Wolf KG Gigant Series Installation And Maintenance Instructions Manual page 16

Heater
(Warm water/hot water/steam)
Electric heater
Cooler
(Cold water)
16
Commissioning of the unit
Before starting the unit, check pipework for possible leaks.
- Bleed heat exchanger and pipework.
- For steam registers, ensure that a condensate drainage is provided to avoid
damage of the register by steam impact.
- Switch on the heating water pump or open the water/steam valve only whilst
the fan is running to avoid overheating due to insufficient heat dissipation.
- Check blowing out temperature: maximum blowing out temperature for
heaters mounted on the inlet side is 40°C, as otherwise the motor may
overheat.
Take care, as heat exchangers and connection sections contain hot surfaces.
To avoid overheating, the following minimum air volumes (in m³/h) must be
maintained:
Unit type KG/KGW
Air flow horizontal
+ vertical
vertical
For multi-speed or speed-controllable motors these air volumes must be
Caution
maintained at the lowest motor speed, irrespective of the heating performance
of the electric heater.
All standard safety regulations must be observed!
It is vital to ensure that in case of loss of air flow, the electric heating register
Caution
automatically switches off. Additionally, the electric heating register may only
be switched by one or several contactors, whose control circuit passes through
temperature safety controllers (TSC) connected in series. Note that at least
one TSC should be fitted on top of the internal heater side.
The electric heating register must be protected against moisture and water.
Before starting the unit, check pipework for possible leaks.
- Bleed heat exchanger and pipework system.
- Ensure that condensate drainage is provided to avoid the condensate trough
from overflowing.
- If applicable, check that the concentration of the anti-freezing agent in the
cooling water is sufficient for the designated temperature range before starting
the cold-water cooler. When adding an anti-freezing agent to the cold water,
the performance of the cooler decreases proportionally with the increased
concentration of the mixture.
- Check the cold water temperature; the cold water temperature may not fall
below +2°C, as there is a danger that at temperatures of < +2°C the heat
exchanger may freeze up.
Anti-freezing agents are generally harmful. The safety information supplied by
the manufacturer of the anti-freezing agent used on site must be observed.
40 63 100
1600 2500 4000
é
ê
2200 3200 5700
Gigant
160 250 400
6300 12500 22500
9000 12500 22500