Lennox International Inc O23V-154, O23V5-140, O23V5-154, O23V-70, O23V4-120, O23V-105, O23V-120, O23V-90

Continuous Fan

When the thermostat is set for "Continuous Fan" operation and there is no demand for heating or cooling, the blower control will provide 50% of the COOL CFM selected.

G

HUM terminal which provides for connection of a humidis- tat. The JW1 jumper on the blower control board must be cut to activate the HUM terminal. The humidistat must be wired to open on humidity rise. When the dehumidification circuit is used, the variable speed motor will reduce the se- lected air flow rate by 18% when humidity levels are high.

An LED (D1) lights when the blower is operating in the de- humidification mode.

l

50%

G - Fan switch

ON

/

Humidification

&_

Terminals

are provided

on the A15

control board

for 120

CALL

g - Fan switch

OFF

OFF

volt output to operate a humidifier. The "HUM" terminal is

NOTE - With the proper thermostat and subbase, continu-

energized when there is a call for heat. See figure 18.

Electronic

Air Cleaner

ous blower operation is possible by closing the R to G cir-

cuit.

Terminals

are provided

on A15 control board for

120 volt

Dehumidification

output to an electronic air cleaner. The "EAC" terminal is

energized when there is a call for heat, cool, or continuous

The A54

blower control board

(see

figure 17) includes a

blower. See figure

18.

Table

6

Blower Performance {0 through 0.80 in. w.g. (0 through 200 Pa) Extemal Static Pressure Range}

"ADJUST"

"HEAT"

Jumper

Speed

Position

[kBtuh

heat input]

"COOL"

Jumper

Speed Position

Jumper

iiiiii'",_!_;!ji!i!!iiiiiiiiii!i_!i!_!i_ii_ii_ii_iii_i

Setting

HEAT

HEAT

HEAT

COOL

COOL

COOL

ADJUST

B B

D iA

h ^

B

C

(+)

NORM

(-)

(+)

NORM

(-)

(+)

NORM

(-)

cfm	L/s	cfm	L/s	cfm		L/s	cfm	L/s	cfm	L/s	cfm	L/s	cfm	L/s
			Model		O23V2/3-70/90			Units
		[-90]			[-70]
;_/A_!A			Same	as NORM			1380	650	1150	545	920	435	69O	325
		1000	470	750		355	1200	565	1000	47O	800	380	6OO	285
			Same	as NORM			1020	480	850	4OO	680	320	510	24O
			Model		O23V3/4-105/120			Units
		[-120]			[-105]
			Sameas NORM				1610	760	1380	65O	1150	540	92O	435
		1300	615	1200		565	1400	660	1200	565	1000	470	8OO	380
			Sameas NORM				1190	560	1020	48O	850	400	68O	320
			Model		O23V5-140/154			Units
[-154]					[-140]
Same	as			Sameas			2300	1085	2070	975	1840	870	1380	65O
NORM					NORM
1730	816			1400		660	2000	945	1800	85O	1600	755	1200	565
Same	as	!A:		Same as			1700	800	1530	72O	1360	640	1020	48O
..............................................................NORM					NORM

NOTE - Continuous Fan air volume is 50% of COOL speed.

Page 15

O23V SERIES