Dry-Matic DM07D User manual

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 2019 1
Dry-Matic
with Digital Controller
•User Operating Instructions p2-5
•Installation Instructions p6-9
•Setup Instructions p10-15
•Error Codes p13
•Wiring Diagram p14
•Warranty p16
Digital controller

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 20192
Dry-Matic User Operation
SystemBenets
Congratulations on purchasing a Dry-Matic. Your Dry-Matic is designed to
provide whole home ventilation 24hrs per day 7 days per week. This provides
the benets of:
• Virtually eliminating condensation on windows and cold surfaces by forcing out
moist stale air and replacing with relatively dry air.
• Reducing airborne concentrations of irritants, asthma causing allergens and
smells by forcing out stale air and replacing it with fresh air.
• Heat recovery, recycles space heating energy lost to the roof space.
• Heat recovery, takes advantage of solar gain to the roof space on those sunny
winters’ days.
Dry-Matic digital controller shown in normal operating mode
Standard Unit DM01Ceiling Diffuser Dry-Matic Heated Unit
Mode
H
F
Heat Rec C
C
11
1618:30
Operating Mode
Attic Temperature TA
House Temperature TH
Time
Adjustment buttons
H displays when
heater operating
Bars indicate % of
heat capacity
F- Fan
Bars indicate fan
speed
Programming
Mode button
Safety Warnings
• Appliance not intended for use by persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge, unless they have been given supervision
or instruction concerning use of appliance by person responsible for their safety. Children should
be supervised to ensure they do not play with appliance.
• This unit requires installation by a registered electrician.

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 2019 3
User instructions continued on next pages
Factory Calibrated
(do not adjust)
AuxHeat Setpoint
(Factory set at 12ºC)
11
6
16
Sensor
Cat 5 Patch Lead
Cable Socket
Power Supply Transfomer
Fan Boost On for large House.
Note :- Discharge each
Capacitor to common before
operating the switch
Fuse
P)
)
E)From Switchboard
N)
P)
N)To Heater
E)
P)
N)To Fan
E)
)A
C Summer Vent Switch
M
Current Transformer
DM07C Attic Controller
Summer Vent Kit
Your Dry-Matic is designed to provide summer time ventilation when it is hot in the ceiling by providing a DM controller
override that operates fan at full speed(approxdouble the airflow ofDM in heat recovery mode)and drives a motorised
diverting branch that draws cool fresh air through the soffit from outside.
A
C
M
Vent switch typically mounted be-
side hall controller.
Motorised Diverting Branch
Air from Attic
Air from Out-
side
N
DM Attic Controller
DM auto Mode
Summer Vent Mode
Air into DM
DM attic control factory fitted with
link between A and C,remove and
replace with components shown.
P
C
1
2
C
1
2
769M
Factory Calibrated
(do not adjust)
AuxHeat Setpoint
(Factory set at 12ºC)
11
6
16
Sensor
Cat 5 Patch Lead
Cable Socket
Power Supply Transfomer
Fan Boost On for large House.
Note :- Discharge each
Capacitor to common before
operating the switch
Fuse
P)
)
E)From Switchboard
N)
P)
N)To Heater
E)
P)
N)To Fan
E)
)A
C Summer Vent Switch
M
Current Transformer
DM07C Attic Controller
Summer Vent Kit
Your Dry-Matic is designed to provide summer time ventilation when it is hot in the ceiling by providing a DM controller
override that operates fan at full speed(approxdouble the airflow ofDM in heat recovery mode)and drives a motorised
diverting branch that draws cool fresh air through the soffit from outside.
A
C
M
Vent switch typically mounted be-
side hall controller.
Motorised Diverting Branch
Air from Attic
Air from Out-
s
ide
N
DM Attic Controller
DM auto Mode
Summer Vent Mode
Air into DM
DM attic control factory fitted with
link between A and C,remove and
replace with components shown.
P
C
1
2
C
1
2
769M
DMFS
Filter Bag
(air intake in attic)
DMFB
Filter Box
Summer Vent Kit
Can divert intake from attic to cooler
outside air
DMFC Carbon Filter
(inside DMFB)
Cleaningthelters
Although the Dry-Matic is designed to run continuously for
years, the lters do need cleaning every 8 months or so for
optimal performance (clean at least yearly).
If the lter timer is activated, the hall controller display will start
ashing Dirty Filter to indicate it is time to clean the lters.
The white lter bag can be machine washed on gentle cycle
or hand washed - vacuum rst to remove excess dust.
Alternatively replace with a new one.
The carbon lter inside the lter box should be replaced every
year.
You may prefer to get a professional to climb into the attic
space to access the lters.
Dry-Matic Maintenance
Optional Summer Vent Kit
The Dry-Matic Summer Ventilation Kit is an optional add-on for Digital
Dry-Matics.
It can be added during installation or several years after installation.
The digital hall controller can be commissioned to control the motorised diverting
branch damper, directing air intake from the cooler outside air for summer
months.
Again, the air intake filter, and the inline ‘Sock’ will need cleaning as above.
Toggle Catch
Filter Sock
SE/SE Tube
inline Filter sock
SOCK - filter
Optional Heater
Some Dry-Matic units have been tted with a thermostatically controlled duct
heater that tempers the incoming air when it is cold in the attic.
Toresetashingdisplay‘DirtyFilter’
After factory reset or lter timer activated, go to User Menu
(c2. over page), follow instructions to select “Reset the Timer - Y”.

