Wittus MCZ Installation guide

MCZ Pellet Stoves
Technical Training

Technical Training Topics
Installation
First Lighting
Comfort Air® Remote Control
Black LCD Panel
Active System Operating Parameters
Emergency Panel
Black LCD Panel Navigation
Alarms
Trouble Shooting
Re-Coding the Motherboard
Scheduled Maintenance
Cleaning Tips
End of the Season

Installation Basics
Venting 3” venting – over 20’ 4” is recommended.
We suggest 5’ of vertical pipe at a minimum to
insure draft in case of power outage.
Surge Protection Plug the stove power cord into a good quality surge
protector. The stoves are well fused including
2 - 3.15 amp fuses in the power inlet box on the
back of the stove.
Make Up Air In sleeping rooms or in manufactured homes outside
air is required. Outside air or make up air may be
needed in any tight building to insure proper
combustion.
Air Filter The air filter that is supplied with the stove must be
installed. If the stove is connected to outside air the
filter should be installed at the end of the intake. It is
important to keep this filter clean.

First Lighting
Set the Date & Time
Instructions for setting up the date, time, & programming on the black panel or remote are included in the
stove manual. A simplified version in provided in the Quick Start Guide (available at wittus.com).
Priming the burn pot
Place 1 handful of pellets in the burn pot for the initial firing. This allows time for the auger to prime and
maintain combustion. If the stove goes into Alarm 01 (failure to ignite) you must reset the stove and try
again. Too much fuel in the burn pot can also be a problem.
Start Up Phase
In the start up phase the stove will run at power level 3 with the fan speed at level 3. Adjustments to the
power or fan speed can not be made in the start up phase which can take between 10 to 15 minutes.
When the stove starts automatically in thermostat or program mode the fan speed goes to its previous
setting after the start up phase.
Curing the paint
As with most pellet stoves, it will take several hours to cure the paint. The paint on the stove will be soft
until cured. To avoid finger prints do not touch the stove until the paint has had a chance to fully cure. It is
advisable to ventilate the room.
Alarms
An alarm indicates a problem with the stove or flue system. An alarm will make a beeping sound for 10
minutes and stop. After that the Alarm code will appear on the control panel. Most alarms will shut off
the stove. If an alarm is triggered the control panel must be re-set by switching the stove off for 10
seconds. Otherwise the stove will not run.

Comfort Air® Remote Control
ON/OFF button
By pressing this button in combination
with the MENU button (at right)
you can set or adjust the internal clock
Button to select operating mode:
MANUAL – AUTOMATIC – ECO-STOP
Hold for 5 seconds with stove off to swtich from
Celsius to Farenheight
Button for scrolling up or down to adjust
flame power, fan, temperature and to
set the SLEEP and the PROGRAM MODES
MENU button
Lets you access the setting menus to adjust the
flame, fan, SLEEP and TIMER

Black LCD Panel
The LCD control panel on the
Star and Ego is the control and
data center for the stove.
The panel will display the current
status of the stove. i.e. Start-up or
Auto
The Thermostat remote control is
not included on the stoves that
have the LED control panel but a
small IR remote is available as an
option.
This remote adjusts the fan and
fire only.

EMERGENCY PANEL
The Emergency Panel on the Comfort Air stoves and
the Black Panel on the Ego & Star are a window into
the detailed functioning of the stoves. We will start by
going over the Emergency Panel as the Black Panel is
similar but easier.
Some functions of the panel:
View the current operating status of individual
components
Adjust the feed rate
De-activate and Re-activate the air flow sensor
See prompts for maintenance or service
View operating hours of the stove
Re-sinc a Remote Control Handset
Set up a new Motherboard

EMERGENCY PANEL
LEDS
Flashing green = Stove starting up
Steady green = Stove on
Flashing red = Stove shutting down or in alarm condition.
Steady red = Stove off
ON-REMOTE-OFF SELECTOR
ON = The stove turns on WITHOUT the remote control.
REMOTE = The stove is integrally controlled by the REMOTE
CONTROL
OFF = The stove turns off WITHOUT the aid of the remote
control. Also turn the selector to OFF to cancel an Alarm code.
MAX-MED-MIN SELECTOR
This selector sets the power of the flame when the stove is used
without the remote control.
•The minimum power corresponds to speed 1 (P-1)
•The medium power corresponds to speed 3 (P-3)
•The maximum power corresponds to speed 5 (P-5)
•The Distribution fan speed will be equal to the flame setting.

