59SU5A: Installation, Start-up, Operating and Service Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
10
EXAMPLES: Determining Free Area
NP = Not Permitted
L12F012
Fig. 8 – Air for Combustion, Ventilation, and Dilution for Outdoors
L12F013
Fig. 9 – Air for Combustion, Ventilation, and Dilution from Indoors
CONDENSATE TRAP
Condensate Trap
The condensate trap is a field installed trap. A bag of loose parts needed
to install the trap is provided with the furnace. How to install the trap is
shown in the Installation section of this manual. Only use the trap
provided with the furnace.
FURNACE
WATER HEATER
TOTAL INPUT
60,000
+
40,000
=
(100,000 divided by 3,000)
=
33.3 Sq. In. for each Single Duct or Opening
80,000
+
30,000
=
(110,000 divided by 2,000)
=
55.0 Sq. In. for each two Horizontal Ducts
100,000
+
30,000
=
(130,000 divided by 4,000)
=
32.5 Sq. In. for each two Vertical Ducts or Openings
Table 4 – Minimum Space Volumes for 100% Combustion, Ventilation and Dilution Air from Outdoors
AIR
CHANGES
PER HOUR
(ACH)
OTHER THAN FAN-ASSISTED TOTAL
(1,000’S BTUH GAS INPUT RATE)
FAN-ASSISTED TOTAL
(1,000’S BTUH GAS INPUT RATE)
30
40
50
26
40
60
80
100
120
140
Space Volume Ft3 (M3)
0.60
1,050 (29.7) 1,400 (39.6)
1,750
(49.5)
910 (25.8) 1,400 (39.6) 1,500 (42.5) 2,000 (56.6) 2,500 (70.8) 3,000 (84.9) 3,500 (99.1)
0.50
1,260 (35.6) 1,680 (47.5)
2,100
(59.4)
1092 (30.9) 1,680 (47.5) 1,800 (51.0) 2,400 (67.9) 3,000 (84.9)
3,600
(101.9)
4,200
(118.9)
0.40
1,575 (44.5) 2,100 (59.4)
2,625
(74.3)
1365
(38.7)
2,100 (59.4) 2,250 (63.7) 3,000 (84.9)
3,750
(106.1)
4,500
(127.3)
5,250
(148.6)
0.30
2,100 (59.4) 2,800 (79.2)
3,500
(99.1)
1820
(51.5)
2,800 (79.2) 3,000 (84.9)
4,000
(113.2)
5,000
(141.5)
6,000
(169.8)
7,000
(198.1)
0.20
3,150 (89.1)
4,200
(118.9)
5,250
(148.6)
2730
(77.3)
4,200
(118.9)
4,500
(127.3)
6,000
(169.8)
7,500
(212.2)
9,000
(254.6)
10,500
(297.1)
0.10
6,300
(178.0)
8,400
(237.8)
10,500
(297.3)
5460
(154.6)
8,400
(237.8)
9,000
(254.6)
12,000
(339.5)
15,000
(424.4)
18,000
(509.2)
21,000
(594.1)
0.00
NP
NP
NP
NP
NP
NP
NP
NP
NP
NP
*Minimum dimensions of 3‐in. (76mm)
NOTE
: Use any of the following combinations of openings:
A & B, C & D, D & E, F & G
* Minimum opening size is 100 sq in. (64516 sq. mm) with
minimum dimensions of 3‐in. (76mm)
{
Minimum of 3‐in. (76mm) when type‐B1 vent is used.