Raypak 331 User Manual

The Hot Water Management Experts

SM

®

Raytherm
Selection Guide

Specifications for
Commercial Atmospheric:

Hydronic Heating Boilers

ater Heaters

W

R

EF

H

eightJacket Gas Water Flue

TO

Width Overall HeightConn.Conn.Dia.

DWG H WH InputOutput

InputOutput ABCGHJKLLess Pump W/Pump

1 133••136.0 112.0

136.0 112.0 24-1/8 45.0 30-1/8 1/2 1-1/4 6 9-1/4 145 195

1

82/181• •181.0 148.0

181.0 148.0 18-1/4 62-5/8 38 3/4 1-1/2 12-1/16 6 11-13/16 191 221

260/261• •264.0 216.0 264.0 216.0

2

2-3/8 62-7/8 38 3/4 1-1/2 11-1/8 7 13-3/8 214 244

330/331• •334.0 274.0

334.0 274.0 25-3/4 63-3/4 38 3/4 1-1/2 10-3/4 8 15-3/4 239 264

400/401• •399.0* 327.0* 399.0* 327.0*

2

9-1/4 65-3/8 38 4-Mar 1-1/2 12-1/2 9 17-3/4 253 283

5

14••511.5 419.4

511.5 419.4 32-3/4 57.0 33 1 2 10 25-3/8 455 510

624••627.0 514.0

627.0 514.0

37-1/2 57.0 33 1 2 12 29-1/2 465 520

7

24••726.0 595.0

726.0 595.0

4

1-5/8 57.0 33 1 2 12 34-1/4 575 630

824••825.0 676.5

825.0 676.5

45-3/4 57.0 33 1 2 14 38-1/2 605 660

926••

926.0 759.0

0

48587

)c( 2/1-21

8/3-25

9

62••961.7 788.6 52-3/8 76-1/8 33-1/2 1 2-1/2 (c) 23-5/8 14

2

8 705 760

1083• •

1083.0 888.0

02

9568

)c

( 2/1

-2

)b(

4/1-95

1125• •1124.7 922.0 59-1/4 78-1/8 33-1/2 (b) 2-1/2 (c) 23-5

/8 16 32 745 800

1

178• •

1178.0 966.0

089529

)

c( 2/1-2)b(

8/5-36

1223• •1222.5 1002.4 63-5/8 78-1/8 33-1/2 (b) 2-1/2 (c) 23-

5/8 16 32 805 860

1287• •

1287.0 1055.0

53

01089

)

c( 2/1-24/1

-1

8/5

-

8

6

1336• •1336.6 1096.0 68-5/8 80-1/8 33-1/2 1-1/4 2-1/2 (c) 2

3-5/8 18 36 875 930

1

414• •

1413.0 1158.5

03110801

)c( 2/1-24/1-1

8/7-47

1468• •1467.0 1203.0 74-7/8 80-1/8 33-1/2 1-1/4 2-1/2 (c) 2

3

-5/8 18 36 945 1000

1571• •

1570.0 1287.0

09

110311

)c( 2/1-24/1

-1

8/1-1

8

1

631• •1630.0 1336.6 81-1/8 83-1/8 36-1/2 1-1/4 2-1/2 (c) 2

3-5/8 18 36 985 1040

1758• •

1758.0 1441.5

02210611

)c( 2/1-24/1-

1

8/3-9

8

1826• •1825.6 1497.0 89-3/8 85-1/8 36-1/2 1-1/4 2-1/2 (c) 2

3-5/8 20 40 1035 1090
2100• •2100.0 1722.0 61.0 68-1/4 (d) 3(c) 24 1400
2500• •2499.0 2049.0 70.0 68-1/4 (d) 3(c) 26 1580
3001• •3000.0 2460.0 81-1/4 68-1/4 2 3(c) 28 1750
3500• •3500.0 2870.0 92-1/2 68-1/4 2 3(c) 30 1920
4001• •4000.0 3280.0 103-3/4 68-1/4 2 3(c) 32 2100

*2-Stage 401 (Low NOx) derated 5%.

4

INDOOR

M

BTUH NATURAL GAS (a)

T

YPES

MODEL

Approximate

O

perating Weight

LBS.

3

2

OUTDOOR

A

VAILABLE

DIMENSIONS (INCHES)

5

Specifications and Dimensions

Models

Left Right To

p

With Pump Without Pump Rear Side Side Indoor Outdoor

Multiplier

133

Less than

Less than 12" 12" 6" 42" Unobstr.

