Specifications

33
Matrix Installation and Operation Instructions
10.0 MATRIX BLOWER OPERATION
10.1 Forced Air Heating
The Matrix forced-air heating module is a step-modulated system, which provides varying heat output rates by adjusting air flow
and water temperature through a fan coil.
On an initial thermostat call (24VAC @ W1), space heating begins by providing heat at stage 3 (~24,000 BTU/hr) (if hydronic heat
is also calling (24VAC @ H) heating will begin at stage 1) and so long as the thermostat is not satisfied, incrementally increases to
a maximum of stage 10 (~66,000 BTU/hr). When the thermostat becomes satisfied, an average of the heat output rate during the
call is calculated. The boiler remains lit and the space heat output begins an incremental decrease in heat output rate beginning with
the stage just below the calculated average and ending with either the thermostat re-calling or if the thermostat never re-calls, the
output rate decreases to minimum stage after which the boiler shuts off.
If the thermostat re-calls prior to the minimum heat stage, a new calculated average of the thermostat off cycle is calculated and the
boiler again begins an increasing ramp, only this time it begins at the calculated stage and not necessarily at the minimum stage.
This computation “hunts” for the heat loss of the dwelling based on the reaction of the thermostat to the rise and fall of the space
temperature and the heat cycle rate of the thermostat.
If at any time the plenum temperature exceeds 160°F, the boiler will stop supplying heat until the temperature in the supply plenum
drops below 140ºF, during which time an AL2 error message will be displayed.
Call for Heat (24VAC @ W1): Normal Thermostat call, Matrix operates as a step-modulating furnace as described above. If
HRV set to ‘ON’, HRV will operate at the low (continuous) ventilation rate.
ATTENTION
The burner will remain on and the Matrix will provide heat when the thermostat is off. This is normal and is
required to provide constant efficient heat.
Table 10.1 Fancoil Output Chart
Heat Profile 1 (PF1) Heat Profile 2 (PF2) Heat Profile 3 (PF3)
Heating
Stage
Cfm
Set Point
(°F)
Air Temp
(°F)
Btu/Hr Out Cfm
Set Point
(°F)
Air Temp
(°F)
Btu/Hr Out Cfm
Set Point
(°F)
Air Temp
(°F)
Btu/Hr Out
1 300 115
109 12,000
400 115
109 15,500
500 115
108 18,500
2 425 120
111 18,000
550 120
111 22,600
675 122
112 26,700
3 550 124
112 24,000
700 125
114 29,700
850 128
115 34,900
4 675 128
113 30,000
850 130
116 36,800
1025 135
118 43,100
5 800 132
114 36,000
1000 135
118 43,900
1200 140
120 51,300
6 800 142
121 42,000
1000 145
125 51,000
1200 150
126.5 59,500
7 800 152
128 48,000
1000 155
132 58,100
1200 160
133 67,700
8 800 161
135 54,000
1000 165
139 65,200
1200 170
140 75,900
9 800 170
141 60,000
1000 175
146 72,300
1200 180
147 84,100
10 800 180
148 66,000
1000 185
154 79,000
1200 190
150 92,000
A`tual Output rates may vary from
what is shown
Example. At stage 4 (Profile 1) the Matrix provides 675 cfm across the fan coil, which is receiving 128°F water from the boiler. The
coil then supplies plenum air at 113° F or ~30,000 BTU/hr. (1.08x675x(113-72)=30,000)