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Water Piping
(Section 3.11)
We recommend that you always use a primary/
secondary piping configuration (see below for a basic
configuration).
①
Closely-spaced tees: install tees with straight piping
(minimum lengths are shown in pipe diameters), tees
maximum four pipe diameters apart with no restrictions
between fittings
In the case of hard water, use distilled or purified
water (but not reverse-osmosis). Glycol systems
must use propylene glycol. For large volume
systems, the optimum hardness is 0.6 to 1 grain.
Water Chemistry Allowable Limits
Acidity pH
Chloride
Iron
Copper
Conductivity
Water Hardness
•
Place air separators at the highest point.
•
Install the pressure relief valve on the outlet
piping of the boiler in a vertical position. Do not
use an isolation valve between the boiler and
relief valve.
•
Support all piping with appropriate piping
brackets.
•
Plumb an appropriately sized expansion tank and
make up the water station into a fitting on the
suction side of the circulator.
•
Size boiler piping and pump for the BTU output of
the boiler.
For non-oxygen barrier piping systems, use a dirt
separator and/or a side-stream filter. Ensure that the
system is free of iron components, and treat with an
inhibitor.
Electrical
(Section 3.13
1. Connect the boiler to a dedicated (max.)15
Amp breaker.
2. Wire incoming 120 VAC to the black and white
wires labeled "AC In" in the field wiring box.
3. Ensure that the boiler is properly bonded
(grounded).
4. Refer to the "Wiring Diagrams" section in the
Installation and Operating Instructions manual
6.6 - 8.5
< 125 mg/l
< 0.3 mg/l
< 0.1 mg/l
< 400μS/cm (at 77°F / 25°C)
0.6 to 1.75 grains/ gal
)
Electrical continued
(Appendix) for more information.
5. Wire the respective load pumps into the TB1
Terminal; for example, P/V 1, 2, 3, 4.
6. Wire thermostats or end switch dry contacts to
Therm 24 Vac, and then connect the other wire
to Therm 1, 2, 3, 4 corresponding to load pumps
P/V 1, 2, 3, 4.
7. No wiring is necessary for the On-Demand DHW
load.
• For multiple-boiler setup, use a secondary loop sensor.
• For zone valves or external peripherals such as wi-fi
thermostats, use external transformers.
Note: If a load is defined as Reset Heating, the
outdoor sensor is needed for proper operation.
Load Setup
1. On the V-10 Touchscreen controller bottom
navigation bar, tap the Setup icon
2. Select a load and then select the load type.
3. Accept the defaults, or change any of the
settings.
You can find more substantial settings in More >
Advanced Setup
4. Tap the Save button.
Manual Pump Purge
After the system is pressurized and you have
defined loads, perform a manual pump purge to
ensure air is purged.
On the touchscreen controller, go to More> System
Settings > Site Settings>Set Manual Pump Purge
to "On">OK > Save.
The manual pump purge runs until it is turned off, or
when there is a call for heat.
Checklist
Treated water or Polypropylene glycol mixture in
the pipes.
Boiler system is pressured and flushed ≥ 8 psi.
All gas connections soap-tested for leaks and now
leak free.
Voltage supply to the boiler tested for voltage
(nominal 120 Vac), polarity, and properly
grounded.
The boiler requires a dry set of contacts in the
Therm connections, an external sensor, or
External Control signal.
Boiler power turned on.
Use "Setup" in the touchscreen controller to set up
the required loads. See above for instructions.
Steps followed in the "6.3 Commissioning" section
of the Installation and Operating Instructions
manual.
Completed the Installation & Commissioning
Report in manual - Combustion Test recorded.
Verified a CO alarm is installed and operational
)
(Section 3.13
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