Patterson-Kelley MACH Series Installation & Owner's Manual page 56

MACH® Series Gas-Fired Boiler
No. Description
DHW 3 Way Vlv or Pmp (1st digit)
36 Manual fanspeed
37 PWM-level CH-pump:
38 Hold boiler water DHW only
39 Max Setpoint, 2nd CH-circuit
40 Min Setpoint, 2nd CH-circuit
41 Hysteresis 2nd CH-circuit
42 Low/off Cycle
Special pump CH / DHW
Lower Limit Upper Limit
exchanger
X9 = External heat request (by RMCI )
0X = 3 way valve normally open
1X = Hot water pump
2X = 3 way valve normally closed
-1 = off
32 = off
34 F 176 F
50 F 176 F
50 F 140 F
34 F 86 F
X0 = Off
X1 = On
0X = CH: normal pump function
DHW: normal pump
function
1X = CH: pump off
DHW:normal pump function
2X = CH: normal pump function
DHW: 5 second pump delay
3X = CH: pump off
DHW: 5 second pump delay
Page 52
Appendix
MACH MACH Installed
300 PK 450 PK MCBA
Factory Factory Parameter
Setting Setting Settings
for for
MCBA MCBA
14C1028 14C1036
NG LPG NG LPG
X X X X
-1 -1 -1 -1
41 41 41 41
32 32 32 32
100 100 100 100
50 50 50 50
14 14 14 14
00 00 00 00
X X X X
X X X X