Catalog No.: 2000.203E Effective: 12-1-07 Replaces: 4-1-05
Raytherm - Type H
Hydronic Heating Boilers - Indoor Model
Dimensions (Inches)
Shipping Weight
(Lbs.) – Approx.
Model
No.
MBTU
Input
MBTU
Output
AFUE
(%)
Width
A
Height
C
J
Flue Dia.
K
No Pump w/ Pump
H-181* 181 148 82.6 18-1/4 62-5/8 12-1/16 6 191 221
H-261 264 216 82.7 22-3/8 62-7/8 11-1/8 7 214 244
H-331 334 274 N/A 25-3/4 63-3/4 10-3/4 8 234 264
H-401* 399 327 N/A 29-1/4 65-3/8 12-1/2 9 253 283
* Exceptions on H3 (two-stage-fired) models:
- Model H3-181 has an 18-1/4” gas connection
- Model H3-401 has 375 MBTU Input and 308 MBTU Output
NOTE: Ratings shown are for elevations up to 2,000 feet. For elevations over 2,000, reduce ratings at the rate of 4% for each
1,000 feet above sea level.
BOILER RATE OF FLOW AND PRESSURE DROP
10° ∆T 20° ∆T 30° ∆T
Model
No.
GPM
∆P FT
GPM
∆P FT
GPM
∆P FT
H-181 30 4.2 N/A N/A N/A N/A
H-261 43 8.5 22 2.2 N/A N/A
H-331 N/A N/A 27 3.4 N/A N/A
H-401 N/A N/A 33 5.2 22 2.3
N/A – Not Applicable
Low NOx
*
Raypak, Inc. 2151 Eastman Avenue, Oxnard, CA 93030 (805) 278-5300 Fax (800) 872-9725 www.raypak.com
