HAYWARD POOL PRODUCTS, INC.
Indoor Vent Installation Instructions
Negative Pressure (Vertical) Venting Kits
for Universal H-Series (Forced-Draft) Heaters
IMPORTANT NOTES:
1. This kit is intended to be used only with Hayward Universal H-Series (forced-draft) gas heater models built after Apr 30,
2008, serial # 21130804103872001. These heaters may be identified by inspection of the heater rating plate. The model
number should match one of those listed in Table 1, and on models H250FD, H350FD, and H400FD, the serial number
should indicate a manufacture date of Apr 2008 or later. If the manufacture date is Apr 2008, the serial number must be
greater than 03872. Table 2 may be used to extract the date of heater manufacture based on heater serial number. If it is
necessary to install this kit in a heater built before the above listed manufacture date, a separate kit is needed to update
your heater. Install kit FDXLRGK1250, FDXLRGK1350, or FDXLRGK1400 (depending on your heater model) before
installing the indoor vent kit. All models H150FD, H200FD, and H300FD are compatible with this kit.
2. This instruction sheet is intended for only the heater service parts kits listed in Table 1.
3. This kit enables indoor installations where the exhaust vent pipe termination is required to be vertically terminated a
minimum of 3 ft above the roof and a minimum of 2 ft above any portion of a building within 10 ft horizontally. This kit does
not allow horizontal vent termination. Please refer to the instructions for kit part numbers UHXPOSHZ1150,
UHXPOSHZ1200, UHXPOSHZ1250, UHXPOSHZ1300, UHXPOSHZ1350, and UHXPOSHZ1400 for other indoor venting
applications.
1301666601 rev B
Page 1 of 10
TABLE 1
TABLE 2
Serial Number Format
Year (y)
21130ymm1xxxxx001
7=2007
8=2008
9=2009
0=2010
01=Jan
02=Feb
03=Mar
04=Apr
05=May
06=Jun
07=Jul
08=Aug
09=Sep
10=Oct
11=Nov
12=Dec
Month (mm)
Note: "xxxxx" indicates the serial number.
WARNING
Failure to comply with the installation instructions in this instruction sheet may result in
equipment damage, fire, asphyxiation, or carbon monoxide poisoning. Exposure to
products of incomplete combustion (carbon monoxide) can cause cancer, birth defects, or other reproductive harm.
4. Installation of this kit should be conducted only by a qualified technician, specifically trained and experienced in the
installation of this type of heating equipment. Some states or provinces require that installers be licensed. If this is the
case in the state or province where the heater is located, the contractor must be properly licensed.
5. This kit should be installed in accordance with all local and state codes. The installation of this kit must conform to
the latest edition of the National Fuel Gas Code (ANSI Z223.1/NFPA 54), and with the requirements of the local
authority having jurisdiction. Design certification of this kit is in compliance with ANSI Z21.56/CSA 4.7. For Canadian
installations, this kit is to be installed in accordance with the standard CAN/CGA B149.1 - Installation Codes for Gas
Burning Appliances and Equipment and/or local codes.
EN
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LIS
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Part Number
Description
For Use With
Heater Models
Vent Pipe Limitations
Vent Pipe Material
Vent Termination
Requirement
UHXNEGVT1150
H150FD
UHXNEGVT1200
H200FD
UHXNEGVT1250
H250FD
UHXNEGVT1300
H300FD
UHXNEGVT1350
H350FD
UHXNEGVT1400
H400FD
Indoor Vent Adapter
Kit, Negative Pressure,
Vertical Venting
Applications
50 ft max vertical height,
25 ft max horizontal length
(horizontal length cannot exceed
1/2 of vertical height),
3 elbows max
Single or Double Wall
Galvanized Non-
Sealed Vent Pipe
Vertical Only,
Termination Above Roof
of House/Building
