About The Appliance; Product Description; Scope Of Delivery; Determined Use - Buderus Logalux PW 500 Bedienungsanleitung

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 on site.
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:
• PW 500, 750/5 (W) (special version for heat pumps)
• P 500, 750, 1000/5 (W)
• P 500, 750, 1000/5 M (W)
Buffer cylinder with connections for temperature-dependent return
feed and connection for a booster heater:
• PR 500, 750, 1000/5 E (W)
Solar buffer cylinder with connections for temperature-dependent
return feed and connections for the solar system and booster heater:
• PNR 500, 750, 1000/5 E (W)
Heat pump buffer cylinder with connections for temperature-dependent
return feed and connections for the solar system and booster heater:
• PNRZ 750, 1000/5 E (W)
The PNRZ 750, 1000/5 E (W) 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 PR temperature-dependent return feed
H10/H12 PNR/PNRZ temperature-dependent return feed
VLs/RLs Solar system connections
E Connection for booster heater (accessory)

Table 6 Connections ( Fig. 1, page 47)
2.2

Scope of delivery

Buffer cylinder
• Steel storage cylinder
• Technical documentation
80 mm thermal insulation
• Flexible foam thermal insulation with foil jacket
• 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
PW/P/PR/PNR/PNRZ... – 6 720 806 553 (2014/07)
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
DHW plate heat exchanger solution.
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

Unit
Operating pressure bar
Heating water
Operating pressure bar
Solar heat exchanger
Operating temperature °C
Heating water
Operating temperature °C
Solar heat exchanger
Maximum recommended m
flow rate through connector
1 1/2"
Temperature-dependent m
feed flow rate:
3
Maximum 5 m /h, function
successfully tested up to:
Table 7 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 8 Information on the data plate
About the appliance
PW... PR... PNR...
P... M PNRZ...
P...
3 3 3
– – 10
95 95 95
– – 130
3
/h approx. 5 approx. 5 approx. 5
3
/h – 1.5 1.5
2
9