LENNOX Controls And HVAC Accessories Manual L0806364

User Manual: LENNOX LENNOX Controls and HVAC Accessories Manual LENNOX Controls and HVAC Accessories Owner's Manual, LENNOX Controls and HVAC Accessories installation guides

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LENNOX

INSTALLATION
INSTRUCTIONS
502.726M
10/91

Litho U.S,A.

KITS COMMON TO COOLING
AND HEAT PUMP EQUIPMENT

INSTALLATION
I-SHIPPING

INSTRUCTIONS
INDOOR BLOWER CONTROL KIT (LB-58773DA)
WITH HS11, HS14, HP11, HP14 AND HP21 SERIES UNITS
IV-WIRING

AND PACKING LIST

Package I of I contains:
1-

Blower control relay (K117)

Bag assembly containing:
4-wires
4-wire ties
6-wire nuts

USED

NOTE-Figure I shows new Lennox thermostat nomenclature versus the old nomenclature. See figures 2, 3,4, 6
and 8 for HS11 and HS14 applications and figures 5, 7
and 9 for HP11, HP14 and HP21 applications.
LENNOX
OLD STYLE
NOMENCLATURE

Wires with pigtail leads and 1/4" quick connect terminals
are supplied with kit to provide connections from kil relay
to unit.

LENNOX
NEW eTYLE
NOME :NCLATURE

................

AMBIENT

•

SEN_OR

.................

(T)]
"(,L) ]

,SER_V'ICELIGHT

II-APPUCATION
REVERSING

Indoor blower control kit (LB-58773DA) is used to provide the option of varying indoor blower speeds during
compressor operation, This option is especially important in locations with high humidity. The indoor blower
speed control kit provides use of a lower indoor speed
dining continuous fen or low speed compressor operatlon, Increasing the effectiveness of humidity removal. A
I'dgherIndoor blower speed which satisfies cfm requiremerits can then be selected for use during high speed
compressor operation.

(_.

STAGE

...........

S0R - yEI_LQW.

COMPRESSOR

EMERGENCY
COMMON

2NO

STAGE

AUX.

- BLUE

HE&T ..............

BLACK

HEAT

_,1")
I
LY_I
,(E'_
I
_ ° .
_C)l

- BROWN

- RED

®
®

Ill-INSTALLATION

STSTAGEAUX.HEAT- WH!TE. W_j
INDOOR

BLOWER

- GREEN

-_'G_ ]

UI_ lrHIB DIAGRAM WHEN TRYING TO MATCH NEW BTYLE TB_T&T
NOMEII_:LATURE
TO OLD II"IP/UE THEIqMOITAT
NO44 EIICLATURE,

1- Turn off electrical power at indoor unit disconnect
switch.
2- Use 7/8" knockout to make a mounting hole in the
control box near the existing blower motor relay.
3- Remove nut horn beck of relay, insert wires through
knockout and tighten mounting nuts so tYmt relay
stays securely in place.
4- Continue with wiring section.

I_T_ST_AG_E_CO_M_ES
2ND

VALVE - ORANGE

FIGURE 1
A-Low Voltage Wiring
HS11/HS14 Units-Use wire nut to attach one blue relay
coil lead to black wire runningfrom Y2 of room thermostat
to Y2 of condensing unit. Second blue relay coil lead
should be pigtailed into yellow common lead from T terminal on condensing unit. See figures 2, 3, 4, 6 and 8.

Page 1

HP11/HP14/HP21 Units-Use wire nut to splice blue relay
coil leads intowire from terminal M2 of room thermostat.

D-High Voltage Whlng-'lyplcal
Match-up

See figures 5, 7 and 9.

Electric Heat

WI_
for units matched with
CB/CBS18-21 through -51-3P and
CB/CBH19-1P/-2P
blower coU units

B-High Voltage Wirlng-ll_/pical Gas Unit Match-up
1- Run wire fl'omcommon terminal of kit control to door
interlock switch of unit.
2- Run wire from normally closed terminal of kit relay to
teffnlnal 1 of existing indoor biower relay.
3- Use ctm tables In Lennox engineering handbook to
select a speed tap connection for wire from terminal
3 of existing indoor blower relay. This will be the indoor blower speed for continuous indoor fan operation end blower speed d_ing low speed compressor
operation.
NOTE-For most effective humidity control, lowest p_sslble indoor blower speed should be selected for low
speed compressor operation.
4- Use cfrn tables in Lennox engineering handbook to
select a speed tap connection for wire from normally
open contact of kit relay. This will be the Indoor blower speed during high speed compressor operation.
5- Replace access panels and restore electrical power
to unit.

1- Disconnect wires from terminal 4 and connect therrn
to te_Tninal3 of the existing Indoor blower relay.
2- Disconnect blower motor lead wire from terminal 2
and connect it to terminal 5 of the existing Indoor
blower relay.
3- Disconnect wire from terminal I and connect itto terminal 2 of the existing Indoor blower relay.
4- Connect red wire from common terminal of kit control
relay to terminal 1 of existing indoor blower relay.
5- Connect yellow wire from normally closed terminal
of kit relay to terminal 4 of existing indoor blower
relay.
6- Use CFM table in the Lennox engineering handbook
to select a speed and blower motor lead wire to connect to terminal 6 of the existing indoor blower relay.
This will be the Indoor blower speed for continuous
indoor fan operation and blower speed during low
speed compressor operation.
NOTE-For most effective humidity control, lowest possible indoor blower speed should be selected for low
speed compressor operation,

1- Disconnect black blower motor lead wire from terminal "A"of BCC2 board.

