Reznor HRPD, Инструкция по установке, эксплуатации и обслуживанию

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33 RP-HRPD-IOM (07-22) 132210-B
5 . Check all connections for gas leaks using commercial leak-detecting fluid or rich soap and water solution . Leaks
are indicated by presence of bubbles . If leak is detected, tighten connection . If leak cannot be stopped by tightening
connection, replace part(s) .
Conversion to LP (Propane)
⚠ DANGER ⚠
Conversion to LP (propane) gas must be performed by qualified service personnel using a factory-
supplied conversion kit. Failure to use the proper conversion kit can cause fire, explosion, property
damage, carbon monoxide poisoning, personal injury, or death.
If LP (propane) conversion is required, convert the unit in accordance with form
OPT-GC
listed in
Table 1
. When
conversion is complete, verify that the input rate is correct .
Burner Air Shutter Adjustment
⚠ DANGER ⚠
Failure to adjust air shutters according to directions could cause property damage, personal injury,
and/or death.
NOTES:
• A limited amount of yellow-tipping is permissible for liquefied petroleum gases. Natural gas
should not display any yellow-tipping.
• When making the adjustment, close the air shutters no more than is necessary to eliminate the
problem condition.
•
Air shutters are required on propane gas units but are optional on natural gas units . A slotted burner air adjustment
screw on the end manifold bracket moves the air shutters and adjusts all burners simultaneously . Turn the adjustment
screw clockwise to open the air shutter or counterclockwise to close the air shutter .
•
After the furnace has been in operation for 15 minutes, close the air shutter until the flame turns yellow . Open the
shutter until yellow disappears .
Adjust Heat Stage Controllers (Model HRPD Units with Option AG41 or AG42)
Model HRPD units with option AG41 and AG42 have heat stage controllers that control operation of the two-stage
furnace based on outside air temperature setpoints . Proper setpoints are important to ensure that the modulating
furnace ( Heat Stage 1 ) is always in control and avoids cycling . The proper setpoint for each controller must be
determined from basic design information as follows:
1 . Calculate controller settings for
Heat Stage 2
and
Heat Stage 3
in a system with two furnace sections using the
following formulas in which T
SP
= setpoints of heat stage controllers (T
SP2
and T
SP3
) , T
SA
= desired supply air
temperature
, and
T
D
= design (minimum) entering air temperature
:
Setpoint for heat stage 2: T
SP2
= T
SA
− 0.46 (T
SA
− T
D
)
Setpoint for heat stage 3: T
SP3
= T
SA
− 0.73 (T
SA
− T
D
)
NOTE: EXAMPLE: With 3,600 CFM, power-vented, 100% outside air, −10°F outdoor winter design, and
75°F desired supply air, T
SP2
= 75 − [0.46 × (75 − (−10))] = 75 − (0.46 × 85) = 35.9 and T
SP3
= 75 − [0.73
× (75 − (−10))] = 75 − (0.73 × 85) = 12.9. Set Heat #2 controller to 36°F and Heat #3 controller to 13°F.
2 . Locate heat stage controllers marked
Heat #2
and
Heat #3
in inlet air section .
NOTE: The same type of controller may also be used as the optional high ambient limit control
(option BN2) and as the mixed air controller that is part of air control options AR12, AR13, AR15,
and AR16.
3 . Adjust each controller to setpoint as determined by calculation in step 1 .