Goodman Mfg ARPF, AEPT, ARPT User Manual

INSTALLATION & OPERATING
®
C
US
ARUF, ARPF, ARPT and AEPT
INSTRUCTIONS FOR
SERIES AIR HANDLER
Made in the USA by:
Goodman Manufacturing Company, L.P.
www.goodmanmfg.com or www.amana-hac.com
© 2003-2004 Goodman Manufacturing Company, L.P.
INDEX
INTRODUCTION ....................................................................2
REPLACEMENT PARTS ........................................................2
SAFETY INSTRUCTIONS ......................................................2
WARNINGS ............................................................................2
MODEL IDENTIFICATION ...................................................... 3
PRODUCT DESCRIPTION.....................................................3
UNIT INSPECTION.................................................................4
ELECTRIC HEAT....................................................................4
HKR INSTALLATION ..............................................................5
LOCATION .............................................................................. 5
DUCTWORK...........................................................................5
ELECTRICAL SUPPLY WIRE AND MOP...............................5
REFRIGERANT LINES...........................................................6
AEPT MOTOR ORIENTATION ...............................................8
CONVERSION TO DOWNFLOW...........................................8
CONVERSION TO HORIZONTAL..........................................9
CONDENSATE REMOVAL .....................................................9
ACHIEVING 2% LOW LEAKAGE RATE ..............................10
ARUF/ARPF MOTOR ...........................................................10
AEPT MOTOR.......................................................................10
THERMOSTAT WIRING DIAGRAMS ................................... 11
THERMOSTATS....................................................................13
INTRODUCTION Checking Product Received
Upon receiving the product, inspect it for damage from shipment. Claims for damage, either shipping or concealed, should be filed immediately with the shipping company. Check the product to determine if it is correct. In the event an incorrect product is shipped, it must be returned to the supplier and must NOT be installed. The manufacturer assumes no responsibility for installation of incorrectly shipped products.
Before Beginning Installation
Carefully read all instructions for the installation prior to installing product. Make sure each step or procedure is understood and any special considerations are taken into account before starting installation. Assemble all tools, hardware and supplies needed to complete the installation. Some items may need to be purchased locally. Make sure everything needed to install the product is on hand before starting.
REPLACEMENT PARTS Ordering Parts
When reporting shortages or damages, or ordering repair parts, give the complete product model and serial numbers as stamped on the product. Replacement parts for this product are available through your contractor or local distributor. For the location of your nearest distributor consult the white business pages, the yellow page section of the local telephone book, or contact the following:
SERVICE PARTS DEPARTMENT
GOODMAN MANUFACTURING COMPANY, L.P.
2550 NORTH LOOP WEST, SUITE 400
HOUSTON, TEXAS 77092
(713) 861 – 2500
IMPORTANT SAFETY INSTRUCTIONS Recognize Safety Symbols, Words, and Labels
The following symbols and labels are used throughout this manual to indicate immediate or potential hazards. It is the owner’s responsibility to read and comply with all safety information and instructions accompanying these symbols. Failure to heed safety information increases the risk of serious personal injury or death, property damage and/or product damage.
DANGER
IMMEDIATE HAZARDS WHICH WILL RESULT IN PROPERTY DAMAGE, PRODUCT DAMAGE, SEVERE PERSONAL INJURY OR DEATH.
WARNING
HAZARDS OR UNSAFE PRACTICES COULD RESUL T IN PROPERTY DAMAGE, PRODUCT DAMAGE, SEVERE PERSONAL INJURY OR DEATH.
CAUTION
HAZARDS OR UNSAFE PRACTICES WHICH MAY RESULT IN PROPERTY DAMAGE, PRODUCT DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
THE UNIT MUST HAVE AN UNINTERRUPTED, UNBROKEN ELECTRICAL GROUND TO MINIMIZE THE POSSIBILITY OF PERSONAL INJURY IF AN ELECTRICAL FAULT SHOULD OCCUR. THE ELECTRICAL GROUND CIRCUIT MAY CONSIST OF AN APPROPRIATELY SIZED ELECTRICAL WIRE CONNECTING THE GROUND LUG IN THE UNIT CONTROL BOX TO THE BUILDING ELECTRICAL SERVICE PANEL. OTHER METHODS OF GROUNDING ARE PERMITTED IF PERFORMED IN ACCORDANCE WITH THE “NA TIONAL ELECTRIC CODE” (NEC)/”AMERICAN NATIONAL STANDARDS INSTITUTE” (ANSI)/”NATIONAL FIRE PROTECTION ASSOCIATION” (NFPA) 70 AND LOCAL/STATE CODES. IN CANADA, ELECTRICAL GROUNDING IS TO BE IN ACCORDANCE WITH THE CANADIAN ELECTRIC CODE CSA C22.1. FAILURE TO OBSERVE THIS WARNING CAN RESULT IN ELECTRICAL SHOCK THAT CAN CAUSE PERSONAL INJURY.
WARNING
BEFORE SERVICING OR INST ALLING THIS EQUIPMENT , THE ELECTRICAL POWER TO THIS UNIT MUST BE IN THE “OFF” POSITION. CAUTION, MORE THAN ONE DISCONNECT MAY EXIST. FAILURE TO OBSERVE THIS WARNING MAY RESULT IN AN ELECTRICAL SHOCK THAT CAN CAUSE PERSONAL INJURY.
