
18
LP-454 REV. 1.6.15
EXPANSION TANK AND MAKE-UP WATER
1. Ensure that the expansion tank is sized to correctly handle heater and system water volume and temperature.
Undersized expansion tanks cause system water to be lost from the relief valve, causing make-up water to be added. Eventual heater
failure can result due to excessive make-up water addition.
SUCH FAILURE IS NOT COVERED BY WARRANTY.
2. The expansion tank must be located as shown in the Piping Diagrams, or following recognized design methods. See expansion tank
manufacturer’s instructions for details.
The expansion tank must be suitable for hot potable water.
F. WATER PIPING
Pump motors should not be supported by any type of stand, due to possible misalignment of pump and motor. Failure to follow this
instruction may result in property damage or personal injury.
Never use dielectric unions or galvanized steel fittings on any domestic water or auxiliary connections. Use only copper or brass fittings.
Thread sealant must be used on all connections.
The domestic water connections must be installed in accordance to all local and national plumbing codes, or any applicable standard
which prevails. The inlet and outlet ports are
1 ½” for all models.
The water heaters are shipped with a brass drain valve located on the inside of the cabinet. The water heater is also equippe
d with a 1”
auxiliary port that can be used as a recirculation line. The auxiliary port is located between the upper and lower combustion systems.
When used, the recirculation line will increase overall heater efficiency.
If there is a backflow preventer or any type of no return valve installed in the plumbing system, you must install an additional tee on the
cold feed line to connect to a potable expansion tank.
In the hot outlet, install a suitable adapter to match the copper tubing of the plumbing system. A thermal trap or heat trap loop may be
installed here to provide additional energy savings and prevent the thermal siphoning of domestic hot water.
G. AUXILIARY CONNECTIONS
The auxiliary connections are provided to improve efficiency via recirculation. These connections must be installed in accordance with
all local and national codes or any applicable standard that prevails. Auxiliary connections are 1" on all models. Never use dielectric
unions or galvanized steel fittings. Use only copper or brass fittings. Sealant must be used on all connections. The top port is the supply
outlet and the bottom port is the return inlet.
Never connect auxiliary connections to any system that uses glycol or other solutions formulated for hydronic systems. These auxiliary
connections are to be used only in a potable water system. Failure to follow this warning could result in serious injury or death.
Содержание phoenix plus PHP199-119
Страница 32: ...32 LP 454 REV 1 6 15 Figure 15...
Страница 37: ...37 LP 454 REV 1 6 15 C INTERNAL WIRING DIAGRAM Figure 21 Stage 1 Wiring Diagram...
Страница 38: ...38 LP 454 REV 1 6 15 Figure 22 Stage 2 Wiring Diagram Not Applicable to 199kBTU Models...
Страница 39: ...39 LP 454 REV 1 6 15 Figure 23 LP 179 L...
Страница 48: ...48 LP 454 REV 1 6 15 Figure 26 LP 454 W...
Страница 49: ...49 LP 454 REV 1 6 15 Figure 27 LP 454 Y...
Страница 50: ...50 LP 454 REV 1 6 15 Figure 28 LP 454 X...
Страница 53: ...53 LP 454 REV 1 6 15...
Страница 54: ...54 LP 454 REV 1 6 15...
Страница 55: ...55 LP 454 REV 1 6 15 MAINTENANCE NOTES...