Raypak Raytherm - Type WH 926-1758 User manual

Catalog No.: 2000.22N Effective: 12-1-07 Replaces: 10-15-03
Job:
Engineer:
Contractor:
Prepared By: Date:
Model:
EFFICIENT
82% thermal efficiency – highest of any atmospheric
boiler available today
THERMAL SHOCK PROOF
Twenty-year warranty against thermal shock damage
up to 150°F differential
Maximum operating temperature: 230°F
LIGHTWEIGHT
A floor load of 70 lbs./sq. ft. or less
HIGH RECOVERY
Cuts fuel costs substantially because the standby and
radiation losses normal to other boilers are eliminated
LOW WATER OPERATING TEMPERATURE
Operates with water temperature as low as 105°F
without condensing
Heat Exchanger
ASME Inspected and Stamped
160 PSIG
National Board Approved
Headers
Glass-lined Cast Iron – Standard
Bronze – Option A-1
Finned Tubing
Copper – Standard
Cupro Nickel – Option A-3
ASME Steel Tube Sheet
Silicone O-Rings
60 PSIG ASME Pressure Relief Valve
Temperature and Pressure Gauge
(Boiler)
Water Connections
Left Hand – Standard
Right Hand – Option A-6
Flow Configuration
Two-pass – Standard
Single-pass (Cast Iron Only)
Pump, Rear-mounted (Optional)
4.25” Impeller
4.7” Impeller
Controls
120V, 60Hz, 1 Ph Power Supply
120/24V Transformer
100% Pilot Shut-off/Lockout
Electronic, Intermittent Ignition (IID)
Pilot
High Limit Control, Manual Reset
Controls (cont.)
On/Off Switch
Flow Switch
Economaster II Pump Time Delay
Gas Control Train
Manual Main Gas Shut-off Cock
Main Gas Pressure Regulator
Redundant Safety Shut-off Valve
Control Valve
Firing Mode
On/off (H4)
Two-stage Firing (H3)
Four-stage Firing (H9)
Mechanical Modulation,
110-170°F (H5)
Mechanical Modulation,
150-210°F (H1)
Motorized Modulation (H2)
B-6000 (H6)
Fuel
Natural Gas
Propane Gas
Design Certified ANSI Z21.13/CSA 4.9
Construction
Front Controls
Stainless Steel Burners
Polytuf Powder Coat Finish
Stackless Top
Base (Optional)
Combustible Floor Shield – Option J-1
Temperature Controllers
Note: H1 and H5 do not require a controller
B-7 Modulating
B-5 Modulating, Outdoor Reset
B-6 Two-stage
B- Four-stage Digital
Y-241 Electronic Sequencer,
1-4 Stages
Y-281 Electronic Sequencer,
1-8 Stages
Additional Safety Controls
F-9 Low Water Cut-off Probe
I-1 High Limit Control,
Auto Reset
S-1 Low Gas Pressure Switch
S-2 High Gas Pressure Switch
Regulatory Agency Requirements
Raytherm
®
- Type H
Hydronic Heating Boilers
Commercial
Models 926-1758 (Outdoor)
Fig. #8953

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:
Maximum acceptable flow through heat exchanger tubes is 90 GPM for two-pass and 200 GPM for single-pass systems.
In closed heating systems, GPM may increase by 10% and pressure drop by 21%.
Single-pass heat exchangers should be used only when flow rates exceed maximum acceptable rates for two-pass.
Raypak, Inc. 2151 Eastman Avenue, Oxnard, CA 93030 [phone] Fax [phone] www.raypak.com