WARNING
DUE TO HIGH SYSTEM PRESSURE AND ELECTRICAL SHOCK POTENTIAL, INSTALLING AND THE SERVICING AIR CONDITIONING SYSTEMS CAN BE HAZARDOUS. ONLY TRAINED AND QUALIFIED PERSONNEL ARE PERMITTED TO INSTALL OR SERVICE THIS EQUIPMENT . OBSERVE ALL WARNINGS CONTAINED IN THIS MANUAL AND LABELS/TAGS ATTACHED TO THE EQUIPMENT.
IO-230F 08/04
2
WARNING
THIS PRODUCT IS FACTORY SHIPPED FOR USE WITH A 208-230/1/60 ELECTRICAL POWER SUPPLY. THIS AIR HANDLER MUST NOT BE RECONFIGURED TO OPERATE WITH ANY OTHER POWER SUPPLY.
MODEL IDENTIFICATION
AR U
F 024 00 A 1
A
Revision
WARNING
WHEN INSTALLING OR SERVICING THIS EQUIPMENT, SAFETY CLOTHING, INCLUDING HAND AND EYE PROTECTION, IS STRONGL Y ADVISED. IF INSTALLING THIS EQUIPMENT IN AN AREA THAT HAS SPECIAL SAFETY REQUIREMENTS (HARD HA TS ETC.), OBSERVE THESE REQUIREMENTS. TO PROTECT THE UNIT WHEN WELDING CLOSE TO THE PAINTED SURFACES, THE USE OF A QUENCHING CLOTH IS STRONGLY ADVISED TO PREVENT SCORCHING OR MARRING OF THE EQUIPMENT FINISH.
WARNING
THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY (“EPA”) HAS ISSUED VARIOUS REGULATIONS REGARDING THE INTRODUCTION AND DISPOSAL OF REFRIGERANTS INTRODUCED INTO THIS UNIT. FAILURE TO FOLLOW THESE REGULATIONS MA Y HARM THE ENVIRONMENT AND CAN LEAD TO THE IMPOSITION OF SUBSTANTIAL FINES. THESE REGULATIONS MAY VARY DUE TO THE PASSAGE OF LAWS. A CERTIFIED TECHNICIAN MUST PERFORM THE INSTALLATION AND SERVICE OF THIS PRODUCT. SHOULD QUESTIONS ARISE, CONTACT YOUR LOCAL EPA OFFICE.
Electrical Supply 208 - 230/1/60
Feature A = Initial Release B = Downflow C = Factory Sealed
Factory Installed Heat 00 = None
Normal Capacity 018 = 1½ Ton 024 = 2 Ton 030-032 = 2½ Ton 036 = 3 Ton 042 = 3½ Ton 048 & 049 = 4 Ton 060 & 061 = 5 Ton
Refrigerant Metering T = TXV F = Flowrater
Cabinet Finish P = Painted U = Unpainted Galvanized Steel
CARBON MONOXIDE POISONING HAZARD
Special Warning for Installation of Furnace or Air Handling Units in Enclosed Areas such as Garages, Utility Rooms or Parking Areas
Carbon monoxide producing devices (such as an automobile, space heater, gas water heater, etc.) should not be operated in enclosed areas such as unventilated garages, utility rooms or parking areas because of the danger of carbon monoxide (CO) poisoning resulting from the exhaust emissions. If a furnace or air handler is installed in an enclosed area such as a garage, utility room or parking area and a carbon monoxide producing device is operated therein, there must be adequate, direct outside ventilation.
This ventilation is necessary to avoid the danger of CO poisoning which can occur if a carbon monoxide producing device continues to operate in the enclosed area. Carbon monoxide emissions can be (re)circulated throughout the structure if the furnace or air handler is operating in any mode.
CO can cause serious illness including permanent brain damage or death.
B10259-216
-
Model Series AE = Air Handler with ECM™ Motor AR = Air Handler with PSC Motor
PRODUCT DESCRIPTION
With the exception of the ARPF024-00B-1, ARPF036-00B­1, ARPF048-00B-1 and the ARPF060-00B-1 (refered to in this manual as the “B” series), these air handlers are designed to be installed in the upflow, downflow, and horizontal orientations.
The “B” series air handlers are factory configured to be installed in the downflow orientation. DO NOT INSTALL THE “B” SERIES IN THE UPFLOW OR HORIZONTAL POSITION.
The “C” series airhandler is designed for low leak applications. These air handlers are designed for indoor use only and must only be installed in a weatherized area. DO NOT INSTALL OUTDOORS. Typical residential installations for this product include alcoves, basements, attics, crawl spaces, and closets. Other nonresidential applications are acceptable provided they comply with this manual and local/state codes.
IO-230F 08/04
3
When matched with a Goodman or Amana brand
3568101520
21
HEAT KIT NOMINAL kW
3568101520
21
HEAT KIT NOMINAL kW
condenser or heat pump, an ARI certified rating is available for many combinations.
The AEPT models are equipped with an ECMTM motor. An ECMTM motor is more efficient than a standard PSC motor and offers features such as soft-start, controlled off-delays, and constant CFM. Additional features and the associated controls are discussed later in this manual.
Electric heat is available for all models. This is an accessory and is not provided with the equipment. Use only the electric heat kits identified in the “Electric Heat” section of this manual. These air handlers are intended for use with a room thermostat. This thermostat is not supplied with this equipment. Only thermostats that use 24 VAC operating voltage can be used.
UNIT INSPECTION
Upon delivery, inspect the unit for damage. Any damage must be reported immediately to the carrier. Do not install this equipment if it is determined that the integrity or safety has been compromised by freight damage.
