QALCOMET HEAT 1 User manual

AXIS INDUSTRIES
HEAT METER CALCULATOR
QALCOMET HEAT 1
TECHNICAL DESCRIPTION
USER MANUAL
PEQMH1V03
Kulautuvos g. 45a,
LT47190 Kaunas,
Lithuania
tel. [phone];
fax. [phone].
[email protected]
www.axis.lt

Heat meter calculator QALCOMET HEAT 1 PEQMH1V01
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CONTENTS
Safety information.................................................................................. 3
EC declaration of conformity................................................................ 3
1. Application field.................................................................................... 4
2. Technical data…………………………………………………. 9
3. Accessories and sub-assemblies of heat meter..............………...….... 15
4. Operating principle.....................................………........................….. 15
5. Marking and sealing....................……….....................................….... 17
6. Safety requirements..............................................................………… 17
7. Installation........................................................................………........ 17
8. Operation..............................................................................………… 26
9. Reverification..................................................................…………...... 37
10. Transportation and storage…………………………………………... 37
11. Warranty......................................................…………….................... 37
12. Acceptance certificate…………………………………………….…..38
Annex A Displaying and configuration data ................................ 39
Annex B Mounting diagrams.................……………..… ………... 43
Annex C Numbering of terminals............................................... ….. 48
Annex D Outline and mounting dimensions.....………………......... 49
For EU Customers only - WEEE Marking.
Marking of electrical and electronic equipment in accordance with Article 11 (2) of
Directive 2002/96/EC
This symbol on the product indicates that it will not be treated as household waste. It must
be handed over to the applicable take-back scheme for the recycling of electrical and
electronic equipment. For more detailed information about the recycling of this product,
please contact your local municipal office.

Heat meter calculator QALCOMET HEAT 1 PEQMH1V01
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SAFETY INFORMATION
Warning!
Switch off mains power supply before changing, repairing, connecting or disconnecting
system parts! Power switch has to be installed close to the calculator.
The heat meter calculator QALCOMET HEAT 1 is made and inspected in compliance with
EN61010-1.
There are no life dangerous factors, when calculation unit is powered from 3,6 V lithium battery.
The lithium batteries must be properly returned.
If calculation unit is powered from mains power supply, it contains dangerous ~230 V electrical
current. It is necessary to follow general safety requirements during installation and maintenance
process.
The electrical connections must be made in compliance with the relevant standard while
observing local safety regulations.
Only qualified technical personnel may install and maintain heat meters (certificates for electrical
installation work with equipment up to 1000 V are required). Personnel must be familiar with
appropriate technical documentation and general safety instructions. To ensure safe operation, the
user must observe the notes and warnings contained in this instruction.
Device complies with safety class II. Protective grounding is not required, because housing is
made from plastics, and conductive parts are not exposed to the surface.
To protect power circuits from current overrun, 1A fuse, marked “F1”, is mounted on the bottom
side of power supply module. Remove power supply module to replace the fuse.
If relay output current exceeds 2 A, it may damage output circuits. It is recommended to use
additional protection circuits to protect relay outputs from damage.
Operation safety requires reliable insolation of electrical circuits, stable mounting of calculating
unit and proper grounding of all system components.
Safety requirements for flow, temperature and pressure sensors are provided in appropriate
technical documentation.
EC DECLARACION OF CONFORMITY
AB „Axis Industries“ herewith declares, that this product complies with the relevant requirements
of the following directives:
- 2004/22/EC
Measuring instruments Directive
- 2004/108/EC
EMC Directive
- 2006/95/EC
Low voltage Directive

Heat meter calculator QALCOMET HEAT 1 PEQMH1V01
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1. APPLICATION FIELD
QALCOMET HEAT 1 is designed for metering and monitoring of heating and cooling energy in
closed or open heating/cooling systems, installed in dwelling houses, office buildings or energy plants.
The calculator QALCOMET HEAT 1 is a sub-assembly of a heat meter, together with standard
flow sensors (based on ultrasonic, electromagnetic or mechanical measurement principle with standard
pulse output), temperature and pressure sensors.
QALCOMET HEAT 1 measures and calculates supplied flow parameters, displays measurement
data on the display, records and stores data in the internal archive.
Heat meter calculator QALCOMET HEAT 1 corresponds to essential requirements of the
Technical Regulation for Measuring Instruments, dated 30 March 2006 (transposing in the NB’s country
law Directive 2004/22/EC of 31 March 2004 on measuring instruments):
- Annex I Essential requirements
- Annex MI-004 Heat meter ,
QALCOMET HEAT 1 complies with the European standard LST EN 1434 “Heat meters”.
QALCOMET HEAT 1 fulfils “C” class environment protection requirements according to LST
EN1434-1:2007
Ambient temperature at +5 oC to +55 oC (non-condensing, indoor installation),
Mechanical environment class: M1 ,
Electromagnetic environment class: E2.
The calculator can serve two independent heating systems simultaneously:
-up to 5 temperature measurement channels,
-up to 5 flow measurement channels,
-up to 2 pressure measurement channels.
The user may select one of seven possible installation diagrams (measuring circuits) , according to
the application type:
Application type
Conditional
type
reference
Selection possibility
For the
first
heating
system
For the
second
heating
system
For closed heating systems. Flow sensor on supply pipe
U1*
+*
+
For closed heating systems. Flow sensor on return pipe
U2*
+*
+
For closed heating systems.
Flow sensor installed in heating circuit
U3*
+*
-
For open heating systems.
Flow sensors on supply and return pipes
A1
+
-
For open heating systems and measurement of supplied
heating energy. Flow sensors on replenishment and return
pipes
A2
+
-
For single-pipe hot water supply systems
A3*
+*
-
For open heating systems and measurement of supplied heating
energy. Flow sensors on replenishment and supply pipes
A4
+
-
For flow, temperature, pressure measurement (The possibility
of the measurement of the thermal energy is not available)
U0
-
+
Note. 1) - The requirements of the Directive 2004/22/EC are applied to measuring circuits U1 and U2.
The national technical rules are applied to the following measuring circuits: U3; A1; A2; A3; A4; U0.
U0 is applied only to measurement of individual parameters (flow, temperature, pressure) and is not used
for accounting of thermal energy.
2) -At least one of the programmed measurement schemes of calculator must be U1 or U2

