Page 1
INSTALLATION INSTRUCTIONS
WARNING
ISO 9001:2008
FOR RCQD COILS
SUPERSEDES 92-100105-05-02
92-100105-05-03
Page 2
TABLE OF CONTENTS
Model Number Explanation .. . . . . . . . . . . . . . . . . . . . . . 2
Unit Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Airflow Pressure Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Coil Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . 5
Codes/Regulations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Coil Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Vertical Upflow and Horizontal Left Installation . . . . . . . . 6
Vertical Downflow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Horizontal Left Installation . . . . . . . . . . . . . . . . . . . . . . . . 7
Horizontal Right Installation . . . . . . . . . . . . . . . . . . . . . . . 7
FIGURE 1
MODEL NUMBER EXPLANATION
RCQD—24 17 AS
Refrigerant Connections. . . . . . . . . . . . . . . . . . . . . . . . . . 7
TXV Sensing Bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Condensate Drain Tubing . . . . . . . . . . . . . . . . . . . . . . . . 7
Horizontal Drain Pan Extension . . . . . . . . . . . . . . . . . . . . 9
MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Indoor Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Plenum Adapter Accessory . . . . . . . . . . . . . . . . . . . . . . 10
Sweat
Variation
A - 16 & 18 SEER Application
Coil Casing
17 = 17" [431.8 mm]
21 = 21" [533.4 mm]
24 = 24" [609.6 mm]
Nominal Capacity
24 = 24,000 BTUH
[7.03 kW]
36 = 36,000 BTUH
[10.55 kW]
48 = 48,000 BTUH
[14.06 kW]
60 = 60,000 BTUH
[17.58 kW]
Design Series
Type of Coil
Q=High Efficiency AC/Heat Pump Coil
with Expansion Valve
Coil
TRADE NAME
2
Page 3
FIGURE 2
197/8
UNIT SPECIFICATIONS
AIRFLOW
FRONT VIEW
3/4 NPT DRAIN
(SECONDARY)
3/4 NPT DRAIN
(PRIMARY)
A
PLENUM WIDTH
“A” Minus One Inch
B
3-3/8
1-51/64
LIQUID LINE
C
SIDE VIEW
SUCTION LINE
7-5/8
5-5/8
22
DIMENSIONS AND WEIGHTS DATA
Coil
Model
Number
RCQD-2417AS 3/8 [9.53] 3/4 [19.05] 17-1/2 [445] 19-7/8 [505] 28 [711] 59 [27] 67 [30]
RCQD-3621AS 3/8 [9.53] 7/8 [22.23] 21 [533] 24-3/4 [629] 28 [711] 74 [34] 83 [38]
RCQD-3624AS 3/8 [9.53] 7/8 [22.23] 24-1/2 [622] 24-3/4 [629] 28 [711] 80 [36] 90 [41]
RCQD-4821AS 3/8 [9.53] 7/8 [22.23] 21 [533] 24-3/4 [629] 28 [711] 74 [34] 83 [38]
RCQD-4824AS 3/8 [9.53] 7/8 [22.23] 24-1/2 [622] 24-3/4 [629] 28 [711] 80 [36] 90 [41]
RCQD-6024AS 3/8 [9.53] 7/8 [22.23] 24-1/2 [622] 24-3/4 [629] 28 [711] 80 [36] 90 [41]
Connections
Sweat (in.) [mm]
Liquid Suction
I.D. I.D.
ABC
Dimensions (in.) [mm] – Weight (lbs.) [Kg]
Coil Weight
(lbs.) [Kg]
Shipping Weight
(lbs.) [Kg]
3
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TABLE 1
COIL SPECIFICATIONS / AIRFLOW PRESSURE DROP
Approx.