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 20194
Your Dry-Matic is essentially fully automatic in operation once set up/commissioned
to suit your home. The commissioning set up process ne tunes your Dry-Matic in
all or some of the following Modes:
a. Anti Condensation Mode - when the attic temperature is cooler than the house
temperature, the Fan operates at trickle speed to provide background ventilation
24/7.
b. Heat Recovery Mode - when attic temperature is warmer than house temperature
and house temp is less than “Inside reference temperature” of 20°C*, the fan
speed increases to warm the house (speed increases incrementally as the
temperature difference between house and attic increases to maximum fan
speed at 3°C** difference).
c. Heater Mode (heated models only) - if the attic is cold, <15°C** and the house temp is
below the reference temp of 20°C*, then the heater can operate to temper the
incoming fresh air (heat is proportional to the temperature difference over 3°C**).
The heater mode has the following features:
c1. A time clock feature (heated models only) accessible from the User Menu, that allows
the heater to be turned off / run (as required by thermostat) for programmed
hours** (eg. 7pm to 7am), / or continuously, or off. This allows the user to
operate the heater overnight, or all the time, or to shut heater down while away
for holidays, thereby providing a control of energy usage.
c2.To get to User Menu: press and hold mode button†, continue holding while
“EnteringMenus” appears & hold until “User Setup” shows. Use the up arrow to
change the options, Mode button to select.
• Heater enabled Y/N - if N, Heater will not operate
• Heater enabled Y/N - if Y, Options will show next:
• HeaterConnuous - if Y, Heater always enabled
• HeaterConnuous - if N, Heater enabled at night
• Reset Timer Y/N - if Y, Timer & display reset
NB. Night operating times can be changed in the
‘Set up Menu” on pp10-13
d. Cool Recovery Mode ** (default: disabled) - when house is hot (above ref temp)
and attic temp is less than 20°C* , the fan speed increases (speed is proportional
over the temperature difference to 3°C**) to cool the house down. This will not
operate if attic temp is below 15°C.
e. Auto Summer Shutdown - when house is hot and attic is very hot >27°C**, the
system shuts down until the attic temp decreases again.
f. Auto Winter Shutdown ** (default: disabled) - If attic temp is less than 2°C**, the
system shuts down until attic temp increases again.
g. FilterTimer- This provides an alarm (ashing display) when fan has operated for
240 days**, indicating that the lter should be cleaned and/or replaced (default:
enabled). Can be reset in User Menu (see c2 above).
Dry-Matic User Operating Instructions
Mode
H
F
Heat Rec C
C
11
1618:30
Press and hold Mode button†
for approx 5 seconds until
“User Setup” appears
Mode
H
F
Heat Rec C
C
11
1618:30
Mode
H
F
Heat Rec C
C
11
1618:30
Use up arrow to change options
Use Mode button to select option
†note: previous versions of the digital hall controller require you to
press and hold the mode button and up arrow together to get to
the user menu.
†note: previous versions of the digital hall controller require you to press and
hold the mode button and up arrow together to get to the user menu.