Using the table “Model Identification” section, check the equipment model number to ensure the unit is appropriately sized for the condenser unit.
If an incorrect unit is supplied, it must not be installed and it is to be returned to the supplier. The manufacturer assumes no responsibility for the installation of incorrectly delivered units.
The evaporator coil contains a high-pressure inert gas holding charge.
ELECTRIC HEAT
WARNING
REFER TO THE “INST ALLING ELECTRIC HEA T” SECTION OF THIS MANUAL AND THE INSTRUCTIONS PROVIDED WITH THE HEA T KIT FOR THE CORRECT INST ALLATION PROCEDURE.
CFM
3 5 6 8 10 15 20 21
600 18 28 35 41
800 13 21 26 31 42 1000 11 17 21 25 34 50 1200 9 14 18 21 28 42 56 62 1400 8 12 15 18 24 36 48 53 1600 7 10 13 15 21 31 42 46 1800 6 9 12 14 19 28 37 41 2000 5 8 11 12 17 25 34 37
HEAT KIT NOMINAL kW
Table 1
230/1/60 Supply Voltage - Temperature Rise Table °F
CFM
600 17 27 34 39
800 13 20 25 30 40 1000 10 16 20 24 32 48 1200 8 13 17 20 27 40 53 59 1400 7 11 14 17 23 34 46 51 1600 6 10 13 15 20 30 40 44 1800 6 9 11 13 18 27 36 39 2000 5 8 10 12 16 24 32 35
Table 2
220/1/60 Supply Voltage - Temperature Rise Table °F
CFM
600 16 25 32 37
800 12 19 24 38 38 1000 10 15 19 22 30 46 1200 8 13 16 19 25 38 51 56 1400 7 11 14 16 22 33 43 48 1600 6 9 12 14 19 28 38 42 1800 5 8 11 12 17 25 34 37 2000 5 8 10 11 15 23 30 34
Table 3
208/1/60 Supply Voltage - Temperature Rise Table °F
WARNING
THE ELECTRICAL CHARACTERISTICS OF THE AIR HANDLER, THE ELECTRIC HEAT KIT , AND THE SUPPLY POWER MUST AGREE, UNLESS USING HKR3 (3 PHASE) SERIES HEA T KIT. THIS AIR HANDLER DOES NOT HAVE FACTORY INSTALLED ELECTRIC HEAT. ELECTRIC HEAT IS AVAILABLE AS AN ACCESSORY. IF INST ALLING THIS OPTION, THE ONLY HEA T KITS THAT CAN BE USED ARE THE HKR SERIES AS INDICATED BELOW : NOTE: THE AMANA BRAND EHK, ECB, EDB, AND EDK KITS ARE NOT APPROVED FOR USE WITH THESE AIR HANDLERS.
The heating mode temperature rise is dependent upon the system airflow, the supply voltage, and the heat kit size (kW) selected. Use Tables 1-3 to determine the temperature rise (oF).
IO-230F 08/04
Note: For installations not indicated above the following formula is to be used:
TR = (kW x 3412) x (Voltage Correction) x 1.08 / CFM
Where: TR = Temperature Rise
KW = Heater Kit Actual kW 3412 = Btu per kW
Voltage Correction =.96 (230 Supply Volts)
=.92 (220 Supply Volts) =.87 (208 Supply Volts)
1.08 = Constant CFM = Measured Airflow
NOTE: The Temperature Rise Tables can also be used to determine the air handler airflow delivery. When using these tables for this purpose set the room thermostat to
4
maximum heat and allow the system to reach steady state
model
048-061
048, 060
036, 060
FIL 48-61
1
conditions. Insert two thermometers, one in the return air and one in the supply air. The temperature rise is the supply air temperature minus the room air temperature.
require external filtering. A washable filter is available as an accessory. To ensure optimum performance frequent
filter cleaning is advised. Refer to
Table 5 for the appropriate
filter.
Use HKR specification sheets to determine the HKR available for a given air handler.
HKR INSTALLATION
Follow instructions listed in Installation and Operating Instructions shipped with the heat kit.
LOCATION
WARNING
THIS AIR HANDLER IS DESIGNED FOR INDOOR INSTALLATION ONLY. DO NOT INSTALL OUTDOORS.
When installing this air handler consideration to minimize the length of refrigerant tubing is to be given. Do not install the air handler in a location either above or below the condenser that violates the instructions provided with the condenser. The clearance from a combustible surface to the unit is 0". However, service clearance is to take precedence. Allow a minimum of 24" in front of the unit for service clearance. When installing in an area directly over a finished ceiling (such as an attic), an emergency drain pan is required directly under the unit. See local and state codes for additional requirements. When installing this unit in an area that may become wet, elevate the unit with a sturdy, non-porous material. In installations that may lead to physical damage (i.e. a garage) it is advised to install a protective barrier to prevent such damage.
DUCTWORK
This air handler is designed for a complete supply and return ductwork system.
CAUTION
DO NOT OPERATE THIS PRODUCT WITHOUT ALL DUCTWORK ATTACHED.
To ensure correct system performance, the ductwork is to be sized to accommodate 375-425 CFM per ton of cooling with the static pressure not to exceed .5" WC. Inadequate ductwork that restricts airflow can result in improper performance and compressor or heater failure. Ductwork is to be constructed in a manner that limits restrictions and maintains suitable air velocity. Ductwork is to be sealed to the unit in a manner that will prevent leakage.