With the TEST button it is very easy to read the total operating
hours of the stove, air flow, and flue temperature.
PRESS ONCE
With the switch at MIN to view the number of hours the
stove has been in operation:
000-145=145 operating hours
001-145=1145 hours
With the switch at MED you can read the RPM of the
combustion blower and the litre/minute of fresh air that is
passing through the air sensor:
195 = 195 L/min entering the stove
230 = 2300 rpm of the Comb. Blower
With the switch at MAX to view the temperature reading of
the flue temperature sensor:
132 = 132°C
EMERGENCY PANEL DETAILS

Operating Parameters
The ACTIVE SYSTEM stoves are controlled by operating parameters that determine the
product's response in the various conditions.
ACTIVE SYSTEM PARAMETERS CAN NOT BE CHANGED but knowing what they are can be very
useful to assess whether or not the stove is operating correctly.
The most important information to pay attention to, is the air flow - the liters/minute read by the air flow
sensor and the RPM’s of the combustion fan.
The speed of the combustion fan changes continuously in order to keep the air flow as close as possible to
the set parameters.
The combustion fan has its own reference value. To determine whether the stove is working correctly or if an
anomaly has occurred you check the current RPM’s against the reference value given in the service manual.
Example: At power 3, in a EGO stove, the flow sensor needs 160 L/min as minimum intake, the combustion
blower will adjust to guarantee this amount of incoming air.
–In this case the combustion blower has a reference value of 1,600 rpm.
–With normal installation and fuel quality, in a clean stove, the running values will remain close to the
reference value with a tolerance of ~ 20 rpm.
–EXAMPLE: If you check the stove & the combustion blower is spinning 400 RMP higher than the reference
value for the current power level, this is a clear signal that there is some problem with air flow. This could be
caused by a dirty burn pot or flue pipe. It could also be caused by negative pressure in the room. The stove
will adjust up to a set point and then trigger an alarm code if it exceeds the set parameters.
–If the combustion blower hits the alarm threshold - 2,500 rpm and is unable to supply the 160 L/min
required for 20 consecutive minutes, the stove triggers an alarm A06 (abnormal ratio between the number
of revolutions of the fan and the flow of incoming combustion air). The stove will shut down and display
A06.

EGO - STAR AIR version
Example of Perameters Chart in the Service Manual
Release Software 0503 0504
Revolution and flow parameters Values Values Unit
Air flow in load wood phase 230 230 lpm
Minimum value of revolutions of the smoke fan in load wood phase 1900 1900 rpm
Air flow in fire on phase 180 180 lpm
Minimum value of revolutions of the smoke fan in fire on phase 1500 1500 rpm
Air flow in power 1 150 150 lpm
Minimum value of revolutions of the smoke fan in power 1 1300 1300 rpm
Air flow in power 2 155 155 lpm
Minimum value of revolutions of the smoke fan in power 2 1450 1450 rpm
Air flow in power 3 160 160 lpm
Minimum value of revolutions of the smoke fan in power 3 1600 1600 rpm
Air flow in power 4 165 165 lpm
Minimum value of revolutions of the smoke fan in power 4 1750 1750 rpm
Air flow in power 5 170 170 lpm
Minimum value of revolutions of the smoke fan in power 5 1900 1900 rpm
Air flow during thermal shutdown 150 150 lpm
Minimum value of revolutions during shutdown 2500 2500 rpm
Air flow during grate cleaning 350 350 lpm
Minimum value of revolutions of smoke fan during grate cleaning 2500 2500 rpm
Air flow during pre-lighting phase. 150 150 lpm
Minimum value of revolutions during pre-lighting 2500 2500 rpm
Minimum revolutions to detect a flow 500 500 rpm
Minimum operating flow 120 90 lpm
Rev/flow ratio to detect anomalies 20 27
Smoke temperature parameters Unit
Minimum smoke temperature to consider the stove on 50 50 °C
Maximum smoke temperature to consider the stove off 45 45 °C
Temperature increase when lighting flame LW when hot 5 5 °C
Minimum smoke temperature to start up the exchanger. 60 60 °C
Smoke temperature to reduce the exchanger to minimum in ST. 100 100 °C
Maximum smoke temperature to shut down the exchanger. 55 55 °C
Pre-alarm threshold for smoke temperature 180 180 °C
Alarm threshold for smoke temperature 200 200 °C
Hysteresis for smoke temperature alarm thresholds 5 5 °C

Using the TEST button you can modify certain
functions of the stove:
To Adjust Feed –
HOLD THE TEST BUTTON DOWN FOR 5
SECONDS
The display will show 0: by pressing the right button with
a sharp instrument You can increase or decrease the
quantity of pellets using the following scale:
-3 = -30%
-2 = -20%
-1 = -10%
0 = No modification
1 = +5%
2 = +10%
EMERGENCY PANEL ADJUSTMENTS

