A1 Horizontal Coils
“
Specifications:
- Product: A1 Refrigerant Horizontal Coils
- Model: IO-A1-002-REVA | CH-CP-DP-CX-DX
- Manufacturer: Aspen Manufacturing
- Address: 373 Atascocita Rd., Humble, TX 77396
- Phone: 800.423.9007
- Fax: 281.441.6510
- Website: www.aspenmfg.com
Product Usage Instructions:
1. Important Safety Instructions:
It is crucial to read and comply with all safety information
provided in the manual before operating or servicing the unit.
Follow the precautions and warnings carefully to prevent any
hazards or damage.
2. Inspection:
Prior to installation, inspect the unit for any visible damage
or defects. Ensure all components are in good condition before
proceeding with the installation process.
3. Codes & Regulations:
Verify that the installation is carried out in accordance with
local and national building codes. The responsibility lies with the
installer to ensure compliance with these regulations to prevent
any damage or safety hazards.
4. Installation Preparation:
Prepare the installation site by ensuring proper space and
access for the unit. Make necessary arrangements for electrical
connections and mounting requirements as per the manufacturer’s
guidelines.
Frequently Asked Questions (FAQ):
Q: Can children operate this appliance?
A: This appliance is not intended for use by persons with
reduced capabilities unless supervised by someone responsible for
their safety.
Q: What precautions should be taken during installation?
A: Disconnect all power sources before servicing or installing
the unit to prevent any potential hazards or damage.
Q: Are there specific cleaning instructions for the coils?
A: Refer to section 11 of the manual for detailed instructions
on how to clean the coils effectively and maintain optimal
performance.
“`
A1
HORIZONTAL
COILS
INSTALLATION GUIDE & OPERATION MANUAL
A1 REFRIGERANT HORIZONTAL COILS
CONTENTS
1. Important Safety Instructions 2. Inspection 3. Codes & Regulations 4. Installation Preparation 5. Condensate Drain Preparation 6. Coil Installation
6A. Dedicated Horizontal Plenum Orientation 6B. Mounting Dedicated Horizontal Plenum to Furnace 6C. Mounting Auxiliary Pan 7. Suction Line Connection 8. Metering Devices/Liquid Line Connection 8A. Flowrator Coils 8B. TXV Coils 9. Leak Check 10. System Charging 11. Coil Cleaning Instructions
373 Atascocita Rd.,
Humble, TX 77396
Phone: 800.423.9007
Fax: 281.441.6510
www.aspenmfg.com
IO-A1-002-REVA | CH-CP-DP-CX-DX
1
1. IMPORTANT SAFETY INSTRUCTION
Potential safety hazards are alerted using the following symbols. The symbol is used in conjunction with terms that indicate the intensity of the hazard. It is the responsibility of the owner and the installer to read and comply with the safety information and the instructions accompanying these symbols.
Read the precautions in this manual carefully before operating the unit.
Read the instructions in this manual carefully before operating the unit.
Read the instructions in this manual carefully before servicing the unit.
Read the instructions in this manual carefully before wiring the unit.
Warning or Caution
This symbol indicates a potentially hazardous
WARNING
situation, which if not avoided, could result in serious injury, property damage, product
damage or death.
This symbol indicates a potentially hazardous
CAUTION situation, which if not avoided, may result
in moderate injury or property damage.
Certified technicians or those individuals
WARNING meeting the requirements specified by NATE
may use this information. Property and product damage or personal injury hazard may occur without such background.
This appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children must be supervised to ensure that they do not play with the appliance.
Product designed and manufactured to permit installation in accordance with local and national building codes. It is the installer’s responsibility to ensure that the product is installed in strict compliance with the aforementioned codes. Manufacturer assumes no responsibility for damage (personal, product or property) caused due to installations violating regulations.
Disconnect ALL power before servicing or
WARNING installing this unit. Multiple power sources
may be present. Failure to do so may cause
property damage, personal injury, or death.
