Nortek IQ Drive C5BH-E User manual
CAUTION:
Read the Installation Instructions
supplied with furnace/air handler
and observe all safety requirements
outlined in instructions and/or furnace/
air handler markings before proceeding
with installation of the coil
These instructions are primarily intended to
assist qualified individuals experienced in the
proper installation of this appliance. Qualified
installer must have specific IQ DriveTM system
training. Some local and national codes require
licensed installation/service personnel for this
type of equipment. Read all instructions carefully
before starting the installation.
INSTALLATION INSTRUCTIONS
Split System Indoor Coils for Systems
2
3
Table of Contents
1. General Information ............................................................................................................... 4
2. Coil Specifications ................................................................................................................. 4
3. Coil Installation....................................................................................................................... 5
•UpowFurnace
•HorizontalFurnace
•HorizontalReadyCoilsforHorizontalLeftInstallation
•HorizontalReadyCoilsforHorizontalRightInstallation
4. Refrigerant Line Connections ............................................................................................... 6
5. Completing the Installation ................................................................................................... 7
•CondensateDrain
•AirFilters
•Close-offPlatesandPanels
•RefrigerantCharging
6. Maintenance and Service ...................................................................................................... 7
4
1. GENERAL INFORMATION
IQ™ cased coils are designed for upow ap-
plications or horizontal applications. Coils are
equippedwithbrazetyperefrigerantconnections
for easy installation.
ThesecoilsareequippedwithESXstepmotor
expansion valve which provides precise ow
control for maximum efficiency and reliability.
TheESXvalveiscontrolledtomaintainconstant
superheatinawiderangeofconditionsviaa
pressure transducer and a temperature sensor
installed on the coil suction header.
H
20 3/4"
B
16
5
/
8
"
W
A3/4"
13 3/8"
155/8"
19 3/4"
Figure 1.
Thesecoilsarealsoequippedwithacoiltempera-
ture sensor to monitor coil temperature during
dehumidification mode of system operation.
Readtheinstallationmanualsuppliedwiththe
outdoor unit for refrigerant line connection pro-
cedure,requiredlinesizes,andotherinformation
pertaining to the system installation.
1. RefertotheInstallationInstructionsofthe
outdoor unit for connection of the additional
componentsoftheIQdrivesystem.
2. Make certain that the air delivery of the
furnace/air handler is adequate to handle
the static pressure drop of the coil, filter, and
ductwork.
2. COIL SPECIFICATIONS
(1) Refer to sales specication sheets for Listed/Certied combinations of
equipment and required accessories.
(2) RefertothecurrentARIDirectoryforcertiedratingsofsplitsystems.
Coil Model (1)
C5BH
E36C-B
C5BH
E48C-C
NominalCapacityBTUH(2) 36,000 48,000
Width (in.) W 19 3/4 22 1/2
Height(in.)H 26 29
Top(in.)A 18 3/8 21 1/8
Connections
LiquidLine 3/8 3/8
SuctionLine 7/8 7/8
5
3. Where precise forming of the refrigerant
lines is required, a copper tubing bender
designedforthesizelinesusedisrecom-
mended.Avoidsharpbendsandcontactof
therefrigerantlineswithmetalsurfaces.
4. Refrigerant lines should be wrapped with
pressure sensitive neoprene or other suit-
ablematerialwheretheypassthroughthe
rawedgesofholes.
5. Coil must be level for proper condensate
drainage.
3. COIL INSTALLATION
Upflow Furnace —
1. Disconnectallelectricalpowertothefur-
nace.
2. Remove door and close off plate.
3. Remove the drain pan provided for hori-
zontalapplication.Installthecoilandlevel
it as needed to ensure proper condensate
drainage.(SeeFigure2)
4. Connecttherefrigerantlinesasoutlinedin
theRefrigerantLinessection.NOTE: Use
extra care not to damage sensor and
transducer.
5. Route all wires from valve, sensors and
transducer thru the strain relief bushing
(provided) and insert the bushing into the
hole in the close-off plate. Replace the
close-offplateandthedoor.
6. Usetheharnesswrapprovidedtoenclose
wires and bring thru the oval opening on
appropriate side of the furnace.Refer to the
wiring diagram provided with the outdoor
section and or gas furnace kit to connect
to valve controller and interface board.
7. Sealtheenclosureasrequiredtominimize
air leakage.
Figure 2. Upflow Furnace Application
Wires
from Coil
Blower
Kit
6
To Configure Horizontal Ready Coils for
Horizontal LEFT Installations:
1) Remove the coil access door.
2) IMPORTANT:Removetheplugfromoneof
thethreadedholes inthehorizontaldrain
pan.Completelyremovethewebbinglocated
inthethreadedholesofthehorizontaldrain
pan.Ifwebbingisnotremoved,thedrainwill
not function properly and ceiling damage
may occur.
3) Insertaplug(fromthehorizontaldrainpan)
into the open and unused drain hole in the
drain pan at the bottom of the unit to block
bypass air.
4) Remove the corresponding drain line knock-
outfromthecoilaccessdoortoallowaccess
tothehorizontaldrain.
5) Replace the door.
To Configure Horizontal Ready Coils for
Horizontal RIGHT Installations:
1) Removethecoilaccessdoor.Unscrewthe
line-settubeclose-offplatefromthefront
left cabinet rail.
