Add Castle documentation content

- Emergency procedures (fire, medical, weather, utilities)
- Equipment guides (tractor, heating, kitchen, tools)
- Getting started (house rules, FAQ, supplies)
- Infrastructure docs (electrical, water, internet, heating)
- Spaces overview (main building, outbuildings, outdoor)

content/equipment/water-heater.md

@@ -0,0 +1,63 @@
+---
+title: Water Heater
+description: Hot water system operation and troubleshooting
+tags:
+  - equipment
+  - water
+  - utilities
+---
+
+# Water Heater
+
+## Quick Reference
+
+| Item | Details |
+|------|---------|
+| **Location** | *TBD* |
+| **Type** | *TBD (electric/gas/tankless)* |
+| **Make/Model** | *TBD* |
+| **Capacity** | *TBD* |
+
+## Temperature Setting
+
+- **Current setting:** *TBD*
+- **Recommended:** 48-60°C (120-140°F)
+- **Control location:** *TBD*
+
+> [!warning] Scalding Risk
+> Above 50°C (122°F) can cause scalding. Be cautious if setting is high.
+
+## Normal Operation
+
+*TBD: Describe how the specific water heater works*
+
+## Shutoff Locations
+
+| Type | Location | How to Operate |
+|------|----------|----------------|
+| Cold water inlet | *TBD* | *TBD* |
+| Power/Gas | *TBD* | *TBD* |
+
+## Troubleshooting
+
+| Issue | Possible Cause | Solution |
+|-------|----------------|----------|
+| No hot water | Power/pilot light | Check circuit breaker, check pilot |
+| Not enough hot water | High demand | Wait for tank to recover |
+| Water too hot | Thermostat setting | Lower temperature |
+| Strange noises | Sediment buildup | May need flushing |
+| Leaking | Various | Shut off water, call plumber |
+
+## Maintenance
+
+- **Recommended:** Annual flushing to remove sediment
+- **Last serviced:** *TBD*
+
+## Emergency
+
+If leaking significantly:
+1. Turn off water supply to heater
+2. Turn off power/gas
+3. Contact plumber
+
+See [[water-emergency|Water Emergency]]