LENNOX Controls And HVAC Accessories Manual L0806307

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: 6

Download
Open PDF In Browser	View PDF

COOLING UNITS
KITS AND ACCESSORIES

Tech n ical
bHcations
Litho U.S.A.

,1,_)2006 Lennox

Industries

Dallas, Texas, USA

INSTALLATION

LOW AMBIENT

505,224M
08/06
Supersedes 05/06

inc.

CONTROL
KIT

INSTRUCTIONS
FOR LOW AMBIENT CONTROL KIT LB-101123C
USED WITH: HSXA19-038
& XC21 CONDENSING
UNITS;
HPXA19-038 & XP19 HEAT PUMP UNITS

1 - Turn off the electrical power to the unit.

Package 1 of 1 contains the following:
1 - Low ambient pressure switch assembly 83L6001
(S11)
2 - Relays - part #69J8001 (K58 and K159)
10 - 20" Lengths of wire (c/w 3/16" Female quick connects on one end of each wire)
10 - Wire nuts
4 - ll10-16 X 5/8" S.D.S.T. screws
1 - Schrader depressor tee with seal cap
Ordered separately:

2- Remove compressor compartment access panel, if
applicable.
3 - Install provided low ambient pressure switch on open
port (no valve core) of provided tee fitting.
NOTE - Pressure switch must be installed before
tee is installed to avoid refrigerant loss.
4 - Install tee fitting on condensing unit liquid line service
port.
5 - Install cap on valve core port and tighten to 6 to 8 ft.Ibs.
6 - Route pressure switch wires into control box and connect per applicable unit wiring diagram.

1 - Properly sized freezestat (S49)

7 - A freezestat, sized per table 1 and ordered separately,
must be installed. Install the freezestat near the evaporater coil discharge line (on the last 5/16" or 3/8" bend
of the indoor coil) or on the suction line.

A IMPORTANT

Table
Freezestat
Tubing
Size

The low ambient control pressure switch (Sll) cycles the
outdoor fan, while allowing continuous compressor operation during a cooling demand. This intermittent outdoor fan
operation maintains a minimum pressure differential
across the expansion device as the ambient temperature
drops, thus reducing capacity losses during low ambient
conditions. The freezestat (ordered separately) senses
suction line temperature and cycles the compressor off
when suction line temperature falls below its setpoint. This
kit is designed for use in ambient temperatures that are no
lower than 30°F (-1°C) unless otherwise noted in the Engineering Handbook. Use this kit only with HSXA19-038,
XC21, HPXA19-038, or XP19 units in R410A refrigerant
applications.

IIIIIIIIIIIIIIIIIIIIIIIIIIIIHIIIIIIII

Selection

Wire
Length

Wire
Gauge

Lennox
Part No.

3/8"

90-13/16"

93G35

112"

140-13t16"

39H29

5/8"

36-1/2"

50A93

HPXA19-038 and XP19 Units - Use the four provided
screws to install the provided K58 and K159 relays in
the control box,
K58 or K159 Relay

9
A_B

Figure 1

with a crankcase heater.

08/06

8 - HSXA19-038 and XC21 Units - Use the two provided
screws to install the provided K159 relay in the control
box.

NOTE - This kit may be applied in expansion valve systems only. It is not suitable for use in systems which use
capillary tube metering devices.
All units are factory-equipped

(68M04)

Page 1

505,224M

IIIIIIIIIIIIIIIIIIIIIIIIIIIIII

Complete the wiring connections per the appropriate wiring diagram. See figures 2 through 5.

The provided low ambient pressure switch is factory set for
450 psig (3100 kPa) cut-in and 240 psig (1600 kPa) cutout. This switch is not adjustable,
The freezestat (ordered separately) will open at 29°F
(-2°C) and close at 58°F (10°C), See table 1,
NOTE: Use ONLY expansion valve metering devices on
units with low ambient kits.

