| Item | Value |
|---|---|
| Pipe material | Black steel Sch 40, threaded/welded |
| Thread sealant | Gas-rated compound or yellow Teflon tape |
| Test pressure (low-press.) | 15 psig; 15-min hold, no drop |
| Test medium | Air or nitrogen only — never gas |
| Drip leg | Required at every appliance connection |
| Labelling | Yellow “GAS” labels; engraved brass valve tags |
| Regulator vent | Terminate to exterior; never plug/restrict |
| CSST bonding | Per manufacturer & OESC requirements |
| Item | Value |
|---|---|
| Hydrostatic test | 200 psi (or 50 psi above max); 2-hr hold |
| Dry-pipe water delivery | ≤ 60 sec to inspector's test conn. |
| Std head temp rating | 68°C (most spaces) |
| Near heat sources | 79–93°C intermediate heads |
| High ceilings (>6 m) | ESFR or extended-coverage heads |
| Sanctuary aesthetics | Concealed heads w/ decorative covers |
| Item | Value |
|---|---|
| Radiant PEX spacing | 200–300 mm o.c. |
| Radiant supply temp | 30–45°C (via mixing valve) |
| Hydronic test pressure | 1.5× working or 100 psi; 2-hr hold |
| PEX pre-pour air test | 100 psi; 24-hr hold; maintain during pour |
| Glycol (freeze protect.) | 30–50% propylene glycol (food-grade) |
| Expansion tank | Bladder type; pre-charge to fill pressure |
| Air separator | Microbubble type at hottest point (near boiler) |
| Item | Requirement |
|---|---|
| Type I hood | Over grease-producing equip. |
| Type II hood | Over steam/heat only (no suppression req.) |
| Grease duct material | 16-ga carbon or 18-ga SS, cont. welded |
| Duct slope | ≥ 2% back toward hood |
| Clearance to combustibles | 450 mm (18") unless listed wrap |
| Access panels | Every direction change & ≤ 6 m |
| Fire suppression | Wet chemical; gas + fan shutoff on activation |
| Make-up air | Dedicated MAU, interlocked w/ hood |