2
25 1/4
6 1/4
LEFT SIDE
FRONT
COMBUSTION AIR INTAKE FITTING
(2 PVC)
JUNCTION BOX FOR 120V. POWER
& 24 V THERMOSTAT LEADS
VENT TEE
(2 CPVC)
4 7/16
TOP
OPENING FOR RELIEF VALVE
DISCHARGE PIPE
OPENING FOR AIR VENT
AND EXPANSION TANK
CONNECTION
STANDARD
SUPPLY & RETURN OPENINGS
1 1/4 NPT CONNECTIONS
PROVIDED INSIDE BOILER
CABINET.
32 5/16
40 1/4
CONDENSATE DRAIN
FITTING (1/2 PVC)
LEVELING FEET
RIGHT SIDE
BACK
VENT CONNECTION (2 CPVC)
20 1/8
GAS SUPPLY OPENING
(1/2 NPT)
A04049
Fig. 1
---
Boiler Jackets
10. Proper through the wall or through the roof combustion
venting shall be in accordance with the materials and
methods described in this manual. Installation must
comply with local codes.
11. This boiler and related hot water heating systems are not
do--it--yourself items. They must be installed and serviced
by qualified professionals.
PERSONAL SAFETY AND INSTALLATION
HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
This boiler has been designed for residential
installations. If used for commercial applications, any
additional code requirements must be adhered to for
installation. This may require additional controls
including, but not limited to, a low water cut off,
manual reset high temperature limit, and wiring and/or
piping modifications. The manufacturer is not
responsible for any installation changes made to boiler
installation which are not described or acknowledged in
this manual.
!
WARNING
INTRODUCTION
This appliance is a gas--fired direct vent cast aluminum hot water
boiler. A revolutionary cast aluminum heat exchanger means
better heat transfer and thermal storage than similarly sized cast
iron boilers, which results in higher efficiency. The heating
system water absorbs large amounts of heat from the cast
aluminum heat exchanger, cooling the flue gases and causing
condensation. Sealed combustion, premix gas burner, and low
flame temperature means drastically reduced CO and NOx
emissions, which contribute to a cleaner and healthier
environment.
This appliance, unlike normal residential atmospheric and
induced draft units, takes its combustion air directly from the
outdoors (sealed combustion) and does not compete with
building occupants for fresh air. Sealed combustion (also known
as “direct vent”) is the safest and best way to obtain plenty of
clean combustion air. The forced draft fan draws in the outside
combustion air to mix with gas, which flows into the pre--mix
burner and combusts. The fan then forces the resulting flue gases
from the boiler unit and provides a positive removal of the flue
gases from the building through inexpensive and readily available
PVC and CPVC pipes.
BOILER RATINGS AND CAPACITIES
Ratings shown are for sea level applications. (See Table 1.) The
boiler automatically derates input as altitude increases, at 4
percent for every 1000 feet above sea level. No alterations to
boiler are required for altitudes above sea level.
These low pressure gas--fired hot water boilers are design certified
by CSA International, for use with natural and propane gases.
The boilers are constructed and hydrostatically tested for a
maximum working pressure of 50 psig (pounds per square inch
gauge) in accordance with ASME (American Society of
Mechanical Engineers) Boiler and Pressure Vessel Code Section
IV Standards for heating boilers.
The Boilers are certified in accordance with ANSI (American
National Standards Institute) Z21.13 standards as gas--fired, direct
vent, condensing, hot water boilers.
The
Heating Capacity
indicates the amount of heat available
after subtracting the losses up the stack. Most of this heat is
available to heat water. A small portion is heat loss from the
jacket and surfaces of the boiler, and it is assumed that this heat
stays in the structure. The
Net I=B=R Rating
represents the
portion of the remaining heat that can be applied to heat the
radiation or terminal units (i.e. finned tube baseboard, cast iron
radiators, radiant floor, etc.). The difference between the Heating
Capacity and the Net I=B=R Rating, called the piping and pickup
allowance, establishes a reserve for heating the volume of water
in the system and offsetting heat losses from the piping. The Net
I=B=R Ratings shown are based on a piping and pickup factor of
1.15 in accordance with the I=B=R Standard as published by the
Hydronics Institute. The Net I=B=R Rating of the boiler selected
should be greater than or equal to the calculated peak heating load
(heat loss) for the building or area(s) served by the boiler and
associated hot water heating systems. The manufacturer should be
consulted before selecting a boiler for installations having
unusual piping and pickup requirements.