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3) * - For these diagrams it is provided tariffing (and measurement of energy for cooling) function.
In this case it is possible to apply to the second heating system only the scheme U0.
Number of heating
system
Type of permissible measuring
circuits
Number of flow
sensors
Number of
temperature sensors
First heating system
U1, U2, U3, A1, A2, A3, A4
V1, V2
T1, T2, T5
Second heating system
U0, U1, U2
V3, V4, V5
T3, T4
Note: Pressure sensors (p1,p2) are intended for the application in any heating system
Measurement diagrams and energy calculation formulas are provided in the Table 1. Flow,
temperature and pressure measurement channels that are not used for heat energy measurement can be
used to monitor other parameters. Measured volume can be converted into weight expression, using
practically measured flow temperature.

Heat meter calculator QALCOMET HEAT 1 PEQMH1V01
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Heat meter calculator QALCOMET HEAT 1 PEQMH1V01
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Type reference example for order placing:
Remark: * - marked numbers are used only for order coding (it is not used for meter marking).
Type
Communication module:
Type
Code
Type
Code
Type
Code
No module
0
RS232
3
Multi Module with currency output
6
M-bus
1
RF-module 868 MHz
4
Multi Module with pulse output
7
Temperature sensors type and temperature difference measuring range:
Code
PL-6 Pt500 with pocket (2-wire), Θ = (3… 160) K
4
PL-6 Pt500 without pocket (2-wire), Θ = (3… 160) K
5
PL-6 Pt500 with pocket (4-wire), Θ = (3… 160) K
6
PL-6 Pt500 without pocket (4-wire), Θ = (3… 160) K
7
No sensors (Pt500, 4-wire), Θ = (3… 160) K
8
No sensors (Pt500, 2-wire), Θ = (3… 160) K
0
No sensors (Pt500, 4-wire), Θ = (2… 160) K
1
No sensors (Pt500, 2-wire), Θ = (2… 160) K
2
Conditional type designation for the 1st heating system scheme:
Designation
Code
Designation
Code
A1
5
U1
2
A2
6
U2
3
A3
7
U3
4
A4
8
Calculator QALCOMET HEAT 1 QH1 –□□ –□–□–□□ –□□ –□□ –□□ –□□–□–□ –□–□□*–
□□*
Country code: K1 –Lithuania, K4 - English
Type of 1st flow sensor. Please select from the table 1.1
Power supply:
Code
3,6 V for calculator; 3,6 V for flow sensors
1
3,6 V for calculator; 230 VDC for flow sensors
2
3,6 V for calculator and +18 V for flow sensors
3
3,6 V (only for calculator, no for flow sensors)
5
230 VDC for calculator and 230 VDC for flow sensors
6
230 VDC for calculator and +18V for flow sensors
7
230 VDC for calculator +3,6V for flow sensors
8
Connection cable length:
Length
Code
Length
Code
Length
Code
Length
Code
Length
Code
3 m
01
15 m
04
60 m
07
125 m
10
200 m
13
5 m
02
20 m
05
80 m
08
150 m
11
10 m
03
40 m
06
100 m
09
175 m
12
No cable
00
Mounting set for flow sensor:
Code
With flange joint
3
With threaded connection
4
No mounting set
0
Type of 2nd flow sensor. Please select from the table 1.1
Type of 3rd flow sensor. Please select from the table 1.1
3-iojo srauto jutiklio tipas. Jutiklių tipai ir jų kodai pateikti 1.1 lentelėje
Type of 4th flow sensor. Please select from the table 1.1
4-ojo srauto jutiklio tipas. Jutiklių tipai ir jų kodai pateikti 1.1 lentelėje
Type of 5th flow sensor. Please select from the table 1.1
5-ojo srauto jutiklio tipas. Jutiklių tipai ir jų kodai pateikti 1.1 lentelėje
Conditional type designation for the 2nd heating system scheme:
Designation
Code
Designation
Code
U0
1
U2
3
U1
2
-
4

