Water Piping - Mixing Valve Usage; Mixing Valves - Lochinvar POWER VENTED GAS HEATERS Installation And Operating Manual

WATER PIPING - MIXING VALVE USAGE

Mixing Valves

DANGER
HOT
HOT
BURN
Water heated to a temperature which satisfi es space
heating, clothes washing, dish washing, and other
sanitizing needs can scald and cause permanent injury
upon contact. Short repeated heating cycles caused by
small hot-water uses can cause a temperature increase
of the hot water by 20F° (11C°) higher than the heater's
temperature settings.
MIXING VALVE
SUGGESTED PlPING
ARRANGEMENT FOR
TOP CONNECTIONS
MASSACHUSSETTS:
INSTALL A VACUUM
RELIEF IN COLD
WATER LINE PER
SECTION 19 MGL
142.
CERTAIN
MODELS ARE
EQUIPPED WITH
SIDE PLUMBING
CONNECTIONS
FOR SPACE
HEATING. THE HOT
AND COLD FITTING
ASSEMBLlES
(PART #9001262)
CAN BE ORDERED
THROUGH THE
MANUFACTURER
GAS
SUPPLY
DRAIN
VALVE
METAL DRAlN
PAN 1.75"
(45mm) MAX.
DEPTH.
AT LEAST
2" (50mm)
GREATER THAN
THE DIAMETER
OF THE WATER
HEATER.
Figure 8
This appliance has been design certifi ed as complying
with American National Standard/CSA Standard for water
heaters and certain models with side plumbing connections
Water temperature over
125°F (52°C) can cause
severe burns instantly
resulting in severe injury or
death.
Children, the elderly and the
disabled and are at highest
risk of scald injury.
Feel water before bathing or
showering.
Temperature limiting devices
such as mixing must be
installed when required by
codes and to ensure safe
temperatures at fixtures.
TEMPERED SHUT-OFF
POTABLE WATER VALVE
COLD-WATER
INLET
TEMERATURE-
PRESSURE
RELIEF VALVE
DISCHARGE
PIPE (DO NOT
CAP OR PLUG)
TO SUITABLE
DRAIN
6" (150mm)
MAX. AIR
GAP*
* NOTE: THE
T&P VALVE
CAN BE PIPED
DIRECTLY TO
THE DRAIN
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are considered suitable for Water (Potable) Heating and
Space Heating. Note: Do not use in space heating only
applications.
The water supply pressure should not exceed 80 psi. If this
occurs, a pressure reducing valve with a bypass should be
installed in the cold water inlet line. This should be placed
on the supply to the entire house in order to maintain equal
hot and cold water pressures.
MIXING VALVE
SUGGESTED PlPING
ARRANGEMENT FOR
TOP CONNECTIONS
NON-TEMPERED
WATER SUPPLY
MASSACHUSSETTS:
INSTALL A VACUUM
RELIEF IN COLD
WATER LINE PER
SECTION 19 MGL
142.
GAS
SUPPLY
DRAIN
VALVE
METAL DRAlN
PAN 1.75"
(45mm) MAX.
DEPTH.
AT LEAST
2" (50mm)
GREATER THAN
THE DIAMETER
OF THE WATER
HEATER.
Figure 9
TEMPERED
POTABLE WATER
NON-TEMPERED
WATER SUPPLY
COLD-WATER
INLET
Figure 10
SHUT-OFF
TEMPERED
VALVE
POTABLE WATER
COLD-WATER
INLET
NON-TEMPERED
WATER RETURN
TEMERATURE-
PRESSURE
RELIEF VALVE
DISCHARGE
PIPE (DO NOT
CAP OR PLUG)
TO SUITABLE
DRAIN
6" (150mm)
MAX. AIR
GAP*
* NOTE: THE
T&P VALVE
CAN BE PIPED
DIRECTLY TO
THE DRAIN
ALTERNATIVE PlPING
ARRANGEMENT
FOLLOW THE
MIXING VALVE
MANUFACTURER'S
INSTRUCTIONS
MASSACHUSSETTS:
INSTALL A VACUUM
RELIEF IN COLD
WATER LINE PER
SECTION 19 MGL
142.
MIXING
VALVE (SET
TO 120°F
(49°C))
TEMERATURE-
PRESSURE
RELIEF VALVE
DISCHARGE
PIPE (DO NOT
CAP OR PLUG)
11