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Table Of Contents
- Installation Instructions
- Safety Considerations
- Introduction
- Heater Packages
- Installation
- Check Equipment
- Mount Unit
- Nuisance sweating may occur if the unit is installed in a high humidity environment with low airflow.
- Downflow Installation
- Horizontal Installation
- A07565
- Fig. 2 – Slope Coil Unit in Upflow Application
- Horizontal Right Conversion of Units with Slope Coils
- 1. Remove blower and coil access panels and fitting panel (Fig. 6).
- 2. Remove coil mounting screw securing coil assembly to right side casing flange.
- 3. Remove coil assembly.
- 4. Lay fan coil on its right side and reinstall coil assembly with condensate pan down (Fig. 5).
- 5. Attach coil to casing flange using previously removed coil mounting screw.
- 6. Make sure pan cap in fitting door is properly seated on fitting door to retain low air leak rating of the unit.
- 7. Add gaskets from kit.
- 8. Align holes with tubing connections and condensate pan connections. Reinstall access panels and fitting panel.
- 9. Make sure liquid and suction tube grommets are in place to prevent air leaks and cabinet sweating. Install grommets after brazing.
- Horizontal Right Conversion of Units with A-Coils
- 1. Remove blower and coil access panels (Fig. 6).
- 2. Remove metal clip securing fitting panel to condensate pan. Remove fitting panel.
- 3. Remove 2 snap-in clips securing A-coil in unit.
- 4. Slide coil and pan assembly out of unit.
- 5. Remove horizontal drain pan support bracket from coil support rail on left side of unit and reinstall on coil support rail on right side of unit (Fig. 8).
- 6. Convert air seal assembly for horizontal right.
- a. Remove air seal assembly from coil by removing 4 screws (Fig. 6).
- b. Remove air splitter (B) from coil seal assembly by removing 3 screws (Fig. 7 inset).
- c. Remove filler plate (A) and install air splitter (B) in place of filler plate.
- d. Install filler plate (A) as shown in horizontal right application.
- e. Remove condensate troughs (C) and install on opposite tube sheets.
- f. Install hose onto plastic spout.
- 7. Install horizontal pan on right side of coil assembly.
- 8. Slide coil assembly into casing. Be sure coil bracket on each corner of vertical pan engages coil support rails.
- 9. Reinstall 2 snap-in clips to correctly position and secure coil assembly in unit. Be sure clip with large offsets is used on right side of unit to secure horizontal pan.
- 10. Remove two oval fitting caps from left side of the coil, access panel, and fitting panel.
- 11. Remove insulation knockouts on right side of coil access panel.
- 12. Remove 2 oval coil access panel plugs and reinstall into holes on left side of coil access panel and fitting panel.
- 13. Install condensate pan fitting caps (from Step 10) in right side of coil door making sure that cap snaps and seats cleanly on back side of the coil door. Make sure no insulation interferes with seating of cap.
- 14. Reinstall access and fitting panels, aligning holes with tubing connections and condensate pan connections. Be sure to reinstall metal clip between fitting panel and vertical condensate pan.
- 15. Make sure liquid and suction tube grommets are in place to prevent air leaks and cabinet sweating.
- A07566
- Fig. 3 – Slope Coil in Horizontal Left Application (Factory Configuration)
- Fig. 4 – A-Coil in Horizontal Left Application (Factory Configuration)
- Fig. 5 – Conversion for Horizontal Right Applications - Slope Coil
- Fig. 6 – Conversion for Horizontal Right Applications - A-Coil
- Manufactured and Mobile Home Housing Applications
- 1. Secure the fan coil to the structure using field-supplied hardware.
- 2. Allow a minimum of 24" (610 mm) clearance from access panels.
- 3. Recommended method of securing for typical applications:
- a. If fan coil is away from wall, attach pipe strap to top of fan coil using no. 10 self-tapping screws. Angle strap down and away from back of fan coil, remove all slack, and fasten to wall stud of structure using 5/16" lag screws. Typical both side...
