4
1. GENERAL
Models 737AN and 737AP are certified by International
Approval Services for use in Canada and the USA.
Model 737CN is certified by International Approval
Services for use in Canada.
The installation must conform with local codes or, in the
absence of local codes, with the current CAN/CGA-B149.1
(Natural Gas) or CAN/CGA-B149.2 (Propane) installation
code in Canada or the current National Fuel Gas Code,
ANSI Z223.1 in the USA. Only qualified licensed or trained
personnel should install the appliance.
1.1 Options
1.1.1
Furnace Front
The appliance will be supplied with the design of
front facia requested when the furnace was ordered
- Standard (louvered) or Cast Iron.
1.1.2
Facia outer surrounds
The appliance will be supplied with the design of
facia outer surround requested when the furnace
was ordered.
An alternative outer surround can be retrospectively
fitted.
The designs available are:
#777FSK
4” Black beveled trim
#778FSK
2½” Contoured black trim
#779FSK
2½” Contoured champagne trim
1.1.3
#776CFK
Circulating fan kit
Operated by a variable speed control, the fan is
designed to boost the natural convection process
through the heater. This may be a desirable feature
dependent on the fireplace location and room
layout. The circulating fan may be installed during
initial appliance installation or as a retrofit at a later
date. Full installation and operating instructions are
included with the kit.
1.1.4
#770ZCK Zero clearance kit
Allows the furnace to be installed into an enclosure
constructed of combustible material.
The kit must
be used in this form of enclosure.
Enclosure framing
dimensions suitable for the kit are shown in section
2 of this manual. This zero clearance kit has been
designed to act as a “rough in” box with the
appliance model 737 purchased and/or fitted after
the walls of the enclosure and the hearth have been
fitted. Full installation instructions are included with
the kit.
1.1.5
#725 HACK High altitude conversion kit
Required for model 737AP only when installed at
altitudes between 2000ft and 4500ft. Consists of an
exchange regulator and associated connectors.
1.2 Rating
plate
The rating plate is located on a chain. It is
accessible when the control access door is open.
1.3 Rates
(Btu/h)
Altitude
(ft)
737AP 737CN,
737AN
Max. Min. Max. Min.
Input
(Btu/h)
0-2000 27,800 9,500 28,500 8,500
2000-
4500
25,045* 8,560*
Output-
Fan Off
0-2000 19,740
20,235
2000-
4500
17,782*
Output-
Fan On
0-2000 20,990
21,075
2000-
4500
18,910*
*
With #725 HACK High altitude conversion kit
1.4
Pressures (in. w.c.)
737AP
737CN,
737AN
Max. Min. Max. Min.
Supply-
Upstream
of
Regulator
14.0 11.0 10.5 5.0
Manifold-
Tapping on
Thermostat
(Appliance
full on)
9.5 9.1 3.7 3.3
1.5 Orifice
data
For verification only. Do not attempt to drill or otherwise
modify appliance input.
Model
Orifice
Type
No. of Holes
Diameter
(ins.)
737AP Pilot
Cat.
960-15
1
0.014
Front
Cat.
92-130 1
0.038
Rear Cat.
960-190 1
0.047
737CN Pilot
Cat.
960-45
1
0.023
737AN Front
Cat.
82-420
7
0.029
Rear Cat.
82-420 7
0.029
