Delta PG PLUS-25 - Manual (Page 22)

Domestic Piping
3. Solder the U-Tube Assembly onto the
adapter. (See Fig. 5)
4. Once the adapter has suff i c i e n t l y
cooled, re-insert the check valve assem-
bly making sure of orientation and
reconnect onto the mixing valve.
If the installation of the PERFORMANCE
PLUS requires domestic hot water for a
commercial dishwasher, the installer may
insert a tee connection between the unit and
the mixing valve to provide 140ºF domes-
tic hot water. The installer must reference
local plumbing codes to ensure if this type
of application is permissible.
The thermostatic mixing valve MUST be
installed and utilized on the PERFOR-
MANCE PLUS. Removal of the thermo-
static mixing valve will result in severe
personal injury or death.
The manual valve on the U-Tube assem-
bly must remain in the full open position
for proper operation of the thermostatic
mixing valve.
Domestic Drain Valve
- The installer must install a drain valve
and drain leg as shown in Fig. 6 page
17 or Fig. 7 page 18.
- The drain valve should be positioned
close to the floor to aid in the siphon
action required to drain the inner tank.
Multiple Units Installation
For applications using multiple units the
domestic piping should be piped using a bal-
anced manifold arrangement.
The installer should remove the thermostatic
mixing valve from the units and install a single
thermostatic mixing valve at the outlet of the
hot water manifold. The thermostatic mixing
valve should be sized according to the required
flow rate and pressure drop. Refer to the ther-
mostat mixing valve manufacturer specifica-
tion and installation instructions for more
details.
Reference Fig. 8, page 18 for piping diagram.
Storage Tank Application
For applications requiring large volumes of
domestic hot water in a relative short period the
installer may include a storage type tank (see
Fig. 9 page 19) in the domestic piping. The
installer must:
1. Relocate the thermostatic mixing valve
from the PERFORMANCE PLUS to
the outlet of the storage tank.
2. Provide recirculation from the storage
tank back to the PERFORMANCE
PLUS using a bronze type circulator.
Maximum recommended flow rate is 5
to 10 gpm.
CAUTION
DANGER
16
Fig. 5: Mixing Valve Assembly