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2 Pre-installation
1. The installation must conform to the instructions in this
manual and all applicable local, state, provincial, and
national codes, laws, regulations, and ordinances.
Installations in Canada must conform to B149.2
Installation Code.
2. Be certain the domestic water supply to the tank has
physical and chemical characteristics that fall within the
limits shown in Table 2A. Where questions exist as to
the composition of the water on the job, a qualifi ed
water treatment expert should be consulted.
CAUTION
Water with characteristics outside the limits shown in
Table 2A may severely shorten the life of the tank due
to corrosion. Damage to tanks in such cases is not
covered under warranty.
3. Read and understand all installation requirements in
this manual.
Water Chemistry Requirements
Water used in the tank must have characteristics falling
within the following limits:
Characteristic
Ph
Chloride (PPM)
Indirect Fired Water Heaters Installation and Operating Manual
Table 2A
Min.
Max.
6.0
8.0
--
80
Installation & Operating Manual
Locating the Tank
1. Choose a location for your water heater centralized to
the piping system. You must also locate the SST water
heater where it will not be exposed to freezing
temperatures. Additionally, you will need to place the
water heater so that the controls, drain, and inlet/
outlets are easily accessible. This appliance must not be
installed outdoors, as it is certifi ed as an indoor
appliance, and must also be kept vertical on a level
surface.
2. Keep distance between boiler and water heater to a
minimum to:
a. reduce piping heat loss
b. provide minimal friction loss
3. Figure 1-1 on page 6 shows the weights of all the tanks
fi lled with water. Make sure that the location chosen for
the tank is capable of supporting it.
CAUTION
This appliance must be placed where leakage from
the temperature and pressure (T&P) relief valve,
leakage from the related piping, or leakage from the
tank or connections, will not result in damage to the
surrounding areas, or to the lower floors of the
building. A water heater should always be located in
an area with a floor drain or installed in a drain pan
suitable for water heaters. The manufacturer shall not
be held liable for any such water damage. Damage
caused by the failure to properly install a drain pan or
in an area with a drain is not the responsibility of the
manufacturer or Bosch Thermotechnology Corp.
(BTC).
4. The tank may be located some distance from the boiler
provided the pump is designed to provide the fl ow
called for in Table 3B - Pressure Drop Values, through
the coil. Also, the further the tank is from the boiler, the
longer the response of the boiler will be to a call from
the tank zone. Insulate piping between the boiler and
the tank.
WARNING
Failure to properly support the tank could result in
property damage or personal injury.
Recommended Clearances
The installation location must provide adequate clearances
for servicing and proper operation of the water heater. A
12 inch vertical clearance is recommended from the top of
the water heater. A zero clearance is allowed for the sides
of the water heater. However, boiler and servicing
clearances must be fi gured when locating the water
heater.
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