Filter
Top Products
9
Vertical Venting—Negative
Pressure:
L
ocate the pool/spa heater as close
a
s 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
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
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.
8
Vent Collar Diameters
Model Diameter
H250IDL
H350IDL
H400IDL
6 inches
8 inches
8 inches
Vent Diameter
6 in.
7 in.
8 in.
9
in.
1
0 in.
H
250IDL
H
350IDL
H
400IDL
Vent Sizing Table for Vertical Negative Pressure Vending
Minimum Height (H) Maximum Hieight (H) Minimum Height (H) Maximum Hieight (H) Minimum Height (H) Maximum Hieight (H)
T
able 1: Type B Vertical Vent with Type B Vent Connector
L
ateral Length (L) must be less than Ω of the Vertical Vent Height (H)
V
ent System can have up to three 90 degree elbows.
F
8
'
6'
6'
6' 6'
6'
6'
6'
6'
6'
6'
6'50'50'
5
0'
50'
50'
50'
50'
50'50'
50'
Not RecommendedNot Recommended
N
ot Recommended Not Recommended
Not Recommended
N
ot Recommended
Not Recommended
50'
Vent Diameter
6 in.
7 in.
8 in.
9 in.
10 in.
H250IDL
H350IDL
H400IDL
Minimum Height (H) Maximum Hieight (H) Minimum Height (H) Maximum Hieight (H) Minimum Height (H) Maximum Hieight (H)
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.
8'
6'
6'
6'6'
6'
50'
20'
50'
30'30'
N
ot RecommendedNot Recommended
Not Recommended Not Recommended
N
ot Recommended
Not Recommended
N
ot Recommended
50'
Not Recommended Not Recommended Not RecommendedNot RecommendedNot RecommendedNot Recommended
Not Recommended
Not RecommendedNot Recommended
Not RecommendedNot Recommended
Figure 16
Indoor Installation
Figure 12
Below Ground Installation
Figure 13
Indoor Vent Collar
Installation
Figure 14
Drain Outlet Cover
Installation
Figure 15
Table 1 is used
when sizing
Type B
double-wall
gas vent
connected
directly to the
appliance.
The vent
termination
should not
be less
than 8 FT.
from a
vertical
wall.
Table 2 is used
when sizing a
single-wall metal
vent connector
attached to a
Type B double-
wall gas vent.