Bard QW Series Manual de usuario

Page 1 of 50

Earth Loop Fluid

Temperatures 25 – 110

Ground Water Temperature 45 – 75

INSTALLATION INSTRUCTIONS

Bard Manufacturing Company, Inc.

Bryan, Ohio 43506

www.bardhvac.com

Manual No.: 2100-577C

Supersedes: 2100-577B

Date: 7-25-17

QW SERIES GEOTHERMAL R-410A

STAGED CAPACITY PACKAGED HEAT PUMP

Models:

QW2S2-A

QW2S2-B

QW2S2-C

QW2S2DA

QW2S2DB

QW2S2DC

QW3S2-A

QW3S2-B

QW3S2-C

QW3S2DA

QW3S2DB

QW3S2DC

QW4S2-A

QW4S2-B

QW4S2-C

QW4S2DA

QW4S2DB

QW4S2DC

QW5S2-A

QW5S2-B

QW5S2-C

QW5S2DA

QW5S2DB

QW5S2DC

MIS-2736

Manual 2100-577C

Page 2 of 50

CONTENTS

Getting Other Information and Publications

For more information, contact these publishers: ...... 4

QW General Information

QW Model Nomenclature....................................... 5

Shipping Damage ................................................. 7

Unit Removal From Skid ....................................... 7

Handling Unit After Removal From Skid ................. 7

Removal of Wall Bracket from Shipping Location..... 8

General ............................................................... 8

Minimum Installation Height ................................. 8

Duct Work ......................................................... 11

Filters ............................................................... 11

Condensate Drain ............................................... 11

Mist Eliminator Service....................................... 13

Installation

Mounting the Unit .............................................. 15

Wiring – Main Power........................................... 18

Wiring – Low Voltage Wiring................................. 18

General ............................................................. 18

Low Voltage Connections..................................... 19

Start Up

Description of Standard Equipment...................... 26

Adjustments ...................................................... 27

Optional CFM .................................................... 28

Important Installer Note...................................... 28

Phase Monitor.................................................... 28

Service Hints ..................................................... 28

Sequence of Operation........................................ 28

Pressure Service Ports ........................................ 29

Piping Access to Unit ......................................... 29

Pressure Tables .................................................. 32

Optional Accessories........................................... 33

Closed Loop (Earth Coupled Ground Loop

Applications)

Circulation System Design................................... 34

Copper Water Coil Application ............................. 34

Start Up Procedure for Closed Loop System .......... 35

Open Loop (Well System Applications)

Water Connections.............................................. 37

Well Pump Sizing ............................................... 38

Start Up Procedure for Open Loop System ............ 38

Water Corrosion.................................................. 39

Remedies of Water Problems ............................... 39

Lake and Pond Installations ................................ 40

Cooling Tower/Boiler Application .......................... 42

Service

Unbrazing System Components............................ 45

Troubleshooting GE ECM™ Blower Motors .............. 46

Quick Reference Troubleshooting Chart for

Water to Air Heat Pump......................................... 48

Ground Source Heat Pump

Performance Report .............................................. 49

Manual 2100-577C

Page 3 of 50

Figures

Figure 1 Unit Dimensions .................................. 6

Figure 2 Removal of Unit From Skid ................... 7

Figure 3 Proper Handling of Unit After Removal

from Skid ............................................ 8

Figure 4 Installation of Unit w/Wall Sleeve .......... 9

Figure 5 Installation With Free Blow Plenum ..... 10

Figure 6 Ducted Application ............................ 10

Figure 7 Supply Duct Connections.................... 11

Figure 8A Condensate Drain............................... 12

Figure 8B Optional Rear Drain............................ 12

Figure 8C Rear Drain (Top View) ......................... 13

Figure 9 Removal of Q-TEC ERV....................... 14

Figure 10 Remove Locking Screws from Wheels... 15

Figure 11 Unit Mounting Without Wall Sleeve...... 16

Figure 12 Component Location .......................... 17

Figure 13 Low Voltage Wire Harness Plug............ 19

Figure 14 Remote Thermostat Wiring "X" Option .. 20

Figure 15 Factory Mounted T-Stat Wiring "D" Option... 21

Figure 16 Factory Mounted T-Stat Wiring "H" Opt. 22

Figure 17 Remote Thermostat Wiring "K" Option ... 23

Figure 18 Fact. Mounted T-Stat "1" & "3" Opt. ..... 24

Figure 19 Fact. Mounted CompleteStat™ Opt. .... 25

Figure 20 CO2 Control Conﬁguration................... 27

Figure 21 Fluid Connections w/Ventilation

Wall Sleeve........................................ 30

Figure 22 Fluid Connections w/o Ventilation

Wall Sleeve........................................ 31

Figure 23 Circulation System ............................. 34

Figure 24 Water Temperature and Pressure

Test Procedure................................ 35

Figure 25 Performance Model WGPM-1C ............ 36

Figure 26 Performance Model WGPM-2C ............ 36

Figure 27 Piping Diagram .................................. 37

Figure 28 Cleaning Water Coil ............................ 40

Figure 29 Water Well System ............................. 41

Figure 30 Water Source H/P Cooling Cycle .......... 43

Figure 31 Water Source H/P Heating Cycle .......... 44

Figure 32 Control Disassembly ........................... 47

Figure 33 Winding Test...................................... 47

Figure 34 Drip Loop .......................................... 47

Tables

Table 1 Electrical Speciﬁcations ......................... 5

Table 2 Operating Voltage Range ....................... 18

Table 3 Wall Thermostats ................................ 18

Table 4 Indoor Blower Performance ................... 29

Table 5 Pressures ............................................ 32

Table 6 Optional Accessories ............................ 33

Table 7 Constant Flow Valves ............................ 37

Table 8 Water Flow and Pressure Drop ............... 42

Manual 2100-577C

Page 4 of 50

GETTING OTHER INFORMATION AND PUBLICATIONS

These publications can help you install the air

conditioner or heat pump. You can usually ﬁnd these

at your local library or purchase them directly from the

publisher. Be sure to consult current edition of each

standard.

National Electrical Code ..................... ANSI/NFPA 70

Standard for the Installation ............. ANSI/NFPA 90A

of Air Conditioning and Ventilating Systems

Standard for Warm Air...................... ANSI/NFPA 90B

Heating and Air Conditioning Systems

Load Calculation for Residential ........ACCA Manual J

Winter and Summer Air Conditioning

Duct Design for Residential .............. ACCA Manual D

Winter and Summer Air Conditioning and Equipment

Selection

Closed-Loop/Ground Source Heat Pump......... IGSHPA

Systems Installation Guide

Grouting Procedures for Ground-Source ......... IGSHPA

Heat Pump Systems

Soil and Rock Classiﬁcation for the Design..... IGSHPA

of Ground-Coupled Heat Pump Systems

Ground Source Installation Standards............ IGSHPA

Closed-Loop Geothermal Systems – Slinky ..... IGSHPA

Installation Guide

FOR MORE INFORMATION, CONTACT THESE

PUBLISHERS:

ACCA Air Conditioning Contractors of America

1712 New Hampshire Avenue

Washington, DC 20009

Telephone: (202) 483-9370

Fax: (202) 234-4721

ANSI American National Standards Institute

11 West Street, 13th Floor

New York, NY 10036

Telephone: (212) 642-4900

Fax: (212) 302-1286

ASHRAE American Society of Heating Refrigerating,

and Air Conditioning Engineers, Inc.

1791 Tullie Circle, N.E.

Atlanta, GA 30329-2305

Telephone: (404) 636-8400

Fax: (404) 321-5478

NFPA National Fire Protection Association

Batterymarch Park

P.O. Box 9101

Quincy, MA 02269-9901

Telephone: (800) 344-3555

Fax: (617) 984-7057

IGSHPA International Ground Source

Heat Pump Association

490 Cordell South

Stillwater, OK 74078-8018

Manual 2100-577C

Page 5 of 50

QW SERIES GEOTHERMAL R-410A STAGED CAPACITY GENERAL INFORMATION

Maximum size of the time delay fuse or circuit breaker for protection of ﬁeld wiring conductors.

These “Minimum Circuit Ampacity” values are to be used for sizing the ﬁeld power conductors. Refer to the National

Electric Code (latest revision), article 310 for power conductor sizing.

CAUTION: When more than one ﬁeld power conductor circuit is run through one conduit, the conductors must be

derated. Pay special attention to Note 8 of Table 310 regarding Ampacity Adjustment Factors when more

than three conductors are in a raceway.

