18
CAHA Midi
Installation, Usage and Maintenance Instructions
TECHNICI
AN MENU
SUBMENU 1
SUBMENU 2
SUBMENU 3
SUBMENU 4
NO
TES
Lockout hist
or
y
Show a list of r
ecent err
ors. Hitting OK on the highlighted err
or will open
scr
eens that contain details on boiler status when err
or occurr
ed
1 Adv
anced CH settings
Heating installer adv
anced settings
1 CH power set
Set power of boiler in CH mode
1 Maximum power
Set % of boiler maximum power in CH mode
2 Minimum power
Set % of boiler minimum power in CH mode
2 CH temperatur
es
Set (selecting OK) and show CH temperatur
es
1 Absolute max temp
Set CH absolute max temperatur
e (CH temperatur
e boiler settings will ne
ver
ex
ceed).
DO NO
T EX
CEED 90°C
2 CH maximum set point
Determine higher boundar
y of CH setpoint
3 CH minimum set point
Determine lower boundar
y of CH setpoint
4 CH set point hyster
esis
Set CH setpoint hyster
esis (temperatur
e abo
ve setpoint at which boiler will
be switched off
)
3 O
TC parameters
Set the O
TC parameters
1 Outside temp for max CH
Define external temperatur
e at which O
TC will set maximum CH setpoint
2 Outside temp for min CH
Define external temperatur
e at which O
TC will set the minimum CH setpoint
3 Outside temp for CH off
Set the external temperatur
e at which Heat demand is r
emo
ved . If set OFF
heat demand will ne
ver be r
emo
ved.b
y contr
oller (Only b
y r
emo
ving R
T or
bridge between terminal strip C2:1,2)
4 O
TC set point table
Show in a table the link between external temperatur
e and actual setpoint
determined b
y the O
TC parameter selection
5 O
TC cur
ve
Show in a cur
ve the link between external temperatur
e and actual setpoint
determined b
y the O
TC parameter selection
4 CH pump settings
Set pump usage r
elated parameters
1 post pump time
Set the CH pump o
verrun time.
5 CH anti cy
cling
timer
Set the ant cy
cling timer (minimum time between boiler goes off till next
ignition)
6 CH r
equest type
Allow selection of diff
er
ent CH r
equests:
Only O
TC
Select O
TC: outdoor T
emperatur
e contr
oller 3)
Room T
stat
Select R
T/O
T: Room Thermostat or OpenTherm
0-10V Signal [%]
Select 0-10V
dc input for P
ower mode 3)
0-10V Signal[SP]
Select 0-10V
dc input for setpoint mode 3)
2 Adv
anced DHW settings
Domestic hot water adv
anced settings
1 DHW power
Set power of boiler in DHW mode
1 Maximum power
Set % of boiler maximum power in DHW mode
2 Minimum power
Set % of boiler minimum power in DHW mode
2 DHW temperatur
es
Set (selecting OK) and show DHW temperatur
es
2 DHW temperatur
es
Set (selecting OK) and show DHW temperatur
es
1 St
orage temperatur
e set
point
Set Flow temperatur
e during DHW mode when DHW done via a thermostat
(Switch)
2 Boiler temperatur
e set
point
Set DHW temperatur
e setpoint when DHW done with temperatur
e sensor