035-14520-001 Rev. B (0803)
6
Unitary Products Group
AIR FILTERS
Air filters must be field supplied. A 1" filter access rack has
been built into the unit. See Figure 4. Remove filter access
cover shown. Install proper size filter. Standard 1" size per-
manent or throw away filter may be used, or, permanent
washable filters are available using model numbers:
1PF0601, 602, 603BK. See Table 2 for filter size.
SUSPENSION KITS
A suspension kit is available. Models 1BH0601 (unit sizes
018-060) is designed specifically for the units contained in
this instruction (upflow application only). For installation of
these accessory kits, see the instructions packed with the kit.
For suspension of these units in horizontal applications, it is
recommended to use angle steel support brackets with
threaded rods, supporting the units from the bottom, at the
locations shown in Figure 6.
COIL METERING DEVICES
The coil in this Air Handler unit will have a metering device
installed at the factory.
If the model number is of the following format:
F3RPxxxH06T or F3FPxxxH06T - The coil will have a Ther-
mal Expansion Valve (TXV) installed. Please refer to the TXV
Metering Device section for installation notes.
If the model number is of the following model series:
F2RP / F2FP or F2RC / F2FC - The coil will have an orifice
installed in the distributor housing. Please refer to the Orifice
Metering Device section for selection & installation notes.
TXV Metering Device
Please refer to Table 1 to verify which TXV is installed in this
Air Handler unit and that this AHU is a valid system match for
the AC or HP unit installed.
The TXV is fully brazed into the coil assembly of this Air Han-
dler unit at the factory. The temperature sensing bulb will
need to be attached to the coil suction header line after the
line set is brazed to the coil.
• Make sure the TXV bulb is outside of the Air Handler
cabinet. Excess tubing should remain inside the cabi-
net.
• Take caution not to apply high temperatures to the TXV
assembly or equalizer line while brazing.
• Attach field line sets and braze to coil connections.
Replace access panels & secure.
• Secure the TXV bulb to the suction line with the clamp
provided. Choose a horizontal location as close to the
cabinet as possible, but not directly on the brazed con-
nection joint. Refer to Figure 7.
• The bulb should be in direct contact with the coil suc-
tion line along the length of the bulb.
Equipment should never be operated without filters.
Units
(Nominal Tons)
Dimension
WW
XX
018, 024, 030, 036,
040, 042
14”
40-3/4”
045, 048, 060
19-1/2”
50-3/4”
FIGURE 6 :
Typical Horizontal Installation
SUSPENSION SUPPORT LOCATIONS FOR HORIZONTAL APPLICATIONS*
2
WW
XX
1-1/2
NOTE:
USE SUPPORTS UNDER UNIT.
Table 1:
INSTALLED ORIFICE OR TXV SIZES
Indoor Coil Model
Metering Device
F2RP018 / F2FP018
Orifice - 53
F2RP024 / F2FP024
Orifice - 61
F3RP024(T) / F3RP030(T)
TXV 701
F2RP030 / F2FP030
Orifice - 65
F2RP036 / F2FP036
Orifice - 75
F3RP036(T) / F3RP042(T)
TXV 702
F2FP040
Orifice - 63
F3FP040(T) / F3FP045(T)
TXV 702
F2RP042 / F2FP042
Orifice - 78
F2FP045
Orifice - 78
F2FP048
Orifice - 84
F3FP048(T) / F3FP060(T)
TXV 703
F2FP060
Orifice - 90
F2RC024 / F2FC024
Orifice - 61
F2RC030 / F2FC030
Orifice - 65
F2RC036 / F2FC036
Orifice - 73
FIGURE 7 :
TXV Bulb Installation
INSULATION
ROLL
EXPANSION
BULB
EXPANSION
BULB
CLAMP
EXPANSION
LINE
