Water Heaters
Plumbing Chapter 5
General: M2005 - G2406 - G2448
Water heaters are required to meet all code requirements, plus manufacturers requirements.
Water Heaters General
M2005.2 G2406.2 | Prohibited Locations | |
M2005.2.1 | Water Heater Access | |
502.3 | Water heaters installed in attics. | |
503.1 P2903.9.2 | Water Shut Off Valve | |
P2801.6 | Catch Pan and drain | |
P2801.7 | Seismic Bracing | |
P2804 | (T & P) Relief Valve Requirements | |
G2408.2-3 | Impact Protection and Elevation off Floor | |
P2903.4.1-2 | Thermal Expansion Protection (secondary pressure relief) | |
P504.2 | Bottom Fed Vacuum breaker Requirements | |
P504.3 | Electrical and Fuel Disconnect | |
N1103.5.2 N1103.5.3 | Demand recirculation water heaters Requirements for insulating hot water pipes | |
P2802 | Water Heater Solar Requirements | |
P2803 501.2 | Water Heater Space Heating Requirements |
Gas Heaters
Combustion Air and venting and dilution air requirements
Sections G2006---2407---2408---2409
G2406.2 | Prohibited Locations | |
G2407.1 | Combustion air | |
G2407.5 | Appliance combustion air | |
G2407.2 | Appliance location | |
G2407.3 | Draft hood/regulator location | |
G2407.4 | Make up air required | |
G2407.5 | Indoor combustion air | |
G2407.6 | Outdoor combustion air | |
G2408.2 | Elevation of ignition source | |
G2408.2.1 | Installation in garages | |
G2408.4 | Clearance from grade | |
G2408.5 | Clearance from combustibles | |
G2409.1 | Clearance reduction allowances |
CO Vent Requirements:
Unless specified, manufacturer’s instructions should be followed. Venting code references are listed below.
Code Reference | Description |
|
G2426.1 | General requirements | |
G2426.5 | Installation Requirements | |
G2426.2 | Required connectors | |
G2426.4 | Shielding from insulation | |
G2426.7 | Protection against damage | |
| ||
SECTION G2427 | Venting of appliances | |
G2427.3.5 | Above air handling spaces | |
G2427.4 | Vent type required for appliance category (I.E. Type 1 or Type 4) | |
G2427.4.1 | Plastic Vent Pipes | |
G2427.5.4 | Chimney roof terminations | |
| ||
G2427.6.4 | Gas vent roof terminations | |
G2427.6.7 | Exterior wall terminations | |
G2427.6.5 | Minimum height requirements | |
G2427.7.1-13 | Single wall vent pipe | |
G2427.10.3 | Vent connector requirements | |
G2427.12 | Draft hoods and controls | |
G2429 | Direct vent and integral vent systems |
Gas lines for appliances
G2419.4 (408.4) Sediment trap
SECTION G2420 SHUTOFF VALVES
APPLIANCE GAS CONNECTIONS
G2422.1 Connecting appliances
G2422.1.1 Protection from damage
G2422.1.2.3 Prohibited locations and penetrations
