Direct Air Intake Duct With 63 Mm (2.5 In) Pvc Pipe (Heater Indoor Installation); Vent Installation - Pentair MASTERTEMP MT200HD Installation And User Manual

16 | Section 2. Installation
COMBUSTION AIR SUPPLY
Air Supply Requirements Guide for MasterTemp
Minimum Net Free Open Area for Each Opening*
(Square Inches/Centimeters)
All Air From Inside Building
Model
Combustion Vent
200 sq. in. 200 sq. in.
200
1290 cm 2 1290 cm
325 sq. in. 325 sq. in.
300
2097 cm 2 2097 cm
400 sq. in. 400 sq. in.
400
2
2580 cm . 2580 cm
*
Area indicated is for one of two openings; one at floor level and one at the ceiling.
Table 4.
VENT INSTALLATION –
FLUEING MUST BE IN ACCORDANCE WITH EUROPEAN STANDARD CODES OF PRACTICE. Always vent
the heater to the outdoors (see above
heater so as to minimize the length of horizontal venting and the number of vent elbows required. Horizontal vent runs
must slope to allow exhaust condensate to drain and it is recommended to have a condensate drain as described in the
venting installation instructions.
Direct Air Intake Duct with 76 mm (3 in - UK) PVC Pipe (Indoor Installation)
For indoor heater installations where combustion air supply might be insufficient, the MasterTemp Heater is certified for a direct air
intake duct using a 76 mm (3 in - UK) PVC pipe (Pentair P/N 461031). If outside air is drawn through the PVC duct directly into the
heater, the PVC pipe can be installed in accordance with the following requirements: The air intake opening MUST be installed at least
30.5 cm (12 in.) above the roof line or normal snow levels for free air flow. The Category I or III exhaust vent termination cap must have
at least 1.8 m (6 ft.) minimum vertical clearance from air intake duct. (See Figure 21 below).
DO NOT USE PVC PIPE FOR FLUE EXHAUST VENT. FLUE EXHAUST VENT TEMPERATURES CAN BE IN EXCESS OF 204° C.
FLUE EXHAUST VENT MUST BE CATEGORY I or CATEGORY III METAL VENT.
Figure 21.
™
MASTERTEMP Pool and Spa Heater Installation and User's Guide
(CONTINUED)
All Air From Outside Building
Combustion Vent
50 sq. in. 50 sq. in.
2 323 cm 2 323 cm 2
80 sq. in. 80 sq. in.
2 516 cm 2 516 cm 2
100 sq. in. 100 sq. in.
2 2 2
645 cm 645 cm
INDOOR INSTALLATION OR OUTDOOR SHELTER
NOTE *). Vent the heater vertically using double wall vent connector pipe. Locate the
WARNING! WARNING! WARNING!
WARNING! WARNING!
914 mm
min. (36")
76 mm (3") PVC pipe
305 mm min. (12")
™
Heaters
Chemicals should not be stored near the heater
installation. Combustion air can be contaminated by
corrosive chemical fumes which can void the
warranty.
NOTE *: Vent must be at least 2.4 m (8 ft) away from
nearest vertical surface. Vents extending 1.5 m (5 ft)
or more above the roof must be braced or guyed.
Consult your local code officials for detailed information.
Combustion PVC Air Intake 76 mm (3") Pipe
(Vertical or Horizontal)
No. of 90° Elbows
0
1
2
3
4
Combustion Air Intake
76 mm (3") PVC pipe
152 mm
min. (6")
CAUTION
Maximum Length in Meters (Ft)
21 M (70 ft.)
18 M (58 ft.)
14 M (46 ft.)
10 M (34 ft.)
7 M (22 ft.)
NOTE
Each 90-degree elbow
reduces the maximum
horizontal PVC air
intake duct run by 3.6
m (12 ft.) and each 45-
degree elbow in the
PVC air intake duct
914 mm
run reduces
min. (36")
maximum run by 1.8
m (6 ft.). See the Table
above
maximum lengths
305 mm
using 90-degree
min. (12")
elbows.
P/N 475106 Rev. D 1/2016
the
for the