Gas Supply - Convotherm OGB-10.10 Installation And Maintenance Instructions Manual

LEAKING GAS CAN CAUSE FIRE OR EXPLOSION. INJURY, DEATH, OR PROPERTY
DAMAGE WILL RESULT.
If the installer smells gas, or suspects there is a gas leak, immediately refer to the posted gas
leak instructions. The posted instructions are provided by the local gas supplier, and
supersede any other instructions.
Observe the following precautions in addition to the posted instructions:
•
Do not light or start any appliance.
•
Do not touch any electrical switch.
•
Do not use any phone in the building.
•
Immediately call the gas supplier from a phone away from the building. Follow the gas
supplier's instructions.
•
If the gas supplier cannot be reached, call the fire department.

5. Gas Supply

a. Gas Supply Requirements
1) Make sure gas supply type matches type of gas shown on rating plate
2) Make sure that gas supply pressure does not exceed 14" water column (1/2 psi), and
falls within acceptable gas pressure range shown below:
a) Natural gas pressure must be between 5½" – 14" water column
b) Propane gas pressure must be between 11" – 14" water column
b. Install Gas Supply Lines
Installer / owner is responsible for furnishing and installing gas supply lines, valves,
regulators, and accessories.
When installing gas supply lines and accessories, observe the following:
1). The installation must conform with local codes, or in absence of local codes, with
National Fuel Gas Code, ANSI Z223.1 / NFPA 54 (or latest edition), or Natural Gas
and Propane Installation Code, CSA B1 49.1, and any other applicable national,
state, or local codes and regulations.
2). GAS SUPPLY PRESSURE TO THE COMBI MUST NEVER EXCEED 14" WATER
COLUMN (½ psi). If the gas supply pressure exceeds 14" water column; a pressure
regulator must be installed in gas supply plumbing to reduce pressure to the Combi.
3). Refer to Figure 2-18 for the recommended layout of the gas supply lines.
4). The ¾" NPT gas inlet is on the bottom of the Combi.
5). Install main manual shut off valve between gas supply and the Combi. See Figure 2-13.
6). This valve is the Main Manual Gas Valve.
7). Install sediment trap (drip leg) in gas supply line. See Figure 2-13.
8). Use a pipe sealant resistant to LP gas.
DANGER
FIRE OR EXPLOSION HAZARD
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