SUPREME FEM15-E230V1M-A, Руководство пользователя

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10
4 MAINTENANCE
From these readings, one can arrive at an approximate
calculation of the average airflow. To do that, the following
formula should be used:
WARNING
0.82 x amps. x volts
Liter/s= -------------------------
Electrical shock hazard.
Diff. temperature ˚C
Turn OFF power to the furnace before any disassembly or
servicing.
3.1 x amps. x volts
CFM = ------------------------
Failure to do so can result in death, bodily injury and/or
property damage.
Diff. temperature ˚F
3.4.1.
Supply Air Temperature Rise Test
Preventive maintenance is the best way to avoid unnecessary
expense and inconvenience. Have your heating system
inspected by a qualified service technician at regular intervals.
Do not attempt to repair the furnace or its controls. Call a
qualified service technician.
1) Operate the unit at maximum power for at least 10
minutes;
2) Measure the air temperature in the return air plenum;
3) Measuring the air temperature in the largest trunk
coming off the supply air plenum, just outside the
range of radiant heat from the heat exchanger. 0.3 m
(12”) from the plenum of the main take-off is usually
sufficient;
Before calling for repair service, check the following points:
1) Check fuses or the circuit breaker;
2) Check if the 15 A circuit breaker on the furnace is
disengaged;
4) The temperature rise is calculated by subtracting the
return air temperature from the supply air temperature.
3) Check the 5A fuse on the control board;
4) Set the thermostat higher than room temperature. If
the unit does not start up, cut the power and call la
qualified service technician.
If the temperature rise exceeds the temperature specified (±5˚F)
in Table 2, move the “AC/HP CFM ADJUST” black wire to high
(HI) position. If the excessive temperature rise cannot be
reduced by increasing fan speed, investigate for ductwork
obstructions or dirty and improper air filter.
When calling for service or ordering a replacement part, specify
the model and serial number of your appliance.
CAUTION
4.1 AIR FILTER
It is important to check the airflow and to ascertain that the unit
does not operate above the temperatures specified in the
Technical Specifications (Table 2). This is particularly important
if a cooling coil or a heat pump has been installed in the ducts.
The filter supplied with the unit is the disposable type and
should be replaced twice a year. The presence of animal hair,
dust, etc. may necessitate more frequent changes. Dirty filters
have an adverse effect on the performance of the central
heating system.
Hi-Limit thermal protectors should never need to engage during
the normal functioning of the appliance. They are strictly
designed to engage during the improper functioning of the
blower or when the filter was improperly maintained.
4.2 MOTOR LUBRICATION
Do not lubricate the blower motor, since it is permanently
lubricated.
3.4.2.
High limit verification
After operating the furnace for at least 15 minutes, restrict the
return air supply by blocking the filters or the return air register
and allow the furnace to shut off on High Limit. The electric
heaters must deactivate themselves one by one before the
warm air temperature exceeds 200˚F
Remove the obstruction and the elements should restart after a
few minutes.