Riello Array AR 1000 - Gas Supply Piping

21
INSTALLATION
− Reconnect the condensate line to the top of the trap and
securely tighten the hose clamp.
Floating ball
Fig. 18 Reconnect the top connection
− Start the boiler.
NOTE
Repeat this procedure for each condensate trap. It is critical for
bottom modules of AR 1500 (module 3) and AR 2000 (module 4).
Nuisance lockouts may occur if these traps are not completely
lled.
The recommended procedure for lling the siphon at the bottom of
the vertical ue manifold before the start-up or after a prolonged
shutdown is described below:
− Before connecting the external exhaust venting to the
boiler, access the top panel, remove the protective cap from
the ue exit and pour water into it.
− Keep lling the siphon (at least 8 oz. of water are required)
until some water starts owing from the condensate drain
exit.
Fill the syphon
with water
Syphon
Fig. 19 Filling the siphon
4.12 Gas Supply Piping
Array AR 1000, AR 1500 and AR 2000 boilers contain a 1.5 inch NPT
gas inlet connection on the top of the unit as shown in Fig. 11.
9
WARNING: Never use matches, candles, ames or other
sources of ignition to check for gas leaks.
9
CAUTION: Many of the soaps used for gas pipe bubble-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 the removal of any covers, inhibit service and/or maintenance,
or restrict access between the unit and walls, or another unit.
− Prior to installation, all pipes should be de-burred and
internally cleared of any scale, metal chipss, oil, water or
other foreign particles. Do not install any exible connectors
or unapproved gas ttings. Piping must be supported only
from the oor, ceiling or walls, 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. At no time
should the gas pressure applied to the unit exceed 13.5”
w.c. Leak test all external piping thoroughly using a soap
and water solution or suitable equivalent. The gas piping
used must meet all applicable codes.