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 2019 5
h. Summer Vent Mode (If ‘Vent Kit’ tted) - The fan can be operated at full speed and the
duct diverting damper set to draw air from outside (cool side of the house) for
2, 4, 8, 12, 24hrs or ‘off’ by pressing the up arrow while controller is in normal
operating mode (not in any menu) (default: not tted**).
i. Time-clock - adjustment is accessed by pressing and holding the down arrow
until ‘Set Clock’ appears, after a moment the time appears, which can be adjusted
up or down using the up arrow to wind back and the down arrow to move
forwards. Press the Mode button to ‘enter’ the new setting.
* Reference Temperature (default 20°C) is set in the commissioning menu
** Default Setting – can be adjusted in the commissioning menu.
Please note: the above modes need to be set by the installing contractor.
Dry-Matic User Operating Instructions (continued)
TA - Attic temperature ( ^ shown in operating display)
TR- Inside reference temperature
TH - House temperature ( □ shown in operating display)
Mode
H
F
Heat Rec C
C
11
1618:30
Press and hold down arrow for 5
seconds until “Set Clock” appears
Mode
H
F
Heat Rec C
C
11
1618:30
Operating Mode
Attic Temperature TA
House Temperature TH
Time
Adjustment buttons
H displays when
heater operating
Bars indicate % of
heat capacity
F- Fan
Bars indicate fan
speed
Programming
Mode button
Dry-Matic digital controller shown in normal operating mode
†note: previous versions of the digital hall controller require you to
press and hold the mode button and up arrow together to get to
the user menu.

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 20196
It is recommended these units are installed by a preferred installer, please
contact us for a list in your area. Installation instructions are a guide only.
All electrical connections are subject to NZ law.
Pre-Installation checks
Before starting the installation, check the site & establish the best position/s of
the following components:
Diffuser For most small to medium sized homes a single diffuser is usually all that
is necessary. It is recommended this be installed into a hallway that is common
to most rooms in the home. Installation of the main diffuser into the living /
dining area is not recommended.
Unit The Unit comprises of the Fan, Heater (if supplied) and Filter box. It is
important to install the Unit so that it is as high as possible in the roof space,
this is to maximize the benefit of any thermal gain. It also keeps the fan inlet
air above dust which may come from the roof insulation. IMPORTANT: The
unit must be installed in a perfectly horizontal position to ensure correct heater
operation.
Attic Controller Is to be installed at the same level as the inlet to the fan, so as to
best measure the inlet air condition (temperature) of the unit. The attic controller
must be installed vertically, with the pack glands downwards. The attic
controller can be fixed to the timber framing in the roof space.
Hall Controller Hall controller is to be installed in the house at least 3m from the
diffuser but in the same area, approx. 1.5m above the floor. The hall controller
should not be installed on an external wall, in a living / dining area or in the
immediate vicinity of a heater or heat pump outlet. This is so that the Hall
Controller’s built in temperature sensor is not affected by outside air temperature
or heating, and should best measure average house temperatures.
Ducting Installation of ducting should allow for a full stretch and a smooth sweep
onto the rear of the diffuser. This will have a marked effect on the effective
operation of the unit air flow & attenuation of fan noise.
Installation Procedure
Based on the above criteria:
1.FitDiffuser Before cutting hole for diffuser, check that it will clear ceiling
joists and roof structure. Use circle template to cut correct sized hole in the
ceiling. Attach duct to grille, taping the centre duct sleeve to the grille spigot
then separately taping the insulation/outer to the spigot. Feed ducting through
the hole and clip diffuser in place using the spring clips. Ensure grille has a
minimum gap of 16mm between inner disk and outer collar.
Dry-Matic Installation Instructions

