BrassCraft Tankless Water Heater Valves - Manual (Page 2)

Brass-Craft Mfg. , 39600 Orchard Hill Place Novi, Michigan 48375-5331
TOLL-FREE: 877.272.7755 FAX: 248.305.6011 www.brasscraft.com ©2009 Brass-Craft Mfg. 325.09 10/09
DO NOT stretch the connector to make it fit. Connector must be long enough to
allow the appliance to be positioned at its farthest anticipated connected distance
from the gas supply without stretching, twisting or bending smaller that a 1-1/2"
internal diameter (diameter of a golf ball).
• DO NOT trap connector against sharp edges or corners.
• DO NOT kink, twist or bend connector sharply.
Gas and Water leak testing:
WarnInG: Gases can be ignited by a flame or spark may result in property
damage, personal injury and/or death. To reduce the risk of a fire or explosion:
• DO NOT TURN ON THE TANKLESS WATER HEATER until all connections have been
leak tested.
• DO NOT USE matches, candles, open flames or other sources of ignition to leak
test gas connections!
• DO NOT USE motorized equipment or other sources of combustion to dissipate gas
vapors. If needed, open windows or doors to allow area to ventilate.
1. To purge the air (bleed) from the water lines, turn on a first and second floor faucet
(highest point), then turn on water supply. Valve should be in full open position to
ensure that the water heater operates properly. When water flows smoothly without
sputtering, system is purged and faucets may be shut off.
2. Then purge the air from the gas lines by turning the gas supply on first, then turn
on a gas appliance, such as a stove or dryer. Gas appliance operation will purge air
from system. NOTICE: DO NOT TURN ON THE TANKLESS WATER HEATER until you
have bled the water & gas lines and leak tested the connections.
3. Test all gas connections with leak test solution, or with clear soap and water solution;
bubbles will indicate a leak. If a leak is detected, turn off gas supply before further
tightening connections then retest. Water rinse and towel dry connector once test
is complete.
4. Wait at least 10 minutes to allow time for any vapors to dissipate. If leak test
confirms connections do not leak gas, and you do not smell any gas, THEN light
pilot(s) and turn on water heater.
WarnInG: Liquefied petroleum (L.P.) gases are heavier than air and dissipate
slower than natural or manufactured gases. Wait an additional 10 minutes to
allow time for any vapors to dissipate.
Diagnostic testing & repairs:
Diagnostic testing on the tankless water heater can be performed using the drain
valve featured on the service valves. Please refer to the water heater’s owners
manual for manufacturer’s specific testing instructions and recommendations.
WarnInG: Before removing test cap from the side-port drain valve make sure that
the handle is in the closed position (pointing 90 degrees from the outlet as shown).
Failure to close valve may result in severe burns and/or other personal injury.
Parts listing & ratings:
tankless Water Heater service Valves (tWV30 / tWV30r )
600 WOG
Operating Pressure: 125 psi
Operating Temperature: 40°F to 180°F
3/4" ID Gas connectors
(included w/ tK30rB21-18 & tK30rB21-24 tankless Water Heater Kits)
Btu Rating: 290,900
Operating Pressure: 1/2 psi maximum
Operating Temperature: -40°F to 150°F
3/4" Full-Port Gas Ball Valve
(included w/ tK30rB21-18G3 & tK30rB21-24G3 tankless Water Heater Kits)
425 WOG
ASME B16.44: Pressure up to 5 psi; Ambient temps 32°F to 125°F
ANSI Z21.15-CSA 9.1 Pressure 1/2 psi maximum; temps 32°F to 125°F
CSA Req. CR91-002: Pressures up to 2-5 psi; temps -40°F to 125°F