Enduser Instructions, General - Danfoss VX Solo HWS Instructions For Installation And Use Manual

Instructions for installation and use

4.0 Enduser instructions, General

Instructions
Please read these instructions carefully before installing and commis-
sioning this substation. The manufacturer accepts no liability for loss
or damage resulting from failure to comply with these instructions
for use. Read and follow these instructions carefully to prevent the
risk of physical injury and/or damage to property. Exceeding the
recommended operating parameters appreciably increases the risk
of personal injury and/or damage to property.
Installation, commissioning and maintenance must be carried out
by qualified and authorised personnel (both plumbing and electri-
cal work).
Once the station has been installed and is operating, there is nor-
mally no need to alter the settings or other functions. The district
heating substation is very reliable and easy to operate.
If necessary, you can change the temperature settings as described
on page 6. For more detailed information about the substation,
see the sections concerning installation and commissioning.
Description
These instructions apply to substation type VX Solo HWS, which is
a district heating substation for indirect heating for single-family
houses, semi-detatched and terraced houses as well as flats. With
one heating circuit for radiator and/or floor heating and with con-
nection pipes for domestic hot water cylinder on secondary side.
For wall-mounting.
The HE supply temperature is controlled by a self-acting temperature
controller Danfoss AVTB.
An immersion control thermostat of your choice choice, used to
control the water temperature in the hot water cylinder, must be
mounted on site.
As optional supply, Danfoss offers an immersion control thermostat
type ITC, which must be ordered separately and supplied loose to-
gether with the substation for mounting on site.
The ITC must be mounted in the 2/3 point of the DHW cylinder.
The VX Solo HWS is specificly prepared for connection of a TP9000
programmable room thermostat / DHW time controller, which allows
heating and DHW operation according to demand. The integrated
room thermostat will open/close the zone valve for heating opera-
tion and the DHW sensor in the cylinder or the DHW timer will open/
close the zone valve for DHW operation.
We recommend regular inspections of the substation - ideally in
connection with readings of the district heating meter.
Pay special attention to any leaks and an excessively high return
temperature in the district heating circuit (poor cooling of the district
heating water). Cooling – i.e. the difference between the supply and
return temperature of the district heating water – has a significant ef-
fect on the overall energy economy. Therefore, it is important to focus
on the supply and return temperature in the heating system.
The difference should typically be 30–35°C in systems that operate
with radiators.
Irregularities
When reading the meters, check all joints and connections for leaks.
Check the troubleshooting section before contacting your pro-
fessional provider.
Danfoss District Energy
VX Solo HWS substations
Warning! Hot surfaces
Parts of the substation may be very hot and can cause burn in-
juries. Be very careful when you are in the immediate vicinity of
the unit.
Warnings about high pressure and high temperature
The maximum supply temperature in the district heating net-
work can be up to 110°C and the operating pressure can be up
to 16 bar. This may result in a risk of scalding from touching the
substation and from outflow of the medium (water/steam). Ex-
ceeding the substation design data and operating parameters for
pressure and temperature carries an appreciable risk of personal
injury and/or damage to property.
Emergencies
In the event of fire, leaks or other hazards, immediately shut off
all sources of energy to the substation, if possible, and call for
appropriate assistance.
If the domestic hot water is discoloured or malodorous, shut off
all ball valves on the substation and the storage cylinder, notify
all users and call for professional assistance without delay.
VI.HE.M1.02
5 5
DKDHR