Superior DRT3535 35" Traditional Direct Vent Gas Fireplace
The Superior DRT3535 is the 35" size of Superior's DRT3500 traditional direct vent gas fireplaces, and it comes with the extras built in: a factory-installed blower with six speeds, interior lighting with six settings and a full-function remote. Behind ceramic glass, a high-definition oak log set sits on glowing and platinum embers, and the glass viewing area is 29-1/4" wide and 19-1/2" tall.
It comes as the DRT3535DEN-E for natural gas (26,000 Btu/hr high, 17,000 low) or the DRT3535DEP-E for propane (23,000 high, 18,000 low). The electronic IPI/CPI ignition runs on 120 V with four AA batteries as backup, so the fire keeps going in a power outage; the blower and lights wait for power to come back. The vent can leave from the top or the back of the fireplace in 4-1/2" x 7-1/2" Superior Secure Vent or Secure Flex pipe.
Two finish choices are required: a facade (the Vista frame, or a Reflection or Craftsman designer facade in black or warm chestnut, each with its screen barrier and hood) and a firebox liner (black reflective porcelain or Blackstone, Greystone or Blended Brown stacked ceramic). If you don't need the blower, lights and remote, the Superior DRT3035 is the same 35" size without them. The DRT3500 series also comes in 40" (DRT3540) and 45" (DRT3545).
Play video: Superior DRT3500 Direct Vent Gas Fireplace
Key Features
- 29-1/4" x 19-1/2" glass viewing area on a 35-1/4" wide fireplace
- Natural gas: 26,000 to 17,000 Btu/hr; propane: 23,000 to 18,000 Btu/hr
- Factory-installed blower with six speed settings
- Interior lighting with six settings
- Full-function remote included: on/off, thermostat, flame height, blower, lighting and IPI/CPI
- Electronic IPI/CPI ignition with a four AA battery backup that runs the fire in a power outage (blower and lights excluded)
- Combination flue: vents from the top or the back
- Mid-size 17" depth saves floor space
- One facade and one liner required: Vista frame, Reflection or Craftsman facade; black porcelain or stacked ceramic liner
- High-definition oak log set with glowing and platinum embers
- Ceramic glass front
- Four-sided stainless surround available
- Listed for bedrooms and manufactured homes
- 20 year limited warranty on the body, firebox and barrier, and on the ceramic glass against thermal breakage
What's Included
- Factory-installed six-speed blower and interior lighting
- Full-function remote control and wall receiver, with three AAA batteries for the remote and four AA batteries for the receiver
- High-definition oak log set, a bag of glowing embers and a bag of platinum embers
- Ceramic glass front
- Non-combustible fireboard with side and center brackets
- Header shield, wall heat shield and elbow shield
- Two vent restrictors and two vent cover plates
What to Order With It
Required – Facade (choose one; includes the screen barrier and hood):
Required – Firebox liner (choose one):
Required – Venting (4-1/2" x 7-1/2", ordered separately):
Optional – Surround and stone stop:
Optional – Gas conversion, embers and touch-up:
Specifications
| Models |
DRT3535DEN-E (natural gas), DRT3535DEP-E (propane) |
| Order numbers |
F5005 (DRT3535DEN-E), F5006 (DRT3535DEP-E) |
| Type |
Traditional direct vent gas fireplace, single-sided, sealed combustion |
| Input, natural gas |
26,000 Btu/hr high, 17,000 Btu/hr low |
| Input, propane |
23,000 Btu/hr high, 18,000 Btu/hr low |
| Efficiency |
62.5% P4 natural gas, 69.6% P4 propane |
| Glass viewing area |
29-1/4" W x 19-1/2" H |
| Fireplace size |
35-1/4" W x 32-1/8" H x 17" D |
| Framed opening |
35-7/8" W x 36-1/4" H x 18-1/2" D (add 1/8" per side) |
| Ignition |
Electronic IPI/CPI with four AA battery backup |
| Blower |
Factory-installed, six speeds |
| Lighting |
Interior lighting, six settings |
| Remote |
Full-function hand-held remote with wall receiver: on/off, thermostat, six flame heights, blower and lighting |
| Power |
120 VAC, 60 Hz, unswitched, to the junction box on the right side |
| Gas connection |
1/2" supply line to the left side; flexible connector and 1/2" shutoff valve installed at the factory |
| Gas inlet pressure |
Natural gas 5" to 10.5" WC; propane 11" to 13" WC |
| Venting |
