Type List – Accessories; Technology; Measuring Principle; Determination Of Heat Consumption - Siemens WFM407 series Manual

Type list – Accessories
Accessories
Spacer
Spacer
Spacer
Ball valve
Ball valve
Ball valve
Tee
Tee
Tee
Threaded joints
Threaded joints
Parameterisation and
diagnosis tool
Order

Technology

Measuring principle

Determination of heat
consumption
Saving of consump-
tion values
4/8
Building Technologies
HVAC Products
Description, scope of delivery
For installation length of 80 mm, external thread ¾"
For installation length of 110 mm, external thread ¾"
For installation length of 130 mm, external thread 1"
Internal thread ½", with sensor seat
Internal thread ¾", with sensor seat
Internal thread 1", with sensor seat
Internal thread ½", with immersion sleeve M10×1
Internal thread ¾", with immersion sleeve M10×1
Internal thread 1", with immersion sleeve M10×1
Profipress G-Adapter with SC-Contur, gunmetal, female thread, 15× ½"
Profipress G-Adapter with SC-Contur, gunmetal, female thread, 18× ¾"
PC-software tool (additional tool required: with USB-Tool set
WHZ3.USB or IrDA interface F12150-2018 on Com (RS232) port)
When ordering, specify the type reference according to the type overview. The stan-
dard electronic Siemeca
If a due date other than the 31 December is desired, the desired month should also be
entered in addition to the type reference (the last day of a month is always the due
date).
Order model for a heat meter with 110 mm installation length and 30 April as due date:
WFM407.B113, Due date: April
The meter operates according to the single-jet measuring principle. The water flows
against an impeller; its speed is scanned electronically and without a magnetic field.
The temperatures in the flow and return are measured with immersion sensors Pt1000
(platinum measuring elements).
The heat meter is equipped either for installing in the return or in the flow. Please select
the corresponding meter from the type list for the place of installation.
The flow is continuously measured in the calculator and at least once every minute the
flow and return temperature. A microprocessor in the calculator determines the differ-
ence in temperature and calculates the consumed quantity of heat based on the aver-
age flow and the heat coefficient.
The heat consumption values are totalled continuously. The current state is saved on
the next due date at 24.00 h.
The due date can be factory-programmed; the standard due date is entered as
31 December (compare «Order»)
When the annual consumption is saved, the heat meter simultaneously calculates a
control number. After special parameterisation with ACT20 service software the check-
sum is readable. Self-readers must inform the utility company/property management of
this control number and the due date value that has been read out so that they can
check that the display has been read correctly.
The due date value remains saved for one year.
Electronic Heat Meter
TM
heat meter has an IrDA interface.
Type Ref.
WFZ.R80
WFZ.R110
WFZ.R130
WFZ.K15
WFZ.K18
WFZ.K22
WFZ.T16
WFZ.T19
WFZ.T22
WFZ.P2
WFZ.P2-1
ACT20
CE1N5331en
03.11.2005