Compressor Mounting
SIZES
SIZE 105 — Compressors are mounted on rails and held down by rail bolts during shipment. After unit is installed, loos- en the rail bolts to allow the rails and compressors to float free- ly on the springs located under the rails. See Fig. 56 and 57.
Gas Piping — Unit is equipped for use with natural gas only. Installation must conform with local building codes, or in the absence of local codes, with the National Fuel Gas Code (NFGC), ANSI Z223.1.
A
Size gas supply piping for 0.5 in. wg maximum pressure drop. Do not use supply pipe smaller than unit gas connection.
CAUTION
Disconnect gas piping from unit when leak testing at pres- sures greater than 0.5 psig. Pressures greater than 0.5 psig will cause gas valve damage resulting in a hazardous con- dition. If gas valve is subjected to pressure greater than 0.5 psig, it must be replaced.
Optional Staged Gas Control — The
Refer to the Unit Controls and Troubleshooting book for in- formation on configuring staged gas control.
Fig. 56 — Front View of Compressor
Mounting Rail Assembly — Size 105 Units
COMPRESSOR MOUNTING FOOT
NUT
COMPRESSOR MOUNTING RAIL
Fig. 57 — Rear View of Compressor
Mounting Rail Assembly — Size 105 Units
NOTE: All dimensions are in inches (mm).
Fig. 55 — Compressor Mounting (Sizes 030-090)
55