Cooling

Set the room thermostat to call for cooling. The defrost
board in the unit will receive a Y and O signal from the room
thermostat. The O signal will energize the reversing valve
and the K58 relay coil, Contacts K58-1 will open, The Y signal will go through the freeze stat to Y1 on the defrost
board. The signal will go into defrost board to the HI-PS terminals, out to the high pressure switch and discharge thermostat, then back to the other HI-PS terminal. The signal
will come back out of the defrost board on the Y terminal,
which will energize the compressor contactor coil. The
compressor will cycle ON. The outdoor fan motor will be
OFF until the liquid line pressure reaches the setting of the
low ambient pressure switch (450 psig - 3100kPa). The low
ambient pressure switch will close and K159 relay coil will
be energized. K159-1 contacts will close and the outdoor
fan motor will cycle ON,
NOTE - The outdoor fan motor will be cycled by the low ambient and K159 relay, During a call for cooling when the liquid line pressure rises above 450 psig (3100 kPa), the outdoor fan will cycle ON, When the liquid line pressure falls
below 240 psig (1600 kPa), the outdoor fan will cycle OFF.

Mode

HSXA19-038 and XC21 Units
Set the room thermostat to call for cooling, The unit will receive a Y signal from the room thermostat through the field
mounted freeze thermostat. The compressor will cycle
ON. The outdoor fan will be OFF until the liquid line pressure reaches the ON setting (450 psig - 3100kPa) of the
low ambient. The low ambient pressure switch (S11) contacts will close, and the K159 relay coil will be energized,
K159-1 relay contacts will close, and the outdoor fan motor
will cycle ON,
NOTE - The outdoor fan motor will be cycled by the low ambient and K159 relay. During a call for cooling when the liquid line pressure rises above 450 psig (3100 kPa), the outdoor fan will cycle ON, When the liquid line pressure falls
below 240 psig (1600 kPa), the outdoor fan will cycle OFF.
HPXA19-038 and XP19 Units

Heating Mode
HPXA19-038 and XP19 Units
Set the room thermostat to call for heating, The defrost
board in the unit will receive a Y signal from the room thermostat, The O signal from the room thermostat is not energized, so the K58 relay coil will not be energized. Contacts
K58-1 will remain closed. The Y signal will go through the
freeze stat to Y1 on the defrost board. The signal will go
into defrost board to the HI-PS terminals, out to the high
pressure switch and discharge thermostat and back to the
other Ht-PS terminal. The signal will come back out of the
defrost board on the Y terminal which will energize the
compressor contactor coil, The compressor will cycle ON.
The K58-1 relay contacts (which are normally closed) will
prevent the low ambient pressure switch from interrupting
the outdoor fan motor operation during the heating mode,

Page 2

HSXA19-038
B4
OUTDOOR
FAN
[LEAOLES5 }

Wiring

G32V,G60V

Diagram

INDOOR
UNIT
A92
TBI ,_

SIGNATURE
51M27
THERMOSTAT

A2 _,

GROUND
G60
INDOOR
UNIT

RED
RED
_ 230
BLUE
HI SPEED
YELLOW LOWSPEED
BLACK COMMON24V

CAPACITORF_

TBI
F---

THERMOSTAT

W951
KI
COMPRESSOR
CONTACTOR

[]

B_]]-

[EF
A132
DIAGNOSTIC

YL-_

MODULE

El-'

-- IZ
_-

_----.-__ _

BI
COMPRESSOR

SB7

PRESSURE
_ITCH

CB31MV,CBX32MV
INDOOR
UNIT

$4
_
HIGH
_:_3/PRESSURE
"_
SWITCH

FRED
BLUE
YELLOW

TBI

---,_-_

/_
_'=--_

TKI59-I

_YLW
.'_

"K-'L
_'

_ -{_--

MPRESSI

NTACTOI

TO-"[ I-.,-(_;
k'

.T=

L. __

I-

IN-.

.-@

-@
-@

Gl Z_

A,32

D,
HRI

SIGNATURE
51M27
THERMOSTAT

( )'.I"[.)-0-._
O_
.r-.
511

RED

-4_

YLW 41-

41-

F--

CB29,CBJO
INDOOR
UNIT TBI

A132

THERMOSTAT

OUIPMENT
;ROUND

AZ _

NOTEFOR USE WITH COPPER CONDUCTORS
ONLY.REFER
TO UNIT RATING
PLATE FOR MINIMUM
CIRCUIT
AMPACITY
AND MAXIMUM OVERCURRENT
PROTECTION
SIZE

NtNt-

-'_REFER
TO COMPRESSOR
IN
UNIT FOR ACTUAL TERMINAL
ARRANGEMENT

RED

.,ll-J

s_g
WARNINGELECTRIC
SHOCK HAZARD,CAN
CAUSE INJURY
OR DEATH.UNIT
MUST BE GROUNDED
IN
ACCORDANCE
WITH NATIONAL
AND LOCAL CODES.

