General Information
900697-00E 10/2018
Innovative Hearth Products
Altair™ Series Direct-Vent Gas Fireplaces
9
BTU Input
Table 1 - Input Rate (BTU/HR), Gas Valves
Models
Natural Gas
Propane Gas
High Rate
Low Rate
High Rate
Low Rate
40” Models
28,000
20,000
25,000
18,000
45” Models
31,000
21,000
31,000
20,000
† 12,000 in Ecoflow Models
Table 2 - Thermal Efficiency (%)
Model
Millivolt
Electronic
P4 *
P4 *
40” Models
49
52
45” Models
50
56
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)
Test gauge connections are provided on the front of the millivolt control valve (See Figure 1 - identified IN for the inlet
and OUT for the manifold side). The outlet
manifold
test gauge connection is provided on the valve stem of the electronic
gas valve (see Figure 2A). The
inlet
line gas pressure test point for the electronic gas valve is shown in Figure 2B. The
control valves have a 3/8” (10 mm) NPT thread inlet and outlet side of the valve.
Figure 1 - Millivolt Gas Valve
Ecoflow
H I
LO
W
HT
PT
HT
PT
PILO
T
PI
LO
T
ON
it
OFF
IN
OUT
HI/LO Variable
Flame Height
Adjustment
Manifold Pressure Tap
Inlet Pressure Tap
Pilot Adjustment
Screw
Main Gas Control Knob
OFF/PILOT/ON
SIT
Some parts have been removed for clarity
1/8” Inlet line gas pressure ‘test point’ plug (in control compartment)
APPLIANCES WITH ECOFLOW VALVE
Testing Inlet line Gas Pressure (Qualified Technicians
Only):
1. Turn off gas shutoff valve and electrical.
2. Remove 1/8” plug (shown in diagram to the right).
3. Install an 1/8” nipple in place of plug.
4. Connect manometer to nipple, using an 1/8” NPT air
hose nipple/fitting.
5. Turn on shutoff valve and check for proper inlet gas
pressure.
6. Reverse steps 1-5.
Figure 2B - Ecoflow INLET Line Gas Pressure Test Point
Figure 1 - Electronic Gas Valve
Figure 2A
Based on CSA P.4.1-2015
* 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.
Manifold gas
pressure test
point (outlet)
f i r e - p a r t s . c o m
