StainlessLite Commercial Commercial Duplex stainless steel option with a 25 year guarantee
S U P P L I E R S
T O
T H E
M E R C H A N T
T R A D E
F O R
O V E R
3 5
Y E A R S
Commercial options Coupling together Stainless Lite Unvented Cylinders When a cylinder over 400 litres in volume is required, the
system. Firstly, all Stainless Lite cylinders should be fitted
bespoke copper option is not the only answer. The Stainless
with the controls supplied with them and wired to comply
Lite unvented cylinders can also be coupled together to
with the requirements of the Building Regulations Approved
meet hot water requirements in commercial premises.
document G3. For example, all indirect models must be fitted with:
Using this coupling method will also provide you with;
• P & T valve
• 25 year guarantee
• Dual control and overheat safety thermostat,
• reduction in delivery lead time as the cylinders are
• Energy cut-off 2-Port zone valve
stocked nationwide
• Inlet control group consisting of pressure regulator, non-
• easier installation with two smaller cylinders compared
return valve and expansion relief valve.
to one large one
• Expansion vessel.
We have shown two recommended methods of coupling
The configuration shown in figure 1 should normally be used
together two Stainless Lite unvented cylinders, but the
when there is only one hot water distribution network in the
configurations can be extended to couple any number of
building. The cylinders coupled together in this configuration
cylinders together to install the required storage capacity.
should have the same storage capacity.
The optimum number of cylinders will depend upon the cost of multiple cylinders compared to the cost of a single large
The configuration shown in figure 2, should normally be
copper cylinder and the space available in the plant room.
used when there is more than one independent hot water distribution network in the building. Here, the cylinders
However, you will need to take into account some
coupled together can have different storage capacities
considerations when designing this type of hot water
because these supply different networks. The common
Figure 1
2
Figure 2
boiler flow and return pipe work (EF & GH) should be sized
account the diversity of use of individual hot and cold water
for the total primary design flow rate through all the cylinder
outlets supplied by the system.
heat exchangers coupled together. Similarly the mains hot water supply pipework (AB) Due to the cylinders in this configuration charging and
should be sized to take into account of the total maximum
discharging at the same time and at the same rate i.e.
simultaneous hot water demand. Normal loading factor
the diversity factor will be one. For example, if the design
methods can be used to calculate simultaneous maximum
primary flow rate through each cylinder is 0.2L/s and
demand for the system design because this method takes
the 3 cylinders are coupled together, the common boiler
into account the diversity of use of individual hot water
pipework (EF & GH) should be sized for 0.6L/s primary
outlets supplied by the system.
flow rate. Therefore mains cold water supply pipework (CD) should be sized to take into account of the total maximum
As shown in figures 1 & 2, if the tundish outlets are
simultaneous hot water demand and the balanced cold
combined, then the common discharge pipework (KL)
water demand from the system. Normal loading factor
should be sized to safely discharge the total combined flow
methods can be used to calculate simultaneous maximum
from all the cylinders linked together. For further guidance
demand for the system design. This method takes into
refer to the Building Regulations Approved Document G3.
Model Selection Guide Required hot water capacity (litres) Up to 400 500 600 700 800 900 1000 1200
Models
System configuration
Select suitable model from the standard range 2 x 250L models 2 x 300L models 1 x 400L and 1 x 300L model 2 x 400L models 3 x 300L models 1 x 400L and 2 x 300L models 3 x 400L models
3
N/A Figure 1 or Figure 2 Figure 1 or Figure 2 Figure 2 Figure 1 or Figure 2 Figure 1 or Figure 2 Figure 2 Figure 1 or Figure 2
UK Super Depot Infrastructure Blackpool Head Office and Stainless Steel Manufacturing Site
Liverpool Telephone: 0151 227 1574 Fax: 0151 236 0898
Blackburn Telephone: 01254 693844 Fax: 01254 673615
Maidstone Telephone: 01622 714770 Fax: 01622 882286
Bristol Telephone: 01179 820814 Fax: 01179 820821
Nottingham Telephone: 01773 580684 Fax: 01773 581129
Dudley Telephone: 01384 636245 Fax: 01384 413700
Paignton Telephone: 01803 557470 Fax: 01803 559213
Hemel Hempstead Telephone: 01442 862233 Fax: 01442 862234
Reading Telephone: 01189 669990 Fax: 01189 669696
Huntingdon Telephone: 01480 415980 Fax: 01480 413331
Southampton Telephone: 01329 846601 Fax: 01329 845881
Inverkeithing Telephone: 01383 414133 Fax: 01383 413123
For technical advice call 01253 474584
SUPPLIERS TO THE MERCHANT TRADE FOR OVER 35 YEARS
Gledhill Building Products Limited Sycamore Estate, Squires Gate, Blackpool FY4 3RL Tel: 01253 474550 Fax: 01253 474551 sales@gledhill.net Gledhill Building Products produce cylinders for use with a wide range of heat sources including;
Gas and oil boilers Ground source heat pumps
Electricity Solar energy
Air source heat pumps Wood burning stoves
For further information of Gledhill products can be found on the internet at www.gledhill.net
“Only the best is acceptable”
FM 2057 Gledhill cylinders are produced under an ISO 9001:2008 Quality System accepted by BSI
Due to a programme of continuous improvement Gledhill Building Products reserve the right to modify products without prior notice. It is advisable to check the product technical detail by using the latest design and installation manuals available from our technical support team or on our website. Spec 103/05 06/12