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 2019 7
2. Assembly of Unit It is suggested that this is done in a clear space on the
floor.
FAN: Mount fan brackets to side of fan.
HEATER (on heated models): Fit to inlet of fan using 4 screws provided
(note airflow direction for fan is shown by an arrow on the terminal
cover). Ensure airflow direction arrow on heater is the same as
direction on fan, ensure heater is mounted so marked top is installed
upright. Ensure heater is level.
FILTER BOX: Fit to heater (on heated models), or fit to the fan using the
supplied collar, so that the hanging bracket is on the heater/fan inlet
side. Ensure airflow direction arrow on filter is same as fan.
PRE FILTER: Fit white pre filter bag to inlet of filter box.
3. Pre Wiring Using supplied flying leads, connect attic control unit to fan
and heater (on heated models). Check wiring diagrams on components
carefully.
4. Installing in Attic Lift assembled unit into attic space. Fit supplied
cup hooks (x2) to roof structure. Clip supplied bungies (x3) to the three
mounting points on assembled unit. Lift unit into position and hook other
end of bungy cords over cup hooks. Attach duct to fan outlet, taping core
and insulation/outer as before. Adjust length of bungies so unit is level and
tighten cable ties to lock unit into position.
5. Mount Attic and Hall Controllers Run supplied cat 5 patch lead to hall
controller position (as above), attach to hall controller and attic controller.
6. Power Supply Connect a power supply to attic controller isolating switch
(by registered electrician).
Commission the unit
7. Set up the unit using the hall controller, as per commisioning instructions
pp10-13
8. Check Operation check the unit is operating correctly, as for user
operating instructions pp4-5.
Dry-Matic Installation Instructions (continued)
Smooth-AirProductsLtd
See next page
for installation
schematic

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 20198
Smooth-AirProductsLtd
Dry-Matic Installation Schematic

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 2019 9
Smooth-AirProductsLtd
Dry-Matic Installation Schematic

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 201910
Dry-Matic Set up Commissioning Instructions
It is recommended commissioning is performed by a professional technician.
Before commissioning, the installation must be discussed with the client so that the
modes can be set as for the User Operation Instructions, and include any additional
equipment that has been installed.
Typical settings for the following Models:
DM01D Heater Kit Y/N? (as below) Change to N
- This removes the heater options from all Menus
DM07D Use Default settings unless Fan Max needs to be adjusted.
DM15D Use default settings unless client would like Fan Speed Heat increased.
Dry-Matic digital controller shown in normal operating mode
Commissioning Instructions
Commission the unit using the “Setup Menu”, which
is accessible by pressing and holding the up and
down buttons for 3-5 seconds until “SetupMenu” is
displayed. Menu can be scrolled through by pressing
the mode button. If no button is pressed for 15
seconds, unit will revert to operating mode – therefore
it is recommended that any changes are planned in
advance. Use form on p13 to pre-plan settings.
Hold mode buton to cycle through options quickly.
Available modes are also described in the User
Operating Instructions pp2-5.
Press and hold up and down
arrows together for 5 seconds
until “SetupMenu” appears
Mode
H
F
Heat Rec C
C
11
1618:30
Mode
H
F
Heat Rec C
C
11
1618:30
Use up arrow to change options
Use Mode button to select option
Mode
H
F
Heat Rec C
C
11
1618:30
Use up and down arrows to
change settings
Mode
H
F
Heat Rec C
C
11
1618:30
Operating Mode
Attic Temperature TA
House Temperature TH
Time
Parameter adjusting
buttons
H displays when
heater operating
Bars indicate % of
heat capacity
F- Fan
Bars indicate fan
speed
Programming
Mode button
Mode
H
F
Heat Rec C
C
11
1618:30
Mode
H
F
Heat Rec C
C
11
1618:30

