York RFCB18BXEMP2S1 User manual

Air handler configuration
These air handler units are supplied ready to install in an upflow or
horizontal left position. See Figure 3. If the unit requires either downflow or
horizontal right airflow configurations, the unit must have the coil assembly
repositioned. See Downflow or horizontal right conversion .
Downflow or horizontal right conversion
1. Remove the coil access panel.
2. Slide the coil and drain pan assembly out of the air handler.
3. Turn the air handler cabinet upside down (downflow position).
4. If installing the unit in a horizontal right position, the following models
require installation of a horizontal baffle plate shipped with the unit:
C48G and C60H. The horizontal baffle plate must be secured to the
coil delta plates. See Installing a horizontal baffle plate.
5. Slide the coil back into the cabinet.
6. Install the coil access panel. Conversion is now complete.
Installing a horizontal baffle plate
1. With the coil removed from the air handling unit and laying on its hor-
izontal drain pan, locate the pre-drilled holes in the front and rear coil
delta plates.
2. Insert the horizontal baffle plate into the end of the coil. Insert one end of
the horizontal baffle plate into the top side of the primary drain pan as
shown in Figure 5 in the Installation Manual .
3. Secure the horizontal baffle plate in place with two screws, one in the
front delta plate and one in the rear delta plate.
Horizontal left applications (all models)
Air handling units are supplied ready to install in a horizontal left position.
A horizontal drain pan is factory installed. Refer to the Installation Manual
for further installation instructions.
Positioning the unit in horizontal applications
Set the unit so that it is sloped 1/4 in. towards the drain line connection.
Horizontal suspension
These air handlers may be suspended in horizontal applications. Use
angle steel support brackets with minimum 3/8 in. threaded rods,
supporting the unit from the bottom. Attach the threaded rods at the
locations shown in Figure 4, leaving enough clearance between the door
and the rod so that doors can be removed for service.
Figure 3: Typical installation
NOTICE
Convert the air handler to the desired orientation prior to installation.
Conversion must be made before brazing the refrigerant connections
to the coil.
NOTICE
These models are shipped with a horizontal baffle plate. Remove and
retain this plate for horizontal right application. Discard for all other
applications.
A1701-001
Upflow Downflow Horizontal right
Horizontal left
Heat kit
Heat kit
Heat kit
Heat kit
CAUTION
Do not lift the air handler by the cabinet brace. The cabinet brace is
held in place by the coil channel. The cabinet brace could become
disengaged from the cabinet causing the air handler to fall, potentially
causing injury or damaging property. Refer to Figure 1 in the Installa-
tion Manual for the location of the cabinet braces.
NOTICE
When assembling the support structure, size to provide clearance for
access door removal.
Figure 4: Suspension support locations
Table 4: Horizontal suspension dimensions
Air handler cabinet size X (in.) H (in.)
B18B 21 3/4 47
B24C/B30D/B36D 21 3/4 49 5/8
C36D 21 3/4 51
C42F 21 3/4 57
C48G/D48G/D60J 21 3/4 61 1/4
C60H/D60H 21 3/4 63
!
A1695-001
2 in. 1 1/2 in.
H
1 1/2 in. 1 1/2 in.
H
X
X
Minimum 1 1/2 in. x 1 1/2 in.
(Angle recommended length 26
in. minimum with 2 in. clearance
on both sides of the air handler)
Minimum 3/8 in.
threaded rod
Minimum 1 1/2 in. x 1 1/2 in.
(Angle recommended length 26
in. minimum with 2 in. clearance
on both sides of the air handler)
Minimum 3/8 in.
threaded rod
This document does not replace the Installation Manual,which must be referred to for detailed information.
Notes:
1. The controls may require correct polarity on the power supply and a adequate ground.
2. These units are rated for use with single and three phase 208 V or 230 V supply power.
3. Use flexible duct connectors.
4. Supply air ductwork must remain the size of the supply opening for the first 12 in. before transition to the correct duct size.
5. The return and supply duct may be fastened to the bottom or sides of the air handler using screws no longer than 1/2 in..
6. Line voltage electrical knockouts are available on the left top and left casing side. Refer to the Installation Manual for information on correct sizing
of overcurrent protection and supply wire sizes.
7. Low voltage electrical knockouts are available on the right top and right casing side.
8. Seal electrical openings and duct connections to prevent air infiltration.
9. If installing the air handler above a finished ceiling, use a secondary drain pan.
10. It is necessary to trap condensate drain pans and slope them toward the drain.
A1694-001
Blower compartment
Coil compartment
C
15 in.
1 1/2 in.
Filter access B20 1/2 in.
21 7/16 in.
Drain connections for upflow applications
Refrigerant connections
G
F
A
Service
disconnect panel
Top outlet
dimensions
E
12 3/16 in.
18 5/8 in.
