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Pre-installation continued-
DOMESTIC HOT WATER PRIORITY
Two options are available, Priority and Non-Priority.
1. Priority – Demand for space heating is interrupted or
postponed until the domestic hot water demand is satisfied.
This option provides maximum delivery of domestic hot
water. Priority is recommended when:
a)
Boiler net output is 100,000 Btu per hour or less, or
b) When boiler output required to satisfy domestic hot
water demand is at least 50% of the boiler output
required to satisfy space heating demand, or
c)
When an interruption in space heating can be tolerated
during a long domestic hot water draw.
2.
Non-Priority – Boiler output is divided between space
heating and domestic hot water heating. Delivery of
domestic hot water can be reduced during simultaneous
space and domestic hot water heating operations,
depending on such factors as boiler output, boiler over-
sizing, number of space heating zones calling for heat, and
the ratio of domestic hot water load to space heating load.
Component Location
This water heater must be located in an area where leakage of the
tank, water line connections, or the temperature and pressure relief
valve will not result in damage to the area adjacent to the water
heater or to lower floors of the structure. When such locations
cannot be avoided, a suitable drain pan must be installed under the
water heater. The drain pan depth must be suitable for draining and
collecting water. The drain pan can be purchased from your
plumbing professional. The drain pan must be piped to an adequate
drain. The piping must be at least ¾ inch in diameter and pitched
for proper drainage.
CAUTION
16
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