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 2019 11
Menu sequence is as follows. Press up and down arrow together to get to SetupMenu.
Press up (or down) button to change setting, then press Mode to enter desired setting.
1. Heater Kit Y/N (default Y) For DM01 press up arrow to change to N - this will remove
heater options from all menus (heater options in orange). Press Mode to select.
1.2 Heater Times (option only for heated models)
> display then changes to show the current settings default:
Heater on 00:00
   Heatero00
> display then changes again to Change times Y/N (default N)
Select desired ‘Heater ON’ time in Hours:Mins using up or down arrow, press mode to select
Select desired ‘Heater OFF’ time in Hours:Mins using up or down arrow, press mode to select.
1.3 Heater Test Y/N (default N) (option only for heated models)
2. Max Fan Speed (default 35%) range 35-60
Provides the ability to adjust fan Hi speed to suit the size of the house. We recommend:
35% for houses up to 150m2
40% for houses up to 200m2 (requires at least a second grille)
45% for houses up to 250m2 (requires at least a second grille)
50% for houses up to 300m2 (requires at least a second grille)
For houses larger than this we recommend additional Dry-Matic units.
3. Min Fan Speed (default 25%) range 20-35
Provides the ability to adjust fan minimum speed, we recommend a setting of 25% for this.
4. Fan Speed Heat (default 32%) range 30-45 (option only for heated models)
This must be set to ensure that minimum speed is sufcient to ensure heater sail switch
operates (with semi dirty lter) and provides sufcient airow to the number of outlets
installed, balanced against too much airow that will limit temperature rise through the
heater.
- Adjustment range 30-45%
- At default setting, nominal temp rise is 9°C for DM07
- At default setting, nominal temp rise is 18°C for DM15. We recommend Fan Speed Heat
set at 30% for this model.
- If “heater fault” appears only briey, this is normal
5. Winter mode Y/N (default Y) - Winter shutdown mode (up button to change to Y, Mode to
enter). This setting is available for particularly cold locations, and is mainly when house is
not heated (house unoccupied for periods of days or weeks), as in these conditions, when
moist outside air is introduced, in some cases it can cause worse air quality, resulting in
condensation.
If ‘Y’: if attic temp (TA) is less than 0°C (default), the system shuts down until TAincreases
again. If ‘Y’, next menu is:
5.1 S/down temp? (default 0°C, range: -2° to +2°C ) (up & down arrows to change, mode to
enter).
6. Summer-Vent Inst (default N) (up button to change to Y, mode to enter)
If ‘Y’ & summer vent kit is installed, the fan can be operated at full speed and the duct
diverting damper set to draw air from outside (cool side of the house) for 2, 4, 8, 12,
24hrs or ‘off’, by pressing the up arrow when in operating mode (not in any menu).
Dry-Matic Set up Commissioning Instructions (continued)
continued on next page
Note - if heater faults during commissioning,
please check heater is installed level.