To de-activate the Air Flow sensor:
You may need to de-activate the air sensor in the event that it
is broken and you need to keep the stove working. With the
air sensor disactivated the combustion blower runs at a fixed
rate.
HOLD DOWN THE TEST BUTTON FOR 10 SECONDS
The display will show ON
Press the button to switch between ON or OFF
To re-set the counter or clear maintenance
warnings:
HOLD DOWN THE TEST BUTTON FOR 15 SECONDS
The display will show SEr (service)
Press the button to re-set
The Values are: SEr = Maintenance needed
000 = Re-set the counter
EMERGENCY PANEL ADJUSTMENTS

Re-syncing a Remote Control
When the stove is off turn switch to
Remote position
Press the button
Three lines appear - - -
Press the Off/On Button on the remote
Three beeps from the Emergency panel
indicate that the Sync was successsful
EMERGENCY PANEL TOOLS

Replacing the Motherboard and
Programming the Software
Turn the stove off and disconnect the power
Remove and replace the motherboard by unscrewing the 3
screws on the mounting panel on the back of the stove
Re-connect power and switch the stove on
Within the first 10 seconds (while the Green & Red lights
flash) press and hold the button.
Press the test button to select the correct software
01 = Ego – Star
02 = Suite Club Musa Toba – Air
03 = Suite Club Musa – Multi–Air
Release the button
Off will appear on the screen meaning the software has
loaded correctly
If 000 still appears, go through the steps again
EMERGENCY PANEL TOOLS

Navigating the Black LCD Panel
The LCD control panel on the Star
and Ego has all the functions for the
remote and the emergency panel
combined.
The panel will display the current
status of the stove i.e. Off, Start-up,
Manual, Auto, Auto Eco
Using the 4 buttons it is very simple to
scroll through the menus & set the
desired operational settings.
Illustration of the display in the adjustment phase
Illustration of the display in stand-by

Black Panel Menu Items
The Menus & Sub-Menus
DATE and TIME
To set the time.
TIMER
To set the set back programs already saved in the
motherboard. The programs are identical to those
saved in the ACTIVE SYSTEM remote control.
SLEEP
Sets stove to turn off by setting a countdown timer
in minutes or hours.
INFO
Real time details concerning the state of the stove
such as:
•The temperature of the smoke sensor
•The RPM of the combustion blower
•The liters/minute detected by the flow sensor
•The working hours
•Voltage to the distribution fan
SETTINGS
To Set preferences or functions of the
stove such as:
•The LANGUAGE of the display
•Set the ECO-STOP
•Modify the TONES
•Modify the pellet recipe
•Activate external thermostat
•Activate pellet feed screw (prime)
•°C / °F
•Enter the TECHNICAL MENU
Note:
Pressing the on/off button, the display
returns to the initial display.

Entering the Technical Menu
The Technical Menu is a password
protected area where the technician can
adjust the following:
Re-set hours of operation (after cleaning)
De-activate the air flow sensor
Activate the small remote
Re sync a new motherboard
We will walk through 2 examples:
De-activating the Air Flow Sensor
Press the button in TOP RIGHT to access the
menu
Scroll with the two bottom buttons until you
reach the SETTINGS menu
Press the button next to SET
Scroll with the two bottom buttons to
TECHNICAL MENU
Press SET,and insert the password C 93
with the bottom keys, confirming with OK
first the letter and then the number
Confirm by pressing SET
Scroll through the various menus to AIR
FLOW SENSOR
Confirm pressing SET
Select OFF or ON with the lower keys
Confirm by pressing SET

Technical Menu Example 2
Replacing the Motherboard
As before Scroll through the various menus, to
TECHNICAL MENU
Press SET,and insert the password C 93 with the
bottom keys, confirming with OK first the letter and
then the number
Confirm by pressing SET
Scroll through the various menus to STOVE TYPE
On the display the 00 appears
Confirm by pressing SET
Modify the value with the lower buttons.
Confirm pressing the SET
The software codes are:
01 = Ego – Star AIR
02 = Suite – Club – Musa AIR
03 = Suite – Club – Musa COMFORT AIR

ALARMS – Emergency Panel
Along with enabling operation of the stove in an emergency
The emergency panel is the window for system diagnosis.
If the Motherboard detects a problem it will display an Alarm code
on the panel. By consulting the table in the service manual we can
identify the type of problem the stove is reporting.
The alarm codes start with the letter A - Alarm followed by a two
digit number (ie. A01 = Stove did not light)
An alarm is signaled by a beeping tone that will last for 10
minutes. The panel will continue to display the alarm code until it is
re-set.
USE THE EMERGENCY CONTROL PANEL TO CANCEL THE ALARM
SHOWN AND RE-START THE STOVE:
Switch top button to OFF for 10 seconds or until the display shows OFF