Set Points And Control Strategies - Dantherm HCV 4 Manuel D'installation

Set points and control strategies

Introduction This section describes the different factory settings for the unit and the adjustment op-
tions on the control panel and remote control.
Factory setting Current factory settings:
Fan Step 0
Fan Step 1
Fan Step 2
Fan Step 3
Fan Step 4 (maximum speed)
'OFFSET'
(gear between Fan Steps 1-2-3)
Automatic On-Demand Mode (RH%)
Filter period
Frost protection of the exchanger
Frost protection of afterheat
Frost protection How the frost protection works:
1) Frost protection of exchanger.
The controls have a built-in protection function against preventing ice building up in
the heat exchanger.
If the exhaust air temperature falls below + 2°C for more than 1½ hours, the unit
starts to reduce the flow rate of supply air (i.e. RPM on the supply fan are reduced)
until the exhaust air temperature reaches a minimum of + 2°C. Frost protection usu-
ally starts when the outdoor air (T1) is -6 to -7°C or below.
2) Shutdown at an outside temperature below -13°C. If the outside air (T1) falls below -
13°C for more than 5 minutes, the unit will stop completely for 30 minutes. The unit
will then start up again for 5 minutes. If the temperature does not rise above -13°C,
the unit will stop again for 30 minutes, etc.
Recommendation
To ensure balanced ventilation without shutdown Dantherm Air Handling A/S recom-
mends installing pre-heat in areas where the outside temperature will fall below -6°C
for extended periods during the year.
In areas where temperatures are constantly below -13°C, pre-heat is a must to
achieve optimum operation.
Set point Factory setting Settings range
HCP 4
control panel
OFF -
Gear 14 Gear 1 - 41
Gear 39 Gear 21 - 66
Gear 64 Gear 46 - 91
Gear 100 Gear 100
25 gears -
45% 45%
180 days 180 days
T4 ≤ + 2°C -
T2 ≥ + 5°C -
HRC 2
remote control
-
Gear 1 - 71
Gear 36 - 81
Gear 46 - 91
From Fan Step
3 to Gear 100
10 - 30 gears
35-65%
90-360 days
-
-
13