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 201912
7. Cool Recover Y/N (default N) (up button to change, mode to enter)
This mode provides ventilation when house is warm and air is cooler outside. It is
manual, as there are times when house has been heated, but is cool outside, hence the
limit if the attic temperature is below 15°C.
If ‘Y’: When the house (TH) is hot (above the ‘I/side Ref Temp’: TR, default 20°C), and
attic temperature (‘O/side Ref Temp’: TA) is less than TR (TA<TH>TR), the fan speed
increases. Fan speed is proportional over the temperature difference to 3°C to cool
the house down (the 3°C is changeable using ‘Heat Reco P/band’). This will not
operate if attic temp is below 15°C (changeable using ‘O/side Ref Temp’: TA).
8. Filter Timer on (default Y) - Sets a timer to count how many days since last lter change.
9. Filter Alm days (default 240) range 150-240 - Filter Alarm - Display will ash ‘Swap Fltr’
when the lter is due to be changed (see c2 on p4 to reset).
10. I/side Ref Temp - Hall reference temperature TR (default 20°C) - recommend leave set at
20° C
11. O/side Ref Temp - Attic reference temperature TA (default 15°C) - recommend leave set at
15°C
12. O/side Deg ose- Attic Degree Offset (default 0) Provides site calibration of attic temp
display if required. eg use -2 if controller reading 2°C too high.
13. I/side Deg Ose- Hall Degree Offset (default 0) Provides site calibration of house display if
required. eg use -2 if controller reading 2°C too high.
14. Heat P/band (default 3°) - range 1-7°C. (option only for heated models)
At a proportional band of 3°C, heater will start to operate at attic temp 15°C and is fully
on when temperature gets down to 12°C. A smaller proportional band will bring heater
on over a smaller temperature range.
15. Heat Reco P/band (default 3) - Heat Recovery Proportional Band.
- With proportional band of 3°C, the fan starts to speed up when the attic is 1°C warmer
than the house. Fan speed is at max when the attic temperature gets to 3°C above
house temperature (provided the house is below the reference temperature TR,
default 20°C).
16. Cool Reco P/band (default 3) - Cool Recovery Power Band.
- With proportional band of 3°C, the fan starts to speed up when the attic is 1°C cooler
than the house and is at maximum speed when the attic temperature gets to 3°C
below the house temperature (provided house is above the reference temperature TR
(default 20°C), cool recovery is enabled and attic is above TA (default 15°C).
17. Summ Temp s/down (default 27°C) range 25-35°C. Auto Summer Shutdown. - When
the house is hot and the attic is very hot (TA>27°C), the system shuts down until TA
decreases again.
TA Attic temperature
TH Hall temperature
TR Reference temperature
Dry-Matic Commissioning Instructions (continued)
Use up arrow to change options
Use Mode button to select option
Use up and down arrows to
change settings
18. FactoryReset (default N) (up button to change,
mode to enter) Resets everything (including
heater on & off times - back to 7pm-7am).
Mode
H
F
Heat Rec C
C
11
1618:30
Mode
H
F
Heat Rec C
C
11
1618:30
Mode
H
F
Heat Rec C
C
11
1618:30

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 2019 13
Heater option not available for HEXdigi-NH
Manufacturer 0800 Smooth-Air
0800 766 684
1. Heater Kit Y/N (Y)
Heater ON time: ........ : ........ (19:00)
Heater OFF time: ........ : ........ (07:00)
2. MaxFanSpeed  .......... % (35%)
3. MinFanSpeed .......... % (25%)
4. FanSpeedHeat .......... % (32%)
5. Winter Mode Y/N (Y)
If Y, shut down temp: .......... °C (0°)
6. Summer-Vent Kit installed? Y/N (N)
7. Cool Recover Y/N (N)
8. FilterTimeron Y/N (Y)
9. FilterAlmdays(If lter timer Y) .......... days (240)
10. I/Side Ref Temp .......... °C (20°)
11. O/Side Ref Temp .......... °C (15°)
12. O/Side Degree Offset .......... °C (0°)
13. I/Side Degree Offset .......... °C (0°)
14. Heat P/band .......... °C (3°)
15. Heat Reco P/band .......... °C (3°)
16. Cool Reco P/band .......... °C (3°)
17. Summer Temp S/down .......... °C Yes (27°)
18. User On/Off Y/N (N)
19. FactoryReset  Y/N (N)
Error Codes:
• Swap Fltr Filter due for change
• Timer Err Filter timer is misbehaving - reset timer (see p4-c2)
• Heater Fault No heater current owing, check circuit
• Heater Err Fan speed is too low in the software
• Fan sanity check failed Recovery and heater fan error
• Stat err Display status problem
Heater option not available for DM01
Heater option not available for DM01
Heater option not available for DM01
Default setting
Installer Details:
Installer’ssetting
Installer’srecommendedsettingsforyourDry-Matic:

