Service manual

4
FCX INSTALLATION AND SERVICE MANUAL
INTRODUCTION - INSTALLATION
II. INSTALLATION
4 - PRODUCT STANDARD RATINGS
Ratings for Model FCX are provided in the following table:
Performance Product
Parameter Units Rating
Rated Input BTUH 81,250
Rated Output BTUH 76,000
Combustion Chamber Length Inches 8.98
Combustion Chamber Diameter Inches 11.5
Combustion Chamber Volume Cu. Inches 915
Combustion Prod. Circuit Volume Cu. Inches 3051
Flue Pressure Drop Inches H2O 0.10
Max Heating Service Pressure Psig 43.5
Max Heating circuit water temp Deg. F 176
Water Overheating Safety
Thermostat Setting Deg. F 230
Combustion Prod. Overheating
Safety Thermostat Setting Deg. F 248
Heating Circuit Water Capacity Gallons 4.23
Primary Water Flow Rate
(60/80 deg. C) Gal/hr 254
Water Pressure Drop
(at nominal flow rate) MCE 1.4
Power Absorbed (with burner,
without circulator) KW 0.2
Packaged Weight Lb. 267
Ratings are for the
heating system when connected to standard
option coaxial flue system components.
Electrical Power Supply 115 volts, single phase, 60 Hz
Full Load Current 2.0 Amps FLA
Max Fuse/ Circuit Breaker Size 15 Amps
5 - DIAMETER OF PIPE CONNECTIONS
Connection Diameter Units
Combustion Products 3.15 / 4.92 Inch
Water Heating Supply/Return 1 Inch
Domestic Hot Water or
Second Heating Circuit 1 Inch
Condensate Drain 1 -1/2 Inch
Heating Water Drain 1/2 Inch
Air Bleed 3/8 Inch
Safety Pressure Relief Valve 3/4 inch
• Remove the control panel
escutcheon molding (2) by
grasping it on both sides
and pulling it outward
towards you and up. The
escutcheon will come free
of the attachment clips
leaving the control panel
exposed.
1 - OPENING THE UNIT
To open Model FCX to access for installation, and/or service,
• Remove the top cover of the unit (A) by lifting the cover at the
front and rear to free the attachment clips, and then simply
lift the cover straight up and off.
• Remove the front panel attachment screws (P), then pull the
front panel (J) outward towards you at the top to free it from
the attachment clips. Lift the panel up to free it from the
lower attachment pins, and simply lift the panel off.
follow these
steps :
Fig. 4
2 - LOCATION OF THE UNIT
Model FCX is a free standing (floor mounted) appliance suitable
for installation on combustible flooring. It is approved for
installation with zero clearance to combustible walls, ceiling,
doors, etc from the cabinet. Standard option coaxial flue
components are suitable for installation with zero clearance
to combustible materials.
These are operating clearances and it is recommended that
additional clearances be considered:
• Sufficient clearance should be provided in back of the unit to
facilitate installation and maintenance of water, electrical,
flue and condensate drain connections and components.
• Sufficient clearance over the top of the unit should be provided
to allow the top to be removed for service.
• Sufficient clearance from the front of the unit should also be
provided to facilitate adjustments and service.
There is no need for additional clearance to either side of the
unit since there is no access to the unit from either side.
Alternative access measures such as doors, removable wall
panels, etc. may be provided if desired.
Choosing the location should also take into account the total
flue length to the outdoors (See Flue Connection and Routing).
In addition, the choice of location should consider the location
of utilities such as electrical supply and sewer access for
condensate drainage. Location and routing of water lines is, of
course, a significant part of the choice. While Model FCX can be
installed in an enclosure such as a closet, ventilation or other
means must be provided so that the enclosure temperature does
not exceed 113 deg. F (45 deg. C).