L2
COMPRESSOR
CONTACTOR
Z_

REMOVE

•_

ON Ag2 CUT
TO R, WHEN

JUMPER

FOR

TWO

ONBOARD
HUMIDITY

STAGE

FOR CONDENSING
R TO 0 JUMPER,
APPLICATIONS,

OS
_INDICATES
_LINE
-- ---CLASS

UNIT APPLICATIONS
USE
REMOVE
IN HEAT PUMP

OPTIONAL
COMPONENTS
VOLTAGE FIELD
INSTALLED
II VOLTAGE
FIELD INSTALLED

VARIABLE

LENNOX

A:_ REMOVE
OS TO YI JUMPER WHEN
HUMIDITY
CONTROL
IS USED
WHEN TWO STAGE THERMOSTAT
SECOND
STAGE HEAT BULB TO
AND REMOVE JUMPER BETIEEN

FREEZESTAT

COOL

W91€ JUMPER FROM
CONTROL
IS USED

•_NON
Ag2 DO NOT CUT ONBOARD
wg51 JUMPER
FROM R TO 0. IT IS USED FOR APPLICATIONS
FOR CONDENSING
UNITS
Z_

N-

TYPICAL

FAN

AND KSB
CONTROLS

ARE

OPTIONAL

(Be)

LOWAMBIENT KIT FOR
HSXAIg-OGB-230-02

15 USED, CONNECT
TERMINAL
"W2"
"R" AND "W2"

____L34
SOLENOID IS LOCATED IN COMPRESSOR,
COIL IS 24 VOC, 00 NOT CONNECT 2_VAC
TO COIL TERMINALS.
A%SII,KI59
AMBIENT

MOTOR

COOLING UNITSCONDENSING UNITS

Supersedes

No,

LOW
Ne_

NOTE= MINIMUM
TRANSFORMER
INDOOR UNIT-€O VA

Form

0506

REQUIRED

For_

No.

554,45
(_)gO06L_a_x la_u=_,l_= In©.

Figure

Page 3

L I f ho U, S, A.

XC21 Wiring

Diagram

64-0,850
INDOOR
UNIT
F
TBI

66O

THERMOSTAT
AZ _,

INDOOR

I,Gs,_

-6

YLW
BL

41-

THERMOSTAT

-@ t
-@1

r .....
I
N- ....
I
RED

G61 V, G60V SIGNATURE
81MO7
THERMOSTAT
A2

INDOOR
UNIT A92
TBI

@ ....

-@1

---- ....

--@1

RED

--I--(G)

YLW

41-

--I-_

®1

_'_
--Co)I

YLW

--@I

BLK
BRN

- -- --,-0t

•

BRN

I-_l

Be
OUTDOOR FAN
(LEADLESS)

BI
COMPRESSOR

587

RED
RED
BLUE
YELLOW
BLACK
GREEN

J
J

PRESSURE
OW
SWITCH

6ROUND

CAPACITOR___ L_

} 230
HI SPEED
LOW SREED
COMMON 2¢V

KI
COMPRESSOR
CONTACTOR

--------Hn

5€
PRESSURE
HIGH
SWITCH

RIO
K I B9_..2

BLUE

_/Z__s4o

,K!59

YLW

I c'J l...

_
_jAI32
_F_

L' _ON_K_

CBSIMV, CBX32MV
INDOOR
UNIT
TB I

I BLOEI
" "

SIGNATURE
B IM27
TRERk_ST_T
A2

B_,'_

,_-_

HRI

I
I
I
I

)

I_
F'f-Ai_2

_B_o

----J J

UNIT

THERMOSTAT

®1

-------@

'_ []

--------@

[]

--_---0

r----@l

[] ----e

L_ __

ZDUIP_ ENT
BROU_{

I
eFJ
r-

RE_D

t
r

L2_

TYPICAL
FREEZESTAT

tN- .....
__ .....
---....

-@l
-@l
-@ i

[E]- .....

-@I

.....

