Submittal Sheet

Standards
All unit(s) shall include:
C.S.A. (Canadian Standards Association) 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
Furnace(s) section with 82% minimum efficiency provided by an indirect-fired tubular heat exchanger with
individually fired tubes for maximum heat transfer with minimal noise of flame ignition/extinction.
Venting Arrangement
The venting shall be a power exhausted arrangement. 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.
Unit Casing
The unit heater(s) casing shall be constructed of not less than 22 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.
The thermal efficiency of the unit(s) shall be a minimum of 82% efficient for all air flow ranges.
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
aluminized steel.
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 11-14" W.C. for propane gas.
The solid state ignition system shall directly light the gas by means of a direct spark igniter each time the system
is energized.
The unit gas controls shall be provided with the following:
Single-stage gas controls with a single-stage combination gas control, an ignition control. The unit fires at 100%
full fire based on a call for heat from a room thermostat.