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Table 1.1. Flow sensor coding
Type of flow sensor
Code
Ultrasonic flow sensor SDU-1 DN25
17
Ultrasonic flow sensor SDU-1 DN32
18
Ultrasonic flow sensor SDU-1 DN40
19
Ultrasonic flow sensor SDU-1 DN50
20
Ultrasonic flow sensor SDU-1 DN65
21
Ultrasonic flow sensor SDU-1 DN80.2
22
Ultrasonic flow sensor SDU-1 DN80.1
23
Ultrasonic flow sensor SDU-1 DN100.2
24
Ultrasonic flow sensor SDU-1 DN100.1
25
Ultrasonic flow sensor SDU-1 DN150.2
26
Ultrasonic flow sensor SDU-1 DN150.1
27
Ultrasonic flow sensor SDU-1 DN200.2
28
Ultrasonic flow sensor SDU-1 DN200.1
29
Ultrasonic flow sensor SDU-3 qp0,6 G3/4“
74
Ultrasonic flow sensor SDU-3 qp1,0 G3/4“
75
Ultrasonic flow sensor SDU-3 qp1,5 qp/qi=250 G3/4“
76
Ultrasonic flow sensor SDU-3 qp1,5 qp/qi=100 G3/4“
77
Ultrasonic flow sensor SDU-3 qp2,5 qp/qi=250 G1“
78
Ultrasonic flow sensor SDU-3 qp2,5 qp/qi=100 G1“
79
Ultrasonic flow sensor SDU-3 qp3,5 G1 1/4“
80
Ultrasonic flow sensor SDU-3 qp6,0 qp/qi=250 G1 1/4“
81
Ultrasonic flow sensor SDU-3 qp6,0 qp/qi=100 G1 1/4“
82
Ultrasonic flow sensor SDU-3 qp10 qp/qi=250 G2“
83
Ultrasonic flow sensor SDU-3 qp10 qp/qi=100 G2“
84
Ultrasonic flow sensor SDU-3 qp15 qp/qi=250 DN50
85
Ultrasonic flow sensor SDU-3 qp15 qp/qi=100 DN50
86
No flow sensor
00
When placing orders, please find type reference examples for sub- assemblies (flow, temperature
and pressure sensors –selected from Chapter 3) in related technical documents.

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2. TECHNICAL DATA
2.1. General information
Only technical description of calculator is provided in this document. Technical description of
other sub- assemblies (flow, temperature, pressure sensors –according to the modification, selected by
customer, as described in the paragraph 3) is provided in appropriate technical documents.
2.2. Heat energy measurement
2.2.1. Heat energy measurement error of calculator –not more than (0,5+2 / Θ) %,
Where Θ –temperature difference between measured flow and return temperatures (oC),
depending on energy calculation formula (from Table 1). The smallest temperature difference from
(Θ1-Θ2) and (Θ1-Θ5) is used to calculate heating energy E1 for measurement diagrams A1, A2, A4.
2.2.2. Heat energy calculation
Consumed heat energy is calculated according to formulas provided in Table 1.
It is possible to perform calculations in two ways, using pressure values *:
- programmed individually for each particular heating system *;
-practically measured ( 1-st pressure channel corresponds to the supply pipe, 2-nd –return
pipe).
Possible heat energy measurement algorithms (individually selected for each particular
measurement system)*:
standard unidirectional flow measurement, energy is calculated without any restrictions,
special unidirectional flow measurement, energy is calculated:
a) when flow rate exceeds programmed maximum allowed value -
according to programmed rated maximum value for appropriate flow
channel;
b) when flow rate is under programmed minimum allowed value -
according to programmed rated minimum value for appropriate flow
channel;
c) when temperature difference is under programmed minimum
allowed value –according to programmed rated minimum temperature
difference Θ1-Θ2 (for the 1-st heating system) or Θ3-Θ4 (for the 2-nd
heating system).
Error code is generated when parameter values exceed given limits. Also, in
that case the device stops calculating working time, and calculates error
duration.
winter / summer flow in 2-nd channel is measured in both directions, energy is calculated
taking into account flow direction without any limitations (only for “A1”
measurement scheme –see Table 1).
Calculated energy is stored in main register and in corresponding tariff register (1 or 2) when tariff
condition is activated.
Tariff condition is programmed in configuration mode. One of the following conditions can be
programmed independent of 1st or 2nd tariff:
When the tariff conditions are fulfilled the consumed heat energy is counted in corresponding
tariff register (energy E2 orE3). Energy to the main register E1 and energy to the next register is
not counted.
Energy to the main register E1 is counted, when conditions of one of the activated tariffs are not
fulfilled.
When the tariff with the condition „T1<T2“ is active, energy Et is calculated by formulas in 1
Table, marked with „*“.
Alternate of thermal energy is calculated each 10 s depending on water volume and measured
temperatures by formulas, depending on selected measurement scheme (Table 1).