2) Slide the coil and drain pan assembly out
of the unit.
3) IMPORTANT: Remove the plug from one of
thethreadedholesinthehorizontaldrainpan.
Completelyremovethewebbinglocatedinthe
threadedholesofthedrainpan.Ifwebbing
is not removed, the drain will not function
properly and ceiling damage may occur.
4) Remove the sheet metal hairpin covers
(if supplied) from the back of the coil and
discard.
5) Placethehorizontaldrainpanontheoppo-
sitesideofthecoil.Onunitswith2setsof
knockouts, remove the other set of knockouts
in the coil spacing plates and insert support
rod.
6) Insertaplug(fromthehorizontaldrainpan)
into the open and unused drain hole in the
drain pan at the bottom of the unit to block
bypass air.
7) Slidethecoilandthehorizontaldrainpan
assembly back into the unit. Reattach the
tube close off plate.
8) Remove the corresponding drain line knock-
outfromthecoilaccessdoortoallowaccess
tothehorizontaldrain.
9) Replace the door.
Note: All condensate pans have primary and
secondary drain connections to meet FHA
requirements. If the application is located in
or above a living space where damage may
result from condensate overflow, a separate
3/4 inch drain must be provided from the
secondary drain connection and a secondary
drain pan must be installed under the entire
unit. Run secondary drain lines to a place
where they are noticeable if used.
4. REFRIGERANT LINE
CONNECTIONS
Line Connections:
1. Remove the protective caps from the coil
and refrigerant line set and also remove the
holegrommetsandtubeclose-offinsulation
from around the tubes.
2. Cutthelinesettubingtotheproperlength.
Besurethatthetubinghasbeensizedin
accordancewiththeoutdoorunitspecica-
tions.
3. Inspectbothrefrigerantlines.Theendsof
the lines must be round, clean, and free of
any burrs.
4. Insertthelinesettubesintothecoiltube
stubs until they bottom out.
5. Brazethe individual connections withdry
nitrogenowingthroughthejointstoelimi-
nate internal oxidation and scaling.
CAUTION:
It is recommended to wrap a wet rag
around both the pressure transducer
and sensor while brazing to prevent
damage to these components unique
to the IQ DriveTM System.
6. Check the assembly for leaks with dry
nitrogen.
7. On horizontal applications re-position the
sensing bulb on the suction line so it is in
the 4 o'clock or 8 o'clock position on the
suction tube.
NOTE: Sensor bulb must be secure and
insulated.
7
5. COMPLETING THE
INSTALLATION
Condensate Drain:
CAUTION:
The indoor coil must be checked to
ensure a level installation. Failure to do
so may result in improper condensate
disposal, causing structural damage,
premature equipment failure,or possible
personal injury.
1. Thecoilcondensatepanisfurnishedwith
3/4"NPSCdrainconnections.UseaPVC
or similar material fitting to attach the drain
line to the pan. The fitting should be hand
tightened only. Overtightening may crack
the drain pan and cause a condensate
leak.
2. Connectthedrainlineandruntoasuitable
drain avoiding sharp bends and pinching of
theline.Installacondensatetrapandprime
withwater.
3. During the system checkout, inspect the
drain line and connections to verify proper
condensate disposal.
Air Filter —Airltersarenotprovidedasan
integralpartofthiscoil,however,altermust
be installed upstream of the coil and inspected
frequently.Whenthelterbecomescloggedwith
dust or lint, it should be replaced (disposable type)
orcleaned(washabletype).Theltershouldbe
inspectedandreplacedorcleanedatleasttwice
during the year, generally at the start of each
heating and cooling season.
Close-Off Plates and Panels — Installthenec-
essaryairclose-offplatesaroundtherefrigerant
lines and drain line where required. Reinstall
all inner and outer panels of the coil case and
furnacethatwerepreviouslyremovedtoinstall
the indoor coil.
Refrigerant Charging — These cased indoor
coilsarenotfactorychargedwithrefrigerant.
Itwillbenecessarytoevacuatetheindoorcoil
and line set prior to charging.Refer to the outdoor
unit installation manual for detailed charges and
instructions.
6. MAINTENANCE AND SERVICE
WARNING:
Ensure that all electrical power to the
furnace and outdoor (condensing) unit is
off before performing any maintenance
or service on the system.
To ensure optimum performance and to mini-
mize possible equipment failure, the following
periodic maintenance should be performed on
thisequipment:
1. Theairlterinstalledwiththesystemshould
becheckedandcleanedorreplacedtwice
per year.
2. Checkthecoil,drainpan,andcondensate
drain line for cleanliness at the start of
eachheatingandcoolingseason.Cleanas
needed.
CAUTION:
Do not operate the system without
having a suitable filter in place in the
return air duct system. Always replace
the filter with the same size and type.
7085980 (Replaces 7085540)
INSTALLER: PLEASE LEAVE THESE
INSTALLATION INSTRUCTIONS WITH
THE HOMEOWNER
Specications&illustrationssubjecttochange
withoutnoticeorincurringobligations(07/15).
O’Fallon,MO,©NortekGlobalHVACLLC2015.
AllRightsReserved.
This manual suits for next models
3
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