.50" 4.50"

96" 3.09" 3.10" 3.12" 4.50" 4.50"

24" 24.04"

37.50" .88" 58.08"

2.38" 4.54"

2" 3" 6.72" 12.13" 7.63" 3.13"

Table 1.

Discharge Openings

Unit Size

W H W H W H W H

021 – 024 030 – 036

Single Double Triple Single-Top Opening

NR NR 18" 10" 18" 10" 18" 18"

NR NR 18" 14" 18" 10" 18" 18"

NR = Not Recommended

Page 10 of 48 / IM 986-2

Pre-Installation Considerations

1. To prevent damage to equipment, do not operate supplementary heating and cooling during the construction period.

2. Inspect the carton for any specic tagging numbers

indicated by the factory per a request from the installing contractor. At this time the voltage, phase and capacity should be checked against the plans.

3. Check the unit size against the plans to verify that the unit is being installed in the correct location.

4. Before installation, check the available dimensions of the area where the unit is to be installed versus the dimensions of the unit.

5. Note the location and routing of water piping, condensate drain piping, and electrical wiring. The locations of these items are clearly marked on submittal drawings.

6. The installing contractor will nd it benecial

to confer with piping, sheet metal, and electrical foremen before installing any unit.

Figure 11: Typical Side by Side Unit Installation

Note: Check the unit data plate for correct voltage with the plans before installing the equipment.

WARNING

Make sure all electrical ground connections are made in accordance with local code.

WARNING

The contractor shall cover the units to protect the machines during nishing of the building. This is critical while spraying reproong material on bar joists, sandblasting, spray painting and plastering.

For Optimum Unit Performance and to Help Minimize Noise and Vibration

● Adhere to the "Critical Dimensions" for locations of

framing and distances to the cabinet.

● Install a 1/4" thick vibration isolation pad under the

entire footprint of the unit cabinet base.

● Be sure there are no kinks and that the stainless

steel braided hoses do not come in contact with and vibrate on chassis and cause noise.

● Ensure there is no metal-to-metal contact between

return air grille and cabinet and the discharge diffuser and the cabinet, use provided gaskets.

● Air balancing in ducted applications is critical for proper airow at each diffuser.

NOTICE

Top air discharge units will require turning vanes and/or a volume damper for proper air flow and balancing, to minimize turbulence. These components must be field-installed and furnished in accordance with SMACNA guidelines.

IM 986-2 / Page 11 of 48

Cabinet Configurations

Figure 12: Single Side Discharge

Figure 13: Double Side Discharge

Figure 14: Side & T op Discharge (See Notice on page 11) Figure 15: Double Side & Top Discharge (See Notice on page 11)

Figure 16: Top Discharge (See Notice on page 11) Figure 17: Closed Plenum – Field Modication Required

= Return Riser = Supply Riser = Drain = Return Air = Discharge Air = Top Discharge

Page 12 of 48 / IM 986-2

Figure 18: Typical Framing & Discharge Arrangements

Double Side Discharge

= Return Air

= Discharge Air

Typical Ducted Application

NOTICE

Note: All ducted applications require a unit that utilizes an ECM-X13 or ECM 2.3 motor (sizes 021-036). X13 motors are factory set for 2-speeds, 2 and 4 tap. For ducted unit applications only position 1 and 2-speed motor taps should be used. Additionally, static pressure must not exceed 0.40 inch static. See table below.

ECM-X13 Motor CFM - Sizes 021 - 036 External Static Pressure (Ducted Applications)

External Static Pressure, WC" Unit Size Speed

Speed 1

021

024

Speed 2

030

Speed 2

036

Speed 2

Speed 1 Speed 2

Speed 1

0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40

830

770

830

770

1200

1080

1200

1080

820

760

820

760

1180

1060

1180

1060

800

740

800

740

1160

1030

1160

1030

780

720

780

720

1140

1010

1140

1010

770

700

770

700

1120

990

1120

990

760

690

760

690

1100

970

1100

970

730

660

730

660

1080

950

1080

950

850

780

850

780

1230

1100

1230

1100

710

640

710

640

1060

930

1060

930

IM 986-2 / Page 13 of 48

Critical Dimensions

Location of studs is critical for proper installation and

t up and can help to reduce unit noise due to vibration

when properly installed.

Figure 19: Framing Locations to Unit Openings

Note: If the unit cabinet was shipped without risers attached it will be necessary to remove the appropriate riser knockouts prior to positioning the cabinet and connecting to the riser stub outs.

Figure 20: Vertical Riser Stub-Outs Locations to Unit Knockouts

Unit Size 021-036 = 4.54" Unit Size 009-018 = 3.125"

1/2" Conduit Fitting for Electrical Supply

Unit Front Return Air

Table 1: Reference Locations for Framing

Framing Locations

Unit Size

80" 18" 2.07" 6" 22.25" 58.75" 61" 79" 3.125" 3.125"

18" × 18"

92" 18" 2.07" 6" 22.25" 58.75" 73" 91" 3.125" 3.125"

96" 18" 2.07" 6" 22.25" 58.75" 77" 95" 3.125" 3.125"

80" 24" 2.125" 6" 28.25" 59.5" 63" 79" 4.54" 3.125"

24" × 24"

92" 24" 2.125" 6" 28.25" 59.5" 75" 91" 4.54" 3.125"

96" 24" 2.125" 6" 28.25" 59.5" 79" 95" 4.54" 3.125"

Dimension includes approximately 1/4" for vibration isolation pad

Dimension “E” ± 0.125

Dimension “G” will vary based on diffuser size. Refer to Table 2, Discharge Knockout Openings on page 16.

Dimension “H” will vary based on cabinet height selected.

88" 18" 2.07" 6" 22.25" 58.75" 69" 87" 3.125" 3.125"

88" 24" 2.125" 6" 28.25" 59.5" 71" 87" 4.54" 3.125"

Dimensions do not include 1/4" vibration isolation pad

1, 3

1, 4

J K L M N

58.08"

37.50"

2.38"

3.3" 7.9" 12.4"

3.13" 7.63" 12.13"

Page 14 of 48 / IM 986-2

Critical Dimensions

Return Air Grille/Panel Dimensions

Location of studs in relation to the unit and the return air grille panel are critical for proper installation and

t up. When installed, the return air grille gasket must

compress and seal completely against the outer edge of

the cabinet and around the inner front panel and lter

bracket. See page 24, “Installing The Return Air/Grill

Panel” and page 14, gure 19 “Framing Locations to

Unit Openings”.

Figure 21: Unit Sizes 009 - 018 (18" x 18" Cabinet)

Figure 22: Unit Sizes 021 - 036 (24" x 24" Cabinet)

IM 986-2 / Page 15 of 48

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