- b. If fan coil is against wall, secure fan coil to wall stud using 1/8" (3 mm) thick right-angle brackets. Attach brackets to fan coil using no. 10 self-tapping screws and to wall stud using 5/16" lag screws (Fig. 9).
- Fig. 7 – Removal of Brackets on Modular Unit
- Fig. 8 – Drain Pan Support Bracket
- Fig. 9 – Mobile Home or Manufactured Housing Applications
- Air Ducts
- Electrical Connections
- Line Voltage Connections
- 24V Control System
- Connection To Unit
- Fig. 10 – Wiring Layout Air Conditioning Unit (Cooling Only)
- Fig. 11 – Wiring Layout Air Conditioning Unit (Cooling and 1-Stage Heat)
- Fig. 12 – Wiring Layout Heat Pump Unit (Cooling and 2-Stage Heat with No Outdoor Thermostat)
- Fig. 13 – Wiring Layout Heat Pump Unit (Cooling and 2-Stage Heat for Manufactured Housing)
- Transformer Information
- Heater Staging
- Refrigerant Tubing Connection and Evacuation
- 1. Cut tubing to correct length.
- 2. Insert tube into sweat connection on unit until it bottoms.
- 3. Braze connection using silver bearing or non-silver bearing brazing materials. Do not use solder (materials which melt below 800° F / 427° C). Consult local code requirements.
- 4. Evacuate coil and tubing system to 500 microns using a deep vacuum method.
- Refrigerant Flow-Control Device
- Disassembly
- 1. Use an adjustable wrench with a backup adjustable wrench to loosen Item # 3 (TXV equalizer line).
- 2. For Item #4 - Cut the wire tie and remove the black insulation. Remove the band from around the TXV bulb.
- 3. Cut the wire tie that holds the TXV equalizer line and bulb from the aluminum vapor header tube.
- 4. Remove 2 screws from the TXV bracket. Remove the TXV from the coil unit.
- Assembly
- 1. Mount the TXV bracket and TXV with the 2 screws removed during disassembly.
- 2. Connect Items #1 and #2 (TXV outlet and inlet respectively) and use an adjustable wrench with a backup wrench to tighten each nut. Tighten to between 10 and 20 ft-lbs.
- 3. Connect Item #3 and use an adjustable wrench with a backup adjustable wrench to tighten the flare nut. Tighten to approximately 12 ft-lbs.
- 4. Item # 4 - Reconnect the TXV bulb with a clamp and reinstall insulation around the TXV bulb and vapor tube.
- Fig. 16 – Mechanical TXV Removal
- 5. Use a wire tie to mount the 1/8" TXV equalizer and bulb tubes to the vapor header tube. Make sure that there is insulation between the aluminum vapor tube and copper tube.
- 6. Leak test the TXV fittings, then evacuate and charge the system to the required subcooling per the outdoor unit rating plate.
- Disassembly
- Condensate Drains
- Accessories
- Sequence of Operation
- Start-up Procedures
- Care and Maintenance
- Fig. 22 – Shipping Screws
- Table 2 – Electric Heater Static Pressure Drop (in. wc)
- Table 3 – Airflow Performance (CFM) Wet
- 1. Airflow based upon dry coil at 230V with factory-approved filter and electric heater (2 element heater sizes 018 through 036, 3 element heater sizes 042 through 060).
- 2. To avoid potential for condensate blowing out of drain pan prior to making drain trap: Return static pressure must be less than 0.40 in. wc. Horizontal applications of 042 - 060 sizes must have supply static greater than 0.20 in. wc.
- 1. Airflow based upon dry coil at 230V with factory-approved filter and electric heater (2 element heater sizes 018 through 036, 3 element heater sizes 042 through 060).
- 2. To avoid potential for condensate blowing out of drain pan prior to making drain trap: Return static pressure must be less than 0.40 in. wc. Horizontal applications of 042 - 060 sizes must have supply static greater than 0.20 in. wc.
