Bard MV4000 SERIES Specifications

INSTALLATION

INSTRUCTIONS

WALL MOUNTED

PACKAGED

AIR CONDITIONER

Models:

H42A2 H42L2

H48A2 H48L2

H60A2 H60L2

MIS-2498

Bard Manufacturing Company, Inc.

Bryan, Ohio 43506

Since 1914...Moving ahead just as planned.

Manual : 2100-585

Supersedes: NEW

File: Volume III Tab 16

Date: 03-13-13

Manual 2100-585

Page 1 of 19

CONTENTS

Getting Other Information and Publications 3

Wall Mount General Information

Wall Mount Model Nomenclature .............................. 4

Shipping Damage ..................................................... 4

General ................................................................ 4

Duct Work ................................................................ 5

Filters ................................................................ 5

Condensate Drain .................................................... 5

Installation Instructions

Wall Mounting Information ........................................ 6

Mounting the Unit ...................................................... 6

Clearances Required ................................................ 6

Minimum Clearances ................................................ 6

Wiring – Main Power ............................................... 12

Wiring – Low Voltage Wiring ................................... 12

Dirty Filter Switch & Relay ...................................... 12

Economizer Fail Time Delay Relay ......................... 12

Start Up

General .............................................................. 13

Topping Off System Charge .................................... 13

Safety Practices ...................................................... 13

Important Installer Note ........................................... 13

High Pressure Switch .............................................. 13

Condenser Fan Operation ...................................... 14

Service Hints ........................................................... 14

Sequence of Operation ........................................... 14

Compressor Control Module ................................... 14

Adjustments ............................................................ 14

Pressure Service Ports ........................................... 14

Troubleshooting

Fan Blade Setting Dimensions ................................ 15

Refrigerant Charge ................................................. 15

Removal of Fan Shroud .......................................... 15

Figures

Figure 1 Unit Dimensions ...................................... 7

Figure 2 Mounting Instructions - H42, 48, 60 ........ 8

Figure 3 Electric Heat Clearance .......................... 9

Figure 4 Wall Mounting Instructions .................... 10

Figure 5 Wall Mounting Instructions .................... 10

Figure 6 Common Wall Mounting Installations .... 11

Figure 7 Fan Blade Setting ................................. 15

Tables

Table 1 Fan Blade Dimensions .......................... 15

Table 2 Cooling Pressure .................................. 16

Table 3 Electrical Specifications H**A, H**L ...... 17

Table 4 Recommended Airflow .......................... 18

Table 5 Indoor Blower Performance .................. 18

Table 6 Electric Heat .......................................... 18

Table 7 Optional Accessories ............................ 19

Table 8 Vent & Control Options ......................... 19

Manual 2100-585

Page 2 of 19

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

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

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

ANSI American National Standards Institute

11 West Street, 13th Floor

New York, NY 10036

Telephone: (212) 642-4900

Fax: (212) 302-1286

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

ASHRAE American Society of Heating, Refrigeration 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 2100-585

Page 3 of 19

WALL MOUNT GENERAL INFORMATION

AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE

H

MODEL NUMBER

CAPACITY

42 - 3½ Ton

48 - 4 Ton

60 - 5 Ton

42 A 2 –

REVISIONS

A

VOLTS & PHASE

A - 230/208/60/1

05

KW

X P

A - Right Hand Air Conditioner

L - Left Hand Air Conditioner

X

COLOR OPTIONS

X - Beige (Standard)

1 - White

4 - Buckeye Gray

5 - Desert Brown

6 - Dark Bronze

A - Aluminum

S - Stainless Steel

COIL OPTIONS

X - Standard

1 - Phenolic Coated Evaporator

2 - Phenolic Coated Condenser

3 - Phenolic Coated Evaporator

and Condenser

OUTLET OPTIONS

X - Front (Standard)

VENTILATION OPTIONS

B - Blank-off Plate (No Ventilation)

W - 100% Economizer Temperature

T - 100% Economizer Enthalpy

G - 100% Economizer DC Temperature

F - 100% Economizer DC Enthalpy

FILTER OPTIONS

P - 2 inch Pleated MERV 8

X X J

CONTROL MODULES

(See Spec. Sheet)

SHIPPING DAMAGE

Upon receipt of equipment, the carton should be checked for external signs of shipping damage. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent.

GENERAL

The equipment covered in this manual is to be installed by trained, experienced service and installation technicians.

