Cooling Tower/Boiler Systems; Geothermal Closed Loop Systems - Bosch LV009 Installation And Maintenance Manual

LV Heat Pump Series

Cooling Tower/Boiler Systems

These systems typically use a common loop temperature
°
maintained at 50 F to 100
and heating performance.
In the cooling mode, heat is rejected from the unit into
the water loop. A cooling tower provides cooling to the
loop water thus maintaining a constant supply
temperature to the unit. When utilizing open cooling
towers, chemical water treatment is mandatory to
ensure the water is free from corrosive elements. A
secondary heat exchanger (plate frame) between the
unit and the open cooling tower may also be used. It is
imperative that all air be eliminated from the closed loop
side of the heat exchanger to ensure against fouling. In
the heating mode, heat is absorbed from the water loop.
A boiler can be utilized to maintain the loop at the
desired temperature.
Consult the specification sheets for piping sizes.
NOTICE: Water piping exposed to extreme
low ambient temperatures is subject to
freezing.
Teflon tape thread sealant should be used against
leaks and possible heat exchanger fouling.(Teflon is
a registered trademark of DuPont).
Consult the specifications sheets for piping sizes
Do not overtighten the connections. Flexible hoses
should be used between the unit and the rigid system to
avoid possible vibration.
Ball valves should be installed in the supply and return
lines for unit isolation and unit water flow balancing.
Figure # 16 Cooling/Boiler Application
1. Line Voltage Disconnect
2. Low Voltage Control Connection
3. P/T Plugs (Optional)
4. Hose Kits
5. Ball Valves
6. Supply and Return Lines of the central system
7. Flex Duct Connection
8. Hanging Brackets Assembly
9. Threaded Rod
LV Heat Pump Series
°
F. To assure adequate cooling
Application Considerations | 21

Geothermal Closed Loop Systems

Operation of an LV Series unit on a closed loop
application requires the extended range option
NOTICE: Closed loop and pond applications
require specialized design knowledge. No
attempt at these installations should be
made unless the dealer has received
specialized training.
Utilizing the Ground loop Pumping Package (GLP),
makes the installation easy. Anti-freeze solutions must
be utilized when low loop temperatures are expected to
occur.
Refer to Ground Loop installation manuals for more
specific instructions.
Figure # 17 Earth Coupled Application
1. Line voltage disconnect unit
2. Flex Duct Connection
3. Low voltage Control Connection
4. Line Voltage Connection
5. P/T Ports
6. Vibration Pad
7. Condensate Drain
8. Ground Loop Connection Kit
9. Ground Loop Pumping Package
10. Polyethylene With Insulation
8 733 905 683 (2016/09)