DVS Positive Pressure Home Ventilation System User manual

DVS® Positive Pressure
Home Ventilation System
Operating Guide
Enjoy a healthier, more comfortable home
76a Stoddard Road, Mt Roskill, Auckland 1041 | 285 Cashel Street, Christchurch 8011
Phone: [phone] | www.dvs.co.nz

What’s in this guide?
Introduction 2
How it Works 2
The Main Screen 3
Basic functions
Turning your DVS system o or on 4
Adjusting your Set temperature 4
Fan Boost option 4
Advanced functions 5
Adjusting the fan speed 5
Adjusting the Heat Retention fan 6
Adjusting the Heat Recovery fan 6
Adjusting the Air warmer or Tempervent settings 9
Automatic summer ventilation 9
Air Transfer 10
Other functions
Setting the clock 13
View temperature history graphs 13
Filter service 13
Diagnostics 13
DVS Filters 14
Filter Replacement Instructions 15
How to get the best from your DVS 16
Recommendations 18
Frequent Questions and Answers 20
DVS oer a wide range of products 22
Introduction
Thank you for choosing a DVS home ventilation system for your home. A DVS ventilation
system is able to make a signicant dierence to you and your family - creating a drier,
fresher and healthier home, and improving your comfort and health. DVS has been supporting
New Zealand for over 17 years with quality appliances and we’re proud to have our products
used every day by many New Zealanders.
All DVS ventilation systems are designed and made here in New Zealand to suit our unique
climatic conditions and the needs of New Zealand homeowners. DVS’ reputation for innovative
ventilation and health and comfort solutions has been built up over many years of research,
development and customer feedback.
Your standard DVS ventilation system features a state of the art fully automated control panel,
with advanced functions and options, a user-friendly interface, and a quality German-made
energy ecient fan. Optional extras such as automatic summer ventilation via an external
vent, air preheating options via an air-warmer, or the unique DVS Tempervent, DVS Integrated
Heat Transfer and full heat exchange ventilation are available as add-on extras.
These operating guidelines contain helpful instructions on how to operate and adjust your
system. Although your system has been congured, and the airow and settings individually
calibrated to the size of your home to run automatically, you will be able to easily ne tune the
settings or adjust the “aggressiveness” of the system by adjusting the heat recovery and heat
retention settings.
How it Works
Page 2
Updated 9 April 2013
How to operate your DVS® home ventilation
system

Basic Functions
You can make the most common adjustments to your DVS system from the Main Screen. These
are described on this page.
Turning your DVS system o or on
To turn the DVS system o or on, press and hold the Menu button for 5 seconds.
If the system is switched o, the screen will display “SYSTEM STANDBY” and the fan and all
accessories will be turned o.
Press and hold the Menu button for 5 seconds to turn the DVS system on again.
Adjusting your Set temperature
The Set temperature (called “Set temp” on the screen) is the temperature
that the DVS system strives to achieve inside your house.
For example, the system can increase the airow if the roof space is warmer
than the house and the house temperature is below the Set temperature.
If there is no heat in the roof space, the system will not be able to achieve
the Set temperature without additional heating.
To adjust the “Set temp” for your home:
• Press the up or down arrow. (The display will change to show the Set temp only, while
you’re adjusting it.)
• Use the up and down arrows to adjust your required temperature.
You can increase or decrease the Set temperature in half degree increments (e.g. 20o, 20.5o,
21o, 21.5oetc.).
Fan Boost option
Use the Fan Boost option if you want the fan to run at full speed for a period
of time.
This function is useful for clearing the house of extra moisture or smells, or to
temporarily recover maximum heat from the roof space for heating purposes.
Note that the fan may be noisier at this speed.
To set the length of time for Fan Boost, or to turn it o:
• Press and hold the up arrow for 3 seconds or more. This takes you to the
FAN BOOST screen.
• Use the down arrow to select the amount of time you want Fan Boost to run for (15, 30, 60
or 90 minutes), or to turn it OFF.
• Press OK.
• Press the Menu button repeatedly until you return to the Main Screen.
Fan Boost
OFF
15min
30min
60min
90min
The Main Screen
The wall panel normally displays the Main Screen, which shows:
• The current roof and house temperature (in the example below roof temperature is 25oC
and house is 25oC).
• Your “Set temperature” (see page 4 for details).
Page 3
If they are in use, the Main Screen will also show:
• The status of the Air warmer or Tempervent (if tted).
• The status of the Automatic summer ventilation functions (if tted).
• Whether the lter is due for replacement.
Note: If the LCD display appears dim, press any button on the keypad to activate the backlight.
Current house
temperature
Current roof air
temperature
Your ‘set’
temperature
Menu / On / O
button
Up arrow
button
Down arrow
button
OK button
Page 4
Set temp
20.5o

