Instructions / Assembly

Page 3 of 7 Doc: IN009 Rev K
INSTALLATION INSTRUCTIONS - IN009 Rev K
RV100 P/N 23012-1, P/N 28040
RV125 P/N 23014-1, P/N 28042
RV150 P/N 23013-1, P/N 28041
RV200 P/N 23016-1, P/N 28049
1.0 Mounting
The RV Series fan may be mounted at an angle without affecting performance, although
the vertical mounting position shown in Fig. 1 is highly recommended. If the vertical
mounting position is not possible, care should be taken to avoid creating a low spot in
the fan/duct system where condensation might accumulate in the fan housing as
shown in Fig. 2. In situations where horizontal mounting is desired and condensation is
likely to occur (bathroom ventilation in cold climates) this problem might be avoided by
mounting the fan 30 degrees beyond horizontal as shown in Fig. 3.
2.0 Ducting
Any type of ducting is acceptable; however, flexible nonmetallic ducting is
recommended for easy installation and quieter operation. Insulated flexible ducting is
highly recommended in cold climates to prevent the warm bathroom air from forming
condensation in the ducting where it is exposed to colder attic air. The outlet of the fan
should always be ducted to the outside. Avoid venting the outlet of the fan directly into
an attic area. The excess moisture from the bathroom can cause damage to the building
structure and any items stored in the attic. Multiple venting points may be connected
together using a "T" or “Y" fitting. Straight, smooth runs of ducting will present the
least resistance and maximize system performance.
For quietest performance, the fan should be mounted farther away from the inlet duct,
near the outside vent. A minimum distance of 10 feet is recommended between the fan
or T/Y of a multi-intake system and intake grille(s).
3.0 Backdraft Dampers
Backdraft dampers allow airflow in only one direction, preventing cold/hot drafts from
entering the vented area and minimizing possible condensation and icing within the
system while the fan is not operating. Backdraft dampers are highly recommended at
each intake grille for bathroom ventilation in all cold climate installations.
4.0 Electrical Wiring
All wiring must be performed in accordance with the National Fire Protection
Association’s (NFPA) ”National Electrical Code, Standard #70”-current edition for all
commercial and industrial work, and state and local building codes. All wiring must be
performed by a qualified and licensed electrician. A Ground Fault Interrupter (GFI)
circuit is not required in most installations, check your local codes. Ensure that all
exterior electrical boxes are outdoor rated and properly sealed to prevent water
penetration into the box. A means, such as a weep hole, is recommended to drain the box.