LENNOX Controls And HVAC Accessories Manual L0806301
User Manual: LENNOX LENNOX Controls and HVAC Accessories Manual LENNOX Controls and HVAC Accessories Owner's Manual, LENNOX Controls and HVAC Accessories installation guides
Open the PDF directly: View PDF 
.
Page Count: 8
| Download | |
| Open PDF In Browser | View PDF |
q _ _ Technical
J .J L Publications
Lithe U.S.A.
_;)2007
HEAT PUMP UNITS
KITS AND ACCESSORIES
503,802M
11/2007
Supersedes
DEFROST
CONTROL
KIT
2/98
INSTALLATION
INSTRUCTIONS
FOR DEFROST CONTROL KIT (23L00 - LB-93614)
USED WITH HP14 t 16 t 18 t 20 t CHP16 t 20 t 24 t AND CHP15-261 TO 461 UNITS
3- Remove existing S9 defrost (air-type) pressure switch
and install replacement S46 (refrigerant-type) pressure
switch as shown in figure 1, Replace switch cover.
Package 1 of I contains:
4- Install S6 defrost thermostat
shown in figure 1,
1--Defrost control assembly (CMC1 & K4)
2- Wiring diagrams stickers
on the liquid line as
5-Single-Phase
Units Only -- Start capacitor and
mounting bracket must be relocated to a position
outside of the control box, Remove the start C3
1--Bag assembly containing:
1- Defrost thermostat switch ($6)
1- Defrost (refrigerant-type) pressure switch
($46) assembly (HP14, HP16 and HP18)
capacitor and mounting bracket and discard the wires
connected to the capacitor.
Position capacitor mounting bracket below control
box, Use mounting bracket as a template to drill two
.218" diameter mounting holes. Use existing screws
to install bracket and capacitor,
1- 1/2" snap-hole plug (HP16 units only)
8- Wire nuts
1- Wire tie
2- Insulating sleeves
6- Position the CMCl defrost control in the control box,
2- #8 - 32 X 1/2" Screws
See figure 2, Use the mounting bracket as a template
to drill two 3/16" diameter holes. Use two #8 - 32 X
1- Saddle valve (HP14 and HP18)
1/2" screws provided to secure bracket,
7- Wire defrost components as shown in figures 4 and
6, Wires are identified in figure 7, Figure 8 shows
terminal designations
for older model Essex
cube-style relays versus standard relays,
This defrost control kit replaces the existing defrost
control systems in HP14, HP16, HP18, HP20, CHP16,
CHP20, CHP24 and CHP15-261 to 461 units.
This kit is used to upgrade units to a temperature initiated /
8- Affix appropriate wiring diagram adjacent to existing
unit diagram.
pressure terminated defrost system, Various defrost
components are used in each unit, Once updated, all
units will contain these four defrost components:
CMC1 Defrost Control
S6 Defrost Thermostat Switch
HP14 UNIT DEFROST SYSTEM
Install S46 replacement
defrost pressure
switch with saddle
valve/depressor tee (provided) on liquid line. See saddle valve
installation procedure in these instructions.
S46 Defrost Pressure Switch (refrigerant type)
K4 Defrost Relay
The replacement defrost control system checks every 90
minutes (factory-set) to determine if defrost is necessary.
If the defrost thermostat senses a temperature below
AIRFLOW
DIRECTION
$6
DEFROST
;TAT
35°F (1,6°C), the thermostat contacts close to initiate
defrost. When the pressure level sensed by defrost
pressure switch rises to 275 psi, switch contacts open and
defrost terminates.
<
1 - Turn off electrical power to unit at disconnect switch,
2- Remove access panels and remove defrost pressure
switch cover.
Page 1
EXISTING $8 DEFROST
PRESSURE SWITCH
FIGURE 1
9- Turn on electrical power to unit,
INSTALL CMC1 DEFROST CONTROL ASSEMBLY
10- Run defrost system through several cycles, Check for
proper function,
11- Reinstall access panels,
O
1- Turn off electrical power to unit at disconnect switch,
2- Remove access panels.
3- HP18 units - Install saddle valve on liquid line, Install
defrost refrigerant-type pressure switch/depressor
tee to saddle valve (early model units),
CHP16, 20, 24, and CHP15-261/461
DEFROST
RELAY
K4
units - Install
(refrigerant-type) pressure switch on existing liquid
line pressure tap fitting.
4- Position the CMC1 defrost control in control box and
BRACKET
SIDE OF
CONTROL BOX
use the mounting bracket as a template to drill two
3/16" diameter holes. Use two #8-32 X 1/2" screws
FIGURE 2
provided to secure bracket,
5-Wire
9- Turn on electrical power to unit,
defrost
components
as shown in figure
5
through 8. Wires are identified in figure 9. Figure 10
shows terminal designations for older model Essex
cube-style relays versus standard relays.
