Production Of Domestic How Water Dhw - Hitecsa EWMIG 236 Manuel D'installation, D'utilisation Et D'entretien

II.6.6

PRODUCTION OF DOMESTIC HOW WATER DHW

For the production of DHW by using the heat pump, use a technical water storage, which cannot be used directly for human consumption, and combine
it to a DHW producer.
The figure shows an example:
KACTS
7
1
2
II.6.6.1 Management of the priorities and domestic hot water request
The priority between DHW and system can be set directly from the control panel.
How to manage the DHW request:
o by means of the digital input: the request is assigned by a thermostat assembled by the installer. When the thermostat closes, the unit understands
that there is a DHW request and, once the conditions have been verified, the procedure is activated to meet the DHW requirements;
o by means of temperature probe in the storage tank: a temperature probe is placed inside the storage tank, which is directly connected to the unit
board. The required set point can be configured from the panel together with the relative activation differential. In this case, the probe must be
accurately positioned and the maximum distance allowed respected due to the type of probes used.
Type of probe
description type of probe
NTC150 NTC OT150
NTC NTC
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.
3
KMACSI
3
features þ (25/85)
50kK@25°C 3977 (±1%)
10kK@25°C 3435 (±1%)
2
4
6
SECTION II: INSTALLATION AND MAINTENANCE
KACTS
KMACSI
5
4
6
1
5
39
technical water storage tank
instantaneous domestic hot
water producer
1 from heat pump
2 from the mains
3 drain
4 recirculation pump
5 DHW utility
6 from the mains
7 safety valve
1 Compact-I
2 Inertial storage tank
3 Hydraulic circuit breaker
4 3-way valve (optional)
5 Domestic
6 Technical water storage tank