Roberts-Gordon CRV-B-4 - Manuals

CRV-S ERIES D ESIGN M ANUAL 2 SECTION 2: THE CRV-SERIES SYSTEM A CRV-Series system consists of one p u mp, a control system, and a n u mber of b u rners, see Page 3, Figure 1 . It also incl u des an extended t u be s u rface (4" (10 cm) steel t u bing) covered by highly efficient reflectors to d...

CRV-S ERIES D ESIGN M ANUAL 4 2.3 Fuel Savings and Comfort Space heating can be accomplished w ith less inp u t capacity w hen a radiant heating system is u tilized, rather than w ith a conventional convective heating system. Why is this so? A conventional, convective heating system, s u ch as a u n...

SECTION 3: C LEARANCES TO C OMBUSTIBLES 5 SECTION 3: CLEARANCES TO COMBUSTIBLES3.1 Required Clearances to Combustibles Clearances are the req u ired distances that comb u sti- ble objects m u st be a w ay from the heater to prevent serio u s fire hazards. Comb u stibles are materials, w hich may cat...

SECTION 3: C LEARANCES TO C OMBUSTIBLES 7 NOTE: 1. All dimensions are from the s u rfaces of all t u bes, co u plings, elbo w s, tees and crosses. 2. Clearances B, C and D can be red u ced by 50% after 25' (7.5 m) of t u bing do w nstream from w here the comb u stion chamber and the t u be connect. ...

SECTION 4: S IZING AND D ESIGN C ONSIDERATIONS 9 SECTION 4: SIZING AND DESIGN CONSIDERATIONS The b u ilding heat loss m u st be calc u lated in accor- dance to accepted energy load calc u lation methods. ASHRAE (American Society of Heating, Refrigeration and Air-Conditioning Engineers) offers in-dep...

CRV-S ERIES D ESIGN M ANUAL 10 EXAMPLE 2: Note in Example 2 , if eq u ipment had been convention- ally sized based on thermal o u tp u t only, a nearly iden- tical inp u t req u irement w o u ld res u lt. For mo u nting heights above 60' (18 m), no f u rther correction is gen- erally necessary if th...

SECTION 4: S IZING AND D ESIGN C ONSIDERATIONS 11 FIGURE 11: Radiant Distribution (Average Coverage) FIGURE 12: Radiant Distribution (Increased Coverage) FIGURE 13: Radiant Distribution (Heavy Coverage) H 90° 3 H H= mounting height 2 H H 90° H= mounting height H 90° y x=2H-2y x y= height above the f...

CRV-S ERIES D ESIGN M ANUAL 12 SECTION 5: FLOW LOADING The patented CRV-Series b u rner system allo w s a n u mber of b u rners to be installed in-series, in the same radiant t u be, res u lting in a long, contin u o u s radi- ant emitting s u rface to give even heat distrib u tion w ithin the b u i...

SECTION 5: F LOW L OADING 13 FIGURE 14: Burner Flow Units B-10 Burner #1 End Burner End Vent Air + 20 Flow Units Combustion Gas + 10 Flow Units Coupling B-10 Burner #2 Downstream Burner Combustion Gas + 10 Flow Units B-10 Burner #3 Downstream Burner Combustion Gas + 10 Flow Units Burner 1 Burner 2 B...

CRV-S ERIES D ESIGN M ANUAL 14 5.2 Pump Capacity The flo w u nit capacity of the p u mp is indicated on Page 14, Table 2 , as a f u nction of installed altit u de. When the CRV-Series system is designed in accor-dance w ith this set of instr u ctions and is in proper operating condition, a vac uu m ...

SECTION 6: R ADIANT T UBE AND T AILPIPE 15 SECTION 6: RADIANT TUBE AND TAILPIPE The main p u rpose of the tailpipe and the radiant t u be is to provide s u fficient t u be s u rface to transfer the heat from the fl u e gases to the t u be w all w here it radiates from the t u be. Radiant tube is def...

CRV-S ERIES D ESIGN M ANUAL 16 FIGURE 16: Tube Length vs. Efficiency 6.3 Design Parameters When designing branches of 4 B-8 or larger b u rners in-series, the follo w ing limitation to the p u mp capacity applies: Pump Model Series Maximum Loading EP-100:Not Allo w ed EP-200:1 Branch of 4 b u rners ...

SECTION 6: R ADIANT T UBE AND T AILPIPE 17 4. Select p u mp model series for total system flo w u nits: EP-100: u p to 66 flo w u nits EP-200: u p to 110 flo w u nits EP-300: u p to 224 flo w u nits 5. See Page 14, Table 2 for altit u des greater than 2000'. 6. For each branch, add the length of rad...

