Bard H42A1 User manual

Manual 2100-568A
Page 1 of 23
INSTALLATION INSTRUCTIONS
WALL MOUNTED
PACKAGE AIR CONDITIONERS
MODELS
H42A1 H42L1
H48A1 H48L1
H60A1 H60L1
Manual : 2100-568A
Supersedes: 2100-568
File: Volume III Tab 16
Date: 04-12-12
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...Moving ahead just as planned.

Manual 2100-568A
Page 2 of 23
Contents
Figures
Figure 1 Fresh Air Damper Assembly.....................5
Figure 2 Unit Dimensions.......................................7
Figure 3 Mounting Instructions - H42, 48, 60.........8
Figure 4 Electric Heat Clearance ...........................9
Figure 5 Wall Mounting Instructions.....................10
Figure 6 Wall Mounting Instructions.....................10
Figure 7 Common Wall Mounting Installations..... 11
Figure 8 Fan Blade Setting...................................16
Tables
Table 1 Fan Blade Dimensions...........................16
Table 2 Cooling Pressure....................................17
Table 3 Electrical Specications H**A.................18
Table 4 Electrical Specications H**L .................19
Table 5 Recommended Airow ...........................20
Table 6 Indoor Blower Performance ...................20
Table 7 Maximum ESP Electric Heat Only.........20
Table 8 Electric Heat...........................................21
Table 9 Optional Accessories..............................22
Table 10 Vent & Control Options...........................23
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
Fresh Air Intake.........................................................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...........................................14
High Pressure Switch..............................................14
Three Phase Scroll Compressor.............................14
Phase Monitor.........................................................14
Condenser Fan Operation ......................................14
Service Hints...........................................................14
Sequence of Operation...........................................15
Compressor Control Module...................................15
Adjustments............................................................15
Pressure Service Ports...........................................15
Troubleshooting
Fan Blade Setting Dimensions................................16
Refrigerant Charge .................................................16
Removal of Fan Shroud..........................................16

Manual 2100-568A
Page 3 of 23
GETTING OTHER INFORMATION AND PUBLICATIONS
These publications can help you install the air
conditioner or heat pump. You can usually nd 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 ofAmerica
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, Refrigeration
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: [phone]
Fax: [phone]
NFPA National Fire ProtectionAssociation
Batterymarch Park
P.O. Box 9101
Quincy, MA02269-9901
Telephone: [phone]
Fax: [phone]
Manufactured under the following
U.S. Patent numbers:
5,485,878

Manual 2100-568A
Page 4 of 23
WALL MOUNT GENERAL INFORMATION
AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE
H 42 A 1 – A 10 X X X X X A
NOTE: Vent options X is without exhaust capability. May require separate eld supplied barometric relief in building
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.
KW
MODEL NUMBER CONTROL MODULES
(See Spec. Sheet)
VOLTS & PHASE
A - 230/208/60/1
B - 230/208/60/3
C - 460/60/3
REVISIONS
VENTILATION OPTIONS
X - Barometric FreshAir Damper (Standard)
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
X - One Inch Throwaway (Standard)
W - One Inch Washable
P - Two Inch Pleated
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)
CAPACITY
42 - 3
½ Ton
48 - 4 Ton
60 - 5 Ton
A - Right HandAir Conditioner
L - Left HandAir Conditioner

Manual 2100-568A
Page 5 of 23
DUCT WORK
All duct work, supply and return, must be properly sized
for the design airow 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 Maximum ESP of operation Electric Heat Table 7.
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 rst three feet of duct attached
to the outlet air frame is required. See Wall Mounting
Instructions and Figures 3 and 4 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 lter grille, lters must be of sufcient
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 1-inch throwaway lter is standard with each unit.
The lter slides into position making it easy to service.
This lter can be serviced from the outside by removing
the lter access panel. A 1-inch washable lter and
2-inch pleated lter are also available as optional
accessories. The internal lter brackets are adjustable
to accommodate the 2-inch lter by bending two (2)
tabs down on each side of the lter support bracket.
FRESH AIR INTAKE
All units are built with fresh air inlet slots punched in
the service door.
If the unit is equipped with a fresh air damper assembly,
the assembly is shipped already attached to the unit.
The damper blade is locked in the closed position.
To allow the damper to operate, the maximum and
minimum blade position stops must be installed. See
Figure 1.
All capacity, efciency and cost of operation
information is based upon the fresh air blank-off plate
in place and is recommended for maximum energy
efciency.
The blank-off plate is available upon request from the
factory and is installed in place of the fresh air damper
shipped with each unit.
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.
FIGURE 1
FRESH AIR DAMPER