The refrigerant system is completely assembled and charged. All internal wiring is complete.

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

Flanges are provided for attaching the supply and return ducts.

These instructions explain the recommended method to install the air cooled 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 “Starting

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 3 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 Association for the Installation of Air Conditioning and Ventilating

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.

Manual 2100-585

Page 4 of 19

DUCT WORK

All duct work, supply and return, must be properly sized for the design airflow requirement of the equipment. Air Conditioning Contractors of America

(ACCA) is an excellent guide to proper sizing. All duct work or portions thereof not in the conditioned space should be properly insulated in order to both conserve energy and prevent condensation or moisture damage.

Refer to Table 5 for maximum static pressure available for duct design.

Design the duct work according to methods given by the Air Conditioning Contractors of America (ACCA).

When duct runs through unheated spaces, it should be insulated with a minimum of one inch of insulation.

Use insulation with a vapor barrier on the outside of the insulation. Flexible joints should be used to connect the duct work to the equipment in order to keep the noise transmission to a minimum.

For model series H42, H48 and H60 a 1/4 inch clearance to combustible material for the first three feet of duct attached to the outlet air frame is required. See

Wall Mounting Instructions and Figures 2 and 3 for further details.

Ducts through the walls must be insulated and all joints taped or sealed to prevent air or moisture entering the wall cavity.

Some installations may not require any return air duct.

A metallic return air grille is required with installations not requiring a return air duct. The spacing between louvers on the grille shall not be larger than 5/8 inch.

Any grille that meets with 5/8 inch louver criteria may be used. It is recommended that Bard Return Air Grille

Kit RG5 or RFG5 be installed when no return duct is used. Contact distributor or factory for ordering information. If using a return air filter grille, filters must be of sufficient size to allow a maximum velocity of 400 fpm.

NOTE: If no return air duct is used, applicable installation codes may limit this cabinet to installation only in a single story structure.

FILTERS

A 2-inch pleated MERV 8 is standard with each unit. The filter slides into position making it easy to service. This filter can be serviced from the outside by removing the filter access panel.

CONDENSATE DRAIN

A plastic drain hose extends from the drain pan at the top of the unit down to the unit base. There are openings in the unit base for the drain hose to pass through. In the event the drain hose is connected to a drain system of some type, it must be an open or vented type system to assure proper drainage.

Manual 2100-585

Page 5 of 19

INSTALLATION INSTRUCTIONS

WALL MOUNTING INFORMATION

1. Two holes for the supply and return air openings must be cut through the wall as shown in Figure 2.

2. On wood frame walls, the wall construction must be strong and rigid enough to carry the weight of the unit without transmitting any unit vibration.

3. Concrete block walls must be thoroughly inspected to insure that they are capable of carrying the weight of the installed unit.

MOUNTING THE UNIT

1. These units are secured by wall mounting brackets which secure the unit to the outside wall surface at both sides. A bottom mounting bracket, attached to skid for shipping, is provided for ease of installation, but is not required.

2. The unit itself is suitable for 0 inch clearance, but the supply air duct flange and the first 3 feet of supply air duct require a minimum of 1/4 inch clearance to combustible material for model series

H42, H48 and H60. However, it is generally recommended that a 1-inch clearance is used for ease of installation and maintaining the required clearance to combustible material. See Figure 2 for details on opening sizes.

3. Locate and mark lag bolt locations and bottom mounting bracket location. See Figure 2.

4. Mount bottom mounting bracket.

WARNING

Failure to provide the 1/4 inch clearance between the supply duct and a combustible surface for the first 3 feet of duct can result in fire causing damage, injury or death.

5. Hook top rain flashing, attached to front - right of supply flange for shipping, under back bend of top.

6. Position unit in opening and secure with 5/16 lag bolts; use 7/8 inch diameter flat washers on the lag bolts.

7. Secure rain flashing to wall and caulk across entire length of top. See Figure 2.

8. For additional mounting rigidity, the return air and supply air frames or collars can be drilled and screwed or welded to the structural wall itself

(depending upon wall construction). Be sure to observe required clearance if combustible wall.

9. On side-by-side installations, maintain a minimum of 20 inches clearance on right side to allow access to control panel and heat strips, and to allow proper airflow to the outdoor coil. Additional clearance may be required to meet local or national codes.

