NOTE TO INSTALLER — READ THESE INSTRUCTIONS
CAREFULLY AND COMPLETELY before installing this unit.
Also, make sure the Owner’s Manual and Service Instructions are
left with the unit after installation.
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified personnel should install, repair, or service
air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters. All other operations should be performed
by trained service personnel. When working on air-conditioning
equipment, observe precautions in the literature, tags, and labels
attached to the unit, and other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for unbrazing operations. Have fire extinguisher
available for all brazing operations.
—1—
WARNING: Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion,
fire, electric shock, or other occurrences, which could
cause serious injury or death or damage your property.
Consult a qualified installer or service agency for information or assistance. The qualified installer or agency
must use only factory-authorized kits or accessories when
modifying this product.
Recognize safety information. This is the safety-alert symbol.
When you see this symbol on the product or in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words — DANGER, WARNING, CAUTION, and NOTE. Danger identifies the most serious hazards,
which will result in severe personal injury or death. Warning
indicates a condition that could cause serious personal injury or
death. Caution is used to identify unsafe practices, which would
result in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in
enhanced installation, reliability, or operation.
1. The power supply (volts, phase, and hertz) must correspond
to that specified on unit rating plate.
2. The electrical supply provided by the utility must be
sufficient to handle load imposed by this unit.
3. This installation must conform with local building codes
and with NEC (National Electrical Code). Refer to provincial and local plumbing or waste water codes and other
applicable local codes.
WARNING: Before performing service or maintenance
operations on system, turn off main power to unit. Turn
off accessory heater power switch if applicable. Electrical
shock could cause severe injury or death.
INTRODUCTION
The 601A and 602A heat pumps are fully self-contained and
designed for outdoor installation (See Fig. 1). Standard units are
shipped in a horizontal-discharge configuration for installation on
a ground-level slab. Units can be converted to downflow (vertical)
discharge configurations for rooftop applications. See Fig. 2 and 3
for unit dimensions.
RECEIVING AND INSTALLATION
I. CHECK EQUIPMENT
A. IDENTIFY UNIT
The unit model number and serial number are stamped on the unit
identification plate. Check this information against shipping papers.
B. INSPECT SHIPMENT
Inspect for shipping damage while unit is still on shipping pallet.
If unit appears to be damaged or is torn loose from its anchorage,
have it examined by transportation inspectors before removal.
Forward claim papers directly to transportation company. Manufacturer is not responsible for any damage incurred in transit.
Check all items against shipping list. Immediately notify the
nearest Bryant Air Conditioning office if any item is missing. To
prevent loss or damage, leave all parts in original packages until
installation.
II. PROVIDE UNIT SUPPORT
A. ROOF CURB
Install accessory roof curb in accordance with instructions shipped
with curb (See Fig. 5). Install insulation, cant strips, roofing, and
flashing. Ductwork must be attached to curb.
IMPORTANT: The gasketing of the unit to the roof curb is
critical for a watertight seal. Install gasketing material supplied
with the roof curb. Improperly applied gasketing also can result in
air leaks and poor unit performance.
Curb should be level to within 1/4 in. (See Fig. 6). This is
necessary for unit drain to function properly. Refer to accessory
roof curb installation instructions for additional information as
required.
B. SLAB MOUNT
Place the unit on a solid, level concrete pad that is a minimum of
4 in. thick with 2 in. above grade (See Fig. 7). The slab should
extend approximately 2 in. beyond the casing on all 4 sides of the
unit. Do not secure the unit to the slab except when required by
local codes.
C. GROUND MOUNT
The unit may be installed either on a slab or placed directly on the
ground if local codes permit. Place the unit on level ground
prepared with gravel for condensate discharge.
III. PROVIDE CLEARANCES
The required minimum service clearances are shown in Figs. 2 and
3. Adequate ventilation and outdoor air must be provided. The
outdoor fan draws air through the outdoor coil and discharges it
through the top fan grille. Be sure that the fan discharge does not
recirculate to the outdoor coil. Do not locate the unit in either a
corner or under an overhead obstruction. The minimum clearance
under a partial overhang (such as a normal house overhang) is 36
in. above the unit top. The maximum horizontal extension of a
partial overhang must not exceed 48 in. For extended overhangs,
provide a minimum clearance of 48 in.
IMPORTANT: Do not restrict outdoor airflow. An air restriction
at either the outdoor-air inlet or the fan discharge may be
detrimental to compressor life.
Do not place the unit where water, ice, or snow from an overhang
or roof will damage or flood the unit. Do not install the unit on
carpeting or other combustible materials. Slab-mounted units
should be at least 4 in. above the highest expected water and runoff
levels. Do not use unit if it has been under water.