Direct vent, top or rear, 4-1/2" x 7-1/2": Superior Secure Vent (rigid), Secure Flex (flexible) or Z-Flex GA |
| Vent run |
6 to 60 ft straight up; horizontal runs up to 25 ft with the vertical rise the vent chart calls for; up to three 90° elbows |
| Glass and barrier |
Ceramic glass; screen barrier comes with the required facade |
| Logs and interior |
High-definition oak log set, glowing and platinum embers; liner required |
| Altitude |
0 to 4,500 ft with the standard orifices |
| Listing |
ANSI Z21.88 / CSA 2.33 and CSA 2.17, vented gas fireplace heater (PFS report F13-094) |
| Approved locations |
Bedrooms; aftermarket, permanently located manufactured homes (USA only) |
| Shipping weight |
134 lb |
| Warranty |
20 year limited (see Warranty below) |
Efficiency figures are P4 ratings from Superior's installation manual, Table 2. P4 is the Canadian CSA P.4.1 fireplace efficiency rating; Superior doesn't publish an AFUE figure for this series.
Dimensions and Framing
Fireplace dimensions
| Overall height (A) |
32-1/8" |
| Front face height (B) |
30-1/2" |
| Glass viewing height (C) |
19-1/2" |
| Glass viewing width (D) |
29-1/4" |
| Overall width (E) |
35-1/4" |
| Width at the back (F) |
25" |
| Vent center from the side at the back (G) |
12-1/2" |
| Width at the base of the front (H) |
32-7/8" |
| Vent center from the back (J) |
6-7/8" |
| Overall depth (I) |
17" |
| Vent center from the front |
10-1/8" |
Letters match the drawing above.
Framing
| Opening width (K) |
35-7/8" |
| Opening height (L) |
36-1/4", including the 4" top standoffs |
| Depth (N) |
18-1/2" |
| Top vent, minimum height to the vent framing (M) |
38-3/4" |
| Rear vent, minimum height to the vent framing (O) |
23-3/8" |
Framing is 2x4 or larger. The opening sizes are minimums, and Superior recommends an extra 1/8" per side. The depth assumes 1/2" drywall. Framing for Secure Flex top venting and for corner installations is in the installation manual.
Installation Requirements
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Clearances to combustibles: 1-1/2" to the outer wrapper at the back and 1/2" at the sides, 0" at the spacers, the top standoffs and the floor. With top venting, nothing combustible may touch the rear flue cover.
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Ceiling: at least 64" from the bottom of the fireplace to the ceiling.
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Header: a header can touch the bent-up 4" top standoffs but can't rest on them or be notched around them. All framing above the fireplace must support itself.
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Front: keep 36" clear in front of the glass.
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Side walls: the fireplace can't be recessed behind the wall surface. With one side flush to a wall, the wall on the other side must not extend past the front edge of the unit. At 6" or more from the side, a combustible side wall can run any length, and combustible mantel legs must stay within the 45 degree safe zone shown in the manual.
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Mantel: a 12" deep combustible mantel needs to be at least 18" above the fireplace opening and a 2" deep one at least 8", per the mantel chart in the manual. Non-combustible mantels can go at any height, but nothing may hang below the hood.
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Wall finish: combustible materials can come down to the top of the non-combustible board that ships with the fireplace. Non-combustible facing up to 6" deep can overlap the face, as long as it doesn't cover the glass or block removal of the facade. With a designer facade and thick facing, use the stone stop kit.
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Shelf or TV above: a combustible shelf must be at least 47" above the base of the fireplace with top venting and a rigid Secure Vent elbow, 49" with a Secure Flex elbow, or 41" with rear venting. Don't insulate the space between the fireplace and the shelf. A TV above must stay within its maker's temperature rating.
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Facade and liner: the fireplace can't be run until the required facade and firebox liner are installed. The facade carries the screen barrier and the hood.
