Evaporator Coil Metering Devices; Pre-Start And Startup - Carrier 50KC*A/B06 Series Installation Instructions Manual

BELT DEFLECTION FORCE (LBS)
BELT SMALLEST
UNNOTCHED
CROSS SHEAVE
SECTION DIAMETER
USED
3.0-3.6
A, AX 3.8-4.8
5.0-7.0
3.4-4.2
B, BX 4.4-5.6
5.8-8.6
Table 1
BELT CONDITION TENSION FORCE IN BELT (LBS)
New
Used
Table 2
Fig. 53 — V-Belt Force Label
BELT TENSION METHOD
Requires belt tension gauge that measures tension in belt in
units of lbs force.
NOTCHED BELTS
BELTS
NEW USED NEW
3.7 5.5 4.1
4.5 6.8 5.0
5.4 8.0 5.7
— — 4.9
5.3 7.9 7.1 10.5
6.3 9.4 8.5 12.6
100
80
MOUNTING
BOLTS (4)
6.1
7.4
8.4 Fig. 54 — Belt Drive Motor Mounting
7.2

Evaporator Coil Metering Devices

The metering devices are multiple fixed-bore devices (Acu-
trol™) swedged into the horizontal outlet tubes from the liq-
uid header, located at the entrance to each evaporator coil cir-
cuit path. See Fig. 55-56 for units with standard metering de-
vices and Fig. 57 for units with Humidi-MiZer
devices. These are non-adjustable. Service requires replacing
the entire liquid header assembly. For more information, see
the 50KC04-06 Service and Maintenance Instructions.
Pre-Start and Start-Up
This completes the mechanical installation of the unit. Refer
to the unit's Service Manual for detailed Pre-Start and Start-
Up instructions. Download the latest versions from HVAC
Partners (www.hvacpartners.com).
40
BLOWER PULLEY
V-BELT
MOTOR
PULLEY
MOTOR
MOTOR MOUNTING
PLATE
® metering