Innovation - Edge [i] Installation, Operation, Maintenance Manual
CHAPTER 2
– INSTALLATION
OMM-0143_A
• GF
-216
•
9/6/2019
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2.10 GAS SUPPLY PIPING
The minimum, nominal and maximum allowable gas pressures are listed in the
Innovation-Edge
Gas Supply Design Guide
(TAG-0091, GF-5036). This guide must be consulted prior to
designing or installing any gas supply piping.
WARNING!
NEVER USE MATCHES, CANDLES, FLAMES OR OTHER SOURCES OF IGNITION TO
CHECK FOR GAS LEAKS
.
CAUTION!
Many soaps used for gas pipe leak testing are corrosive to metals. Therefore, piping must be
rinsed thoroughly with clean water after leak checks have been completed
.
NOTE:
All gas piping must be arranged so that it does not interfere with removal of any covers,
inhibit service/maintenance, or restrict access between the unit and walls, or another unit.
Innovation units contain a Natural Gas inlet connection on the rear of the unit. The location of
the gas inlet is shown in Figure 2.7, above.
Inlet Connection
Innovation Model
1.5 Inch (3.8 cm) Natural Gas
All INN models
Prior to installation, all pipes should be de-burred and internally cleared of any scale, metal
chips or other foreign particles. Do Not install any flexible connectors or unapproved gas
fittings. Piping must be supported from the floor, ceiling or walls only and must not be supported
by the unit.
A suitable piping compound, approved for use with natural gas, should be used. Any excess
must be wiped off to prevent clogging of components.
To avoid unit damage when pressure testing gas piping, isolate the unit from the gas supply
piping.
The gas pressure applied to the unit should never exceed 14
” W.C. (3.49 kPa)
.
Leak test all external piping thoroughly using a soap and water solution or suitable equivalent.
The gas piping used must meet all applicable codes.
2.10.1 Gas Supply Specifications.
The gas supply input specifications to the unit for Natural Gas is as follows:
•
The
maximum
static pressure to the unit must not exceed
14” W.C. (3.49 kPa)
.
•
The
minimum
pressure for Natural Gas is
4.0” W.C. (1.0 kPa)
.
•
The gas supply pressure to the unit must be of sufficient capacity to provide the following
while maintaining a recommended (nominal) gas pressure of
7“ W.C. (1.74 kPa)
with
the unit
operating at maximum capacity:
o
INN 600N: 625,000 BTU (183 kW)
o
INN 800N: 800,000 BTU (234 kW)
o
INN 1060N: 1,060,000 BTU (311 kW)
o
INN 1350N: 1,350,000 BTU (410 kW)