WARNING Do not bypass safety devices.
Do not use means to accelerate the
WARNING defrosting process or to clean, other than
those recommended by the manufacturer.
The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance or an operating electric heater). Do not pierce or burn.
Be aware that refrigerants may not contain an odor.
If any hot work is to be conducted on the
WARNING refrigerating equipment or any associated
parts, appropriate fire extinguishing equipment shall be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to the charging area.
This appliance is not intended for use at altitudes exceeding 2,000 meters.
2. INSPECTION
On receiving the product, visually inspect it for any major shipping related damages. Shipping damages are the carrier’s responsibility. Inspect the product labels to verify the model number and options are in accordance with your order. The manufacturer will not accept damage claims for incorrectly shipped product.
3. CODES & REGULATIONS
This product is designed and manufactured to comply with national codes. The product shall be installed in accordance with national wiring regulations. It is the responsibility of the installer to follow such codes and / or prevailing local codes / regulations. Compliance with national gas regulations shall be observed. The manufacturer assumes no responsibility for equipment installed in violation of any codes or regulations.
4. INSTALLATION PREPARATION
Read all the instructions in this guideline carefully while paying special attention to the WARNING and CAUTION alerts. If any of the instructions are unclear, clarify with a certified technician before proceeding. Gather all tools needed for successful installation of the unit prior to beginning the installation.
NOTICE
Absence of pressure/charge does not verify a leak. Check coils for leaks prior to installation.
Assure that the maximum operating pressure is considered when connecting any evaporator unit or condenser unit.
Refer to Section 10 of this manual for refrigerant charging instructions.
WARNING
PARTIAL UNITS shall only be connected to an appliance suitable for the same refrigerant.
These product families, models CP/DP, CX/DX, & CH/DH, are PARTIAL UNIT AIR CONDITIONERS, complying with PARTIAL UNIT requirements of UL 60335-2-40 Standard, and must only be connected to other units that have been confirmed as complying to corresponding PARTIAL UNIT requirements of this Standard (UL 60335-2-40).
The appliance shall be installed in accordance with national regulations. This product was tested at an external static pressure of 0.66″ W.C. None of the components in this product family are designed or approved to be suitable for outdoor use.
Refrigerant lines must be routed to allow the minimum required clearance of 24″ for service. Consult all appropriate regulatory codes prior to determining final clearances.
5. CONDENSATE DRAIN PREPARATION
Aspen recommends an auxiliary drain pan be provided and installed by the installing contractor, which should be properly sloped, installed according to code, and terminated in an area visible to the homeowner. The auxiliary pans provide extra protection to the area under the unit should the primary and secondary drain clogged up and overflow.
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As expressed in our product warranty;
WARNING ASPEN WILL NOT BE BILLED FOR ANY
STRUCTURAL DAMAGES CAUSE BY FAILURE TO FOLLOW THIS INSTALLATION REQUIREMENT.
Drain lines from the auxiliary drain pan
CAUTION should NOT be connected to the primary
drain line of the coil.
Do NOT install coils with standard
WARNING temperature drain pan with oil furnaces or
applications where temperature of the drain pan might exceed 290 °F. A metal pan should be installed. Failure to follow this warning may result in property damage and/or personal injury.
Install coils with the drain pan and/or casing on a flat, level surface. Slope the coil 1/4″ towards the drain. Condensate lines must be installed in accordance with building codes. It is the contractor’s responsibility to ensure proper condensate drainage at the time of the installation; Aspen bears no responsibility for damages caused by improper condensate management.
Some coils have primary and secondary
CAUTION drain ports on both sides of the pan to offer
installation flexibility, so ensure all threaded plugs are in present and tightened in any unused drain ports. These may be hidden behind the coil casing access door. Failure to do so may result in property water damage; it is the contractor’s responsibility to ensure these plugs are present and tight.
