Indoor Venting - General Requirements (Category Iv Vertical And Horizontal Requirements); Heater Clearances - General Requirements (Indoor And Outdoor Installation For Us And Canada); Direct Air Intake Cover - Pentair ETi 400 NA ASME Guía De Instalación Y De Usuario

INDOOR VENTING — General Requirements
The heater must be installed as a Category IV appliance.
Vented Appliance (Category IV) – Vertical or Horizontal
An appliance that operates with a positive vent static pressure and with a vent gas temperature that allows excessive
condensate production in the vent, see Figure 22 (page 29) and Figure 25, page 33.
If you are considering connecting this heater to a pre-existing vent system, make sure that the vent system meets the
appropriate venting requirements as given in this manual on pages 33. If not, replace the vent system. DO NOT use a
draft hood with this heater.
The heater operates with a positive vent static pressure and with a vent gas temperature less than 170° F (77° C). The
total length of the horizontal run must not exceed the length that is listed in Table 3 on page 28.
HEATER CLEARANCES — General Requirements
INDOOR INSTALLATION OR OUTDOOR SHELTER (US AND CANADA)
The following clearances must be maintained from combustible surfaces:
TOP............................... 6 in (15 cm)
EXHAUST SIDE ........... 6 in (15 cm)
HEADER SIDE ............. 6 in (15 cm)
DOOR PANELS (*) ...... 6 in (15 cm)
NOTE: (*) For service access it is advisable to allow for sufficient clearance on at least one door panel. The heater is
design certified by CSA International for installation on combustible flooring. For installation on carpeting, the heater
must be mounted on a metal or wood panel that extends at least 3 in (10 cm) beyond the base of the heater. If the heater
is installed in a closet or alcove, the entire floor shall be covered by the panel. For an outdoor shelter installation, the
exhaust must discharge into a vent pipe. Orient the heater so that the vent pipe does not interfere with adjustment of the
operator control panel.
180° Control Panel and Plumbing Orientation: The control
panel board can be installed 180 degrees on either side of the
heater, allowing for left or right side plumbing orientation for
easy access.

DIRECT AIR INTAKE COVER

The heater is supplied from the factory with a cover on the top panel for outdoor installation (see Figure 21).
Remove the outside air intake cover for outdoor shelter installation or Indoor Installation.
Rev. C 4/2017
Section 2: Installation Instructions
ETi 400 High Efficiency Pool and Spa Heater Installation and User's Guide
Operator
control
panel
Air intake cover
6 in
(15 cm)
Inlet / outlet plumbing
27
6 in
(15 cm)
6 in
(15 cm)
6 in
(15 cm)
Figure 21.