Installation; Duct Flanges - Bosch LV Series Installation And Maintenance Manual

6 | Installation

Fouling due to iron bacteria can also pose
problems in some open loop installations. Iron
bacteria fouling can quickly degrade system
performance and plug heat exchangers.
Table 1: Water Quality
POTENTIAL
PROBLEM
SCALING
CORROSION
IRON FOULING
EROSION
* No "rotten egg" smell present at < 0.5 ppm H2S.
** Equivalent to 30 mesh strainer
INSTALLATION
The following are instructions to follow for
installation of all LV Series components.

Duct Flanges

LV heat pumps feature fold-out return and supply
air duct flanges. These fold-out flanges allow the
heat pumps to more easily fit through doorways
and other tight spaces, and also prevent damage in
shipping and handling.
8 733 905 683 (2013/04)
Water Characteristic
pH (Acidity/Alkalinity)
Hardness (CaCO3,
MgCO3)
Ryznar Stability Index
Langelier Saturation Index
Hydrogen Sulfide (H2S)
Sulfates
Chlorine
Chlorides
Carbon Dioxide
Ammonia
Ammonia Chloride
Ammonia Nitrate
Ammonia Hydroxide
Ammonia Sulfate
Dissolved Solids
Iron (Fe2+ Iron Bacteria
Potential)
Iron Oxide
Suspended Solids
Maximum Water Velocity
Subject to change without prior notice
Air in the water system will greatly accellerate the
fouling or corrosion process.
Acceptable Value
Copper
7-9
< 350 ppm
6.0 - 7.5
-0.5 - +0.5
< 0.5 ppm *
< 125 ppm
< 0.5 ppm
< 20 ppm
< 50 ppm
< 2 ppm
< 0.5 ppm
< 0.5 ppm
< 0.5 ppm
< 0.5 ppm
< 1,000 ppm
< 0.2 ppm
< 1 ppm
< 10 ppm, < 600 μm size **
6 ft/sec
It is recommended that all fold-out flanges be
folded-out once the heat pump is installed to
insure that return and supply air flow is not
obstructed. These flanges can be easily folded
using standard or duckbill pliers. Once folded out
these flanges can be used to support light
ductwork loads.
LV Heat PumpSeries
Cupro-Nickel
7-9
< 350 ppm
6.0 - 7.5
-0.5 - +0.5
10-50 ppm
< 125 ppm
< 0.5 ppm
< 150 ppm
< 50 ppm
< 2 ppm
< 0.5 ppm
< 0.5 ppm
< 0.5 ppm
< 0.5 ppm
< 1,500 ppm
< 0.2 ppm
< 1 ppm
< 10 ppm, < 600 μm size **
6 ft/sec
LV Heat Pump Series