Installation Manual

25
HE+ Series Infrared Gas Heater Installation and Operation Manual
THIS HEATER WILL EXPAND IN LENGTH AS IT HEATS UP. It is a normal condition that dur-
ing heat-up and cool-down a tube heater will expand and contract. Some expansion is toward
the vent end, and some expansion is at the burner end. Allowances for heater expansion must
be made in the gas connection, venting and combustion air ducting. Improper installation, altera-
tion, or adjustment can result in property damage, injury or death.
The Btuh input and the tube length determine the overall expansion that occurs. A typical infra-
red tube installation will expand toward both the Burner and the vent end.
To allow heater expansion the gas supply must be installed using the flexible gas connector
supplied in the burner kit:
In the USA: a stainless steel Flexible Gas Connector certified for use on an infrared radiant tube
heater per the Standard for Connectors for Gas Appliances, ANSI Z21.24 CSA 6.10
WARNING
High Input
Rating
Btuh
Tube
Length
Feet
Approximate
System
Expansion *
in Length
USA: Mandatory
Flexible Gas Connector
ID x Length - Part #
50,000 20 1 1/4” 1/2” x 24” - 903000013
65,000 20 / 30 1 1/2” 1/2” x 24” - 903000013
80,000 20 / 30 / 40 1 3/4” 1/2” x 24” - 903000013
115,000 30 / 40 / 50 2” 1/2” x 24” - 903000013
130,000 30 / 40 / 50 2” 1/2” x 24” - 903000013
155,000 40 / 50 / 60 2 1/2” 1/2” x 24” - 903000013
180,000 50 / 60 / 70 2 3/4” 1/2” x 24” - 903000013
205,000 50 / 60 / 70 3 1/4” 1/2” x 24” - 903000013
225,000 60 / 70 / 80 3 1/2” 3/4” x 36” - 903000061
250,000 60 / 70 / 80 4” 3/4” x 36” - 903000061
IMPORTANT: See next page: orientation of flexible gas connector between heater and gas supply.
TABLE 5: HEATER LENGTH EXPANSION & GAS CONNECTOR TYPE / SIZE
HEATER EXPANSION
* Expansion is split in direction between the burner and vent ends