background image

5292154-UIM-A-0317

Johnson Controls Unitary Products

9

6.

Install the TXV equalizer line onto the vapor line by hand tightening
the 1/4” SAE coupling nut to the equalizer fitting, and apply an addi-
tional 1/3 turn to seal. See Figure 17.

7.

Pass the temperature sensing bulb tube for the TXV through the
tube opening in the split grommet of the access panel.

8.

Install the TXV bulb to the vapor line near the cabinet, using the
bulb clamp(s) furnished with the TXV assembly. Ensure the bulb is
making maximum contact. See Figures 17 and 18, and accomplish
the following:

a.

If possible, install the temperature bulb on a horizontal run of
the vapor line. Ensure that the bulb is installed at a 10 o’clock
or 2 o’clock position.

b.

If bulb installation is made on a vertical run, ensure that the
bulb is a minimum of 8 inches (20.3 cm) away from elbow
coming out of the coil. Position the bulb with the tail of the
bulb at the top, so that the bulb acts as a reservoir. See Fig-
ure 19.

c.

Insulate the bulb using thermal insulation provided to protect
it from the effect of the surrounding ambient temperature.
Cover completely to insulate.

9.

After line set is installed, leak test the system.

ELECTRONIC EXPANSION VALVE (EEV) EQUIPPED 

COILS

Coils equipped with an EEV are available for use with a fully modulating
matched system. The EEV and controls are factory installed. The
installer only has to connect the included communication (4-wire) cable
to the communicating 4-pin connector on the furnace or modular blower
control board. See Figure 21 & 22 for connection diagrams and Figure
23 for wiring diagram.

 FIGURE 16:  

TXV Installation

 WARNING

Schrader valve core MUST NOT be installed with TXV installation.
Poor system performance or system failure could result.

 CAUTION

In all cases, mount the TXV temperature sensing bulb after vapor line
is brazed and sufficiently cooled.
Failure to use suction line split grommet may result in TXV failure.

 FIGURE 17:  

TXV Bulb and Equalizer line Installations

TXV / DI

S

TRIBUT

O

CO

UPLING

LI

Q

UID LINE / TXV 

CO

UPLING

TEFL

O

N WA

S

HER

TXV

TEFL

O

N WA

S

HER

DI

S

TRIBUT

O

R

A

0

28

1

-

00

2

!

!

TXV BULB
(W

ra

p w

it

h

insu

l

ati

o

n

.)

VAP

O

R LINE

LI

Q

UID LINE

TVX
E

Q

UALIZER

LINE

THER

M

AL EXPAN

S

I

O

N

VALVE (TXV)

DI

S

TRIBUT

O

R

B

O

DY

A

0

27

9

-

00

2

 FIGURE 18:  

Proper Bulb Location for TXV

 FIGURE 19:  

Vertical Temperature Bulb Orientation

TXV BULB
(

C

ov

er

 co

m

pl

ete

l

y

w

it

insu

l

ati

o

n

.)

VAP

O

R LINE

O

F LINE 

S

ET

A

0

26

9

-

00

2

C

LA

M

P

A

DETAIL A

TXV 

S

EN

S

ING BULB

(P

ass

 

t

h

r

o

ug

s

pl

it

 hol

e

in

 

gr

o

mmet

.)

VAP

O

R

LINE

NUT

NUT

B

u

lb 

at

10

 o’clock

po

siti

o

n

.

B

u

lb 

at

2 o’clock
po

siti

o

n

.

SC

REW

SC

REW

C

LA

M

P

9$325/,1(
2)/,1(6(7

$

&/$03

7;9
7(03(5$785(
%8/%

7$,/(1'83

´FP

127(

(QVXUHEXOELVRQRSSRVLWH
VLGHRIWXELQJEHQGSODQH

Summary of Contents for CF18A

Page 1: ...ure Drop for CF Models 12 SECTION I GENERAL This instruction covers the installation of the following coils with fur naces or MP ME MVC modular air handlers The coils have sweat connect fittings All coils are shipped with a low psi nitrogen holding charge See Figures 1 SECTION II SAFETY This is a safety alert symbol When you see this symbol on labels or in manuals be alert to the potential for per...

Page 2: ...HQ UHFHLYHG A0267 001 COIL ACCESS PANEL VERTICAL POSITION SECONDARY DRAIN VERTICAL OR HORIZONTAL POSITION PRIMARY DRAIN HORIZONTAL POSITION SECONDARY DRAIN VAPOR LINE LIQUID LINE LOCATION TABLE 1 Dimensions CF Upflow Downflow Full Cased Coils Models1 1 Asterisk denotes coil model is available as a flex coil or with factory installed TXV Dimensions 2 2 All dimensions are in inches Refrigerant Conne...

Page 3: ... CM18A 19 1 2 14 1 2 13 1 2 13 1 2 3 8 3 4 CM18B 19 17 1 2 16 1 2 16 1 2 CM24A 19 1 2 14 1 2 13 1 2 13 1 2 CM24B 19 17 1 2 16 1 2 16 1 2 CM24C 21 21 20 20 CM25B 25 5 8 17 1 2 16 1 2 16 1 2 CM30A 25 1 2 14 1 2 13 1 2 13 1 2 CM30B 23 17 1 2 16 1 2 16 1 2 CM30C 23 21 20 20 CM30D 25 24 1 2 23 1 2 23 1 2 CM36A 25 1 2 14 1 2 13 1 2 13 1 2 CM36B 25 5 8 17 1 2 16 1 2 16 1 2 CM36C 25 21 20 20 CM36D 25 24 1...