TABLE 1

Electrical Speciﬁcations

MODEL

RATED

VOLTS, Hz

& PHASE

SINGLE CIRCUIT

NO. FIELD

POWER

CIRCUITS



MINIMUM

CIRCUIT

AMPACITY



MAXIMUM EXTERNAL

FUSE OR CIRCUIT

BREAKER

QW2S2-A0Z

QW2S2-B0Z

QW2S2-C0Z

230/208-60-1

230/208-60-3

460-60-3

7.5

QW3S2-A0Z

QW3S2-B0Z

QW3S2-C0Z

230/208-60-1

230/208-60-3

460-60-3

QW4S2-A0Z

QW4S2-B0Z

QW4S2-C0Z

230/208-60-1

230/208-60-3

460-60-3

QW5S2-A0Z

QW5S2-B0Z

QW5S2-C0Z

230/208-60-1

230/208-60-3

460-60-3

NOTES

Insert “D” for dehumidiﬁcation with hot gas reheat.

Reference 7960-612 for complete details.

If “X” control option is selected, then thermostat and humidistat, if

applicable, or DDC control system must be ﬁeld supplied.

lCS9B-THO and -THOC are BACnet w/shielded twisted pair wiring.

mCS9BE-THO and -THOC are BACnet w/shielded twisted pair wiring

and Ethernet port.

Not available for dehumidiﬁcation models.

FILTER OPTIONS

X – 2-Inch Pleated

(MERV8)

STEP CAPACITY |

CAPACITY |

2 – 2 Ton

3 – 3 Ton

4 – 4 Ton

5 – 5 Ton

MODEL NUMBER |

Q-TEC™ Model

REVISION |

COLOR

4 – Buckeye Gray paint

X – Beige paint

V – Platinum w/Slate

Front (Vinyl)

FACTORY-INSTALLED PUMP & PIPING OPTIONS

X – None; all pump and water connections ﬁeld installed, requires ﬁeld piping to the coaxial

water coil using double o-ring ﬁttings, which must be ordered separately.

P – Threaded water connections

1 – DORFC-1 double o-ring ﬂow center, single Grundfos UP26-99F pump piped to water coil

with 150 PSI reinforced hose

2 – DORFC-2 double o-ring ﬂow center, double Grundfos UP26-99F pump piped to water coil

with 150 PSI reinforced hose

3 – Single Grundfos UPS15-42F pump, isolation valves both ends, piped with copper to double

o-ring ﬁttings back corners of unit

4 – Single Grundfos UP26-64F pump, isolation valves both ends, piped with copper to double

o-ring ﬁttings back corners of unit

5 – Single Grundfos UPS26-99-FC pump, isolation valves both ends, piped with copper to

double o-ring ﬁttings back corners of unit

VOLTS & PHASE

A – 230/208/60/1

B – 230/208/60/3

C – 460/60/3

COIL OPTIONS

C – Copper water

N – Cupronickel

0Z – OKW

QW 3 S 2 A 0Z B X V X C X

SPECIALTY

PRODUCTS 

(Non-Standard) |

VENTILATION OPTIONS |

B - Blank-off Plate

V - Commercial Ventilator - Motorized w/Exhaust Spring Return

R -

Energy Recovery Ventilator w/Independent Intake & Exhaust Control

S - Energy Recovery Ventilator w/Intelligent Frost Control Option

CLIMATE CONTROL OPTIONS (Factory Mounted)

X – 24V Terminal Block Only 

D – 8403-060 Electronic/Programmable Thermostat w/Humidity Control

H –

8403-060 Prog. Thermostat w/Humidity Control + 8403-067 CO2 Controller

K – 24V Terminal Block + 8403-067 CO2 Controller Only

1 – CompleteStat CS9B-THO (Temp, Humidity & Occupancy) l

2 – CompleteStat CS9B-THOC (THO + CO2) l

3 – CompleteStat CS9BE-THO (THO w/Ethernet) m

4 – CompleteStat CS9BE-THOC (THO + CO2 w/Ethernet) m

5 – 8403-069 Viconics VT7652H5000B w/BACnet 

6 – 8403-069 Viconics + 8403-067 CO2 Controller 

Manual 2100-577C

Page 6 of 50

FIGURE 1

Unit Dimensions

36 1/16"

68 3/4"

36 7/8"

MIS-2737 D

UNIT DIM. "A" DIM. "B" DIM. "C" DIM. "D" DIM. "E"

QW2S, QW3S 8 5/8" 42" 30" 43" 25"

QW4S, QW5S 8 3/4" 48" 40" 49" 30"

FILTER

RETURN AIR

GRILLE

SUPPLY AIR

THERMOSTAT

(OPTIONAL)