10- Run defrost system through several cycles, Check for
proper function,
11- Reinstall access panels,
6- Affix appropriate wiring diagram adjacent to existing
unit diagram,
7- Turn on electrical power to unit,
1 - Turn off electrical power to unit at disconnect switch,
8- Run defrost system through several cycles, Check for
proper function,
2 - Remove access panels and remove defrost pressure
switch cover,
9- Reinstall access panels,
3 - Remove existing defrost pressure switch and sensor.
Install snaphole plug (provided) into panel hole, If
electronic defrost pressure
switch has been
previously used, remove and discard the two
1 - Braze saddle valve (provided) onto 3/8" O.D. process
tube between unit distributor and drier for leakproof
joint, Cool with wet rag and clean joint. Apply process
hose to pressurize and check for leaks as shown in
figure 3,
IMPORTANT - Do not install saddle valve near an
pressure switch wires. Install replacement $46
(refrigerant-type)
pressure
switch
with
valve
depressor tee on service port of liquid line service
valve,
4-
Install $6 defrost thermostat on the
between the drier and the distributor.
existing fitting or solder joint.
liquid line
2 - After cooling, place teflon seal on pin as shown and
insert steel pin (core side down) into valve body.
5 - Route brown defrost thermostat wires through hole in
bottom or back of control box,
3 - Screw cap down on valve body, forcing steel pin to
pierce line. Use two wrenches to avoid breaking
brazed joint, Continue to tighten cap until valve body
is smoothly crimped over steel pin,
6- Position the CMC1 defrost control in control box and
use the mounting bracket as a template to drill two
3/16" diameter holes, Use two #8-32 X 1/2" screws
provided to secure bracket,
7- Wire defrost components
Wires are identified in
terminal designations
cube-style relays versus
as shown in figure 5 and 6,
figure 7, Figure 8 shows
for older model Essex
standard relays,
8- Affix appropriate wiring diagram adjacent to existing
unit diagram,
A - Defrost Timer
The defrost control will not allow a defrost to last more
than 14 minutes, The defrost timer can be field adjusted
from a 90-minute to a 30- or 60-minute defrost interval if
warranted by climatic conditions,
Page 2
._,
CHECK FOR LEAKS
AT BRAZE
INSERT STEEL
PIN INTO BODY.
SCREW CAP ON
CHECK VALVE CORE
TO MAKE SURE
iT IS TIGHT
BRAZE
SADDLE
VALVE BODY
ONTO TUBE
BODY TO
I_1
_
COOL WITH
WET CLOTH
STEEL
TEFLON
P,EROE TUBE
SEAL
PIN
USE TWO WRENCHES
TO AVOID
TWiSTiNG
FIGURE 3
B - Defrost Thermostat
The thermostat closes at 35°F + 4°F initiating the defrost
cycle. It is mounted on the liquid line between the drier
and the distributor.
C - Defrost Pressure Switch
The defrost cycle is terminated by the defrost pressure
switch when the switch senses a rise in pressure to a level
of 275 psi. If the coil pressure does not rise to this value
within the time override period of the defrost timer
(approximately
14 minutes), the defrost cycle is
terminated by the defrost timer. The pressure switch is
located as follows for the various units covered by this
instruction:
HP14/HP18
depressor tee.
liquid
line
with
saddle
valve/valve
HPf6 - service port of liquid line service valve with valve
depressor tee.
CHPf6, 20, 24 and CHP15-261/461 - existing liquid line
pressure tap fitting.
NOTE - Termination of the defrost cycle, by rising
refrigerant pressure or by defrost timer override, begins
another 90-minute (30- or @-minute) period before the
system checks for defrost again.
IMPORTANT - Inspect both sides of the outdoor coil
periodically and remove any grass, leaves, or other
obstructions.
DEFROST KIT WIRING FOR HP14 UNITS
DESCRIPIION
LO
SPEED
KEY
COMPONENT
* CMCI
IlMER=DEFROSI
*K4,-I,2,5
RELAY-DEPROSI]
KS,-_
K6
RELAY@EFROSI
RELAY-LATCH(IN
"86
"$46
2(LO
SPD)
UNIT)
SWITCH-DEFROST
SWI[CH-DEFROS1,TERMINAfION
T]
1RANS[:ORMER
CONqROL
* DENOTES NEW COMPONENTS,OTHERS
SHOWN ARE
EXTSTTNG,
COMPRESSOR
PRO1 EC1 i ON
MOD[ LE
=
=
HEAT PUMP OUTDOOR UNITS
DEFROST
FOR HPI4
K6
(IN
UNIT)t
CONTROL KIT
SERIES UNITS
208
Supersedes
or_
No.