Page 4: ...ront of cabinet 2 Remove two screws from top front side of cabinet 3 Remove transition angle rotate angle 180 end for end and secure to top front side of cabinet 4 For installation with modular air handling unit remove the transition angle and discard it FIGURE 3 Component Location Cased Coil CM Model TABLE 3 Coil Air Flow Limits Coil 1 Size 1 Asterisk denotes coils only available with Factory Mou...

Page 5: ...Drain Connections for further installation instruction Horizontal right conversion CM Models only 1 Remove coil access panel 2 Slide coil drain pan assembly out of coil cabinet 3 Install the front and the back coil blow off wings apply only to N coils in accordance with the following a Locate 4 screws 2 front side and 2 back side securing the coil delta plates to the coil drain pan b Loosen each s...

Page 6: ... system or filter and will not be exposed to freezing temperatures Instruct the owner that the indoor coil drain pan should be inspected and cleaned regularly to prevent odors and assure proper drainage Coils should be installed level or pitched slightly toward the drain end Suggested pitch should not exceed 1 4 inch per foot of coil Drain plugs can be removed using a standard 3 8 drive socket rat...

Page 7: ...nd isolated by using appropriate hangers or strapping SECTION VIII COIL METERING DEVICES A piston or a TXV flex coil models is to be installed in the field There is an installation manual that comes with the TXV kit It is recommended to install the piston or TXV kit prior to installation of coil and brazing of line set Until brazing is completed and cooled the TXV sensing bulb must not be installe...

Page 8: ...the distributor assembly with supplied fittings Ensure Teflon washer is seated in distributor Hand tighten and turn an additional 1 4 turn to seal Do not over tighten fittings See Figure 16 5 Slide the nut removed in step 3 over the supplied liquid line Place supplied Teflon washer from TXV kit in place on TXV and install liq uid line to the top of the thermal expansion valve Adjust assembly so li...

Page 9: ...ILS Coils equipped with an EEV are available for use with a fully modulating matched system The EEV and controls are factory installed The installer only has to connect the included communication 4 wire cable to the communicating 4 pin connector on the furnace or modular blower control board See Figure 21 22 for connection diagrams and Figure 23 for wiring diagram FIGURE 16 TXV Installation WARNIN...

Page 10: ... 1 2 203 570 17 FFHVV SDQHO UHPRYHG 1 7 5 1 7 5 9 7521 2 9 35 0 5 5 1 137 9 325 5 5 5 17 1 211 7 21 48 5 5 5 17 1 211 7 21 25 217 5 1 3 1 6 21 5 5 1 25 217 2 1 7 21 3 3 7 5 137 6 21 5 5 1 83 2 137 9 57 5 1 3 1 2 203 570 17 FFHVV SDQHO UHPRYHG 1 7 5 1 7 5 9 7521 2 5217 9 2 2 25 0 02 9 1 225 2 35 6685 75 16 8 5 1 225 2 35 6685 75 16 8 5 FIGURE 21 Communicating Port of the ECM Modular Blower Control ...

Page 11: ...S ONLY IF ALUMINUM CONDUCTORS ARE PRESENT ALL APPLICABLE LOCAL AND NATIONAL CODES MUST BE FOLLOWED IPT INDOOR COIL PRESSURE TRANSDUCER ITS INDOOR COIL 7 03 5 785 SENSOR EEV ELECTRONIC EXPANSION VALVE 5292155 UWD B 0117 EEV MOTOR PR1 1 T1 GRN RED BLK WHT BLU BLU IPT YEL WHT BLK EEV RED BLU ORG WHT YEL ITS LED INDICATORS EEV CONTROL BOARD A C R B LEGEND EEV CONTROL LED DIAGNOSTIC CODES Control failu...

Page 12: ...48D 1250 1820 2250 2500 2795 3062 3307 CM49C 690 1150 1420 1630 1820 1990 2150 CM49D 970 1410 1740 2050 2290 2510 2710 CM50C 990 1440 1700 1950 2180 2390 2580 CM50D 940 1470 1890 2170 2430 2660 2870 CM60C 910 1551 1930 1820 2035 2229 2408 CM60D 1220 1730 2140 2440 2728 2988 3228 CM61C 990 1440 1700 1950 2180 2390 2580 CM61D 940 1470 1890 2220 2490 2720 2940 CM64D 970 1540 1800 1940 2169 2376 2566 ...

Page 13: ... 33 7 21 2 1 2 33 7 21 35 0 5 5 1 75 3 211 7 21 6 21 5 5 1 75 3 211 7 21 5 1 3 8 25 25 217 6 21 5 5 1 0 21 35 0 5 5 1 75 3 211 7 21 2 2 5 7 2 33 7 21 7 2 33 7 21 2 2 5 1 3 8 25 9 57 6 21 5 5 1 851 851 851 851 127 9HULI WKDW DOO GUDLQV DUH WUDSSHG RU SOXJJHG 83 2 33 7 21 2 1 2 33 7 21 5 1 5 2 5 1 5 2 5 7 2 33 7 21 7 2 33 7 21 2 5 1 5 2 5 1 5 25 0 35 0 5 5 1 75 3 211 7 21 6 21 5 5 1 75 3 211 7 21 5 ...

Page 14: ... change without notice Published in U S A 5292154 UIM A 0317 Copyright 2017 by Johnson Controls Inc All rights reserved Supersedes 1187005 UIM G 0816 York International Corp 5005 York Drive Norman OK 73069 NOTES ...

Reviews: