FORCE SCALE
SPAN SCALE
RING
"0"
LARGE
"0"
RING
SMALL
BELT SPAN
DEFLECTION =
64
BELT SPAN
B
G - GROUND
FIELD WIRING
N - NEUTRAL TERMINAL BLOCK
L3 - LINE3
L2 - LINE2
LI - LINE1
LEGEND
CONTROL WIRES-INTERCONNECTING
A
B
+5V
A
+5V GND
FUSED DISCONNECT SWITCH
OR CIRCUIT BREAKER
L1
G
L3
N
L2
PACKAGED UNIT
CONTROL PANEL
L1
L3
L2
N
GN
D
( USE 16 TO 22 AWG WIRE)
INDOOR THERMOSTAT
EC
B
HVT
B
NT
B
HVTB - HIGH VOLTAGE TERMINAL BLOCK
ECB - ELECTRONIC CONTROL BOARD
BELT TENSION TESTING PROCEDURE
BELT TENSION CHECKER
MEASURE THE BELT DEFLECTION FORCE
BELT TYPE
–
A
B
BELT CROSS SECTION
3 L
4 L
5 L
SMALL PULLEY PITCH DIA. (P.D.)
RANGE
1.25 – 1.75
2 – 2.25
2.5 – 3
2.1 – 2.8
3 – 3.5
3.7 – 5
3 – 4.2
4.5 – 5.2
MINIMUM
1/2
5/8
3/4
1-1/8
1-1/2
1-7/8
2
2-3/8
MAXIMUM
5/8
7/8
1-1/8
1-5/8
2-1/8
2-5/8
2-7/8
3-3/8
BELTS
DEFLECTION FORCE - LBS.
TYPICAL HIGH AND LOW VOLTAGE FIELD WIRING CONNECTIONS
18