Clearances Required for Service Access and Adequate Condenser Airflow

MODELS LEFT SIDE RIGHT SIDE

H42A, H48A, H60A 20" 20"

H42L, H48L, H60L 20" 20"

NOTE: For side by side installation of two (2) H**A models there must be 20" between units. This can be reduced to 15" by using a

H**L model (left side compressor and controls) for the left unit and

HA (right side compressor and controls) for right unit.

Minimum Clearances Required to

Combustible Materials

MODELS

SUPPLY AIR DUCT

FIRST THREE FEET

CABINET

H42A, L / H48A, L

H60A, L

1/4" 0"

Manual 2100-585

Page 6 of 19

FIGURE 1

Dimensions of Basic Unit for Architecural & Installation Requirements (Nominal)

MODEL

WIDTH

(W)

DEPTH

(D)

HEIGHT

(H)

SUPPLY

A B

RETURN

C B E F G I J K L M N O P Q R S1 S2 T

H42A

H42L

H48A

H48L

H60A

H60L

42.075

22.432

84.875

9.88 29.88 15.88 29.88 43.88 19.10 31.66 30.00 32.68 26.94 34.69 32.43 3.37 43.00 23.88 10.00 1.44 16.00 16.00 1.88

All dimensions are in inches. Dimensional drawings are not to scale.

H**A

RIGHT

UNIT W

Built In

Rain Hood

4° Pitch

Heater

Access

Panel

Electric

Heat

C. Breaker/

Disconnect

Access Panel

(Lockable)

Economizer

Air Intake Hood

D

2.13

A

I

Brackets

(Built In)

E

O

Supply Air Opening

B

.44

R

S

Shipping

Location

S

5.88

F

G

Filter Access Panel 1

Ventilation Air

Condenser

Air Outlet

Standard flush vent non-Econ.

models

11"

Low Voltage

Entrance

High Voltage

Electrical

Entrance

Cond.

Inlet

J

C H

K

Optional

Electrical

Entrances

L

M

P

Return Air Opening S

S

S

T

Front View Side View

Drain N

Q Back View

Bottom Installation

Bracket

NOTE 1: Not used when ECONWMT Economizer installed. Filter access is through the ECONWMT hood.

MIS-3210

H**L

LEFT

UNIT

R

S

S

.44

E

O

Supply Air Opening

B

Side Wall

Mounting

Brackets

(Built In)

2.13

A

Top Rain

Flashing

I

Rain Hood

4° Pitch

D

Heater

Access

Panel

C. Breaker/

(Lockable)

Standard flush vent door for non-Econ.

models

Economizer

Air Intake Hood

W

S

Return Air Opening

Optional

Electrical

Entrances

C

Filter Access Panel 1

5.88

Ventilation Air F

S

H

S P

M

L K

J

Cond.

Inlet

11"

Low Voltage

Entrance

G

T

High Voltage

Entrance

Drain Bottom

Installation

Bracket

Back View

Q

N Side View Front View

MIS-3211

NOTE 1: Not used when ECONWMT Economizer installed. Filter access is through the ECONWMT hood.

Note 1: When security fences, theft guards, or other objects restrict use of the standard 100% air intake hood the alternate 3" air intake hood

Bard Part Number WMDK5- (color) may be ordered; however, it will result in only 75% of cooling rated airflow in the full open position instead of the 100% airflow when standard 16" is used. Economizers not used with HA4-5S 2-Stage models.

Manual 2100-585

Page 7 of 19

Manual 2100-585

Page 8 of 19

1 2

7 8

1 8

4" Ty

1 8

1 2

4" Ty

1 2

7 8

FIGURE 3

ELECTRIC HEAT CLEARANCE

H42A2, H42L2, H48A2, H48L2, H60A2, H60L2

NOTE 1: SIDE SECTION VIEW OF SUPPLY AIR

DUCT FOR WALL MOUNTED UNIT SHOWING 1/4

INCH CLEARANCE TO COMBUSTIBLE SURFACES.

WARNING

A minimum of 1/4 inch clearance must be maintained between the supply air duct and combustible materials. This is required for the first 3 feet of ducting.

It is important to insure that the 1/4 inch minimum spacing is maintained at all points.

Failure to do this could result in overheating the combustible material and may result in a fire causing damage, injury or death.

Manual 2100-585

Page 9 of 19

FIGURE 4

WALL MOUNTING INSTRUCTIONS

SEE FIGURE 3 – MOUNTING INSTRUCTIONS

FACTORY SUPPLIED

RAIN FLASHING.

