Iii before installing – Crown Boiler TWZ175 User Manual
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taBlE 1a: GEnEral sPEcIFIcatIOns
Notes:
1. Net Ratings are based on piping and pick-up allowances of 1.15.
2. Burner Capacity Rating, GPH is based on #2 oil with a Gross
Heating Value equal to 140000 BTU/Gal.
3. Maximum Working Pressure, Water - 50 PSI.
4. Tankless Heater Ratings based on I=W=H test standard.
III Before Installing
1) Safe, reliable operation of this boiler depends upon installation by a professional heating contractor in strict accordance
with this manual and the requirements of the authority having jurisdiction.
•
In the absence of an authority having jurisdiction, installation must be in accordance with this manual and the latest
edition of Installation of Oil Burning Equipment (ANSI/NFPA31).
•
Where required by the authority having jurisdiction, this installation must conform to the latest edition of Standard for
Controls and Safety Devices for Automatically Fired Boilers (ANSI/ASME CSD-1).
2) Make sure that a properly sized chimney is available which is in good condition. Consult the authority having
jurisdiction, Part VI of this manual, and
ANSI/NFPA31 for additional information on venting requirements.
taBlE 1b: OPtIOnal tanKlEss HEatEr ratInGs
Power (“side Wall”) Venting - Important note
Two problems arise when any oil-fired appliance is power vented:
1. There is sometimes an accelerated rate of soot buildup on the oil burner cad-cell, spinner etc.
2. There is a potential for severe damage to the side of the structure in the event that the boiler operates at a high smoke
level. This can happen for many reasons, some of which are out of the control of both the installer and appliance
manufacturer.
Crown Boiler Company recommends the use of a chimney to vent the TWZ series boilers. If a power venter must be used, it
is the responsibility of the installer and power vent manufacturer to “engineer” the power vent system. crOWn BOIlEr
cOMPanY WIll assuME nO rEsPOnsIBIlItY FOr DaMaGE tO sIDInG, Etc. FrOM a POWEr
VEntED OIl-FIrED BOIlEr. tHIs aPPlIEs rEGarDlEss OF tHE causE OF tHE sOOtInG.
"A"
"B"
"C"
TWZ065
3
0.65
80000
70000
86.1
16.0
17-3/8
8 5/16
6
TWZ075
3
0.75
91000
79000
85.8
16.0
17-3/8
8 5/16
6
TWZ100
3
1.00
120000
104000
84.3
16.0
17-3/8
8 5/16
6
TWZ090
4
0.90
111000
97000
86.0
20.0
22-3/8
10 13/16
7
TWZ125
4
1.25
152000
132000
85.1
20.0
22-3/8
10 13/16
7
TWZ150
4
1.50
179000
156000
84.0
20.0
22-3/8
10 13/16
7
TWZ120
5
1.20
147000
128000
86.0
24.0
27-3/8
13 5/16
8
TWZ175
5
1.75
212000
184000
85.1
24.0
27-3/8
13 5/16
8
TWZ200
5
2.00
241000
210000
84.7
24.0
27-3/8
13 5/16
8
I=B=R Net
Rating (Btu/hr) AFUE (%)
Approx.
Water
Content (Gal)
Dimensions (inches)
Boiler Model
Number of
Sections
Burner
Input
(Gal/hr)
DOE Heating
Capacity
(Btu/hr)
TWZ065
TWZ075
TWZ100
TWZ090
TWZ125
TWZ150
TWZ120
TWZ175
TWZ200
Boiler Model
2.75
3.00
3.50
4.25
4.75
Tankless Heater Rating
(Gal/min)
3.25
3.25
3.75
4.00