The drain lines must be installed with 1/4″ per foot pitch to provide free drainage. A condensate trap MUST be installed on the primary drain line to ensure proper drainage of the condensate. The trap must be installed in the drain line below the bottom of the drain pan. Fig. 5-1 illustrates the typical drain trap installation. Prior to installation, ensure drain pan hole is not obstructed. Additionally, Aspen recommends the drain lines be insulated to prevent sweating and dripping.
FIGURE 5.1 TYPICAL DRAIN LINE TRAP SETUP
CAUTION
Use Teflon tape to connect the drain lines to the threads in the drain pan. DO NOT USE SOLVENT BASED PIPE DOPE. THIS WILL REDUCE THE LIFE OF THE PAN.
The drain pan has primary (white) and secondary (red) drain connections. If a secondary drain line is required, it should be run separately from the primary and should terminate in a highly visible location. Condensate disposal through the secondary drain line indicates that the primary drain line is plugged and needs cleaning. If a secondary drain line will not be provided, plug the secondary drain. Drain plugs are NOT to be reused without plumbers’ tape or putty. Drain line
connection should be finger tightened, then turned no more than one complete turn as needed to ensure a firm connection. DO NOT over-tighten connection or damage may occur.
6. COIL INSTALLATION
The coil is manufactured with dry nitrogen
WARNING pre-charge. Release the pressure through the
Schrader valve test port prior to installation. If holding pressure is not present, return coil to distributor for exchange.
NOTICE
Refrigerant tubing must be routed to allow accessibility for service and maintenance of the unit.
Pipe-work including piping material, pipe routing, and installation shall include protection from physical damage in operation and service, and be in compliance with national and local codes and standards, such as ASHRAE 15, ASHRAE 15.2, IAPMO Uniform Mechanical Code, ICC International Mechanical Code, or CSA B52. All field joints shall be accessible for inspection prior to being covered or enclosed.
After completion of field piping for split systems, the field pipework shall be pressure tested with an inert gas and then vacuum tested prior to refrigerant charging, according to the following requirements:
The minimum test pressure for the low side of the system shall be the low side design pressure and the minimum test pressure for the high side of the system shall be the high side design pressure, unless the high side of the system, cannot be isolated from the low side of the system in which case the entire system shall be pressure tested to the low side design pressure.
Field-made refrigerant joints indoors shall be tightness tested. The test method shall have a sensitivity of 5 grams per year of refrigerant or better under a pressure of at least 0.25 times the maximum allowable pressure. No leak shall be detected. REFER TO SECTION 10 FOR SYSTEM CHARGING INSTRUCTIONS.
Clean coil fins with degreasing agent or mild detergent and rinse fins clean prior to installation. Refer to Section 10 of this manual for coil cleaning / maintenance guidance.
The refrigerant line sizes should be selected according to the recommendations of the outdoor unit manufacturer.
Care must be taken to ensure all connection joints are burrfree and clean. Failure to do so may increase chances of a leak. It is recommended to use a pipe cutter to remove the spun closed end of the suction line.
To reduce air leakage, rubber grommets may be present where the lines pass through the coil case. To avoid damage, remove grommets prior to brazing by sliding over the lines. Use a quenching cloth or allow the lines to cool before reinstalling the grommets.
Use of wet rags/quenching cloth is highly recommended to prevent weld-related damage to the casing and Schrader valve (if present).
CAUTION
Coil should be installed on the discharge side of the furnace.
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Aspen coils may include a Schrader valve
CAUTION on the suction manifold. Ensure that the
Schrader valve and valve core (where
present) are protected from heat to prevent leakage.
As mentioned elsewhere in this document, in
WARNING an application involving oil furnace a metal
drain pan MUST be used. Coils installed on
an oil furnace must have a minimum of six inches clearance
between the top of the furnace and bottom of the drain pan.
6A. DEDICATED HORIZONTAL COIL
ORIENTATION
CAUTION
Duct work must be installed in accordance with the local building codes. Aspen will not be liable for damages caused due by non conformance to local building codes.
