Indirect Gas-Fired Heat Modules
2
Burner Control Turndown
Burner turndown ratio is used in many places and must
be calculated. On the data label, locate the INPUT
BTU/HR (the largest number on the label) and also
the MINIMUM INPUT BTU/HR. Calculate the burner
turndown ratio and record it.
Burner Turndown:
_______________
NOTE
This unit is an indirect gas-fired heat module that will
be referred to in this manual as a furnace.
Receiving
Since this furnace is already installed in a ventilation
unit, follow the Receiving Instructions for the unit which
are provided in the unit-specific Installation, Operating
and Maintenance manual (IOM).
Unpacking
If unit is to be installed, tested and operated right
away, locate and remove all packing materials from the
furnace, including any protective coverings that may
be on the combustion air intake and on the furnace
exhaust. Follow
Unpacking Instructions
as found in the
unit-specific IOM.
Storage
If unit must be stored after it is received, follow the unit-
specific storage instructions found in the unit IOM. Also
plug all piping.
Unit Identification
It is necessary to know the unit model number, the
burner control turndown and the serial number. This
information is needed when ordering replacement parts
and is available on labels located on the unit.
Furnace Model Number
On the furnace access door or immediately next to the
door is a Mylar data label. See image below. Locate the
furnace model number at the top of the label and record
it here:
Furnace Model Number:
_____________________
Typical Unit ID Plate
Furnace Serial Number
The furnaces are assigned the same serial number
as the main ventilating unit. On the main unit control
access door is a stamped metal plate identifying the
unit serial number. Record that information here.
Furnace/Unit Serial Number:
_____________________
ETL Listing
Model PVF and PVG furnaces have been ETL tested
as gas-fired heat modules intended for installation as a
component within heating equipment in duct or cabinet
mounted applications.
They are ETL Recognized
Components.
INPUT BTU/HR
=
Burner Control
Turndown Ratio
MINIMUM BTU/HR
Example:
150,000
= 2
75,000
The turndown ratio is 2:1 in this example.
Model
Number
Minimum Input
BTU/HR
Input
BTU/HR
Typical Furnace Data Label
Heat
Exchangers
Collector
Box
Combustion
Blower
Burner
Assembly
Product Overview
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