PVI Industries Domestic Water Heater - Manual (Page 2)

PV 6373b 6/01 2
SPECIFICATION FOR DOMESTIC WATER HEATERS
Instantaneous, U-tube Water Heaters with Nickel-Plated Shell
And Boiler Water as the Energy Source
(continued)
Boiler Water Controls
Inlet boiler water is introduced to the heat exchanger through an on/off boiler water pump. Pump is activated and de-
activated as instructed by a microprocessor-based temperature monitoring device with a “feed-forward” flow and
temperature sensor submerged near the hot outlet of the shell. Tank temperature may be continuously blended by an
intra-tank circulating loop. Components will work together to maintain outlet water temperature within 5 degrees of
setpoint.
Safety Controls
As a minimum, the heater will be equipped with the following:
•
a microprocessor-based temperature monitoring device and boiler water pump activator
• an
immersion temperature sensor
• an
immersion operating thermostat
• an immersion temperature limiting device
•
an ASME- or AGA-rated temperature and pressure relief valve
If selected, the water heater will be equipped with the following optional equipment.
____ intratank circulating loop
____ circulating loop flow switch/low water cutoff
____ manual-reset , temperature limiting device
____ solenoid overtemperature tank purge valve
Warranty Summary
Heat exchanger will have a _____ one year, ______three-year warranty. All other heater parts will have a one-year
warranty. Storage tank will have a ten-year warranty covering manufacturing or material defects, and/or the production of
rusty water. If indicated here, the heater will also have a _____ first year or ____ long-life service policy, which will cover
replacement labor and freight costs under certain conditions. This summary is not a warranty. Consult warranty and
policies for full details. Complete copies of all warranties and service policies, including all exclusions and
conditions, will be presented to the owner as part of the submittal package.
(continued)