182 - 400

10 amps @ 120V

1 amp @ 120V
181 - 401 5 amps @ 120V
514 - 824 Less than Less than 12" 18" 6" 36" Unobstr.

0.94

926-1826 10 amps @ 120V 4 amp @ 120V 24" 24" 24" 24" Unobstr.

0.92 Indoor/0.955 Outdoor

951276 pump* Less than

2100 - 4001 11 amps @ 230V 8 amps @ 120V

22 amps @ 110 V

Unobstr.12"

MIN CLEARANCES TO COMBUSTIBLE

CONSTRUCTION

12" 12"

1.0 (Same as natural gas)

PROPANE GASELECTRICAL RATINGS

24" 24" 24" 24" N/A

1.0 (Same as natural gas)

39"

The Raytherm Selection Guide is a ready-reference to Raypak’s full line of atmospheric commercial
hydronic heating boilers, water heaters and packaged systems. The user, the specifier and the
installer will find nearly all the significant information they require to select the proper Raytherm
boiler, water heater, or package system for their particular need or application.

Hydronic Hot Water Supply

H1 Mechanical modulation, high temp WH1 On/Off
H2 Motorized modulation WH2 Mechanical modulation (133-1826)
H3 2-Stage WH2 Motorized modulation (2100-4001)
H4 On/Off WH3 2-Stage
H5 Mechanical modulation, low-temp WH9 4-Stage
H9 4-Stage

Note:
Ratings shown are for elevations up to 2000 feet. Elevations over 2000 feet ratings should be reduced at the rate of 4% for each
1000 feet above sea level.

(a) For Propane, see MBTUH Propane Gas chart below
(b) 1” or -1/14” gas connection contingent on boiler type & code requirements
(c) 3” NPT on Single Pass Option for Model H 926 - 1826

(d) 1-1/2” or 2” gas connection contingent on boiler type & code requirements

4” Copper tubing on Single Pass Option for Model H 2100 - 4001

*Pump requires separate power supply

Page 2

Drawing 1 Drawing 2

Drawing 3 Drawing 4

Drawing 5

H

38-1/2

B

24-1/2

6-1/4

7-1/4

14-1/4

L

R

EAR

V

IEW

C

A

K

10-1/4

ELEC
CONN

G
G

AS

15-3/8

3-1/4

F

RONT

V

IEW

C

OMBUSTIBLE

F

LOOR SHIELD

(

OPTIONAL)

2

I

NDOOR
DRAFT
D

IVERTER

OUTDOOR

S

TACKLESS

UP

FRONT

CONTROLS

4-7/8

11-1/8

O

UT

I

N

OUT IN

OUT

IN

C

G

G

AS

B

OUTDOOR

BASE

A

8

J

K

L

A
2

26-1/2

21-1/4

ELEC

CONN

H

U

P

F

RONT

CONTROLS

40

S

TACKLESS

OUTDOOR TOP

13-1/4

8-1/2

11

6-3/4

26-1/2

2-1/2

OPTIONAL
COMBUSTIBLE
FLOOR SHIELD

29-1/2

14-3/4

K

H

44-1/8

G
GAS

17

3-3/4

11-1/86

28-1/4

B

C

2-3/4

A

A
2

L

OUTDOOR
STACKLESS
TOP

I

NDOOR

DRAFT

DIVERTER

ELEC
C

ONN

14-1/2

10

2-1/4

5

COMBUSTIBLE
FLOOR SHIELD

(OPTIONAL)

1-5/8

H

27-3/4

6

11-1/8

5-1/8

G
GAS

1

4

46-3/4

19-1/2

PUMP
COVER
(OPTIONAL)

PUMP
(OPTIONAL)

14-1/2

11-3/4

ELEC
CONN

5

C

OMBUSTIBLE

F

LOOR

S

HIELD

(OPTIONAL)

I

NDOOR

D

RAFT

H

OOD

A

A
2

L

32-1/2

K

11-1/4

B

J

C

H

G
GAS

24-1/2

8

22

9-1/8

16

40-1/4

20-1/8

8-1/2

B

36-1/2

H-OUTLET

20-1/8

OPTIONAL ONE PASS

14-1/2

6-3/4

DIMENSION VARIES BY MODEL AND
TYPE CONSULT FACTORY FOR DETAILS.

A

K

A
2

BUILT-IN
DRAFT
DIVERTER

ELEC
CONN

8

23-5/8

Dimensional Drawings

Page 3