Manual 2100-568A
Page 6 of 23
Clearances Required for Service Access
and Adequate Condenser Airow
MODELS LEFT SIDE RIGHT SIDE
H42A, H48A, H60A 20" 20"
H42L, H48L, H60L 20" 20"
Minimum Clearances Required to
Combustible Materials
MODELS SUPPLY AIR DUCT
FIRST THREE FEET CABINET
H42A, L / H48A, L
H60A, L 1/4" 0"
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.
INSTALLATION INSTRUCTIONS
WARNING
Failure to provide the 1/4 inch clearance
between the supply duct and a combustible
surface for the rst 3 feet of duct can result in
re causing damage, injury or death.
WALL MOUNTING INFORMATION
1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figure 3.
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 ange and the rst 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 3 for
details on opening sizes.
3. Locate and mark lag bolt locations and bottom
mounting bracket location. See Figure 3.
4. Mount bottom mounting bracket.
5. Hook top rain ashing, attached to front - right of
supply ange for shipping, under back bend of top.
6. Position unit in opening and secure with 5/16 lag
bolts; use 7/8 inch diameter at washers on the lag
bolts.
7. Secure rain ashing to wall and caulk across entire
length of top. See Figure 3.
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
airow to the outdoor coil. Additional clearance
may be required to meet local or national codes.

Manual 2100-568A
Page 7 of 23
MIS-3053
Panel
Door
Vent Option
Condenser
Air Outlet
Filter Access
Ventilation
Air
Front View
F
5.88
W
G
Electrical
Entrance
Low Voltage
High Voltage
Electrical
Entrance
Cond.
Panel
(Lockable)
Electric
Access
Heat
Heater
Inlet
Air
Built In
Rain Hood
4° Pitch
C. Breaker/
Disconnect
Access Panel
Drain
Side View
J
H
K
C
I
D
2.13
A
Entrances
Optional
Electrical
Side Wall
Mounting
Brackets
(Built In)
Return Air Opening
Location
Shipping
Supply Air Opening
Top Rain
Flashing
Bottom Installation
Bracket
Back View
.44
L
O
E
R
Q
S
S
S
S
N
T
S
MP
B
I
A
C
K
2.13
H
J
N
Q
PML
O
E
.44 W
5.88
F
G
R
SB
S
S
S
T
D
S
Side View
MIS-2488 C
Drain
Inlet
Air Air Outlet
Front View
Return Air Opening
Cond.
1
Back View
Condenser
Bracket
Installation
Bottom
(Built In)
Brackets
Mounting
Side Wall
Location
Shipping
Flashing
Entrances
Electrical
Optional
Entrance
Electrical
High Voltage
Entrance
Electrical
Air
Ventilation
Door
Vent Option
Panel
Filter Access
Low Voltage
Top Rain (Lockable)
Access Panel
Heat
Electric
Disconnect
Panel
Access
Heater
C. Breaker/
Built In
Rain Hood
4° Pitch
1
Supply Air Opening
FIGURE 2
All dimensions are in inches. Dimensional drawings are not to scale.
H**A
RIGHT
UNIT
H**L
LEFT
UNIT
Dimensions of Basic Unit for Architectural and Installation Requirements (Nominal)
MODEL WIDTH
(W) DEPTH (D) HEIGHT (H)
SUPPLY RETURN
A B C B E F G I J K L M N O P Q R S T
H42A, L
H42A, L
H42A, L 42.19 22.44 84.94 9.88 29.88 15.88 29.88 43.88 13.50 30.94 30.00 32.69 26.94 34.69 32.44 3.31 43.00 23.88 10.00 1.44 16.00 1.88

