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Model GF 520 DV / DV MV · Direct Vent · Electronic Ignition
Both paths draw from the same certified manual (ANSI Z21.88-2019 · CSA 2.33-2019). Skip straight to the full PDF →
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Remove the top plate and confirm the integrated certified safety-barrier screens on the front door and side glass are in place — they must stay installed. Review all requirements first.
Rear 1½", sides 10", corner 5⅝", ceiling 43". Approved directly on combustible floors — no hearth pad required — but never on thick carpet or foam, which lets the stove settle and can leak the vent. Alcove min 44"W × 24"D × 60"H.
Ships for natural gas. For propane, convert with kit 158329 — swap to the #52 burner orifice and the .013" LP pilot injector, and fit the LP regulator tower. Authorized technician only.
Vertical or horizontal coaxial (4" inner / 6⅝" outer). Use one approved brand only — DuraVent DirectVent Pro and listed equivalents — never mixed. Seal the inner pipe with a 1/8" bead of high-temp cement (no silicone). Horizontal: ≤30 ft vertical and ≤20 ft horizontal, with a 12" rise and 6" run minimum. Set the exhaust restrictor plate per the vent matrix.
3/8" NPT supply (about 12" off the rear centerline) with a manual shut-off (T-handle in MA) and union in the same room. Leak-test every joint. Verify inlet and manifold pressure with the knob on HIGH at the A (manifold) and B (inlet) ports.
Install the Beach Fire log set and rock-wool embers; add the optional reflective or fluted liner and ash lip if used. Wear gloves and keep embers clear of the pilot.
Provide a grounded outlet within 6 ft of the vent centerline. Fit the optional blower kit; wire a 750 mV remote or thermostat to the terminal block right of the valve. Set the rear switch to T-STAT for thermostatic or remote control.
Purge the line on first light and, from cold, let the pilot burn 10–15 minutes to build draft before the burner. The pilot should engulf the top 1/8" of the thermocouple and thermopile. Tune the air shutter (factory NG 1/16", LP 1/8") for a clean flame with no soot.