C NC NO M 1 2 3 4 5 6 7 IN IN OUT IN IN OUT IN IN OUT 1 2 3 4 5 6 7 P M B 0# 5# 10# 8.73 DRAWING THREE AS FOUND RETURN AIR RETURN FAN SUPPLY FAN NC NO NC 3# - 13# D2 3# - 13# D1 TT3 TT2 TT4 HL1 TT1 V2 V1 PUMP NO NO C NC NC C CWR CWS HWR HWS ----------- 5# - 12# PP 13# - 16# M NOTE: TT1 SHOULD BE MOVED UP STREAM OF RETURN FAN PREVENTING FAN HEAT GAIN. HL1 SHOULD BE MOVED TO DISCHARGE OF RETURN FAN AVOIDING DEAD AIR LOCATION. MAX. MECH. COOLING COOLING VALVE 13# - 16# RANGE NO MECH. COOLING MAX. FREE COOLING DAMPERS "FREE" COOLING 3# - 13# RANGE MIN. FREE COOLING HEATING CLOSED HEATING VALVE 5# - 12# RANGE HEATING VALVE 100% OPEN HEATING/ COOLING OVERLAP 20# 16# 12# 3# 0# EFFECTIVE THERMAL SIGNAL NOTE; BR1'S BIAS CAUSED A THEORETICAL NEGATIVE VALUE. RETURN MIXED AIR OSA TEMP. TEMP. TEMP. SUPPLY TEMP. EP1 LS1 LS2 PRV1 0# BR1 1:1 RATIO SET 6# IN = 10# OUT HS1 B M 1 2 3 B M 1 2 3 B M 1 2 3 RETURN RC1 MIXED AIR RC2 OSA HL RC3 DA 70˚F DA 58˚F RA 70˚F LOCATED ON COLUMN IN LAB. BLIND DIAL (NO MARKINGS) ---- SP ADJ. 1 RESTRICTOR RESTRICTOR RESTRICTOR RESTRICTOR
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