Hitecsa EWMIM 117 Manual De Instrucciones página 29

The DHW production is ensured by the KVDEV kit installed downstrean the single unit or group of units The 3-way valve of the KVDEV kit deviates
water flow from the system to the technical water storage tank for the system producing domestic hot water.
II.6.5.2 Integrative thermal source (KRIT accessory)
An integrative thermal source is an electric resistance that runs together with the EWMIM heat pump in winter mode. By means of the unit's control, it is
possible to control start-up and switch-off according to the different variables: outdoor air temperature, delay in reaching the set-point set due to a high
thermal load.
Resistance is always activated during the defrost cycle and when DHW production is requested.
When there is a 3-way valve for KVDEV DHW production, the electrical resistance must be placed upstream of the valve, as illustrated in the figure.
It is always recommended to accurately check the electrical power available when integrative electrical resistances are installed.
SECTION II: INSTALLATION AND MAINTENANCE
31
1. Compact-I
2. Inertial storage tank
3. 3-way valve (optional)
4. Domestic
5. Technical water storage
tank
1. Compact-I
2. Inertial storage tank
3. Electric heater
4. 3-way valve (optional)
5. Domestic
6. Technical water storage tank