Install Instructions

22
CHAPTER 1
1.3. Boiler Freeze Protection Feature
The ControlMax (CTRLMax) boiler management sys-
tem has a freeze protection feature built in. This feature
monitors the boiler water temperature and responds as
follows when no call for heat is present:
• 46ºF [8ºC] Pump outputs congured to respond to
a CH1 Call are enabled.
• 42ºF [6ºC] Pump outputs congured to respond to
a CH1 or CH2 Call are enabled, Burner operates at
low re.
• 60ºF [15ºC] Freeze protection ends. Burner & all
pumps turn o after completing CH Post Pump Time.
• The boiler freeze protection feature is dis-
abled during a hard lockout. The burner
will not fire, but the circulators will operate.
• The boiler freeze protection feature is de-
signed to protect the boiler, not the heating
system. The boiler should be installed in a
primary/secondary piping arrangement if it
is installed in an unheated space or exposed
to water temperatures of 46ºF or less. Refer
to Chapter 4 for primary/secondary and
Chapter 10 for antifreeze guides.
• Failure to comply can result in minor prop-
erty damage, or injury.
1.4. Boiler Replacement
If the PRESTIGE Excellence is replacing an existing boil-
er, the following items should be checked and correct-
ed prior to installation:
• Boiler piping leaks and corrosion.
• Proper location and sizing of the expansion
tank on the boiler heating loop.
• The existing vent system is appropriate for the
PRESTIGE Excellence and it is correctly installed.
Refer to the PRESTIGE Vent Supplement for the
vent system requirements.
• Amount and quality of propylene glycol within
the system, if applicable.
1.5. Recommended Clearances
The PRESTIGE Excellence is approved for zero clearance
to combustibles, excluding vent and boiler piping.
• Boiler piping must be a minimum 1/4 inch from
combustible materials.
CAUTION
CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
• Reference the PRESTIGE Vent Supplement for
vent pipe clearance requirements.
It is recommended that the following clearances
be maintained for serviceability:
• Top boiler jacket - 24 inches [610 mm].
• Front - 24 inches [610 mm].
• Bottom boiler piping - 24 inches [610 mm].
• Rear - 0 inches
• Sides - 6 inches [153 mm]
When maintaining less than recommended
service clearances, some product labeling, in-
cluding the rating label, may become hidden
and unreadable.
• If the recommended clearances list-
ed above cannot be maintained
or the enclosure in which the boil-
er is installed is less than 85 cubic
feet, the space must be ventilated.
See Section 2.2 on page 4.
• When installing the PRESTIGE Excellence
in a confined space, sufficient air must be
provided to allow, under normal operat-
ing conditions, proper air flow around the
product to maintain ambient tempera-
tures within safe limits to comply with the
National Fuel Gas Code (NFPA 54 / ANSI
Z223.1)
• Failure to comply with these instructions
can result in substantial property dam-
age, serious injury, or death.
1.6. Residential Garage Installations
When installing the PRESTIGE Excellence in a residen-
tial garage, the following special precautions per NFPA
54/ANSI Z223.1 must be taken:
• Mount the unit a minimum 18 inches [458 mm]
above the oor level of the garage. Ensure the
burner and ignition devices / controls are no less
than 18 inches [458 mm] above the oor level.
• Locate or protect the unit in a manner so it can-
not be damaged by a moving vehicle.
BEST PRACTICEBEST PRACTICE
NOTICE
WARNING