General Information
900077-00, 01/2018
Innovative Hearth Products
DRL6500 Linear Direct-Vent Gas Fireplaces
9
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Approved Vent Components
These fireplaces are designed, tested and listed for operation and installation with the following vent components
only:
• Secure Vent
®
Direct-Vent System Components,
• Secure Flex
®
Flexible Vent Components, and
• Z-FLEX
®
Model GA Venting Systems listed to UL1777 and ULCS635 manufactured by Flexmaster Canada
Limited.
Use only the correct size venting (4-1/2” inner and 7-1/2” outer).
These approved vent system components are labeled for identification. DO NOT use any other manufacturer’s vent
components with these fireplaces.
Codes and Standards
These fireplaces comply with National Safety Standards and are tested and listed by PFS (Report No. 14-108) to
ANSI Z21.88 (in Canada, CSA-2.33), and CAN/CGA-2.17-M91 (CSA P4.1) in both USA and Canada, as vented gas
fireplace heaters.
These appliances comply 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.
These fireplaces are listed for installation in bedrooms, aftermarket mobile homes, and manufactured homes.
The installation must conform to local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI
Z223.1/NFPA 54—latest edition, or the Natural Gas and Propane Installation Code, CSA B149.1.
The fireplace, when installed, must be electrically grounded and wired in accordance with local codes or, in the
absence of local codes, with the National Electrical Code, ANSI/NFPA 70—latest edition, or the Canadian Electrical
Code, CSA C22.1—latest edition.
BTU Input
Table 1 - Input Rate, Gas Valves
Models
Input Rate (BTU/HR)
Natural Gas
Propane (field converted)
42”
Low
19,500
19,500
High
27,000
25,000
54”
Low
26,000
27,000
High
37,000
34,000
Table 2 - Thermal Efficiency (%)
Model
Natural Gas
Propane (field converted)
AFUE *
P4 **
AFUE *
P4 **
42”
67
61
68.5
66
54”
70.2
66.9
69.8
71.8
* AFUE is a measurement of the US Department of Energy
** P4 (EnerGuide) is a measurement of the Canadian Office of Energy Efficiency.
Gas Pressure
Table 3 - Inlet Gas Supply Pressure
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 Gas Supply Pressure
Fuel
Low
High
Natural Gas
1.6” WC / (0.4 kPa)
3.5” WC / (0.87 kPa)
Propane
6.3” WC / (1.57 kPa)
10.0” WC / (2.49 kPa)
The control valves have a 3/8” (10 mm) NPT thread inlet and outlet side of the valve (
Figure 1
).
Based on CSA P.4.1-2015
