Gentherm P-5050, Руководство по эксплуатации, Страница: 32 / 98

Gentherm Global Power Technologies 4-14
P-5050 62553 rev.8
4.7 Intake and Exhaust Flame Arrestors
The Model P-5050 and P-5100 are provided with flame arrestors (FA). The natural gas
fueled Model P-5050N TEG and natural gas and propane fueled Models P-5100N and
P-5100L TEGS with Flame Arrestors have been tested in compliance with API Recom-
mended Practice 12N, for the Operation, Maintenance and Testing of Firebox Flame
Arrestors as it applies to continuously run, gas fired, natural draft burners. Gentherm
Global Power Technologies (GPT) considers compliance with API 12N as evidence that
the Flame Arrestors are adequate for use in unclassified areas.7
The P-5050 L operating on propane does not meet the requirements of API 12N and is
not recommended for applications requiring flame arrestors however GPT believes the
addition of a factory installed flame arrestor still provides enhanced safety, and as such,
includes a factory installed flame arrestor on all Model P-5050 TEGS.
It must be noted that if an area is defined as hazardous (i.e. may contain hazardous gas-
es such as in a Class 1, Division 2 area) then TEG models 1120 & 1500 are the only GPT
TEGs suitable for installation in these hazardous areas. The addition of a flame arrestors
does not make the Models P-5050 N, P-5100 N and P-5100 L TEGs suitable for use in a
hazardous area. For hazardous area use, TEGs require reduced surface temperatures
(below hazardous gas ignition temperatures), addition of air intake and exhaust flame
arrestors, and other modifications.
It is the customers responsibility concerning the installed location and operation of a
TEG (with or without a flame arrestor), and installations should comply with all applicable
regulations.
The flame arrestors do not require maintenance other than cleaning the intake screen as
seen in Section 9.3.1.
4.8 Optional VSR Terminal Block
An optional wiring harness with terminal block can be provided for easy access to the
voltage sensing relay and current sense connections. This terminal connects to the reg-
ulating limiter VSR1, VSR2, and current sense outputs to a terminal block on the inside
of the TEG cabinet. This option provides #6 screw terminals and will take up to wire size
#10 AWG with an appropriate ring or fork terminal.