Bard CH3S1, CH4S1, CH5S1 User Manual

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	1 of 14

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

Manual	2100-506D
Page	2 of 14

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: [phone]
	Fax: [phone]
ANSI	American National Standards Institute
	11 West Street, 13th Floor
	New York, NY 10036
	Telephone: [phone]
	Fax: [phone]
ASHRAE	American Society of Heating, Refrigerating,
	and Air Conditioning Engineers, Inc.
	1791 Tullie Circle, N.E.
	Atlanta, GA 30329-2305
	Telephone: [phone]
	Fax: [phone]
NFPA	National Fire Protection Association
	Batterymarch Park
	P.O. Box 9101
	Quincy, MA 02269-9901
	Telephone: [phone]
	Fax: [phone]

Manual	2100-506D
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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.

Manual	2100-506D
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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.

Manual	2100-506D
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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.

Manual	2100-506D
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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

Manual	2100-506D
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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

Manual	2100-506D
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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
							Manual	2100-506D
							Page	9 of 14

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

Manual	2100-506D
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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

Manual	2100-506D
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CABINET and FUNCTIONAL COMPONENTS

6(;3

Manual	2100-506D
Page	12 of 14

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

Manual	2100-506D
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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

Manual	2100-506D
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