Advanced Functions
More advanced functions of your DVS system are accessed via the Menu button. These include:
• Fan speed • Heat Recovery mode
• Air warmer or Tempervent operation (if
tted)
• Automatic summer ventilation operation
(if tted)
• Heat Retention mode • Air transfer operation (if tted)
• Clock • Temperature history
• Replace lter • Diagnostics
Adjusting the fan speed
Your system has been congured so the airow and settings are individually calibrated to the
size of your home and will run at these settings automatically. However, you are able to easily
ne tune the fan speed to optimise condensation or climate control to better suit your needs.
Fan speed tuning allows you to adjust the fan speed to a level higher or lower than the pre-set
calibrated level (represented by the ‘0%’ setting).
To adjust the fan speed:
• Press the Menu button briey.
• Use the down arrow to select Fan settings and press OK.
• Use the down arrow to select Fan speed and press OK.
• Use the up or down arrow to change the fan speed (from -15% to +15%).
• Press OK to conrm the fan speed.
• Press the Menu button repeatedly until you return to the Main Screen.
Adjusting the Heat Retention Function
You can adjust the way your DVS system responds to situations where the roof air is colder
than the house temperature (winter nights). Heat retention comes into play when the system
senses that the room is warmer than the roof space, and slowing the system down will keep
the room temperature closer to the desired Set temperature. In the O position the Heat
retention function is o. At other levels of Heat retention the fan speed decreases in proportion
to the dierence between the roof temperature and the Set temperature. Selecting a higher
setting decreases the fan speed more quickly to a low level.
Note: A high Heat retention setting may compromise the ability of the DVS system to control
condensation.
• Press the Menu button briey.
• Use the down arrow to select Fan settings and press OK.
• Use the down arrow to select Heat retention and press OK.
• Use the up and down arrows to adjust the Heat retention tuning - from OFF
through to MAX.
• Note: The higher the setting (closer to MAX) the quicker the fan speed will
drop.
• Press OK to conrm your selection, then press the Menu button repeatedly
until you return to the Main Screen.
Page 5
Fan Speed
Allows you to ne tune
the fan speed to your
house and climate
+15%
0%
-15%
Heat Retention
Increasing this setting
reduces the fan speed
during winter months.
MAX
OFF
Adjusting the Heat Recovery Function
You can adjust the way your DVS system responds to situations where the roof air is hotter
than the house temperature (autumn, summer and spring days). Heat recovery comes into play
when the system senses that heat is available in the roof space that can be used to get closer
to the desired Set temp more quickly if the system speeds up. In the OFF position the Heat
recovery function is o. At other levels of Heat recovery, the fan speed increases in proportion
to the dierence between the roof temperature and the room temperature. Selecting a higher
setting increases the fan speed more quickly to a high level.
• Press the Menu button briey.
• Use the down arrow to select Fan settings and press OK.
• Use the down arrow to select Heat recovery and press OK.
• Use the up and down arrows to adjust the Heat recovery tuning - from OFF
through to MAX.
• Note: The higher the setting (closer to MAX) the quicker the fan speed will
increase.
• Press OK to conrm your selection, then press the Menu button repeatedly until
you return to the Main Screen.
Adjusting the Air warmer or Tempervent settings
Note: The Air warmer or Tempervent(s) will not function if the room set temperature has
already been achieved or the roof temperature is equal to or warmer than the room set
temperature.
The Air warmer or Tempervent is designed to pre-warm the air in the system before bringing it
into the house. It is designed to take the chill o incoming air during the cooler months, not to
warm your home like a central heating system. It can be set to work manually or automatically.
Note: This feature will only activate in the control system if it has been installed as an optional
extra.
• In Manual mode, you can set the Air warmer or Tempervent to be on for a
specied period of time, or o.
• In Automatic mode you can set the Air warmer or Tempervent to come on:
• at certain times (timer), or
• when the air in the roof falls below a specied temperature, or
• a combination of both (i.e. you can set the Air warmer or Tempervent to
come on when the air in the roof falls below the temperature you specify,
during the “On” part of the timer’s cycle).
Manual mode
To set the Air warmer or Tempervent to be on or o manually:
• Press the Menu button briey.
• Use the down arrow to select Air warmer or Tempervent and press OK.
• Use the down arrow to select Manual [0] and press OK.
• Use the up and down arrows to select the amount of time you want the Air
warmer or Tempervent to run for (30, 60, 90 or 120 minutes), or to turn it OFF.
• Press OK to conrm your selection, then press the Menu button repeatedly until
you return to the Main Screen.
Heat Recovery
Increasing this setting
raises the fan speed
on sunny cooler days.
MAX
OFF
Air Warmer
Manual [0]
Roof Temp
Timer
Temp & timer
Select the desired
operating mode. Only
one mode can be used
at any one time.
Manual Time Set
OFF
30min
60min
90min
120min
Air warmer runs for
one of the above times
and then turns off.