Manual 2100-568A
Page 8 of 23
FIGURE 3
H42A1, H42L1, H48A1, H48L1, H60A1, H60L1
MOUNTING INSTRUCTIONS
D
16" 16" 16" 16" 16"
1
7 8
"6
1 2
" 6
1 2
"2
1 8
"
7 8
"
1" 3"
4"
Typ.
4"
Typ.
6
1 2
"30"
E
16"
A CC
3
1
8
"
B
Wall Opening and Hole Location View
RETURN AIR
1
REQUIRED DIMENSIONS TO MAINTAIN 1/4" MIN. CLEARANCE FROM
COMBUSTIBLE MATERIALS
REQUIRED DIMENSIONS TO MAINTAIN 29
DUCT
COMBUSTIBLE MATERIALS
A B C DE
30 1/2 10 1/2 6 1/4 1 1/4 29 3/4
32 12 5 1/2 2
NOTES:
WALL STRUCTURE
1
SUPPLY AIR
IT IS RECOMMENDED THAT A BEADOF
OPENING
Right Side View
RAIN FLASHING
SILICONE CAULKING BE PLACED BEHIND
RECOMMENDED 1" CLEARANCE FROM
THE SIDE MOUNTING FLANGES AND UNDER TOP FLASHING AT TIME OFINSTALLATION.
TOP.
PANEL
HEATER ACCESS
FOUR SIDES OFSUPPLY
AIRDUCTIS REQUIRED
FROM COMBUSTABLE
WALL 1/4" CLEARANCE ONALL
MATERIALS
Supply Opening
FOAMAIRSEAL
SUPPLIED
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF
TOP
1
Return Opening
MIS-416 E
Dimension is 21" on 95" tall units.
2
Dimension is 10" on T48H1 & T60H1.
2
Dimension is 6" on T48H1 & T60H1.
3
3
" "

Manual 2100-568A
Page 9 of 23
FIGURE 4
ELECTRIC HEAT CLEARANCE
H42A1, H42L1, H48A1, H48L1, H60A1, H60L1
WARNING
A minimum of 1/4 inch clearance must be maintained between
the supply air duct and combustible materials. This is required for
the rst 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 re causing damage, injury or death.
NOTE 1: SIDE SECTION VIEW OF SUPPLYAIR
DUCT FOR WALL MOUNTED UNIT SHOWING 1/4
INCH CLEARANCE TO COMBUSTIBLE SURFACES.

Manual 2100-568A
Page 10 of 23
FIGURE 5
WALL MOUNTING INSTRUCTIONS
FIGURE 6
WALL MOUNTING INSTRUCTIONS
DUCT
OPENING
RETURN AIR
SUPPLY AIR
WOOD FRAME WALL INSTALLATION
OPENING
WALL BEFORE
MOUNT ON UNIT
OPENING
BEFORE INSTALLATION
BOTTOM MOUNTING
CONCRETE BLOCK WALL INSTALLATION
BRACKET. MOUNT ON
OPENING
WOOD OR STEELSIDING
OPENING
INSTALLING UNIT.
RETURN AIR
WALL STRUCTURE
RETURN AIR
SUPPLY AIR
FACTORY SUPPLIED
RAIN FLASHING.
SUPPLY AIR
MIS-548 A
SIDE VIEW
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
RETURN DUCT
L
2 x 6
PLATE OF WALL
ATTACH TO BOTTOM
1.000" CLEARANCE
C
STRUCTURAL STEEL
OVER FRAME
2 x 4'S, 2 x 6'S &/OR
EXTERIOR FINISH WALL
OPENING
1.000" CLEARANCE
OPENING
SUPPLY DUCT
INTERIOR FINISHED WALL
ATTACH TO TOP
FRAMING MATERIAL
PLATE OF WALL
OVER FRAME
IF REQUIRED
THIS STRUCTURAL MEMBER
LOCATED TO MATCH STUD
SPACING FOR REST OF WALL.
A SECOND MEMBER MAY BE
REQUIRED FOR SOME WALLS.
IF REQUIRED
ALL AROUND DUCT
ALL AROUND DUCT
SEE UNIT DIMENSIONS, FIGURE2,
FOR ACTUAL DIMENSIONS.
MIS-549 A
SEE FIGURE 3 – MOUNTING INSTRUCTIONS

