Heat Pipe Technology BKP 250, Installation Operation & Maintenance

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7
During the wintertime when the space must be heated, the BKP
TM
s thermostat should be set 2 to 3
degrees above the main heating thermostat. This will use the BKP
TM
s normal dehumidifying operation
mode to provide additional heating to supplement the building's heating system while the BKP™ runs. It
will continue in this mode until its dehumidistat is satisfied.
NOTE: The BKP
TM
is not designed to cool when the outdoor temperature is below 50°F.
Refrigerant Migration will occur and the unit will shut down on low pressure.
7. MAINTENANCE
It is essential that the air filter on the inlet of the unit be kept clean in order to prevent excessive power
consumption and possible damage to the unit. Check the filters routinely to determine the frequency of
replacement.
Keep the outdoor remote condenser free of leaves and grass clippings, which may impede air, flow.
Check condensate drain regularly to ensure that the condensate is draining properly. If installed with an
auxiliary drain pan under the unit, check that it is dry.
It is recommended that the BKP
TM
be serviced annually by an authorized HPT certified technician to
provide maximum efficiency and insure long life equipment.
8. SERVICE DIAGNOSIS
The BKP
TM
is equipped with safety controls, which will shut down the unit if a problem occurs. The BKP
TM
will remain locked out until it is reset by either raising and then lowering the dehumidistat setting or by
turning the power to the BKP
TM
off and then back on.
If the unit locks out:
1. Check the air filter in the inlet of the unit. A dirty air filter will cause an increase in power consumption
and in the long run may cause damage to the unit.
2. Check the remote condenser. If the air is blocked or the hot air discharge is not free to dissipate, a
high discharge pressure will result and may cause damage to the BKP
TM
.
3. Check the power supply to the remote condenser. It will be on a separate breaker and if tripped will
cause the BKP
TM
to shut down.
4. Check refrigerant charge as described above.
To reset the BKP
TM
Reset the BKP
TM
by either raising and then lowering the dehumidistat setting or by turning the power to
the BKP
TM
off and then back on. Allow 5 minutes for the BKP
TM
to restart. If the unit locks out again after
restart, thoroughly check the operation of the BKP
TM
to determine the cause of the shutdown and correct
the problem. See troubleshooting section below.