DOOR

(OPTIONAL)

GRILLE

CO2 SENSOR

ACCESS

DOOR

CONDENSER

CIRCUIT BREAKER

ACCESS AND LOCKING

COVER

FRONT VIEW

104"

"C"

"D"

37 1/8"

14"

16 5/8"

15 5/8"

"C"

11 3/4"

1 1/8"

"B"

EXHAUST

VENT

INSTALLED PUMP OPTIONS

POINTS FOR FACTORY

INTAKE

VENT

3, 4, OR 5 (INLET ON LEFT,

OUTLET ON RIGHT AS VIEWED

APPLICATION

DORFC PUMP

ACCESS

FOR FLUID

CONNECTION FOR

FROM BACK OF UNIT)

(OPTIONAL) HIGH

VOLTAGE

ELECTRICAL

ENTRANCE

FLUID CONNECTION

FACTORY

CONNECTED

CONDENSATE

DRAIN

CONNECTION

3/4" PVC MALE

ADAPTER

4.625"

6.00"

1 15/16"

19"

3 3/8"

6 7/8"

11 1/2" LEVEL

34 1/4"

20"

TO FLOOR

BETWEEN

OPENINGS

30 7/8"5 7/16"

(OPTIONAL)

PLENUM BOX

RIGHT SIDE VIEW

(OPTIONAL) HIGH VOLTAGE

BACK VIEW

ELECTRICAL ENTRANCE

FREEBLOW

(OPTIONAL) LOW VOLTAGE

ELECTRICAL ENTRANCE

1 11/16"

3 3/4"

3 1/16"

3 3/8"

SUPPLY AIR OPENING

ELECTRICAL ENTRANCE

(OPTIONAL) HIGH VOLTAGE

ELECTRICAL ENTRANCE

FREEBLOW PLENUM)

(SHOWN WITHOUT

(OPTIONAL) LOW VOLTAGE

TOP VIEW

LOW VOLTAGE

ELECTRICAL ENTRANCE

1 3/4"

7/8"

6 3/4"

3 3/16"

(DUCT SIZE)

"E"

10"

"A"

2 15/16"

20 3/8"

2 1/16"

2 7/16"

Manual 2100-577C

Page 7 of 50

SHIPPING DAMAGE

Upon receipt of equipment, the carton should be

checked for external signs of shipping damage. The

skid must remain attached to the unit until the unit is

ready for installation. If damage is found, the receiving

party must contact the last carrier immediately,

preferably in writing, requesting inspection by the

carrier’s agent.

It is recommended that the unit not be removed from

the skid with a forklift.

The shipping brackets on each side of the unit must be

removed and discarded. See Figure 2-A. The return air

grille panel can be removed to provide a place to hold

the unit. The unit can be slid forward on the skid until

the front wheels hang over the edge of the skid. See

Figure 2-B. The unit can be tipped forward and slid

down the edge of the skid until the front wheels touch

the ground. See Figure 2-C. The wheels will not roll.

They are shipped from the factory locked so they will

not roll. The back of the skid will have to be held down

to keep it from tipping up. The skid can be slid out

from under the unit. The unit can then be set upright.

FIGURE 2

Removal of Unit from Skid

The unit will have to be turned sideways and removed

from the skid to ﬁt through a 36" doorway. If the door

height allows, the unit can be slid sideways through the

door.

If the unit can not be slid through the door, then the

unit will have to be put on a cart and tipped down

to roll through the door. It is recommended that an

appliance cart be used with a strap to hold the unit on

the cart. The wheels of the unit must be locked. If the

wheels were allowed to roll, the unit could roll off the

cart. The unit should always be carted from the left

side. This is the side where the compressor is located.

See Figure 3. The blade of the appliance cart should

be slid under the wheels of the unit. The strap of the

appliance cart should be placed around the unit and

strapped tightly. Help will be required to tip the unit

back onto the cart. The unit can be leaned far enough

back to be rolled through the door. Be careful when

setting the unit back up to keep from damaging the

unit.

UNIT REMOVAL FROM SKID

HANDLING UNIT AFTER REMOVAL

FROM SKID

WARNING

This unit is heavy and requires more than one

person to handle and remove from the skid.

Check unit wheels to ensure that wheels are

locked before removing from skid. Extreme

caution must be taken to prevent injury to

personnel and damage to the unit.

