34
Matrix Installation and Operation Instructions
9.2 Operation and Set-up
The Matrix employs a pneumatic modulation system. This modulation system increases or decreases the velocity of the combustion
blower, to meet the demand for heating. The gas valve senses this change in blower pressure and introduces the required amount of
gas to ensure correct combustion. The Sentry reads the boiler water temperature, compares it to the set point, and adjusts the burner
firing rate accordingly by varying the speed of the combustion blower.
The (Blue) Fan Controller communicates the appropriate demand and temperature set point to the (Red) Boiler Controller via a
series of digital and analog inputs. Table 9.3 shows the Boiler Controller’s response to the demand. For more information on
‘RESET MODE’ see section ‘
9.3 Outdoor Sensor Operation
’.
9.2.1 Setting Matrix Boiler Control (Sentry)
Programming is accomplished by a series of three push buttons located on the bottom side of the control. (
Function,
↑
and
↓
). To
enter the programming mode, press the function key once. To scroll through the various menu options depress
↑
until the menu is
displayed. To alter the value press
Function
once, and the current value will be displayed, then use
↑
for up, and
↓
for down, until
the desired value is obtained. To enter the selected value press
Function
, which will return to the menu. When all desired values are
selected, scroll to the RUN menu, and press Function, which exits the Programming Mode and initiates normal operation. A safety
feature has been added to ensure that if the control is left in the Program Mode, the unit will turn off if left in program mode longer
than 30 seconds without receiving an input. Press
Function
once to continue programming or to start boiler operation.
Standby/Storage
Mode
Primary
Forced Air
Call (W1)
Auxiliary
Forced Air
Call (W2)
Shared Call
Forced
Air/Hydronic
Hydronic
Demand (H)
DHW
Demand
Condition
Storage
Off
Storage
On
Heat (W1)
Aux Heat
(W2)
Shared (W1/W2
and H)
Hydronic Call
Domestic
Only
Set Point
- 160°F SP
Note 1
HI
Note 1
Greater of SP/ HI
and HYD
HYD
H2O to
H2O+30
Burner On
- 140°F SP
Note 1
HI
Note 1
Greater of SP/HI
and HYD
HYD-DIF H2O+30
Burner Off
-
180°F
210°F
210°F
210°F
HYD + 10
210
°
F
CO
NVENTIO
NAL
MODE
Heat Circ.
Off On
On
On
On
On
On
Standby/Storage
Mode
Primary
Forced Air
Call (W1)
Auxiliary
Forced Air
Call (W2)
Shared Call
Forced
Air/Hydronic
Hydronic
Demand (H)
DHW
Demand
Condition
Storage
Off
Storage
On
Heat (W1)
Aux Heat
(W2)
Shared (W1/W2
and H)
Hydronic Call
Domestic
Only
Set Point
- 160°F SP
Note 1
HI
Calc.
Note 1
Greater of SP/ HI
Calc.
and HYD
Calc.
HYD
Calc.
H2O to
H2O+30
Burner On
- 140°F SP
Note 1
HI
Calc.
Note 1
Greater of SP/ HI
Calc.
and HYD
Calc.
HYD
Calc.
-DIF H2O+30
Burner Off
- 180°F 210°F
210°F
210°F
HYD
Calc.
+ 10
210
°
F
RESET
MODE
Heat Circ.
Off On
On
On
On
On
On
Note 1. SP (Setpoint) received from Matrix Fan Controller.
Table 9.3 Conventional vs. Outdoor Reset Mode
