Safety Devices - Lochinvar EcoSword LGC 160-210 G P CE Installation, Commissioning, User & Maintenance Instructions

6.3
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0312582_EcoSword_V4.0, 03-05-2021

Safety devices

Fig. Safety devices
!
Safety devices of the water heater:
Temperature
sensor (1)
Gas control valve (2)
Air proving switch (3)
Flame probe (4)
Safety devices of the installation:
Expansion vessel
Expansion valve
Pressure-reducing valve The pressure-reducing valve reduces the water
Temperature and
pressure relief valve
(T&P valve)
(1)
1 - All installations have a T&P valve connection. A T&P valve is mandatory for unvented installations.
Note
This manual only discusses unvented installations.
The water heater controls the water temperature
using a temperature sensor:
- T < 5 ºC, frost protection is activated.
- T > 90 ºC, max. temperature.
- T > 97 ºC, for extra safety.
The gas control valve controls the gas supply to
the burner.
The air proving switch guarantees the air supply
differential during pre-purging.
The flame probe detects if there is a flame in the
burner.
The expansion vessel stores temporarily expansion
water to keep the pressure in the installation at the
right level.
The expansion valve prevents excessive pressure in
the tank of the water heater.
mains pressure, if necessary.
The T&P valve prevents excessive pressure and
temperature in the tank.
1. Temperature sensor
2. Gas control valve
3. Air proving switch
4. Flame probe
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