For your own convenience and information, please fill out the following:
CONTRACTOR/INSTALLER:
Name:
Address:
Phone Number:
Date Installed:
30
SAMPLE SPECIFICATION - GAS FIRED
Phase III
®
HM Series Gas Fired
Combination Heater HM G Model ______or
equal.
1. The Combination Heater(s) shall be
Phase III
®
Model ______ having gas
input of______ BTU/hr and a recovery
rate of ________ GPH at 100º tempera-
ture rise.
2. The construction consists of an annular
stainless steel heat exchanger with center
flueway, immersed in a primary fluid for
indirect firing.
The primary fluid - also cooling off the
base of the combustion chamber - pre-
vents a direct contact of the flame and
combustion gases with the corrugated hot
water tank. This unique design insures a
possible 180º F continuous hot water pro-
duction .
3. The heat exchanger made with high
grade stainless steel shall have a mini-
mum of 17 Square Feet of heat transfer
surface and will be corrugated. The
working pressure rating shall be 150 Psi.
4. The combination heater shall be factory -
equipped with two adjustable thermostat
at 125-180 ºF, and a safety limit aquas-
tat set at 200ºF with manual reset.
The outer tank containing the primary
fluid shall be protected by a Low Water
Cut-Off device, and a pressure relief
valve set at 30 Psi.
The inner tank shall be protected by a
150 Psi Temperature and Pressure Relief
Valve.
6. The complete unit(s) shall be insulated
with rigid polyurethane foam insulation
and installed in a steel cabinet which has
been finished with a baked enamel paint.
7. The combination heater shall be covered
by a limited Five-year warranty against
leaks and corrosion.
8. The combination heater shall be equipped
with a sealed gas burner with force draft
vent system.
