VENT-FREE CONTEMPORARY FIREPLACE HEATERS
All ALTERNA VF sets are certified to two standards: ANSI Z21.11.2 (Unvented Room Heaters) and ANSI Z21.60 (Vented Decorative Appliance). For use in indoor wood-burning fireplaces or approved vent-free firebox enclosures. They may be used with the damper open, closed or anyplace in between. Vent-Free sets are supplemental zone heaters - they are not intended for continuous use or whole house heating.
Glass doors must be wide open when burning for proper ventilation, proper combustion and cooling of safety controls. With adequate combustion and ventilation air, the damper may be closed for vent-free use. The damper may be opened slightly for reduced venting. Check local codes and ordinances for permitted uses. Vent-free sets are the only safe alternative for burning in a vented fireplace with smoking/spillage issues.
A complete certified set consists of Alterna Objects and Alterna VF Hearth Kit.
DO NOT MIX OBJECTS AND HEARTH KITS FROM DIFFERENT CATEGORIES OR FROM DIFFERENT MANUFACTURERS. Doing so could result in unsafe operation, and voids all warranties.
ALTERNA™ VF OBJECTS include: FireBalls, FireStones, or FireGlitter for the hearth chassis.
ALTERNA™ VF HEARTH KITS include: Assembled burner/grate/safety control, Oxygen Depletion Sensor
(ODS) pilot, connector and fitting, damper clamp. Available in Black Chassis.
M and RE controls have standing pilots that consume 300 BTU/hour (1 therm of natural gas every
13.9 days, or 1 gallon of propane every 12.7 days).
- M provides ON/OFF control with full flame height adjustment by turning the knob.
- RE has a motor drive for remote flame height adjustment. Includes hand-held remote transmitter.
- S millivolt control has a standing pilot that consumes 575 BTU/hour (1 therm of natural gas every 7.2 days, or 1 gallon of propane every 6.6 days). They have an installed switch for ON/OFF control and may be also used with the SR-MV1, THR1-MV1 and WS-MV1 remote controls, or with a wired wall switch, wired wall timer, or a home automation system. The flame height can be adjusted manually at the control valve.
- EI is a pilot-on-demand system – there is no gas being consumed while the unit is OFF.
Includes the hand-held remote control transmitter for turning the set ON, OFF and adjusting the flame height.
Single Face = one fireplace opening. Double Face = See-Through = two opposing openings
Maximum BTU/hour inputs for Alterna VF Sets:
20" = 30,000
24" and 30" = 40,000
Please Note:
• S– See Page 45 for Remote Switch and Transmitter options
• RE and EI include the Hand-held Remote Transmitter
ANB (Single Face sets) Minimum Fireplace Dimensions
| Set Size | Front Width | Rear Width | Depth | Height |
|---|---|---|---|---|
| 20" | 26" | 20" | 13.5" | 16" |
| 24" | 30" | 24" | 13.5" | 16" |
| 30" | 36" | 30" | 13.5" | 16" |
DF-ANB (Double Face sets) Minimum Fireplace Dimensions
| Set Size | Front Width | Rear Width | Depth | Height |
|---|---|---|---|---|
| 20" | 26" | 26" | 17" | 16" |
| 24" | 30" | 30" | 17" | 16" |
| 30" | 36" | 36" | 17" | 16" |
AFM and AFS (Single Face sets) Minimum Fireplace Dimensions
| Set Size | Front Width | Rear Width | Depth | Height |
|---|---|---|---|---|
| 20" | 26" | 20" | 11" | 16" |
| 24" | 30" | 24" | 11" | 16" |
| 30" | 36" | 30" | 11" | 16" |
DF-AFM and DF-AFS (Double Face sets) Minimum Fireplace Dimensions
| Set Size | Front Width | Rear Width | Depth | Height |
|---|---|---|---|---|
| 20" | 26" | 26" | 14" | 16" |
| 24" | 30" | 30" | 14" | 16" |
| 30" | 36" | 36" | 14" | 16" |