MOUNT ON UNIT

BEFORE INSTALLATION

WALL STRUCTURE

SUPPLY AIR

OPENING

SUPPLY AIR

DUCT

RETURN AIR

OPENING

RETURN AIR

OPENING

RETURN AIR

OPENING

WOOD OR STEEL SIDING

BOTTOM MOUNTING

INSTALLING UNIT.

SIDE VIEW MIS-548 A CONCRETE BLOCK WALL INSTALLATION

MIS-549 B

Manual 2100-585

Page 10 of 19

WOOD FRAME WALL INSTALLATION

FIGURE 5

WALL MOUNTING INSTRUCTIONS

ATTACH TO TOP

PLATE OF WALL

SEE UNIT DIMENSIONS, FIGURE 2,

FOR ACTUAL DIMENSIONS.

E + 1.000

B

1.000

1.000" CLEARANCE

ALL AROUND DUCT

INTERIOR FINISHED WALL

OVER FRAME

1.000" CLEARANCE

ALL AROUND DUCT

SUPPLY DUCT

OPENING

A

I

RETURN DUCT

OPENING

C

EXTERIOR FINISH WALL

OVER FRAME

K

2 x 6

C L

FRAMING MATERIAL

2 x 4'S, 2 x 6'S &/OR

STRUCTURAL STEEL

ATTACH TO BOTTOM

PLATE OF WALL

THIS STRUCTURAL MEMBER

LOCATED TO MATCH STUD

SPACING FOR REST OF WALL.

A SECOND MEMBER MAY BE

REQUIRED FOR SOME WALLS.

FIGURE 6

COMMON WALL MOUNTING INSTALLATIONS

OUTSIDE

WALL

RAFTERS

FINISHED CEILING SURFACE

SUPPLY AIR DUCT

W/ GRILLE

RETURN AIR

OPENING W/ GRILLE

OUTSIDE

WALL

FREE AIR FLOW

NO DUCT

SUPPLY DUCT MAY BE LOCATED IN AN ATTIC

OR BELOW CEILING RAFTERS AS SHOWN

RAFTERS

SUPPLY AIR DUCT

FINISHED CEILING SURFACE

RETURN AIR

OPENING W/ GRILLE

DUCTED SUPPLY

RETURN AT UNIT

SUPPLY DUCT MAYBE LOCATED IN AN ATTIC

OR BELOW CEILING RAFTERS AS SHOWN

RAIN

FLASHING

RAFTERS

SUPPLY AIR DUCT

RAIN

FLASHING

OUTSIDE

WALL

FINISHED

CEILING SURFACE

WALL SLEEVE

RETURN AIR

SPACE

FALSE WALL

RETURN AIR GRILLE

OUTSIDE

WALL

FALSE WALL INSTALLATION

SUPPLY DUCT MAYBE LOCATED IN AN ATTIC

OR BELOW CEILING RAFTERS AS SHOWN

RAFTERS

SUPPLY AIR DUCT

LOWERED

CEILING SUPPLY AIR

GRILLE

FINISHED CEILING

SURFACE

CLOSET WALL

WALL

SLEEVE

RAISED FLOOR

RETURN AIR

RETURN AIR

GRILLE

CLOSET INSTALLATION

MIS-550 B

Manual 2100-585

Page 11 of 19

WIRING – MAIN POWER

Refer to the unit rating plate for wire sizing information and maximum fuse or “HACR” type circuit breaker size. Each outdoor unit is marked with a “Minimum

Circuit Ampacity”. This means that the field wiring used must be sized to carry that amount of current.

Depending on the installed KW of electric heat, there may be two field power circuits required. If this is the case, the unit serial plate will so indicate. All models are suitable only for connection with copper wire. Each unit and/or wiring diagram will be marked “Use Copper

Conductors Only”. These instructions must be adhered to. Refer to the National Electrical Code (NEC) for complete current carrying capacity data on the various insulation grades of wiring material. All wiring must conform to NEC and all local codes.

The electrical data lists fuse and wire sizes (75° C copper) for all models including the most commonly used heater sizes. Also shown are the number of field power circuits required for the various models with heaters.

The unit rating plate lists a “Maximum Time Delay

Relay Fuse” or “HACR” type circuit breaker that is to be used with the equipment. The correct size must be used for proper circuit protection and also to assure that there will be no nuisance tripping due to the momentary high starting current of the compressor motor.