Model
Number
RCQD-
Type
Flow
Air
Design
Air Flow
CFM [L/s]
➀
Range
HIGH EFFICIENCY COOLING COILS
2417AS U-H
3621AS U-H
3624AS U-H
4821AS U-H
4824AS U-H
6024AS U-H
450/800 4.38
[212/378] [0.41] [.015] [.024] [.035] [.042] [.052] [.062] [.072]
720/1200 5.83
[340/566] [0.54] [.02] [.025] [.032] [.04] [.045] [.052]
720/1200 5.83
[340/566] [0.54] [.017] [.022] [0.27] [0.32] [0.37] [0.42]
960/1600 5.83
[453/755] [0.54] [.035] [.042] [.047] [.055] [.062] [.072] [.08]
960/1600 5.83
[453/755] [0.54] [.027] [.032] [.037] [.042] [.047] [.057] [.062]
1050/1700 5.83
[496/802] [0.54] [.027] [.032] [.037] [.042] [.047] [.055] [.060] [.067]
➀H = Horizontal airflow, U = Upflow
Face
Area
Sq. Ft.
[m
Fins-in.
Rows
Deep
2
]
600
[283]
0.06 0.10 0.14 0.17 0.21 0.25 0.29
14/3
14/3
14/3
14/3
14/3
14/3
Static Pressure Drop Through Wet Cooling Coil [kPa] (Inches H
700
800
900
1000
1100
1200
[330]
[378]
[425]
[472]
[519]
[566]
1300
[614]
0.08 0.10 0.13 0.16 0.18 0.21
0.07 0.09 0.11 0.13 0.15 0.17
0.14 0.17 0.19 0.22 0.25 0.29 .032
.11 .13 .15 .17 .19 .23 .25
.11 .13 .15 .17 .19 .22 .24 .27
1400
[661]
1500
[708]
2
O) CFM [L/s]
1600
[755]
1700
[802]
1800
[850]
1900
[897]
4
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TABLE 2
COIL APPLICATION
Coil Model
RCQD
2417AS
3621AS
4821AS
3624AS, 4824AS,
6024AS
NOTES:
* U = UPFLOW
H = HORIZONTAL
WARNING
!
Type Air
Flow*
U-H
U-H
U-H
U-H
U-H
U-H
U-H
U-H
U-H
U-H
PROPOSITION 65: THIS APPLIANCE CONTAINS
FIBERGLASS INSULATION. RESPIRABLE PARTICLES OF FIBERGLASSARE KNOWN TO THE STATE
OF CALIFORNIA TO CAUSE CANCER.
All Rheem products meet current Federal OSHA
Guidelines for safety. California Proposition 65 warnings
are required for certain products, which are not covered
by the OSHA standards.
California'sProposition65 requires warnings for products
sold in Californiathat contain or produce any of over 600
listed chemicals known to the State of California to cause
cancer or birth defects such as fiberglassinsulation,lead
in brass, and combustion products from natural gas.
All “new equipment” shipped for sale in California will
have labels stating that the product contains and/or produces Proposition 65 chemicals. Although we have not
changed our processes, having the same label on all our
products facilitates manufacturingand shipping. We cannot always know “when, or if” products will be sold in the
California market.
You may receive inquiries from customers about chemicals found in, or produced by, some of our heating and
air-conditioning equipment, or found in natural gas used
with some of our products. Listed below are those chemicals and substances commonly associatedwith similar
equipment in our industry and other manufacturers.
• Glass Wool (Fiberglass) Insulation
• Carbon Monoxide(CO).
• Formaldehyde
• Benzene
More details are availableat the websitesfor OSHA
(OccupationalSafety and Health Administration), at
www.osha.gov
and the State of California’s OEHHA
(Office of Environmental Health Hazard Assessment), at
www.oehha.org
. Consumer education is important since
the chemicals and substanceson the list are found in our
daily lives. Most consumersare aware that products present safety and health risks, when improperly used, handled and maintained.
Furnace Width
inches [mm]
Oil Gas
21 [533]
21 [533]
24-1/2 [622]
I. INSPECTION
Immediatelyupon receipt, all cartons,and contents should
be inspected for transit damage. Units with damaged cartons should be opened immediately. If damage is found, it
should be noted on the deliverypapers and a damage
claim filed with the last carrier.
• Afterunit has been delivered to job site, remove carton
taking care not to damage unit.
• Checkthe unit rating plate to be sure equipment matches what is required for the job specification.
• Read the entire instructions before starting the installation. This is particularlyimportant if this is the first installation for this specific model series.
