Frequently Asked Questions about the KMP-F

Q: I have to protect a heating system with an installed capacity of 716kW.
What size protection system should I employ?
A: A table of the maximum power of the various systems is found here. The table shows that if the heating system can obtain a cooling of 40°C, it may just be protected by KMP-F25-M2. For lesser cooling, down to ΔT=25°C, KMP-F40-M2 may be used; below this and down to ΔT=15°C KMP-F60-M2 should be used.
Q: The billing meter is from Kamstrup. Can it be used?
A: Some utilities permit use of the billing meter, but that does not necessarily mean it is fit for the purpose. If the utility has laid out the meter narrowly relative to the heat consumption it may be unsuitable for leakage protection. Finally, the energy calculator must be a MULTICAL®601, 602 or 801, and it must have a vacant module slot (601, 602) or a vacant KMP attachment (801). Further, the flow meter(s) must be ULTRAFLOW®54. If the heat meter is the older model MULTICAL®66, it may be employed if the utility will replace the calculator top with a MULTICAL®602.
Q: Is readout of consumption data from the Kamstrup calculator in a KMP-F system possible?
A: If the energy calculator is not a billing meter there will be a slot available for installing e.g. an M-bus or LON module, via which the meter may be read. DanTaet normally installs a KMP bottom module for readout of flow data to the DanTaet leakage protection system, leaving the module slot in the calculator top vacant.
In case the desired interface exists only as a bottom module, the DanTaet data interface may be moved to the calculator top, as the KMP data module is available as a top module also.
If further module slots are required you can order system KMP-FExx-M2, which employs MULTICAL®801.
Q: What if the calculator in question is a billing meter?
A: If the calculator is a billing meter it is likely equipped with a remote reading facility as a bottom module, and DanTaet will then employ the top module slot for its KMP interface. If the calculator is a MULTICAL®601 or MULTICAL®602 there will be room for no further modules.
In some cases, the utility may be persuaded to replace the calculator with a model MULTICAL®801, possibly against an additional fee to the consumer, whereby additional module space is obtained, partly because the calculator bottom is more spacious, partly because the KMP interface employed by DanTaet is an integral part of the MULTICAL®801.
Q: The billing meter has one flow meter attached. Which leakage protection system to use?
A: That depends on whether the billing meter is laid out narrowly against consumption. DanTaet therefore needs to know the annual heat consumption (MWh) of the property, the size of the billing meter and what type flow meter it employs (send us close-up photos of the calculator front panel and the flow meter type label).
If the utility does not permit use of the billing meter, or if the billing meter is narrowly laid out (determined by DanTaet), or if the existing flow meter is of type ULTRAFLOW®65S the leakage protection main type KMP-Fxx-M2 is prescribed.
Otherwise, the main type KMP-Fxx-M1 is prescribed.
Q: The billing meter has two flow meters attached. Which leakage protection to use?
A: Main type KMP-Fxx-M0. It will be advantageous to select a system with valve size corresponding to the pipe dimension - often the is a reduction around the billing meter so narrow a system with valves in this dimension will yield an excessive head loss. If e.g. the piping is 2", select system KMP-F15-M0 even though the billing meter is only e.g. 1" / Qp 6 m3/h.
This selection has no influence on system sensitivity, as this is determined basically by the attached calculator and its flow meters.
In the table on page two of the KMP-F data sheet, locate the desired valve dimension in the relevant column to the right, and read the system size (i.e. the number after letter F in the system designation) in the left column. If the billing meter is a MULTICAL®601 or MULTICAL®602 it must be verified that there is a vacant slot available for installing the required KMP interface.
Q: Are there any precautions to take with respect to the heating installation?
A: If the heating system serves air calorifiers with outdoor air intake, steps must be taken to prevent the leakage protection system from executing its daily OptiTight® tightness check when the outdoor temperature is below +5°C. You can either order the system with an outdoor temperature sensor and relay (9260034), or provide a digital control signal from BMS that switches state at +5°C outdoor temprature, and connect this to digital input J10 on the KMP-F.
Q: Are there any precautions to take during installation of the leakage protection system?
A: Yes - given that the leakage protection system compares flow data from two flow meters, it is extremely important that these are installed so they will both measure correctly and undisturbed, i.e. to avoid the formation of turbulence ahead of the meter entry ports. DanTaet has issued a set of guidelines for installing the KMP-F systems. These must be followed to achieve a satisfactory result.
Finally, it is of paramount importance to thoroughly and properly vent the entire heating system after installing the KMP-F.