10 Specifications subject to change without notice. IM-KSAIC03-02
Basic Setup for the FV4C “EASY SELECT” Printed-Circuit Board
BASIC FAN COIL CONFIGURATION
The following basic configuration of the fan coil will provide AHRI rated performance of the heat pump:
A. AUX HEAT KW/CFM −
Select the heater range for the size electric heater installed.
B. AC/HP SIZE −
Select system size installed.
For size 12K select 018 on the board
For sizes 18 - 36 select the nominal connector on the board.
C. SYSTEM TYPE -
Select system type
D. AC/HP CFM ADJUST −
Select NOM.
E. ON/OFF DELAY −
Select 0/90 profile.
F. CONTINUOUS FAN −
Select desired fan speed when thermostat is set to
continuous fan.
For size 12K select 'MED"
TXV Replacement Process for Piping Adapter
For FV4CNF002L00 and FV4CN(B,F)003L (Refer to Fig. 15)
1. Gain access to the Built-in TXV inside the Fan Coil Cabinet.
2. Double-wrench the TXV mechanical connector and disassemble.
3. Cut the bleed line from the TXV to the suction line and braze closed the capillary tube.
4. Remove the tail bulb from the suction line by cutting the stainless steel band.
5. Assemble the line set to the Piping adapter kit (331831-701 obtain through RCD).
a. Use 3/8" copper sweat long radius street elbow and 3/8" copper sweat coupling (field supplied).
b. Field fabricate 3/8" copper tubing by cutting 3 3/4" length.
c. Temporarily remove the Teflon gasket from the tip of the piping adapter.
d. Make sure that the brass nut is properly positioned on the adapter before brazing.
e. Flow Nitrogen for brazing.
f. Braze the street elbow, tubing and coupling (See Figure 16) to complete the piping adapter.
g. Refer to Appendix 2 for Bushing/Reducer sizing.
h. Adapt (where needed) and braze the liquid line to the piping adapter.
i. Alternate for steps "A", "B", and "F: Use a tubing bender to bend the end of the 3/8" liquid line, cut the tip so that the bend length is 1
3/4" from the outer edge of the tubing (See Figure 17).
6. Place Teflon gasket on the brass tip of the Piping Adapter and insert into the aluminum distributor head.
7. Thread piping adapter brass nut onto the distributor line and tighten - finger tight + 1/2 turn.
Fig. 18 —Detail of FV4C Printed-Circuit Board
Fig. 15 —Piping Adapter Replacement
Fig. 16 —Braze Street Elbow,
Tubing, and Coupling
Fig. 17 —Bend Liquid Line
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