The disconnect access door on this unit may be locked to prevent unauthorized access to the disconnect. To convert for the locking capability, bend the tab located in the bottom left-hand corner of the disconnect opening under the disconnect access panel straight out. This tab will now line up with the slot in the door.

When shut, a padlock may be placed through the hole in the tab preventing entry.

See “Start Up” section for important information on three phase scroll compressor start ups.

See Tables 3 & 4 for Electrical Specifications.

Low Voltage Connection

These units use a 24-volt AC low voltage circuit.

The “R” terminal is the hot terminal and the “C” terminal is grounded.

“G” terminal is the fan input.

“Y” terminal is the compressor input for cooling

1-Stage units only

“W1” terminal is the 1st stage electric heat.

“W2” terminal is the 2nd stage heat (if equipped).

“E”, “F”, “Y2” & “A” Used with ECONWMT Economizer.

“1” NO (normally open) lockout alarm.

“2” NC (normally closed) lockout alarm.

“3” COM lockout alarm.

“4” & “5

” dirty filter alarm NC (normally closed).

“6” Used with MD4000 only; do not use for anything else!

“Y1” & “7” Used with ECONWMT Economizer; do not use for anything else!

“8” & “9” ECON Fail Alarm.

Manual 2100-585

Page 12 of 19

WIRING – LOW VOLTAGE WIRING

230/208V, 1 phase and 3 phase equipment dual primary voltage transformers. All equipment leaves the factory wired on 240V tap. For 208V operation, reconnect from 240V to 208V tap. The acceptable operating voltage range for the 240 and 208V taps are:

TAP RANGE

240

208

253 – 216

220 – 187

NOTE: The voltage should be measured at the field power connection point in the unit and while the unit is operating at full load (maximum amperage operating condition).

For H model units with T or W vent option economizers, refer to the MV4000 Series Lead/Lag Controller manual

2100-571 for low voltage connections diagrams.

Factory installed T and W vent option are wired per

Figure 7 of 2100-571. T and W vent option economizers

CAN NOT be used with MD4000 Lead/Lag Controllers.

For H model units with F or G vent option economizers, refer to the MD 4000 Series Lead/Lag Controller manual 2100-574 for low voltage connections diagrams.

F and G vent option economizers MUST be used with the MD4000 Lead/Lag Controller. No other Lead/

Lag Controller or thermostat is compatible with this economizer. Factory installed F and G vent option economizers are wired per Figure 2 of 2100-574.

DIRTY FILTER SWITCH & RELAY

These units include a dirty filter switch and relay. The alarm output of relay is normally closed, open on alarm and is connected to terminals 4 and 5 of the unit low voltage terminal block.

ECONOMIZER FAIL TIME DELAY RELAY

NOTE: Applies only to units with economizers.

These units employ a time delay relay used in conjunction with the 100% Economizers to provide an economizer fail alarm. The alarm output is connected to terminals 8 and 9 of the low voltage terminal block.

The time delay should be set to no less than 3 minutes to ensure no nuisance alarms.

TIMER TO BE

SET HERE



MIS-3054

MIS-3054

THESE UNITS REQUIRE R-410A

REFRIGERANT AND POLYOL

ESTER OIL.

GENERAL:

1. Use separate service equipment to avoid cross contamination of oil and refrigerants.

2. Use recovery equipment rated for R-410A

refrigerant.

3. Use manifold gauges rated for R-410A (800 psi/250 psi low).

4. R-410A is a binary blend of HFC-32 and HFC-125.

5. R-410A is nearly azeotropic - similar to R-22 and

R-12. Although nearly azeotropic, charge with liquid refrigerant.

6. R-410A operates at 40-70% higher pressure than

R-22, and systems designed for R-22 cannot withstand this higher pressure.

7. R-410A has an ozone depletion potential of zero, but must be reclaimed due to its global warming

potential.

8. R-410A compressors use Polyol Ester oil.

9. Polyol Ester oil is hygroscopic; it will rapidly absorb moisture and strongly hold this moisture in the oil.

10. A liquid line dryer must be used - even a deep vacuum will not separate moisture from the oil.

11. Limit atmospheric exposure to 15 minutes.

12. If compressor removal is necessary, always plug compressor immediately after removal. Purge with small amount of nitrogen when inserting plugs.

TOPPING OFF SYSTEM CHARGE

If a leak has occurred in the system, Bard

Manufacturing recommends reclaiming, evacuating

(see criteria above), and charging to the nameplate charge. If done correctly, topping off the system charge can be done without problems.