Automatic mode using the timer
To set the timer to switch the Air warmer or Tempervent on and o automatically at specied
times on specied days:
• Press the Menu button briey.
• Use the down arrow to select Air warmer and press OK.
• Use the down arrow to select Timer and press OK.
• Use the up and down arrows to select the timer that you want to programme
(Timer 1, 2, 3 or 4) and press OK.
Note: Timers are organised so that “On” times have priority over “O times”. For
example, if Timer 1 is set to be “O” when Timer 3 is set to be “On”, then Timer 3 will override
Timer 1 and the Air warmer or Tempervent will be on.
As timers are set by day as well as time no timer will work if its o time is set past 11:45 pm. Ie
to have the timer on from 5pm till 7 am the next morning set timer one from 17:00 – 23:45 and
timer two set from 00:00 – 07:00. The heater will turn o from 231:45 till midnight and then
turn back on until 7:00am
• Use the down arrow to select Days = and press OK.
• This takes you to the “Select days” screen.
• Select the days that you want this timer to apply to.
To do this:
• Use the down arrow to highlight the required day, and press OK to
change it to “On” (pressing OK again changes it back to “O”), and
• repeat until you have selected all the days you want this timer to apply to.
• Press the Menu button to return to the “Set timer #” screen.
• Use the down arrow to select “On time” and press OK. You will be taken to the
“SET TIME” screen.
• Use the up and down arrows to select the hour when you would like the timer
to switch the Air warmer or Tempervent ON, and press OK. (Note: Timers use 24
hour clock.)
• Use the up and down arrows to select the number of minutes past the hour (15,
30 or 45) when you would like the timer to switch the Air warmer or Tempervent ON, and
press OK. You will return to the “Set timer #” screen.
• Use the down arrow to select “O time” and press OK. You will be taken to the “SET TIME”
screen.
• Use the up and down arrows to select the hour when you would like the timer to
switch the Air warmer or Tempervent OFF, and press OK.
• Use the up and down arrows to select the number of minutes past the hour
(15, 30 or 45) when you would like the timer to switch the Air warmer or
Tempervent OFF, and press OK. You will return to the “Set timer #” screen.
• Press the Menu button to return to the “Timer setup” screen. From here you can
set further timers if required.
• When you are nished, press the Menu button repeatedly until you return to the
Main Screen.
Page 7
Timer Set Up
Timer 1 MTWTFSS
00:00 - 00:00
Timer 2 MTWTFSS
00:00 - 00:00
Timer 3 MTWTFSS
00:00 - 00:00
Timer 4 MTWTFSS
00:00 - 00:00
Automatic mode using the roof temperature
To set the Air warmer or Tempervent so that it switches on automatically when the air in the
roof drops below a specied temperature:
• Press the Menu button briey.
• Use the down arrow to select Air warmer or Tempervent and press OK.
• Use the down arrow to select Roof temp and press OK.
• Use the up and down arrows to set the temperature (range is 0oC to 25oC.
Factory default is 15oC) and press OK.
• If the temperature of the air in the roof falls below this temperature, the Air
warmer or Tempervent will switch on automatically.
• Press the Menu button repeatedly until you return to the Main Screen.
Automatic mode using both timer and roof air temperature
To set the Air warmer or Tempervent so that it switches on automatically when the air in the
roof drops below a specied temperature, and also switches on and o at the times you have
specied:
• Firstly, set the timer(s) as described on page 7 and return to the main screen.
• From the Main Screen, press the Menu button briey.
• Use the down arrow to select Air warmer or Tempervent and press OK.
• Use the down arrow to select Temp & timer and press OK.
• Set the roof air temperature (as described above) and press OK.
• Press the Menu button repeatedly until you return to the Main Screen.
Note: If you select Temp & timer, the Air warmer or Tempervent will only come on if:
• the air temperature in the roof falls below the temperature you have set, and
• it is during the “ON” part of the timer’s cycle.
Page 8
Set timer 1
Days = MTWTFSS
On time 00:00
Off time 00:00
Select days
Mon On
Tue Off
Wed Off
Thu Off
Fri Off
Sat Off
Sun Off
Set Time
Adjust hours:
01:00
Air warmer turns on
anytime the roof is
colder than this temp
Roof temp set
15.0o