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4. Installation
Dimensions without bottom connection kit accessory
4.3.4.a
A
L
Front view
A
Height
B
Width
C
Depth
D
Right side/vent
E
Back/vent
F
Right side/gas pipe
G
Right side/supply pipe
H
Right side/return pipe
J
P-trap
K
Back/center of pipe
L
Pipe length of G and H
M
Pipe length of F and J
N Distance between boilers
MCA-Pro ISM Rv.4.1 2/2017
B
H
MCA Pro
inch/mm
29½/750
19¾/500
19¾/500
7½/191
4/100
2/50
5⅛/130
14⅜/365
7½/191
2/50
1
/
7
16
1½/40
12/300
N
Side view
M
Top view
F
G
J
/36
MCA Pro 45/65/90/115
C
D
Connection of the vent pipe;
3"/80mm(MCA Pro 35/45),
4"/100mm(MCA Pro 65/90/115)
Connection of the combustion air pipe;
3"/80mm (MCA Pro 35/45), 4"/100mm
(MCA Pro 65/90/115)
P-trap
Heating circuit return pipe; 1¼" Male
thread (NPT)
Gas connection; ¾" Male thread (NPT)
Heating circuit supply pipe; 1¼" Male
thread (NPT)
E
K
21
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