Function E14-E25, Radiators And Double Shelled Electric Water Heater (Outline Diagram) - IVT Greenline D14 Manual To Installation, Commissioning And Maintenance

Function E14-E25, radiators and double shelled electric water heater
Overview
The radiators are first heated by the heat pump, which creates the required temperature through intermittent opera-
tion (liquid condensation). If the heat pump is not sufficient the built-in electric boiler provides supplementary heat in
three steps.
Heat from the heat pump
The required temperature for the heating system (TT1) is set on the heat pump as an outdoor curve.
The heat pump starts when TT1 falls below the set temperature by 2.5°C and stops when TT1 exceeds the set
temperature by 2.5°C (adjustable).
The temperature to the heating system can be controlled by either the heating system flow or return.
The best function is available when TT1 is mounted on the flow pipe, which requires that the heat pump hysteresis is
increased from 5°C to 10°C (Menu 1.4).
Hot water
At a low temperature in the coil tank (TT3), the 3-way valve changes over to the coil tank and changes back to the
heating system when the coil tank is warm again.
The heat pump is allowed to work for max 30 minutes to the coil tank if there is a heating demand. After which the
heat pump must work at least 20 minutes to the heating system or until the heating demand is met.
The temperature in the water heater increases by set intervals to 65°C.
Electric water heater
If the heating system temperature (TT1) falls under the set temperature by more than half hysteresis (2.5°C) of set
time (60 minutes) the electric water heater is activated.
When the heater is active and TT1 falls below the set temperature, the heater output is increased in 3 steps at 20
minute intervals. If TT1 exceeds the set temperature, the heater output is reduced in 3 steps in 3 minutes. The electric
water heater is blocked at the same time as the heat pump stops when the heating demand is met.
Summer disconnection
The heating system and circulation pump G1 (P1) stop when the outdoor temperature exceeds 18°C (between 10°C
and 30°C). The circulation pump is exercised for 3 minutes every third day.
For information regarding other controls see description of Rego 600.
To heat source
PLEASE NOTE: This is a sketched outline
Distance
10x
pipe
diameter
Filling
* E5-E16 have a built-in filter
To radiators
Symbols in accordance with SS-En 1861