LAARS Mini-Combo id MCH - Install and Operating Manual - Manual (Page 4)

Page 4
LAARS Heating Systems
Boiler
Space Heating -
Refer to Document 1080
Tank
Figure 3. Piping Schematic.
Cold
Water
Supply
Hot
Water
Supply
Figure 4. Typical Expansion Tank Installation.
Figure 2. Dimensional Information.
Dimensions inches mm
Size A
50 14 356
75 15 381
100 16 406
125 17 432
Boiler In/Out NPT
(all sizes) 1¼
Gas NPT (all sizes) ½*
Domestic Hot Water (all sizes)
Inlet/Outlet NPT
¾
Minimum clearances from
combustible surfaces:
Left Side: 2" 51mm
Right Side: 2" 51mm
Rear: 2" 51mm
Front: 4" 102mm Top: 23" 584mm
Service clearances:
Allow 4" 102mm on each side
for piping access.
*¾" for model 125 Natural.
60
(1521)
28
(711)
41.5
(1054)
32.5
(826)
7
(178)
24
(610)
24
(610)
.75
(19)
62.5
(1588)
Domestic
Hot Water
Outlet
Cold Water
Inlet
Side View Front View
Check Valve
Tank
Pump
Boiler Flue Collar 4 (102)
Dimensions shown
in inches (mm).
7
(178)
24
(610)
Tank
Aquastat
Drain
Valve
Tank
Relief
Valve