Matrix Blower Operation - NTI Matrix M100 Installation And Operating Instructions Manual

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.
Table 10.1 Fancoil Output Chart
Heat Profile 1 (PF1)
Heating Set Point Air Temp
CFM
Stage (°F)
1 400 108
2 550 110
3 670 113
4 720 117
5 760 120
6 810 124
7 860 127
8 900 130
9 950 133
10 1000 136
Example. At stage 4 (Profile 1) the Matrix provides 720 CFM across the fan coil, which is receiving 117°F water from the boiler. The
coil then supplies plenum air at 108° F or ~27700 BTU/hr.
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 (maximum output). 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.
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.
Btu/Hr Out CFM
(°F)
104 14000
400
104 19000
550
105 24000
670
108 27700
730
110 31400 790
112 35100
850
114 38800
910
115 42500 970
117 46300
1030
118 50000
1100
Heat Profile 2 (PF2)
Set Point Air Temp
Btu/Hr Out CFM
(°F) (°F)
104
108 14000
104
110 19000
105
113
24000
112
122 31500
131
118 39100
138 122 46700
145 127 54200
152
131 61800
158 134 69400
164
137 77000
37
Heat Profile 3 (PF3)
Set Point Air Temp
(°F) (°F)
400 108 104
550 110 104
670 113 105
750 128 116
820 141 125
900 152 132
975 163 139
1050 172 144
1120 181 149
1200 190 153
Btu/Hr Out
14000
19000
24000
35500
47100
58700
70200
81800
93400
105000