Roberts Gorden Combat HF 30 v4, Инструкция по установке, пусконаладке, обслуживанию и эксплуатации

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Page 34
CABINET HEATER
4.3.1.1 Controls for High/ Low Burner Operation
For heaters that incorporate an Ecoflam High/Low burner then the on site controls will need to provide the two stage
signal to operate these burners.
This is best provided by a two stage thermostat so that the setting of the thermostat ensures that the two set points are
correctly related.
The thermostat may control the heater outlet temperature if the heater is designed for a duct distribution system or the
room temperature.
The site wiring will be across terminals 2 & 3 for any time control and the on/off function of the burner (stage two) and
across terminal 2 & 8 for the low fire (first stage ) setting.
The burner will then operate as follows:
• Temperatures from cold up to the first stage set point - Full fire at the maximum rate
• Temperatures above first set point up to the second set point - Low fire at the minimum rate
• Temperatures above the second set point - Off
4.3.1.2 Controls for Fully Modulating Burners
For heaters that incorporate an Ecoflam fully modulating burner then the Landis & Staefa temperature control is provided
with the heater. The Landis & Staefa control provides the temperature control and the on site wiring of the temperature
sensor is required along with any time control required on site.
The heater will normally be controlled by the temperature of the air in the outlet duct, but it is possible to control on room
temperature.
The position of the sensor in the outlet duct is to be determined on site as all installations differ.
By using a suitable thermometer select a position in the outlet duct approximately 1 meter from the heater and look for
a position across the cross section of the duct that provides a reasonable average of the temperatures found. Mount
the sensor as close to this position as possible for best results.
It must be noted that when operating at reduced heat input the leaving air temperature may be low when controlled on
room temperature.
The Time control and any other on/off controls will be across terminals 2 & 3.
The sensor will be connected to terminals 8 & 9
The operation will then be:
• The burner will fire and once the burner sequence reaches the release to modulation stage the Landis & Staefa
control will begin to monitor the outlet temperature.
• The control will then adjust the burner input continuously to attempt to maintain the set temperature on the control.
• Should the temperature continue to rise even though the burner is operating at minimum fire then the control will turn
off the burner until the temperature falls again when the burner will restart automatically.
If a switch etc. is required to turn on the main fan for ventilation, then this must be voltage free, from external sources,
and may be connected between: Terminals L
1
and 1 for all models 15 to 30 or Terminals 2 and 1 for all other models.