Raypak Raytherm - Type WH 926-1758 - Manual (Page 2)

Catalog No.: 2000.22N Effective: 12-1-07 Replaces: 10-15-03
Raytherm - Type H
Hydronic Heating Boilers
Model
11-3/4
14-1/2
5
A
1-1/8
COMBUSTIBLE FLOOR SHIELD
14
11-1/8
5-1/8
G
GAS
ELEC.
CONN.
27-3/4
6
32-1/2 19-1/2
(J-BOX)
PUMP
(OPTIONAL)
46 3/4
(OPTIONAL)
H
7-7/8
(OPPOSITE SIDE)
H - INLET
H - OUTLET
OPTIONAL ONE PASS
MODELS H 926-1758
Dimensions (Inches) Approx.
Model MBTU Natural Gas Width Gas Conn. Water Conn. Shipping
No. Input Output A G H Weight (Lbs.)
H-926 926.0 759.0 52-3/8 1 2-1/2 (b) 785
H-1083 1083.0 888.0 59-1/4 1 (a) 2-1/2 (b) 865
H-1178 1178.0 966.0 63-5/8 1 (a) 2-1/2 (b) 925
H-1287 1287.0 1055.0 68-5/8 1-1/4 2-1/2 (b) 980
H-1414 1413.0 1158.5 74-7/8 1-1/4 2-1/2 (b) 1080
H-1571 1570.0 1287.0 81-1/8 1-1/4 2-1/2 (b) 1130
H-1758 1758.0 1441.5 89-3/8 1-1/4 2-1/2 (b) 1160
NOTE: Ratings shown are for elevations up to 2,000 feet. For elevations over 2,000 feet, reduce ratings at the
rate of 4% for each 1,000 feet above sea level.
(a) 1” or 1-1/4”, depending on boiler type or code requirements
(b) 3” NPT on single-pass option
BOILER RATE OF FLOW AND PRESSURE DROP
Two-pass Systems Single-pass Systems
Model 10°
∆T
20°
∆T
30°
∆T
40°
∆T
10°
∆T
20°
∆T
30°
∆T
40°
∆T
No. GPM ∆P FT GPM ∆P FT GPM ∆P FT GPM ∆P FT GPM ∆P FT GPM ∆P FT GPM ∆P FT GPM ∆P FT
H-926 N/A N/A 76 8.0 51 3.5 N/A N/A 152 5.7 N/A N/A N/A N/A N/A N/A
H-1083 N/A N/A 90 12.0 59 5.1 44 2.9 178 8.2 N/A N/A N/A N/A N/A N/A
H-1178 N/A N/A N/A N/A 64 6.3 48 3.6 193 10.3 97 2.7 N/A N/A N/A N/A
H-1287 N/A N/A N/A N/A 70 8.0 53 4.5 N/A N/A 106 3.4 N/A N/A N/A N/A
H-1414 N/A N/A N/A N/A 77 10.2 58 5.8 N/A N/A 116 4.2 N/A N/A N/A N/A
H-1571 N/A N/A N/A N/A 86 13.2 64 7.3 N/A N/A 129 5.5 N/A N/A N/A N/A
H-1758 N/A N/A N/A N/A N/A N/A 72 9.7 N/A N/A 144 7.3 96 3.4 N/A N/A
N/A – Not Applicable
NOTES:
ƒ Maximum acceptable flow through heat exchanger tubes is 90 GPM for two-pass and 200 GPM for single-pass systems.
ƒ In closed heating systems, GPM may increase by 10% and pressure drop by 21%.
ƒ Single-pass heat exchangers should be used only when flow rates exceed maximum acceptable rates for two-pass.
Raypak, Inc. ƒ 2151 Eastman Avenue, Oxnard, CA 93030 ƒ (805) 278-5300 ƒ Fax (800) 872-9725 ƒ www.raypak.com