Installation Instructions

Installation Manual
Page
7
1. Follow all local codes, or in the absence of local codes, follow the most recent edition of the
National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or CAN/CSA B149.1 Natural Gas,
Propane Installation Code in Canada.
2. All gas micro-boilers require careful and correct installation to ensure safe and efcient operation.
This manual must be followed exactly. Read the "Safety Guidelines" section.
3. The manifold gas pressure is preset at the factory. It is computer controlled and should not need
adjustment.
4. Maintain proper space for servicing. Install the micro-boiler so that it can be connected or removed
easily. Refer to the "Clearances" section on p. 9 for proper clearances.
5. The micro-boiler must be installed in a location where the proper amount of combustible air will be
available to it at all times without obstructions.
6. The electrical connection requires a means of disconnection, to terminate power to the micro-boiler
for servicing and safety purposes.
7. Do not install the micro-boiler where the exhaust vent is pointing into any opening in a building or
where the noise may disturb your neighbors. Make sure the vent termination meets the required
distance by local code from any doorway or opening to prevent exhaust from entering a building
(refer to the "-Vent termination clearances-" section beginning on page 17).
8. Particles from our, aerosols, clothes dryers and other airborne contaminants may clog the air
vent, build up and reduce the functions of the rotating fan, cause improper burning of the gas, or
cause damage to the micro-boiler. Regularly ensure that the area around the micro-boiler is dust-
or debris- free. Regular maintenance is recommended for these types of environments. Sealed
combustion is recommended too.
9. The Hydro Smart 120 micro-boiler is to be installed indoors only. The model is equipped with a
thermistor and hi-limit switch for the exhaust gas, detecting excess temperatures within the ue
and enabling the micro-boiler to safely stop operation if needed. These components are always
monitoring exhaust gas conditions in order to prevent heat damage to ABS, PVC, CPVC, or
Polypropylene (Plastic) venting if ABS, PVC, CPVC, or Polypropylene is used. If the exhaust gas
temperature exceeds 140°F (60°C) these components will enable the micro-boiler to safely stop
operation.
• The micro-boiler requires 3 inch, or 4 inch diameter intake air supply pipe. The intake pipe
must be sealed airtight.
• Air supply pipe can be made of aluminum exible tube, ABS, PVC, CPVC, Polypropylene,
corrugated stainless steel, or Category III/IV stainless steel. Regarding exhaust pipe, please
refer to p. 11 for detailed information.
• Sidewall venting is recommended for this boiler. Vertical venting (roof termination) is
acceptable.
• The manufacturer recommends running the exhaust vent and the intake pipe as parallel as
possible.
-General-
INSTALLATION
Installation