MACH® Series
Gas-Fired Boiler
Installation
Page 19
Standby
Para
Info
0) Off, No Call for Heat
1) Purge
2) Ignition
3) Burner On CH
4) Burner On DHW
5) Check Airflow Switch
6) Boiler Off - Internal Set Point
reached, Call for Heat existing
7) Burner Off, CH Pump Delay on
8) Burner Off, DHW Pump Delay on
9b – Flashing, auto-reset error
A) Adjusting the 3 Way Valve
H) Manual High Fire
L) Manual Low Fire
1) Domestic Hot Water (DHW) Setpoint
2) DHW ON=1, OFF=0
3) CH ON=1, OFF=0
4) Comfort Heat (CH) Setpoint
** USE CODE MODE TO ACCESS **
Parameters 5-42
1) Outlet Water Temp
2) Inlet Water Temp
3) DHW Tank Temp
4) Outdoor Air Temp
5) Flue Gas Temp
6) Boiler Setpoint (CH or DHW)
7) Outlet Rate of Change
o
F/Sec
8) Inlet Rate of Change
o
F/Sec
9) DHW Rate of Change
o
F/Sec
A) 2
nd
Comfort Heat System
Press STEP
Press
MODE
Press
MODE
Press STEP
Press STEP
Moving Through the Control Modes
Press
MODE
Standby
Para
Info
0) Off, No Call for Heat
1) Purge
2) Ignition
3) Burner On CH
4) Burner On DHW
5) Check Airflow Switch
6) Boiler Off - Internal Set Point
reached, Call for Heat existing
7) Burner Off, CH Pump Delay on
8) Burner Off, DHW Pump Delay on
9b – Flashing, auto-reset error
A) Adjusting the 3 Way Valve
H) Manual High Fire
L) Manual Low Fire
1) Domestic Hot Water (DHW) Setpoint
2) DHW ON=1, OFF=0
3) CH ON=1, OFF=0
4) Comfort Heat (CH) Setpoint
** USE CODE MODE TO ACCESS **
Parameters 5-42
1) Outlet Water Temp
2) Inlet Water Temp
3) DHW Tank Temp
4) Outdoor Air Temp
5) Flue Gas Temp
6) Boiler Setpoint (CH or DHW)
7) Outlet Rate of Change
o
F/Sec
8) Inlet Rate of Change
o
F/Sec
9) DHW Rate of Change
o
F/Sec
A) 2
nd
Comfort Heat System
Press STEP
Press STEP
Press
MODE
Press
MODE
Press
MODE
Press
MODE
Press STEP
Press STEP
Press STEP
Press STEP
Moving Through the Control Modes
Press
MODE
Press
MODE
High Gas Pressure Switch
The boiler is furnished with a high pressure switch that
must be checked by closing the downstream gas cock
with the boiler off. When the boiler is started, it should
enter its normal starting cycle and fail on high gas
pressure when the automatic gas valves open. The
high gas pressure switch actuation is evident when a
manual reset lockout displaying
E 12
on the display
panel occurs. Upon re-opening the gas cock, the
E 12
indicator will remain on until the display panel is
manually reset.
3.12
I
NITIAL
A
DJUSTMENTS
3.12.1 Operating Temperature Controller
Display Panel (above) Operation of Control (below)
The MACH® C1500/C2000 boiler is equipped with a
combination combustion and temperature control.
This control monitors combustion and lighting of the
boiler, as well as maintaining temperature of the
supply water. The temperature control portion
modulates the boiler to maintain the desired outlet
temperature based on the selected operating
configuration.
3.12.1.1 Operation of the Control
The boiler is operated through the control/display
panel. The display has 3 modes of standard operating
menus. The modes are:
•
Standby mode will display (
Stby
)
•
Parameter mode will display (
PArA
)
•
Information mode will display (
InFo
)
At each level the keys and the display have different
functions. To ascertain which mode you are in, the
displayed information will be shown as indicated
under “display”.
Mode Description Display Example
Standby
(
Stby
)
Normal display
mode
1st digit
without
a dot
0 180
Parameter
(
PArA
)
Parameter
settings
1st digit
with
a dot
1
.
125
Information
(
InFo
)
display boiler
sensors
1st digit with a
blinking
dot*
1
*
180
CAUTION! The user should become thoroughly
familiar with the operation of the boiler and controls
before attempting to make any adjustments.