CRV-S ERIES D ESIGN M ANUAL 18 EXAMPLE 3: B-10 Radiant Tube vs. Tailpipe Length Table 5: Operating Characteristics; Condensing or Non-Condensing N/A=Not Allowed NC=Non Condensing C=Condensing 6.5 Tailpipe Design Method Given the overall length of tailpipe for the system, the follo w ing section prov...

SECTION 6: R ADIANT T UBE AND T AILPIPE 19 Table 5 for the b u rner model to ens u re that the res u lt- ing tailpipe lengths maintain intended operating char-acteristic. 6.5.5 Damper Couplings Damper co u plings are needed: • In any tailpipe branch that carries less flo w u nits than other tailpipe...

CRV-S ERIES D ESIGN M ANUAL 20 FIGURE 17: Possible Damper Coupling Locations Damper Coupling Damper NOTE: Damper setting will vary Zone 1 Zone 2 Zone 3 Zone 1 End Vent Zone 3 End Vent Zone 2 End Vent Zone 1 Damper Coupling Zone 2 Damper Coupling Zone 3 Damper Coupling Pump Damper

SECTION 7: E XAMPLE CRV-S ERIES S YSTEM L AYOUTS 21 SECTION 7: EXAMPLE CRV-SERIES SYSTEM LAYOUTS Systems that are symmetrical are preferred beca u se the vac uu m available in the system branches are bal- anced as a f u nction of design (damper co u plings are not needed). Where radiant t u be lengt...

CRV-S ERIES D ESIGN M ANUAL 24 Layo u t to provide minim u m system efficiency. Adj u st the lengths as necessary for different inp u t systems and to increase the efficiency levels. This system is generally accompanied by an addi-tional system, as sho w n, so that the radiant o u tp u t of the addi...

SECTION 7: E XAMPLE CRV-S ERIES S YSTEM L AYOUTS 25 FIGURE 26: Example System Layout (Option 9) 7.7 Example System Layout (Option 7, 8 and 9) These systems are for B9 b u rners only, this b u rner is specially rated for 2 b u rners in-series applications in the systems sho w n. Option 7 is a 180' (5...

CRV-S ERIES D ESIGN M ANUAL 26 SECTION 8: CONTROL METHODS There are several methods of controlling CRV-Series systems. The options are as follo w s: 8.1 ROBERTS GORDON ® System Control (P/N 02770 0 02) The ROBERTS GORDON ® System Control is an electronic controller designed for the control of CORAYV...

SECTION 8: C ONTROL M ETHODS 27 B u ildings today demand all sor ts of control options based on the u ser’s preference. ULTRAVAC™ controls offer a host of comm u nication options for integration w ith controls’ net w orks to best serve individ u al needs: BACnet ® : Interface ULTRAVAC™ w ith other b...

CRV-S ERIES D ESIGN M ANUAL 28 SECTION 9: AIR SUPPLY SYSTEM An air s u pply free of d u st and corrosive contaminants is essential for proper operation and best life expect-ancy w ith any heating system. With CRV-Series, there are t w o alternatives available to the designer for pro- viding the air ...

SECTION 9: A IR S UPPLY S YSTEM 29 9.3.3 Pipe sizing To size each section of pipe proceed as follo w s: • Calc u late the req u ired flo w u nits at each o u tlet of the s u pply system. • Meas u re the longest r u n of pipe from the blo w er to the most remote o u tlet. Use only this distance in Fi...

CRV-S ERIES D ESIGN M ANUAL 30 FIGURE 29: Sample Layout for Pressurized Outside Air Systems *NOTE: up to 10' (3 m) max. from blower inlet can be neglected for pressure drop calculations. 4 4 4 10 20 8 8 8 110' (33 m) (44) 15 6 6 6 (22) (33) P 100' (30 m) 15' (4.5 m) B 50' (15 m) 10' (3 m) max.* 4...

CRV-S ERIES D ESIGN M ANUAL 32 SECTION 11: CRV-SERIES EQUIPMENT SPECIFICATIONS The total heating system s u pplied shall be design cer- tified by the CSA International per American National Standard ANSI Z83.20/CSA 2.34 (latest edition). 11.1 Burner and Burner Controls 11.1.1 B u rners shall be desi...

I n f r a r e d H e a t i n g Maintain clearance to the side and clearance below the heater from vehicles and combustible materials. www.rg-inc.com Printed in U.S.A. P/ N 91037912 Re v . H Attach this information to a wall near the ROBERTS GORDON ® heater. Read the Installation, Operation, and Servi...