Return Ductwork. DO NOT TERMINATE THE RETURN DUCTWORK IN AN AREA THAT CAN INTRODUCE TOXIC, OR OBJECTIONABLE FUMES/ODORS INTO THE DUCTWORK. The return ductwork is to be introduced into the air handler bottom (upflow configuration).
Return Air Filters. Each installation must include a return air filter. This filtering may be performed at the air handler or externally such as a return air filter grille. Air handlers mounted in the downflow orientation, including “B” series,
ARUFor
ARPT
018-032 024, 036 n/a FIL 18-32 1 036-042 n/a 30 FIL 36-42 1
ARPF
model
AEPT
model
Filter
Number
Qty
Required
Table 5
ELECTRICAL SUPPLY WIRE AND MOP
WARNING
TO AVOID THE RISK OF FIRE OR EQUIPMENT DAMAGE, USE ONLY COPPER CONDUCTORS. BEFORE SERVICING OR INSTALLING THIS EQUIPMENT, THE ELECTRICAL POWER TO THIS UNIT MUST BE IN THE “OFF” POSITION AND ALL POWER SUPPLIES DISCONNECTED.
CAUTION
MORE THAN ONE DISCONNECT MAY EXIST. FAILURE TO OBSERVE THIS WARNING MAY RESULT IN AN ELECTRICAL SHOCK THAT CAN CAUSE PERSONAL INJURY OR DEATH.
WARNING
THE UNIT MUST HAVE AN UNINTERRUPTED, UNBROKEN ELECTRICAL GROUND TO MINIMIZE THE POSSIBILITY OF PERSONAL INJURY IF AN ELECTRICAL FAULT SHOULD OCCUR. THE ELECTRICAL GROUND CIRCUIT MAY CONSIST OF AN APPROPRIATELY SIZED ELECTRICAL WIRE CONNECTING THE GROUND LUG IN THE UNIT AND CONTROL BOX WIRE T O THE BUILDING’S ELECTRICAL SERVICE PANEL. OTHER METHODS OF GROUNDING ARE PERMITTED IF PERFORMED IN ACCORDANCE WITH THE “NATIONAL ELECTRIC CODE” (NEC)/”AMERICAN NATIONAL STANDARDS INSTITUTE” (ANSI)/”NATIONAL FIRE PROTECTION ASSOCIATION” (NFPA) 70 AND LOCAL/ STATE CODES. IN CANADA, ELECTRICAL GROUNDING IS TO BE IN ACCORDANCE WITH THE CANADIAN ELECTRIC CODE CSA C22.1. FAILURE TO OBSERVE THIS WARNING CAN RESULT IN ELECTRICAL SHOCK THAT CAN CAUSE PERSONAL INJURY OR DEATH.
Inspection of the Building Electrical Service
This unit is designed for single-phase electrical supply. DO NOT OPERATE ON A THREE-PHASE POWER SUPPLY. Measure the power supply to the unit. The supply voltage must be in agreement with the unit nameplate power requirements and within the range shown in Table 6.
Nominal Input Minimum Voltage Maximum Voltage
208/230 187 253
Table 6
IO-230F 08/04
5
Wire Sizing
Wire size is important to the operation of your equipment. Use the following check list when selecting the appropriate wire size for your unit.
Wire size must carry the Minimum Circuit Ampacity
(MCA).
Refer to the NEC (USA) or CSA (Canada) for wire sizing. The unit MCA for the air handler and the optional electric heat kit can be found on the unit Series and Rating Plate.
Wire size allows for no more than a 2% voltage drop
from the building breaker/fuse panel to the unit.
Refer to the latest edition of the National Electric Code or in Canada the Canadian Electric Code when determining the correct wire size. The following table shows the current carrying capabilities for copper conductors rated at 75oC with a 2% voltage drop. Use the Table 7 to determine the voltage drop per foot of various conductors.
Maximum Allowable Length in Feet
to Limit Voltage Drop to 2%*
Wire Size
(AWG)
14 75 50 37 NR NR NR NR NR 12 118 79 59 47 NR NR NR NR 10 188 125 95 75 63 54 NR NR
8 301 201 150 120 100 86 75 68 6 471 314 235 188 157 134 118 110
*Based on NEC 1996
Minimum Circuit Ampacity (MCA)
10 15 20 25 30 35 40 45
Table 7
Maximum Overcurrent Protection (MOP)
Every installation must include an NEC (USA) or CEC (Canada) approved overcurrent protection device. Also, check with local or state codes for any special regional requirements.
This protection can be in the form of fusing or HACR style circuit breakers. The Series and Rating Plate can be used as a guide for selecting the MAXIMUM overcurrent device.
NOTE: Fuses or circuit breakers are to be sized larger than the equipment MCA but not to exceed the MOP.
Electrical Connections – Supply Voltage USE COPPER CONDUCTORS ONLY.
A knockout is provided on the air handler top panel or side to allow for the entry of the supply voltage conductors. If the knockouts on the cabinet sides are used for electrical conduit, an adapter ring must be used in order to meet UL1995 safety requirements. An NEC or CEC approved strain relief is to be used at this entry point. The wire is to be sized in accordance with the “Electrical Wire and MOP” section of this manual. Some areas require the supply wire to be enclosed in conduit. Consult your local codes.
Air Handler Only (Non-Heat Kit Models)
The building supply connects to the stripped black and white wires contained in the air handler electrical compartment cavity. A ground screw is also contained in this area. Attach the supply wires to the air handler conductors as shown in the unit wiring diagram using appropriately sized solderless connectors or other NEC or CEC approved means.