1. CP/DP/CX/DX ORIENTATION
FIGURE 6A-2B HORIZONTAL RIGHT APPLICATION
Airflow enters through the inlet of the coil and exits at the outlet, entering the interior of the enclosure for routing to the attached ductwork.
FIGURE 6A-3A. – AIRFLOW DIRECTION
FIGURE 6A-1A. – HORIZONTAL LEFT APPLICATION
FIGURE 6A-1B. – HORIZONTAL RIGHT APPLICATION 1. CH ORIENTATION
6B. MOUNTING DEDICATED HORIZONTAL COIL TO FURNACE
1. For CP/DP, remove support bracket by loosening 2 screws on each side of the cabinet prior to installation and set aside. See Fig 6B-1
2. For CP/DP, assemble the mounting support plate and support bracket. Mount the support bracket and plate assembly on the lower portion of the cabinet opening. The assembly will guide in mounting the coil cabinet towards the furnace. See Fig 6B-2
3. For CH/DH, locate the air outlet of the furnace. Install transition duct. Align the horizontal flat coil into the transition duct. Place supply ductwork over the casing. See Fig 6A-2 a & b for correct orientation.
FIGURE 6A-2A – HORIZONTAL LEFT APPLICATION
IO-A1-002-REVA | CH-CP-DP-CX-DX
FIGURE 6B-1 – REMOVE SUPPORT BRACKET
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2. Mount the auxiliary pan bracket in the coil cabinet as per desired position. 2 holes are provided on each 4 corners of the coil cabinet for adjust-ability purposes.
FIGURE 6B-2 – MOUNT SUPPORT BRACKET & PLATE
4. For Style 1 CP/DP/CX/DX where coil cabinet is same height as furnace 3″x21″ plate is provided to secure the mounting of furnace and coil cabinet. See Fig 6B-3a.
For Style 2 CP/DP/CX/DX where coil cabinet is taller than furnace Transition plate is provided to match height of furnace. See Fig 6B-3b.
FIGURE 6C-2
3. Attached the auxiliary drain adapter on the auxiliary drain port. Adapter opening should be facing down.
FIGURE 6B-3A STYLE 1 COIL CABINET IS SAME HEIGHT AS FURNACE
FIGURE 6C-3
Refer to Furnace/Air Handler manufacturer literature for specific coil installation guidelines and recommendations.
Due to higher designed radiant heat, a field
CAUTION fabricated 6.0″ spacer (placed between the
furnace exit and the inlet of the evaporator) should be installed when matching up an Aspen coil with an ultra-low NOx (ULN) furnace.
7. SUCTION LINE CONNECTION
Aspen coils may include a Schrader valve
CAUTION on the suction manifold. Ensure that the
Schrader valve and valve core (where present) are protected from heat to prevent leakage.
FIGURE 6B-3B STYLE 2 COIL CABINET IS TALLER THAN FURNACE
6C. MOUNTING AUXILIARY PAN (CP/DP ONLY)
1. Using the 4-screw provided, Attached the fourmounting bracket on the auxiliary pan.
BRACKET
AUX PAN
FIGURE 6C-1
1. Ensure suction line connection joints are burr-free and clean. Failure to do so may increase chances of a leak and introduce contaminants to the system. It is recommended to use a pipe cutter to remove the
spun closed end of the suction line.
2. Swage (or use a field supplied coupler) and braze the field supplied refrigerant suction line tubing to the coil stub using approved industry practices.
WARNING
Do not attempt to touch brazed joints while hot. Severe burns may result.
8. METERING DEVICES/LIQUID LINE CONNECTION
Aspen coils are available with two kinds of metering devices a) flowrator or b) TXV. The following instructions are separated into sections by metering device
IO-A1-002-REVA | CH-CP-DP-CX-DX
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8A. FLOWRATOR COILS
nut to flowrater body.