230/60/I
New
orm
N_.
.552,7 I IW
(_
K5
LOW
SPEED
FIGURE 4
Page 3
1998
Lenno×
[_dus!r
e_
1_¢
h
i _ h 0
_U , S
A .
DEFROST KIT WIRING FOR
HP16, HP18, HP20 AND CliP15 UNITS
TBICHP}5 ONLY
4}
) s4
K4-3
D{
I
PRESSURE
SWITCII
B4
DEFROST
RELAY
(K4
KI
ON CHPL5)
COMPRESSOR
CONTACTOR
K4 2
\
REMOVE EXSIST!NG
WIRES FROM TERMINALS
1,2,&
3 OF EXISTING
DEFROST RELAY.
LEAVE REST OF WIRES ON POLES
2 & 5 AS IS.
L.eNNDX_,o_,_.
DEFROST CONTROL KIT
FOR HP 6,HPI8,HP20
& CHPI5
SERIES UNITS
No.
New
Form
No.
552,7lOW
(_199B
Lennox
Indusl_ies
Inc.
* DENO]ES
NEW COMPONENIS,O1HERS
SHOWN ARE EXISTING,
DESCRIPTION
COMPONENT
BI
COMPRESSOR
B4
MOTOR-FAN
..........
t_M_! .................................................................
...................................................................
HR}
HEATER
COMPRESOR
CONIACTOR-COMPRESSOR
.....................
_.L -I
RELAY DEFROST
*K4,-I,2,3
K31
54
' $6
. SS6
208-250/60/I
Form
124v tOM
w
KEY
WlRN@OIAGRAMJl
9s....................
HEArPuMP
ou soo uNi -s
Supersedes
&
L
fho
U.S.A.
FIGURE 5
Page 4
RE1AY HARD START
KIT
iSWITCH-PRESSURE,HIGH
SWITCH
DEFROST
iSWlTCH-DEFROST,TERMINATION
DEFROST KIT FIELD WIRING
$46
TERMINAL
DEFROST
PRESSURE
(E)
..jREO(16")
["_
SWITCH
KI
COIL
OR
(YI)
(M)
STRIP
$6
TERMINAL
DEFROST
(})
T-STAT
S[RIR
BROWN_"
EG/
EXISTING
PIGTAIL
/\
ORANGE(5")
BLUE
\
(}2")
/
ORANGE(4")
EXISTING
CMC}
=IGTAIL
0
©
/
_$46
o8
\
\
'-rl
TERMINAL
(2)
DEFROST
PRESSURE
SWI]CH
(6")
o_
"o
on
THI
oS
m
ORANGE(6")
\
EXISTING
4_
DEFROST
\
T-STAT
$6
24
VOLTS
B4
I
FAN
COIL
HOT
_#_
(A)
EXISTING
DE ROST
©
k..___
RELAY
K I
(I)
.YELLOW
(iS"}
-_24V
COMMON
KI
COIL
TERMINAL
@_J
STING
°IGTAIL
(2)
DEFROST KIT WIRING FOR
CHP16, CHP20, CHP24 UNITS
24V
HOT
PRESSURE
SWITCH
0
KEY
_CMCI
KI,-I
• K4,-I,2,3
K26,-I,2
$4
_$6
$46
OUT
_)
L
DESCRIPTION
COMPONENT
TIMER-DEFROST
CDNTACTOR-CONPRESSOR
RELAY-DEFROST
RELAY-EMERGENCY
HEAT
SWITCH-PRESSURE,HIGH
SWITCH-DEFROST
SWITCH-DEFROST,TERMINATION
K1
COMPRESSOR
( _ CDNTACTOR
K4-1
24V
CON
DENOTES
NEW COMPONENTS,OTHERS
SHOWN ARE EXISTING.
WIRING DIAGRAH ii/07
HEAT
PUHP-DUTDDDR
DEFROST
CONTROL
CHPI6,CHP20
AND
SERIES
UNITS
KIT
CHP24
Form
Form
FOR
Supersedes
UNITS
C) 2007
No,
New
537021-01
No.
Litho
FIGURE 7
Page 6
U,S,A.
DEFROST KIT WIRING FOR
CHP24D UNITS
24V
POWER
DISCONNECT ALL POWER BEFORE SERVICINO
IF ANY WIRE IN THIS APPLIANCE IS REPLACED,
IT MUST BE REPLACED WITH VIRE OF LIKE SIZE,
RATING AND INSULATION THICKNESS
K3-1
(_
ECONOMIZER
BLOWER(O)
J35 •
<
-t
_._6
HEAT 2(W2)
HEAT l(Wl)
-6
P66
K6
<
WARNING-ELECTRIC SHOCK HAZARD_AN
CAUSE INJURY OR DEATH, UNIT
_MCI MUST DE GROUNDED IN ACCORDANCE WITH NATIONAL ANO LOCAL
CODES
-8
I
//\CONNECTIONS FOR FACTORY
INSTALLED SMOKE DETECTOR
AI7.MAX LOAD O.IVA 24VAC
CLASS II
I
DESIGNATION
I
VOLTAGE
LETTER
!
