Instructions for installation and use
Akva Lux II TDP RENO
© Danfoss | Produced by Danfoss Redan A/S | 2015.10 | 13
VI.JV.R1.02
9.
Adjustment and commissioning of the Akva Lux II TDP RENO
Adjuster lever
General information
PLEASE NOTE! Some models may have a slightly different appearance, but the
control function is in principle the same as described below.
Maintenance and commissioning
Perform maintenance procedures according to the maintenance frequen-
cy chart presented in the section entitled “Operation and maintenance”
on pages 15 - 16. Perform adjustment in accordance with the instructions
below.
For cleaning of plate heat exchanger, please see page 15.
Commissioning
Commission the substation in accordance with the instructions on pages 8-14.
Domestic hot water
The domestic hot water is prepared in the heat exchanger based on the
flow principle and the temperature is controlled by a combined hydraulic
and thermostatic self-acting controller
PTC2+P
(Fig. 1a) with integrated
differential pressure controller, which blocks the flow of primary and sec-
ondary side flow through the heat exchanger immediately after comple-
tion of the tapping process.
Regulation of the hot water temperature PTC2+P
Set the DHW temperature by moving the adjuster lever towards “+” (hotter)
or “-” (colder). Start by turning the lever
clockwise
– until it stops/until you
cannot turn it any further. Then turn the lever
counter-clockwise
until the
temperature of the tap water is approx. 48°C during normal tapping flow
(7–8 litres per min.).
By-pass function (factory connection).
The Akva Lux II TDP-F substations are supplied with the a Danfoss FJVR by-
pass thermostat (Fig. 2), so that when water is tapped, the water heater
immediately starts to produce hot water. We re-commend setting of the
thermostat in pos. 3. If you have to wait a long time (i.e. more than 20 sec.)
for hot water, it may be necessary to position the thermostat higher than
pos. 3. If you want to avoid waiting time altogether, you will need to set up
domestic hot water recirculation to the tapping points.
Heating circuit, Differential pressure controller
The differential pressure controller (Fig. 3) reduces the high fluctuations in
pressure in the district heating network, ensuring constant operating pressure
across the substation.
Differential pressure controller Type AVPL
The differential pressure controller is pre-set to 0.1 bar from the factory. To alter
the differential pressure, use an Allen key – NV3. One full turn is equivalent to
0.01 bar. Turn clockwise to increase the pressure, counter-clockwise to reduce
it.
Recommended setting
Basically, it is recommended to open the controller to its full extent. If dis-
ruptions to operation arise, such as noise or fluctuations/poor regulation
capacity, it may be necessary to adjust the differential pressure controller
to a lower operating pressure.
The controller can be adjusted subsequently – see the appendix entitled:
Instructions AVPL 1.0/1.6
AVPL
Fig. 1
Fig.. 2
Scale setting (indicative)
Pos. 2 = 30°C
3 = 40°C
Fig. 3
7369316-0 SIBC
VI.CB.T1.6K © Danfoss 05/03
1
Instructions
AVPL 1.0/1.6
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5
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7
r
kPa
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25
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0
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