I-6. Tighten nut using no more than 10 ft-lbs of torque. A flare nut open end wrench is recommended to evenly distribute the force across all six sides of the nut to ensure piston body is not deformed.
II. PISTON REPLACEMENT
NOTE: Photos are for basic illustration / reference purposes only. Actual equipment configuration may differ from that shown.
FIGURE 8A-1.B- FLOWRATOR ASSEMBLY COMPONENETS
CAUTION
Use Piston sizes recommended by the outdoor unit manufacturer whenever possible. The piston should be sized according to the capacity of the outdoor unit.
Failure to install the proper piston can lead
WARNING to poor system performance and possible
compressor damage.
I . INSTALLATION
NOTE: Photos are for basic illustration / reference purposes only. Actual equipment configuration may differ from that shown.
I-1. Disassemble flowrater body using two wrenches and unscrewing with a counterclockwise motion.
O-ring
I-2. Replace the Teflon O-ring (located between the halves).
Discard Schrader if present.
CAUTION
Be aware of the Teflon O-ring. Be sure to replace the O-ring to attain a proper seal.
(The Teflon O-ring is located between the two halves of the flowrater).
I-3. Slide the attachment nut onto the liquid line stub out.
I-4. Braze the stub-out portion to the liquid line and let cool.
O-ring
I-5. Taking care that the
white Teflon seal is still in place inside the flowrater body, firmly seat the stub and screw the attachment
FIGURE 8A-2
During some installations, a piston change may be required. If so, the installer MUST change the piston. Use piston sizes recommended by the outdoor unit manufacturer.
II-1. Evacuate the system as per manufacturer guidelines and recommendations.
II-2. Turn the 13/16″ nut once to release any residual pressure in the coil.
II-3. After ensuring that the coil is free of any residual pressure, disassemble the flowrater body completely using two wrenches. Take great care not to distort the feeder tubes. The wrench used to clasp the nut should be turned in counterclockwise direction to unscrew the nut.
II-4. Slide the 13/16″ nut over the line-set and separate the two halves of the flowrater.
II-5. Pull the piston out using a small wire or pick. Verify the piston size (size is typically stamped on the body of the piston – Fig 7.6). If a different piston size is required by the outdoor unit manufacturer, replace the piston using the small wire provided with the piston kit.
II-6. Replace the piston with one of the correct size. Do not force the new piston into the body. Make sure the piston moves freely in body.
Pay close attention to the piston orientation.
CAUTION The pointed end of the piston MUST go into
the distributor body, towards the coil. Failure to ensure this orientation will cause the piston to be bypassed during operation which might damage the outdoor unit.
II-7. Assemble the two halves correctly and ensure that the
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Teflon O-ring is present between the two halves (See I-5). Slide the 13/16″ nut onto the distributor body.
CAUTION
Be aware of the Teflon O-ring. Be sure to replace the O-ring to attain a proper seal.
(The Teflon O-ring is located between the two halves of the flowrater).
II-8. Tighten the nut to a torque of approximately 10 ft-lbs. Do NOT over-tighten the nut. Over-tightening could crack the
nut and/or impede the piston movement during operation.
II-9. If present, slide the rubber grommet back to position to prevent air leakage.
8B. TXV COILS
FIGURE 8B-1 – COMPONENTS OF A TYPICAL TXV ASSEMBLY
The sensing bulb and TXV body MUST be
WARNING protected from overheating during brazing.
The sensing bulb and TXV body must be
covered using a quench cloth or wet cloth when brazing. Pointing
the brazing flame away from the valve and sensing bulb provide partial protection only.
Ensure that the TXV selected is compatible
WARNING
with the refrigerant used in the outdoor system. The TXV body is marked with R410A or
R22
The valves should be sized according to the
WARNING
capacity of the outdoor unit. Failure to install the right valve can lead to poor performance
and possible compressor damage.
I. TXV BULB HORIZONTAL MOUNTING
The orientation and location of the TXV bulb has a major influence on the system performance.
