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HEATMASTER CONTROL SETTINGS
Description
The 71/101 series is fitted with an electronic controller (MCBA)
which controls burner operation (ignition, safety and modulation),
and provides facilities to adapt the controller to the desired application.
The MCBA has three levels of settings : manufacturer, installer and
user. There are three temperature detectors located in the primary
and secondary circuits.
It provides two operating modes.
1. Heating mode
Temperature set by the user at between 60 and 90 °C.
• Differential “ON”, burner starts.
• Differential “OFF”, burner stops.
• PI (Proportionnel Integral) regulator in “heating” mode.
• The regulator compares the primary temperature with the setting
and modulates.
The room thermostat detects the heating demand
2. Hot water mode
(with hot water priority)
The detector located in the secondary tank detects the hot water
demand.
When a draw-off is detected the controller goes to “hot water
demand” mode:
• The primary shunt pump starts.
• The heating pump switches off.
• The burner starts and the controller uses the data from the
primary detector to control modulation.
User-accessible parameters
1. “Hot water” setting adjustable from 20 to 90 °C.
2. “Hot water” mode: ON/OFF.
3. “Heating” mode: ON/OFF.
4. “Heating” setting adjustable from 60 to 90 °C.
Parameters accessible in servicing
Main default settings:
- Hot water priority active.
- Heating demand detection by room thermostat.
- A single heating circuit.
An access code is required for “service” access.
For more technical information, contact your ACV dealer.
TECHNICAL SPECIFICATION
MAXIMUM OPERATING CONDITIONS
Maximum service pressure (tank full of water)
- Primary circuit: 3 bar
- Secondary circuit: 10 bar
Test pressure (tank full of water)
- Primary circuit: 4.5 bar
- Secondary circuit: 13 bar
Operating temperature
Maximum temperature: 90 °C
Water quality
• Chlorures: < 150 mg/l (304)
< 2000 mg/l (Duplex)
• 6 ≤ ph ≥ 8
DOMESTIC HOT WATER PERFORMANCES
HM 71 HM 101
Peak delivery at 40 °C L/10’ 646 905
Peak delivery at 45 °C L/10’ 543 777
Peak delivery at 60 °C L/10’ 346 514
Peak delivery at 70 °C L/10’ 268 385
Peak delivery at 80 °C L/10’ 203 290
Peak delivery at 40 °C L/60’ 2133 3172
Peak delivery at 45 °C L/60’ 1794 2680
Peak delivery at 60 °C L/60’ 1219 1813
Peak delivery at 70 °C L/60’ 971 1378
Peak delivery at 80 °C L/60’ 710 1003
Continuous delivery at 40 °C L/60’ 1835 2776
Continuous delivery at 45 °C L/60’ 1573 2379
Continuous delivery at 60 °C L/60’ 1067 1665
Continuous delivery at 70 °C L/60’ 715 1241
Continuous delivery at 80 °C L/60’ 675 903
Reheat time to 60 °C min 16 13