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2.3. Temperature measurement
Number of sensor inputs (measurement channels) 1…5
Temperature sensors type Standard version - Pt500
(by order Pt1000)
Absolute temperature measurement error no more than 0,3 oC
Sensor connection method 2-wire, 4-wire
Max. cable length between calculator and
each of the sensors:
for the 4-wire method not more than 200 m
for the 2-wire method not more than 5 m
Measuring range 0…160 oC
Displaying range -40…160 oC
Temperature difference (Θ1-Θ2, Θ1-Θ5
or Θ3-Θ4) measuring range 3…160 K or 2…160 K
Resolution of temperatures and temperature
difference 0, 1 oC
Recorded errors and error duration Θ >160 oC (or open circuit),
Θ < -40 oC (or short-circuit ),
temperature difference Θ1-Θ2 or Θ3-Θ4
is below programmed Θmin value (See
cl.8.6)
2.4. Flow measurement
Number of pulse inputs 1…5
Pulse input device class IB (or IC- if noise filter is not available)
Pulse value programmable
Input noise filter programmable (only for class IB)
Max. cable length between calculator and
each of the sensors not more than 200 m (see table 2)
Reverse flow measurement possibility
(using direction indication signal) possible for 2-nd flow channel
Recorded errors and error duration short circuit, disengaged flow sensor,
(or log.1) longer than 2 s
flow rate exceeds programmed maximum
allowed value
flow rate is under programmed minimum
allowed value
Measurement units m3or t (only for 1 …4 flow measurement
channel)
Maximum permissible input pulse frequency and
minimal permissible pulse or pause duration,
depending on pulse type and cable length:
Table 2
Power supply type for calculator, flow
pulse input type
Sensor
cable
length, m
Maximum permissible
pulse frequency, Hz
Minimal permissible
pulse or pause
duration, ms
Mains supply
or active pulses
Up to 200
1000 (5)*)
0,5 (100) *)
Battery supply and passive pulses
(transistor key or mechanical contact)
Up to 10
200 (5)*)
2,5 (100) *)
Up to 100
10 (5)*)
50 (100) *)
*) - values in brackets for pulse input devices class IB

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2.5. Pressure measurement
Inputs (measurement channel ) 0…2
Display units kPa
Fiducial error not more than 0,5 of the upper limit of
the measurement range
Pressure measurement ranges:
- lower limit 0 kPa
- upper limit programmable
Input current limits 0-5 mA, 0-20 mA, 4-20 mA (programmable)
2.6. Time measurement
Relative time measurement error not more than 0,01 %
Calculator measures:
-real time - calendar
-time, when device is powered on
-total operation time, when 1st and 2nd measurement systems are functioning normally
-normal operation time for each measurement system
-total failure time, when at least one temperature or flow sensor is broken
-failure time for each measurement system (in the case of temperature or flow sensor failure)
-time, when flow rate exceeds programmed maximum allowed value for channels q1…q4
-time, when flow rate is under programmed minimum allowed value for channels q1…q4
-time, when temperature difference is under programmed minimum allowed value Θ1-Θ2 or
Θ3-Θ4.
Display resolution:
the real time display 1 s
for operating time display 0,01 h
Time of storage date not less than 10 years
2.7. Display (LCD)
The device is equipped with 8-digits LCD (Liquid Crystal Display) with special symbols to
display parameters, measurement units and operation modes
The following information can be displayed:
-integral and instantaneous measured parameters, listed in the Table 4.
-archive data, listed in Table 4.
-device configuration information (see Fig. 8.7).
-report printing control information (see Fig.8.5).
Display resolution (directly corresponding with pulse output value), depending on programmed
maximum flow rate value (the highest value in the energy calculation formula for each particular heating
system), is provided in the Table 3.
Table 3
Maximum
programmed flow
rate, m3/h
Displayed fluid volume (mass)
lowest digit value
(flow pulse output value), m3
Displayed energy lowest digit
value (energy pulse output
value),
Maximum
value of
thermal
power, MW
5
0,001
0,1 kWh, 0,0001 Gcal, GJ
3
50
0,01
0,001 MWh, Gcal, GJ
30
500
0,1
0,01 MWh, Gcal, GJ
300
> 500
1
0,1 MWh, Gcal, GJ
3000