Manual 2100-568A
Page 11 of 23
FIGURE 7
COMMON WALL MOUNTING INSTALLATIONS
LOWERED
RAISED FLOOR
RAFTERS
SUPPLY AIR
CEILING SURFACE
WALL SLEEVE
RETURN AIR
CLOSET WALL
GRILLE
FLASHING
RETURN AIR
FLASHING
SUPPLY DUCT MAYBE LOCATED INANATTIC
OR BELOW CEILING RAFTERS AS SHOWN
SUPPLY DUCT MAY BE LOCATED INANATTIC
SURFACE
RAFTERS
FINISHED CEILING
SUPPLY AIRDUCT
WALL
OPENING W/ GRILLE
SUPPLY DUCT MAYBE LOCATED INANATTIC
OR BELOW CEILING RAFTERS AS SHOWN
CEILING
RAIN
RETURN AIR
SLEEVE
WALL
SUPPLY AIRDUCT
RAFTERS
RAFTERS
RETURN AIR
OPENING W/ GRILLE
RAIN
FALSE WALL INSTALLATION
DUCTED SUPPLY
GRILLE
OUTSIDE
SPACE
FALSE WALL
RETURN AIR GRILLE
OUTSIDE
OR BELOW CEILING RAFTERS AS SHOWN
FINISHED CEILING SURFACE
RAIN
FLASHING
RAIN
FLASHING
RETURN AT UNITNO DUCT
WALL
SUPPLY AIRDUCT
CLOSETINSTALLATION
RETURN AIR
FINISHED
FINISHED CEILING SURFACE
MIS-550 B
FREE AIR FLOW
OUTSIDE
WALL
OUTSIDE
WALL
SUPPLY AIRDUCT
W/ GRILLE

Manual 2100-568A
Page 12 of 23
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 eld wiring
used must be sized to carry that amount of current.
Depending on the installed KW of electric heat, there
may be two eld 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 eld 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 Specications.
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 lter 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.
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
240 253 – 216
208 220 – 187
NOTE: Thevoltageshouldbemeasuredattheeld
power connection point in the unit and while
the unit is operating at full load (maximum
amperage operating condition).
For wiring size and connections, refer to MV4000
Controller Manual 2100-571.
DIRTY FILTER SWITCH & RELAY
These units include a dirty lter 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.
MIS-3054
TIMER TO BE
SET HERE


Manual 2100-568A
Page 13 of 23
START UP
THESE UNITS REQUIRE R-410A
REFRIGERANTAND 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. UsemanifoldgaugesratedforR-410A(800psi/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 signicant changes in the
refrigerant composition during multiple leaks and
recharges. R-410Arefrigerant 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.
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.
SAFETY PRACTICES:
1. Never mix R-410A with other refrigerants.
2. Useglovesandsafetyglasses,PolyolEsteroilscan
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 ammable.
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 ll 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 signicantly
at warmer temperatures. Once a cylinder or line is
full of liquid, any further rise in temperature will
cause it to burst.
WARNING
Failure to conform to these practices
could lead to damage, injury or death.