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Floor: no hearth extension is required. On carpet, vinyl or any combustible floor other than wood, set the fireplace on a metal or wood panel the full width and depth of the unit.
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Venting: use only Superior Secure Vent, Secure Flex or Z-Flex GA pipe in the 4-1/2" x 7-1/2" size, from the top or the back of the fireplace. Straight vertical runs are 6 to 60 ft, and horizontal runs can reach 25 ft with the vertical rise the vent chart calls for, with up to three 90° elbows. Secure Flex on a rear vent horizontal termination needs at least 1 ft of vertical rise. Keep 3" of clearance above horizontal vent runs and 1" at the sides and bottom.
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Gas: run a 1/2" gas line to the left side of the fireplace. Inlet pressure must be 5" to 10.5" WC on natural gas or 11" to 13" WC on propane.
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Power: an unswitched 120 VAC supply to the junction box is required. The remote's wall receiver mounts in a standard junction box (not included) next to the fireplace, within reach of its wiring harness. The batteries are backup only; the blower and lights don't run on battery.
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Altitude: the standard orifices cover 0 to 4,500 ft. Above that, the input has to be reduced; ask your gas supplier.
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Massachusetts: installation and repair must be done by a licensed plumber or gas fitter. The flexible gas connector can't be longer than 36", and the shutoff must be a T-handle valve. A horizontal termination less than 7 ft above grade also needs a hard-wired carbon monoxide detector with battery backup on the floor where the fireplace is, and a GAS VENT DIRECTLY BELOW sign outside.
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Manufactured homes: ground the fireplace to the chassis and don't cut or weaken the cross members. It must run on the gas shown on its rating plate unless a certified conversion kit is used.
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Installation: must be installed by a qualified installer following the installation manual and local codes. Superior calls for an inspection by a qualified service person before first use and once a year.
Frequently Asked Questions
What does the DRT3535 remote control?
The included remote turns the fireplace on and off, runs it in thermostat mode, and sets the flame height, blower speed and interior lighting, each with six settings. It also switches the pilot between IPI and CPI. The wall receiver has an ON/OFF/REMOTE slider, so you can still run the fireplace if the remote is misplaced.
Can it vent out the back?
Yes. It has a combination flue: the vent can leave from the top or from the back, and the vent cover plates for switching it ship with the fireplace. A rear vent can go straight out through an outside wall behind the fireplace, and it allows the lowest shelf above the fireplace.
Can I put a TV above it?
Yes, if the shelf or TV mount is at least 47" above the base of the fireplace with top venting (41" with rear venting) and the TV stays within its maker's temperature rating. Don't insulate the space between the fireplace and the shelf. Our guide to fireplace heat management explains other ways to keep the wall above cooler.
Will it work during a power outage?
Yes. Four AA batteries in the receiver run the ignition and burner when the power is out. The blower and lights won't run until power returns.
Can I change it from natural gas to propane, or the other way?
Yes, with Superior's conversion kit: GCKSIT3535ENP for natural gas to propane or GCKSIT3535EPN for propane to natural gas. In a manufactured home, the fireplace may only run on the gas shown on its rating plate unless a certified kit is used.
What's the difference between the DRT3535 and the DRT3035?
Both are 35" Superior traditional direct vent fireplaces with the same framing, and both need a facade. The DRT3035 leaves out the blower, lighting and remote, has tempered glass and a black painted interior, comes in millivolt or electronic versions, and runs at 20,000 Btu/hr high on natural gas against 26,000 for the DRT3535. It needs a wall switch, thermostat or remote added.
Can it go in a bedroom?
Yes. The DRT3535 is listed for bedrooms and for aftermarket, permanently located manufactured homes in the USA, where local codes allow.
Warranty
Superior's 20 Year Limited Warranty covers the DRT3535 against defects in materials and workmanship:
- Fireplace body, firebox and barrier: 20 years
- Ceramic glass: 20 years, against thermal breakage only
- Burner, gas components and gaskets: 1 year
- Optional blowers and remote controls: 1 year
- Parts not listed: 90 days
- Labor: paid at IHP rates for the covered part's warranty period, up to five years
Vent components, trim and paint are not covered. The warranty is for the original owner of a fireplace installed in the US or Canada. Full terms are in the warranty certificate.
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