1.11 Ventilation Requirements
Vision tube heaters can be operated as
flued or un-flued appliances (not for 50kW
models) in accordance with the relevant
national requirements in the country of
the installation.
1.11.1 Un-flued Radiant Heater (not for 50kW
models)
Radiant tube heaters can be operated as
un-flued appliances, so that concentration
of Carbon Dioxide (CO2) at positions where
the air will be inhaled does not exceed
0.28%. EN 13410 is a guide to achieving
this requirement.
If the building air change rate exceeds 1.5
per hour or if the heat input is less than 5W/
m³, no additional ventilation is required.
In addition to the ventilation requirements,
consideration needs to be given to the possi-
bility of condensation forming on cold
surfaces. It should be noted that the clear-
ance distance around the burner increases
when the unit is operated un-flued (see
section 1.8 on page 12).
It should be ensured that the combustion
gases do not impinge on any combustible
materials.
Mechanical Ventilation
Mechanical ventilation must be rated at
the minimum 10m³/h per kW input using
approx. sized fans and interlocked with
heaters.
Natural Ventilation
EN 13410:
should be used to size air vents
to provide adequate ventilation, an example
of this calculation is given below:
• Site Details: 20°C internal operating
temperature
• 0°C Outside Air Temperature
• 5m between high and low level vents
Following the sizing procedure in EN 13410
gives an air exit velocity of 1.6m/s. This
equates to a free area vent at both high level
and low level of 17.36cm²/kW free area.
1.11.2 Flued Radiant Heater
In buildings having an air change rate of less
than 0.5 per hour, additional mechanical
or natural ventilation will be required.
For detailed information, refer to local or
National Standards.
Mechanical Ventilation
Mechanical ventilation must be installed
to meet a minimum of 0.5 air changes per
hour using appropriately sized fans and
interlocked with the heaters.
Natural Ventilation
Low level ventilation openings with a free
area of at least 2cm²/kW shall be provided.
Figure 17.
VS Internal Burner Wiring Diagram
MAINS INPUT
Honeywell
GV1 = Brown
GV2 = Blue
GV3 = Green/Yellow
SIT
GV1 = Blue
GV2 = Brown
GV3 = Green/Yellow
Lockout plug
(optional)
WEBBER
SOLENOID
(optional)
16
Содержание VS15LHE8
Страница 34: ...A Figure 41 Vision Heater Assembly Models VSUTE VSUHE 15kW 76mm 3ins Nom Dia 34...
Страница 35: ...A A Figure 42 Vision Heater Assembly Models VSUTE VSUHE 20 25kW 76mm 3ins Nom Dia 35...
Страница 36: ...Figure 43 Vision Heater Assembly Models VSUTE VSUHE 30 35kW 100mm 4ins Nom Dia 36...
Страница 37: ...Figure 44 Vision Heater Assembly Models VSUTE VSUHE 40kW 100mm 4ins Nom Dia 37...
Страница 38: ...Figure 45 Vision Heater Assembly Models VSUTE VSUHE 45 50kW 100mm 4ins Nom Dia 38...
Страница 39: ...A Figure 46 Vision Heater Assembly Models VSLIE VSLHE VSDLE 15 25kW 8m 76mm 3ins Nom Dia 39...
Страница 40: ...A Figure 47 Vision Heater Assembly Models VSLIE VSLHE VSDLE 20 25kW 10 5m 76mm 3ins Nom Dia 40...
Страница 41: ...Figure 48 Vision Heater Assembly Models VSLIE VSLHE VSDLE 30 35kW 10 5m 100mm 4ins Nom Dia 41...
Страница 42: ...Figure 49 Vision Heater Assembly Models VSLIE VSLHE VSDLE 30 35 40 45 50kW 13 5m 100mm 4in Nom Dia 42...
Страница 43: ...Figure 50 Vision Heater Assy Models VSLIE VSLHE VSDLE 35 40 45 50 kW 16m 100mm 4ins Nom Dia 43...
Страница 59: ...Notes 59...