Air Handler With Non-Circuit Breaker Heat Kits
A terminal block is provided with the HKR kit to attach the supply and air handler connections. Follow the HKR Installation Manual and wiring diagram for complete wiring details.
Air Handler With Heat Kits Containing a Circuit Breaker.
HKR models with a “C” suffix contain a circuit breaker(s). The air handler has a plastic cover on the access panel that will require either one or both sections to be removed to allow the heat kit circuit breaker(s) to be installed. See the HKR Installation Instructions for further details. The air handler wires and supply wires are installed directly onto the HKR circuit breaker(s) as shown in the HKR Installation Manual and wiring diagram.
Low Voltage Connections
Several combinations of low voltage schemes are available, depending on the presence of a heat kit and whether the heat kit is single-stage or multi-staging. The low voltage connections are determined by whether the outdoor unit is a condenser or heat pump. The 24V-control voltage connects the air handler to the room thermostat and condenser. Low voltage wiring is to be copper conductors. A minimum of 18AWG must be used for installations up to 50’ and 16AWG for installations over 50’. Low voltage wiring can be made through the top of the cabinet or through either side. See the “Thermostat Wiring” section of this manual for the ARUF, ARPF and ARPT models for typical low voltage wiring connections. The Supplemental Installation Manual included with the AEPT product shows the wiring diagrams for these models.
REFRIGERANT LINES
WARNING
TO PROTECT THE UNIT WHEN WELDING CLOSE TO
THE PAINTED SURFACES, THE USE OF A QUENCHING
CLOTH IS STRONGLY ADVISED TO PREVENT
SCORCHING OR MARRING OF THE EQUIPMENT FINISH.
SOLDER WITH A MINIMUM OF 5% SILVER IS
RECOMMENDED.
Tubing Preparation
All cut ends are to be round, burr free, and cleaned. Failure to follow this practice increases the chances for refrigerant leaks. The suction line is spun closed and requires pipe cutters to cut off the closed end.
Post Brazing
Quench all welded joints with water or a wet rag.
IO-230F 08/04
6
Piping Size
For the correct tubing size, follow the specification for the condenser/heat pump.
WARNING
THIS COIL IS SHIPPED UNDER PRESSURE. FOLLOW THESE INSTRUCTIONS TO PREVENT INJURY (SEE
FIGURES 1 AND 2).
Evaporator Coil Metering Devices
Flowrater Models (ARUF and ARPF) For most installations no change to the flowrater orifice is required. In mix-matched applications (condenser/heat pump is a different tonnage than the air handler), a different flowrater orifice may be required. See the Goodman piston kit chart PKC-00 or latest revision. Consult your local distributor for the details regarding mix-matched orifice sizing.
1. Loosen the 13/16 nut 1 TURN ONLY. No pressure loss indicates possible leak.
2. Remove the nut and discard the black or brass cap.
3. Remove the check piston to verify it is correct. See piston kit chart in instructions.
4. Use a tube cutter to remove the spin closure on the suction line.
5. Remove the tailpiece clamped to the exterior.
6. Slide the 13/16 nut into position. Braze tailpiece to the liquid tube.
7. Insert the suction line into the connection, slide the insulation and the rubber grommet at least 18" away from the braze joint.
8. AFTER THE TAILPIECE HAS COOLED, position the white Teflon seal and hand tighten the nut.
9. Torque the 13/16 nut to 20-30 ft-lbs. [2.77-4.15 meter kg].
10. Replace suction line grommet and insulation.
PLASTIC or BRASS CAP
13/16" NUT
APPLY FLOWRATER GASKET FOR AIR TIGHT APPLICATION
TXV Models (ARPT and AEPT)
IMPORTANT NOTE: In order to prevent damage to the sensing bulb, it is not permanently installed in the factory. This bulb is to be removed prior to brazing. Place in proper location after braze joint has cooled (Figure 3).
1. Loosen the 13/16 nut 1 TURN ONLY. No pressure loss indicates possible leak.
2. Remove the nut and discard the black or brass cap.
3. Remove large front panel and remove sensing bulb from suction manifold. TO PREVENT DAMAGE TO SENSING BULB, ENSURE BULB IS NOT NEAR FLAME OR IN CONTACT WITH SUCTION LINE OR MANIFOLD DURING BRAZING.
4. Use a tube cutter to remove the spin closure on the suction line.
5. Remove the tailpiece clamped to the exterior.
6. Slide the 13/16 nut into position (Figure 1). Braze tailpiece to liquid tube.
7. Insert the suction line into the connection, slide the insulation and the rubber grommet at least 18" away from the braze joint.
8. AFTER THE TAILPIECE HAS COOLED, position the white Teflon seal and hand tighten the nut.
9. Torque the 13/16 nut to 20-30 ft-lbs. [2.77-4.15 meter kg].
10. Replace sensing bulb to horizontal portion of suction line (Figure 3) just inside cabinet. Place bulb parallel with suction line in the 10 o’clock position. If 10 o’clock position is inaccessible, place in the 2 o’clock position. Secure bulb to line with strapping provided in literature envelope. Insulate sensing bulb to line with self­adhesive insulation provided in envelope.
11. Replace access panel, suction line grommet, and insulation.
REATTACH BULB HERE USING STRAPPING AND INSULATION PROVIDED
TAILPIECE
WHITE
TEFLON SEAL
Figure 1
SUCTION LINE
WITH SPIN CLOSURE
PISTON
Figure 3
For the majority of installations, no adjustment to the TXV setting is required. However, if the measured superheat is
RUBBER
GROMMET
less than 8° or greater than 20°, an adjustment is required. The adjustment stem is at the base of the valve (opposite the diaphragm) under the flare nut.