• Many installationsteps done prior to setting the unit in
place can save time and simplify the installation.
II. GENERAL INFORMATION
CODES/REGULATIONS
Units should be installed in accordance with any local
code which may apply and the national codes. Latest editions are available from: “National Fire Protection
Association,Inc., Batterymarch Park, Quincy, MA 02269.”
These publications are:
• ANSI/NFPA Latest Edition (NEC) National Electrical
Code.
• NFPA90A Installation of Air conditioning and
Ventilating Systems.
• NFPA90B Installation of Warm Air Heating and Air
Conditioning Systems.
REPLACEMENT PARTS
Any replacement part must be the same as or an
approved alternate to the original part supplied. The manufacturer will not be responsible for replacement parts not
designed to physically fit or operate within the design
parameters the original parts were selected for.
When ordering replacement parts, it is necessary to order
by part number and include the complete model number
and serial number from the unit rating plate. (See parts list
for unit component part numbers.)
Plenum Adapter
Upflow
17-1/2 [445] N/A
14 [356]
21 [533]
17-1/2 [445]
21 [533]
17-1/2 [445]
24-1/2 [622]
21 [533]
RXBA-AC
N/A
N/A
RXBA-AC
N/A
RXBA-AC
N/A
N/A
RXBA-AC
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III. INSTALLATION
COIL INSTALLATION
CAUTION
!
WHEN INSTALLING A UNIT WITH COOLING COIL OVER
A FINISHED CEILING AND/OR LIVING SPACE, INSTALLATION OF A SECONDARY FIELD FABRICATED DRAIN
PAN UNDER THE ENTIRE UNIT, TO AVOID DAMAGE TO
CEILING, IS RECOMMENDED.
RCQD- coils can be applied in various upflow and horizontal flow configurations. (See Figure 3. Refer to Table 2 for
approved applications).
CAUTION
!
FOR HORIZONTAL APPLICATIONS, THE HORIZONTAL
DRAIN PAN MUST BE LOCATED UNDER THE INDOOR
COIL. FAILURE TO PLACE THE PAN UNDER THE COIL
CAN RESULT IN PROPERTY DAMAGE.
FIGURE 3
FACTORY SHIPPED COIL INSTALLATION
VERTICAL UPFLOW AND
HORIZONTAL LEFT INSTALLATION
(SEE FIGURE 3)
1. For vertical or horizontal left installation, no modifica-
tion from current factory configurationis required.
2. Seal the gap around the refrigerant lines with the per-
magum provided in the parts bag.
NOTE: The coil is shipped from factory for the vertical or
horizontal left position. The coil must be convertedfor use
in horizontal right position.
VERTICAL DOWNFLOW
IMPORTANT: The RCQD-series coil is not approved for
vertical downflow applications.
CAUTION
!
SEVERE CONDENSATE BLOWOFF CAN OCCUR IF THE
RCQD COIL IS APPLIED IN A VERTICAL DOWNFLOW
APPLICATION.
HORIZONTAL LEFT
UPFLOW
FIGURE 4
HORIZONTAL RIGHT INSTALLATION
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HORIZONTAL LEFT INSTALLATION
All RCQD-series coils are shipped for vertical and horizontal left applications. Conversion is required for horizontal
right applications.
HORIZONTAL RIGHT INSTALLATION
(SEE FIGURE 4)
THE FOLLOWING COIL MODIFICATIONS MUST BE IMPLEMENTED:
1. Remove the entire front panel assembly by removing all
necessary screws.
2. Remove the refrigerant access panel from the front
panel and reinstall it with the right-handside mounting
holes (see Figure 5).
3. Switch the positions of the left condensate plate and
right blank plate on the front panel.
4. Slide the coil outside of the coil box.
5. Remove the vertical bracket on the right side of the vertical drain pan (see Figure 6).
6. Removethehorizontal drainpanandplace it on the right
sideofthecoil(see Figure7).
7. Re-install the vertical bracket on the left side of the vertical drain pan.
8. Remove all screws from the top of the air stop (see
Figure 8).
9. Remove the center drain trough by removing the screw
located at the back triangular plate (see Figure 8).