IV. RIG AND PLACE UNIT
Rigging and handling of this equipment can be hazardous for many
reasons due to the installation location (roofs, elevated structures,
etc.)
Only trained, qualified crane operators and ground support staff
should handle and install this equipment.
When working with this equipment, observe precautions in the
literature, on tags, stickers, and labels attached to the equipment,
and any other safety precautions that might apply.
Follow all applicable safety codes. Wear safety shoes and work
gloves.
A. INSPECTION
Prior to initial use, and at monthly intervals, all rigging brackets
and straps should be visually inspected for any damage, evidence
of wear, structural deformation, or cracks. Particular attention
should be paid to excessive wear at hoist hooking points and load
support areas. Brackets or straps showing any kind of wear in these
areas must not be used and should be discarded.
B. INSTALLATION
1. Remove unit from shipping carton. Leave top shipping skid
on the unit as a spreader bar to prevent the rigging straps
from damaging the unit. If the wood skid is not available,
use a spreader bar of sufficient length to protect unit from
damage.
2. Position the lifting bracket assembly around the base of the
unit. Be sure the strap does not twist.
3. Place each of the 4 metal lifting brackets into the rigging
4. Thread lifting bracket strapping around bottom perimeter of
5. Tighten the tension buckle until it is taut. Lifting brackets
6. Attach field-supplied clevis or hook of sufficient strength to
7. Attach the 2 safety straps directly to the clevis or hook at the
8. Position lifting point directly over the unit’s center of
9. Lift unit. When unit is directly over the roof curb, remove
V. SELECT AND INSTALL DUCTWORK
The design and installation of the duct system must be in
accordance with the standards of the NFPA for installation of
non-residence type air conditioning and ventilating systems, NFPA
90A or residence type, NFPA 90B and/or local codes and
ordinances.
4 rigging brackets. DO NOT attach the safety straps to the
lifting brackets (See Fig. 8).
gravity.
the 2 safety straps. Lower the equipment onto the roof curb.
x
C00071
Unit4860—
Model 601A
Unit424860
Model 602A
Select and size ductwork, supply-air registers, and return air grilles
according to ASHRAE (American Society of Heating, Refrigeration, and Air Conditioning Engineers) recommendations.
The unit has duct flanges on the supply- and return-air openings on
the side of the unit.
When designing and installing ductwork, consider the following:
WARNING: For vertical supply and return units, tools
or parts could drop into ductwork and cause serious injury
or death. Install a 90 degree turn in the return ductwork
between the unit and the conditioned space. If a 90 degree
elbow cannot be installed, then a grille of sufficient
strength and density should be installed to prevent objects
from falling into the conditioned space. Units with
electric heaters require 90 degree elbow in supply duct.
1. All units should have field-supplied filters or accessory
filter rack installed in the return-air side of the unit.
Recommended sizes for filters are shown in Tables 1 and 2.
2. Avoid abrupt duct size increases and reductions. Abrupt
change in duct size adversely affects air performance.
IMPORTANT: Use flexible connectors between ductwork and
unit to prevent transmission of vibration. Use suitable gaskets to
ensure weather tight and airtight seal. When electric heat is
installed, use fireproof canvas (or similar heat resistant material)
connector between ductwork and unit discharge connection. If
flexible duct is used, insert a sheet metal sleeve inside duct. Heat
resistant duct connector (or sheet metal sleeve) must extend 24-in.
from electric heater element.
—5—
HVAC unit
Scre w
(NO TE A)
*Gask eting
outer flange
Flashing field
supplied
Roofing material
field supplied
Cant str ip
field supplied
base
Gask eting
inner flange*
Wood nailer*
Roofcurb*
Insulation (field
supplied)
Duct wo rk
field supplied
HVAC unit
Scre w
(NOTE A)
*Gask eting
outer flange
Flashing field
supplied
Roofing material
field supplied
Cant str ip
field supplied
base
Gask eting
inner flange*
Duct wo rk
field supplied
Wood nailer*
Roofcurb*
Insulation (field
supplied)
Roof
*Provided with roofcurb
Roof Curb for Small Cabinet
Note A: When unit mounting scre w is used,
retainer bra cke t must also be used.
B Typ.
5
/16"
44
C Typ.
Supply opening
(B x C)
D
*Provided with roofcurb
Roof Curb for Large Cabinet
Note A: When unit mounting scre w is used,
retainer bra cket must also be used.