With R-410A, there are no significant changes in the refrigerant composition during multiple leaks and recharges. R-410A refrigerant is close to being an azeotropic blend (it behaves like a pure compound or single component refrigerant). The remaining refrigerant charge, in the system, may be used after leaks have occurred and then “top-off” the charge by utilizing the pressure charts on the inner control panel cover as a guideline.

START UP

REMEMBER: When adding R-410A refrigerant, it must come out of the charging cylinder/tank as a liquid to avoid any fractionation, and to insure optimal system performance. Refer to instructions for the cylinder that is being utilized for proper method of liquid extraction.

WARNING

Failure to conform to these practices could lead to damage, injury or death.

SAFETY PRACTICES:

1. Never mix R-410A with other refrigerants.

2. Use gloves and safety glasses, Polyol Ester oils can be irritating to the skin, and liquid refrigerant will freeze the skin.

3. Never use air and R-410A to leak check; the mixture may become flammable.

4. Do not inhale R-410A – the vapor attacks the nervous system, creating dizziness, loss of coordination and slurred speech. Cardiac irregularities, unconsciousness and ultimate death can result from breathing this concentration.

5. Do not burn R-410A. This decomposition produces hazardous vapors. Evacuate the area if

exposed.

6. Use only cylinders rated DOT4BA/4BW 400.

7. Never fill cylinders over 80% of total capacity.

8. Store cylinders in a cool area, out of direct

sunlight.

9. Never heat cylinders above 125°F.

10. Never trap liquid R-410A in manifold sets, gauge lines or cylinders. R-410A expands significantly at warmer temperatures. Once a cylinder or line is full of liquid, any further rise in temperature will cause it to burst.

IMPORTANT INSTALLER NOTE

For improved start up performance wash the indoor coil with a dish washing detergent.

HIGH PRESSURE SWITCH

All H**A/H**L wall mounted air conditioner series models are supplied with a remote reset for the high and low pressure switch. If tripped, this pressure switch may be reset by turning the thermostat off then back on again.

Manual 2100-585

Page 13 of 19

START UP (Continued)

CONDENSER FAN OPERATION

Applies to H42, H48 and H60 models only. NOTE:

Certain models may be equipped with a Low Ambient

Control (LAC), and if so equipped the condenser fan motor will have delay start until system refrigerant operationg pressure builds up. After starting, the fan motor may or may not cycle depending upon ambient

conditions. This is normal operation. The condenser fan motor on 230/208 volt, one and three phase, 60 HZ units is a two-speed motor that comes factory wired on high speed for peak performance. If ambient conditions permit, it can be reconnected to low speed (red wire) for lower sound level. See wiring diagram.

SERVICE HINTS

1. Caution owner/operator to maintain clean air filters at all times. Also, not to needlessly close off supply and return air registers. This reduces airflow through the system, which shortens equipment service life as well as increasing operating costs.

2. Check all power fuses or circuit breakers to be sure they are the correct rating.

3. Periodic cleaning of the outdoor coil to permit full and unrestricted airflow circulation is essential.

SEQUENCE OF OPERATION

COOLING – Circuit R-Y makes at thermostat pulling in compressor contactor, starting the compressor and outdoor motor. (See Note under Condenser Fan

Operation if equipped with Low Ambient Control.)

The G (indoor motor) circuit is automatically completed on any call for cooling operation or can be energized by manual fan switch on subbase for constant air circulation. On a call for heating, circuit R-W1 make at the thermostat pulling in heat contact for the strip heat and blower operation. On a call for second stage heat, R-W2 makes bringing on second heat contactor, if so equipped.

COMPRESSOR CONTROL MODULE

The compressor control module is standard on all models covered by this manual. The compressor control module is an anti-short cycle/lockout timer with high and low pressure switch monitoring and alarm relay output.

Adjustable Delay On Make And Break Timer

On initial power up or anytime power is interrupted to the unit, the delay on make period begins, which will be 2 minutes plus 10% of the delay on break setting.

When the delay on make is complete and the high pressure switch and low pressure switch is closed, the compressor contactor is energized. Upon shutdown, the delay on break timer starts and prevents restart until the delay on break and delay on make periods have expired.

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

Manual 2100-585

Page 14 of 19

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 this same operating cycle, the unit will go into manual

lockout condition and the alarm relay circuit will energize.