Ensure that the TXV bulb is in direct contact
WARNING with the suction/vapor line. Gap between the
bulb and tube should be avoided. Failure to do so will impair the proper functioning of the TXV valve.
It is recommended that the TXV bulb be installed parallel to the ground (on a horizontal plane). The bulb position should be at 2 o’clock or 10 o’clock. Fig. 8B-2 shows the recommended position for the TXV bulb installation in the horizontal plane.
BULB POSITION AT 2 O’CLOCK OR 10 O’CLOCK
The TXV sensing bulb SHOULD be mounted on the suction line approximately 6″ from the TXV or coil housing using the metal clamp provided. In order to obtain a good temperature reading and correct superheat control, the TXV sensing bulb
must conform to ALL of the following criteria:
1. The sensing bulb MUST be in direct and continuous contact with the suction line.
2. The sensing bulb should be mounted horizontally on the suction line.
3. The sensing bulb MUST be mounted at the 2 o’clock or 10 o’clock position on the circumference of the suction line.
4. The sensing bulb MUST be insulated from outside air.
A properly mounted sensing bulb will prevent false readings caused by liquid refrigerant that may have formed inside the suction/vapor line. Insulation will protect the sensing bulb from
false readings due to contact with warm air.
II. TXV BULB VERTICAL MOUNTING
As recommended in Section
7B-I, the TXV sensing bulb
should be mounted in a
horizontal plane in relation to
the suction/vapor line. How-
ever, some installation config-
urations may require that the
sensing bulb be mounted ver-
tically. In this instance, place
the bulb opposite the piping
wall being hit by refrigerant
and oil leaving the distributor
tubes, and with capillary tubes
FIGURE 7B-3 – RECOMMENDED directed upwards as shown in
LOCATION FOR VERTICAL TXV BULB MOUNT
Fig. 7B-3.
If the TXV sensing bulb is mounted vertically;
CAUTION the capillary MUST be directed upwards. The
bulb must be mounted on the wall opposite to that being directly hit by the refrigerant and oil leaving the distributor tubes.
III. FIELD-INSTALLED TXV RETROFIT
Note: Photos are for basic illustration purposes only. Actual equipment configuration may differ from that shown.
WARNING
Do not attempt to touch brazed joints while hot. Severe burns may result.
When installing an expansion valve, it is not necessary to slide the coil out of the housing.
III-1. Disassemble the flowrater body using two wrenches. Unscrew the body with a counterclockwise motion.
FIGURE 8.12 – RECOMMENDED LOCATION FOR HORIZONTAL TXV BULB MOUNT
III-2. Remove the existing flowrater piston using a small wire or pick.
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III-3. Replace the Teflon O-ring seal in place (located between
the halves).
III-4. Inspect the TXV box to confirm that the valve is compatible with the refrigerant in the system.
Male (Inlet)
Female
(Outlet) III-5. Remove the valve from the box and note the location of the inlet side (threaded male port) and the outlet side (female swivel nut port).
When handling or manipulating the equalizer
CAUTION tube, take great care not to kink or make
extreme bends in the tubing.
Using a non-bleed expansion valve may
CAUTION require the use of a hard-start kit. Follow the
outdoor unit manufacturer’s guidelines.
9. LEAK CHECK
1. Following outdoor unit manufacturer instructions and recommendations, charge the system with dry nitrogen to a maximum pressure of 150 PSIG.
2. Check all brazed and screwon line connections by applying a soap solution to the joint. A leak will produce bubbles in the soap solution.
O-ring
III-6. After ensuring that the
Teflon O-ring seal is still in place inside the flowrater body, screw the female swivel nut onto the
flowrater body.
III-7. Slide attachment the nut onto the liquid line stub out (See Section 8.1.1, I-3, Fig. 8.4)
III-8. Braze the stub-out portion to the liquid line and let cool.