R/A
A
Gask et around
Roof
S/A
duct
Short
Insulated
Retur n opening
(B X C)
deck pan
Support
UNIT SIZEODS CATALOG NUMBER
601A030-042602A030-036
601A048, 060602A042-060
NOTES:
1. Roof curb must be set up for unit being installed.
2. Seal strip must be applied, as required, to unit being installed.
3. Dimensions in ( ) are in millimeters.
4. Roof curb is made of 16-gauge steel.
5. Table lists only the dimensions, per part number, that have changed.
6. Attach ductwork to curb (flanges of duct rest on curb).
9. When unit mounting screw is used (see Note A), a retainer bracket must be used as well. This bracket must also be used when required by code for hurricane or seismic
conditions. This bracket is available through Micrometl.
3. Size ductwork for cooling air quantity (cfm). The minimum
air quantity for proper electric heater operation is listed in
Tables 3 and 4. Heater limit switches may trip at air
quantities below those recommended.
4. Seal, insulate, and weatherproof all external ductwork. Seal,
insulate and cover with a vapor barrier all ductwork passing
through conditioned spaces. Follow latest Sheet Metal and
AirConditioningContractorsNationalAssociation
(SMACNA) and Air Conditioning Contractors Association
(ACCA) minimum installation standards for residential
heating and air conditioning systems.
5. Secure all ducts to building structure. Flash, weatherproof,
and vibration-isolate duct openings in wall or roof according to good construction practices.
A. CONVERTING HORIZONTAL DISCHARGE UNITS TO
DOWNFLOW (VERTICAL) DISCHARGE UNITS
OPTIONAL
RETURN
AIR
OPENING
2"
EVAP. COILCOND. COIL
Fig. 7—Slab Mounting Detail
DETAIL A
OPTIONAL
SUPPLY
AIR
OPENING
C99096
WARNING: Before performing service or maintenance
operations on system, turn off main power to unit and
install lockout tag. Turn off accessory heater power
switch if applicable. Electrical shock could cause serious
injury or death.
1. Open all electrical disconnects and install lockout tag before
starting any service work.
2. Remove side duct covers to access bottom return and supply
knock outs.
NOTE: These panels are held in place with tabs similar to an
electrical knockout.
3. Use a screwdriver and hammer to remove the panels in the
bottom of the composite unit base.
4. Ensure the side duct covers are in place to block off the
horizontal air openings.
NOTE: Avoid abrupt duct size increases and reductions. Abrupt
change in duct size adversely affects air performance.
VI. PROVIDE FOR CONDENSATE DISPOSAL
NOTE: Ensure that condensate-water disposal methods comply
with local codes, restrictions, and practices.
The units dispose of condensate through a 3/4 in. NPT female
fitting that exits on the compressor end of the unit. Condensate
water can be drained directly onto the roof in rooftop installations
(where permitted) or onto a gravel apron in ground level installations. Install a field-supplied condensate trap at end of condensate
connection to ensure proper drainage. Make sure that the outlet of
the trap is at least 1 in. lower than the drain-pan condensate
connection to prevent the pan from overflowing. Prime the trap
with water. When using a gravel apron, make sure it slopes away
from the unit.
If the installation requires draining the condensate water away
from the unit, install a field-supplied 2-in. trap at the condensate
connection to ensure proper drainage. Condensate trap is available
as an accessory or is field-supplied. Make sure that the outlet of the
trap is at least 1 in. lower than the unit drain-pan condensate
connection to prevent the pan from overflowing. Connect a drain
trough using a minimum of field-supplied 3/4 -in. PVC or
field-supplied 3/4 -in. copper pipe at outlet end of the 2 -in. trap
(See Fig. 11). Do not undersize the tube. Pitch the drain trough
downward at a slope of at least 1 in. every 10 ft. of horizontal run.
Be sure to check the drain trough for leaks. Prime the trap at the
beginning of the cooling season start-up.
—7—
TABLE 1—PHYSICAL DATA
UNIT SIZE601A030601A036601A042601A048601A060
NOMINAL CAPACITY (ton)2-1/233-1/245
OPERATING WEIGHT (lb.)287291323353418
COMPRESSOR QUANTITY1
TYPERECIPROCATING COMPRESSORSCROLL COMPRESSOR
REFRIGERANTR-22
REFRIGERANT METERING DEVICEAccuRater®
Refrigerant (R-22) Quantity (lb.)5.67.68.07.859.3
ORIFICE ID (in.)0.0680.0780.0780.0880.093
ORIFICE OD (in.)0.042 (2)0.046 (2)0.052 (2)0.057 (2)0.061 (2)