Instructions - Daikin Rebel Applied DPSA Installation And Start-Up Manual

Burner and Gas Manifold Pressure Adjustment Instructions
2-Stage Furnaces
1. Read gas pressure P1 at the Inlet Pressure Tap of
the two stage valve (Figure
matches the value specified in
capacity and modulation configuration. Adjust upstream
pressure reducing gas regulator as required to obtain
inlet pressure specified in
2. In main cabinet control panel, set Microtech 4 controller
to manual mode. Specify high fire operation by
setting "Htg Stage 2" menu item to ON. Back at the
furnace, read gas pressure P2 on the burner manifold
pressure tap. Confirm P2 pressure matches the HIGH
value specified in table S for your unit's capacity and
modulation configuration. If adjustment is required, adjust
the HI regulator on the two stage gas valve
3. In main cabinet control panel, set MicroTech 4 controller
to manual mode. If "Htg Stage 2" menu item is set to
ON, turn it OFF. Specify low fire operation by setting "Htg
Stage 1" menu item to ON. Back at the furnace, read
gas pressure P2 on the burner manifold pressure tap.
Confirm P2 pressure matches the LOW value specified
in table S for your unit's capacity and modulation
configuration. If adjustment is required, adjust the Lo/
Med regulator on the two stage gas valve
4-Stage Furnaces
1. Read gas pressure P1 at the Inlet Pressure Tap of
the two stage valve (Figure
matches the value specified in
capacity and modulation configuration. Adjust upstream
pressure reducing gas regulator as required to obtain
inlet pressure specified in
2. In main cabinet control panel, set MicroTech 4 controller
to manual mode. Specify high fire operation by setting all
"Htg Stage" menu items to ON. Back at the furnace, read
gas pressure P2 and P3 on the burner manifold pressure
tap. Confirm both P2 and P3 pressures match the HIGH
value specified in Table 23
modulation configuration. If adjustment is required, adjust
the HI regulator on the relevant two stage gas valve
(Figure 71)
3. In main cabinet control panel, set MicroTech 4 controller
to manual mode. If any "Htg Stage" menu items are ON,
turn them OFF. Specify low fire operation by turning
"Htg Stage 1" and "Htg Stage 2" menu items ON. Back
at the furnace, read gas pressure P2 and P3 on the
burner manifold pressure taps. Confirm both P2 and P3
pressures match the LOW value specified in
for your unit's capacity and modulation configuration. If
adjustment is required, adjust the Lo/Med regulator on
the relevant two stage gas valve
www.DaikinApplied.com
70) and confirm pressure
Table 23 for your unit's
Table 23.
(Figure 71)
(Figure 71).
70) and confirm pressure
Table 23 for your unit's
Table 23.
for your unit's capacity and
Table 23
(Figure 71).
Modulating Furnaces
1. Read gas pressure P1 at the Inlet Pressure Tap of
the two stage valve
matches the value specified in
capacity and modulation configuration. Adjust upstream
pressure reducing gas regulator as required to obtain
inlet pressure specified in
2. In main cabinet control panel, set MicroTech 4 controller
to manual mode. Specify high fire operation by "Htg
Valve" menu item to 100%. Continue to specify high
fire operation by setting all available "Htg Stage" menu
items to ON. Back at the furnace, read the gas pressures
specified in Table 23
manifold pressure taps. Confirm each pressure matches
the HIGH value specified for each manifold in
for your unit's capacity and modulation configuration.
If adjustment is required, adjust the HI regulator on the
relevant staged gas valve
3. In main cabinet control panel, set MicroTech 4 controller
to manual mode. Specify low fire operation by setting all
available "Htg Stage" menu items to OFF. Continue to set
low fire operation by setting the "Htg Valve" menu item to
the applicable value shown in
Back at the furnace, read gas pressure P2 on the burner
manifold pressure tap. Confirm P2 pressure matches the
LOW value specified in
modulation configuration. If adjustment is required, adjust the
Lo/Med regulator on the two stage gas valve
fine adjustments are required, refer to the
Controller" on page 96
Table 26: Modulating Furnace Low Fire "Htg Valve" Value
Furnace 200
400 MBH
Capacity MBH
Modulation 5:1 5:1
Low Fire
"Htg Valve" 20% 20%
Setting
95
Unit Maintenance
(Figure 70) and confirm pressure
Table 23 for your unit's
Table 23.
for your configuration on the burner
(Figure 71).
Table 24.
Table 23 for your unit's capacity and
(Figure
"Maxitrol EXA Star
documentation.
600 MBH 800 MBH
10:1 5:1 10:1 5:1 10:1
40% 20% 20%
IM 1287 • REBEL APPLIED ROOFTOP
Table 23
71). If
1200 MBH
5:1 10:1
40% 20%