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2.8. Measured and recorded parameters are listed in the Table 4
Table 4
Arbitrary
symbol
Parameter
Display capacity,
measurement units,
measurement ranges
Recorded in
archive
Integral parameters
E
Total energy consumed in 1-st and 2-nd system
8digits,
MWh, Gcal, GJ*
Absolute values
every hour,
alterations every
hour, day and
month
E1
Energy consumed in 1-st system
E2
Energy consumed in 2-nd system
E3
Energy consumed for heating in 1-st system (or
„L3“ tariff energy)
V1(M1)
Fluid volume (mass) in 1-st system
8 digits,
m3(t)
V2 (M2)
Fluid volume (mass) in 2-nd system
-M2
Reverse flow fluid mass in 2-nd channel (only for
“winter / summer” algorithm)
8 digits,
m3(t)
M1-M2
Fluid volume (mass) difference between 1-st and
2-nd measurement channels
8 digits,
t
V3 (M3)
Fluid volume (mass) in 3-rd system
8 digits ,
m3(t)
V4 (M4)
Fluid volume (mass) in 4-th system
M3-M4
Fluid volume (mass) difference between 3-rd and
4-th measurement channels
8 digits,
t
td1
Operation time of 1-st heating system
8 digits,
0,01 h
td2
Operation time of 2-nd heating system
t
Total operation time
Er
Common measurement errors
3 digits
Er 1
Flow measurement errors
5 digits
Er 2
Temperature measurement errors
5 digits
V5
Fluid volume (mass) in 5-th channel
8 digits, m3
-------
Instantaneous parameters
P
Total instantaneous thermal power on 1-st and 2-
nd systems
P1
Thermal power on 1-st system
5 digits,
kW
-------
P2
Thermal power on 2-nd system
P3
Thermal power on 1-st system consumed for
heating (or „L2“tariff thermal power)
q1
Flow rate on 1-st channel
5 digits,
m3/h
-------
q2
Flow rate on 2-nd channel
q3
Flow rate on 3-rd channel
q4
Flow rate on 4-th channel
q5
Flow rate on 5-th channel
p1
1-st channel fluid pressure
0 - 2500,0 kPa
Average
hourly, daily and
monthly data
p2
2-nd channel fluid pressure
1
1-st channel fluid temperature
0-160 oC
- 40,00 ...+160,00 oC
2
2-nd channel fluid temperature
1-2
1-st and 2-nd channel temperature difference
2- 160 oC
(0...160,00) oC
3
3-rd channel fluid temperature
0-160 oC
- 40,00 ...+160,00 oC
4
4-th channel fluid temperature
3-4
3-rd and 4-th channel temperature difference
3- 160 oC
(0...160,00) oC
5
5-th channel fluid temperature
0-160 oC
- 40,00 ...+160,00 oC

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2.9. Data recording and storage
Following daily, weekly and monthly parameter values are recorded in calculator’s memory:
- absolute integral instantaneous parameter values (listed in Table 4)
- hourly, weekly and monthly alterations of integral parameters (listed in Table 4)
- hourly, weekly and monthly average values for all measured temperature and pressure values
- error and information codes (see paragraph. 8.2.1) that occurred during the last hour, day and
month
Archive data is retained even if device is disconnected from power supply for the whole lifetime
period.
Data logger capacity:
up to 32 last months –for daily and monthly records,
up to 3,5 last months (2600 hours) - for hourly records.
2.10. External communication modules and interfaces
Optical interface EN 62056-21:2003 (IEC 62056-21:2002)
(integrated into the front panel)
The following communication modules are available as options:
Two configurable pulse-frequency outputs Class OD;
(available only with optional plug-in multi Active +18 V (when mains supply)
module SKU46 with pulse outputs) Passive (Umax42 V, I< 20 mA )
Two configurable current outputs
(available only with optional plug-in multi
module SKU45 with current outputs) 0-20mA or 4-20mA
Configurable double relay output
for limiting regulation or alarm function
Available only with mains power supply module
(see paragraphs 2.11 and 2.12) 230V, 2A
Serial digital communication interface M-bus, CL or RS -232
(as optional plug-in module)
RF-module 868 MHz
(as optional plug-in module)
Two pulse outputs for testing Class OD;
(terminals 16;17;18) Active +3,5 V 0,3 V;
Permissible loading current up to 0,1 mA
The configurable pulse-frequency output in “pulse mode” can be used for thermal energy (E, E1,
E2, E3) or quantity of water V1 (M1), V2(M2), V3(M3), V4(M4), V5 pulses Pulse value will correspond
to the lowest digit of indicated parameter.
The configurable pulse-frequency (or current - module SKU45) output in “frequency mode”
(available only with mains power supply module) can be used for thermal power ( P1, P2, P3), flow rate
(q1, q2, q3, q4), temperature or temperature difference (1…5; 1-2 or 3-4 ) or pressure (p1, p2)
pulses.
Signal with zero frequency (or the minimum value of the selected range of a current) will
correspond to zero (0) value of the output parameter, and signal with frequency 1000 Hz (or maximum value of
the selected range of a current) –will correspond to the maximum value of the chosen parameter:
flow rate- qmax,
temperature - 160 °C,

Heat meter calculator QALCOMET HEAT 1 PEQMH1V01
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pressure - p max,
thermal power - qmax * 100 [kW],
where the qmax-maximum flow rate [m3/h] for this system).
2.11. Regulation functions (additionally):
Using electrically-controlled valve gives the possibility:
automatically maintain selected parameter value within defined limits,
prevent selected parameter from exceeding maximum allowed value,
prevent selected parameter from falling below minimal allowed value.
Following parameters can be selected for regulation:
any thermal power (P1…P3),
any flow rate (q1…q5) or any flow rate difference (q1-q2 or q3-q4)
any temperature (Θ1 … Θ5),
any temperature difference (Θ1- Θ2 or Θ3-Θ4),
any pressure (p1 or p2) or pressure difference (p1-p2).
NOTE: Regulation will be efficient only if regulated valve is installed in such way that it can
impact regulated parameter.
Regulation speed (time interval from fully opening the valve to fully closing the valve) can be
selected within boundaries 10…999 s.
Following electrically-controlled valves may be used for regulation:
with separate control inputs for opening and closing the valve,
where current required to open or close the valve does not exceed 2A,
where voltage required to open or close the valve does not exceed 230 V (if control
voltage is different from ~230V 50Hz –appropriate additional valve power supply module
should be used),
where time interval from fully opening the valve to fully closing the valve is within
10…999 s.
2.12. Alarm function (additionally):
If regulation function is not required, relay output can be used to generate alarm signal. Relay
contacts will close, if:
- selected parameter value exceeds measurement limits,
- selected parameter exceeds maximum allowed value,
- selected parameter falls below minimum allowed value.
Any parameter listed in paragraph 2.11. can be used to generate alarm signal.
Relay output can handle electrical current up to 2A from 230V source
2.13. Supply voltage
Mains supply AC (502) Hz, 230 V
10
15


