19
PRIOR TO START-UP
1. Check all electrical connections for tightness.
2. Check air filter has been installed in return air box or
filter box.
3. Remove all winter supply shut-offs and store them in
a safe place.
SYSTEM START-UP & ADJUSTMENTS
1. Place thermostat fan switch in ON position and cooling
indicator in OFF position. In about 30 seconds, indoor
unit blower will start.
2. Check blower operation for excess noise or vibration.
3. Check entire distribution system for leakage and apply
additional tape where necessary.
4. Check that system static pressure is within acceptable
limits (minimum 1.0" W.C. - maximum 1.5" W.C.). Static
readings must be taken in the plenum a minimum of 18"
(or after the tee on WCSP-4860D systems) from the fan
coil unit, plenum tees or elbows but before any supply
run.
a. If greater than 1.5" W.C. add additional supply runs.
b. If less than 1.0" W.C. check the return air filter is
clean and return duct is not collapsed or kinked.
c. Check supply air plenum for leaks.
d. If more supply runs than recommended are used,
check that balancing orifices are in place.
5. Check that blower motor amp draw compares with
fan coil unit rating plate. Amp draw shown on plate is the
FLA of motor (not the actual running amps) and will vary
with the pressure and voltage.
6. Place the thermostat cooling indicator in COOL
position, which will start the outdoor unit. Let the system
run at least 30 minutes to stabilize operating conditions.
7. For outdoor unit star t-up, follow manufacturer’s
instructions.
8. Check that temperature drop across evaporator coil
in the indoor unit is between 20°F to 28°F.
9. Check the chiller or boiler for proper operation
according to the manufaturer’s instructions.
CONDITION
VERIFICATION
SOLUTION
A.
Lack of cooling
1. Chilled water loop temperature
1. Adjust water temperature in chilled water loop
B.
Lack of heating
1. Hot water loop temperature
1. Adjust water temperature in hot water loop
C.
Blows cold air on
1. Fan is controlled by a thermostat
1. Install aquastat
initial start-up
2. Fan is controlled by an aquastat
2. Adjust setting to allow water loop to reach
proper temperature
D.
Condensate does
1. Unit is not level
1. Make sure unit is level
not drain properly
2. Unit is not trapped
2. Install trap supplied with unit
3. Drain line is blocked
3. Clear blockage
E.
Unit sweats inside
1. Insulated panels not secured
1. Secure and seal all insulated panels to prevent
cabinet
air infiltration
COMMON START-UP CONDITIONS
Содержание WCSP-2430D
Страница 10: ...10 SUPPLY AIR PANEL REMOVED FOR CLAIRITY SPL 0061 A FIGURE 2 9A SPL 0062 A FIGURE 2 9B...
Страница 13: ...13 FIGURE 2 13 MODEL WCSP D WIRING SCHEMATIC...
Страница 23: ...23 NOTES...
