11
Domestic Piping
Optional
12" Heat trap
8
1
To dishwasher if
permitted by codes
3
Cold water
inlet
4
3
3
6
9
U-Tube assembly
Fig. 2: MODULATING DELTA
Without Recirculation
Note:
All shut off valves shown in
this figure must be shut when siphon
draining the MODULATING
DELTA
Domestic Piping Diagrams
1. Mixing valve with check valve
3. Shut off valve
4. Backflow preventer or pressure reducing valve*
6. Thermal expansion tank*
8. Domestic drain valve
9. Vacuum breaker*
* Optional devices may be required by local codes or installation requirements
SMART Series Application
For applications requiring large volumes of
domestic hot water over an extended period,
the installer may include a Triangle Tube
SMART Indirect Water Heater in conjunction
with the MODULATING DELTA. (See Fig. 6
page 13)
The domestic system recirculation, if used, is
directed to the SMART Series Tank. The circu-
lator should be controlled by an aquastat.
The primary piping to the SMART Series tank
must comply with the piping methods detailed
in SECTION IV - Primary Piping or with other
recognized piping methods.
Additional information regarding domestic and
primary piping can be found in the SMART
Installation Manual.
