Submittal Data Sheet

Standards
All unit(s) shall include:
ETL design certification for use in both the US and Canada to the ANSI Z83.8 - latest revision, standard for “Gas
Unit Heater and Gas-Fired Duct Furnaces” for safe operation, construction, and performance
Mechanical Configuration
Condensing furnace section with 93% minimum efficiency provided by an indirect-fired tubular heat exchanger
with individually fired tubes coupled to a secondary recuperative heat exchanger for maximum heat recovery.
Venting/Combustion Air Arrangement
The unit shall be separated combustion. The venting shall be a power exhausted arrangement with a separate
combustion air intake pipe connection to allow for fresh combustion air from outside the conditioned space. The
unit shall be tested to insure proper ignition when the unit is subjected to 40 mile per hour wind velocities. The
unit shall also include a factory mounted differential pressure switch designed to prevent main burner ignition until
positive venting has been proven.
Venting shall be Schedule 40 PVC. For Canadian installations, all vent pipe and components must be approved
to ULC S636.
Unit Casing
The unit heater(s) casing shall be constructed of not less than 20 gauge aluminized steel with minimization of
exposed fasteners.
All exterior casing parts shall be cleaned of all oils and a phosphate coating applied prior to painting. The exterior
casing parts shall then be painted with an electrostatically applied baked-on gray-green polyester powder paint (7-
mil thickness) for corrosion resistance.
The unit shall be furnished with horizontal air deflectors. The deflectors are adjustable to provide for horizontal
directional airflow control (up or down).
Furnace Section
The heat exchanger(s) shall be made of 18 gauge aluminized steel tubes and headers. Each heat exchanger
tube shall be individually and directly flame-fired. The heat exchanger tube shall be crimped to allow for thermal
expansion and contraction. The flue collector box shall be made of 20 gauge AL29-4C stainless steel.
The thermal efficiency of the unit(s) shall be a minimum of 93% efficient for all air flow ranges through the use of a
secondary recuperative heat exchanger. The secondary heat exchanger shall be constructed of AL29-4C
stainless steel to withstand the corrosive environment of condensing gas fired equipment.
The heat exchanger(s) seams and duct connections shall be certified to withstand 0.9" W.C. external static
pressure without burner flame disturbance.
The burner(s) shall be in-shot type, directly firing each heat exchanger tube individually and is designed for good
lighting characteristics without noise of extinction for both natural and propane gas.
The ignition controller(s) shall be 100% shut-off with continuous retry.
The gas pressure shall be between 6-7" W.C for natural gas.
The solid state ignition system shall directly light the gas by means of a direct spark igniter each time the system
is energized.