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4. Installation
Dimensions with bottom connection kit accessory
4.3.4.b
A
N
U
Front view
A
Height
B
Width
C
Depth
D Right side/vent
E
Back/vent
K
Back/center of pipe
N Pipe length of G and H
O Pipe length of F and J
P
Supply pipe length
Q Right side/gas pipe
R
Right side/supply pipe
S
P-trap
T
Right side/return pipe
U P-trap length
V
Distance between boilers
22
B
T
MCA Pro
inch/mm
29½/750
19¾/500
19¾/500
7½/191
4/100
2/50
5⅜/135
2⅜/60
11⅛/282
2/50
5⅛/130
7½/191
14⅜/365
13¼/335
12/300
V
Side view
O
P
Top view
Q
R
S
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)
MCA-Pro ISM Rv.4.1 2/2017
E
K
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