IDEAL SUPER PLUS 200/S, Установка и обслуживание

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12
Super Plus -
Installation and Servicing
WATER CIRCULATION SYSTEM
DESIGN REQUIREMENTS
SUPER PLUS
Gas Boilers are intended for use in conjunction with
FULLY PUMPED, OPEN VENTED OR PRESSURISED systems,
subject to the requirements below. They are NOT SUITABLE for
use on gravity circulation systems.
Water flow rate:
28.4 gal/min (2.15 l/s) ± 10% through each module. Thus a 6
module boiler ( Super Plus 600/6 ) requires 170.4 gal/min (12.9
l/s) volume flow rate.
Note:Failure to maintain this flow rate will result in operation of the
module overheat thermostat.
Any other method of installation should be discussed with Ideal
Boilers before proceeding.
Hydraulic Resistance:
When operating at the correct volume flow rate given above,
the Hydraulic Resistance of all Super Plus boilers is 98 mb (39
in.w.g.) ± 20%.
Pump Overrun:
A pump overrun time of 30 seconds minimum must be allowed for
on plant shutdown.
Maximum Static Head:
60.0m (197 ft.), i.e. maximum operating pressure 6.0 bar (85 lb/in
2
).
Minimum Static Head
Minimum static head requirements for open vented systems must
comply with boiler design characteristics, pump manufacturer's
requirements and the requirements of the Health and Safety
Executive Publication PM5.
A minimum static head of 1.6 m is required to overcome the boiler
hydraulic resistance and give a reasonable safety margin. This
requirement is specific to the boiler but installed systems must also
comply with Health and Safety Executive Guidance Note PM5. In
those cases with minimum static head available it will be necessary
to fit a further overheat thermostat in the mixed flow from the boiler
set at 90
0
C and wired to terminals S2 and S3 in the wiring centre.
Note:
In some cases pump manufacturers will require a head
as high as 12 m (40 ft), This must be allowed for the minimum
head increase accordingly.
See Fig.14 for further clarification
1. Roof top or single storey applications
2. Ground floor or basement applications
System Zones
Minimum head
required by boiler,
but additional head
may be required
by the pump
manufacturer
or to comply
with Health and
Safety Executive
Guidance Note
PM5
All dimensions in mm (in.)
l
LEGEND
1. Cold feed (size must
comply with BS 6644)
2. Open vent (size must
comply with CP:332:3)
3. Safety valve
4. Water flow switch
5. Dual primary pumps
6. Mixing header
7. Feed expansion tank
8. Mixing valve
9. Highest point in system
Fig.13 Guide to Minimum Requirements - Feed / expansion tank height & boiler primary circuit
HIGH
LEVEL
ZONE
MID
LEVEL
ZONE
HIGH LEVEL ZONE
Super
Plus
Boiler
Super
Plus
Boiler
GENERAL
GENERAL