)

/_k NOTE-FOR USE WITH COPPER CONDUCTORS
ONLY,
REFER TO UNIT RATING PLATE FOR MINIMUM
CIRDUIT AMPACITY AND MAXIMUM OVERCURRENT

FOR

WARNINGELECTRIC SHOCK HAZARD,CAN
CAUSE INJURY
OR DEATH,UNIT
MUST BE GROUNDED
IN
ACCOROANCE
IITH NATIONAL
AND LOCAL CODES,

./4k REMOVE

JUMPER

FOR TWO

STAGE

I
-,e---------INDICATES OPTIONAL COMPONENTS
_LINE
VOLTAGE FIELD INSTALLED
-- ---CLASS
II VOLTAGE FIELD INSTALLED

COMPRESSOR
CONTACTOR

PROTECTION
SIZE
•_REFER
TO COMPRESSOR
IN UNIT
ACTUAL TERMINAL ARRANGEMENT

,-@)

REMOVE

HUMIDITY CONTROL
IS USED
_IHEN TWO STAGE THERMOSTAT
SECOND STAGE HEAT BULB TO
AND REMOVE JUMPER BETWEEN

/(_k L3€

/_, ON A92 DO NOT CUT ONBOARD W951 JUMPER
FROM R TO O. IT IS USED FOR APPLICATIONS
FOR CONDENSING
UNITS

DS TO

UNIT APPLICATIONS
USE
REMOVE IN HEAT PUMP

COOL

ON Ag2 CUT ONBOARO W914 JUMPER FROM DS
TO R, WHEN HUMIDITY CONTROL
IS USED

FOR CONDENSING
R TO 0 JUMPER,
APPLICATIONS.

SOLENOID

JUMPER

i'k

LENNOX

IHEN

IS LOCATED

COIL IS 2€ VDC, DO
TO COIL TERMINALS.

GE VARIABLE

IS USED, CONNECT
TERMINAL "V/2"
"R" AND "12"

FAN

IN COMPRESSOR.

NOT CONNECT

LOW AMBIENT

24VAC

CONTROLS

NOTE= MINIMUM TRANSFORMER
INDOOR UNIT-40 VA

Figure

Page 4

B$'

xc2_-o_-2so
xc2_-os6-_so
xcz_-o_e-zso
xcz_-o6o-zso
0406

OPTIONAL

MOTOR

COOLING UNITSCONDENSING UNITS

REQUIRED

Su_erlede_

F°r_

No_ Form No,
IN

554,862W

N_*

HPXA19-038
KIDS
SOLENOID

n
E
YI

AI32
OIABNOSTIC
MORULE

Diagram

OR_

RELAY
DE_OST

Wiring

CONTROL

FAN_

CC
OUT

v
CO

L=_-PS

A
v

:o_ESSl

R 0

;ONTACTOf

_RV
3-OUT

COIL

TAS_
CAPACITOR

TRANSFORMER

RT21

PRESSURE
SWITCH

COIL
SENSOR

SZ5
THERMOSTAT

L®

587 LOW
PRESSURE
SWITCH

$5
OISCH TEMP
SWITCH

REVERSING
VALVE

NOTEA_ FOR USE WITH COPPER CONDUCTORS
ONLY.REFER TO UNIT RATING
PLATE FOR MINIMUM CIRCUIT
AMPACITY AND UAXI_JM OVERCURRENT PROTECTION SIZE

REFER TO COMPRESSOR IN UNIT
FOR ACTUAL TERMINAL ARRANGEMENT.

RTI 3
/_k

ANBIENTSENSOR_

WARNINGELECTRIC SHOCK HAZARD,CAN CAUSE INJURY
OR DEATH.UNIT MUST BE GROUNDED IN
ACCORDANCEWITH NATIONAL AND LOCAL CODES.
REMOVE JUMPER FOR _
RTI4

A
•B_ £23 CLOSES AT LOW AMBIENT TEMPERATURES TO
OPERATE SECOND STABE COUPRESSORON HEATIND
/_

LSA SOLENOID IS LOCATED IN COMPRESSOR,
COIL IS 24VOC, DO NOT CONNECT 2AVAC
TO COIL TERMINALS
SII,
K159 AND K58 ARE OPTIONAL
ANBIENT CONTROLS

SIGNATURE
51U28

STAOE COOL

SENSOR, OUTDOORTEMP (OPTIONAL)

CB51MV
CBX32MV
TBI

BLACK
RED

LOW

COMPRESSOR
CONTACTOR

A2
THERMOSTAT

.....
ii

(

(uir

I--5€0

0.4)-

®
-Q

÷
--LINE
-- --

--CLASS

VOLTARE FIELD INSTALLED
II VOLTARE FIELD INSTALLED

6E VARIABLE

(B4)

HEAi PUMP
OUTDOOR UNITS

LENNOX

EOUIPMENT
GROUND

FAN MOTOR

LOW

AMBIENT

KIT

FOR

HPXAI 9-038-230-02
RTI5

COMPRESSOR
CONTACTOR

OSOG !Super$*_*s
Ntw F_m

Fo_= No
No.

