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Measure rear clearances from the outermost surface of the steel rear skirt. The PDV20 and SDVR heaters are approved for installation into an alcove constructed of combustible materials to the dimensions and clearances shown on the next page. WARNING: • Always maintain required clearances (air spaces) to nearby combustibles to prevent fire hazard. Do not fill air spaces with insulation. All venting components must maintain a 1" (25mm) clearance to combustible materials. Maintain a 6” (152mm) clearance when using single wall pipe. Maintain a 2” (51mm) clearance when venting straight off the rear. • The gas appliance and vent system must be The same clearances apply in a standard parallel installation. vented directly to the outside of the building and never be attached to a chimney serving a separate solid fuel or gas-burning appliance. • Refer to the manufacturer's instructions included with the venting system for complete installation procedures. Minimum Clearances CL 18..." Parallel Installation CL (476mm) 2..." (64mm) 18..." (476mm) 2..." (63mm) 6" 6" (150mm) (150mm) 6" 6" PDV20 SDVR ST128c ST128a Fig. 3 Parallel installation minimum clearances and flue centerline. Corner Installation 7..." 7..." Max. Vent Length 20" (508mm) 2" (50mm) (190mm) 2" (50mm) PDV20 Max. Vent Length 20" (508mm) (190mm) 2" (50mm) 2" (50mm) SDVR ST129a Fig. 4 Corner installation minimum clearances. Pinnacle & Stardance Direct Vent - Rear Vent Gas Heaters 6" (150mm) Sidewall/ Trim Alcove Installation ST381 PDV20 9" (230mm) Max. Mantel Width See Fig. 6 2..." (63mm) Rear Wall 6" (150mm) Sidewall/ Trim SDVR 9" (230mm) Max. Mantel Width See Fig. 6 2..." (63mm) Rear Wall ST381a Fig. 5 Alcove installation. Mantel Clearances Combustible Mantel or Trim Materials Noncombustible Materials A B 3" (75mm) Min. ST382 PDV20 and SDVR A (Max.) B (Min.) 9” (230mm) 10...” (270mm) 7...” (190mm) 9” (230mm) 6” (152mm) 7...” (190mm) 4...” (114mm) 6” (152mm) 3” (76mm) 4...” (114mm) 1...” (38mm) 3” (75mm) A = Depth of Mantel and/or Top Trim B = Height from Top of Heater Hearth Requirements The PDV20 and SDVR Heaters must be installed on rigid flooring. When the heater is installed directly on any combustible surface other than wood flooring, a metal or wood panel extending the full width and depth of the unit must be used as the hearth. There are no other hearth requirements. Gas Specifications Max. Input BTU/h Min. Input BTU/h Model Fuel Gas Control PDV20RN Nat Millivolt 21,000 15,500 PDV20RP Prop Millivolt 21,000 16,500 PDV20RFN Nat Comfort Control 21,000 15,500 PDV20RFP Prop Comfort Control 21,000 16,500 SDVRRN Nat Millivolt 21,000 15,500 SDVRRP Prop Millivolt 21,000 16,500 SDVRRFN Nat Comfort Control 21,000 15,500 SDVRRFP Prop Comfort Control 21,000 16,500 Weight: Fully assembled 350 lbs. Fig. 6 Mantel / top trim clearances. Gas Inlet and Manifold Pressures Inlet Minimum Natural LP (Propane) 5.5” w.c. 11.0” w.c. Inlet Maximum 14.0” w.c. 14.0” w.c. Manifold Pressure 3.5” w.c. 10” w.c. Pinnacle & Stardance Direct Vent - Rear Vent Gas Heaters Horizontal Termination Pinnacle / Stardance Direct Vent / Rear Vent Certified to: ANSI Z21.88b-2002 / CSA Z2.33b-2002 Vented Gas Fireplace Heaters The installation must conform with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 - latest edition. (EXCEPTION: Do not derate this appliance for altitude. Maintain the manifold pressure at 3.5” w.c. for Natural Gas and 10” w.c. for Propane.) High Elevations Input ratings are shown in BTU per hour and are certified without deration for elevations up to 4,500 feet (1,370m) above sea level. For elevations above 4,500 feet (1,370m) in USA, installations must be in accordance with the current ANSI Z223.1/NFPA 54 and/or local codes having jurisdiction. In Canada, please consult provincial and/or local authorities having jurisdiction for installations at elevations above 4,500 feet (1,370m). WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual for correct installation and operational procedures. For assistance or additional information consult a qualified installer, service agency, or the gas supplier. The vent must rise vertically a minimum of 24” (610mm) after the first elbow directly off the back of the unit, before the next elbow. The horizontal run may extend up to 20’ (6m) and include a vertical rise of up to 40’ (12m). (Fig. 7) Horizontal termination must also meet the criteria shown in Figures 9 and 10. • Approved vent systems must terminate above and including the heavy line in Figure 7. • Two 45° elbows may be substituted for each single 90° elbow. • With a rise between 2' - 5', one 90° or two 45° elbows may be used (Excluding the first elbow directly off the back of the unit. Vertical Run (in feet) Measured after the first elbow. (Transition elbow) 30 29 28 27 26 25 24 23 22 21 20 19 18 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 12 3 4 5...

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