Andrews Water Heater Replacement
August 2020
In August 2020 we removed two old Andrews Supaflo R301
water heaters flue assemblies and buffer tank which had
reached the end of their viable lifespan and replaced them
with two new Andrews Ecoflo EC380 water heaters.
Due to the location and weight of the units we instructed the
manoeuvring of the old units out of the plant room and new
units into the plant room to Zonzini UK stair lifters to ensure
the utmost safety at all times.
Once the new units were in place we rerouted the pipe work
including installing a new secondary circulator as the previous
system had worked from trace heating and installed the new
custom made flue assembly.
Following our works we carried out an internal main disinfection
and water sampling for legionnaires disease.
BEFORE
DURING
AFTER
Full Plant Room Refurbishment
March 2021
It was out with the old and in with the new with this site
as the whole plant room was overhauled. The Existing
heating plant was isolated, and the Gas supply was de purged.
The existing Hoval boilers and flanges removed from the
plant room and disposed from site by a specialist company
due to asbestos within the boiler flue rope seals and
plant gaskets - we are always careful to work within Health
and Safety guidelines at Hobson Heating LTD.
Once the plant room was clear we installed three banks
of Hamworthy Wessex 254/508V cascade boilers
and a bespoke, designed flue assembly.
We ran new Brugg Casaflex pipe work underground and
DN150 and DN100 welded malleable iron pipe work above
ground which was double coat painted incorporating new Grundfos pressurisation units, expansion vessels, pumps
with separate inverters and blanking plates, Duty point
dosing pots, UK plate heat exchangers, and Calmag Caldensate neutralisers incorporating
stainless steel condensate pipe work.
Upon completion we air tested the system, balanced the
valves, installed commercial inhibitor, and carried out an
internal main disinfection of the mains water supply and
branch to the newly installed pressurisation unit.
The pipe work was cladded with Phenolic insulation and
pipe jackets (rockwool on the cold water) and all valves and
assets were tagged with pipe ID tags.
Reznor Suspended Heater Replacement
July 2021
In July 2021 we removed an old Powrmatic NV40
suspended heater and flue assembly located within
the sales counter area which had failed. Due to the new
layout and size of the sales counter and open plan office
which was much smaller than the original layout we decided
to relocate the new heater to help reduce noise for both staff
and customers. We supplied and installed a Combat Elite
ducted suspended heater into the stores area and fed the
heat around the building on a split ducted system to feed
the sales counter and open plan offices as well as providing
background heat to the stores area which had previously had
no heating, in addition we incorporated two new commercial
ceiling fans in sales counter area to help circulate the air
creating even temperature distribution, as well as
potentially reducing energy bills.
