Vertical Venting—Negative Pressure - Hayward H250IDL2 Installation, Operation & Service Instructions

Vertical Venting—Negative
Pressure:
Locate the pool/spa heater as close
as practical to a chimney and gas sup-
ply according to the Figures 12 and 13.
Size vent according to the venting
tables. The maximum vent height
should not exceed 50'. The total vent
length should not exceed one half of
the total vertical vent height. The vent
system can have up to three 90 degree
Vent Collar Diameters
Model Diameter
H250IDL 6 inches
H350IDL 8 inches
H400IDL 8 inches
Below Ground Installation
Figure 13
elbows. See Figure 16 on page 9.
The cap opening of the vent must
terminate in accordance with Figure
16. The vent cap location shall have a
minimum clearance of 4 feet horizon-
tally from electric meters, gas meters
regulators and relief openings.
The weight of the vent or chimney
must not rest on the heater. Support
must be provided in accordance with
applicable codes. The vent pipe must
be supported to maintain proper clear-
ances from combustibles.
Venting extending above the roof by
more than five feet should be guided or
braced above or below the roof to protect
the vent from wind and/or snow damage.
Indoor Adapter Kit Installation:
Before connecting vent to heater, a vent collar
must be installed to the heater exhaust outlet, and a
drain plug and outlet cover must be installed. These
components are contained in the indoor Adapter Kit.
The installation of the kit is done as follows:
1. Remove the 4 screws that fasten the vent cover
to the internal vent assembly. Discard the vent
Indoor Vent Collar
Installation
Figure 14
8
Indoor Installation
Figure 12
cover. Install the vent collar and gasket over
exhaust using 4 screws previously removed.
See Figure 14.
2. Install plug into drain at rear of heater. Install
drain outlet cover over the drain outlet using 2
screws. See Figure 15.
3. Install vent pipe on the indoor vent collar. The
collar will accept 6" or 8" vent diameter, depending
upon the model of heater. See section titled
"Indoor Installation and Venting" for indoor
installation and venting guidelines.
Drain Outlet Cover
Installation
Figure 15
Vent Sizing Table for Vertical Negative Pressure Vending
Table 1: Type B Vertical Vent with Type B Vent Connector
Lateral Length (L) must be less than Ω of the Vertical Vent Height (H)
Vent System can have up to three 90 degree elbows.
H250IDL
Vent Diameter Minimum Height (H) Maximum Hieight (H) Minimum Height (H)
6 in. 8' 50'
Not Recommended
7 in. 6' 50'
6' 50'
8 in.
9 in. 6' 50'
10 in. 6' 50'
Table 2: Type B Vertical Vent with Single Wall Vent Connector
Lateral Length (L) must be less than Ω of the Vertical Vent Height (H)
Vent System can have up to three 90 degree elbows.
H250IDL
Vent Diameter Minimum Height (H) Maximum Hieight (H) Minimum Height (H)
6 in. 8' 50'
Not Recommended
7 in. 6' 20' Not Recommended
8 in. Not Recommended Not Recommended
9 in. Not Recommended Not Recommended
Not Recommended Not Recommended Not Recommended
10 in.
Table 1 is used
when sizing
Type B
double-wall
gas vent
connected
directly to the
appliance.
Table 2 is used
when sizing a
single-wall metal
vent connector
attached to a
Type B double-
wall gas vent.
F
Figure 16
H350IDL H400IDL
Maximum Hieight (H) Minimum Height (H) Maximum Hieight (H)
Not Recommended Not Recommended Not Recommended
6'
Not Recommended Not Recommended Not Recommended
6' 50' 6' 50'
6' 50' 6' 50'
6' 50' 6' 50'
H350IDL H400IDL
Maximum Hieight (H) Minimum Height (H) Maximum Hieight (H)
Not Recommended Not Recommended Not Recommended
Not Recommended Not Recommended Not Recommended
6' 50' 6' 50'
6' 30' 6' 30'
Not Recommended Not Recommended Not Recommended
The vent
termination
should not
be less
than 8 FT.
from a
vertical
wall.
9