About The Appliance; Product Description; Scope Of Delivery; Determined Use - Bosch BST 500 Pufferspeicher, Installations- Und Wartungsanleitung Für Den Fachmann

14 | About the appliance

2 About the appliance
2.1

Product description

The buffer cylinder and thermal insulation are supplied in two units. The
thermal insulation and temperature sensors have to be installed. Each
cylinder type is available with 80 mm and 120 mm thermal insulation.
These installation and maintenance instructions apply to the following
types:
Buffer cylinder:
• BST 750/5 PN6 Ehp for increased operating pressure
• BST 500, 750, 1000/5 Ehp (special variant for heat pumps)
• BST 500, 750, 1000-5
• BST 500, 750, 1000-5 M
Buffer cylinder with connections for temperature-dependent return
feed and connection for a booster heater:
• BST 500, 750, 1000-5 SrE
Solar buffer cylinder with connections for temperature-dependent
return feed and connections for the solar system and booster heater:
• BST 500, 750, 1000-5 SrSE
Heat pump buffer cylinder with connections for temperature-dependent
return feed and connections for the solar system and booster heater:
• BST 750, 1000-5 SrSE Ehp
The BST 750, 1000-5 SrSE Ehp also has two laminated shims. The
laminated shims make it possible to divide the interior of the cylinder
into standby, heating and solar areas. Additionally, the flow feed lance
ensures the heat pump inflow remains stable.
H9/H11 Temperature-dependent return feed BST...SrE
H10/H12 Temperature-dependent return feed
BST...SrSE / BST...SrSE EhP
VLs/RLs Solar system connections
E Connection for booster heater (accessory)

Table 2 Connections ( Fig. 1, page 47)
2.2

Scope of Delivery

Buffer cylinder
• Steel storage cylinder
• Technical documentation
80 mm thermal insulation
• Thermal insulation made of polyester non-woven fabric with a
film covering
• Thermal insulation for cover
• Cylinder cover
120 mm thermal insulation
• Polyester fleece thermal insulation with PS casing, 2 parts
• Thermal insulation for cover
• Thermal insulation for base
• Cylinder cover
• Locking bracket
• Cutting compass for creating a recess in order to install a booster
heater; plug for thermal insulation
6 720 806 571 (2015/01)
2.3

Determined use

These buffer cylinders may only be filled with heating water and used in
sealed heating systems.
The buffer cylinders can be used for indirect potable water heating via a
freshwater station.
Only fill solar heat exchangers with propylene glycol/water mixtures
(heat transfer medium L or LS). The use of any other heat transfer
medium is not permitted.
2.4

Technical data

• Technical data ( Fig. 1, page 47 and Fig. 2, page 48).
• Pressure drop diagram for solar heat exchanger ( Fig. 7, page 50).
2.4.1

Permissible maximum values

BST...EhP
BST...
Unit BST...M
Operating pressure bar
Heating water
Operating pressure bar
Solar heat
exchanger
Operating °C 95
temperature
Heating water
Operating °C
temperature
Solar heat
exchanger
3
Maximum m /h approx. 5
recommended flow
rate through
connector 1 1/2"
3
Temperature- m /h
dependent feed
flow rate:
3
Maximum 5 m /h,
function success-
fully tested up to:
Table 3 Permissible maximum values
2.4.2

Data plate

The data plate is located on the left, next to the connections
( Fig. 6, [2], page 50).
The data plate contains the following information:
Position Description
1 Model designation
2 Serial number
3 Actual capacity
6 Year of manufacture
9 Maximum flow temperature, heat source
10 Maximum flow temperature, solar
17 Maximum operating pressure, heat source side
18 Maximum operating pressure, solar side
Table 4 Information on the data plate
BST...SrSE
BST...SrSE BST...EhP
BST...SrE EhP
3 3 3
– – 10
95 95
– – 130
approx. 5 approx. 5 approx. 5
– 1.5 1.5
BST 500, 750, 1000 ...
PN6
6
–
95
–
–