Connect The Gas Line; Water System Operation - Bock Water heaters ezFIT Installation And Operation Instruction Manual

CONNECT THE GAS LINE

Do not use this water heater with any gas other than the type listed on the rating label.
Check the rating label on the front of the water heater and make sure the gas to be used
matches the gas stated on the rating label. Consult your local gas company or Bock Water
Heaters with any questions.
A manual gas valve, a union, and a sediment trap should all be provided in front of the gas
valve. All gas piping must conform to local codes and/or the National Fuel Gas Code; ANSI
223.1/NFPA 54 (Latest Edition).
Supply piping should be sized according to the charts found in the National Fuel Gas Code
for natural gas applications.
Note: When sizing the gas piping to the heater, make sure that the pressure at the valve is
sufficient when all other appliances are operating. Undersized gas piping will reduce water
heater performance and life as well as result in nuisance lockouts. Also verify that the gas ser-
vice and meter are sized properly for the load.
Gas piping should be carried oversize, i.e.:
within 2 feet of the valve itself. This sustains pressure at the valve during start-up to prevent
flashbacks caused by momentary pressure loss. For natural gas, 5" W.C. pressure must be main-
tained upstream of the gas valve during operation. For LP gas, a minimum of 12" W.C. must be
maintained upstream of the gas valve. A
stream of the manual shut-off valve to check incoming gas pressure.
During pressure testing of the gas supply piping, close the manual gas shut-off valve to the
water heater. Test pressure shall not exceed
1
⁄ PSIG. To test at pressure greater than
2
nect the gas operating valve.
Turn on gas and inspect piping for leaks by "painting" each joint with soap and checking for
bubbles. Do not use open flame. The pipe thread compound that is used on gas piping must be
of the type resistant to propane gas. Do not use teflon tape on gas piping. Note: For high alti-
tude applications (above 2000 feet) contact Bock Water Heaters.

WATER SYSTEM OPERATION

Partially open all hot water faucets. Open cold water inlet valve to the water heater. Close hot
water faucets as they deliver water that is free of air. Start at lowest point in the building and
work upwards. Inspect for leaks.
Atmospheric Gas
CAUTION
3
⁄ inch or 1 inch or larger for
4
1
⁄ inch NPT pipe connection should be installed up-
8
1
⁄ PSIG (14" W.C). The gas valve is only rated for
2
1
⁄ PSIG, close the manual shut-off valve and discon-
2
1
⁄ inch valve to
2
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