Simply to elaborate a bit on what others have stated (accurately)
The fuel meter is put in from the utilities fuel foremost below the road unto the constructing. It measures how a lot pure fuel the constructing consumes (for warmth, or on this case seemingly cooking tools) in order that the tenant or buding proprietor may be billed for fuel consumed appropriately.
The fireplace division connection, or standpipe is tremendous attention-grabbing. It tells us that this constructing is sprinklered and it connects to the sprinkler tree (which is mainly the principle sprinkler distribution heart for the constructing)
Within the occasion of a fireplace the sprinkler system and the incoming water is designed mainly to permit only a particular variety of sprinkler heads to go off. But when the hearth will get too large the incoming water might not have sufficient stress to service the system. Ie if too many heads go off and demand an excessive amount of water from the system. After which the sprinklers mainly turn into ineffective.
So what occurs is that when the hearth division comes they join their pumper truck to this standpipe. Then the opposite finish of the truck to a fireplace hydrant (which has a larger and identified stress and circulation charge). So the hearth truck is appearing as a complement to the water utility pushing water by the sprinkler system and permitting the sprinkler system to service extra heads than the municipal water would usually permit for.