Bard CH3S1, CH4S1, CH5S1 User Manual

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INSTALLATION INSTRUCTIONS

CHDM

DEHUMIDIFICATION MODULE for use with

CH3S1

CH4S1

CH5S1

Bard Manufacturing Company, Inc.

Manual :

2100-506D

Bryan, Ohio 43506

Supersedes:

2100-506C

Since 1914...Moving ahead just as planned.

File:

Volume III Tab 17

Date:

12-05-11

 

Manual

2100-506D

Page

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CONTENTS

Getting Other Information and Publications

 

 

Tables

 

 

For More Information ...............................................

 

3

Table 1

CH Dehumidifier Performance ..............

6

 

 

 

Table 2 System Refrigerant Pressure ................

7

Wall Mount General

 

 

 

 

 

Description ............................................................

 

4

Figures

 

 

Shipping Damage

 

4

 

 

 

Figure 1

Wiring Diagram

8

General

 

4

 

Figure 2

Wiring Connection High & Low Voltage

9

Installation

4 & 5

Figure 3

Supply Duct

10

Sequence of Operation

 

5

 

Figure 4

Basic Installation

11

High Pressure Switch & Lockout Sequence

 

5

 

 

 

 

Low Pressure Switch Bypass & Lockout Sequence ...

5

 

 

 

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

 

5

Cabinet & Functional Components

 

 

 

 

 

 

 

 

Exploded View ....................................................

12

 

 

 

Parts List

............................................................

13

 

 

 

Exploded View ....................................................

14

 

 

 

Parts List

............................................................

14

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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 ............................

ACCA Manual J

Residential Winter and Summer Air Conditioning

Duct Design for Residential ..............

ACCA Manual D

Winter and Summer Air Conditioning and Equipment

Selection

FOR MORE INFORMATION, CONTACT THESE PUBLISHERS:

ACCA

Air Conditioning Contractors of America

 

1712 New Hampshire Ave. N.W.

 

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

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DESCRIPTION

The CHDM dehumidifier is designed to be used with Bard 3 through 5 ton CH heat pump models. It will be installed in the outdoor section of the CH unit. The dehumidifier incorporates a complete refrigeration system. It will share the high & low voltage control from the CH control panel. The CHDM is for use in CH*S Series units with or without CHERV or CHCRV. The CHDM cannot be used in units equipped with economizers CHEIFM.

SHIPPING DAMAGE

If a shipment is damaged or the piece count does not agree with the quantity shown on the freight bill, the buyer/receiver should make note on all copies of the freight company’s delivery receipt of any damages and/ or shortages at the time of delivery. The receiving agent and the freight company’s agent should both sign the delivery receipt and the bill of lading. It is preferred, that both signatures are obtained at the time of delivery. If at all possible at the time of delivery, photograph the noted damages as evidence to support a freight claim.

The damage and/or shortage notation on the delivery receipt does not constitute a claim. It is the recipient’s responsibility to initiate the claim process by requesting an inspection and requesting a claim number from the freight carrier. Save all noted freight bills, bills of lading, delivery receipts, packing sheets and invoices for documentation that will be required to support an itemized claim.

For concealed damage you must immediately notify the delivering freight carrier by phone and request an inspection. Many freight carriers will not honor concealed damage claim beyond 48 hours from the time of delivery or if the product has been moved to another location other than the ship to address. Most freight carriers will challenge claims written after a two-week period.

GENERAL

The CH Dehumidifier equipment covered in this manual should be installed by trained, experienced service and installation technicians.

While these instructions are intended as a general recommended guide, they do not supersede any national and/or local codes in any way and are not intended as a step-by-step procedure with which the mechanically inclined owner can install the package. See Page 3 for information on codes and standards.

The dehumidifier is shipped in one carton and contains the electrical harness, miscellaneous hardware and installation instructions. Where local regulations are at a variance with instructions, installer should adhere to local codes.

INSTALLATION

DEHUMIDIFIER: Unpack the dehumidifier. Set aside the sheet metal duct for now. Facing the outdoor section of the CH model, on the right-hand side, there is a long, narrow access panel. Remove this panel and set aside. (See Page 11, Figure 4.)

Remove the fill plate located in the bottom of this compartment by unscrewing the four screws. Remove the 1½" knockout and clear the insulation hole. Place fill plate back in the unit. With a marker, trace the 1½" hole onto the screen below. Remove the fill plate again and cut out marked hole. Place fill plate back into unit and reattach with four screws.

Place the dehumidifier in this opening by placing the wedge end of the cabinet in first and slide all the way back (see Figure 4).

IMPORTANT

Make sure cabinet insulation does not tear!

