State 520 - Manual (Page 6)

Installation
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GENERAL
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. The manifold gas pressure is preset at the factory. It is computer controlled and should not
need adjustment.
3. Maintain proper space for servicing. Install the unit so that it can be connected or removed
easily. Refer to p. 8, p.9 and p. 10 for proper clearances.
4. The electrical connection requires a means of disconnection, to terminate power to the water
heater for servicing and safety purposes.
5. If you will be installing the unit in a contaminated area with a high level of dust, sand, flour,
aerosols or other contaminants/chemicals, they can become airborne and enter and build up
within the fan and burner causing damage to the unit.
6. Particles from flour, aerosols, and other contaminants may clog the air vent or reduce the
functions of the rotating fan and cause improper burning of the gas. Regularly ensure that the
area around the unit is dust‐ or debris‐free; regular maintenance is recommended for these
types of environment.
7. Do not install the unit 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 p. 15).
INCLUDED ACCESSORIES
Check that the installation manual, the communication cable, the product registration card and the PVC
adaptor are included with the unit (the adaptor comes with the Direct Vent Indoor models only.
For details on how to connect the adaptor, refer to P.14.
1. Manual
2. Communication cable
520 (T‐H2) models only
3. Product Registration Card
4. PVC adaptor
Direct Vent Indoor models only
Qty: 1
Qty: 1
Qty: 1
Qty: 1