Specifications

OPTIMA 22 11
The Optima 22
requires two flexible
gas flue liners:
Flue Collar (inlet) -
3” (76 mm) diameter
Flue Collar (outlet) -
3” (76 mm) diameter
Optional -
2” (50 mm) diameter
Caution: Only two 3” (76 mm) “FLEX-MASTER” Model GA Gas Flex Vent Liners, optional Liner Kit 22-LKF2
(or approved equivalent) and *Archgard-approved vent terminals may be used.
*Archgard-approved vent terminals are:
❖ Archgard terminal. Part # 999-INS-TK.
❖ Simpsons Dura-Vent terminal. Part #980, 923GK (adaptor with flashing) or 991 (high wind cap)
NO OTHER VENTING SYSTEM OR COMPONENTS MAY BE USED. If you are using “Dura-Vent” vertical
termination cap, follow the instructions provided with the “Dura-Vent” cap.
This appliance is designed to attach to two 3” (76 mm) co-linear aluminum flex gas liners (or an 22-LKF2
Liner Kit) running the full length of the chimney. The flue length must be a minimum of 8’ (2.44 M) and a
maximum of 35’ (10.6 M) (The exhaust vent restrictor provided with this appliance must only be used
by installing it in the exhaust collar, before attaching the flex liner, on Natural gas units with vent
heights to 20’ (6.1 M) restrictor #1 20’ and above restrictor #2). Also refer to the following page for de-
tails. The minimum flue size is 4” x 7” (100 mm X 178 mm). With a 22-LKF2 kit, minimum flue size is 6”
round Class A wood-burning chimney. DO NOT USE ANY VENT RESTRICTORS WITH THE 22-LKF2 KIT.
Masonry chimneys may take various contours which the flexible liner will accommodate, however, keep the
flexible liner as straight as possible, avoiding unnecessary bending but at all times keep a minimum of
3” (76 mm) inside bend radius.
The Air Intake Flex Liner must be connected to the inlet air collars of the termination cap and the appliance.
The Exhaust Flex Liner must be connected to the exhaust collars of the termination cap and the appliance.
(DO NOT MIX-UP THESE CONNECTIONS).
The Air intake and Exhaust connections are marked on the gas appliance. See Fig. 1.
CAUTION: To ensure that the venting path is not accidentally obstructed or punctured, the damper
of the host fireplace must be permanently disabled by either complete removal of the damper, or
welding it in its “open” position. Temporarily disabling the damper with braces, wedges, brackets,
etc., is not allowed.
VENTING INSTRUCTIONS
WARNING: Operation of this heater when not connected to a properly installed and main-
tained venting system can result in carbon monoxide (CO) poisoning and possible death.
The appliance must not be connected to a chimney flue serving a separate solid fuel
burning appliance.
Fresh Air Intake Exhaust
The Optima 22 showing the Exhaust and Fresh Air Intake locations.
These connections are labeled for you.
Fig. 1