11
63-2197—2
Fig. 11—Wiring for replacement of Ranco LA2-1000/2000 Series Actuators with Honeywell 24V M7164A,G.
M7161, M7164, M7184
OPERATION AND REPLACEMENT • CHECKOUT
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION AND DIS-
CONNECT MEANS AS REQUIRED.
SOLID LINES ( ) ARE EXISTING CONNECTIONS. DASHED LINES
( ) ARE NEW CONNECTIONS. "X'S" INDICATE REMOVAL OF
EXISTING WIRING.
CONNECTIONS SHOWN ARE FOR 24V MOTORS. MODELS WITH
L1, L2 TERMINALS REQUIRE NEW 120V POWER SUPPLY WIRING
M3006
LA1-1000/2000
SERIES
ACTUATORS
(ZONE)
COMD(+)
REF( )
24 VAC
24 VAC
L1
(HOT)
L2
1
L1
(HOT)
L2
1
3
R
C
T1
T2
TRANSFORMER
EA3
TR-3 ZONE
THERMOSTAT
ZONE
DISCHARGE
SENSOR
TR1
TRANSFORMER
TO OTHER
ZONE
TR3/TR4
MOTOR
2
1
1
6
9
10
3
1 2 3 4 5 6 HI L0 7 8 9 10 11 12
2
5
4
1
3
C
3
H
3
C
2
H
2
H
1
C
1
24 VAC
24VDC
+
TO OTHER
ZONE
TR3/TR4
ZONE
ZONE
2
3
4
5
6
12
11
10
9
8
7
ZONES
LOAD ANALYZER MODULE
L1
L 2
F
Checkout
MOTOR OPERATION CHECK
M7161A,B, M7164A,B and M7184A
Jumper terminals C and F; motor should drive to the fully
open (clockwise
) position as viewed from the power
end. Remove jumper. Remove the lead from terminal C or
R; motor should drive to the closed (fully counterclock-
wise
) position.
M7161G and M7164G
Jumper terminals C and F; motor should drive full closed
(fully counterclockwise
position as viewed from the
power end). Remove jumper. Remove the lead from termi-
nal C or R; motor should drive to the open (fully clock-
wise
) position.
After installation and linkage adjustment, operate the
motor through the thermostat or panel. Make sure that:
• The motor operates the damper or valve properly.
• The motor responds properly as input voltage is varied.
• The auxiliary switch, if used, operates at the desired
point of motor rotation.
Inspect the motor, linkage, and valve or damper to see that
all mechanical connections are correct and secure. In damper
installations, the pushrod should not extend more than a few
inches past the ball joints. Check to see that there is adequate
clearance for the linkage to move through its stroke without
binding or striking other objects. See System Instructions for
additional checkout procedures.