,
Power supply < 3 VA (only for calculator)
(consumption of energy per year to 26.3 kWh)
Power supply < 15 VA
(for calculator and extra sensors, consumption of
energy per year to 131.5 kWh)
Readings are unavailable in case of malfunction of the power supply of calculator . Readings will again
be available only to the renewal of the power supply.
Battery 3,6 VDC, D-cell lithium
Replacement interval:
only for calculator not less than 12 years,
for calculator
and 2 extra ultrasonic flow sensors not less than 6 years,

Heat meter calculator QALCOMET HEAT 1 PEQMH1V01
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2.14. Power supply for sensors
Voltage for powering pressure or flow sensors +18 V 10 
(only for calculator with mains supply module) total current < 400 mA.
Voltage for powering flow sensors +3,6 V 10 ,
(only for calculator with mains supply module) total current < 20 mA.
Voltage for powering ultrasonic flow sensors +3,6 V 10 ,
(for calculator with supply from battery) total current < 120 mkA.
2.15. Mechanical data
Dimensions of calculator 159 mm x 52 mm x 142 mm
Weight of calculator 0,5 kg.
Protection class IP65
Climatic environment class C by EN1434
Ambient temperature at +5 oC to +55 oC
(non-condensing, indoor installation)
Relative humidity < 93 
Atmospheric pressure at 86 kPa to 106.7 kPa
Mechanical environment class M1
2.16. Electromagnetic environment class E2
3. ACCESSORIES AND SUB-ASSEMBLIES OF HEAT METER
Required sub-assemblies and accessories may be delivered according to the particular application
and flow measurement scheme, as defined by the customer (listed in Table 5)
Table 5
Item
Amount,
pcs
1. Heat meter calculator QALCOMET HEAT 1
1
2. Technical description, user manual for QALCOMET HEAT 1
1
3. Mounting kit of calculator
1*
3. Internal battery 3,6 V
1*
4. Internal 230 V mains power supply module SKM37
1*
5. Communication module SKS43 with Mbus interface
1*
6. Communication module SKU45 with Mbus/CL/RS232 interfaces and two current outputs
1*
7. Communication module SKU46 with Mbus/CL/RS232 interfaces and two pulse outputs
1*
8. Communication module SKS48 with RS-232 interface
1*
9. RF module 868 MHz
1*
10. Temperature sensors PL, Pt500
1…5*
11. User manual for temperature sensors type PL
1…3*
12. Ultrasonic flow sensor SDU-1
1…4*
13. User manual for Ultrasonic flow sensor SDU-1
1…4*
14. Optical interface adapter (compatible with RS232 interface)
1*
15. CD with remote data reading and service software
1*
REMARKS: 1. “*” – required options selected by the customer,
2. Heat meter may be equipped with other types of flow and temperature sensors, if they
correspond to requirements listed in paragraph 2, requirements of EN1434 standard and have the EC-
type examination certificate by Directive 2004/22/EC

Heat meter calculator QALCOMET HEAT 1 PEQMH1V01
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4. OPERATING PRINCIPLE
The calculator QALCOMET HEAT 1 is a sub-assembly of a heat meter, together with standard
flow sensors, temperature and pressure sensors.
Flow sensors, based on ultrasonic, electromagnetic or mechanical measurement principle, can be
used for flow rate measurement. Suitable types of flow sensors are listed in Table 5. Other types of flow
sensors can also be used if they correspond to requirements provided in paragraph 2.
Flow sensors are connected to the calculator using two-wire or three-wire cable. Flow sensors can
be powered from calculator power supply, from own internal battery or directly from mains power source.
Operation principles of flow sensors are described in appropriate technical documents, provided together
with flow sensors.
Heat meter calculator QALCOMET HEAT 1 is multi-channel programmable measurement
device. It can measure and record simultaneously parameters from 2 heating systems up to 5 temperature
measurement channels, up to 5 flow measurement channels and up to 2 pressure measurement channels.
The user may select one of eight possible measurement scheme, depending on measurement
system configuration and in justice to the heating (conditioning) scheme type.
Sensor output signals are passed to appropriate calculator’s inputs:
-flow rate values are transmitted as pulses,
-pressure values are transmitted as limited current,
-temperature values are transmitted as resistance alterations.
Later analog signals are converted into digital code and used by microprocessor to calculate flow
rate, temperature and pressure on relevant measurement channel.
Consumed fluid volume corresponds to received number of metering pulses, taking into account
pulse value. Consumed fluid mass is calculated by integrating volume alterations multiplied by relevant
fluid density, taking into account measured fluid temperature and measured (or preprogrammed) pressure.
Heat energy is calculated using formulas provided in Table 1.
The following pressure values can be used for calculations:
- programmed individually for each particular heating system
- practically measured (1-st pressure channel corresponds to the supply pipe, 2-nd –return pipe).
Possible heat energy calculation algorithms (individual for each measurement system):
standard unidirectional flow measurement, energy is calculated without any
restrictions,
special unidirectional flow measurement, energy is calculated:
a) when flow rate exceeds programmed maximum allowed value -
according to programmed rated maximum value for appropriate flow
channel;
b) when flow rate is under programmed minimum allowed value -
according to programmed rated minimum value for appropriate flow
channel;
c) when temperature difference is under programmed minimum
allowed value –according to programmed rated minimum temperature
difference Θ1-Θ2 (for the 1-st heating system) or Θ3-Θ4 (for the 2-nd
heating system).
Error code is generated when parameter values exceed given limits. Also, in
that case the device stops calculating working time, and calculates error
duration.
winter/summer flow in 2-nd channel is measured in both directions, energy is calculated
taking into account flow direction without any limitations (only for “A”
measurement scheme –see Table 1).
Flow in 2-nd channel is recorded separately –direct inlet flow as (“2”) and
return flow in opposite direction - as (“-2”).
Information on flow direction is received using separate logical signal, connected to 4-th flow input. In
this case, only 1-st, 2-nd and 5-th flow sensors can be used for flow measurement.

