Page 3
LGH036-360 Agency
Never test for gas leaks with an open flame. Check all
connections with a commercially available soap solution
made specifically for leak detection.
NOTE
- Furnace must be adjusted to obtain a temperature
rise (high and low fire) within the range(s) specified on the unit
nameplate. Failure to do so may cause erratic limit operation.
Canada
The unit is CSA International (CSA) certified for combina
-
tion heating/cooling for outdoor installations and non-res-
idential use only at the clearances to combustible materi-
als as listed on the unit nameplate.
Installation of CSA international certified units must con
-
form with current standard CSA B149.1, “Natural Gas and
Propane Installation Codes” and applicable local codes.
Authorities having jurisdiction should be consulted before
installation.
The unit must be wired and electrically grounded accord-
ing to local codes or, in the absence of local codes, cur-
rent CSA Standard C22.1 Canadian Electrical Code Part
1. Installation of combination heating/cooling units must
also conform with current CSA Standard B52 “Mechanical
Refrigeration Code.”
Connect Gas Piping
A manual main shut-off valve must be installed external to
the unit when local codes require the installation of such
a valve.
Install a ground joint union between the gas control mani-
fold and the main manual shut-off valve.
When making piping connections a drip leg should be in-
stalled on vertical pipe runs to serve as a trap for sediment
or condensate.
A 1/8” N.P.T. plugged tap is located on gas valve for test
gauge connection. See Figure 4 through Figure 8 for tap
location. See Figure 9 for gas supply piping entry through
the side of the unit and Figure 10 for gas piping through
the bottom of the unit. A kit is required when routing gas
supply piping through the bottom of the unit.
Compounds used on threaded joints of gas piping must be
resistant to the actions of liquified petroleum gases.
HONEYWELL VR8305Q SERIES GAS VALVE
GAS VALVE KNOB IS SHOWN IN
OFF
POSITION.
LOW FIRE
ADJUSTMENT
HIGH FIRE
ADJUSTMENT
INLET
PRESSURE
TAP
MANIFOLD
PRESSURE
TAP
FIGURE 4
MANIFOLD
PRESSURE
OUTLET
GAS VALVE SWITCH SHOWN IN ON POSITION.
INLET
PRESSURE
PORT
MANIFOLD
PRESSURE
ADJUSTMENT
SCREW
HONEYWELL VR8215S GAS VALVE
Single-Stage
FIGURE 5
WHITE RODGERS 36J54 GAS VALVE
Two-Stage
GAS VALVE SWITCH SHOWN IN OFF POSITION.
LOW FIRE
ADJUSTMENT
HIGH FIRE
ADJUSTMENT
INLET
PRESSURE
TAP
MANIFOLD
PRESSURE TAP
FIGURE 6
WHITE RODGERS 36H54 GAS VALVE
Two-Stage
LOW FIRE
ADJUSTMENT
HIGH FIRE
ADJUSTMENT
INLET
PRESSURE
TAP
MANIFOLD
PRESSURE
TAP
GAS VALVE SWITCH SHOWN IN
ON
POSITION.
FIGURE 7
