Rheem Solar Hiline Water Heater, Руководство пользователя и инструкции по установке

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36
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 system, where large volumes of hot water are required. It is
recommended the electrical heating units of Rheem solar Hiline water heaters installed in a multiple
installation, not be connected to a power supply. Rheem 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.
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 8, 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 (funnel) with a visible air break at each drain discharge point (refer to the
diagram on
page 37 and to “Relief Drain Line” on page 32).
Refer to the
diagram on page 37 for installation and plant layout details.