Recycling the wall thermostat 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 reenergize after the delay on make time delay has expired. If the low pressure switch remains open, or opens again for longer than 120 seconds, the unit will go into manual lockout condition and the alarm relay circuit will energize.

Recycling the wall thermostat resets the manual lockout.

Alarm Relay Output

Alarm terminal is output connection for applications where alarm relay is employed. This terminal is powered whenever the compressor is locked out due to

HPC or LPC sequences as described.

NOTE:Both high and low pressure switch controls are inherently automatic reset devices. The high pressure switch and low pressure switch cut out and cut in settings are fixed by specific air conditioner unit model. The lockout features, both soft and manual, are a function of the Compressor Control Module.

ADJUSTMENTS

Adjustable Delay on Make and Delay on Break Timer

The potentiometer is used to select Delay on Break time from 30 seconds to 5 minutes. Delay on Make (DOM) timing on power-up and after power interruptions is equal to 2 minutes plus 10% of Delay on Break (DOB) setting:

0.5 minute (30 seconds) DOB = 123 second DOM

1.0 minute (60 seconds) DOB = 126 second DOM

2.0 minute (120 seconds) DOB = 132 second DOM

3.0 minute (180 seconds) DOB = 138 second DOM

4.0 minute (240 seconds) DOB = 144 second DOM

5.0 minute (300 seconds) DOB = 150 second DOM

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

Typical Settings for Dual Unit Installation:

Unit 1: DOB set at 2 minutes, and DOM is 132 seconds

Unit 2: DOB set at 4 minutes, and DOM is 144 seconds

PRESSURE SERVICE PORTS

High & low pressure service ports are installed on all units so that the system operating pressures can be observed. A pressure table can be found later in the manual covering all models. It is imperative to match the correct pressure table to the unit by model number. See Table 2.

FAN BLADE SETTING DIMENSIONS

Shown in Figure 7 is the correct fan blade setting for proper air delivery across the outdoor coil. Refer to

Table 1 for unit specific dimension.

Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions below be checked and blade adjusted in or out on the motor shaft accordingly.

FIGURE 7

FAN BLADE SETTING

AIRFLOW

MIS-1724

"A"

TROUBLESHOOTING

R-410A

REFRIGERANT CHARGE

This unit was charged at the factory with the quantity of refrigerant listed on the serial plate. AHRI capacity and efficiency ratings were determined by testing with this refrigerant charge quantity.

The following pressure tables show nominal pressures for the units. Since many installation specific situations can affect the pressure readings, this information should only be used by certified technicians as a guide for evaluating proper system performance. They shall not be used to adjust charge. If charge is in doubt, reclaim, evacuate and recharge the unit to the serial plate charge.

REMOVAL OF FAN SHROUD

1. Disconnect all power to the unit.

2. Remove the screws holding both grilles, one on each side of unit, and remove grilles.

3. Remove screws holding fan shroud to condenser and bottom. Nine (9) screws.

4. Unwire condenser fan motor.

5. Slide complete motor, fan blade, and shroud assembly out the left side of the unit.

6. Service motor/fan as needed.

7. Reverse steps to reinstall.

TABLE 1

FAN BLADE DIMENSION

Model

H42A2 / H42L2

H48A2 / H48L2

H60A2 / H60L2

Dimension

A

1.75"

Manual 2100-585

Page 15 of 19

TABLE 2

COOLING PRESSURE TABLE

Air Temperature Entering Outdoor Coil °F

Model

H42A/L

H48A/L

H60A/L

Return Air Temp

(DB/WB)

75° DB

62° WB

80° DB

67° WB

85° DB

72° WB

75° DB

62° WB

80° DB

67° WB

85° DB

72° WB

75° DB

62° WB

80° DB

67° WB

85° DB

72° WB

Pressure

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

80

127

388

131

402

124

371

133

380

138

393

124

342

133

351

138

363

119

378

75

125

364

129

377

122

346

131

355

136

367

123

320

132

328

137

339

117

355

85

129

413

134

427

126

396

135

406

140

420

126

367

135

376

140

389

121

403

90

132

438

137

453

128

421

137

432

142

447

128

391

137

401

142

415

123

427

95 100 105 110 115 120

136

494

141

511

131

473

140

485

145

502

132

443

141

454

146

470

127

482

134

466

139

482

130

447

139

458

144

474

130

416

139

427

144

442

125

454

140

553

145

572

135

526

144

539

149

558

136

496

145

509

150

527

131

539

138

523

143

541

133

499

142

512

147

530

134

469

143

481

148

498

129

510

142

585

147

605

137

553

146

567

151

587

137

526

147

539

152

558

133

570

144

618

149

640

138

580

148

595

153

616

139

554

149

568

154

588

135

603

Low side pressure ± 4 PSIG

High side pressure ± 10 PSIG

Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge being in the system, the charge should be removed, system evacuated and recharged to serial plate charge weight.