7- Use CFM tables in Lennox Engineering Handbook to
select a speed tap connection for black wire from the
normally open contact of the kit relay. This will be the
indoor blower speed during hLghspeed compressor
operation.
8- Replace access panels and restore electrical power
to unit.

2- Runred wire from common terminal of kit relay to terminal",_' of BCC2 control.

W',rlng for units matched with
CB/CBS18-65-3P
blower coils units

3- Cut the quick connect terminal from black blower
motor lead wire, strip it 5/8" and connect it to the
black wire from the normally open terminal of kit relay
using a wire nut. This will be the indoor blower speed
dudng high speed compressor operation.

1- Remove and discard the red wire from the common
terminal of the kit relay,
2- Disconnect wires from terminal 3 of existing indoor
blower relay and connect them to the common terminal of the kit relay.

4- Connect yellow wire (provided) from normally closed
terminal of kit relay to terminal 4, 5, or 6 of jack J43
on blower motor. This will be in the indoor blower
speed for low speed compressor operation. Continuous blower speed may be at a different speed. See
figure 3.

3- Connect yellow wire form normally closed terminal
of kit relay to terminal 3 of the existing indoor blower
relay.
4- Use CFM table in the Lennox engineering handbook
to select a speed and blower motor lead wire to connect to terminal 6 of the existing indoor blower relay.
This will be the indoor blower speed for continuous
Indoor fan operation and blower speed during low
speed compressor operalion.
NOTE-For most effective humidity control, lowest possible indoor blower speed should be selected for low
speed compressor operation.

C-High Voltage Wiring - "P/pical Gas Unit with
BCC2 Blower Control

NOTE-For most effective humidity control, lowest pos.
slble Indoor blower speed should be selected for low
speed compressor operation.
5- Replace access panels and restore electrical power
to unit.

Page 2

5- UseCFMtablesInLennoxengineering
handbook
to

operation.

select a speed tap connection for black wire from the
normally open contact of the kit relay. This will be the
Indoor blower speed during high speed compressor

6- Replace access panels and restore electrical power
to unit.

HS11 OR HS14 CONDENSING UNIT WITH GAS UNIT
BLOWER CONTROL KIT APPLICATION
SEE ¢m T/UBL£S IN _INEF.,RING
HANDECICIK AND SELECT
PfllATE 81J3WF_ SPEED FOR CONTINIJOJS INDOOR FAN OPERA_X_N
AND BLOWER SPEED OOMPRE_
s_q CPERATR)N,

Lt----_
,,-I'_

"_--nmuOwlm

_t"1"_

" --'RElaY

_1(_

__I

SEE ¢fnl TABLES IN ENGINEERING

ROOM

HANOBOOKAND SELECTAPPROPRIATEBLOWER SPEED FOR HIGH

THERMOSTAT

SP_ED COMPAESSOR
OPERA-

,-Y--h---_ _
l

_._..,_o_._w_
TERMINAL
NOMENCLATURE
AND

or,',",n-l:

,= <

c II

|II
i

RELAY

T I #o...ou..

m_NG

SPEED _

,-_

]

Ir-----_ I

Ii-T(_,

I_
.'_-":_
'
I_

N----@

ch_I

IL------"
"aI

_ I_,_umw T COUMO.I
-

FIGURE 2

Page 3

,_ _

HS11ORHS14CONDENSING
UNITWITHGASUNITWITHBCC2BLOWER
CONTROL
ANDBLOWER
CONTROL
KITAPPLICATION
24¥
j_

-L

SEt= cfrn TABLES IN ENGINEERING
AND SELECT APPROPRIA31E BLOWER SPEED FOFI CONTINUOUS INDOOR FAN OPERATION
BLOWER SPEED _
_,

_E _
T_S
IN E_INEERI_
HANDBOOK AND _CT
APPflO*
_
_R
_D
_
HIGH
SPEED
C(_PRESSGFI
OPERA11ON,
SEE FIGURE 1 FOil NEW VOLTAGE
TERMINAL NQ_II_NCLATURE
AND
WiRE COLDRS_
A

IF HEATING AND LOW SPEED ARE
TO BE THE SAME, CONNECT
JUMPER BETW1EEN $88-1
AND
AIS_H (AS SHOWN). REMOVE UNUSeD _
SPEED 'WIRE

II_E =CF_ T_RMINAL IS ON BCC2
ONLY_

ll='

c _ k('))

_LINE
"--_4

Page 4

24V

YOLT_
FI_.O
INSW_M=LB_
_LT
FIELD I_T_LL_D

H$11

HS14

CONDENSING
UNIT WiTH CB18/CBS18-21
THROUGH
AND BLOWER
CONTROL
KIT APPLICATION

cB(_)

r
I

..........
Y.....
I

UNITS

I
I $1

ROOM THERMO-_TAT

•-1-@ ®®@_

;

"---i-P-l-- ;.

-"
(3

-51-3P

I
/
/

_ tax cl

|
|

}

/
I

!
_

HAN{_)_ANDSELECTAPPROPfllATE
BLOWER SPEED FOR CoN'rlNLJ(Y.JSIN-

_
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LENNOX Controls And HVAC Accessories Manual L0806364

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