Figure 2
IO-230F 08/04
7
To increase the superheat (measured at the condenser
ARUFor ARPT
048-061
036, 060
DPI48-61/20
base valve), turn the stem clockwise (in). Similarly, to decrease the superheat, turn the stem counterclockwise (out). Use a ¼ “ refrigeration wrench for this function.
Note: Design point for the system is 10 degrees of superheat (measured at the condenser base valve) at 95 degree outdoor air. Charging Note: Air handlers with TXV’s (ARPT’s and AEPT’s) should be charged to 15 degrees of subcooling at the indoor inlet. This supercedes any subcooling value listed with condensing unit’s literature.
AEPT MOTOR ORIENTATION
If the unit is in the upflow position, there is no need to rotate the motor. If the unit is in the downflow or horizontal position, loosen motor mount and rotate motor as shown in Figure
4. Be sure motor is oriented with the female connections on the casing pointing down. If the motor is not oriented with the connections pointing down, water will collect in the motor and cause premature failure.
FRONT VIEW
SIDE VIEW
Refer to Figures 5 through 7 for the location of the components referenced in the following steps. Figure 5 illustrates the new installation location for the removed components.
1. Before inverting the air handler, remove all access panels, the coil rear channel bracket, and the filter close-off panel.
2. Remove the evaporator coil and the horizontal drain pan. Discard horizontal drain pan.
3. Install the provided plastic plug into the vacated access panel.
4. Remove the two (2) zee coil support brackets and insulation retaining brackets.
5. Remove the tie bracket.
6. Install the DPI Insulation Kit onto the bottom of the drain pan.
Return Air Side
Access Panel
of Unit
Rear Channel Bracket
Zee Coil Support Bracket
Coil Retaining Bracket
FOR OPTIONAL
SAFETY GND USE
MOUNTING BOLTS
FEMALE CONNECTIONS
Figure 4
AEPT Motor Orientation
CONVERSION TO DOWNFLOW
The ARPF “B” series product is factory equipped for downflow operation and no field conversion is required. It is recommeneded that the conversion to downflow be performed before placing the air handler in its final location and in an area that allows for access to all sides. To prevent the evaporator coil pan from “sweating” the DPI accessory insulation kit is to be used when performing this conversion. Note: The DPI kit is not supplied with this product and is to be purchased separately. See Table 8 for the correct DPI kit.
model
AEPT model Insulation Kit
018-032 n/a DPI18-30/20 036-042 30 DPI36-42/20
Table 8
Tie Bracket
NOTE: The filter provision is not applicable
in THIS downflow application.
Figure 5
7. Install the zee coil supports and the wrapper stiffeners.
8. Install the tie bracket.
9. Install the rear channel bracket.
10. To prevent possible condensate “blow off” the insulation retainers are to be laid into the evaporator coil pan as shown in Figure 6.
3" Flat Insulation
Retainer (Both Sides)
Figure 6
IO-230F 08/04
8
To complete the conversion, slide the evaporator coil into
the chassis and attach the three (3) access panels.
(Figure
7). CONVERSION TO HORIZONTAL
The “B” series product is not suitable for horizontal application and must not be used for this type of installation. The following describes converting to “Horizontal Left­Hand”. The only field modification required for conversion to “Horizontal Right-Hand” is the removal of the plastic knockouts in the horizontal panel drain connections.
TOP OF WRAPPER
7. Install the plastic plug removed in step 5 to the right side lower access panel and the oval shaped rubber gasket to the lower left access panel.
8. Reinstall the evaporator coil with the horizontal panel on the left side. Note: Push the assembly completely to the rear to ensure the engagement of the upflow pan with the rear channel bracket.
9. Install the “J” bracket (removed in step 2) to support the upflow pan to the tie channel.
10. Attach all panels and the refrigerant management device.
INSULATION JACKET
ZEE COIL SUPPORT
WRAPPER STIFFENER
DRAIN PAN INSULATION DPI KIT (HATCHED AREA)
BLOWER
NEOPRENE GASKET
MOTOR
Figure 7
As shown in Figure 8, it is recommended that the conversion to horizontal be performed before placing the air handler in its final location and in an area that allows for access to all sides.
1. Remove the (3) air handler access panels.
2. Remove the “J” shaped bracket that retains the evaporator coil.
3. Remove the flowrater (or TXV) from the lower left side access panel and slide out the evaporator coil and horizontal drain pan.
4. Remove the gasket from the horizontal pan drain connections.
5. Remove the oval shaped plastic plug from the left side access panel. Remove the oval shaped rubber gasket seal from the lower right side access panel.
6. The drain connections for the horizontal pan are sealed with a thin coating of plastic. Carefully knock out this plastic seal with a screwdriver and hammer. Note:
The upper drain will become the secondary drain which is mandatory in many municipalities .
Secondary Drain
Primary Drain
Figure 8
CONDENSATE REMOVAL
The drain pan has a primary and secondary drain connection (Figure 8). Condensate removal is performed by attaching a ¾” PVC pipe to the evaporator coil pan and terminated in accordance with local or state Plumbing/ HVAC codes. The installation must include a “P” style trap that is located as close as is practical to the evaporator coil. Exercise caution not to over-tighten the drain connection(s) in order to prevent possible damage to the evaporator drain pan. See Figure 9 for details of a typical condensate line “P” trap.
Installations that are above a finished ceiling may require a field supplied auxiliary drain pan. Consult local codes on this requirement.
