15
c. Install Water Supply Lines
The installer/owner is responsible for the correct water connection of the unit. When connecting the
water supply lines observe the following instructions and all national and local codes and
regulations:
1). Never connect the unit to HOT WATER. The condenser system of the steamer will not work
properly if it is connected to HOT or WARM water.
2). The water supply should have a minimum flow pressure of 35-psi (2.4 kg/cm²) and a maximum
static pressure of 60-psi (4.1 kg/cm²). If the static pressure is above 60 psi, a pressure regulator
must be used set at approximately 50 psi. Pressure above 60 psi can damage the solenoid
valves.
3). The Gemini Steamers are supplied with two connection points for incoming water, one feeds
the condensers and the second supplies feed water to the generators. If the local water supply
is of poor quality (see Chapter 2, Section 6, Part a.1 for details of water quality), it is
recommended that treated or otherwise filtered or conditioned water be used to supply the feed
water to the generators. In the case of using a separate water supply, use the layout shown in
Figure 2-11.
4). Pay attention to the following requirements and recommendations when connecting the
steamer to the water supply:
a) Cleveland Range recommends the plumbing layout illustrated in either Figure 2-10, for
installations using a single water supply or Figure 2-11 if a separate conditioned water
supply is being used for boiler feed. Note: If using a single water feed to the system the
supply piping to the tee fitting should be of at least the next largest size of pipe to the
connection provided at the steamer.
b) The steamer has two 3/8-inch IPS fittings (Model 24CGA6.2) or two 1/4-inch IPS fittings
(Model 24CGA10.2) for the water connections to the generator and to the condenser.
These fittings are detailed as
D
and
E
in Figure 2-1 or 2-2.
c) Install a manual water valve between the main cold water supply line(s) and the steamer
supply lines.
d) The National Sanitation Foundation (NSF) requires installation of a check-valve in all supply
lines in accordance with and as required by local plumbing codes.
e) The water supply line(s) should be designed so that the unit can be moved for service.
Figure 2-10 Cleveland Range Single Water Supply Arrangement
(
*
May be installed internal to the steamer on some models)
Gemini
Steam Generator
Solenoids
Water Connection E on
Dimension Diagram
Pressure Reducer
(if required)
Main Water
Shut Off Valve
Main Cold
Water Supply
Air/Water Column
(if required)
Check Valve
Strainer
*
Condenser Solenoids
Water Connection D on
Dimension Diagram
Flow