WIRING: Remove the knockout in the back of the CH control panel and insert bushing (see Figure 2). Route high and low voltage wires into the CH control panel through the bushing. Connect per Figures 1 & 2. Connect a humidistat (field-supplied) per the low voltage connection diagram in the CH Literature.

WARNING

Open and lock unit disconnect switch before installing this accessory to prevent injury or death due to electrical shock or contact with moving parts. Turn thermostat to OFF.

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DRAIN: Connect a drain trap to the drain fitting under the bottom of the dehumidifier section of the unit. The drain connection is a ¾" female pipe fitting. The use of a trap is required to ensure proper drainage.

AIR CHANNEL ASSEMBLY: (See Figure 3.) Remove cover plate in unit and cut out the insulation. On CH3S1 models, the duct extension is to be removed and a new piece of foam (supplied) added to the bottom of the air channel assembly. Slide the air channel assembly into the unit and position the assembly to the left until the angle hits the side of the inner back. Secure the angle with three self-drilling screws. Secure the top with one screw.

SEQUENCE OF OPERATION

Dehumidification – Circuit DH makes at the humidistat pulling in the compressor contactor, starting the compressor and the dehumidifier blower motor. The “G” (indoor motor) is automatically completed on call for dehumidification (Relay #2).

The dehumidifier may operate alone or run simultaneously with the first stage of the CH unit. When the CH unit switches to second stage, the operation of the dehumidifier will be locked out (Relay #1).

The Compressor Control Module is an anti-short cycle/ lockout timer with high and low pressure switch monitoring.

On initial power up or any time power is interrupted to the unit, the delay on make period begins, which will be two minutes. When the delay on make is complete and the high pressure and low pressure are closed, the compressor contactor is energized. Upon shutdown, the delay or break timer starts and prevents restart until the delay on break and delay on make have expired.

During routine operation of the unit with no power interruption, the compressor will operate on demand with no delay.

HIGH PRESSURE SWITCH AND LOCKOUT SEQUENCE

If the high pressure switch opens, the compressor contactor will de-energize immediately. The lockout timer will go into a soft lockout and stay in soft lockout until the high pressure switch closes and the delay on break time has expired. If the high pressure switch opens again in the same operating cycle, the unit will go into manual lockout. Recycling the wall humidistat resets the manual lockout.

LOW PRESSURE SWITCH BYPASS & LOCKOUT SEQUENCE

If the low pressure switch opens for more than 120 seconds, the compressor contactor will de-energize and go into a soft lockout. Regardless the state of the low pressure switch, the contactor will re-energize after the delay on make time delay has expired. If the low pressure switch remains open longer than 120 seconds, the unit will go into manual lockout. Recycling the wall humidistat resets the manual lockout.

NOTE: Both high and low pressure switch controls are inherently automatic reset devices. The high pressure and the low pressure switch cut out and cut in settings are fixed. The lockout features, both soft and manual, are a function of the compressor control module.

FREEZE STAT OPERATION: The freeze stat operation will open at 32° and de-energize the compressor and fan. The compressor and fan will restart after the coil defrosts and the freeze stat warms to 57°.

PRESSURE SERVICE PORTS

High and low pressure service ports are installed on the unit, so the system operating pressures can be observed. To gain access to these pressure ports, remove the long narrow panel on the right-hand side of the outdoor section of the CH unit. See Figure 4.

Reference the pressure table located on the front lower panel and Table 2 within this manual.

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TABLE 1

CH DEHUMIDIFIER PERFORMANCE

Dry

 

 

Water Removal lb./hr (PPD)

 

 

Bulb

 

 

Relative Humidity % Rh

 

 

Temp

 

 

 

 

 

 

 

50

55

60

65

70

75

80

F

 

 

 

 

 

 

 

 

65

1.0 (24.0)

1.3 (31.2)

1.5 (36.0)

1.7 (40.8)

2.0 (48.0)

2.2 (52.8)

2.4 (57.6)

 

 

 

 

 

 

 

 

70

1.2 (28.8)

1.5 (36.0)

1.8 (43.2)

2.0 (48.0)

2.3 (55.2)

2.6 (62.4)

2.8 (67.2)

 

 

 

 

 

 

 

 

75

1.4 (33.6)

1.7 (40.8)

2.0 (48.0)

2.4 (57.6)

2.7 (64.8)

3.0 (72.0)

3.3 (79.2)

 

 

 

 

 

 

 

 

80

1.7 (40.8)

2.0 (46.0)

2.4 (57.6)

2.7 (64.8)

2.8 (67.2)

3.4 (81.6)

3.7 (88.8)

 

 

 

 

 

 

 

 

85

2.0 (48.0)

2.3 (55.2)

2.8 (67.2)

3.1 (74.4)

3.5 (84.0)

3.9 (93.6)

4.3 (103.2)

 

 

 

 

 

 

 

 

90

2.2 (52.8)

2.7 (64.8)

3.1 (74.4)

3.6 (86.4)

4.0 (96.0)

44 (105.6)

4.8 (115.2)

 

 

 

 

 

 

 

 

Notes: Dry Bulb Temperature F and % RH are the return air conditions to the CH unit One pint of water = 1.04 lb.

