Benchmark RD 532i User Manual

6 720 611 447 GB (03.11)
Individual settings
31
7 Individual settings
7.1 Mechanical settings
7.1.1 Checking the size of the expansion vessel
Maximum pressure at maximum CH flow temperature is
2.5 bar. If the pressure is greater than this then fit an
extra expansion vessel. Refer to table 12.
System Capacity – BS7074:1
7.1.2 Setting the central heating flow tempera-
ture
The central heating flow temperature can be set to
between 35°C and 88°C.
Limited maximum setting for low-temperature
operation
The temperature control is factory limited to setting E,
giving a maximum flow temperature of 75°C.
Adjustment of the heating output to the calculated heat
demand is not required by the heating systems regula-
tions.
Removing the maximum setting limit
For heating systems which require higher flow tempera-
tures, the maximum setting limit can be removed.
B Lift off the yellow button on the temperature control
with a screwdriver.
Fig. 41
B Rotate yellow button through 180° and replace (dot
facing inwards).
The CH flow temperature is no longer limited.
7.2 Settings on the Bosch Heatronic
7.2.1 General description
The text display module provides a convenient means of
setting various appliance functions.
This description is limited to those functions necessary
for commissioning.
Displaying service functions
All service functions are displayed.
B Press any button to activate the main menu.
B Press or button until the arrow cursor is
pointing to Settings.
B Press the button.
B Press or button until the arrow cursor is
pointing to Service.
B Press the button.
B Press the button to select Display service
parameters.
Service function 0.0, Last fault is displayed.
B Press the or button to cycle through the
current settings.
B Press the button to exit the menu.
Expansion Vessel Pressure and System Capacity
Expansion Vessel litres 10
Expansion Vessel Charge
Pressure
bar 0.75
System
pressure and
capacity
1 bar litres 82
1.5 bar litres 46
Table 12
6 720 610 332-27.1O
Control setting CH flow temperature
1approx. 35°C
2approx. 43°C
3approx. 51°C
4approx. 59°C
5approx. 67°C
E approx. 75°C
max approx. 88°C
Table 13
Service function Code no.
see
page
Anti-cycle time 2.4 32
Max. CH flow temp. 2.5 32
Max. heating output 5.0 32
Constant hot water cycle-
time
6.8 32
Variable pump settings 7. 0 32
Table 14
i
For a detailed description, refer to Service
Booklet for the Engineer 7 181 465 347.

Benchmark RD 532i Specifications

General

Brand	Benchmark
Model	RD 532i
Category	Water Heater
Language	English