Maintenance - Bosch QV Series Installation, Operation And Maintenance Manual

QV Series Heat Pumps

MAINTENANCE

DANGER: Before performing service or
maintenance operations on the system, turn
off the main power to the unit. Electrical
shock could cause personal injury or death.
1. Filter changes or cleaning are required at
regular intervals. The time period between
filter changes will depend upon type of
environment where the equipment is used. In a
single-family home that is not under
construction, changing or cleaning the filter
every 60 days is sufficient. In other
applications such as motels where daily
vacuuming produces a large amount of lint,
filter changes may need to be as frequent as
bi-weekly.
NOTICE: Equipment should never be used
during construction due to likelihood of wall
board dust accumulation in the air coil of
the equipment that permanently affects the
performance and may shorten the life of the
equipment.
2. An annual "checkup" by a trained and qualified
HVAC mechanic is required. Complete the
check-out sheet on page #60 when performing
the annual maintenance checkup. Record the
performance measurements of volts, amps,
and water temperature differences for both
heating and cooling. This data should be
compared to the information on the unit's data
plate and the data taken at the original startup
of the equipment.
3. Check the condensate drain annually by
cleaning and flushing to ensure proper
drainage.
QV Series Heat Pumps
4. Periodic lockouts almost always are caused by
air or water flow problems. The lockout
(shutdown) of the unit is a normal protective
measure in the design of the equipment. If
continual lockouts occur call a mechanic
immediately and have them check for:
• water flow problems
• water temperature problems
• air flow problems, or
• air temperature problems.
Use of the pressure and temperature charts for
the unit may be required to properly determine
the cause.
Subject to change without prior notice
Maintenance | 35
8733829041 (2021/07)