Navien NHB-055 Service Manual page 42

Item
(G) Outdoor reset curve
(H) Boost interval time
(Set by installer)
(I) Space heating water
pressure
(J) Heat Capacity
(K) Flame State
(L) Target RPM
(M) Current RPM
(N) Target APS
42 NHB Service Manual
Description
Display of heat load (1~7)
1: Finned Tube Baseboard
2: FAN Coil
3: Cast Iron Baseboard
4: Low Mass Radiant
5: High Mass Radiant
6: Radiator
7: Custom (set by installer)
Display of boost interval set
(0~120 min)
Display of current water pressure
Display of current heat capacity %
range: 0~100%
Display of flame detection current
AD value
Flame ON : Below 70
Flame OFF : Over 175
Display of target fan motor RPM
Display of current fan motor RPM
Display of target APS voltage
value
If Finned Tube Baseboard is set;
If Outdoor Reset is not used;
If Boost interval time is set at 30 minutes;
Using sensor in psi
ex) 12.3 psi
psi
% Heat capacity display in percentage
ex) 100%,
Displays the flame by flame detection AD value (0~255),
ex) 200
Displays RPM deleting the 1st digit,
ex) 3600rpm,
Display of RPM by omitting the last digit,
ex) 3600 rpm,
Display of the APS value as voltage up to the first decimal place,
ex) 3.2V;
Display
Version 1.0