Rheem Solar Hiline 52D180, Руководство пользователя и инструкции по установке, Страница: 47 / 56

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MULTIPLE INSTALLATIONS
A multiple installation of Rheem solar Hiline water heaters on a single manifold or multiple manifolds is
possible, using the Rheem Equa-Flow
® manifold principal, where large volumes of hot water are required.
The system may be installed with the solar water heaters as preheaters and their electrical heating units not
be connected to a power supply. Rheem commercial or heavy duty water heaters should be installed in series
with the solar water heaters to boost the water temperature during periods of poor or no solar gain.
Alternatively, the solar water heaters can be installed with their heating units connected to a power supply and
without in series booster water heaters.
The cold water and hot water manifolds must be designed to balance the flow from each solar storage tank.
To achieve this, there are basic installation requirements and principles which must be followed:
1.
The maximum number of solar storage tanks in a bank should be five (5), however several banks of solar
storage tanks can be installed.
2. The hot water line from the manifold must leave from the opposite end to which the cold water line enters
the manifold.
3.
The solar storage tanks must be of the same model.
4. The cold water line, cold and hot water headers and hot water line must be sized to meet the requirements
of both AS/NZS 3500.4 and the application.
5.
A non-return valve, isolation valve and if required a pressure limiting valve and expansion control valve,
must be installed on the cold water line to the system.
6.
A full flow gate valve or ball valve (not stop taps, as used on a single solar storage tank installation) must
be installed on both the cold water branch and hot water branch of each solar storage tank.
7. Non-return valves or pressure limiting valves must not be installed on the branch lines to the solar 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 each solar storage tank.
10.
The temperature pressure relief valve drain line from each solar storage tank can terminate at a common
tundish with a visible air break at each drain discharge point (refer to
“Relief Drain Line”
on page 44).