Lennox CB26UH Series Installation Instructions Manual page 10

CB2
LIBI _ _ _/ ]2BLK
I HI--, ,2 B LK
___c_ I '
220
208/240
VOLTAGE
._E-
÷ CB}
12 BLK
--_BLK L
z_ z z
DIAGRAM- ELECTRIC HEAT
WIRING DIAGRAM- NO HEAT_
/_ WIRE
L ANUTS
ISAMPJ" LROR/_
SUPPLY<. 4 ....
i'_,,ii ;
VOLTAGq NEOT.
.....
TO GROUND LUG _ II
c_
208VI
120V
OR
220V
,,m-
SEQ2 2ND STAGE
5
4 ]2 BLK
r ]2 BLK
m rm
12 YEL
12 YEL
SEQI
12 BLK
'"'l 12 BLK
A -A ,
B _ LPJ
12 YEL
]2 YEL
BR : BLOWER RELAY
CAP : MOTOR CAPACITOR
÷ CB
POWER (FACTORY WIRED)
: CIRCUIT BREAKER (OPT.) POWER (FIELD WIRED)
IST STAGE
LSI
HEATERS USED
5 KW : HEI
75 & : HE] & HE2
I0 KW
15 KW : HE],HE2
& HE3
20 KW : HEI,HE2,
GND : GROUND LUG
HE : HEATER ELEMENT
LS : LIMIT SWITCH
MTR : BLOWER MOTOR
SEQ : SEQUENCER
÷TB : TERMINAL BLOCK(OPT.)
÷ ÷ TD : TIME DELAY(OPT,)
HE3 & HE4
CONTROL (FACTORY WIRED)
CONTROL
(FIELD WIRED)
CONTROL CIRCUIT WIRING TO BE 24 VOLT, N.E.C CLASS 2
TR : TRANSFORMER
3 4 5
6
• I_ ,N
i;
C
18RED
18BLU
oc
z
"_H
5
2
TD **
PLUG PIN AMP 350781-I
LOCATION 6-PIN CAP
_8 BLK
W2 _"
BLK
18 WHT wl _' WHT
18 BLU C _" BLU
18 GRN G _" GRN
18 RED
R _
RED
TO
> THERMOSTAT
MOTOR SPEED SELECTI DETERMINED BY MODEL
_2 I _ MED. SPEED NOT AV LABLE ON SOME MODELS
5 _ GND
Ft. 14BLUE_MEb;f"Z_4_BRN/WHT
,lJr,4 RED(LO)
I: !
31 _
.To
1. _4 a_._} I: I J : IBLK_.I _'" }BRN"I"
L" ,4YEL/co,, _ .j _._j-- CAP
Figure 121 Wiring Diagram
505059M 04/08
Page 10