Maximum Operating Conditions

TECHNICAL SPECIFICATION

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

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.