Instruction Manual ZHK
102/140
V07-21.0
The corresponding K-factors of the fan are shown on the fan-motor data sheet or on the technical
data sheet for the AHU. The data on the data sheet always refers to one fan.
The air density at the measuring point is to set up manually, depending on sea level, temperature
and humidity. In most cases, 1.2 kg/m³ is a suitable value.
Note:
If the EUROCLIMA delivery includes a device for airflow measurement, then it is the respon-
sibility of the client to make sure that this is configured on site before commissioning the device.
Airflow rate indicator type PREMASREG 7161
This airflow indicator is used by EUROCLIMA and is supplied with the AHU, if included in the
scope of delivery. The setting of the parameters must be made by the customer before commis-
sioning
. This means, it is the client’s responsibility t
o complete this task in accordance with the en-
closed instructions of the component manufacturer.
The display is programmed according to formula B. Correspondingly, the value kB specified on the
data sheet in the fan section or the technical data sheet for the AHU must be used.
If more than one fan is installed in the supply or exhaust air, then the following instructions must be
observed:
Fan execution
Displays in pcs.
Measuring points
Total air flow rate
2 fans 50 % + 50 %
1 display
Only the fan near-
est to the operating
side
Displayed value * 2
2 fans 100 % + 100 %
2 displays
Both fans sepa-
rately
Displayed value (pow-
ered fan)
>2 fans/fan walls
1 display
Only the fan near-
est to the operating
side
Displayed value * num-
ber of powered fans)
Table 15:
Notes for airflow rate indicators, which are included in the scope of delivery
Processing the pressure signal in other devices
Devices from other manufacturers may require a conversion of the K-value. Therefore, always ask
for the formula, which the device needs and uses.
8.1.3 Heat exchanger
The heat exchangers, fittings and valves shall be tested for tightness and integrity.
Attention!
Refrigerant
If direct expansion heat exchangers or air cooled heat exchangers are installed, the system must
be filled with refrigerant after the complete assembly. In this case, a refrigeration engineer must ex-
ecute the installation and piping.
Water heat exchangers
Normal heating, cooling coils filled with water and additives for freeze and corrosion protection:
-
Open vent valve.
-
Water valve is initially only to open slightly, so that the coil will be slowly filled with water. To
avoid heat stress.
-
When the heat exchanger is filled, close the vent valve.
-
Open the water valve fully and then start the fan?
-
Subsequently, the entire piping system must be vented properly.
Steam heat exchanger filling
Summary of Contents for ZHK
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