DRAIN
CONNECTION
UNIT
FLEXIBLE
TUBING (HOSE
OR PIPE)
POSITIVE LIQUID
SEAL (REQ'D)
2" MINIMUM
3" MINIMUM
Figure 9
Use of a condensate removal pump is permitted when necessary. This condensate pump should have provisions for shutting off the control voltage should a blocked drain occur. A trap must be installed between the unit and the condensate pump.
IO-230F 08/04
9
IMPORTANT NOTE: THE EVAPORATOR COIL IS
123
N/A
4
Indoor Thermostat
567
8
COATED WITH OILS THAT MAY DISSOLVE STYROFOAM AND CERTAIN TYPES OF PLASTICS. THEREFORE, A REMOVAL PUMP OR FLOAT SWITCH MUST NOT CONTAIN ANY OF THESE MATERIALS.
Tip: Priming the “P” trap may avoid improper draining at the initial installation and at the beginning of the cooling season.
ACHIEVING 2% LOW LEAKAGE RATE
Ensure that the Neoprene gasket with PSA remains intact on all surfaces that the access panels are secured to. These surfaces are the entire length of the wrapper and areas between the upper tie plate, upper and lower access panels. Be sure that upper access panel breaker insert gasket is intact and also flowrator gasket is installed on the lower access panel. An additional drain hole cover is required.
ARUF/ARPF MOTOR
Motor Speed Adjustment The motors in all ARUF and ARPF motors are multi-speed
PSC motors. The color of the wire coming from the motor to the “COM” terminal on the control board defines in which speed the motor will operate. The black wire represents high speed, the red wire represents low speed, and the blue wire (select models only) represents medium speed. To change speeds, remove the wire attached to the “COM” terminal on the control board, and swap it with the wire (on terminal “M1” or “M2”) with the color that will give the desired speed.
NOTE: In some models, not all speed taps are allowable for certain electric heat applications. Refer to air handler Series and Ratings plate for minimum speed.
AEPT MOTOR
This section references the operation characteristics of the AEPT model motor only. The ECM control board is factory set with dipswitch #4 in the “ON” position and all other dipswitches in the “OFF” position. For most
applications this setting is to be changed according to the electric heat size and the outdoor unit selection.
The AEPT product uses a General Electric ECMTM motor. This motor provides many features not available on the traditional PSC motor. These features include:
• Improved Efficiency
• Constant CFM
• Soft Start and Stop
• Improved Humidity Control
Motor Speed Adjustment
Each ECMTM blower motor has been preprogrammed for operation at 4 distinct airflow levels when operating in Cooling, H.P. Heating, Backup Heating (Electric Heating), and Backup + H.P. Heating. Each mode has 4 levels to deliver different Air Flow CFM [L/s]. The adjustment is performed by changing the dipswitch(s) either to an “OFF” or “ON” position.
Dipswitch Functions
The AEPT air handler motor has an electronic control that contains an eight (8) position dip switch. The function of these dipswitches are shown in Table 9.
Dipswitch Number Function
Electric Heat
Cooling & Heat Pump CFM
CFM Trim Adjust
Table 9
CFM Delivery Tables 10 and 11 show the CFM output for dipswitch
combinations 1-2, and 5-6.
Model
AEPT30
AEPT36
and
AEPT60
Switch Switch
1 2
OFF OFF 1100 1210
ON OFF 850 935 OFF ON OFF OFF
ON OFF OFF ON
ON ON
EMERGENCY
(ELECTRIC)
HEAT
700 775
2050 2150 1750 1835 1600 1680 1200 1260
w/BACKUP
HEAT
HP
TABLE 10 - ELECTRIC HEAT CFM
Model CFM
AEPT30
AEPT36
and
Switch Switch
5 6
OFF OFF 2 ½ 1100
ON OFF 2 800 OFF ON OFF OFF
ON OFF
AEPT60 OFF ON
ON ON
Nominal Cooling
Tonnage
1 ½
5 1800 4 1580
3 ½
3
600
1480 1200
Table 11 - Cooling and Heat Pump CFM
Thermostat “Fan Only Mode”
During “Fan Only Mode” operation, the CFM output is 30% of the cooling setting.
CFM Trim Adjust
Minor adjustments can be made through the dip switch combination of 7-8. The following Table 12 shows the switch position for this feature.
CFM Switch 7 Switch 8
+10% ON OFF
-15% OFF ON
Table 12
IO-230F 08/04
10
Humidity Control
When using a Humidistat (normally closed), cut jumper PJ6 on the control board. The Humidistat will only affect cooling airflow by adjusting the Airflow to 85%.
Two Stage Heating
When using staged electric heat, cut jumper PJ4 on the control board.
Thermostat Wiring
Use thermostat wiring diagram Figures 10 thru 13 and those provided with the thermostat when making these connections. NOTE: DO NOT USE THESE DIAGRAMS FOR AEPT MODELS. SEE SUPPLEMENTAL INSTALLATION AND
OPERATING INSTRUCTIONS FOR AEPT MODELS.