D
Bottom inlet
dimensions
Figure 1: Dimensions
Table 1: Dimensions1
Models Dimensions Wiring knockouts2Refrigerant
connections line size
A B C D E F G
Height (in.) Width (in.) Opening widths (in.) Power (in.) Control (in.) Liquid (in.) Vapor (in.)
RFCB18BXEMP2S1 47 17 1/2 7 1/2 16 1/2 16 1/2
7/8 (1/2)
1 3/8 (1)
1 23/32 (1 1/4) 7/8 (1/2) 3/8
3/4
RFCB24CXEMP2N1 49 5/8 17 1/2 10 16 1/2 16 1/2
RFCB30DXEMP2N1 49 5/8 17 1/2 10 16 1/2 16 1/2
RFCB36DXEMP2N1 49 5/8 17 1/2 10 16 1/2 16 1/2
RFCC36DXEMP2N1 51 21 11 1/2 20 20
RFCC42FXEMP2N1 57 21 17 1/2 20 20
7/8
RFCC48GXEMP2N1 61 1/4 21 21 3/4 20 20
RFCD48GXEMP2N1 61 1/4 24 1/2 21 3/4 23 1/2 23 1/2
RFCC60HXEMP2N1 63 21 23 1/2 20 20
RFCD60HXEMP2N1 63 24 1/2 23 1/2 23 1/2 23 1/2
RFCD60JXEMP2N1 61 1/4 24 1/2 21 3/4 23 1/2 23 1/2
1.All dimensions are in inches.
2.Actual size (conduit size)
Subject to change without notice. Published in U.S.A. 6112629-URG-A-1021
Copyright © 2021 by Johnson Controls, Inc. All rights reserved. Supersedes: None
York International Corp.
5005 York Drive
Norman, OK 73069
Quick Reference Guide
Single-piece ECM multi-position
residential air handlers

Table 2: Airflow data (CFM)
Models Blower
motor speed External static pressure (in. W.C.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
B18B
High (5) 975 925 875 825 800 750 700 650 600 550
Medium high (4) 900 850 800 775 725 675 625 575 525 500
Medium (3) 825 775 725 700 650 600 550 500 450 400
Medium low (2) 650 600 550 500 425 -----
Low (1) 450 - - - - -----
B24C
High (5) 1150 1125 1100 1050 1025 975 950 900 875 850
Medium high (4) 1000 950 925 875 825 775 750 700 650 600
Medium (3) 775 725 675 625 575 525 450 400 - -
Medium low (2) 675 600 550 500 425 -----
Low (1) 525 450 - - - -----
B30D
High (5) 1150 1125 1075 1050 1025 975 950 925 875 850
Medium high (4) 1000 950 900 875 825 800 750 700 675 625
Medium (3) 775 725 700 650 600 550 500 450 400 -
Medium low (2) 650 600 550 500 450 400 - - - -
Low (1) 575 525 475 400 - -----
B36D
High (5) 1500 1475 1450 1425 1425 1400 1375 1350 1325 -
Medium high (4) 1325 1300 1275 1250 1225 1200 1175 1150 1125 1100
Medium (3) 975 950 900 875 825 800 750 700 675 625
Medium low (2) 925 875 825 800 750 700 675 625 575 550
Low (1) 650 600 550 500 450 400 - - - -
C36D
High (5) 1600 1575 1525 1500 1450 1425 1400 1350 1325 1275
Medium high (4) 1400 1375 1325 1275 1225 1200 1150 1100 1075 1025
Medium (3) 1100 1050 1000 950 900 850 800 725 675 625
Medium low (2) 950 900 825 775 725 650 600 550 475 425
Low (1) 725 650 575 525 450 375 - - - -
C42F
High (5) 1525 1500 1450 1425 1375 1350 1300 1275 1225 1200
Medium high (4) 1375 1325 1300 1250 1200 1150 1125 1075 1025 975
Medium (3) 1050 1000 950 900 850 775 725 675 625 575
Medium low (2) 925 875 800 750 700 625 575 525 450 400
Low (1) 700 625 575 500 425 -----
C48G
High (5) 1925 1900 1875 1850 1800 1775 1750 1725 1700 1675
Medium high (4) 1750 1700 1675 1650 1600 1575 1550 1500 1475 1450
Medium (3) 1400 1350 1300 1275 1225 1175 1125 1075 1050 1000
Medium low (2) 1200 1150 1100 1050 1000 925 875 825 775 725
Low (1) 925 875 800 750 700 625 575 500 450 375
D48G
High (5) 2050 2000 1975 1950 1900 1875 1850 1800 1775 1750
Medium high (4) 1850 1800 1775 1725 1700 1650 1625 1575 1550 1500
Medium (3) 1625 1600 1550 1500 1450 1425 1375 1325 1275 1250
Medium low (2) 1275 1200 1150 1100 1050 975 925 875 825 750
Low (1) 1000 925 875 800 750 675 600 550 475 400
C60H
High (5) 1925 1900 1875 1850 1825 1775 1750 1725 1700 1675
Medium high (4) 1750 1725 1675 1650 1625 1575 1550 1525 1475 1450
Medium (3) 1375 1350 1300 1250 1225 1175 1125 1100 1050 1000
Medium low (2) 1200 1150 1100 1050 1000 950 900 850 800 750
Low (1) 950 900 825 775 725 650 600 550 475 425
D60H
High (5) 1925 1900 1875 1825 1800 1775 1750 1700 1675 1650
Medium high (4) 1775 1750 1725 1675 1650 1600 1575 1525 1500 1450
Medium (3) 1450 1400 1325 1275 1225 1175 1125 1075 1025 975
Medium low (2) 1225 1175 1125 1050 1000 950 875 825 775 700
Low (1) 975 900 850 775 700 625 550 475 425 -
Continued on next page
Table 2: Airflow data (CFM) (continued)
Notes:
1. No electric heat installed
2. Air handler units are tested to UL60335-2-40 standards up to 0.6 in. W.C. external static pressure.
3. Dry coil conditions only; tested without filters
4. For optimal performance, external static pressures of 0.2 in. W.C. to 0.5 in. W.C. are recommended. Heating applications are tested at 0.5 in. W.C. external static pressure.
5. Airflow data shown is from testing performed at 230 V. These units use a standard ECM constant torque motor and there is minimal variation of airflow at other distribution
voltage values. The above data can be used for airflow at other distribution voltages.
Clearances
It is essential to provide the following clearances:
1. Refrigerant piping and connections - minimum 12 in.
2. Maintenance and servicing access - minimum 36 in. from the front of
the unit for blower motor or coil replacement
3. Condensate drain lines routed to clear filter and panel access
4. Filter removal - minimum 36 in.
5. The supply air ductwork connected to this unit is designed for 1 in.
clearance for the first 18 in. of combustible materials if an electric heat
kit accessory is installed.
6. A combustible floor base accessory is available for downflow applica-
tions of this unit, if required by local code.
External duct static
Measure the supply air static pressure. Record this positive number.
Measure the return air static pressure. Record this negative number.
Treat the negative number as a positive and add the two numbers
together to determine the total external system static pressure. If a filter
rack is installed on the return air end of the air handler or indoor coil
section, make sure to measure the return air duct static between the filter
and the indoor coil.
Figure 2: Duct static measurements
Models Blower
motor speed External static pressure (in. W.C.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
D60J
High (5) 2100 2075 2050 2025 2000 1975 1925 1900 1875 1850
Medium high (4) 1925 1900 1875 1825 1800 1775 1725 1700 1675 1650
Medium (3) 1750 1725 1675 1650 1600 1575 1525 1500 1450 1425
Medium low (2) 1350 1275 1225 1175 1125 1075 1025 975 925 875
Low (1) 1200 1150 1100 1025 975 925 850 800 750 675
Take measurements here if using
a filter rack.
Return air static must be taken
between the filter and indoor coil.
A1704-001
Table 3: Electrical heat - minimum fan speed
Heater kit
models1,2
Nominal
kW
at 240 V
Air handler models
B18B B24C B30D B36D C36D C42F C48G D48G C60H D60H D60J
8HK(0,1)6500206 2.4 Medium
Low (2) Medium (3) Medium High (4) Medium (3) Medium (3) Medium (3) Medium Low (2) Medium Low (2) Medium Low (2) Medium Low (2) Medium Low (2)
8HK(0,1)6500506 4.8 Medium
(3) Medium (3) Medium High (4) Medium (3) Medium (3) Medium (3) Medium Low (2) Medium Low (2) Medium Low (2) Medium Low (2) Medium Low (2)
8HK(0,1)6500806 7.7 Medium
High (4) Medium High (4) Medium High (4) Medium High (4) Medium High (4) Medium High (4) Medium (3) Medium (3) Medium (3) Medium (3) Medium Low (2)
8HK(0,1)6501006
8HK06501025 9.6 Medium High (4) Medium High (4) Medium High (4) Medium High (4) Medium High (4) Medium High (4) Medium (3) Medium (3) Medium High (4) Medium (3) Medium Low (2)
8HK(1,2)6501506
8HK06501525 14.4 - Medium High (4) High (5) Medium High (4) Medium High (4) Medium High (4) Medium (3) Medium (3) Medium High (4) Medium High (4) Medium (3)
8HK(1,2)6502006
8HK16502025 19.2 - - High (5) Medium High (4) High (5) High (5) Medium High (4) Medium (3) Medium High (4) Medium High (4) Medium (3)
8HK(1,2)6502506
8HK16502525 24---------Medium High (4) Medium (3)
1.(0,1) - 0 = no service disconnect or 1 = with service disconnect
2.(1,2) - 1 = with service disconnect, no breaker jumper bar or 2 = with service disconnect and breaker jumper bar