Manual 2100-568A
Page 14 of 23
START UP (Continued)
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.
THREE PHASE SCROLL COMPRESSOR
START UP INFORMATION
Scroll compressors, like several other types of
compressors, will only compress in one rotational
direction. Direction of rotation is not an issue with
single phase compressors since they will always start
and run in the proper direction.
However, three phase compressors will rotate in
either direction depending upon phasing of the power.
Since there is a 50-50 chance of connecting power
in such a way as to cause rotation in the reverse
direction, verication of proper rotation must be made.
Verication of proper rotation direction is made by
observing that suction pressure drops and discharge
pressure rises when the compressor is energized.
Reverse rotation also results in an elevated sound level
over that with correct rotation, as well as substantially
reduced current draw compared to tabulated values.
Verication of proper rotation must be made at the
time the equipment is put into service. If improper
rotation is corrected at this time, there will be no
negative impact on the durability of the compressor.
However, reverse operation for over one hour may have
a negative impact on the bearing due to oil pump out.
NOTE: If compressor is allowed to run in reverse
rotation for several minutes, the compressor’s
internal protector will trip.
All three phase compressors are wired identically
internally. As a result, once the correct phasing
is determined for a specic system or installation,
connecting properly phased power leads to the same
Fusite terminal should maintain proper rotation
direction.
The direction of rotation of the compressor may be
changed by reversing any two line connections to the
unit.
PHASE MONITOR
All units with three phase scroll compressors are
equipped with a 3 phase line monitor to prevent
compressor damage due to phase reversal.
The phase monitor in this unit is equipped with two
LEDs. If the Y signal is present at the phase monitor
and phases are correct the green LED will light.
If phases are reversed, the red fault LED will be lit and
compressor operation is inhibited.
If a fault condition occurs, reverse two of the supply
leads to the unit. Do not reverse any of the unit
factory wires as damage may occur.
CONDENSER FAN OPERATION
Applies to H42, H48 and H60 models only. 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
lters at all times. Also, not to needlessly close off
supply and return air registers. This reduces airow
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 airow circulation is essential.

Manual 2100-568A
Page 15 of 23
SEQUENCE OF OPERATION
COOLING – Circuit R-Y makes at thermostat pulling
in compressor contactor, starting the compressor
and outdoor motor. 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.
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, and 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xedbyspecic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 and 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.

Manual 2100-568A
Page 16 of 23
TROUBLESHOOTING
FIGURE 8
FAN BLADE SETTING
MIS-1724
TABLE 1
FAN BLADE DIMENSION
R-410A
REFRIGERANT CHARGE
This unit was charged at the factory with the quantity of
refrigerant listed on the serial plate. AHRI capacity and
efciency ratings were determined by testing with this
refrigerant charge quantity.
The following pressure tables show nominal pressures
for the units. Since many installation specic situations
can affect the pressure readings, this information should
only be used by certied 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.
Model Dimension
A
H42A1 / H42L1
H48A1 / H48L1
H60A1 / H60L1 1.75"
FAN BLADE SETTING DIMENSIONS
Shown in Figure 8 is the correct fan blade setting for
proper air delivery across the outdoor coil. Refer to
Table 1 for unit specic 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.

Manual 2100-568A
Page 17 of 23
TABLE 2
COOLING PRESSURE TABLE
Air Temperature Entering Outdoor Coil °F
Low side pressure ± 4 PSIG
High side pressure ± 10 PSIG
Tables are based upon rated CFM (airow) 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”.
Model Return Air
Temperature Pressure 75 80 85 90 95 100 105 110 115 120
H42A1/L1
75 deg. DB
62 deg. WB Low Side High Side 128 341 130 362 132 383 133 406 135 429 137 453 138 480 140 506 142 534 144 564
80 deg. DB
67 deg. WB Low Side High Side 137 350 139 371 141 393 142 416 142 435 146 465 148 492 150 519 152 548 154 578
85 deg. DB
72 deg. WB Low Side High Side 142 362 144 384 146 407 147 431 149 455 151 481 153 509 155 537 157 567 159 598
H48A1/L1
75 deg. DB
62 deg. WB Low Side High Side 125 349 127 370 129 391 131 415 133 440 136 467 137 495 140 526 143 557 146 590
80 deg. DB
67 deg. WB Low Side High Side 134 358 136 379 138 401 140 426 142 454 145 479 147 508 150 539 153 571 156 605
85 deg. DB
72 deg. WB Low Side High Side 139 371 141 392 143 415 145 441 147 467 150 496 152 526 155 558 158 591 161 626
H60A1/L1
75 deg. DB
62 deg. WB Low Side High Side 126 352 128 373 130 396 132 418 133 442 135 466 137 491 137 517 139 544 141 571
80 deg. DB
67 deg. WB Low Side High Side 135 361 137 383 139 406 141 429 142 453 144 478 146 504 147 530 149 558 151 586
85 deg. DB
72 deg. WB Low Side High Side 140 374 142 396 144 420 146 444 147 469 149 495 151 522 152 549 154 578 156 607