WARNING

Exercise extreme caution when pushing the

unit on the rollers. Handle and push from the

lower 1/3 of the unit. Ensure that debris is

not on the oor where the unit is to be moved

on the rollers. Failure to do so could result in

the unit tipping over and causing bodily injury

and/or damage to the unit.

HOLD SKID DOWN

ASHIPPING BRACKETS BFRONT WHEELS OVER EDGE CFRONT WHEELS ON FLOOR

Manual 2100-577C

Page 8 of 50

REMOVAL OF WALL BRACKET FROM

SHIPPING LOCATION (UNITS WITH

BLANK OFF PLATE ONLY)

The wall brackets are attached to the back of the unit.

Remove and retain the wall brackets for use when

attaching the unit to the wall. In units equipped with

a ventilator a wall sleeve is required and these two wall

brackets are not included. A different style bracket is

supplied with the sleeve assembly.

GENERAL

The equipment covered in this manual is to be installed

by trained, experienced service and installation

technicians.

The unit is designed for use with or without duct work.

For use without duct work, Plenum Box QPB** is

recommended.

These instructions explain the recommended method

to install the water source self-contained unit and the

electrical wiring connections to the unit.

These instructions and any instructions packaged with

any separate equipment required to make up the entire

air conditioning system should be carefully read before

beginning the installation. Note particularly “Start

Procedure” and any tags and/or labels attached to the

equipment.

While these instructions are intended as a general

recommended guide, they do not supersede any

national and/or local codes in any way. Authorities

having jurisdiction should be consulted before the

installation is made. See Page 4 for information on

codes and standards.

Size of unit for a proposed installation should be based

on heat loss calculation made according to methods

of Air Conditioning Contractors of America (ACCA).

The air duct should be installed in accordance with

the Standards of the National Fire Protection Systems

of Other Than Residence Type, NFPA No. 90A, and

Residence Type Warm Air Heating and Air Conditioning

Systems, NFPA No. 90B. Where local regulations are

at a variance with instructions, installer should adhere

to local codes.

MINIMUM INSTALLATION HEIGHT

The minimum installation height of the unit with a

Free Blow Plenum is 8 ft. 9 in. This provides enough

clearance for the plenum to be removed. See Figure 5.

The minimum installation height for ducted

applications is 8 ft. 9 in. This provides enough

clearance to install the duct work. See Figure 6.

FIGURE 3

Proper Handling of Unit after Removal from Skid

APPLIANCE

CART

COMPRESSOR

Q-TEC UNIT

(RIGHT SIDE)

STRAP

Manual 2100-577C

Page 9 of 50

MIS-2739 A

AIR DIVIDER

ELIMINATOR

WALL SLEEVE

MIST

TRIM PIECE

SUPPLY AIR

ROLLERS

BOTTOM

RETURN AIR

CIRCUIT BREAKER, ROTARY,

OR TOGGLE DISCONNECT

ELECTRICAL ACCESS

BLOW PLENUMBOX

(TOP-SIDE)

AND LOCKING COVER

LOW VOLTAGE

OPTIONAL FREE

ELECTRICAL ENTRANCE

(TOP-REAR-SIDE)

VENTILATION

PERMANENT

HIGH VOLTAGE

QW2S, QW3S - 42.000"

QW4S, QW5S - 48.000"

28 7/8"

33 7/8"

103 7/8"

84 1/4"

(X) 18 9/16"

35"

29 1/2"

33"

6 1/8"

17 9/16"

14" to 5"

FIGURE 4

Installation of Unit through Wall with Wall Sleeve

Manual 2100-577C

Page 10 of 50

FIGURE 6

Ducted Application

INSTALLATION HEIGHT

8 FT. - 9 IN.

MINIMUM REQUIRED

MIS-2740

FLOOR

8 FT. - 8 IN.

MINIMUM

"A"

INSTALLATION HEIGHT

9 FT.

MINIMUM REQUIRED

UNIT HEIGHT

7 FT. - 6 IN.

10"

INSTALLATION HEIGHT

8 FT. - 9 IN.

MINIMUM REQUIRED

MINIMUM

12 IN.

TO DUCT BOTTOM

2 IN. MINIMUM

FROM DUCT FLANGE

FLOOR

MIS-2741 A

MODEL "A"

QW2S, QW3S 25"

QW4S, QW5S 30"

DUCT

FIXED CEILING

DUCT FLANGE

SUSPENDED CEILING

FIGURE 5

Installation with Free Blow Plenum

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