Start Up Procedure; Central Heating System Connections - Heat Only; Central Heating System Connections - Combi - UTICA BOILERS MAHF-125 Installation, Operation & Maintenance Manual

9.1 Central Heating System Connections - Heat Only

MAHF-125 HEATING ONLY
WITH OPTIONAL INDIRECT DHW
CONNECTION
A B
A A
MAHF-125 HEATING ONLY
WITHOUT OPTIONAL INDIRECT
DHW CONNECTION
A b
A A
LEGEND
A Heating supply connection
B Drain Connection for condensate
C
Gas shutoff connection
Optional Indirect DHW connection
D
(may exit right or left)
E Heating return connection

9 - START UP PROCEDURE

C E
D
A A
A
C
A
E
A
125
11/4" sweat
3/4" NPT
3/4" NPT
3/4" sweat
11/4" sweat

9.2 Central Heating System Connections - Combi

MACF-150 COMBI
A B C
A A A
LEGEND
A
Heating supply connection
B DHW outlet
C
Drain connection for condensate
D Gas shutoff connection
E Cold DHW inlet tap
F
Heating return connection
36
D
A
A
150
11/4" sweat
1/2" sweat
3/4" NPT
3/4" NPT
1/2" sweat
11/4" sweat
240012565 REV A, [05/15/2019]
F
E
A