Aerco MODULEX EXT 321 - Setting of DHW Circuit; Operation of Pumps in Parallel; Use of a DHW Storage Tank Thermostat (On;Off); Antilegion

MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS
Installation, Operation & Maintenance Manual
Page 112 of 146 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0087_0F
07/13/15 Phone: 800-526-0288 GF-143
Table 5-7: 0-10V Signal with Slope and Temperature
Curve U1 U2 T1 T2 UA
0
2.0 V
10.0 V
32° F
194° F
2.0 V
1
2.5 V
0.3 V
100° F
176° F
5.0 V
2
2.5 V
0.3 V
100° F
167° F
5.0 V
3
2.5 V
0.3 V
100° F
113° F
5.0 V
4
4.0 V
0.1 V
68° F
185° F
5.0 V
5
4.0 V
0.1 V
68° F
167° F
5.0 V
6
4.0 V
0.1 V
68° F
131° F
5.0 V
7
4.0 V
0.1 V
68° F
189° F
5.0 V
8
4.0 V
0.1 V
68° F
189° F
5.0 V
9
4.0 V
0.1 V
68° F
163° F
5.0 V
10
4.0 V
0.1 V
68° F
127° F
5.0 V
11
4.0 V
0.1 V
68° F
194° F
5.0 V
Setting of DHW Circuit 5.10.2
5.10.2.1 Operation of Pumps In Parallel
Heating pump operation during DHW production.
EXPERT menu ⇒ Hot Water ⇒ F-PUMP PARAL “00,01,02,03”
5.10.2.2 Use of a DHW Storage Tank Thermostat (On/Off)
To use an ON - OFF thermostat instead of DHW sensor.
EXPERT menu ⇒ Hot Water ⇒ THER IMPUT “01”
5.10.2.3 Antilegion
Activation of an antilegion program.
EXPERT menu ⇒ Hot Water ⇒ ANTILEGION “01”
5.10.2.4 Setting for Solar Panel Use
Use a PT 1000 sensor as a solar panel sensor.
EXPERT menu ⇒ Solar/ MF ⇒ FUNC RELAY 4 “23”
5.11 ACCESS CODE SETTING
To set the access code, press the Programming button to enter the first parameter, use the data
knob to select a number, and then press the Programming button to accept the value. Repeat
this procedure for each code number position.
Figure 5-12: Setting the Access Code