| |
   |
| |
 |
| |
Installation of controls
for heating systems |
| |
| Plumbing and heating engineers are often faced
with the difficult problem of trying to cope with a surge of
heating enquiries and too few hours in which to maximize their
business potential. Simple straight-forward installations are
few and far between, so manufacturers who are able to provide
solutions that simplify the installation process at the right
cost will enable engineers to maximize their profit potential
to the full. |
| |
| |
 |
One of the most difficult tasks in the design
and installation of a traditional heating system with stored
hot water, is to get the hydronic design correct, that is
the positioning of pipes, pump and control valves etc to allow
the heated water to flow correctly, with out air ingress and
other associated problems.
Combination boilers have often been fitted for there simplicity
of installation, as most of the system design is catered for
within the boiler assembly, and in some cases combination
boilers have been installed inappropriately, for their simplicity,
rather than their practical application. |
| |
| |
 |
 |
Elson have developed the 'Control System Manifold'
to overcome this problem. It is ideal for the self-build market
and the professional engineer as it caters for all the system
design requirements on a pre assembled manifold. Four screws
hold the manifold to the wall then it's a simply case of connecting
the systems pipe work as illustrated.
It is more expensive, but the savings in labour time and
potential problems associated with incorrect installation
far outweigh the increased cost. The following case study
has been conducted as a worked example. |
| |
| |
 |
|
This 8mm oil fired installation demonstrates the
problem engineers often face.
Where do you start?
The customer is complaining of poor performance and the need
to constantly bleed air from the system. |
| |
| |
 |
|
The combined feed and vent is a legacy from the
old solid fuel system that was converted to oil and part of
the air ingress problem. The obvious solution many be to simply
start again! Though this may seem time consuming.
Elson may have the answer with their Manifold control assembly.
The Elson remote manifold is a sealed primary plumbing arrangements,
which includes most of the components and controls required
for a fully pumped heating and hot water system. The unit
is ideal for fitting in an airing cupboard. |
| |
| |
 |
|
The system controls, which include a plated steel
plumbing manifold with pre-set central heating by-pass, air
separator, Honeywell Y Plan zone valve, wiring centre, circulating
pump, 8 litre expansion vessel (conforming to BS4814:1990),
pressure gauge safety valve (complying with BS6759 part 1:1984,
set to operate at 3 bar) are all supplied assembled onto a wall
mounting bracket. All the water connections have been pressure
tested for water soundness. The pre-set by-pass allows the use
of thermostatic radiator valves if required. |
| |
| |
|
|
Only six pipe connections are required to the
clearly identified 22mm compression fillings on the plumbing
manifold. S & Y plan and open vented system versions are
also available. |
| |
| |
 |
|
With the Amerpak manifold assembly the time required
to install the new layout is reduced significantly and by installing
the sealed system version the air problem has been removed.
This installation took less than a mornings work a major advantage
for the busy installation engineer. |
| |
| |
Other advantages include
- The circuit hydraulics of the Y Plan, pumped primary system
and sealed system components have been correctly designed
into the manifold assembly, reducing the likelihood of error.
- Pre-plumbed, pre-wired and factory pressure tested assembly
reduces installation time.
- Layout and positioning of Y Plan components already taken
care of, providing a neat installation.
- Built in air separator quickly clears air from the system.
- Built in central heating by-pass (if required, the manifold
can be supplied without a by-pass).
- Simple, identifiable manifold connections, tidier pipe
runs and a more professional installation.
- Terminals in the wiring centre marked for easy connection,
with many connections already made.
Advantages for maintenance
- Excellent reliability record with negligible problems
reported in over six years in the field.
- Designed with maintenance in mind, with all components
readily accessible and easily removed.
- Components used are familiar to the Maintenance engineers,
who are able to rectify problem quicker and get system running
again.
- Spares are competitively priced and readily available.
If not carried by Maintenance engineer they are easily obtained
from the nearest Builders merchant.
- Wiring circuits easily checked as terminals are clearly
market in wiring centre. Technical Helpline service available.
|
| |
| |
| System specification
& price comparison |
| |
| Honeywell Control Pack which includes: |
| |
| 3-way motorised valve |
|
|
| Cylinder Thermostat |
|
| Room Thermostat |
|
| Programmer |
|
| Honeywell wiring centre |
£70.00 |
| Grundfoss UPS 15/50 pump |
£35.78 |
| 8 Litre primary sealed system vessel pack |
£37.39 |
| Pump valves, air vent & fittings |
£8.00 |
| Air separator |
£9.30 |
| System by-pass valve |
£17.46 |
| Total cost excluding labour & pre wiring |
£177.93 |
| |
| |
| The steel plumbing manifold incorporates an air
separator and a pre-set central heating by-pass (if required,
the manifold can be supplied without a by-pass) The pump and
3 port valve are pre wired within the manifold.
This compares favorably with the manifold prices available
from plumbworld.co.uk,
there are four control manifold systems available. To order
simply follow the links. |
| |
| |
 |
|
 Y
plan open vented |
| |
| |
|
|
Y
plan sealed system |
| |
| |
 |
|
S
plan open vented |
| |
| |
 |
|
S
plan sealed system |
|
|
|
|
|
|
|