534-, 452'//
(_;{_06

Figure

Page 5

_.t_nll

Intullflll

In=.

LIth_

U.S.A.

XP19 Wiring
AI08
DEFROST CONTROL c(_OIL

Diagram
RT21
RT I5
DEFROST AMBIENT
COIL
SENSOR
SENSOR

LUG
GROUNDI-_

RT2B
DISCHARGE
SENSOR

@@@

A132
DIAGNOSTIC
MODULE
(_OUT

_oPs

COM%ESSOR
HIGH
CONTACTOR

0
0

o°Y,
OUT
,PS

CAPACITOR
J,_7_
P47[ZZZ]

BI L_
COMPRESSOR

PRESSURE
SWITCH

0
(_2 OUT

$87 LOW
PRESSURE
SWITCH

kI
REVERSING
VALVE

©@

SIGNATURE

CB31MV

81MZB
A2

RED
BLUE

Z_
08
KI
I

II
^
/9_

_I_

L_AIII

E:(,_

_.DIS

K_
_h

oOUT

I
--_

l_Tx.
|II_
_X

AI5

EOUIPMENT

I
I _I _

COMPRESSOR
I _I

@
®
©

ifFREEZESTAT
I I_-_o--ISA__

N .,-.FT-(_

HR, B'fA66111

RTI4

r 17y_c_-

lllr ....
IIII r----lllllriiii I
---I II I I
i Iii I
J !II I ,
_ II_ i I

IJqll
_,_

___ ___ .i_J 7

z4v 4''v'

I d_.._-

I__J_J II
L_U_J.

)

I r_"_sl-I

_KI59

_,_TA_RJ "IRED
I
LZ _
L_

K58

NOTE-FOR USE WITH COPPER CONDUCTORS ONLY.
REFER TO UNIT RATING PLATE FOR MINIMUM
CIRCUIT AMPACITY AND MAXIMUM OVERCURRENT
PROTECTION SIZE

_LINE
VOLTAGE FIELD INSTALLED
....
CLASS I VOLTAGE FIELD INSTALLED
GE VARIABLE FAN MOTOR (B4)

REFER TO COMPRESSOR IN UNIT
FOR ACTUAL TERMINAL ARRANGEMENT.
/_ WARNINGELECTRIC SHOCK HAZARD,CAN CAUSE INJURY
OR DEATH.UNIT MUST BE GROUNDED IN
ACCORDANCE WITH NATIONAL AND LOCAL CODES,
/¢X REMOVE JUMPER FOR TWO STAGE COOL

LENNOX

XP 19-024-230
XP 19-036-230

RTI¢ SENSOR, OUTDOOR TEMP (OPTIONAL)
•_

HEAT
PUMP
OUTDOOR
UNITS
XP I 9-048-230
XP 19-060-2.50

L3€ SOLENOID IS LOCATED IN COMPRESSOR,
COIL IS Z4VDC, DO NOT CONNECT Z4VAC
TO COIL TERMINALS
OZ¢ UNITS COME FACTORY WIRED FOR LOW
OUTDOOR FAN SPEED ONLY, HIGH SPEED Y2,
(BLUE WIRE) IS NOT CONNECTED
K4g RELAY FIELD ADDED FOR TWO SPEED
OR VARIABLE SPEED AIR HANDLERS

0606 [S_w,r_,e_ Form No,
1
New

Form

NO,

554,863W

OPTIONAL LOW AMBIENT CONTROLS

(_20_

Figure

Page 6

L*_X

Ifl_Ilrt@l

I_¢.

Lit_o

U,S*A.

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.2
Linearized                      : No
Page Count                      : 6
Page Layout                     : SinglePage
Page Mode                       : UseNone
Producer                        : Goby Monitor Application version 4, 0, 0, 13
Create Date                     : Mon Jun 30 04:48:19 2008
Author                          : 
Title                           : 
Subject                         :

EXIF Metadata provided by EXIF.tools

LENNOX Controls And HVAC Accessories Manual L0806307

Navigation menu

Versions of this User Manual:

Views

Navigation