Manual 2100-568A
Page 18 of 23
TABLE 3
 Maximum size of the time delay fuse or HACR type circuit breaker for protection of eld wiring conductors.
Based on 75C copper wire. All wiring must conform to the National Electrical Code and all local codes.
 These “Minimum Circuit Ampacity” values are to be used for sizing the eld power conductors. Refer to the National Electrical code (latest version),
Article 310 for power conductor sizing.
Caution: When more than one eld 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.
* Top outlet supply option is available only factory installed and only on the selected models.
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.
Electrical Specications — H**A Series
Model
Rated
Volts
and
Phase
No.
Field
Power
Circuits
Single Circuit Dual Circuit

Minimum
Circuit
Ampacity
Maximum
External
Fuse
or Ckt. Brkr.
Field
Power
Wire
Size

Ground
Wire
Minimum
Circuit
Ampacity
Maximum
External Fuse
or Ckt. Brkr.
Field
Power
Wire Size
Ground
Wire Size
Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B
H42A1 - A00, A0Z
A05
A10
A15
A20
230/208-1
1
1
1
1 or 2
1 or 2
33
33
59
85
111
50
50
60
90
125
8
8
6
4
2
10
10
10
8
659 59 26 52 60 60 30 60 6 610 610 10 10 10
H42A1 - B00, B0Z
B09
B15
B18
230/208-3
1
1
1
2
25
34
53
N/A
35
35
60
N/A
8
8
6
N/A
10
10
10
N/A 34 28 35 30 8 10 10 10
H42A1 - C00, C0Z
C09
C15 460-3 1
1
1
13
18
27
15
20
30
14
12
10
14
12
10
H48A1 - A00, A0Z
A05
A10
A15
A20
230/208-1
1
1
1
1 or 2
1 or 2
37
37
59
85
111
50
50
60
90
125
8
8
6
4
2
10
10
10
8
659 59 26 52 60 60 30 60 6 610 610 10 10 10
H48A1- B00, B0Z
B09
B15
B18
230/208-3
1
1
1
2
29
34
52
N/A
40
40
60
N/A
8
8
6
N/A
10
10
10
N/A 34 28 40 30 8 10 10 10
H48A1 - C00, C0Z
C09
C15 460-3 1
1
1
14
18
27
20
20
30
12
12
10
12
12
10
H60A1 - A00, A0Z
A05
A10
A15
A20
230/208-1
1
1
1
1 or 2
1 or 2
41
41
59
85
111
60
60
60
90
125
8
8
6
4
2
10
10
10
8
659 59 26 52 60 60 30 60 6 610 610 10 10 10
H60A1 - B00, B0Z
B09
B15
B18
230/208-3
1
1
1
2
28
34
53
N/A
40
40
60
N/A
8
8
6
N/A
10
10
10
N/A 34 28 40 30 8 10 10 10
H60A1 - C00, C0Z
C09
C15 460-3 1
1
1
15
18
27
20
20
30
12
12
10
12
12
10

