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GENERAL
1
GENERAL
The
R
Array AR 3000 and AR 4000 MBH Boilers are modulating
and condensing units. They represent a true industry advance that
meets the needs of today's energy and environmental concerns.
Designed for application in any closed loop hydronic system, the
Array's modulating capability matches energy input directly to
fluctuating system loads. The turn down ratio for these models
is 30:1 for AR 3000 and 40:1 for AR 4000. These Array models pro-
vide extremely high efficiency operation and are ideally suited for
modern low temperature, as well as, conventional heating sys-
tems.
The Array Models AR 3000 and AR 4000 operate within the follow-
ing input and output ranges:
Input Range (BTU/hr.)
Array
model
Minimum
Maximum Minimum
AR 3000
100,000
3,000,000
AR 4000
100,000
4,000,000
(*) The output of the boiler is a function of the unit's firing rate,
return water temperature and BTU content of gas supply.
Array Series of hot water boilers has been designed in compliance
with the CSD-1 code.
When installed and operated in accordance with this Instruction
Manual, these boilers comply with the NOx emission standards
outlined in:
South Coast Air Quality Management District (SCAQMD), Rule 1146.2
Whether used in singular or modular arrangements, the AR 3000
and AR 4000 offer the maximum venting flexibility with mini-
mum installation space requirements. These Boilers are Category
IV, positive pressure appliances. Single and/or multiple breeched
units are capable of operation in the following vent configura-
tions:
− Conventional, Vertical Conventional,
− Sidewall Conventional, Direct Vent,
− Vertical Sealed, Direct Vent, Horizontal
These boilers are capable of being vented utilizing PP , CPVC, Stain-
less steel AL29-4C vent systems.
The Array's advanced electronics are available in several selectable
modes of operation offering the most efficient operating methods
and energy management system integration.
9
IMPORTANT: Unless otherwise specified, all descriptions and
procedures provided in this Installation & Operation Manual
apply to the Array series of boiler.
Output Range(*) (BTU/hr.)
Maximum
96,100
2,883,000
96,100
3,844,000
4
1.1 Warnings & cautions
Installers and operating personnel MUST, at all times, observe all
safety regulations. The following warnings and cautions are gen-
eral and must be given the same attention as specific precautions
included in these instructions.
In addition to all the requirements included in this
tion Manual, the installation of units MUST conform with local
building codes, or, in the absence of local codes, ANSI Z223.1 (Na-
tional Fuel Gas Code Publication No. NFPA-54) for gas-fired boilers
and ANSI/NFPASB for LP gas-fired boilers.
Where applicable, the equipment shall be installed in accordance
with the current Installation Code for Gas Burning Appliances and
Equipment, CSA B149.1, and applicable Provincial regulations for
the class; which should be carefully followed in all cases.
Authorities having jurisdiction should be consulted before instal-
lations are made.
See pages 10 - 11 for important information regarding installation of
units within the Commonwealth of Massachusetts.
9
IMPORTANT: This Instruction Manual is an integral part of the
product and must be maintained in legible condition. It must
be given to the user by the installer and kept in a safe place
for future reference.
9
WARNING: Do not use matches, candles, flames, or other
sources of ignition to check for gas leaks.
9
WARNING: Fluids under pressure may cause injury to person-
nel or damage to equipment when released. Be sure to shut
off all incoming and outgoing water shutoff valves. Careful-
ly decrease all trapped pressures to zero before performing
maintenance.
9
WARNING: Before attempting to perform any maintenance on
the unit, shut off all gas and electrical inputs to the unit.
9
WARNING: The exhaust vent pipe of the unit operates under
a positive pressure and therefore must be completely sealed
to prevent leakage of combustion products into living spaces.
9
WARNING: Electrical voltages up to 230 vac maybe used in this
equipment. Therefore the cover on the unit's power box (lo-
cated behind the front panel door) must be installed at all
times, except during maintenance and servicing.
9
CAUTION: Many soaps used for gas pipe leak testing are cor-
rosive to metals. The piping must be rinsed thoroughly with
clean water after leak checks have been completed.
0
CAUTION: DO NOT use this boiler if any part has been under wa-
ter. Call a qualified service technician to inspect and replace
any part that has been under water.
R
Instruc-
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