Flow Rates - Rheem Raypak R207A Installation And Operation Manual

MANUAL
SHUT-OFF
VALVE
UNION
Figure 14. Manual Shut-Off Valve Installation
Gas Pressure Adjustment Locations
Gas Pressure Adjustment
Figure 15. Honeywell VR8340)
Pipe Sizing for Gas Connection
The capacities shown below are based on using SCH
40 black iron pipe. For capacities using other materials,
consult local codes.
Maximum Equivalent Pipe Length (ft) (m)
Natural Gas 1000 BTU/FT
in. WC Pressure Drop
Model 3/4" 1"
207A
25 (7.6) 90 (27.4)
267A
15 (4.6) 50 (15.2)
337A 10 (3.0) 30 (9.1)
407A * 20 (6.1)
* A 3/4" gas line can be used for up to 5' (1.5 m) maximum length from the gas
valve in addition to the sediment trap.
Table I. Gas Pipe Sizing
F10639-4
3
0.60 Specific Gravity @ 0.5
1-1/4" 1-1/2"
360 (109.7) n/a
210 (64.0) 445 (135.6)
140 (42.7) 290 (88.4)
95 (29.0) 215 (65.5)

Flow Rates

Model Pipe Size
207A 1-1/4"–1-1/2"–2"
267A 1-1/4"–1-1/2"–2"
337A 1-1/4"–1-1/2"–2"
407A 1-1/4"–1-1/2"–2"
* When flow rates exceed maximum GPM an external auxiliary bypass valve is
required. See external bypass valve section for details.
Table J. Min/Max Flow Rates
Figure 16. Polymer Headers Water Flow
Figure 17. Brass Headers (ASME) Water Flow
Min. GPM (lpm) Max. GPM (lpm)
20 (75) 125 (473)
25 (95) 125 (473)
35 (132) 125 (473)
40 (151) 125 (473)
F10638-1
F10637-1
15