Manual 2100-568A
Page 19 of 23
TABLE 4
 Maximum size of the time delay fuse or HACR type circuit breaker for protection of eld wiring conductors.
Based on 75C copper wire. All wiring must conform to the National Electrical Code and all local codes.
 These “Minimum Circuit Ampacity” values are to be used for sizing the eld power conductors. Refer to the National Electrical code (latest version),
Article 310 for power conductor sizing.
Caution: When more than one eld 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.
* Top outlet supply option is available only factory installed and only on the selected models.
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.
Electrical Specications — H**L Series
Model
Rated
Volts
and
Phase
No.
Field
Power
Circuits
Single Circuit Dual Circuit

Minimum
Circuit
Ampacity
Maximum
External
Fuse
or Ckt. Brkr.
Field
Power
Wire
Size

Ground
Wire
Minimum
Circuit
Ampacity
Maximum
External Fuse
or Ckt. Brkr.
Field
Power
Wire Size
Ground
Wire Size
Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B
H42L1 - A00, A0Z
A05
A10
A15
230/208-1
1
1
1
1 or 2
33
33
59
85
50
50
60
90
8
8
6
4
10
10
10
8 59 26 60 30 6 6 10 10
H42L1 - B00, B0Z
B09
B15 230/208-3 1
1
1
25
34
53
35
35
60
8
8
6
10
10
10
H42L1 - C00, C0Z
C09
C15 460-3 1
1
1
13
18
27
15
20
30
14
12
10
14
12
10
H48L1 - A00, A0Z
A05
A10
A15
230/208-1
1
1
1
1 or 2
37
37
59
85
50
50
60
90
8
8
6
4
10
10
10
8 59 26 60 30 6 10 10 10
H48L1- B00, B0Z
B09
B15 230/208-3 1
1
1
29
34
52
40
40
60
8
8
6
10
10
10
H48L1 - C00, C0Z
C09
C15 460-3 1
1
1
14
18
27
20
20
30
12
12
10
12
12
10
H60L1 - A00, A0Z
A05
A10
A15
230/208-1
1
1
1
1 or 2
41
41
59
85
60
60
60
90
8
8
6
4
10
10
10
8 59 26 60 30 6 10 10 10
H60L1 - B00, B0Z
B09
B15 230/208-3 1
1
1
28
34
53
40
40
60
8
8
6
10
10
10
H60L1 - C00, C0Z
C09
C15 460-3 1
1
1
15
18
27
20
20
30
12
12
10
12
12
10

Manual 2100-568A
Page 20 of 23
TABLE 5
RECOMMENDED AIRFLOW
TABLE 6
INDOOR BLOWER PERFORMANCE
TABLE 7
MAXIMUM ESP OF OPERATION
ELECTRIC HEAT ONLY
Values shown are for units equipped with standard 1-inch throwaway lter or 1-inch washable lter.
Derate ESP by .15 for 2-inch pleated lters.
Model Rated
CFM * Rated ESP * Recommended Airow Range
Factory Speed
Connection
H42A, H42L 1400 .30 1600 - 1150 High
H48A, H48L 1550 .20 1750 - 1285 High
H60A, H60L 1650 .30 1950 - 1375 High
E.S.P.
In
H2O
H42A/L, H48A/L H60A/L
High Speed Low Speed High Speed Low Speed
Dry
Coil Wet Coil Dry Coil Wet Coil Dry Coil Wet Coil Dry Coil Wet Coil
.0
.1
.2
.3
.4
.5
1885
1770
1635
1500
1370
1250
1800
1665
1540
1400
1285
1150
1650
1550
1450
1350
1300
—
1600
1500
1400
1300
1175
—
2200
2100
2000
1875
1775
1650
2000
1900
1800
1700
1600
1475
1600
1525
—
—
—
—
1450
1375
—
—
—
—
Model H42A/L, H48A/L H60A/L
Outlet FRONT FRONT
Speed High Low High Low
-A0Z
-A05
-A10
-A15
-A20
.50
.50
.50
.50
.50
.50
.50
.50
.50
.45
.50
.50
.50
.50
.50
.50
.50
.50
.50
.40
-B0Z
-B09
-B15
-B18
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
-C0Z
-C09
-C15
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
* Rated CFM and ESP on high speed tap.