Warranty
Table Of Contents
- Part 1 - General Safety Information
- Part 2 - Before You Start
- Part 3 - Prepare the Appliance Installation
- A. Locating the Appliance
- B. Leveling
- C. Clearances for Service Access
- D. Residential Garage and Closet Installations
- E. Exhaust Vent and Intake Pipe
- F. Carbon Monoxide Detectors
- G. Prevent Combustion Air Contamination
- H. Removing a Appliance from a Common Vent System
- I. Technical Specifications
- J. Wall-Mounting (Wall Mount Models Only)
- K. Flow Restrictor
- Part 4 - Water Piping
- Part 5 - Venting
- A. General
- B. Approved Materials for Exhaust Vent and Intake Pipe
- C. Additional Requirements for Installation in Canada
- D. Exhaust Vent and Intake Pipe Location
- E. Exhaust Vent and Intake Pipe Sizing
- F. Tightening Appliance Collar to Exhaust Vent and Intake Pipe
- G. Exhaust Vent and Intake Pipe Installation
- H. Applications
- Part 6 - Installing the Condensate Drain
- Part 7 - Connecting Electrical Service
- Part 8 - Gas Connections
- Part 9 - Controls
- Part 10 - Troubleshooting
- Part 11 - Start-Up
- Part 12 - Installation Checklist
- Part 13 - Maintenance
- Part 14 - Moving Adapters from Left to Right (Floor Models)
- Part 15 - Replacement Parts

48
whl-648 Rev. 000 Rel. 009 Date 1.4.19
H. Status Display
Status Display will activate when button is pressed and held for ve seconds at Standby Mode when the display panel is powered ON.
Figure 46 - Status Display Screens
Display
(Main Menu)
Display
(Sub Menu)
Detail Description
O:ot
Outdoor Temperature
Current Outdoor Sensor Temperature
(When --- is displayed, outdoor sensor is not connected.)
A:Li or A:GA
DHW Water Flow Rate
Current DHW Flow
(Li: LPM; GA: GPM)
b:It
CH return water temperature Current CH return water temperature
c:Fr
Fan speed (RPM) Current fan speed (RPM)
d:Lc
Lock Function Turns Lock Function On and O
E:oP
CH supply water temperature
(Operating Temperature)
Current CH supply water temperature
F:dH
DHW outlet temperature Current DHW outlet temperature
H:Eh
Exhaust temperature Current exhaust temperature
I:St
N/A Not Used (Default is 0)
J:oH
CH water overheat temperature Current temperature on the overheat sensor
L:rt
1:PH
Burner
Operation Time
Power supply
L:rt on display on
sub menu
Time boiler has been powered in 1000 hour
units
2:rh
Burner operating time Time burner has operated in 1 hour units
3:rH
Burner operating time Time burner has operated in 1000 hour units
4:It
Ignition attempts
Number of ignition attempts: 10 times the
displayed unit
5:IH
Ignition attempts
Number of ignition attempts: 10,000 times the
displayed unit
P:Ou
Displays output condition for internal primary
pump and three way valve
- O
- On
1st Icon 2nd Icon 3rd Icon
External Pump Internal Primary Pump 3 Way Valve
Table 27 - Status Display Screen Descriptions
Turn the dial counterclockwise and clockwise to scroll through the displayed parameters. To view parameter details, press the
button at the appropriate screen. Press the or buttons to leave the parameter.
Press the button again to return to Operation Mode.