ROOM THERMOSTAT
R
W Y
G
#18 GA. 4 WIRES WITH COOLING 3 WIRES WITHOUT
AR UNIT
CONTACTOR
COIL
R
G
W
Y
TO CONDENSING UNIT 24V. CONNECTIONS
#18 GA. 2 WIRES
RED
GREEN
WHITE
BLUE
Figure 10 - Low Voltage Wiring Diagram for Cooling Unit with optional heat kit 10KW and below
ROOM THERMOSTAT
W2
W
Y G R
AR UNIT
#18 GA. 4 WIRE WITH COOLING 3 WIRE WITHOUT
OUTDOOR THERMOSTAT (OPTIONAL)
#18 GA. 2 WIRES
CONTACTOR
COIL
CONDENSING UNIT 24V. CONNECTIONS
#18 GA. 2 WIRES
Y
W
R
G
RED
GREEN
WHITE
BROWN
BLUE
Figure 11 - Low Voltage Wiring Diagram for Cooling Unit with optional heat kit 15KW and above
IO-230F 08/04
11
AR/ARUF/ARPF/ARPT
18-60
10 KW & BELOW
HEAT PUMP
CW2O Y R
R
Y
O
W
B
H
L
I
U
T
E
E
E
E
R
L
A
D
L
N
O
G
W
E
TYPICAL H/P
ROOM THERMOSTAT
Y O C G R E
R
Y
O
W
W2
SEE
NOTE
FIGURE 12
#18 GA. 7 WIRE
AR UNIT
R
G
#3
BR
W
R
G
W
RED
GREEN
WHITE
#18 GA. 5 WIRE
(OPTIONAL)
OUTDOOR THERMOSTAT
CLOSE ON TEMPERATURE FALL
AR/ARUF/ARPF/ARPT
18-60
ABOVE 10 KW
HEAT PUMP
W2
C
B L U E
YO R
O
Y
W
H
I T E
R
R
E
E
A
L
D
N
L
G
O
E
W
BL
ROOM THERMOSTAT
Y CO
R
Y
O
W
BL
#18 GA. 5 WIRE
TYPICAL H/P
W2
NOTE
SEE
#3
EHR
RG E
BR
1
3
BL
BL
#18 GA. 6 WIRE NEEDED WHEN OT IS USED
#18 GA. 7 WIRE
AR UNIT
R
G
R
G
W
SEE
NOTE
2
#2
4
BL
BR
BL
BLUE
FIGURE 13
RED
GREEN
WHITE
BROWN
BLUE
OT-1
OT-2
(OPTIONAL)
OUTDOOR THERMOSTAT
CLOSE ON TEMPERATURE FALL
NOTES:
1) OUTDOOR THERMOSTAT (OT-1) SHOULD BE THE FIRST TO CLOSE AND THE LAST TO OPEN.
2) CONNECT WHITE AND BROWN WIRES FROM AIR­ HANDLER TOGETHER IF OT-2 IS NOT USED.
3) REMOVE WIRE WHEN USING OUTDOOR THERMOSTAT
NOMENCLATURE OT ---OUTDOOR THERMOSTAT (OPTIONAL) EHR -EMERGENCY HEAT RELAY (OPTIONAL)
#18 GA. 7 WIRE NEEDED WHEN TWO OT'S ARE USED
COLOR CODES R --RED Y --YELLOW BL-BLUE BR-BROWN O --ORANGE W -WHITE G --GREEN
Important: If outdoor thermostat is not used, tie white and brown wires from Air Handler together
IO-230F 08/04
12
THERMOSTATS
Note: Second Stage heat can be accomplished by multi­stage heating thermostat or the addition of an outdoor thermostat as shown in Figures 12 and 13.
Goodman part number CHT18-60 is a single-stage cool and single-stage heat thermostat.
Goodman part number HPT18-60 is a single-stage cool, two-stage heat pump thermostat. The first stage is heat pump heating and the second stage is optional electric heat.
If additional features are desired, such as digital or programmable capabilities, these thermostats are commercially available. Follow the thermostat manufacturer’s instruction for installation.
Drain pan and drain tubing has been leak checked.
Return and supply ducts are sealed.
Unit is elevated when installed in a garage or where flammable vapors may be present.
Unit is protected from vehicular or other physical damage.
Return air is not obtained from any areas where there may be objectionable odors, flammable vapors or products of combustion such as carbon monoxide (CO), which may cause serious personal injury or death.
REGULAR MAINTENANCE
START-UP PROCEDURE
Prior to start-up, ensure that all electrical connections are properly sized and tightened.
All panels must be in place and secured. For Air Tight application, neoprene gasket must be positioned at prescribed locations to achieve 2% leakage.
Tubing must be leak free.
Unit should be elevated, trapped and pitched to allow for drainage.
Low voltage wiring is connected.
Auxiliary drain is installed when necessary and pitched to allow for drainage.
DISCONNECT ALL POWER SUPPLIES BEFORE PERFORMING ANY SERVICE. NOTE THAT THERE MAY BE MORE THAN ONE POWER SUPPLY. FAILURE TO OBSERVE THIS WARNING CAN RESULT IN ELECTRICAL SHOCK THAT CAN CAUSE PERSONAL INJURY OR DEATH.
The only item to be maintained on a regular basis by the user is the circulating air filter(s). Filter should be cleaned or replaced regularly. A certified service technician must perform all other services.
WARNING
Quality Makes the Difference!
All of our systems are designed and manufactured with the same high quality standards regardless of size or efficiency. We have designed these units to significantly reduce the most frequent causes of product failure. They are simple to service and forgiving to operate. We use quality materials and components. Finally, every unit is run tested before it leaves the factory. That’s why we know. . . There’s No Better Quality.
Visit our websites at www.goodmanmfg.com or www.amana-hac.com for information on:
Products
Warranties
Customer Services
Parts
Contractor Programs and Training
Financing Options
© 2003-2004 Goodman Manufacturing Company, L.P.
IO-230F 08/04
13
Loading...