Heat meter calculator QALCOMET HEAT 1 PEQMH1V01
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Parameters measured in each measurement channel together with archive parameters are stored in
memory and can be displayed on LCD, printed, transmitted through optical interface or through bi-
directional galvanic ally-insolated M-Bus, CL or RS-232 interface.
If current output module is used, 1-st current output parameter will correspond to 1-st pulse output
parameter (respectively 2-nd current output parameter will correspond to 2-st pulse output parameter). In
this case output frequency mode should be activated. Minimum value of the selected range of a current
will correspond to zero (0) value of the output parameter, and maximum value of the selected range of
current will correspond to the maximum value of the chosen parameter: flow rate- qmax,
temperature- 160 °C, pressure - p max, or thermal power - qmax * 100 [kW], where the qmax-maximum flow rate
[m3/h] for this system. User may set current limits (0-20mA or 4-20mA) by using appropriate jumpers.
5. MARKING AND SEALING
5.1.Marking:
There are following information on the front panel of calculator - manufacturer’s trade mark , type
of calculator, serial number, year of manufacture, EC-type examination certificate number, limits of the
temperature, limits of the temperature differences, environmental class by LST EN1434-1,
electromagnetic and mechanical environmental class, enclosure protection class, type of temperature
sensors, conditional designation of measuring scheme for1st and 2nd heating system, flow sensor placing
(in forward or return pipe), flow inputs pulse values, maximum flow rate, power supply.
Numbers of terminal pins are marked close to the terminal
5.2.Sealing:
The following calculator sealing is provided:
Manufacturer’s warranty seal - adhesive sticker on the fixing bolt of electronic module under
protecting cover (Fig. 8.2, pos. 1)
After verification manufacturer’s security seal - adhesive sticker on the bolt of cover protecting
electronic module (Fig. 8.2, pos.2)
Installation seals –hanged seals on the fixers of junction of the top and bottom part of the housing
of calculator (see Appendix D).
5.3. Flow, temperature and pressure sensors are marked and sealed according to requirements
provided in relevant technical documentation.
6. SAFETY REQUIREMENTS
The calculator is made and inspected in compliance with EN61010-1.
There are no life dangerous factors, when calculation unit is powered from 3,6 V lithium battery.
If calculation unit is powered from mains power supply, it contains dangerous ~230 V electrical current.
It is necessary to follow general safety requirements during installation and maintenance process.
The electrical connections must be made in compliance with the relevant standard while
observing local safety regulations. Only qualified technical personnel may install and maintain heat
meters (certificates for electrical installation work with equipment up to 1000 V are required). Personnel
must be familiar with appropriate technical documentation and general safety instructions. To ensure safe
operation, the user must observe the notes and warnings contained in this instruction.
Protective grounding is not required, because housing is made from plastics, and conductive parts are
not exposed to the surface. Device comply with the II safety class.
To protect power circuits from current overrun, 1A fuse, marked “F1”, is mounted on the bottom
side of power supply module. Remove power supply module to replace the fuse.
If relay output current exceeds 2 A, it may damage output circuits. It is recommended to use
additional protection circuits to protect relay outputs from damage.
Operation safety requires reliable isolation of electrical circuits, stable mounting of calculating
unit and proper grounding of all system components.
Safety requirements for flow, temperature and pressure sensors are provided in appropriate
technical documentation.
Warning! Switch off mains power supply before changing, repairing, connecting or
disconnecting system parts! Power switch has to be installed close to the calculator.