NOTE: Pressure table based on high speed condenser fan operation. If condensing pressures appear elevated check condenser fan wiring. See “Condenser Fan Operation”.

Manual 2100-585

Page 16 of 19

TABLE 3

Electrical Specifications 1-Stage Compressor Models

MODEL

H42A2-A00, A0Z

H42L2 A05

A10

A15

H48A2-A00, A0Z

H48L2 A05

A10

A15

H60A2-A00, A0Z

H60L2 A05

A10

A15

Rated

Volts &

Phase

230/208-1

230/208-1

230/208-1

No.

Field

Power

Circuits

1

1

1

1 or 2

1

1

1

1 or 2

1

1

1

1 or 2 l

Minimum

Circuit

Ampacity

39

39

58

84

32

32

58

84

42

42

60

86

Single Circuit j

Maximum

External

Fuse or

Ckt. Brkr.

50

50

60

90

50

50

60

90

60

60

60

90

6

4

8

8

6

4

8

8

6

3

8

8 k

Field

Power

Wire

Size k

Ground

Wire

10

10

10

8

10

10

10

8

10

10

10

8 l

Minimum

Circuit

Ampacity j

Dual Circuit

Maximum

External

Fuse or Ckt.

Breaker k

Field Power

Wire Size k

Ground Wire

Size

Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B

58

58

60

26

26

26

60

60

60

30

30

30

6

6

6

10

10

10

10

10

10

10

10

10 j Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.

k Based on 75C copper wire. All wiring must conform to the National Electrical Code and all local codes.

l These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electrical code (latest version),

Article 310 for power conductor sizing.

Caution: When more than one field power 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 (3) current carrying conductors are in a raceway.

IMPORTANT: While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses and conductor wires in accordance with the National Electrical Code and all local codes.

Manual 2100-585

Page 17 of 19

TABLE 4

RECOMMENDED AIRFLOW

Model

H42A, H42L

H48A, H48L

H60A, H60L

Rated

CFM *

1400

1550

1700

Rated

ESP *

.45

.30

.40

* Rated CFM and ESP on high speed tap.

Recommended

Airflow Range

1600 - 1150

1750 - 1285

1950 - 1375

Factory Speed

Connection

High

High

High

TABLE 5

INDOOR BLOWER PERFORMANCE

Speed

ESP

(Inch H20) Dry Coil

0.0

1850

0.1

0.2

0.3

0.4

0.5

1775

1685

1590

1495

1400

High

H42/48

Low High

H60

Wet Coil Dry Coil Wet Coil Dry Coil Wet Coil Dry Coil Wet Coil

1800

1725

1640

1550

1460

1365

1605

1545

1460

1390

1310

1225

1555

1500

1415

1345

1270

1185

2080

2020

1925

1870

1755

1660

2015

1960

1865

1815

1705

1610

1505

1450

1395

1340

1225

1125

Low

1460

1405

1355

1300

1185

1085

Models

KW

5

10

15

TABLE 6

ELECTRIC HEAT

240V-1

Amps BTUH

20.8

41.6

62.5

17065

34130

51250

208V-1

Amps BTUH

18.1

36.2

54.0

12800

25600

38400

Manual 2100-585

Page 18 of 19

TABLE 7

OPTIONAL ACCESSORIES

EHWA05-A05 X X

EHWA05-A10 X X X

EHWA05-A15 X X X

CIRCUIT BREAKER

WMCB-08A X X

TABLE 8

VENT & CONTROL OPTIONS

Factory Installed

Option Number

N/A

B

T

W

F

G

Field Installed

Part Number

CMC-15

BOP-5

ECONWMT-T5*

ECONWMT-E5*

N/A

N/A

Start Kit (230V 1-Phase)

Blank Off Plate

100% Economizer Temperature

100% Economizer Enthalpy

100% Economizer DC Temperature

100% Economizer DC Enthalpy

X

X

X

X

X

X

Manual 2100-585

Page 19 of 19