O-ring
III-9. Remove the additional Teflon O-ring seal from the box and place on the shoulder just inside the TXV inlet port. Screw the nut attached to the stub-out portion of the flowrater body onto the inlet port of the TXV.
III-10. Tighten all connections taking care to use proper back up. Tighten the nut to a torque of approximately 10-30 ft-lbs.
III-11. Remove the valve identification sticker from the valve and place it adjacent to the Aspen model number on unit name plate.
III-12A. Some Aspen coils come with a Schrader valve on the suction line. If a Schrader port is present:
A. Remove the valve stem from the Schrader port mounted on the suction line.
B. Screw flare nut on TXV equalization tube on to the Schrader
valve stem.
3. If any leaks are discovered, remove nitrogen pressure and repair leaks. Repeat steps 1-3.
4. With no leaks or weak connections present, evacuate the system and charge as per the outdoor unit manufacturer instructions and specifications.
10. SYSTEM CHARGING
An improperly charged system will likely
CAUTION cause loss in system performance and may
damage the compressor.
CAUTION
Refer to outdoor unit manufacturer charging guidelines and recommendations. The recommendations given below are general in nature and are NOT to supersede outdoor unit manufacturer specifications.
Where addition of charge is required to complete installation, instructions on how to determine the additional REFRIGERANT CHARGE and how to complete the REFRIGERANT CHARGE on the label provided by the outdoor unit manufacturer adjacent to the nameplate if the compressor bearing unit. Interconnecting refrigerant piping length and diameter shall be taken into consideration.
PISTON / FIXED ORIFICE COIL:
Add refrigerant until the superheat measured at the outdoor unit suction/vapor line matches the superheat recommendations of the outdoor manufacturer.
TXV COILS:
If the unit is equipped with an adjustable TXV, add refrigerant until the subcooling measures at the outdoor unit liquid line matches the subcooling recommendations of the outdoor manufacturer. If the charge is unavailable charge the unit to a subcooling value of 8°F +/- 1°F.
When adjusting the TXV, the valve stem or
NOTICE adjusting screw should not be adjusted more
than a ¼ turn at a time. To adjust superheat, turn the valve stem clockwise to increase and counterclockwise to decrease.
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1. If subcooling and superheat are low, adjust TXV to 8°F +/- 1°F superheat, then check subcooling.
2. If subcooling is low and superheat is high, add charge to raise subcooling to 8°F +/- 1°F then check superheat.
3. If subcooling and superheat are high, adjust TXV valve to 8°F +/- 1°F superheat, then check subcooling.
4. If subcooling is high and superheat is low, adjust TXV valve to 8°F +/- 1°F superheat and remove charge to lower the subcooling to 8°F +/- 1°F.
The TXV should NOT be adjusted at light load / ambient conditions of 60°F or below.
11. COIL CLEANING INSTRUCTIONS
Do not use means to accelerate the
WARNING defrosting process or to clean, other than
those recommended by the manufacture.
Aspen cased coils are equipped with a two-piece panel door to allow for cleaning and maintenance access. Remove one or both doors to access the coil for cleaning.
For both copper and aluminum tube coils, it is recommended to flush with the coil with water. There are coil cleaners that are available that contain corrosive chemicals, such as, but not limited to, chlorine and hydroxide, that are not approved for use on Aspen copper and aluminum tube coils.
SCAN
QR CODE
TO VISIT ASPEN’S WEBSITE
373 Atascocita Rd., Humble, TX 77396 Phone: 281.441.6500
Toll Free: 800.423.9007 Fax: 281.441.6510
www.aspenmfg.com
In keeping with its commitment to continuous improvement. Aspen Manufacturing reserves the right to make changes without notice and incurring obligation. To stay up-to-date with this product and Aspen’s trusted line
of coils, air handlers, and more, go to our website at www.aspenmfg.com.
Revised 06/2025. Subject to change without notice and without incurring obligation. IO-A1-002-REVA | CH-CP-DP-CX-DX
© 2025 Aspen Manufacturing. All Rights Reserved
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