Ensure glue stop on the bottom of the drain trough.
10. Rotate the center drain trough 180°, front to back (see
Figure 9).
NOTE: Failure to properly rotate the center drain trough
may permit condensate water to blow off the cooling
coil.
11. Apply permagum supplied in parts bag to underside of
drain trough (see Figure 10) in four corners.
12. Re-install the center drain trough and secure it by
tightening the screw through the hole located on the
front triangular plate. Reinstall the top air stop.
13. Replace the coil assembly into the coil box (be sure to
align the vertical bracketsproperly with the side rail),
taking care not to tear insulation.
14. Locate TXV sensing bulb and slide it through the universal grommet on the access panel.
15. Reinstall front panel.
16. Seal the gap around the refrigerant lines with the permagum provided in the parts bag.
REFRIGERANT CONNECTIONS
Keep the coil connections sealed until refrigerant connections are to be made. See the Installation Instructions for
the outdoor unit for details on line sizing, tubing installation,
and charging information.
Install refrigerant tubing so that it does not block service
access to the front of the unit.
Use a brazing shield to protect the cabinet’s paint from
being damaged by torch flames.
Coil is shippedwith a low (5 - 10 PSIG) pressure charge of
dry nitrogen. Evacuate the system before charging with R410A refrigerant.
FIGURE 5
REFRIGERANT ACCESS PANEL
NOTE: WHEN CONVERTING TO HORIZONTAL RIGHT INSTALLATION, USE THE RIGHTHAND SIDE MOUNTING
HOLES IN THE REFRIGERANT ACCESS
PANEL
TXV SENSING BULB
IMPORTANT:Do notperformanybrazingwiththeTXVbulb
attachedto theline.
Afterbrazingoperationshavebeencompleted,clamptheTXV
bulb securelyonthe suctionlineat the 2 o’clock position with
the strapprovidedinthepartsbag.
InsulatetheTXVsensingbulbandsuction linewith the provided pressure sensitiveinsulation (size4”x 7”) and secure with
providedwireties.
NOTE:TXVsensing bulbshould be located on a horizontal
section of suction line,justoutsideofcoilbox.
CONDENSATE DRAIN TUBING
Consultlocalcodesorordinancesforspecificrequirements.
IMPORTANT:Whenmakingdrainfittingconnectionstodrain
pan,useathinlayerofteflonpaste,siliconeorteflontapeand
installhandtight.
IMPORTANT:When making drainfitting connections to drain
pan,donotovertighten.Overtightening fittings can splitpipe
connections on drainpan.
• Donotreducedrainlinesizelessthanconnectionsizeprovidedon condensatedrainpan.
• Alldrainlinesmustbepitcheddownwardawayfromtheunita
minimumof1/8”perfootoflinetoensureproperdrainage.
• Do not connect condensate drain line to a closed or
open sewer pipe. Run condensate to an open drain or
outdoors.
• The drain line should be insulated wherenecessary to preventsweatinganddamageduetocondensate forming
on the outside surface of the line.
• Make provisions fordisconnectingandcleaningoftheprimary drain line should it become necessary. Install a 2
in.trapintheprimarydrain line as closetotheunitas
possible. Make sure that the top of the trap is below
connection to the drain pan to allow complete drainage
of pan (see Figure 5).
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Page 8
FIGURE 6
VERTICAL BRACKET
FIGURE 7
DRAIN PAN PLACEMENT
FIGURE 8
AIR STOP
SCREWS
SCREW
REMOVAL
DRAIN
TROUGH
SCREW
FIGURE 9
ROTATE DRAIN TROUGH
FIGURE 10
PERMAGUM APPLICATION
8
Page 9
FIGURE 11
CONDENSATE DRAIN TRAP
DO NOT OPERATE UNIT WITHOUT
CONDENSATE DRAIN TRAP.
FIGURE 12
HORIZONTAL DRAIN PAN EXTENSION KIT RXCH-A141
DUCT
COIL
AIRFLOW
UNIT
2''
DO NOT OVERTIGHTEN DRAIN FITTING
UNIT MUST BE SLOPED
TOWARD DRAIN CONNECTION.