I
Y
1208-230/60/3
-3
57516013
24V COMMON
TD2
DENOTES OPTIONAL COMPONENTS
/_
MEO SPEED(BLACK TO J43-3 & BLUE TO J43-2)
LOW SPEED(BLACK TO J43-4 & BLUE TO J43-0)
NOTE-FOR USE WITH COPPER CONDUCTORS
ONLY, REFER TO UNIT RATING PLATE FOR
MINIMUM CIRCUIT AMPACITY AND MAXIMUM
OVERCURRENT PROTECTION SIZE
FACTORY
INSTALLED
OPTION
$3
NOT USED
V/HEN LOW
AMBIENT KIT
IS FACTORY INSTALLED
_EOUIPMEN_
GROUND
575V
27
NOTE_USE COPPER
CONBL_TORSONLY
460VK3-2:
DOB-230V,
460v HOOKUP
A
/6_ INSTALL JUMPER WHEN LOW AMBIENT KIT
FIELD INSTALLED
DESCRIPTION
(EY
COMPONENT
'35 PLUO-TES T
43 PLUG-BLOWER MOTOR
47 PLUG-OUTDOOR PAN
._
PLU_-UNIT TO _MOK_ I)ET_CTOR
178 PLUG-SMOKE
DETECTOR
SWITCH-LIMIT.LOW
COMP 1
/COMPRESSOR MONITOR
;4
SWITCH-LIMIT HI PRESS COMP I
;6 SWITCH-DEFROST COMP I
;11 SWITCH-LOW PRESS.LOW AMD KIT
;04 SWITCH-LOSS OF CHARGE,CORP I
;4G SWITCH-DEFROST
TERMINATION
;48 SWITCH-DISCONNECT
P43
GROUND
;75 SWITCH-FIR_STAT O
I
TRANSFORMER-CONTROL
4
TRANSFORNER-BLOVOR MOTOR
'D_ TERMINAL STR_P-UNIT
"D13TERMINAL STRIP-POVOR DISTRID
DIRECT DRIVE
N
2.
LINE VOLTAGE
J43
5
•
_X6
z
•
4
z
i
_:
HEAT
WIRINGDIAGRAMII/O7
PUMP-PACKAGED
HEAT PUMP SECTIrIN B4
CHP24D-G53-I-Y,G,JI
FoPr_
NO,
I
New
FOP_
NO,
537020-01
SL_per_edes
C4
FIELD INSTALLED
3/_
208/230V
_) _007
FIGURE 8
Page 7
I
Lltho U.&A,
WIRE IDENTIFICATION
©
©
@
K4-6
K4-9
D
D
K4-3
D
CMC1 "24v"
D
Red 6"
a
Defrost Relay Coil "A"
Red 12"
a
Red 6"
a
K1 Contactor"Tl"
B4 Outdoor Fan Motor
Blue 12"
<:::3 24V Hot, $46-1, K5-4 (HP14)
Existing Wire
Existing Wire
Existing Wire
©
@
©
@
@
K4-7
D
K44
D
Brown 6"
a
s46-2, s6-1
Brown 4"
<::3 K4-A
Existing Wire
K4-4
I::C) Orange 6"
K4-B
E:::) Orange 4"
K4-8
D
K4-2
D
CMC1 "COM" D
CMC1 "HLD"
D
©
@
C:] S6-2, K6-A (HP14)
a
CMC1 "OUT"
a
CMCl
Orange 5"
Yellow 4"
CMCl
"RST"
"COM"
Yellow 13"
4::3 K1-B, COM, K5 (HP14)
Red 16"
<::3 K1-A, K5 (HP14)
Existing Wire - HP14
Existing Wire - HP14
FIGURE 9
RELAY TERMINAL IDENTIFICATION
EXISTING DEFROST
RELAY
REPLACEMENT DEFROST
RELAY
8
1
C:::223
2
-[333333
-_ 3
---4
_t
_t
C
C
................
i
....................
A
i
B
.................
/
J
FIGURE 10
Page 8
Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.2 Linearized : No Page Count : 8 Page Layout : SinglePage Page Mode : UseNone Producer : Goby Monitor Application version 4, 0, 0, 13 Create Date : Mon Jun 30 04:47:53 2008 Author : Title : Subject :EXIF Metadata provided by EXIF.tools