Bard CH5S1, CH4S1, CH3S1 User Manual

INSTALLATION INSTRUCTIONS
CHDM
DEHUMIDIFICATION MODULE
for use with
CH3S1 CH4S1 CH5S1
Bard Manufacturing Company, Inc. Bryan, Ohio 43506
Since 1914...Moving ahead just as planned.
Manual : 2100-506D Supersedes: 2100-506C File: Volume III Tab 17 Date: 12-05-11
Manual 2100-506D Page 1 of 14
CONTENTS
Getting Other Information and Publications
For More Information ............................................... 3
Wall Mount General
Description ............................................................ 4
Shipping Damage ................................................. 4
General .............................................................. 4
Installation....................................................... 4 & 5
Sequence of Operation ......................................... 5
High Pressure Switch & Lockout Sequence ......... 5
Low Pressure Switch Bypass & Lockout Sequence ... 5
Pressure Service Ports ......................................... 5
Tables
Table 1 CH Dehumidifier Performance .............. 6
Table 2 System Refrigerant Pressure ................ 7
Figures
Figure 1 Wiring Diagram .................................... 8
Figure 2 Wiring Connection High & Low Voltage ... 9
Figure 3 Supply Duct ....................................... 10
Figure 4 Basic Installation ................................ 11
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: (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
Manual 2100-506D Page 3 of 14
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.
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.
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.
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.
Manual 2100-506D Page 4 of 14
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.
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.
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
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.
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:
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°.
The freeze stat
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 Page 5 of 14
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TABLE 1
CH DEHUMIDIFIER PERFORMANCE
yrD
bluB
)DPP(rh/.bllavomeRretaW
hR%ytidimuHevitaleR
pmeT
F
05
56 07 57 08 58 09
55
)0.42(0.1)2.13(3.1)0.63(5.1)8.04(7.1)0.84(0.2)8.25(2.2)6.75(4.2 )8.82(2.1)0.63(5.1)2.34(8.1)0.84(0.2)2.55(3.2)4.26(6.2)2.76(8.2 )6.33(4.1)8.04(7.1)0.84(0.2)6.75(4.2)8.46(7.2)0.27(0.3)2.97(3.3 )8.04(7.1)0.64(0.2)6.75(4.2)8.46(7.2)2.76(8.2)6.18(4.3)8.88(7.3 )0.84(0.2)2.55(3.2)2.76(8.2)4.47(1.3)0.48(5.3)6.39(9.3 )8.25(2.2)8.46(7.2)4.47(1.3)4.68(6.3)0.69(0.4)6.501(44
.bl40.1=retawfotnipenO
06
56
07
57
08
2.301(3.4
2.511(8.4
tinuHCehtotsnoitidnocrianruterehteraHR%dnaFerutarepmeTbluByrD:setoN
Manual 2100-506D Page 6 of 14
65% RH
100
g
261
116
g
288
127
g
324
141
g
363
TABLE 2
CHARGING PRESSURE LABEL
SYSTEM REFRIGERANT PRESSURE CHART
Temperature
70° DB
75° DB
80° DB
85° DB
Pressure Low Side 96 97 98
Hi
h Side 248 253 258
Low Side 110 112 114
Hi
h Side 270 276 282
Low Side 115 119 123
Hi
h Side 297 306 315
Low Side 120 127 134
Hi
h Side 342 349 356
Low Side pressure: ±2° High Side Pressure:±5°
50% RH 55% RH 60% RH
Table is based upon rated CFM (airflow) across the Evaporator Coil. If there is any doubt as to the correct operating charge
Relative Humidity %Return Air
70% RH 75% RH 80% RH
102 104 106 265 269 273 117 118 120 294 298 303 132 136 140 333 342 351 148 153 158 370 375 380
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 Page 7 of 14
FIGURE 1
Unit Control Panel
Low Voltage Term. Block
C G
DH
R
Y1
Purple
230/208-60-1
TAPE OFF
18
Black/White
Purple/White
33
5
19
Red
Black
Green
29
Ground
Overload
161514
Freeze
Thermo-
stat
11
C
S
13
Fan
Low
Pressure
Control
High
Pressure
Control
Motor
R
12
Compressor
10
Red
Red
7
Black
Brown
Relay #2
3
Contactor
Yellow
Yellow
L1 L2
Blue
Blue
T1
Blk/White
Orange
Black
T2
Yellow
Black
9
Red
28
2
4
5
31
Yellow
4
6
30
F
Run
Capacitor
1
WARNING
!
USE COPPER CONDUCTORS
ONLY SUITABLE F O R AT LEAST
*ELECTRICAL SHOCK HAZARD *DISCONNECT POWER BEFORE SERVICING.
99
75° C.
DANGER
!
Wire Identification numbers for Bard use only.
1
25
Black
3
4
Relay #1
4
28
Black/White
Black/White
Red/White
C
H
Yellow
17
HPC
R Y
LPC
CC
ALR
MINUTES
4
3
2
1
C
Compressor
5
Control Module
8
2
Red/White
4056-213
Manual 2100-506D Page 8 of 14
FIGURE 2
Run wires to terminal block
for 460 Volt unit control panel to ground lug
Insert wires
through bushing
and attach to
low voltage
terminal block
Run wires to terminal block
for 230 Volt unit control panel
Route green ground wire
Control
Panel
Remove knockout and insert strain relief bushing from opposite side of panel. Run wires into bushing and close.
Dehumidifier
Low Voltage Wiring Connections
Orange
Red/White
To "R"
Purple
To "Y1"
NOT USED (TAPE OFF)
Black/White
Purple/White
To "DH"
Wire Routing Instructions
230 Volt Single Phase
Connection
To "C"
Red
To "L2" To "L1"
240 Volt
Supply From
Step Down Transformer
(See Wiring Diagram)
High Voltage Wiring Connections
230 Volt 3 Phase
Connection
L1L1
Black
460 Volt 3 Phase Connection
Terminal Block 64
Red
To "L3"
To "L1"
Black
To "L2" To "L1"
Red
L3L2L2
Black
MIS-2454 C
Manual 2100-506D Page 9 of 14
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Manual 2100-506D Page 10 of 14
Filter Access
Door
FIGURE 4
Unit Right Side
Control P anel
Door
Vent Opti on
Door
Hex grille pattern
(under fill plate)
Ø1.500 Drain
Knockout
Fill Plate
Drain Tube
(must have trap)
Field Supplied
Dehumidifier
Dehumidifier Access Panel
Service
Ports
MIS-2456
Manual 2100-506D Page 11 of 14
CABINET and FUNCTIONAL COMPONENTS
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Manual 2100-506D Page 12 of 14
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Manual 2100-506D Page 13 of 14
CABINET and FUNCTIONAL COMPONENTS
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Manual 2100-506D Page 14 of 14
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