General Information
900921-00E, 06/2019
Innovative Hearth Products
Aries™ -C Series Direct-Vent Gas Fireplaces
9
BTU Input
Gas Pressure
Table 3 - Inlet Line Gas Pressures
Fuel
Minimum
Maximum
Natural Gas
5” WC / (1.25 kPa)
10.5” WC / (2.61 kPa)
Propane
11.0” WC / (2.74 kPa)
13.0” WC / (3.23 kPa)
Table 4 - Manifold Outlet Gas Supply Pressure
Fuel
Pressure
Natural Gas
3.5” WC / (0.87 kPa)
Propane
10.0” WC / (2.49 kPa)
* AFUE is a measurement of the US Department of Energy,
** Complies with CSA P.4.1-2015 “Testing Method for Measuring Annual Fireplace Efficiency. P4 (EnerGuide) is a measurement of the
Canadian Office of Energy Efficiency.
Efficiencies are based on Normal input operation.
Inlet Pressure Port
Test gauge connections are provided on the front of the millivolt gas control valve (identified IN for the inlet and OUT for
the manifold side). The control valves have a 3/8” (10 mm) NPT thread inlet and outlet side of the valve
(
Figure 1
).
Figure 1 - Millivolt Gas Valve
Propane tanks are at pressures that will cause damage to valve components. Verify that the tanks have step down
regulators to reduce the pressure to safe levels.
The appliance and its appliance main gas valve must be disconnected from the gas supply piping system during
any pressure testing of that system at test pressures
in excess of
1/2 psi (3.5 kPa).
The appliance must be isolated from the gas supply piping system by closing its equipment shutoff valve during
any pressure testing of the gas supply piping system at test pressures
equal to or less than
1/2 psi (3.5 kPa).
SIT - Millivolt
Table 1 - Input Rate (BTU/HR), Gas Valves
Models
Natural Gas
Propane Gas
High Rate
Low Rate
High Rate
Low Rate
35” Models
18,000
14,500
16,000
13,000
40” Models
21,000
16,000
21,000
16,000
45” Models
23,000
18,000
21,000
16,000
Table 2 - Thermal Efficiency (%)
Model
Millivolt
AFUE *
P4 **
Natural
Propane
Natural
Propane
35” Models
65.4
64.7
63.1
63.8
40” Models
63.2
64.3
64.2
64.5
45” Models
64.1
64.3
63.9
64.1
Based on CSA P.4.1-2015
