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108660-01D
4
For more information, visit www.desatech.com
For more information, visit www.desatech.com
GAS RATING - NATURAL
P324, VP324 P325(B), VP325(B)
Max. Input Rating: 15,000 Btu/Hr 25,000 Btu/Hr
Manifold Pressure: 3.5 in. WC (.87 kPa) 3.5 in. WC (.87 kPa)
Minimum Supply Pressure: 4.5 in. WC (1.12 kPa) 4.5 in. WC (1.12 kPa)
Maximum Supply Pressure: 10.5 in. WC (2.66 kPa) 10.5 in. WC (2.66 kPa)
Orifice Size: # 49 # 40
GAS RATING - PROPANE/LP
Max. Input Rating: 15,000 Btu/Hr 25,000 Btu/Hr
Manifold Pressure: 10.0 in. WC (2.49 kPa 10.0 in. WC (2.49 kPa)
Minimum Supply Pressure: 11.0 in. WC (2.74 kPa) 11.0 in. WC (2.74 kPa)
Maximum Supply Pressure: 13.0 in. WC (3.23 kPa) 13.0 in. WC (3.23 kPa)
Orifice Size: # 56 # 54
These fireplace models are vented gas fireplaces that use a millivolt
gas control valve with a millivolt ignition system. P325/VP325
models have a 5" B-vent and P324/VP324 models have a 4" B-vent.
A properly sized B-Type venting system and listed type vent cap are
not supplied but are required for proper operation. See venting
instructions on pages 8 and 9.
INTRODUCTION
These models are factory equipped for use with natural gas and must
be converted when intended for use with propane/LP gas. Conversion
kits PCBM-324 and PCBM-325 may be purchased for simple
conversion to propane/LP gas. See Accessories, page 29.
BEFORE YOU BEGIN
Before beginning the installation of your appliance, read these
instructions through completely.
This DESA appliance and its approved components are safe when
installed according to this installation manual and are operated as
recommended by DESA. Unless you use DESA approved components
tested for this appliance, YOU MAY CAUSE A FIRE HAZARD!
The DESA warranty will be voided by, and DESA disclaims any
responsibility for the following actions :
A) Modification of the appliance or any of the components.
B) Use of any component part not approved by DESA in combi-
nation with this appliance.
C) Installation and/or operation in a manner other than instructed
in this manual.
D) The burning of anything other than the type of gas approved
for use in this gas appliance.
WARNING: This gas appliance must not be con-
nected to a chimney flue servicing a solid fuel burn-
ing appliance.
WARNING: Installation of this appliance should be
done by a qualified service person well trained in the
installation of such appliances. You will also need a
building permit from your local Building and Safety
Commissioner before installing this appliance; other-
wise your insurance co. may not cover this appliance.
NOTICE: This appliance is not intended to be used as
a primary source of heat.
CAUTION: Do not connect appliance before pres-
sure testing gas piping. Damage to gas valve may
result and an unsafe condition may be caused.
The appliance and it’s individual shutoff valve must be discon-
nected from the gas supply piping system during any pressure
testing of that system at test pressures in excess of 1/2 psig (3.5 kPa).
The appliance must be isolated from the gas supply piping system
by closing its individual manual shutoff valve during any pressure
testing of the gas supply piping system at test pressures equal to or
less than 1/2 psig (3.5 kPa).
For the purpose of input adjustment two pressure taps (for IN and
OUT pressures) are provided on the gas control valve for test gauge
connections to the appliance.
The installation must conform with local codes or, in the absence of
local codes, with the current National Fuel Gas Code, ANSI Z223.1
or with the current CAN/CSA B149 Installation Codes.
This appliance complies with ANSI Z21.50-2000 and CSA 2.22-
2000 as Vented Gas Fireplaces and is listed and tested by the
Canadian Standards Association to the above test standards.
INTRODUCTION
Before You Begin