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 201914
PN P1N P3
NNCC
240VAC MOTOR HEAT Vent
Circuit Board
Patch lead socket
Isolator
Switch.
NO
Heat Sensor Plug.
Grey (HT15D Only)
Green
Blue
Brown
Grey
Mode
Dry-Matic
Fan
Diverting
Branch
Motor
Heater
1
2
3
N P
PN
If damper operates in "reverse"
change CW<>CCW switch on
motor body to correct.
For digital controller, mount attic box
with pack glands downwards
Heater option not
available for DM01
Supplied cable for the
duct heater for DM07D
is three core. DM15D
is four core - wire to
earth, P3 & N. Note
wiring connection details
supplied with heater.
Cable for electrical
supply is three core
and pre-wired to
the attic controller.
Dry-Matic Wiring Diagram
Attic Controller
(for DM15D only)
Heater (for DM07D & DM15D)
Mode
H
F
Heat Rec C
C
11
1618:30
Supplied cable for
the fan unit is two
core - wire to N & P1
N P
Fanunit
Optional
Summer Vent kit
1
2
3
PN P1N P3
NNCC
240VAC MOTOR HEAT Vent
Circuit Board
Patch lead socket
Isolator
Switch.
NO
Heat Sensor Plug.
Grey (HT15D Only)
Green
Blue
Brown
Grey
Mode
Dry-Matic
Fan
Diverting
Branch
Motor
Heater
1
2
3
N P
PN
If damper operates in "reverse"
change CW<>CCW switch on
motor body to correct.
Diverting
branch motor
Hall controller
For heated units only
Heat
sensor
For summer vent kit, ensure the heat
sensor is in duct, upstream of lter box.
(DM15 only)

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 2019 15
Temperature
sensor wire
plugs in here
Cat5 cable to digital
wall controller
For digital controller, mount
vertically with pack glands
downwards.
Attic Controller
The attic controller must be mounted vertically with pack glands downwards.
Easy plug-in connection
between attic and hall
controllers
and comes
through here Mount vertically with pack
glands downwards
to fan
to heater (for
DM07 & DM15)
Electrical
supply
Isolator
switch

DM - Operating Instructions, Installation Instructions, Wiring diagrams Version 3.1.765 August 201916
Conditional Guarantee
Dry-Matic Warranty Period
3 years from date of rst retail purchase (see warranty)
Guarantee Period
1 year money back conditional guarantee
The goods carry a one year money back conditional guarantee, effective from the
installation date. The purchaser agrees to trial the unit for a minimum of 90 days
during colder weather prior to activating the money back guarantee.
The vendor agrees to remove the goods (if guarantee is applicable) under the
money back guarantee offer, if requested by the purchaser within the guarantee
period. Removal means the Vendor will remove the goods at no charge for
the removal work, and refund the cost of the goods, (as details above). Any
vent or duct lling a hole or cavity in the ceiling that was installed as part of the
installation of the goods will be left in place. The money back guarantee does not
cover separate installation costs or the repair of the hole used by the unit. The
cost for the repair of ceiling holes or other ventilation holes (if required) is either
deductible from the refund or an additional cost payable by the Purchaser.
WARRANTY RETURN
Upon installation, please send to: Smooth-Air, PO Box 8358, Christchurch
I have read, understood and accept the terms of the conditional guarantee
Purchaser: ___________________________________ ________________________
Address: _______________________________________________________________
Description: Dry-Matic DM ________________________________________________
Date of installation: ________________________________________________________
Purchased from: __________________________________________________________
Installed by: _____________________________________________________________
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