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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.
2
Installation
Check Equipment
Unpack unit and move to final location. Remove carton taking care not
to damage unit.
NOTE: Shipping block(s) that support the blower housing during transit
will need to be removed (
Fig. 1).
NOTE: If the door gasket is damaged or missing, the unit may not meet
the ASHRAE 193 standard for cabinet air leakage. See the Product Data
for this model or contact your supplier to order the gasket kit.
Inspect equipment for damage prior to installation. File claim with
shipping company if shipment is damaged or incomplete. Locate unit
rating plate which contains proper installation information. Check rating
plate to be sure unit matches job specifications.
NOTE:
A221016A
Fig. 1 – Remove Shipping Blocks
Mount Unit
Unit can stand or lie on floor, or hang from ceiling or wall. Allow space
for wiring, piping, and servicing unit.
IMPORTANT: When unit is installed over a finished ceiling and/or
living area, building codes may require a field-supplied secondary
condensate pan to be installed under the entire unit. Some localities may
allow as an alternative, the running of a separate, secondary condensate
line. Consult local codes for additional restrictions or precautions.
Nuisance sweating may occur if the unit is installed in a high humidity
environment with low airflow.
Upflow Installation
If return air is to be ducted through a floor, set unit on floor over opening
and use 1/8" to ¼" (3 to 6 mm) thick fireproof resilient gasket between
duct, unit, and floor.
Side return is a field option on slope coil models. Cut opening per
dimensions (
Fig. 2). A field-supplied bottom closure is required.
Downflow Installation
In this application, field conversion of the evaporator is required using
accessory downflow kit along with an accessory base kit. Use fireproof
resilient gasket, 1/8" to ¼" (3 to 6 mm) thick, between duct, unit, and
floor.
NOTE: To convert units for downflow applications, refer to Installation
Instructions supplied with kit for proper installation. See the Product
Data or contact your supplier for the kit number. Use fireproof resilient
gasket, 1/8" to ¼" (3 to 6 mm) thick, between duct, unit, and floor.
NOTE: A gasket kit is also required for all downflow applications to
maintain low air leak/low sweat performance. See the Product Data or
contact your supplier for the kit number.
Horizontal Installation
Units must not be installed with access panels facing up or down. All
other units are factory built for horizontal left installation (
Fig. 3 and
Fig. 4). When suspending unit from ceiling, dimples in casing indicate
suitable location of screws for mounting metal support straps (Fig. 3).
For horizontal applications having high return static and humid return
air, the Water Management Kit may need to be used to assist in water
management. See the Product Data or contact your supplier for the kit
number.
NOTE: Modular units can be disassembled and components moved
separately to installation area for reassembly. This process
accommodates small scuttle holes and limiting entrances to installation
sites (
Fig. 7).
CAUTION
!
PRODUCT OR PROPERTY DAMAGE HAZARD
Failure to follow this warning caution may result in product or property
damage.
The conversion of the fan coil to downflow requires special procedures
for the condensate drains on both A-coil and Slope-coil units. The
vertical drains have an overflow hole between the primary and
secondary drain holes. This hole is plugged for all applications except
downflow, and must be used for downflow. During conversion process,
remove plastic cap covering vertical drains only and discard. Remove
plug from overflow hole and discard. At completion of downflow
installation, caulk around vertical pan fitting to door joint to retain low
air leak performance of the unit.
CAUTION
!
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in product or property damage.
For optimum condensate drainage performance in horizontal
installations, unit should be leveled along its length and width.