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TABLE 2

CHARGING PRESSURE LABEL

SYSTEM REFRIGERANT PRESSURE CHART

Return Air

Pressure

 

 

Relative Humidity %

 

 

Temperature

 

 

 

 

 

 

 

50% RH

55% RH

60% RH

65% RH

70% RH

75% RH

80% RH

 

70° DB

Low Side

96

97

98

100

102

104

106

High Side

248

253

258

261

265

269

273

 

75° DB

Low Side

110

112

114

116

117

118

120

High Side

270

276

282

288

294

298

303

 

80° DB

Low Side

115

119

123

127

132

136

140

High Side

297

306

315

324

333

342

351

 

85° DB

Low Side

120

127

134

141

148

153

158

High Side

342

349

356

363

370

375

380

 

Low Side pressure: ±2°

 

Table is based upon rated CFM (airflow) across the Evaporator

High Side Pressure:±5°

 

Coil. If there is any doubt as to the correct operating charge

being in the system, the charge should be removed, system evacuated, and recharged to serial plate instructions.

Capacitor for Compressor/Blower Motor: Part #8552-085, 15/5 MFD 370V

7961-679

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FIGURE 1

Unit Control Panel

Low Voltage

 

 

Term. Block

230/208-60-1

 

 

 

 

C

 

 

 

G

TAPE

19

 

OFF

 

Red

 

DH

 

 

R

 

Black Green

 

 

 

 

Y1

 

18

 

Purple

Purple/White

29

 

Black/White

7

 

 

 

Ground

33

14

15

16

Low

High

Freeze

Pressure

Pressure

Thermo-

Control

Control

stat

13

Fan

Motor

Brown

Black

 

Red

Red

 

 

 

 

 

 

3

 

 

 

 

 

Contactor

 

 

 

L1

L2

Blk/White

 

Yellow

 

 

 

 

Blue

Blue

 

Black

 

 

 

 

 

 

 

 

T1

T2

 

Yellow

Yellow

Overload

 

 

 

11

 

C

S

 

 

 

R

 

 

 

12

 

 

Compressor

 

 

 

9

10

 

Red

 

 

 

 

 

Relay #2 28

 

 

2

4

 

Orange

5

 

Yellow

1

3

 

 

 

4

 

 

5

6

30

4

C

F

Run H

Capacitor

1

!WARNING

USE COPPER CONDUCTORS ONLY SUITABLE FOR AT LEAST 75° C.

Red/White

 

 

Black

 

 

 

1

5

2

 

Black

Black/White

Relay #1 28

 

 

3

 

4

 

 

 

Black/White

 

 

 

 

17

Yellow

 

 

 

 

 

 

 

8

 

HPC

CC

 

 

 

 

 

R

ALR

 

 

 

Y

C

 

 

 

 

MINUTES

Compressor

 

 

3 4

5

 

 

 

Control

 

 

2

 

 

 

LPC

 

 

Module

 

1

 

 

 

 

 

 

2

 

 

 

 

 

Red/White

!DANGER

*ELECTRICAL SHOCK HAZARD *DISCONNECT POWER BEFORE SERVICING.

99

Wire Identification numbers

 

 

for Bard use only.

4056-213

 

 

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FIGURE 2

Run wires to terminal block for 460 Volt unit control panel

Run wires to terminal block

Route green ground wire

for 230 Volt unit control panel

to ground lug

 

Control

 

Panel

 

Remove

 

knockout and

 

insert strain

 

relief bushing

 

from opposite

 

side of panel.

 

Run wires into

 

bushing and

 

close.

