In my Bridge club (public building) that can accommodate 250 or so people, if the evacuation signal starts up unexpectedly, the head warden has the job of calling the fire brigade (dial 111 in my country) and tell them what’s happening. This implies that he should simultaneously attempt to locate the cause of the alarm. So is it reasonable for a warden to call 111 at the same time as attempting to locate the fire. If so, then if the warden discovers that the fire is in the laundry or toilets and is small enough to be tackled with a fire extinguisher, can he prioritise using the fire extinguisher ahead of talking to the fire brigade on the phone? I’m fairly sure that if the evac signal sounds, the fire brigade will have been automatically notified - in which case, how important is it for the warden to call the fire brigade and tell them that there is/ is-not a fire? When a playing session is in progress, there are people other than the head warden whose job is to check that the toilets and laundry are clear of people.
Hello!
Off the top of my head, 111 is the emergency number for New Zealand, so I’ll use their code here. (If you’re in another country, please correct me.)
We certainly don’t have a lot of members from NZ, so welcome.
If I’m understanding this part of the New Zealand Building Code correctly, your system probably is monitored. (especially since according to what you’ve posted, your facility doesn’t appear to have a constantly attended location.)
If you’re not sure, ask your service company - they’ll be able to answer.

Note: There might be other regulations that apply here.
Yes, New Zealand. Thanks.