User's Guide; Models - Watermaster® 25 (X) - 35 - 45 (X) - 70 (X) - 85 - 120 Evo - ACV WaterMaster 25 Evo Installation Operation & Maintenance

MODELS - WATERMASTER® 25 (X) - 35 -
45 (X) - 70 (X) - 85 - 120 EVO
The WaterMaster® and WaterMaster® X Evo series is a
range of condensing water heaters designed for the ex-
clusive production of Domestic Hot Water. The water heat-
ers combine ACV's "Tank-in-Tank" concept with a double
primary circuit to reach the high performance of a TOTAL
CONDENSATION, double-circuit water heater. Please also
consult the detail of components in the "ML" booklet.
The WaterMaster® X Evo models are equipped with a tank
of bigger capacity. This series is especially designed for
the production of large volumes of hot water and meets
high DHW demands at peak moments. The DHW circuit
recirculation connection also guarantees faster delivery
of hot water to the whole facility. This series is particularly
suitable for places where numerous DHW demands occur
simultaneously, such as hotels, sport centers or hospitals.
WaterMaster
25 - 35 - 45 Evo
EN

User's Guide

WaterMaster
70 - 85 - 120 Evo
A1009341-664Y8300 • B
All the WaterMaster® Evo models are equipped with a
high efficiency charging pump and with an ACV air/gas
premix burner with low NOx emissions. During operation,
the burner starts automatically as soon as the water heat-
er temperature gets lower than the preset temperature
and stops as soon as the preset temperature is reached.
The WaterMaster® Evo series features a built-in frost pro-
tection mechanism: as soon as the flow temperature [NTC1
probe] drops below 7°C, the primary pumps are activated.
As soon as the flow temperature is at 5°C, the burner starts
up until the flow temperature rises above 15°C. The pumps
continue to run for around 10 minutes. The function can be
enabled or disabled through the installer menu. When the
frost protection is disabled, only the pumps operate.
WaterMaster
70 X Evo
WaterMaster
25 X - 45 X Evo
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