• Auxiliary drain if used should be run to a place
where it will be noticeable if it becomes operational.
Occupant should be warned that a problem exists if
water should begin running from the auxiliary drain
line.
• Test condensate drain pan and drain line after installation is complete. Pour several quarts of water into
drain pan, enough to fill drain trap and line. Check to
make sure drain pan is draining completely, no leaks
are found in drain line fittings, and water is draining
from the termination of the primary drain line.
HORIZONTAL DRAIN PAN EXTENSION (SHIPPED
FROM FACTORY)
Attach the two parallel flanges on the drain pan extension over the vertical flange on the horizontal drain pan.
The drain pan extension will extend into the duct as
shown in Figure 12.
HORIZONTAL
DRAIN PAN
DETAIL A
HORIZONTAL
DRAIN PAN
HORIZONTAL DRAIN
PAN EXTENSION
SEE DETAIL A
HORIZONTAL
DRAIN PAN
EXTENSION
IV. MAINTENANCE
For continuing high performance and to minimize possible
equipment failure, it is essential that periodic maintenance
be performed on this equipment. Consult your local dealer
as to the proper frequency of maintenanceand the availability of a maintenance contract.
AIR FILTER
Check the system filter every ninety days or as often as
found to be necessary and if obstructed, clean or replace
at once.
Horizontal RCQC Applications Requiring Coil Pan
Extension and Extension Part Number
Coil Size Extension Coil Size Extension
2417AS NONE 2417AS NONE
3021BS
3121AS
3124AS
3617AS
3621AS 3621AS
3624BS 3624AS
4821AS 4821AS
4824AS 4824AS
4921AS
RCQB RCQD
4924AS
6024AS
6124AS
AS-57535-04
AS-57535-07
6024AS
AS-57535-04
AS-57535-07
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IMPORTANT: DO NOT OPERATE THE SYSTEM WITHOUT A FILTER IN PLACE.
INDOOR COIL - DRAIN PAN - DRAIN LINE
Inspect the indoor coil once each year for cleanliness and
clean as necessary. In some cases, it may be necessary
to remove the filter and check the return side of the coil
with a mirror and flashlight.
• Generally, the coil can be easily cleaned when it is dry.
If the coil is coated with dirt or lint, blow compressed air
or nitrogen through the supply air side of the coil fins
blowing dirt or lint from the return air side of the coil
onto the filter or cardboard placed between filter and
coil. Be sure lint and dirt is removed from the filter and
return air system.
• If the coil is coated with oil or grease, clean it with a
mild automatic dishwasher detergent and water solution. Rinse the coil thoroughly with clear water. Be
careful not to splash water excessively into unit and
system.
• Inspect the drain pan and condensate drain at the
same time the cooling coil is checked. Clean the drain
pan and condensate drain by removing any foreign
matter from the pan. Flush the pan and drain tube with
clear water.
• If the drain tube is restricted, it can generally be
cleaned with high pressurewater. Remove the drain
line from the unit away from the pan and coil to clear
the drain line.
IMPORTANT: Do not use caustic household drain
cleaners in the condensate pan or near the indoor
coil. Drain cleaners will quickly damage the indoor
coil.
V. ACCESSORIES
PLENUM ADAPTER ACCESSORY
RXBA-AC
This plenum adapter accessory is for installation on
cased indoor cooling and heat pump coils. This allows a
nominal size cased coil to be installed on the next smaller size gas or oil furnace. NOTE: This accessory is for
installation on coil casings to fit gas or oil furnaces
only - this accessory must not be used on electric
furnaces or heat pump air handlers. Consult the instal-
lation instructions packaged with the accessory for proper installation. The RXBA-AC (upflow) can be ordered
factory installed by designation as “with adapters” in the
coil model number.
PLENUM ADAPTER ACCESSORY
RXBA-AE
This plenum adapter accessory is for use with the 24-1/2"
wide cased indoor cooling and heat pump coils. This
allows a 24-1/2” wide cased coil to be installed on a 28”
wide oil furnace. This is a field installed accessory only.
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11
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12
CM 1109
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