2 INSTALLATION
2-4
2.5 Connecting the Water Supply
It is recommended you use potable water as the water supply. Encon
®
provides the
union connections to connect your water supply according to your specifications.
A minimum pressure of 30 PSI (206.8 kPa) at the input should assure proper water
flow pattern from the shower head. The input pressure cannot be more than 80 PSI
(551.5 kPa).
The water supply pipe must be sized to provide at least 30 GPM (113.5 LPM) water
flow. The supply pipe connected to Therma-Flow
®
Plus must be either of the same
material or of a material compatible with that of the unit to avoid corrosion. The use of
dissimilar metals in the supply pipe should be avoided as this could cause corrosion
throughout the system. Steel pipe or cast iron fittings should not be used unless they
are galvanized or otherwise protected from corrosion by potable water.
To connect the water supply to Therma-Flow
®
Plus:
1. Flush the water supply piping to remove pipe thread (metallic particulate
which may become stuck in flow switch or eyewash orifice) or calcium
carbonate from the supply line.
2. It is strongly recommended you install a strainer with a clean-out valve in the
supply line. Ensure the strainer-drain connection is free flowing and freeze
protected (if necessary).
3. It is recommended that you include an isolation valve on the supply pipe in an
accessible position to shut off the water supply during maintenance. The
isolation valve should have locking mechanisms to prevent unauthorized
shutoff and should be labelled accordingly.
4. Connect the water supply to the Therma-Flow
®
Plus union connections. If
your unit includes an underground extension, connect the water supply to the
extension (see “Figure 2-2. Underground Extension With and Without Flow
Switch.” on page 2-5).
2.6 Installing Area Locator and Alarm Lights (if applicable)
Your unit may have area and alarm light fixtures. These lights help a user locate the
emergency station and provide constant illumination inside the unit. Typically, light
bulbs are not shipped with the unit by Encon
®
. However, the glass globe (clear,
green, blue, or red) and protective light guard are shipped with the unit and require
installation. Install the bulbs into the exterior and interior light fixtures, then install the
color or clear glass globe over the bulb by screwing it into the fixture grooves. Install
the protective light guard over the globe by screwing it into the fixture grooves. See
“Figure 2-3 Typical Light Fixture” on page 2-5.