Heat meter calculator QALCOMET HEAT 1 PEQMH1V01
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7. INSTALLATION
Basic requirements
Before installing the device:
-check if all parts listed in the documentation are available,
-check if there are no visible mechanical defects,
-check if there are valid labels of manufacturer and certification authority.
Only qualified personnel may install the equipment, following the requirements listed in this
document, in technical documentation of other system components and in heat meter installation project.
Mechanical mounting
Calculator may be installed in heated premises, on vertical surface. It may not be exposed to direct
sunlight. Calculator can be mounted in five different ways:
Wall mounting:
without possibility sealing of mounting: with possibility sealing of mounting:
Mounting on standard DIN-rail:
Panel mounting:

Heat meter calculator QALCOMET HEAT 1 PEQMH1V01
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7.1.3. Flow, temperature and pressure sensors have to be installed according to installation
requirements given in the corresponding installation manuals and by requirements as provided in Annex
B, Table B1.
Electrical installation of calculator, flow, temperature and pressure sensors is performed according to
selected measurement scheme (Table 1) and appropriate installation diagrams (Appendix B), also
according to technical requirements for other system components. Description of connection terminal pins
is provided in Appendix C.
Cross-section for each signal cable should be not less than 0,14 mm2. If cable length between
calculation unit and sensors exceeds 5 m, shielded cables have to be used. Cables should be run through
rubber seal caps and anchored with clamps. Four-, three- or two-wire cable should be used respectively.
Cable shield should be connected to appropriate terminal pins (see diagram in Appendix B) or to any free
contacts marked with symbol “ “, either anchored with metal clamps.
Calculation unit may be connected to mains power supply only through switch (nominal current 0,1
A), placed close to the device, using two-wire cable with cross-section of each wire not less than 0,5
mm2.
To ground the equipment, copper wire with cross-section not less than 0,5 mm2should be used.
Shielded cable should be used for all connections longer than 1,5 m. The shield should be properly
grounded. It is recommended to use plastic or metal sleeves for additional cable protection.
7.2. Setting up the configuration
The calculating unit is universal device for measurement of supplied (consumed) heating energy.
The calculating unit has to be customized for the particular application, putting into account the type of
heating system, also types of flow, temperature and pressure sensors. After placing an order, calculating
unit is adapted to one of eight possible measurement schemes. Energy calculation formulas and
measurement schemes are presented in the Table 1. Flow, temperature and pressure channels, not utilized
for heat energy measurement, can be used to control other parameters. It is possible to select
measurement units for flow measurement (volume units or mass units –according to measured media
temperature).
The calculator has to be programmed for the specific application using the control buttons and
, also the configuration button “SET” (under the lid, see Fig. 8.1 and 8.2).
To enter the configuration mode, open the lid and press the button “SET”. Press the “SET” button
once more to leave the programming mode.
When configuration (programming) mode is active, label “SET” is displayed in the upper right
conner of the display. All parameters have to be programmed. Possible parameter limits and abbreviations
are listed in Appendix A.
The algorithm for setting up parameters is shown in Fig. 7.1.
REMARK: 1. All parameters marked with the symbols “*”, “**” have to be programmed
correspondingly in the same way.
2. Readings on the indicator ( for example: “1.00E-2”) are presented in exponential
form.
There: X.XX E XX
For example: indicated value 1,25E-2 = 1,25*10-2 = 0,00125.
Exponent value
Base value

Heat meter calculator QALCOMET HEAT 1 PEQMH1V01
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Fig. 7.1. Programming the calculator –setting up operation modes. “1, 5, 6, 7, 10, 11, 12, 16E, 17, 18”
parameter values have to be ordered individually for each device, and can not be changed during
operation. Parameters “21...25” are not displayed in battery-powered version.
Serial number
*Customer number
* Real time calendar
*Real time clock
Serial communication
interface data transfer rate
(“1”wire,”2”-optical)
* Serial communication
interface address
* 1-st heating system
scheme and energy
calculation algorithm.
For example: scheme -
U2, algorithm –1
* replacement date of
the battery
SET
r
Test mode
Off -deactivated
On-activated

* Flow input pulse value
on inputs q1…q5. For
example, 10 l/ pulse.
* Maximum flow rate for
inputs q1...q5 For example:
qmax =360 m3/h
** Number of active flow
inputs (q1..q5). Only
active input numbers are
displayed.
** Number of active
temprature inputs
(1..5).
Only active input numbers
are displayed.
* Minimum flow rate
qmin for inputs q1…q5
For example: qmin= 0,05 m3/h
* Maximum projected
flow rate for inputs
q1…q5 qmaxproj. For
example: 360 m3/h
* Minimum projected
flow rate for inputs
q1…q5 qminproj.
For example: 0,05 m3/h
B
Set day:
12.31 (<month>.<day>)
-yearly set day,
--.30 (-.<day>) -
Monthly set day,
-- . -- -function is off
Condition of tariff „L2“
Tariff is active, if
(1-2)<0oC
(cooling meter).
OFF–tariff is deactivated
Condition of tariff „L3“
Tariff is active
from7:00 till 23:00 h.
OFF–tariff is deactivated
** Number of active
pressure inputs (p1..p2).
Only active input
numbers are displayed
* 2-nd heating system
scheme and energy
calculation algorithm.
For example: scheme -
U2, algorithm –1



























A