Insert wires

 

through bushing

Dehumidifier

and attach to

low voltage

 

terminal block

 

Wire Routing Instructions

Low Voltage Wiring Connections

 

High Voltage Wiring Connections

 

Orange

NOT USED (TAPE OFF)

230 Volt Single Phase

 

 

230 Volt 3 Phase

 

 

 

 

 

 

 

 

 

Connection

 

 

Connection

 

 

Black/White

 

 

 

 

 

 

 

 

 

 

L1

L2

 

L1

L2

L3

 

To "C"

 

 

 

 

 

 

 

Red/White

 

 

 

Black

 

 

 

Black

To "R"

 

Red

 

Red

 

 

 

 

 

 

 

Purple

 

 

To "L2"

 

 

 

To "L3"

 

 

 

 

 

 

 

 

To "Y1"

Purple/White

 

To "L1"

 

 

To "L1"

 

 

 

460 Volt 3 Phase Connection

 

 

 

 

 

 

 

 

To "DH"

 

240 Volt

 

Black

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

To "L2"

 

 

 

Supply From

 

 

 

 

 

 

 

 

 

 

 

 

 

Step Down Transformer

 

 

To "L1"

 

 

 

(See Wiring Diagram)

 

 

 

 

 

Red

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Terminal Block 64

 

 

 

 

 

 

 

 

 

 

MIS-2454 C

 

 

 

 

 

 

 

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FIGURE 3

5(029( 3/$7(

6&5(:

326,7,21 $1*/(

72 /()7 $6 6+2:1

6(/) 7$33,1* 6&5(:6

$,5 &+$11(/ $66 < '(+80,',),(5 $66 <

5(029( (;7(16,21 )25 &+ 6 81,76(( 3$*( 2) ,16758&7,21 0$18$/

'8&7 (;7(16,21

$,5 &+$11(/ $66 <0$,1 3$57 72 %( 86(' 21 $// 02'(/6

6&5(:6

0,6

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Filter Access

Door

Vent Option

Door

FIGURE 4

Unit Right Side

Control Panel

Door

Dehumidifier

Hex grille pattern (under fill plate)

Ø1.500 Drain

Fill Plate

Knockout

 

Drain Tube

 

(must have trap)

 

Field Supplied

Dehumidifier

Access Panel

Service

Ports

MIS-2456

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CABINET and FUNCTIONAL COMPONENTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6(;3

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CABINET and FUNCTIONAL COMPONENTS

Drawing No. Part No.

Description

CHDM

1

107-267

Condenser Top

X

 

 

 

 

2

S900-289

Complete Blower Assembly

X

 

 

 

 

3

5451-011

Grommet

3

 

 

 

 

4

8102-015

1/6 HP Motor

X

 

 

 

 

5

151-120

Blower Housing

X

 

 

 

 

6

113-342

Blower Bracket

3

 

 

 

 

7

5152-099

Blower Wheel

X

 

 

 

 

8

8200-044

Motor Mount

X

 

 

 

 

9

109-202

Dehumidifier Back

X

 

 

 

 

10

127-358

Dehumidifier Base

X

 

 

 

 

11

152-424

Condenser Door

X

 

 

 

 

12

8408-038

Freeze Protect T-Stat

X

 

 

 

 

13

123-117

Drain Pan Assembly

X

 

 

 

 

14

141-331

Compressor Support

X

 

 

 

 

15

1012-218

1/4-20 Cage Nut

3

 

 

 

 

16

8000-304

Compressor

X

 

 

 

 

17

153-425

Evaporator Door

X

 

 

 

 

18

S153-427

Compressor Door

X

 

 

 

 

19

6031-006

Brass Gauge Port

2

 

 

 

 

20

S153-426

Control Panel Door

X

 

 

 

 

21

5201-015

Liquid Line Drier

X

 

 

 

 

22

See Control Panel

Control Panel Assembly

X

Parts List

 

 

 

 

 

 

 

23

8406-111

High Pressure Switch

X

 

 

 

 

24

8406-065

Low Pressure Switch

X

 

 

 

 

25

5060-134BX

Evaporator Coil

X

 

 

 

 

26

5051-149BX

Condenser Coil

X

 

 

 

 

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CABINET and FUNCTIONAL COMPONENTS

 

 

 

6(;3

Drawing No.

Part No.

Description

CHDM

 

1

8201-062

Relay

2

 

 

 

 

 

 

 

 

2

8611-017

Snap Bushing

X

 

 

 

 

 

 

 

 

3

135-241

Control Panel Partition

X

 

 

 

 

 

 

 

 

4

8201-088

Compressor Control Module

X

 

 

 

 

 

 

 

 

5

S117-275

Control Panel

X

 

 

 

 

 

 

 

 

6

8550-007

Capacitor Bracket

X

 

 

 

 

 

 

 

 

7

8552-085

Capacitor

X

 

 

 

 

 

 

 

 

8

8611-006

Ground Terminal

X

 

 

 

 

 

 

 

 

9

8611-068

Strain Relief Bushing

2

 

 

 

 

 

 

 

 

10

8401-006

Contactor

X

 

 

 

 

 

 

 

 

 

 

 

 

 

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