Bryant Gas Fired Forced Air 394 - Manual (Page 6)

Belt Tension
Adjust tension on a V-belt so that the belt deflects
approximately 3/4 to 1 inch when the pressure from
one finger is applied midway between the blower and
motor pulleys. Adjust the tension by turning the motor
adjusting screw.
Filters
Some units are equipped with a permanent fiber filter
(recognizable by its distinct green color). To clean this
filter, run water through the fibers from the entering
air side. Do not spray this filter with water-soluble oil.
LINE VOLTAGE GRCUIT LOW VOLTAGE CIRCUIT
THERMOSTAT COtmECTlONS
-HEATING ONLY-
(necD WRms is iwtcwa k wanco uwa)
BLK.
REB 120V / , .
, - DIRECT DWVEC s O
4 SPEED ^ ^
/NO CAPACITOR used ')
VON DIRECT DRIVE/
FAV4
CONTROL
BLK.
BLK
BKOWN
UPPER UM\T /0\
COUMTERPUOWViJ/
PW-OT
safe W
SWITCH
Í (bMIT
OVl
prop )
9
BLK
VALVE ----------------
SLUE
T) WRITE
MAIN
LIMIT
BLK.
7*W
J
FAN CONTROL
GREEN
m
COOLIN« RELAY
WREN USED
DIRECT DRIVE TYPES
SLjSMB SE
BELT DRIVE TYPES
SB, SC $ sex
THERMOSTAT BN 34427035 ( no -
TERMINAL code ), also MODELS
883-P/N 344270030 OR 884-
P/N 34427D03I THERMOSTAT 4
SUB BASE.
i a 141
WHITE Y ®
StE CHAHT^ t
CIRCUIT MOD\F\E¿ BY COOÜ>A RELA^V (S.P.O.X)
STAV4DAR0 ON SMASE \t\.D''INSrT^ULBD
ON SL DRIVE.. ______________
©in i V i
write Y
SEE CHART
(RED)
BELT DWVE
ILL SB, SO ^
SOX lfeH.P.
BLK.
CIRCUIT MODIFIED BY COOLING
RELAY <;s.P,D.T.)'TlELO” INSTALLED ON
SB.se 4 V e H.P. sex DRIVES_________________
^ % H.R,(SCX), DRIVE FURVIACE
15 F^CTORY WIRED FOR 230V.
POWER. IF ONLY 120V, POWER
IS AVAILABLE, RED WHITE
WIRES MUST BE REVERSED
AT THE TRANSFORMER. SEE
\W1R\NG LABEL ON DUAL.
VOLTAGE MOTOR FOR
I Z O V . CONNE.CT\OV4.
note ; remove inter ­
nal JUMPER BETWEEN
"I W 4 J TERM\NALS.
W
J
4
G
X
Y ^
DIRECT DRIVS^
F n TYPE SL,SM4SE
BELT DRIVE
TYPE SB, SC 4 sex
ON-OFF FAN, MODEL S85
P/N 34427D33 THERMOSTAT
4 SUB-BASE OR THERMOSTAT
MODEL SaS P/ n 3442.7MS WITH SUB­
BASE P/N3442703i.
FACTORY SETTING CHART
UNIT
size :
DRIVE
S 5 s E SB sc sex
RED
TO
BLUE
TO*
RED
TO
BLUE
TO
RED
TO
SUiE
TO
RED
TO
REO
TO
RED
TO
.50
— —
4 I 4 I
— — —
80 — —
3 I 4 ( — — —
lOO 2 I — — 4 I I I I
I25 3 I — — 3 I I \ \
I37 2 I — — 2 I \ \ \
1G5 — ■ — — — 2 I — I I
\90 — — — — — — I I \
220 \ — \
li s I v J l 4Í
white Y 51
7 INSTALLED
230V.+
10 ^
FAN
eONTROl
RED
/
S.P.S.T, \
CDOLiwa X
RELAY WHITES
J ■' field n
9 :
BELT DRIVE
; sex ONLY
(V4H,P.)
*USE WHEN FACTORY REUCY KIT IS “FIELD" INSTALLED.
Figure 6 - Internal Wiring
39394D41