20
MULTIPLE INSTALLATIONS
A multiple installation of storage tanks on a single manifold or multiple manifolds is possible, using the Equa-
Flow
®
manifold system, where large volumes of hot water is required. The Equa-Flow principle will function
with storage tanks in line, around a corner or in rows back to back
(refer to the diagrams on page
21
)
.
The cold fluid and hot fluid manifolds must be designed to balance the flow from each storage tank. To
achieve this, there are basic installation requirements and principles which must be followed:
1.
The maximum number of storage tanks in a bank should be 10, however several banks of storage tanks
can be installed.
2.
The hot fluid line from the manifold must leave from the opposite end to which the cold water line enters
the manifold.
3.
The storage tanks must be of the same model.
4.
The cold fluid line, cold and hot headers and hot fluid line must be sized to meet the requirements of both
AS/NZS 3500.4 and the application.
5.
The primary flow and return lines must be sized to meet the requirements of AS/NZS 3500.4 and suit the
primary heating source. Refer to the literature supplied with the primary heating source.
6.
A full flow gate valve or ball valve (not a stop tap, as used on a single storage tank installation) must be
installed on the cold fluid branch, primary flow /return branch and hot fluid branch of each storage tank.
7.
Non return valves or pressure limiting valves must not be installed on the branch lines to the storage
tanks.
8.
All fittings, valves and branch lines must be matched sets all the way along the manifold.
9.
Sufficient space must be left to enable access, servicing or removal of any storage tank.
10.
The temperature pressure relief valve drain line from each storage tank can terminate at a common
tundish (funnel) with a visible air break at each drain discharge point (
refer to the diagram on page
21
and to
“Relief Drain Line”
on page 18).
Refer to the
Application Guide
for the most appropriate system configuration.
Содержание ST1000C6
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