FJ4: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
8
A11048
Fig. 15 – Motor Speed Selection
† electric heat airflow is same CFM as Tap 3, except 0 sec off delay
‡ high static applications, see airflow tables for max airflow
To change motor speeds disconnect the BLUE fan lead from motor
connector terminal #2 (factory default position) and move to desired
speed-tap; 1, 2, 3, or 5.
Speed-taps 1, 2, and 3 have a 90 second blower off time delay
pre-programmed into the motor. Speed-tap 4 is used for electric heat
only (with 0 second blower time delay) and the WHITE wire should
remain on tap 4. Speed-tap 5 is used for high static applications, but has
a 0 second blower time delay pre-programmed into the motor. See
Airflow Performance tables for actual CFM. Se
Fig. 15 for motor speed
selection location.
NOTE: In low static applications, lower motor speed tap should be used
to reduce possibility of water being blown off coil.
Refrigerant Tubing Connection and
Evacuation
Use accessory tubing package or field-supplied tubing of refrigerant
grade. Suction tube must be insulated. Do not use damaged, dirty, or
contaminated tubing because it may plug refrigerant flow-control
device. ALWAYS evacuate the coil and field-supplied tubing to 500
microns before opening outdoor unit service valves.
Units have sweat suction and liquid tube connections. Make suction tube
connection first.
1. Cut tubing to correct length.
2. Insert tube into sweat connection on unit until it bottoms.
3. Braze connection using silver bearing or non-silver bearing brazing
materials. Do not use solder (materials which melt below 800° F /
427° C). Consult local code requirements.
4. Evacuate coil and tubing system to 500 microns using a deep
vacuum method.
Refrigerant Flow-Control Device
The 018-060 size units come equipped with a R-410A refrigerant
mechanical TXV. When tightening nuts on a TXV, do not exceed
20 ft-lbs.
Always use outdoor units designed to match indoor fan coil applications.
Disassembly
NOTE: For Item #1 (Fig. 16): Use an adjustable wrench with a backup
adjustable wrench to loosen the brass nut (TXV outlet). Then use both
wrenches to loosen Item # 2 (TXV inlet).
1. Use an adjustable wrench with a backup adjustable wrench to
loosen Item # 3 (TXV equalizer line).
2. For Item #4 - Cut the wire tie and remove the black insulation.
Remove the band from around the TXV bulb.
3. Cut the wire tie that holds the TXV equalizer line and bulb from the
aluminum vapor header tube.
4. Remove 2 screws from the TXV bracket. Remove the TXV from
the coil unit.
Table 1 – Fan Speed Selection
Tap 1
Low 90 sec off delay
Tap 2
Medium 90 sec off delay
Tap 3
High 90 sec off delay
Tap 4
Electric heat † 0 sec off delay
Tap 5
Max ‡ 0 sec off delay
1 2 3 4 5
Speed Taps may be located on motor,
or on plug close to motor.
CLGN
1 2 3 4 5
CAUTION
!
PRODUCT DAMAGE HAZARD
Failure to follow this caution may result in product or property damage.
A brazing shield MUST be used when tubing sets are being brazed to
the unit connections to prevent damage to the unit surface and
condensate pan fitting caps.
CAUTION
!
PRODUCT DAMAGE HAZARD
Failure to follow this caution may result in product or property damage.
Wrap a wet cloth around rear of fitting to prevent damage to TXV and
factory-made joints.
CAUTION
!
PRODUCT OPERATION HAZARD
Failure to follow this caution may result in improper product operation.
If using a TXV in conjunction with a single-phase reciprocating
compressor, a compressor start capacitor and relay are required.
Consult outdoor unit pre-sale literature for start assist kit part number.
WARNING
!
PERSONAL INJURY HAZARD
Failure to follow this warning could result in personal injury.
Remove refrigerant charge from system and ensure there is no pressure
before servicing the TXV.